WO2012100736A1 - Steel reinforcing bar straightening method and straightener having stretching capabilities and aligned pressure rolls - Google Patents

Abstract

A steel reinforcing bar (rebar) straightener having extension capabilities and aligned pressure rolls, comprising a traction mechanism in the front section of the straightener, a straightening and stretching mechanism in the rear section of the traction mechanism, and a feed mechanism in the rear section of the straightening and stretching mechanism; the traction mechanism consists of a traction roll frame (1), lower traction rolls (2), upper traction rolls (3), and traction roll adjustment components (4); the straightening and stretching mechanism consists of a straightening roll frame (7), two rows of straightening rolls (8), and straightening roll adjustment components (9); the feed mechanism consists of a feed roll frame (12), a lower row of feed rolls (13), an upper row of feed rolls (14), and feed roll adjustment components (15). When the rebar straightener operates, traction rolls connected to and driven by a prime mover grip a rebar from both sides and move the rebar continuously forward. The rebar is repeatedly bent by the straightening rolls of the straightening and stretching mechanism, and is straightened and stretched. The present invention has a dual purpose and is easy to operate. By substantially simplifying the device structure, steel needed to manufacture the device is conserved, manufacturing cost is reduced, and operation energy consumption is lowered. Also disclosed is a rebar straightening method having stretching capabilities and aligned pressure rolls.

Description

Alignment pressure roller type steel bar straightening method with extension function and straightening machine Technical field

 The invention relates to a straightening device for building steel bars, in particular to an alignment roller type steel bar straightening method with an extension function and a straightening machine.

Background technique

According to the provisions of Sections 5, 3 and 2A of the "Construction Quality Acceptance Code for Concrete Structure Engineering" revised and revised in China, the steel bars supplied in coil form are allowed to have a negative deviation of ≤ 8-10% per unit length after straightening. Namely: the negative deviation of the weight per unit length of the steel bar below the HRB300 supplied by the coil is ≤10%; the negative deviation of the weight per unit length after the HRB335 above the strength of the coil is adjusted to ≤8 %. The formulation of this regulation is based on the fact that the strength of the steel bar is slightly improved when the coiled steel bar is stretched during the straightening process, while the other physical indicators are not much changed, and are within the scope of national standards. Therefore, the coiled steel bar can be extended in the straightening process, which not only improves the building quality, but also saves a lot of steel for construction.

Because the coils are to be straightened and processed by the steel bar straightening machine, they can be used in the construction concrete. Currently, there are two types of steel bar straightening machines:

1. Rotating frame type steel bar straightening machine. During operation, the straightening block or the straightening roller is spiraled around the steel rod that is being pulled. If the straightening block or the straightening roller is pressed excessively on the reinforcing bar, the straightened reinforcing bar will be twisted in a twist shape. The straightening machine of this structure can only straighten the reinforcing bar and cannot extend it.

2. Pressure roller type steel straightening machine. The utility model comprises a pressure roller type straightening mechanism composed of two rows of straightening wheels, two rows of straightening axles and a straightening wheel frame which are mutually staggered, and the two rows of straightening wheels which are mutually staggered are mounted on the straightening wheel frame by the straightening wheel axle. The lower row of straightening wheels is connected to the power output component of the prime mover through the traction straight shaft, that is, the lower row of straightening wheels are all the driving wheels, and the upper row of straightening wheels are all passive wheels, and the processed steel bars are active. In the middle of the wheel and the passive wheel, the passive wheel bends the steel bar resting on the driving wheel through the adjusting mechanism. The driving wheel and the passive wheel are all rotated along the axial direction of the steel bar. During operation, the steel bar is continuously driven by the driving wheel, and a large number of passive wheel pressures are pressed on the continuously moving steel bar, so that it is repeatedly bent and eliminated to achieve stress adjustment. straight. The steel bar can be slightly stretched each time it is bent, and can be extended in proportion to the number of bends. However, since the lower row is all the driving wheels and the same speed, and their working diameter is the same, that is, the line speed of the working surface is the same, the driving wheel in front of the reinforcing steel direction restricts the elongation of the steel bar from the back. Make it impossible to extend.

The existing unit for extending and straightening the coiled steel bar is a unit with an independent stretching machine behind the unit and an independent straightening machine in front. The extension machine winds the steel bars around the traction wheels of a powerful tractor and around several passive extension wheels. When the tractor is started, the reinforcing steel wrapped around the traction wheel passes through the passive extension wheel, so that it is repeatedly bent to realize the extension, and then enters the straightening machine to realize straightening. The shortcomings of the unit are: 1 steel bars that have been extended and straightened, especially those with a strength of more than HRB335, the ribs are particularly strong; 2 the manufacturing cost is high; 3 the running energy is large; 4 operation and feeding are very inconvenient.

Summary of the invention

One of the objects of the present invention is to overcome the above-mentioned deficiencies of the prior art and to provide an alignment roller type reinforcing bar straightening method having an extending function.

The technical solution for realizing the above object of the present invention is: an alignment pressure roller type steel bar straightening method with an extension function, and the two rows of straightening wheels which are mutually staggered are used to straighten the steel bar by straight bending, and the two rows are adjusted. The straight wheel is located at the rear of the straightening machine, and both are passive straightening wheels. The traction rods in the front section of the straightening machine are used to pull the steel bars continuously forward, and the straightening wheels rotating in the rear section of the straightening machine are driven by the steel bars. The reinforcing bars are repeatedly bent so that the reinforcing bars are straightened and extended.

A second object of the present invention is to overcome the above-mentioned deficiencies of the prior art and to provide an alignment roller type steel bar straightening machine having an extending function.

The technical solution for achieving the above object of the present invention is: an alignment pressure roller type steel bar straightening machine with an extending function, comprising a traction mechanism at a front portion of the straightening machine and a straightening and extending mechanism at a rear end of the traction mechanism; The straightening wheel frame, the two-row straightening wheel and the straightening wheel adjusting component are composed, and the two rows of straightening wheels are mounted on the straightening wheel frame through the straightening wheel axle and the bearing, that is, all are passive, and are mutually displaced and pressed in the processed On the steel bars.

A further technical solution of the invention is: The traction mechanism includes a first traction mechanism and a second traction mechanism. The first traction mechanism is composed of a traction wheel frame, a lower traction wheel, an upper traction wheel and a traction wheel adjusting assembly. The upper traction wheel and the lower traction wheel are mounted on the traction wheel through the traction wheel axle. On the frame, the traction sheave adjustment assembly is coupled to the traction sheave shaft, and the upper traction sheave and the lower traction sheave are connected to the prime mover power output assembly through the traction sheave shaft, that is, the upper traction sheave and the lower traction sheave are both active and aligned with each other, the upper traction sheave And the lower traction wheel sandwiches the processed steel bar under the action of the traction wheel adjusting component; the second traction mechanism traction mechanism is composed of a traction wheel frame, a lower traction wheel, an upper traction wheel and a traction wheel adjusting component, and the lower traction wheel passes the traction axle Installed on the traction sheave, the upper traction sheave is mounted on the traction sheave through the traction sheave shaft and the bearing, the traction sheave adjustment assembly is connected to the traction sheave shaft, and the lower traction sheave is connected to the motive power output assembly through the traction sheave shaft, ie the lower traction sheave For active, the upper traction wheels are passive and aligned with each other, and the upper and lower traction wheels are clamped under the action of the traction wheel adjustment assembly. Processed steel.

A further technical solution of the present invention further comprises: a feeding mechanism at a rear end of the straightening and extending mechanism, the feeding mechanism is composed of a feeding wheel frame, a lower feeding roller, an upper feeding roller and a feeding wheel adjusting component, and the lower feeding roller and the upper feeding wheel The feeding wheel is mounted on the feeding wheel frame through the feeding wheel shaft, the feeding wheel adjusting assembly is connected with the feeding wheel shaft, the feeding wheel shaft is connected with the prime mover through the clutch, and is aligned with each other, and the lower feeding wheel and the upper feeding wheel are arranged at the feeding wheel adjusting assembly Under the action, the processed steel bars are clamped, and when the clutch is combined, it is active. When the clutch is disengaged, it is passive. The axes of the lower feed roller and the upper feed roller are perpendicular to the axis of the processed steel bar.

The invention adopts the above technical solution, and replaces the existing unit which is extended and straightened by a combination of an extension machine and a straightening machine, and the invention effectively solves the straightening of the steel bar compared with the prior art. The machine can only straighten the steel bars without extending the steel bars. It has the advantages of one machine and two energy, and is easy to operate. It greatly simplifies the equipment mechanism, saves steel for equipment, reduces equipment manufacturing costs, and reduces the cost. Equipment operating energy consumption.

The details of the present invention are further described below in conjunction with the drawings and specific embodiments.

DRAWINGS

1 is a schematic structural view of Embodiment 1 of the present invention;

2 is a schematic structural view of Embodiment 2 of the present invention;

3 is a schematic structural view of Embodiment 3 of the present invention;

4 is a schematic structural view of Embodiment 4 of the present invention;

Figure 5 is a schematic structural view of Embodiment 5 of the present invention;

Figure 6 is a schematic structural view of Embodiment 6 of the present invention.

detailed description

Example 1

As shown in FIG. 1 , an alignment pressure roller type steel straightening machine with an extending function comprises a first traction mechanism at a front portion of the straightening machine, a second traction mechanism at a rear end of the first traction mechanism, and a second traction mechanism. a straightening extension mechanism at the rear end and a feeding mechanism at the rear end of the straightening extension mechanism; the first traction mechanism is composed of a traction sheave 1, a lower traction sheave 2, an upper traction sheave 3 and a traction sheave adjustment assembly 4, the lower traction sheave 2 and the upper The traction sheave 3 is mounted on the traction sheave 1 via the traction sheave 5, the traction sheave adjustment assembly 4 is coupled to the traction sheave 5, and the lower traction sheave 2 and the upper traction sheave 3 are connected to the prime mover power take-off assembly via the traction sheave 5, ie The traction sheave 2 and the upper traction sheave 3 are aligned with each other and are active; the second traction mechanism traction mechanism is composed of a traction sheave 1, a lower traction sheave 2, an upper traction sheave 3 and a traction sheave adjustment assembly 4, and the lower traction sheave 2 passes The traction sheave 5 is mounted on the traction sheave 1 which is mounted on the traction sheave 1 via the traction sheave 31 and the bearing 32, the traction sheave adjustment assembly 4 is coupled to the traction sheave 31, and the lower traction sheis 2 is passed through the traction sheave 5 Original motion The power output components of the machine are connected, that is, the lower traction wheel 2 is active, the upper traction wheel 3 is passive, and is aligned with each other, and the upper traction wheel 3 and the lower traction wheel 2 sandwich the processed steel bar under the action of the traction wheel adjustment assembly 4. 6; the straightening and extending mechanism is composed of a straightening wheel frame 7, two rows of straightening wheels 8 and a straightening wheel adjusting assembly 9, two rows of straightening wheels 8 are placed in a vertical direction, and are installed in the tune by the straightening wheel axle 10 and the bearing 11 The straight wheel frame 7 is passive, and is offset from each other on the processed steel bar 6; the feeding mechanism is composed of a feeding wheel frame 12, a lower row feeding wheel 13, an upper row feeding wheel 14, and a feeding wheel adjusting assembly 15. The lower row feed wheel 13 and the upper row feed wheel 14 are mounted on the feed wheel frame 12 via the feed wheel shaft 16, the feed wheel adjustment assembly 15 is coupled to the feed wheel shaft 16, and the feed wheel shaft 16 is coupled to the prime mover via the clutch and aligned with each other, the lower row The feed wheel 13 and the upper row of feed wheels 14 sandwich the processed steel bars 6 under the action of the feed wheel adjusting assembly 15, which is active when the clutch is engaged, and passive when the clutch is disengaged; the lower row of traction wheels 2, the upper row of traction wheels 3 and two rows of straightening wheels 8 and lower row of feeding wheels 1 3. The axis of the upper row of feed wheels 14 is perpendicular to the axis of the steel being processed.

In operation, the reinforcing bar 6 is sandwiched by the lower row of feed rollers 13 and the upper row of feed rollers 14 of the feeding mechanism, and the feeding wheel axle 16 that is connected to the prime mover power drives the lower row of feed rollers 13 and the upper row of feed rollers 12 to continuously follow the reinforcing bars 6 The axial direction of rotation, the traction of the steel 6 continues to advance. When the reinforcing bar passes through the straightening and extending mechanism at the middle end of the straightening machine, and proceeds to the position of the traction mechanism at the front end of the straightening machine, the clutch is disengaged, so that the lower row of the feeding wheel 13 and the upper row of the feeding wheel 14 become passive; the lower row of the traction wheel of the traction mechanism 2 and the steel rod 6 drawn by the upper row of traction wheels 3 continuously advances, and the continuously moving steel bars 6 drive the two rows of straightening wheels 8 of the straightening and extending mechanism to repeatedly bend the steel bars 6, so that one side eliminates the original bending stress. Being straightened, on the other hand, since the two rows of straightening wheels 8 of the straightening and extending mechanism are passive, the reinforcing bars 6 are bent a plurality of times and are freely extended without being restricted for many times while advancing, and at the same time, the traction mechanism The steel bar 6 which can be freely elongated at the rear end also has a certain tensile force, and realizes the extension within the allowable range according to the national standard, thereby achieving the purpose of saving steel.

Example 2

As shown in FIG. 2, an alignment pressure roller type steel straightening machine with an extending function includes a first traction mechanism at a front portion of the straightening machine, a second traction mechanism at a rear end of the first traction mechanism, and a second traction mechanism. The straightening and extending mechanism of the rear end and the feeding mechanism at the rear end of the straightening and extending mechanism; the two rows of straightening wheels 8 of the straightening and extending mechanism are placed horizontally. The rest of the structure is the same as that of the first embodiment.

Example 3

As shown in FIG. 3, an alignment pressure roller type steel straightening machine with an extending function includes a first traction mechanism at a front portion of the straightening machine, a second traction mechanism at a rear end of the first traction mechanism, and a second traction mechanism. a straightening and extending mechanism at the rear end and a feeding mechanism at the rear end of the straightening and extending mechanism; the straightening and extending mechanism is composed of a horizontal straightening and extending mechanism and a vertical straightening and extending mechanism, the horizontal straightening and extending mechanism is horizontally placed, and the vertical straightening and extending mechanism is vertically placed. The vertical straightening extension mechanism is composed of a straightening wheel frame 7, two rows of straightening wheels 8 and a straightening wheel adjusting assembly 9, and the two rows of straightening wheels are mounted on the straightening wheel frame 7 through the straightening wheel axle 10 and the bearing 11 That is, they are all passive and are offset from each other on the processed steel bar 6; the structure of the horizontal straightening and extending mechanism is the same as that of the vertical straightening and extending mechanism. The rest of the structure is the same as that of the first embodiment.

Example 4

As shown in FIG. 4: an alignment pressure roller type steel straightening machine with an extending function, the first traction mechanism is located between the second traction mechanism and the straightening extension mechanism. The rest of the structure is the same as that of the first embodiment.

Example 5

As shown in FIG. 5: an alignment pressure roller type steel straightening machine with an extending function, the first traction mechanism is located between the second traction mechanism and the straightening extension mechanism. The rest of the structure is the same as that of the second embodiment.

Example 6

As shown in FIG. 6 : an alignment pressure roller type steel straightening machine with an extending function, the first traction mechanism is located between the second traction mechanism and the straightening extension mechanism. The rest of the structure is the same as that of the third embodiment.

Claims (8)

1. An alignment roller type steel bar straightening method with an extension function, which uses a two-row straightening wheel which is staggered from each other to straighten the steel bar by repeatedly bending the steel bar, and the two rows of straightening wheels are located behind the straightening machine Segments, all of which are passive straightening wheels. The rebars are pulled forward by the traction wheels located in the front section of the straightening machine. The steel bars are driven to rotate the straightening wheels at the rear of the straightening machine, and the steel bars are repeatedly bent to make the steel bars adjusted. Straight and extended.

2. An alignment pressure roller type steel straightening machine with an extension function, comprising: a traction mechanism at a front portion of the straightening machine and a straightening and extending mechanism at a rear end of the traction mechanism; the straightening and extending mechanism is a straightening wheel frame, The two rows of straightening wheels and straightening wheel adjustment components are composed. The two rows of straightening wheels are mounted on the straightening wheel frame through the straightening wheel axles and bearings, that is, they are all passive and are mutually offset and pressed against the processed steel bars.

3. The aligned pressure roller type steel bar straightening machine with extended function according to claim 2, wherein the traction mechanism comprises a first traction mechanism and a second traction mechanism, and the first traction mechanism comprises a traction wheel frame and a lower traction wheel. The upper traction wheel and the traction wheel adjusting component are assembled. The upper traction wheel and the lower traction wheel are mounted on the traction wheel frame through the traction wheel axle, the traction wheel adjusting component is connected with the traction wheel axle, and the upper traction wheel and the lower traction wheel pass the traction wheel axle and the prime mover The power output components are connected, that is, the upper traction pulley and the lower traction pulley are active and aligned with each other, and the upper traction pulley and the lower traction pulley sandwich the processed steel bar under the action of the traction wheel adjustment component; the second traction mechanism traction mechanism The traction wheel frame, the lower traction wheel, the upper traction wheel and the traction wheel adjusting assembly are arranged. The lower traction wheel is mounted on the traction wheel frame through the traction wheel shaft, and the upper traction wheel is mounted on the traction wheel frame through the traction wheel shaft and the bearing, and the traction wheel is adjusted. The assembly is connected to the traction sheave shaft, and the lower traction sheave is connected to the power take-off assembly of the prime mover through the traction sheave shaft, that is, the lower traction sheave is active, the upper traction Passive wheel, and aligned with each other, and the traction sheave traction sheave sandwiched between the steel is processed under the action of the traction sheave of the adjustment assembly.

4. The alignment pressure roller type steel straightening machine with an extension function according to claim 3, further comprising a feeding mechanism at a rear end of the straightening and extending mechanism, wherein the feeding mechanism is provided by a feeding wheel frame, a lower row feeding wheel, and a feeding mechanism. The feeding wheel and the feeding wheel adjusting component are composed. The lower feeding roller and the upper feeding roller are mounted on the feeding wheel frame through the feeding wheel shaft, the feeding wheel adjusting assembly is connected with the feeding wheel shaft, and the feeding wheel shaft is connected with the prime mover through the clutch and aligned with each other The lower row feeding wheel and the upper row feeding wheel sandwich the processed steel bar under the action of the feeding wheel adjusting component, and are active when the clutch is combined, passive when the clutch is separated, and the axis of the lower row feeding wheel and the upper row feeding wheel. Both are perpendicular to the axis of the steel being processed.

5. The alignment roller compaction straightener with extended function according to claim 3, wherein the first traction mechanism is located between the second traction mechanism and the straightening extension mechanism.

6. The aligned pressure roller type steel straightening machine with an extension function according to claim 3, wherein the two rows of straightening wheels of the straightening and extending mechanism are placed in a horizontal direction.

7. The alignment roller type rebar straightening machine with an extension function according to claim 3, wherein the two rows of straightening wheels of the straightening and extending mechanism are placed in a vertical direction.

8. The alignment pressure roller type steel straightening machine with extension function according to claim 3, wherein the straightening and extending mechanism is composed of a horizontal straightening and extending mechanism and a vertical straightening and extending mechanism, and the horizontal straightening and extending mechanism is horizontally oriented. Place the vertical alignment extension mechanism vertically.

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