CN211877599U - Rebar bending test device - Google Patents

Abstract

The utility model belongs to the technical field of the reinforcing bar capability test technique and specifically relates to a crooked detection test device of reinforcing bar is related to, its technical scheme main points are: the clamping device comprises a case, a working disc, a fixed rod, a pressing arm and an adjusting mechanism, wherein a bending core is arranged at the rotating center of the working disc, the fixed rod is arranged on the upper surface of the case, one end of the pressing arm is hinged with the fixed rod, the fixed rod is provided with a sliding block in a sliding manner along the length direction of the fixed rod, the sliding block is rotatably provided with a propping column close to the side wall of the pressing arm, and the central shaft of the propping column is arranged along the vertical; the chassis is provided with a driving component, and the driving component is used for driving the sliding block to move along the length direction of the fixed rod; the side wall of the pressing arm close to the abutting column is provided with a sliding plate in a sliding mode along the length direction of the pressing arm, and a reset piece is arranged between the sliding plate and the pressing arm. The test device can reduce the shaking condition of the reinforcing steel bar, thereby reducing the scraping and scratching conditions of the end part of the reinforcing steel bar to workers.

Description

Rebar bending test device

technical field

The utility model relates to the technical field of steel bar performance testing, in particular to a steel bar bending detection test device.

Background technique

The steel bar bending detection test device is a test device for cold bending test and plane reverse bending test of steel bar. It is widely used in metallurgy, machinery manufacturing, construction industry, engineering supervision, technical quality supervision and other units.

Referring to FIG. 1, the steel bar bending detection test device in the prior art mainly includes a case 1, a work plate 2 detachably connected to the case 1, a drive mechanism arranged in the case 1 for driving the work plate 2 to rotate, and a The pressure head 2b on the plate 2 for compressing the bending of the steel bar, the bending center 2a detachably connected to the center of the working plate 2, the fixed rod 3 fixedly connected to the chassis 1, and the pressing arm 4 hinged on the fixed rod 3 at one end and an adjusting mechanism 5 hingedly connected to the end of the pressing arm 4 away from the fixing rod 3 , the adjusting mechanism 5 is arranged on the upper surface of the case 1 and is used to drive the pressing arm 4 to swing. During the cold bending test of the steel bar, place the steel bar between the bending center 2a and the compression arm 4, and then the compression arm 4 presses the steel bar on the bending center 2a through the adjusting mechanism 5, and then drives the work through the driving mechanism. The disc 2 rotates, so that the indenter 2b presses the steel bar to bend around the bending center 2a.

The above-mentioned prior art scheme has the following defects: when the indenter 2b rotates with the working disc 2 and exerts force on the steel bar so that the steel bar is bent to the maximum angle around the bending center 2a, the working disc 2 is usually driven to reversely rotate a certain angle to release the pressure head. The abutting effect of 2b on the steel bar is for the staff to take out the steel bar; but when the work plate 2 is reversed, the bent steel bar will rebound, so that the end of the steel bar abutting on the pressing arm 4 will shake, which is It is convenient to pick and place the steel bars. The ends of the steel bars usually extend beyond the workbench, which may cause scratches and scratches to the staff due to the shaking of the steel bars.

SUMMARY OF THE INVENTION

Aiming at the deficiencies of the prior art, one of the purposes of the present invention is to provide a test device for the bending detection of steel bars, which can reduce the shaking of the steel bars, thereby reducing the situation that the ends of the steel bars cause scratches and scratches to the staff. .

The above-mentioned technical purpose of the present utility model is achieved through the following technical solutions: a steel bar bending detection test device, including a chassis, a work plate, a fixed rod, a pressing arm and an adjustment mechanism, and the rotation center of the work plate is provided with a bending The fixing rod is arranged on the upper surface of the chassis, one end of the pressing arm is hinged with the fixing rod, and the fixing rod slides along the length of the fixing rod with a sliding block, and the sliding block is close to the The side wall is rotated with an abutting column, and the central axis of the abutting column is arranged in the vertical direction; the chassis is provided with a driving component, and the driving component is used to drive the sliding block to move along the length direction of the fixed rod; the A sliding plate is provided on the side wall of the pressing arm close to the pressing column to slide along the length direction of the pressing arm, and a reset piece is arranged between the sliding plate and the pressing arm.

By adopting the above technical scheme, the steel bars are placed in the area between the compression arm and the bending center, and the compression arm is driven to rotate in the direction close to the bending center by the adjusting mechanism, so that the sliding plate of the side wall of the compression arm and the bending center clamp the steel bars. Then, use the drive assembly to drive the sliding block close to the compression arm until the side wall of the abutting column is in contact with the steel bar, and use the abutting column and the sliding plate to clamp the end of the steel bar, which can reduce the shaking of the steel bar. It can reduce the scratches and scratches caused by the end of the steel bar to the staff; at the same time, in the process of bending the steel bar, the steel bar will also move along the length of the compression arm. At this time, the abutting column can follow the steel bar. At the same time, the sliding plate can slide relative to the pressing arm with the movement of the steel bar, thereby reducing the relative friction between the outer wall of the steel bar and the sliding plate and the abutting column, which causes the sliding plate and the abutting column to wear.

Preferably, the lower end of the sliding block is provided with a chute, and the fixing rod is slidably connected to the chute.

By adopting the above technical solution, the fixed rod and the chute are slidably connected, that is, the sliding connection between the sliding movement and the fixed rod is realized, and the structure is simple and practical.

Preferably, the driving assembly includes a driving screw and a connecting block, the driving screw is rotatably arranged on the upper surface of the case along the length direction of the fixing rod, and one end is connected with a driving member; the connecting block is threadedly connected to the driving screw, and is connected with the driving screw. The sliders are connected.

By adopting the above technical solution, the connection relationship between the connecting block and the sliding block has a limiting effect on the connecting block, so that the connecting block can move along the length direction of the driving screw after being driven by the rotation of the driving screw, thereby driving the sliding block along the fixing rod. At the same time, the connection relationship between the sliding block and the connecting block can also limit the sliding block, restricting the sliding block vertically upward and disengaging from the fixing rod.

Preferably, an end of the connecting block close to the sliding block is provided with a mounting block, and the mounting block is connected with the sliding block through bolts.

By adopting the above technical solution, the mounting block and the sliding block are connected by bolts, that is, the detachable connection between the connecting block and the sliding block is realized, which facilitates the installation and removal of the sliding block.

Preferably, a first mounting plate and a second mounting plate are provided on the side wall of the sliding block close to the pressing arm, and the first mounting plate and the second mounting plate are arranged at intervals in the vertical direction, and the first mounting plate and the second mounting plate are arranged vertically. An installation shaft is arranged between the plate and the second installation plate, and the abutting column is rotatably sleeved on the installation shaft.

By adopting the above technical solution, the abutting column is rotatably mounted on the installation shaft, that is, the rotational connection between the abutting column and the sliding block is realized.

Preferably, the first mounting plate is located above the second mounting plate, the first mounting plate is provided with vertical threaded holes, the second mounting plate is provided with a positioning groove; the lower end of the mounting shaft is inserted In the positioning groove, the upper end of the installation shaft is provided with a threaded section, and the threaded section is threadedly matched with the threaded hole; the upper end of the installation shaft is higher than the first installation plate, and is provided with a power assist part.

By adopting the above technical solution, the abutting column is used to press the steel bar for a long time, and it is inevitable that wear will occur. By rotating the installation shaft by the power assist part, the installation shaft can be removed from the first installation plate and the second installation plate, which is convenient to achieve the abutment Column replacement.

Preferably, the side wall of the pressing arm close to the sliding plate is provided with a trapezoidal groove, the side wall of the sliding plate near the pressing arm is provided with a trapezoidal block, and the trapezoidal block is slidingly matched with the trapezoidal groove.

By adopting the above technical solution, the trapezoidal block and the trapezoidal groove are slidably matched to realize the sliding connection between the sliding plate and the pressing arm, and the structure is simple and the stability is high.

Preferably, a fixing block is provided on the side of the sliding plate away from the hinge end of the pressing arm, and an accommodating groove is provided along the length direction of the pressing arm on the end of the pressing arm away from the hinge end; the reset member is a reset spring, The return spring is arranged in the accommodating groove, and one end of the restoring spring is connected to the bottom of the accommodating groove, and the other end is connected to the fixing block; when the restoring spring is in a natural state, the pressing arm is away from the hinged connection The end face of the end is in contact with the fixing block.

By adopting the above technical solution, when the sliding plate slides relative to the pressing arm with the movement of the steel bar, the return spring is stretched. The sliding plate can be returned to its original position.

Preferably, the fixing block is connected with the sliding plate through bolts.

By adopting the above technical solution, when the sliding plate is seriously worn due to long-term contact and friction with the steel bars, the bolts are removed to separate the fixing block from the sliding plate, which facilitates the disassembly and replacement of the worn sliding plate.

To sum up, the present utility model includes at least one of the following beneficial technical effects:

1. Reduce the shaking of the steel bar, so as to reduce the scratches and scratches caused by the end of the steel bar to the staff, and at the same time, reduce the relative friction between the outer wall of the steel bar and the sliding plate and the abutting column, which causes the sliding plate and the abutting column to wear. Happening;

2. Both the sliding plate and the abutting column are easy to disassemble. When the sliding plate or the abutting column is worn, it is easy to replace.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of the steel bar bending detection test device pointed out in the background technology of the present utility model.

FIG. 2 is a schematic diagram of the overall structure of the embodiment of the present invention.

3 is a schematic diagram of the installation structure of the sliding block and the abutting column in the embodiment of the present invention.

4 is a top view of the pressing arm and the sliding plate in the embodiment of the present invention.

FIG. 5 is a cross-sectional view taken along the line A-A in FIG. 4 .

FIG. 6 is a cross-sectional view taken along the direction B-B in FIG. 5 .

FIG. 7 is an enlarged schematic structural diagram of part C in FIG. 6 .

Reference signs: 1. Chassis; 2. Working plate; 2a, Bending center; 2b, Press head; 3, Fixing rod; 4, Pressing arm; 4a, Trapezoid groove; 51, fixed seat; 52, adjusting screw; 52a, hand wheel; 6, sliding block; 6a, chute; 61, first mounting plate; 61a, threaded hole; 62, second mounting plate; 62a, positioning groove; 63 , installation shaft; 63a, thread segment; 63b, booster part; 63c, hexagonal socket; 7, drive assembly; 71, drive screw; 71a, runner; 72, connection block; 72a, mounting block; 8, abutting Column; 9. Sliding plate; 9a, trapezoidal block; 10, fixed block; 11, return spring.

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings.

Referring to FIG. 2, it is a steel bar bending detection test device disclosed by the utility model, including a chassis 1, a working plate 2, a fixing rod 3, a pressing arm 4 and an adjusting mechanism 5, wherein the upper surface of the chassis 1 is rectangular, and the working plate 2 is rotatably mounted on the upper surface of the case 1, and a drive motor (not shown in the figure) is installed in the case 1 to drive the working disk 2 to rotate. At the same time, a bending center 2a is installed on the rotation center of the work plate 2, and an indenter 2b is eccentrically installed on the upper surface of the work plate 2. The indenter 2b is used to press the steel bar to bend around the bend center 2a when the work plate 2 rotates. The fixing rod 3 is a long rod with a rectangular section, and is fixedly installed on one side of the width direction of the case 1 , and the length direction of the fixing rod 3 is the same as that of the case 1 .

2, the pressing arm 4 is in the shape of a long square rod, and one end of the pressing arm 4 is hinged with the fixing rod 3; at the same time, the adjusting mechanism 5 is installed on one side of the longitudinal direction of the upper surface of the chassis 1 for driving the pressing The tightening arm 4 rotates around the hinged end. Specifically, the adjusting mechanism 5 includes a fixing base 51 and an adjusting screw 52, the fixing base 51 is fixedly installed on the upper surface of the case 1, and the adjusting screw 52 is threadedly connected to the fixing base 51 along the length direction of the case 1; the adjusting screw 52 penetrates the fixing base 51, And one end of the adjusting screw 52 close to the pressing arm 4 is hinged with the side wall of the pressing arm 4, and the other end is mounted with a hand wheel 52a.

Referring to FIGS. 2 and 3 , the fixed rod 3 is slidably installed with a sliding block 6 along the length direction of the fixed rod 3, and the lower surface of the sliding block 6 is provided with a chute 6a; The sliding groove 6a is slidably matched, thereby realizing the sliding connection between the sliding block and the fixing rod 3 . Meanwhile, a drive assembly 7 for driving the sliding block 6 to move along the length direction of the fixing rod 3 is installed on the chassis 1 . Specifically, the drive assembly 7 includes a drive screw 71 and a connecting block 72 . The driving screw 71 is rotatably mounted on the upper surface of the case 1 along the length direction of the fixing rod 3, and a driving member is installed at one end of the driving screw 71; in this embodiment, the driving member is a runner 71a. The connecting block 72 is threadedly connected to the driving screw 71, and the side wall of the connecting block 72 close to the sliding block 6 is integrally formed with a mounting block 72a, the mounting block 72a is in contact with the side wall of the sliding block 6, and the mounting block 72a and the sliding block 6 are connected by bolts connected. The worker rotates the driving screw 71 through the runner 71 a, and uses the connection block 72 to connect the sliding block 6 to drive the sliding block 6 to move along the length direction of the fixed rod 3 .

Referring to FIG. 3 , a first mounting plate 61 and a second mounting plate 62 are rotatably mounted on the sliding block 6 close to the side wall of the pressing arm 4 , and the first mounting plate 61 and the second mounting plate 62 are arranged at intervals in the vertical direction, and the first An abutting column 8 is rotatably installed between a mounting plate 61 and a second mounting plate 62 . The first mounting plate 61 is located above the second mounting plate 62 , and the first mounting plate 61 is provided with threaded holes 61 a along the vertical direction; correspondingly, the second mounting plate 62 is provided with a positioning groove 62 a .

Referring to FIG. 3 , in order to realize the installation of the abutting column 8, an installation shaft 63 is detachably installed between the first installation plate 61 and the second installation plate 62, and the lower end of the installation shaft 63 is inserted into the positioning groove 62a, and the installation shaft The upper part of the 63 is provided with a threaded section 63a, and the threaded section 63a is threaded with the threaded hole 61a of the first mounting plate 61 . At the same time, the upper end of the mounting shaft 63 is high on the upper surface of the first mounting plate 61, and a disc-shaped booster portion 63b is fixedly installed. The abutting column 8 is rotatably sleeved on the installation shaft 63 , that is, the rotational connection between the abutting column 8 and the sliding block 6 is realized.

4 and 5, the side wall of the pressing arm 4 close to the sliding block 6 is installed with a sliding plate 9 along the length direction of the pressing arm 4, and a reset piece is installed between the sliding plate 9 and the pressing arm 4; Specifically, the side wall of the pressing plate close to the sliding plate 9 is provided with a trapezoidal groove 4a along the length direction of the pressing plate. Correspondingly, a trapezoidal block 9a is installed on the side wall of the sliding plate 9 near the pressing arm 4. The trapezoidal block 9a In sliding cooperation with the trapezoidal groove 4a, the sliding connection between the sliding plate 9 and the pressing arm 4 is realized.

6 and 7 , the side of the sliding plate 9 away from the hinged end of the pressing arm 4 is bolted to the fixing block 10 . At the same time, one end of the pressing arm 4 away from the hinged end is provided with an accommodating groove 4b along the length direction of the pressing arm 4. The reset member is a reset spring 11, the reset spring 11 is accommodated in the accommodating groove 4b, and one end of the reset spring 11 is fixed It is connected to the bottom of the accommodating groove 4b, and the other end is connected to the fixing block 10. When the return spring 11 is in a natural state, the end face of the pressing arm 4 away from the hinged end abuts against the fixing block 10 .

The implementation principle of this embodiment is as follows: the steel bar is placed in the area between the pressing arm 4 and the bending center 2a, and the pressing arm 4 is driven by the adjusting mechanism 5 to rotate in the direction close to the bending center 2a, so that the side wall of the pressing arm 4 is rotated. The sliding plate 9 and the bending center 2a clamp the steel bar; then, use the drive assembly 7 to drive the sliding block 6 to approach the pressing arm 4 until the side wall of the abutting column 8 is in contact with the steel bar, and the pressing column 8 and the sliding plate 9 are used. Clamping the end of the steel bar can reduce the shaking of the steel bar, so as to reduce the scratches and scratches caused by the end of the steel bar to the staff.

At the same time, in the process of bending the steel bar, the steel bar will also move with the length direction of the pressing arm 4. At this time, the abutting column 8 can rotate with the steel bar movement, and at the same time, the sliding plate 9 can move with the steel bar. The relative compression arm 4 slides, thereby reducing the relative friction between the outer wall of the steel bar and the sliding plate 9 and the abutting column 8, which causes the sliding plate 9 and the abutting column 8 to wear.

In addition, when the abutting column 8 is worn, the mounting shaft 63 is rotated by the assisting portion 63b and the mounting shaft 63 is removed from between the first mounting plate 61 and the second mounting plate 62, so that the abutting column 8 can be easily removed. When the sliding plate 9 is worn, remove the bolt to separate the fixing block 10 from the sliding plate 9, and then the sliding plate 9 can be detached and replaced.

The examples of this specific embodiment are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore: all equivalent changes made according to the structure, shape and principle of the present invention are not It should be covered within the protection scope of the present invention.

Claims (9)

1. A steel bar bending detection test device, comprising a chassis (1), a work plate (2), a fixing rod (3), a pressing arm (4) and an adjustment mechanism (5), the rotation of the work plate (2) The center is provided with a bending center (2a), the fixing rod (3) is arranged on the upper surface of the chassis (1), and one end of the pressing arm (4) is hinged with the fixing rod (3), characterized in that: the fixing The rod (3) slides along the length direction of the fixed rod (3) and is provided with a sliding block (6). The central axis of the abutting column (8) is arranged in the vertical direction; the chassis (1) is provided with a driving component (7), and the driving component (7) is used to drive the sliding block (6) along the fixing rod ( 3) movement in the length direction; the side wall of the pressing arm (4) close to the pressing column (8) slides along the length direction of the pressing arm (4) and is provided with a sliding plate (9), the sliding A reset piece is arranged between the plate (9) and the pressing arm (4). 2. The steel bar bending detection test device according to claim 1, characterized in that: the lower end of the sliding block (6) is provided with a chute (6a), and the fixing rod (3) slides with the chute (6a) connect. 3 . The test device for testing steel bar bending according to claim 1 or 2 , wherein the drive assembly ( 7 ) comprises a drive screw ( 71 ) and a connecting block ( 72 ), and the drive screw ( 71 ) is fixed along the The rod (3) is rotatably arranged on the upper surface of the casing (1) in the longitudinal direction, and one end is connected with a driving member; the connecting block (72) is threadedly connected to the driving screw (71) and is connected to the sliding block (6). 4. The bending detection test device for steel bars according to claim 3, characterized in that: one end of the connecting block (72) close to the sliding block (6) is provided with a mounting block (72a), and the mounting block (72a) passes through the The bolt is connected with the sliding block (6). 5. The steel bar bending detection test device according to claim 1, characterized in that: a first mounting plate (61) and a second mounting plate are provided on the side wall of the sliding block (6) close to the pressing arm (4) (62), the first mounting plate (61) and the second mounting plate (62) are arranged at intervals along the vertical direction, and a space between the first mounting plate (61) and the second mounting plate (62) is provided An installation shaft (63) is provided, and the abutting column (8) is rotatably sleeved on the installation shaft (63). 6 . The testing device for testing steel bar bending according to claim 5 , wherein the first mounting plate ( 61 ) is located above the second mounting plate ( 62 ), and the first mounting plate ( 61 ) is provided with 6 . a vertical threaded hole (61a), the second mounting plate (62) is provided with a positioning groove (62a); the lower end of the mounting shaft (63) is inserted into the positioning groove (62a), the mounting shaft (63) ) is provided with a threaded segment (63a) on the upper end, and the threaded segment (63a) is threadedly matched with the threaded hole (61a); the upper end of the mounting shaft (63) is higher than the first mounting plate (61), and is provided with Assisting part (63b). 7. The steel bar bending detection test device according to claim 1, characterized in that: the side wall of the pressing arm (4) close to the sliding plate (9) is provided with a trapezoidal groove (4a), and the sliding plate (9) is provided with a trapezoidal groove (4a). (9) A trapezoidal block (9a) is provided near the side wall of the pressing arm (4), and the trapezoidal block (9a) is slidingly matched with the trapezoidal groove (4a). 8. The bending detection test device for steel bars according to claim 1 or 7, characterized in that: a side of the sliding plate (9) away from the hinged end of the pressing arm (4) is provided with a fixing block (10), and the The end of the pressing arm (4) away from the hinged end is provided with an accommodating groove (4b) along the length direction of the pressing arm (4); the reset member is a reset spring (11), and the reset spring (11) is arranged in the groove (4b), and one end of the return spring (11) is connected to the bottom of the accommodating groove (4b), and the other end is connected to the fixing block (10); when the return spring (11) is in a natural state, all The end face of the pressing arm (4) away from the hinged end abuts against the fixing block (10). 9 . The test device for detecting the bending of steel bars according to claim 8 , wherein the fixing block ( 10 ) is connected with the sliding plate ( 9 ) through bolts. 10 .

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