CN103042602A - Hydraulic hybrid power concrete mixing carrier control system - Google Patents
Hydraulic hybrid power concrete mixing carrier control system Download PDFInfo
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- CN103042602A CN103042602A CN2012105797590A CN201210579759A CN103042602A CN 103042602 A CN103042602 A CN 103042602A CN 2012105797590 A CN2012105797590 A CN 2012105797590A CN 201210579759 A CN201210579759 A CN 201210579759A CN 103042602 A CN103042602 A CN 103042602A
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Abstract
The invention discloses a hydraulic hybrid power concrete mixing carrier control system and belongs to the technical field of hydraulic pressure. The hydraulic hybrid concrete mixing carrier control system comprises an upper vehicle mixing system, a lower vehicle running system and a hydraulic regeneration control system, wherein the hydraulic regeneration control system comprises an upper vehicle mixing regeneration control system and a lower vehicle running regeneration control system. According to the invention, recovery and utilization of residual power of an upper vehicle engine and recovery and utilization of finished automobile braking energy of a lower vehicle are implemented, and automobile power matching is implemented; a unique serial pump structure unit is adopted to realize upper vehicle power matching and system control and meanwhile, pressure impact in the mixing operation process is balanced; and due to adoption of a bus control technology, a finished vehicle is safe and reliable and is easy to realize.
Description
Technical field
The present invention relates to a kind of concrete-agitating vehicle control, specifically a kind of hydraulic hybrid concrete mixing and transporting car control system.
Background technology
Construction machinery product is widely used in the engineering construction municipal engineering constructions such as building, mine, harbour, but the engineering machinery development is faced with large, the seriously polluted problem of energy consumption simultaneously, and therefore, carrying out Study on energy saving has important society and economic implications.
The hydraulic hybrid technology is based on the secondary Principles of Regulation, utilizes the core component hydraulic pump/motor can work in four-quadrant characteristic, realizes recovery and the utilization of engineering machinery vehicle loss of energy, thereby realizes energy saving and emission reduction effects.Hydraulic hybrid power system has the advantages that power density is large, energy density is little, and therefore, present technique is specially adapted to have the engineering goods of frequent start-stop operating mode, such as excavator, loading machine, public transit vehicle etc.
The existing concrete trucd mixer travels on between intercity, and self load-carrying is large, and simultaneously car load start and stop are frequent, and whole system exists energy consumption large, and deficiencies such as having compression shock in the operation process is wasted, stirred to unnecessary energy greatly.
Summary of the invention
Problem for above-mentioned prior art exists the invention provides a kind of hydraulic hybrid concrete mixing and transporting car control system, can recycle and to the control of car load the unnecessary power of car load.
To achieve these goals, the technical solution used in the present invention is: a kind of hydraulic hybrid concrete mixing and transporting car control system, comprise get on the bus stirring system and the driving system of getting off, the stirring system of getting on the bus comprises the enclosed main pump, servo valve, rabbling mechanism, engine, main-gear box and clutch II, engine connects by main-gear box and clutch II, the output of clutch II links to each other with the power shaft of enclosed main pump, the delivery outlet of enclosed main pump links to each other with the entrance of servo valve, the delivery outlet of enclosed main pump also is connected with the safety valve I, and servo valve links to each other with the input of rabbling mechanism; The driving system of getting off comprises engine, main-gear box and clutch II, the output of engine links to each other with the input of main-gear box, the output of gearbox links to each other with the input of main reducing gear, main reducing gear connecting intermediate axle driving wheel and rear drive sprocket, jackshaft driving wheel and rear drive sprocket interlock front vehicle wheel; Also comprise the hydraulic regenerating control system; The hydraulic regenerating control system comprises get on the bus stirring generation control system and the generation control system that travels of getting off; The stirring generation control system of getting on the bus comprises accumulator I, two direction valves, pump motor I, clutch I and the first couplers, the outlet of pump motor I is connected with the entrance of two direction valves, the outlet of two direction valves links to each other with the entrance of accumulator I, the power shaft of pump motor I links to each other with an end of clutch I, the other end of clutch I is connected with the first power shaft left end of the first coupler, the power shaft of enclosed main pump links to each other with the first power shaft one end of the first coupler, and the first power shaft other end of the first coupler links to each other with an end of clutch II; The generation control system that travels of getting off comprises the second coupler, pump motor II, direction valve, accumulator II and clutch III, the outlet of pump motor II is connected with the entrance of direction valve, the outlet of direction valve links to each other with the entrance of accumulator II, pump motor II is connected by the clutch III with the second coupler the first power shaft one end, the second coupler the second output shaft input links to each other with gearbox, and the second coupler the second output shaft output links to each other with main reducing gear; The hydraulic regenerating control system also comprises brake, brak control unit and hydraulic regenerating controller, engine links to each other with the hydraulic regenerating controller by the CAN bus, the entrance of brak control unit links to each other with the delivery outlet of brake, the delivery outlet of brak control unit links to each other with the input port of hydraulic regenerating controller, and the delivery outlet of hydraulic regenerating controller links to each other with the control end of proportioning valve I, two position switching valves, proportioning valve II, lubricated control module I, proportional pressure control valve, lubricated control module II, proportioning valve III, reversal valve.
The right-hand member of the first coupler the first power shaft links to each other with the power shaft of lubricating pump I, lubricating pump I inlet port links to each other with the drain pan of the first coupler, lubricating pump I force feed mouth links to each other with the entrance of lubricated control module I, and the delivery outlet of lubricated control module I links to each other with the lubricated entrance of the first coupler.
The lubricated entrance of the second coupler links to each other with the delivery outlet of lubricated control module II, and the entrance of lubricated control module II links to each other with the force feed mouth of lubricating pump II, and the power shaft of lubricating pump II links to each other with the auxiliary flange mouth of enclosed main pump.
Lubricating pump II and pioneer pump are duplex pump, and the lubricating pump II links to each other with the auxiliary pump flange connector of enclosed main pump with the power shaft of pioneer pump.
The pivot angle cylinder control mouth of pump motor I is connected with the outlet of proportioning valve I, and the entrance of proportioning valve I is connected with guide's delivery side of pump, and pioneer pump connects proportional pressure control valve.
The outlet of proportioning valve II links to each other with the entrance of accumulator I, and the import of proportioning valve II links to each other with the outlet of shuttle valve, and the entrance of shuttle valve is associated with the load port of the dress stirring system of getting on the bus.
Pump motor II pivot angle cylinder control mouthful is connected with the proportioning valve III, and the proportioning valve III links to each other with pioneer pump, the outlet of the pump motor II safety valve II that links to each other.
Compare with existing system, the present invention also comprises the hydraulic regenerating control system except comprising get on the bus stirring system and the driving system of getting off; Realized getting on the bus, get off recovery and the utilization of car load braking energy realize the car load power match; Adopt unique string pump configuration unit to realize upper dress power match and system's control, the simultaneously balanced compression shock that stirs in the operation process; Adopt bus control technology, car load is safe and reliable, easily realizes.
Description of drawings
Fig. 1 is hydraulic schematic diagram of the present invention.
Among the figure: 1, front vehicle wheel, 2, brake, 3, the proportioning valve I, 4, the accumulator I, 5, two position switching valves, 6, pump motor I, 7, the proportioning valve II, 8, the clutch I, 9, the first coupler, 10, lubricated control module I, 11, the lubricating pump I, 12, shuttle valve, 13, the enclosed main pump, 14, the lubricating pump II, 15, pioneer pump, 16, proportional pressure control valve, 17, the safety valve I, 18, servo valve, 19, rabbling mechanism, 20, engine, 21, main-gear box, 22, the clutch II, 23, brak control unit, 24, lubricated control module II, 25, the hydraulic regenerating controller, 26, the second coupler, 27, the proportioning valve III, 28, pump motor II, 29, reversal valve, 30, the accumulator II, 31, the safety valve II, 32, main reducing gear, 33, the jackshaft driving wheel, 34, rear drive sprocket, 35, the clutch III.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of hydraulic hybrid concrete mixing and transporting car control system, comprise get on the bus stirring system and the driving system of getting off, the stirring system of getting on the bus comprises enclosed main pump 13, servo valve 18, rabbling mechanism 19, engine 20, main-gear box 21 and clutch II 22, engine 20 connects by main-gear box 21 and clutch II 22, the output of clutch II 22 links to each other with the power shaft of enclosed main pump 13, the delivery outlet of enclosed main pump 13 links to each other with the entrance of servo valve 18, the delivery outlet of enclosed main pump 13 also is connected with safety valve I 17, security of system pressure when the upper dress of safety valve I 17 restrictions stirs operation, servo valve 18 links to each other with the input of rabbling mechanism 19; The driving system of getting off comprises engine 20, main-gear box 21 and clutch II 22, the output of engine 20 links to each other with the input of main-gear box 21, the output of gearbox 21 links to each other with the input of main reducing gear 32, main reducing gear 32 connecting intermediate axle driving wheels 33 and rear drive sprocket 34, jackshaft driving wheel 33 and rear drive sprocket 34 interlock front vehicle wheels 1 are realized travelling of car load; Also comprise the hydraulic regenerating control system; The hydraulic regenerating control system comprises get on the bus stirring generation control system and the generation control system that travels of getting off; The stirring generation control system of getting on the bus comprises accumulator I 4, two direction valves 5, pump motor I 6, clutch I 8 and the first coupler 9, the outlet of pump motor I 6 is connected with the entrance of two direction valves 5, the outlet of two direction valves 5 links to each other with the entrance of accumulator I 4, the power shaft of pump motor I 6 links to each other with an end of clutch I 8, the other end of clutch I 8 is connected with the first power shaft left end of the first coupler 9, the power shaft of enclosed main pump 13 links to each other with the first power shaft one end of the first coupler 9, and the first power shaft other end of the first coupler 9 links to each other with an end of clutch II 22; The generation control system that travels of getting off comprises the second coupler 26, pump motor II 28, direction valve 29, accumulator II 30 and clutch III 35, the outlet of pump motor II 28 is connected with the entrance of direction valve 29, the outlet of direction valve 29 links to each other with the entrance of accumulator II 30, pump motor II 28 is connected by clutch III 35 with the second coupler 26 first power shafts one end, the second coupler 26 second output shaft inputs link to each other with gearbox 21, and the second coupler 26 second output shaft outputs link to each other with main reducing gear 32; The hydraulic regenerating control system also comprises brake 2, brak control unit 23 and hydraulic regenerating controller 25, engine 20 links to each other with hydraulic regenerating controller 25 by the CAN bus, the control that hydraulic regenerating controller 25 is realized the hydraulic regenerating control system, the entrance of brak control unit 23 links to each other with the delivery outlet of brake 2, the delivery outlet of brak control unit 23 links to each other with the input port of hydraulic regenerating controller 25, the delivery outlet of hydraulic regenerating controller 25 and proportioning valve I 3, two position switching valves 5, proportioning valve II 7, lubricated control module I 10, proportional pressure control valve 16, lubricated control module II 24, proportioning valve III 27, the control end of reversal valve 29 links to each other.
Be to realize recovery and utilization to the car load excess energy, the present invention adopts the car load energy control program based on the CAN bus, comprises the dress surplus power and gets off recovery and the utilization of surplus power of travelling.
For realizing recovery and the utilization to upper dress surplus power, the present invention adopts the stirring generation control system of getting on the bus: the stirring generation control system of getting on the bus comprises accumulator I 4, two direction valves 5, pump motor I 6, clutch I 8 and the first coupler 9, the outlet of pump motor I 6 is connected with the entrance of two direction valves 5, the outlet of two direction valves 5 links to each other with the entrance of accumulator I 4, the power shaft of pump motor I 6 links to each other with an end of clutch I 8, the other end of clutch I 8 is connected with the first power shaft left end of the first coupler 9, the power shaft of enclosed main pump 13 links to each other with the first power shaft one end of the first coupler 9, and the first power shaft other end of the first coupler 9 links to each other with an end of clutch II 22.In stirring operation or car load driving process, hydraulic regenerating controller 25 comprises by CAN bus perception engine 20 work state informations: real-time rotate speed, the information such as engine torque, calculate at this moment engine real output and actual demand power, and then control pump motor I 6 is operated in pump operating mode or motor operating mode, the pivot angle of 3 pairs of pump motors of passing ratio valve I I 6 is controlled in real time simultaneously, recovery and the utilization of dress surplus power in the realization, the output torque of balanced engine 20, so that engine 20 always works in best fuel-economy point: on when filling energy and reclaiming, pump motor I 6 is operated in the pump operating mode, pump motor I 6 is stored in the surplus power of engine 20 outputs in the accumulator I 4 by two direction valves 5, finishes the recovery of dress surplus power; When the energy of getting off utilized, when hydraulic regenerating controller 25 perceived the power output deficiency of engine 20, when pump motor I 6 was operated in the motor operating mode, the energy in the accumulator I 4 discharged by two direction valves 5, and driving pump motor I 6 realizes the operation power-assisted.
Further, for realizing lubricating the first coupler 9, the right-hand member of the first coupler 9 first power shafts links to each other with the power shaft of lubricating pump I 11, lubricating pump I 11 inlet ports link to each other with the drain pan of the first coupler 9, lubricating pump I 11 force feed mouths link to each other with the entrance of lubricated control module I 11, and the delivery outlet of lubricated control module I 11 links to each other with the lubricated entrance of the first coupler 9.
Further, for realizing the pivot angle control to pump motor I 6, the outlet with proportioning valve I 3 of pump motor I 6 pivot angle cylinders control mouth is connected, the entrance of proportioning valve I 3 is connected with the outlet of pioneer pump 15, pioneer pump 15 connects proportional pressure control valve 16, and proportional pressure control valve 16 is realized the proportion control of pioneer pump 15 pilot pressures.
The adaptive equalization of compression shock when stirring operation for realizing getting on the bus, the outlet of proportioning valve II 7 links to each other with the entrance of accumulator I 4, the import of proportioning valve II 7 links to each other with the outlet of shuttle valve 12, the entrance of shuttle valve 12 is associated with the load port of the stirring system of getting on the bus, the shuttle valve 12 compression shock induction that realizes getting on the bus, hydraulic regenerating controller 25 is according to the pressure feedback of shuttle valve 12, and the opening of resize ratio valve II 7 realizes that the self adaptation of percussion pressure absorbs in real time.
For realizing recovery and the utilization to the braking energy of getting off, the present invention adopts the generation control system that travels of getting off: the generation control system that travels of getting off comprises the second coupler 26, pump motor II 28, direction valve 29, accumulator II 30 and clutch III 35, the outlet of pump motor II 28 is connected with the entrance of direction valve 29, the outlet of direction valve 29 links to each other with the entrance of accumulator II 30, pump motor II 28 is connected by clutch III 35 with the second coupler 26 first power shafts one end, the second coupler 26 second output shaft inputs link to each other with gearbox 21, and the second coupler 26 second output shaft outputs link to each other with main reducing gear 32; The hydraulic regenerating control system also comprises brake 2, brak control unit 23 and hydraulic regenerating controller 25, engine 20 links to each other with hydraulic regenerating controller 25 by the CAN bus, the entrance of brak control unit 23 links to each other with the delivery outlet of brake 2, the delivery outlet of brak control unit 23 links to each other with the input port of hydraulic regenerating controller 25, and the delivery outlet of hydraulic regenerating controller 25 links to each other with the control end of proportioning valve I 3, two position switching valves 5, proportioning valve II 7, lubricated control module I 10, proportional pressure control valve 16, lubricated control module II 24, proportioning valve III 27, reversal valve 29; Hydraulic regenerating controller 25 is by CAN bus monitoring system mode, be operated in pump operating mode or motor operating mode with control pump motor II 28: when the energy of getting off reclaims, pump motor II 28 is operated in the pump operating mode, pump motor II 28 is stored in the car load braking kinetic energy in the accumulator II 30 by reversal valve 29, at this moment, pump motor II 28 independent brake or engine 20 pump motor II 28 Associated brakes are finished mechanical energy to the hydraulic pressure transformation of energy; When the energy of getting off utilizes, when pump motor II 28 is operated in the motor operating mode, energy in the accumulator 30 discharges by reversal valve 29, driving pump motor II 28, at this moment, pump motor 28 II drive or engine 20 pump horse II reach 28 and unite driving, realize that car load drives, and finishes pressure energy to mechanical transformation of energy.
Further, for realizing lubricating pump motor II 28, the second coupler 26 lubricated entrances link to each other with the delivery outlet of lubricated control module II 24, and the entrance of lubricated control module II 24 links to each other with the force feed mouth of lubricating pump II 14, and the power shaft of lubricating pump II 14 links to each other with the auxiliary flange mouth of enclosed main pump 13.
Further, for realizing the pivot angle control to pump motor II 28, pump motor II 28 pivot angle cylinders control mouth is connected with proportioning valve III 27, and proportioning valve III 27 links to each other with pioneer pump 15, the outlet of the pump motor II 28 safety valve II 31 that links to each other, safety valve II 31 is restriction regenerative system maximum pressures effectively.
As improvement of the present invention, lubricating pump II 14 is duplex pump with pioneer pump 15 among the present invention, lubricating pump II 14 and pioneer pump 15 as with power shaft link to each other with the auxiliary pump flange connector of enclosed main pump 13, lubricating pump II 14 provides the second coupler 26 required lubricating oil, pioneer pump 15 provides pump motor I 6, pump motor II 28 required control fluid simultaneously, to realize the pivot angle control to pump motor I 6, pump motor 28 II.
Claims (7)
1. hydraulic hybrid concrete mixing and transporting car control system, comprise get on the bus stirring system and the driving system of getting off, the stirring system of getting on the bus comprises enclosed main pump (13), servo valve (18), rabbling mechanism (19), engine (20), main-gear box (21) and clutch II (22), engine (20) connects by main-gear box (21) and clutch II (22), the output of clutch II (22) links to each other with the power shaft of enclosed main pump (13), the delivery outlet of enclosed main pump (13) links to each other with the entrance of servo valve (18), the delivery outlet of enclosed main pump (13) also is connected with safety valve I (17), and servo valve (18) links to each other with the input of rabbling mechanism (19); The driving system of getting off comprises engine (20), main-gear box (21) and clutch II (22), the output of engine (20) links to each other with the input of main-gear box (21), the output of gearbox (21) links to each other with the input of main reducing gear (32), main reducing gear (32) connecting intermediate axle driving wheel (33) and rear drive sprocket (34), jackshaft driving wheel (33) and rear drive sprocket (34) interlock front vehicle wheel (1); It is characterized in that, also comprise the hydraulic regenerating control system; The hydraulic regenerating control system comprises get on the bus stirring generation control system and the generation control system that travels of getting off; The stirring generation control system of getting on the bus comprises accumulator I (4), two direction valves (5), pump motor I (6), clutch I (8) and the first coupler (9), the outlet of pump motor I (6) is connected with the entrance of two direction valves (5), the outlet of two direction valves (5) links to each other with the entrance of accumulator I (4), the power shaft of pump motor I (6) links to each other with an end of clutch I (8), the other end of clutch I (8) is connected with the first power shaft left end of the first coupler (9), the power shaft of enclosed main pump (13) links to each other with the first power shaft one end of the first coupler (9), and the first power shaft other end of the first coupler (9) links to each other with an end of clutch II (22); The generation control system that travels of getting off comprises the second coupler (26), pump motor II (28), direction valve (29), accumulator II (30) and clutch III (35), the outlet of pump motor II (28) is connected with the entrance of direction valve (29), the outlet of direction valve (29) links to each other with the entrance of accumulator II (30), pump motor II (28) is connected by clutch III (35) with the second coupler (26) first power shafts one end, the second coupler (26) second output shaft inputs link to each other with gearbox (21), and the second coupler (26) second output shaft outputs link to each other with main reducing gear (32); The hydraulic regenerating control system also comprises brake (2), brak control unit (23) and hydraulic regenerating controller (25), engine (20) links to each other with hydraulic regenerating controller (25) by the CAN bus, the entrance of brak control unit (23) links to each other with the delivery outlet of brake (2), the delivery outlet of brak control unit (23) links to each other with the input port of hydraulic regenerating controller (25), the delivery outlet of hydraulic regenerating controller (25) and proportioning valve I (3), two position switching valves (5), proportioning valve II (7), lubricated control module I (10), proportional pressure control valve (16), lubricated control module II (24), proportioning valve III (27), the control end of reversal valve (29) links to each other.
2. a kind of hydraulic hybrid concrete mixing and transporting car control system according to claim 1, it is characterized in that, the right-hand member of described the first coupler (9) first power shafts links to each other with the power shaft of lubricating pump I (11), lubricating pump I (11) inlet port links to each other with the oil sump of the first coupler (9), lubricating pump I (11) force feed mouth links to each other with the entrance of lubricated control module I (11), and the delivery outlet of lubricated control module I (11) links to each other with the lubricated entrance of the first coupler (9).
3. a kind of hydraulic hybrid concrete mixing and transporting car control system according to claim 1, it is characterized in that, the lubricated entrance of described the second coupler (26) links to each other with the delivery outlet of lubricated control module II (24), the entrance of lubricated control module II (24) links to each other with the force feed mouth of lubricating pump II (14), and the power shaft of lubricating pump II (14) links to each other with the auxiliary flange connector of enclosed main pump (13).
4. a kind of hydraulic hybrid concrete mixing and transporting car control system according to claim 3, it is characterized in that, lubricating pump II (14) is duplex pump with pioneer pump (15), and lubricating pump II (14) links to each other with the auxiliary pump flange connector of enclosed main pump (13) with the power shaft of pioneer pump (15).
5. a kind of hydraulic hybrid concrete mixing and transporting car control system according to claim 1, it is characterized in that, the pivot angle cylinder control mouth of described pump motor I (6) is connected with the outlet of proportioning valve I (3), the entrance of proportioning valve I (3) is connected with the outlet of pioneer pump (15), and pioneer pump (15) connects proportional pressure control valve (16).
6. a kind of hydraulic hybrid concrete mixing and transporting car control system according to claim 1, it is characterized in that, the outlet of described proportioning valve II (7) links to each other with the entrance of accumulator I (4), the import of proportioning valve II (7) links to each other with the outlet of shuttle valve (12), and the entrance of shuttle valve (12) is associated with the load port of the stirring system of getting on the bus.
7. a kind of hydraulic hybrid concrete mixing and transporting car control system according to claim 1, it is characterized in that, described pump motor II (28) pivot angle cylinder control mouth is connected with proportioning valve III (27), proportioning valve III (27) links to each other with pioneer pump (15), the outlet of pump motor II (28) the safety valve II (31) that links to each other.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210579759.0A CN103042602B (en) | 2012-12-27 | 2012-12-27 | Hydraulic hybrid power concrete mixing carrier control system |
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| CN201210579759.0A CN103042602B (en) | 2012-12-27 | 2012-12-27 | Hydraulic hybrid power concrete mixing carrier control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103754104A (en) * | 2014-01-27 | 2014-04-30 | 徐工集团工程机械股份有限公司 | Hydraulic hybrid power vehicle |
| CN106460889A (en) * | 2014-06-09 | 2017-02-22 | 日立建机株式会社 | Operation machine |
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| CN101081596A (en) * | 2007-06-22 | 2007-12-05 | 哈尔滨工业大学 | Transmission system of double-bridge liquid-driving mixed power automobile |
| CN101337499A (en) * | 2008-08-08 | 2009-01-07 | 哈尔滨工业大学 | Vehicle braking kinetic-energy regeneration device |
| CN203228318U (en) * | 2012-12-27 | 2013-10-09 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Hydraulic-hybrid control system for concrete stirring carrier |
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| US5795060A (en) * | 1996-05-17 | 1998-08-18 | Stephens; Patrick J. | Method and apparatus for continuous production of colloidally-mixed cement slurries and foamed cement grouts |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103754104A (en) * | 2014-01-27 | 2014-04-30 | 徐工集团工程机械股份有限公司 | Hydraulic hybrid power vehicle |
| CN106460889A (en) * | 2014-06-09 | 2017-02-22 | 日立建机株式会社 | Operation machine |
| CN106460889B (en) * | 2014-06-09 | 2018-06-22 | 株式会社Kcm | Work machine |
| US10017918B2 (en) | 2014-06-09 | 2018-07-10 | Kcm Corporation | Working machine |
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Effective date of registration: 20230106 Address after: 221000 No.26 tuolanshan Road, Xuzhou Economic and Technological Development Zone, Xuzhou City, Jiangsu Province Patentee after: JIANGSU XUGONG ENGINEERING MACHINERY RESEARCH INSTITUTE Co.,Ltd. Address before: No. 3 Tuolanshan Road, Xuzhou Economic Development Zone, Xuzhou City, Jiangsu Province, 221000 Patentee before: Xuzhou Construction Machinery Institute, Xuzhou Construction Machinery Group Co.,Ltd. |