Steel bar bending tester

Abstract

A steel bar bending testing machine comprises a bottom bearing table, a to-be-tested steel bar, a movable clamping block, a bending block, a clamping hydraulic cylinder, a bending driving motor, a bending claw bearing block, a bending driving claw and a driving claw lifting hydraulic cylinder, the surface of the bottom bearing table is provided with a control panel, a fixed clamping block and a clamping positioning groove, and the control panel is located at the corner of the bottom bearing table; the fixed clamping block is located in the transverse center of the bottom bearing table, the clamping positioning groove is located in the side face of the fixed clamping block, a clamping positioning groove is formed in the side face of the fixed clamping block, a clamping positioning block is arranged at the bottom of the movable clamping block, the clamping positioning block is matched with the clamping positioning groove, the clamping positioning block is connected with the clamping positioning groove, and the clamping positioning block slides in the clamping positioning groove. The top of the bottom bearing table is fixedly connected with a clamping hydraulic cylinder, and a hydraulic rod of the clamping hydraulic cylinder is fixedly connected with a movable clamping block.

Description

Technical Field

[0001] The utility model relates to the field of steel bar bending tests, in particular to a steel bar bending testing machine. Background Art

[0002] The existing patent (announcement number: CN219675721U) proposes a steel bar bending testing machine, including a workbench, a fixed seat is provided on the rear end side of the upper surface of the workbench, an adjusting screw is inserted on the inner surface of the fixed seat, a mounting pillow is provided on the front end side of the upper surface of the workbench, a support rod is movably provided on one side of the upper surface of the mounting pillow, a limit plate is movably provided on the other side of the upper surface of the mounting pillow, an "L"-shaped limit ear is provided on the end side of the limit plate away from the mounting pillow, and a working disk is provided on one side of the middle part of the upper surface of the workbench. However, in this device, "the threaded positioning column will form a bending angle for the steel bar together with the bending roller, and the bending of the steel bar is completed under the rotation of the working disk". The threaded positioning column will form a bending angle for the steel bar together with the bending roller. The opening is upward, and during the steel bar bending operation, the steel bar may break away from the threaded positioning column and bounce upward. The kinetic energy of the steel bar is large when it bounces up, which is dangerous, thereby affecting the safety of use of this device. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the utility model provides a steel bar bending test machine, in which the steel bar to be tested is clamped by a fixed clamping block and a dynamic clamping block during a steel bar bending test operation, and after the clamping is completed, the protective grille is inserted into the interior of the protective grille connecting groove, so that the rear part of the steel bar to be tested will not bounce up and cause danger during the experiment. At the same time, during the bending test, the bending protection platform is always located above the steel bar to be tested, so that the bent part of the front part of the steel bar to be tested is also limited by the bending protection platform and will not bounce up and cause danger during the bending process. The experimental process is safer and the stability is better.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A steel bar bending testing machine, comprising a bottom bearing platform, a steel bar to be tested, a moving clamping block, a bending block, a clamping hydraulic cylinder, a bending driving motor, a bending claw bearing block, a bending driving claw, and a driving claw lifting hydraulic cylinder. The surface of the bottom bearing platform is provided with a control panel, a fixed clamping block, and a clamping positioning groove. The control panel is located at the corner of the bottom bearing platform. The fixed clamping block is in the horizontal center position of the bottom bearing platform. The clamping positioning groove is located on the side of the fixed clamping block. The side of the fixed clamping block is provided with a clamping positioning groove. The bottom of the moving clamping block is provided with a clamping positioning block, which is adapted to the clamping positioning groove. The clamping positioning block is connected to the clamping positioning groove and slides inside the clamping positioning groove. The top of the bottom bearing platform is fixedly connected to the clamping hydraulic cylinder. The hydraulic rod of the clamping hydraulic cylinder is fixedly connected to the moving clamping block. The top of the moving clamping block is provided with a protective grille. The top of the fixed clamping block is provided with a protective grille connecting groove, which is adapted to the protective grille.

[0006] The protective grille connecting groove is connected to the protective grille, and the protective grille slides inside the protective grille connecting groove. The steel bar to be tested is placed on the upper part of the bottom bearing platform. The fixed clamping block and the moving clamping block are respectively pressed on both sides of the steel bar to be tested. The bending driving motor is inserted and fixed inside the clamping positioning groove. The transmission shaft of the bending driving motor is fixedly connected to the bending block. The bottom arc surface of the bending block is tangent to the plane on the side of the fixed clamping block close to the moving clamping block. The top of the bending block is provided with a bending protection platform. The top of the bending protection platform is provided with a bearing block connecting column. The middle part of the bending claw bearing block is provided with a bearing block connecting groove, which is adapted to the bearing block connecting column.

[0007] The bearing block connecting groove is connected to the bearing block connecting column, and the bearing block connecting groove rotates outside the bearing block connecting column. Both sides of the bending claw bearing block are provided with driving claw connecting blocks, which are adapted to the bending driving claws. The driving claw connecting blocks are connected to the bending driving claws, and the bending driving claws slide inside the driving claw connecting blocks.

[0008] The top of the driving claw connecting block is fixedly connected to the driving claw lifting hydraulic cylinder. The hydraulic rod of the driving claw lifting hydraulic cylinder is fixedly connected to the bending driving claw. The bending block is pressed on one side of the steel bar to be tested, and the bending driving claw is pressed on the other side of the steel bar to be tested.

[0009] Beneficial effects: 1. During the process of conducting a steel bar bending test operation with the present utility model, the steel bar to be tested is clamped by the fixed clamping block and the moving clamping block. After clamping, the protective grille is inserted into the protective grille connecting groove, so that the rear part of the steel bar to be tested will not bounce up during the experiment, causing danger. At the same time, during the bending test process, the bending protection platform is always located above the steel bar to be tested, so that the bent part at the front of the steel bar to be tested is also limited by the bending protection platform and will not bounce up during the bending process, causing danger. The experimental process is safer and has better stability.

[0010] 2. The designed length of the clamping and positioning groove of the present utility model is greater than the overall width of the movable clamping block. When the movable clamping block retracts to the limit range, the protective grille is completely disconnected from the protective grille connecting groove and has a certain distance, enabling the operator to place the steel bar to be tested from above without having to pass through the gap between the movable clamping block and the fixed clamping block, making the placement operation of the steel bar to be tested more convenient and fast.

[0011] 3. During the process of the steel bar bending test operation of the present utility model, the two bending driving claws simultaneously apply bending force to the steel bar to be tested, reducing the force on a single bending driving claw, avoiding damage to a single bending driving claw due to excessive pressure for a long time, and increasing the service life of a single bending driving claw.

[0012] 4. The connecting groove of the bearing block of the present utility model is rotatably connected to the bearing block connecting column. When this device faces steel bars to be tested with different radii, through the rotation of the bending claw bearing block itself, the bending driving claws on both sides can effectively contact the steel bar to be tested, enabling this device to effectively test steel bars to be tested with different radii. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of a steel bar bending testing machine according to the present utility model.

[0014] Figure 2 is an exploded view of the installation state of the movable clamping block according to the present utility model.

[0015] Figure 3 is an exploded view of the installation state of the bending driving motor according to the present utility model.

[0016] Figure 4 is a schematic structural diagram of the bottom bearing platform according to the present utility model.

[0017] Figure 5 is a schematic structural diagram of the movable clamping block according to the present utility model.

[0018] Figure 6 is a schematic structural diagram of the bending block according to the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The present utility model will be further described in detail below with reference to the drawings and embodiments:

[0020] Embodiment 1:

[0021] A steel bar bending testing machine, comprising a bottom bearing platform 1, a steel bar 5 to be tested, a movable clamping block 6, a bending block 8, a clamping hydraulic cylinder 9, a bending drive motor 13, a bending claw bearing block 16, a bending drive claw 19, and a drive claw lifting hydraulic cylinder 20. The surface of the bottom bearing platform 1 is provided with a control panel 2, a fixed clamping block 3, and a clamping positioning groove 12. The control panel 2 is located at the corner of the bottom bearing platform 1. The fixed clamping block 3 is in the horizontal center position of the bottom bearing platform 1. The clamping positioning groove 12 is located on the side of the fixed clamping block 3. The side of the fixed clamping block 3 is provided with the clamping positioning groove 12. The bottom of the movable clamping block 6 is provided with a clamping positioning block 11. The clamping positioning block 11 is adapted to the clamping positioning groove 12. The clamping positioning block 11 is connected to the clamping positioning groove 12. The clamping positioning block 11 slides inside the clamping positioning groove 12. The designed length of the clamping positioning groove 12 is greater than the overall width of the movable clamping block 6. When the movable clamping block 6 retracts to the limit range, the protective grille 7 and the protective grille connection groove 4 are completely disconnected and have a certain distance, so that the operator can place the steel bar 5 to be tested from above without having to pass it through the gap between the movable clamping block 6 and the fixed clamping block 3, making the placement operation of the steel bar 5 to be tested more convenient and fast. The top of the bottom bearing platform 1 is fixedly connected to the clamping hydraulic cylinder 9. The hydraulic rod of the clamping hydraulic cylinder 9 is fixedly connected to the movable clamping block 6. The top of the movable clamping block 6 is provided with a protective grille 7. The top of the fixed clamping block 3 is provided with a protective grille connection groove 4. The protective grille connection groove 4 is adapted to the protective grille 7.

[0022] Embodiment 2:

[0023] The protective grille connection groove 4 of the present utility model is connected to the protective grille 7. The protective grille 7 slides inside the protective grille connection groove 4. The steel bar 5 to be tested is placed on the upper part of the bottom bearing platform 1. The fixed clamping block 3 and the movable clamping block 6 are respectively pressed on both sides of the steel bar 5 to be tested. During the process of the steel bar bending test operation, the steel bar 5 to be tested is clamped by the fixed clamping block 3 and the movable clamping block 6. After the clamping is completed, the protective grille 7 is inserted into the protective grille connection groove 4, so that the rear part of the steel bar 5 to be tested will not bounce up during the experiment to cause danger. At the same time, during the bending test process, the bending protection platform 14 is always located above the steel bar 5 to be tested, so that the bent part of the front part of the steel bar 5 to be tested is also limited by the bending protection platform 14 and will not bounce up during the bending process to cause danger. The experimental process is safer and has better stability. The bending drive motor 13 is inserted and fixed inside the clamping positioning groove 12. The transmission shaft of the bending drive motor 13 is fixedly connected to the bending block 8. The bottom arc surface of the bending block 8 is tangent to the plane on the side of the fixed clamping block 3 close to the movable clamping block 6. The top of the bending block 8 is provided with a bending protection platform 14. The top of the bending protection platform 14 is provided with a bearing block connecting column 15. The middle of the bending claw bearing block 16 is provided with a bearing block connection groove 17. The bearing block connection groove 17 is adapted to the bearing block connecting column 15.

[0024] Embodiment 3:

[0025] The load-bearing block connection groove 17 of the present utility model is connected to the load-bearing block connection column 15. The load-bearing block connection groove 17 rotates outside the load-bearing block connection column 15. The load-bearing block connection groove 17 is rotatably connected to the load-bearing block connection column 15. When this device faces test steel bars 5 with different radii, through the rotation of the bending claw load-bearing block 16 itself, the bending drive claws 19 on both sides can effectively contact the test steel bars 5. Thus, this device can effectively test test steel bars 5 with different radii. On both sides of the bending claw load-bearing block 16, there are drive claw connection blocks 18. The drive claw connection blocks 18 are adapted to the bending drive claws 19. The drive claw connection blocks 18 are connected to the bending drive claws 19, and the bending drive claws 19 slide inside the drive claw connection blocks 18.

[0026] Embodiment 4:

[0027] At the top of the drive claw connection block 18 of the present utility model, a drive claw lifting hydraulic cylinder 20 is fixedly connected. The hydraulic rod of the drive claw lifting hydraulic cylinder 20 is fixedly connected to the bending drive claw 19. The bending block 8 is pressed against one side of the test steel bar 5, and the bending drive claw 19 is pressed against the other side of the test steel bar 5. During the process of performing the steel bar bending test operation, the two bending drive claws 19 simultaneously apply a bending force to the test steel bar 5, reducing the force borne by a single bending drive claw 19, avoiding damage to a single bending drive claw 19 due to excessive pressure for a long time, and increasing the service life of a single bending drive claw 19.

[0028] Embodiment 5:

[0029] Installation steps of the present utility model: Fix the top of the bottom load-bearing table 1 to the clamping hydraulic cylinder 9. Insert the clamping positioning block 11 of the moving clamping block 6 into the clamping positioning groove 12 of the bottom load-bearing table 1. Fix the hydraulic rod of the clamping hydraulic cylinder 9 to the moving clamping block 6. Insert the bending drive motor 13 into the clamping positioning groove 12 of the bottom load-bearing table 1 and fix it. Connect the transmission shaft of the bending drive motor 13 to the bending block 8. Set the load-bearing block connection groove 17 of the bending claw load-bearing block 16 outside the load-bearing block connection column 15 of the bending block 8. Insert the bending drive claw 19 into the drive claw connection block 18 of the bending claw load-bearing block 16. Fix the top of the drive claw connection block 18 to the drive claw lifting hydraulic cylinder 20. Fix the hydraulic rod of the drive claw lifting hydraulic cylinder 20 to the bending drive claw 19. This device is installed.

[0030] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present utility model, several improvements and modifications can still be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A steel bar bending testing machine, characterized in that The invention comprises a bottom bearing platform (1), a steel bar to be tested (5), a dynamic clamping block (6), a bending block (8), a clamping hydraulic cylinder (9), a bending drive motor (13), a bending claw bearing block (16), a bending drive claw (19), and a drive claw lifting hydraulic cylinder (20), wherein the surface of the bottom bearing platform (1) is provided with a control panel (2), a fixed clamping block (3), and a clamping positioning groove (12), wherein the control panel (2) is located at a corner of the bottom bearing platform (1), the fixed clamping block (3) is located at a transversely centered position of the bottom bearing platform (1), the clamping positioning groove (12) is located on a side of the fixed clamping block (3), and the side of the fixed clamping block (3) is provided with a clamping The movable clamping block (6) has a clamping positioning block (11) at the bottom, the clamping positioning block (11) is adapted to the clamping positioning groove (12), the clamping positioning block (11) is connected to the clamping positioning groove (12), the clamping positioning block (11) slides inside the clamping positioning groove (12), the top of the bottom bearing platform (1) is fixedly connected to the clamping hydraulic cylinder (9), the hydraulic rod of the clamping hydraulic cylinder (9) is fixedly connected to the movable clamping block (6), the top of the movable clamping block (6) has a protective grille (7), the top of the fixed clamping block (3) has a protective grille connecting groove (4), and the protective grille connecting groove (4) is adapted to the protective grille (7).

2. A steel bar bending testing machine according to claim 1, characterized in that The protective grille connection groove (4) is connected to the protective grille (7), the protective grille (7) slides inside the protective grille connection groove (4), the steel bar (5) to be tested is placed on the upper part of the bottom bearing platform (1), the fixed clamping block (3) and the dynamic clamping block (6) are respectively pressed on both sides of the steel bar (5) to be tested, the bending drive motor (13) is inserted into the clamping positioning groove (12) and fixed, the transmission shaft of the bending drive motor (13) is fixedly connected to the bending block (8), the arc surface at the bottom of the bending block (8) is tangent to the plane of the fixed clamping block (3) close to the dynamic clamping block (6), the top of the bending block (8) is provided with a bending protective platform (14), the top of the bending protective platform (14) is provided with a bearing block connecting column (15), the middle of the bending claw bearing block (16) is provided with a bearing block connecting groove (17), and the bearing block connecting groove (17) is adapted to the bearing block connecting column (15).

3. A steel bar bending testing machine according to claim 2, characterized in that The bearing block connection groove (17) is connected to the bearing block connection column (15), the bearing block connection groove (17) rotates outside the bearing block connection column (15), and driving claw connection blocks (18) are provided on both sides of the bending claw bearing block (16), the driving claw connection blocks (18) are adapted to the bending driving claw (19), the driving claw connection blocks (18) are connected to the bending driving claw (19), and the bending driving claw (19) slides inside the driving claw connection blocks (18).

4. A steel bar bending testing machine according to claim 3, characterized in that The top of the driving claw connection block (18) is fixedly connected to the driving claw lifting hydraulic cylinder (20), the hydraulic rod of the driving claw lifting hydraulic cylinder (20) is fixedly connected to the bending driving claw (19), the bending block (8) is pressed against one side of the steel bar (5) to be tested, and the bending driving claw (19) is pressed against the other side of the steel bar (5) to be tested.

Images