Device and method for testing strength of bearing steel bar

Abstract

The invention relates to the technical field of steel bar strength testing, and discloses a bearing steel bar strength testing device and method.The bearing steel bar strength testing device comprises a control console, a second telescopic air cylinder is fixedly installed on the inner wall of the control console, and a reset plate is fixedly installed at the movable end of the second telescopic air cylinder; and a fixed seat is fixedly mounted on the upper surface of the console. According to the bearing steel bar strength testing device and testing method, a bearing steel bar is placed in a clamping seat, a rotary knob is adjusted to enable a threaded rod to drive a clamping plate to fix the surface of the bearing steel bar, the surface of a movable block drives a fixed plate with friction lines to better fix the bearing steel bar, and meanwhile, during testing, the bearing steel bar is fixed by the clamping plate; the bearing steel bar can be buffered by the movable block under the action of the extension spring, when the bearing steel bar is broken, the impact force of resetting of the bearing steel bar is weakened under the condition that the extension spring is reset by the movable block, and corresponding assemblies on the fixed seat are protected.

Description

Technical Field

[0001] The invention relates to the technical field of steel bar strength testing, and in particular to a bearing steel bar strength testing device and a testing method. Background Art

[0002] After the production and manufacturing of bearing steel bars is completed, the quality of the steel bars needs to be tested; the main test items include appearance test, tensile test, bending test, stress relaxation performance test, fatigue test and impact test; among them, the bending test requires the sampled steel bar sample to be installed in the test device, and the free end of the sample is bent 90° as the first bend, and then the bent steel bar sample is turned over so that the protruding part of the steel bar sample is facing upward, and it is bent downward again, and the bending is repeated many times. The test is carried out to the number of bending times specified in the relevant product standards, and the surface of the sample is checked to determine whether its repeated bending performance meets the requirements.

[0003] According to a publicly disclosed steel bar strength testing device (Announcement No.: CN116973254A), in the above application, the driving unit drives the turntable to rotate 180 degrees, so that the bending part of the steel bar sample rotates vertically upward, and then the bending unit continues to press the steel bar sample downward; thereby realizing the automatic rotation of the steel bar sample, thereby reducing the operating difficulty of the staff and improving the efficiency of the detection.

[0004] However, during actual use of the above-mentioned equipment, the bearing steel bars are subjected to bending tests. It is inevitable that the steel bars will break during the bending test. The broken test bearing steel bars will be reset due to sudden uneven force, resulting in rapid reset of the components on the mounting seat, causing damage to the corresponding components. In view of this, we propose a bearing steel bar strength testing device and testing method. Summary of the invention

[0005] The object of the present invention is to provide a bearing steel bar strength testing device and a testing method to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bearing steel bar strength testing device and a testing method, comprising a control console, a telescopic cylinder 2 is fixedly installed on the inner wall of the control console, a reset plate is fixedly installed on the movable end of the telescopic cylinder 2, a fixed seat is fixedly installed on the upper surface of the control console, a support frame is fixedly installed on the upper surface of the control console, a telescopic cylinder 1 is fixedly installed on the upper surface of the support frame, a press brake is fixedly installed on the movable end of the telescopic cylinder 1, a movable seat is movably installed on the upper surface of the fixed seat, a motor is fixedly installed on the side wall of the movable seat, an output end of the motor is fixedly connected to a clamping seat, a protective mechanism is arranged above the fixed seat, a promotion mechanism is arranged above the fixed seat, and the protective mechanism comprises:

[0007] A fixed block, the fixed block is fixedly mounted on the lower surface of the movable seat, the side wall of the fixed block is fixedly connected to a buffer spring, the upper surface of the fixed seat is provided with a buffer groove, the side wall of the fixed seat is provided with a guide groove, the side wall of the fixed seat is provided with a protective groove, and the side wall of the movable seat is fixedly installed with a guide rod;

[0008] A protection hole is provided on the side wall of the movable seat, the inner wall of the protection hole is fixedly connected to a reset spring, and one end of the reset spring away from the inner wall of the protection hole is fixedly connected to a protection ball.

[0009] Preferably, the promotion mechanism includes a knob, which is movably mounted on the side wall of the clamping seat, the inner wall of the knob is threadedly connected to a threaded rod, the end of the threaded rod is movably connected to a splint, the side wall of the splint is fixedly connected to an elastic telescopic rod, a protective groove is provided on the surface of the splint, the inner wall of the protective groove is fixedly connected to a tension spring, and the end of the tension spring away from the inner wall of the protective groove is fixedly connected to a movable block.

[0010] Preferably, a protective mechanism is provided above the movable seat, and the protective mechanism includes a mounting groove, the mounting groove is opened on the side wall of the movable seat, the inner wall of the mounting groove is fixedly connected to a straight rod, the arc surface of the straight rod is fixedly connected to a torsion spring, one end of the torsion spring away from the arc surface of the straight rod is fixedly connected to a movable plate, a lead screw is movably installed on the inner wall of the movable plate, a guide block is movably installed on the arc surface of the lead screw, and the end of the lead screw is fixedly connected to a controller.

[0011] Preferably, the diameter of the protection hole is matched with the diameter of the protection ball, and there are two protection holes. Protection holes are provided on both sides of the movable seat, and the protection holes contact with the protection ball to slow down the moving speed of the movable seat.

[0012] Preferably, the shape of the buffer groove is adapted to the shape of the fixed block, and the end of the buffer spring away from the fixed block is fixedly connected to the inner wall of the buffer groove. There are several buffer springs, and the buffer springs are fixedly installed on the side wall of the fixed block in a linear array. The deformation of the buffer spring ensures the resetting of the fixed block.

[0013] Preferably, the clamping plate is V-shaped, and protective grooves are provided on both sides of the inside of the clamping plate. The clamping seat is composed of a circular plate and two support plates, and the surfaces of the two support plates are provided with clamping plates.

[0014] Preferably, a mounting hole is provided on the surface of the movable plate, the diameter of the mounting hole is adapted to the diameter of the straight rod, the movable plate is sleeved on the surface of the straight rod, and there are two groups of movable plates, which are mirror-imaged at the upper and lower ends of the movable seat.

[0015] Preferably, there are two guide blocks, which are threadedly connected to the arc surface of the screw rod in a mirror-image distribution. During rotation, the controller rotates the screw rod to replace the two guide blocks, so as to adjust and clamp steel rods of different thicknesses.

[0016] Preferably, there are several tension springs, which are fixedly installed on the side wall of the movable block in a linear array, tension springs are arranged on both end side walls of the movable block, and a fixed plate driving the friction pattern is arranged on the surface of the movable block.

[0017] A test method for testing the strength of a bearing steel bar, based on the above-mentioned bearing steel bar strength test device, the test method comprises the following steps:

[0018] S1. Place the bearing steel rod at the center of the clamping plate, and rotate the threaded rod by turning the knob, so that the clamping plate clamps the bearing steel rod;

[0019] S2. Start the telescopic cylinder to slowly squeeze the bearing steel rod with the press brake to test its bending strength;

[0020] S3, start the second telescopic cylinder to squeeze the bent bearing steel rod with the reset plate, and at the same time cooperate with the first telescopic cylinder to drive the bending device to squeeze, so that the bearing steel rod is reset and straightened;

[0021] S4. Start the motor to drive the clamping seat to rotate, drive the middle bearing steel rod to rotate, and rotate in multiple directions to perform multiple tests.

[0022] Compared with the prior art, the present invention provides a bearing steel bar strength testing device and testing method, which have the following beneficial effects:

[0023] 1. The bearing steel bar strength testing device and testing method are as follows: the bearing steel bar is placed inside the clamping seat, and the knob is adjusted to make the threaded rod drive the clamping plate to fix the surface of the bearing steel bar. The surface of the movable block drives the fixed plate with friction patterns to better fix the bearing steel bar. At the same time, during the test, the movable block can buffer the bearing steel bar under the action of the tension spring. When the bearing steel bar breaks, the movable block can also weaken the impact force of the bearing steel bar reset under the condition of the tension spring reset, thereby protecting the corresponding components on the fixed seat.

[0024] 2. The bearing steel bar strength testing device and testing method are provided with movable plates. The two movable plates fit the upper and lower ends of the bearing steel bar under the action of the straight rod and the torsion spring, so that the bearing steel bar can be bent along the direction of the guide block during testing to prevent the end of the bearing steel bar from rotating. Secondly, the controller is adjusted to rotate the screw rod to drive the two guide blocks to move, so as to guide steel bars of different thicknesses. At the same time, when the bearing steel bar breaks, the bearing steel bar has an upward force when the pressure bender provides a downward force. The torsion spring is deformed to cause the movable plate to rotate on the surface of the straight rod to limit the broken bearing steel bar, so as to prevent the bearing steel bar from tilting and affecting the components on the fixed seat.

[0025] 3. The bearing steel bar strength testing device and testing method, by setting a moving seat, when the bearing steel bar is tested, the moving seat stably moves following the bending degree of the bearing steel bar under the action of a fixed block and a buffer spring. When the bearing steel bar breaks, the buffer spring drives the moving seat to reset, and the guide rod guides the reset of the moving seat inside the guide groove. The protection ball continuously contacts the protection groove under the action of the reset spring to slow down the moving seat. The obstruction hole set inside the protection groove is adapted to the protection ball to slow down the impact force of the reset of the moving seat, thereby further protecting the components on the moving seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the partial explosion structure of the fixing seat of the present invention;

[0028] Figure 3 It is a schematic diagram of the local structure of the fixing seat of the present invention;

[0029] Figure 4 It is a partial explosion schematic diagram of the movable seat part of the structure of the present invention;

[0030] Figure 5 It is a schematic diagram of the local structure of the clamping seat of the present invention;

[0031] Figure 6 This is a schematic diagram of the partial explosion structure of the splint of the present invention;

[0032] Figure 7 This is a schematic diagram of the partial explosion structure of the movable plate of the present invention;

[0033] Figure 8 It is a schematic diagram of the partial explosion structure of the reset plate of the present invention.

[0034] In the figure: 1. control console; 2. reset plate; 3. protection mechanism; 301. fixed block; 302. buffer spring; 303. buffer groove; 304. guide groove; 305. protection groove; 306. guide rod; 307. protection hole; 308. reset spring; 309. protection ball; 4. promotion mechanism; 401. threaded rod; 402. knob; 403. elastic telescopic rod; 404. clamping plate; 405. protection groove; 406. tension spring; 407. movable block; 5. protection mechanism; 501. mounting groove; 502. straight rod; 503. torsion spring; 504. movable plate; 505. screw rod; 506. controller; 507. guide block; 6. support frame; 7. telescopic cylinder one; 8. bending device; 9. fixed seat; 10. movable seat; 11. motor; 12. clamping seat; 13. telescopic cylinder two. DETAILED DESCRIPTION

[0035] like Figure 1-Figure 8 As shown, the present invention provides a technical solution: a bearing steel bar strength testing device and testing method, comprising a control console 1, a telescopic cylinder 2 13 is fixedly installed on the inner wall of the control console 1, a reset plate 2 is fixedly installed on the movable end of the telescopic cylinder 2 13, a fixed seat 9 is fixedly installed on the upper surface of the control console 1, a support frame 6 is fixedly installed on the upper surface of the control console 1, a telescopic cylinder 7 is fixedly installed on the upper surface of the support frame 6, a bending device 8 is fixedly installed on the movable end of the telescopic cylinder 7, a movable seat 10 is movably installed on the upper surface of the fixed seat 9, a motor 11 is fixedly installed on the side wall of the movable seat 10, an output end of the motor 11 is fixedly connected to a clamping seat 12, a protection mechanism 3 is arranged above the fixed seat 9, a promotion mechanism 4 is arranged above the fixed seat 9, the protection mechanism 3 comprises a fixed block 301, a buffer spring 302, a buffer groove 303, a guide groove 304, a protection groove 305, a guide rod 306, a protection hole 307, a reset spring 308, and a protection ball 309.

[0036] In one embodiment of the present invention, a fixed block 301 is fixedly installed on the lower surface of the movable seat 10, a buffer spring 302 is fixedly connected to the side wall of the fixed block 301, a buffer groove 303 is opened on the upper surface of the fixed seat 9, a guide groove 304 is opened on the side wall of the fixed seat 9, a protective groove 305 is opened on the side wall of the fixed seat 9, a guide rod 306 is fixedly installed on the side wall of the movable seat 10, a protective hole 307 is opened on the side wall of the movable seat 10, a reset spring 308 is fixedly connected to the inner wall of the protective hole 307, and a protective ball 309 is fixedly connected to the end of the reset spring 308 away from the inner wall of the protective hole 307.

[0037] In addition, the promotion mechanism 4 includes a knob 402, which is movably mounted on the side wall of the clamping seat 12, the inner wall of the knob 402 is threadedly connected to the threaded rod 401, the end of the threaded rod 401 is movably connected to the clamping plate 404, the side wall of the clamping plate 404 is fixedly connected to the elastic telescopic rod 403, the surface of the clamping plate 404 is provided with a protective groove 405, the inner wall of the protective groove 405 is fixedly connected to the tension spring 406, and the end of the tension spring 406 away from the inner wall of the protective groove 405 is fixedly connected to the movable block 407, and the movable seat A protective mechanism 5 is arranged above 10, and the protective mechanism 5 includes a mounting groove 501, and the mounting groove 501 is opened on the side wall of the movable seat 10, the inner wall of the mounting groove 501 is fixedly connected to the straight rod 502, the arc surface of the straight rod 502 is fixedly connected to the torsion spring 503, and the end of the torsion spring 503 away from the arc surface of the straight rod 502 is fixedly connected to the movable plate 504, the inner wall of the movable plate 504 is movably installed with a lead screw 505, the arc surface of the lead screw 505 is movably installed with a guide block 507, and the end of the lead screw 505 is fixedly connected to the controller 506.

[0038] In an embodiment of the present invention, the diameter of the protection hole 307 is adapted to the diameter of the protection ball 309, the number of the protection holes 307 is set to two, the protection holes 307 are opened on both sides of the movable seat 10, the shape of the buffer groove 303 is adapted to the shape of the fixed block 301, the end of the buffer spring 302 away from the fixed block 301 is fixedly connected to the inner wall of the buffer groove 303, the number of the buffer springs 302 is set to several, and the several buffer springs 302 are fixedly installed on the side wall of the fixed block 301 in a linear array, the clamping plate 404 is V-shaped, and the protective grooves 405 are opened on both sides of the inside of the clamping plate 404, the clamping seat 12 is composed of a circular plate and two supporting plates, the surfaces of the two supporting plates are provided with clamping plates 404, the surface of the movable plate 504 is opened with a mounting hole, the diameter of the mounting hole is adapted to the diameter of the straight rod 502, the movable plate 504 is sleeved on the surface of the straight rod 502, the number of the movable plates 504 is set to two groups, and the two groups of movable plates 504 are mirror-imaged at the upper and lower ends of the movable seat 10.

[0039] Furthermore, the number of guide blocks 507 is set to two, and the two guide blocks 507 are mirror-distributed and movably mounted on the arc surface of the screw rod 505. The number of tension springs 406 is set to a plurality, and the plurality of tension springs 406 are fixedly mounted on the side wall of the movable block 407 in a linear array. The side walls at both ends of the movable block 407 are provided with tension springs 406, and the surface of the movable block 407 is provided with a fixed plate that drives the friction pattern.

[0040] In the present invention, when in use, the bearing steel bar is placed inside the clamping seat 12, and the knob 402 is adjusted to make the threaded rod 401 drive the clamping plate 404 to fix the surface of the bearing steel bar, and the surface of the movable block 407 drives the fixed plate with friction patterns to better fix the bearing steel bar. At the same time, when the test is carried out, the movable block 407 can buffer the bearing steel bar under the action of the tension spring 406. When the bearing steel bar breaks, the movable block 407 also weakens the impact force of the bearing steel bar reset under the condition of the tension spring 406 reset, thereby protecting the fixed seat 9. The corresponding components of the two movable plates 504 are fitted with the upper and lower ends of the bearing steel bar under the action of the straight rod 502 and the torsion spring 503, so that the bearing steel bar can be bent along the direction of the guide block 507 when being tested, thereby preventing the end of the bearing steel bar from rotating. At the same time, when the bearing steel bar is broken, the bearing steel bar has an upward force when the pressure bender 8 provides a downward force. The torsion spring 503 is deformed to make the movable plate 504 rotate on the surface of the straight rod 502 to limit the broken bearing steel bar, thereby preventing the bearing steel bar from tilting and affecting the components on the fixed seat 9.

[0041] Furthermore, when the bearing steel bar is tested, the movable seat 10 stably moves following the bending degree of the bearing steel bar under the action of the fixed block 301 and the buffer spring 302. When the bearing steel bar breaks, the buffer spring 302 drives the movable seat 10 to reset. The guide rod 306 guides the reset of the movable seat 10 inside the guide groove 304. The protection ball 309 continuously contacts the protection groove 305 under the action of the reset spring 308 to slow down the movable seat 10. The obstruction hole set inside the protection groove 305 is adapted to the protection ball 309 to slow down the impact force of the reset of the movable seat 10, thereby further protecting the movable seat 10. The components on the bearing steel rod are placed at the center of the clamp 404, and the threaded rod 401 is rotated by turning the knob 402, so that the clamp 404 clamps the bearing steel rod, and the telescopic cylinder 17 is started to slowly squeeze the bending device 8 to test its bending strength, and the telescopic cylinder 13 is started to squeeze the reset plate 2 against the bent bearing steel rod, and at the same time, the telescopic cylinder 17 drives the bending device 8 to squeeze, so that the bearing steel rod is reset and straightened, and the motor 11 is started to drive the clamping seat 12 to rotate, and the middle bearing steel rod is driven to rotate, and multiple directions are rotated for multiple tests.

[0042] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made based on the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A bearing steel bar strength testing device, comprising a control console (1), a second telescopic cylinder (13) is fixedly mounted on the inner wall of the control console (1), a reset plate (2) is fixedly mounted on the movable end of the second telescopic cylinder (13), a fixed seat (9) is fixedly mounted on the upper surface of the control console (1), a support frame (6) is fixedly mounted on the upper surface of the control console (1), a first telescopic cylinder (7) is fixedly mounted on the upper surface of the support frame (6), a bending device (8) is fixedly mounted on the movable end of the first telescopic cylinder (7), a movable seat (10) is movably mounted on the upper surface of the fixed seat (9), a motor (11) is fixedly mounted on the side wall of the movable seat (10), and an output end of the motor (11) is fixedly connected to a clamping seat (12), characterized in that: A protection mechanism (3) is arranged above the fixing seat (9), and a promotion mechanism (4) is arranged above the fixing seat (9). The protection mechanism (3) comprises: A fixed block (301), the fixed block (301) is fixedly mounted on the lower surface of the movable seat (10), the side wall of the fixed block (301) is fixedly connected to a buffer spring (302), the upper surface of the fixed seat (9) is provided with a buffer groove (303), the side wall of the fixed seat (9) is provided with a guide groove (304), the side wall of the fixed seat (9) is provided with a protective groove (305), and the side wall of the movable seat (10) is fixedly mounted with a guide rod (306); A protection hole (307) is provided on the side wall of the movable seat (10); the inner wall of the protection hole (307) is fixedly connected to a reset spring (308); and one end of the reset spring (308) away from the inner wall of the protection hole (307) is fixedly connected to a protection ball (309).

2. A bearing steel bar strength testing device according to claim 1, characterized in that: The promotion mechanism (4) comprises a knob (402), wherein the knob (402) is movably mounted on the side wall of the clamping seat (12), the inner wall of the knob (402) is threadedly connected to the threaded rod (401), the end of the threaded rod (401) is movably connected to the clamping plate (404), the side wall of the clamping plate (404) is fixedly connected to the elastic telescopic rod (403), a protective groove (405) is provided on the surface of the clamping plate (404), the inner wall of the protective groove (405) is fixedly connected to the tension spring (406), and one end of the tension spring (406) away from the inner wall of the protective groove (405) is fixedly connected to the movable block (407).

3. A bearing steel bar strength testing device according to claim 1, characterized in that: A protection mechanism (5) is arranged above the movable seat (10), and the protection mechanism (5) comprises a mounting groove (501), wherein the mounting groove (501) is provided on the side wall of the movable seat (10), the inner wall of the mounting groove (501) is fixedly connected to a straight rod (502), the arc surface of the straight rod (502) is fixedly connected to a torsion spring (503), one end of the torsion spring (503) away from the arc surface of the straight rod (502) is fixedly connected to a movable plate (504), a lead screw (505) is movably mounted on the inner wall of the movable plate (504), a guide block (507) is movably mounted on the arc surface of the lead screw (505), and the end of the lead screw (505) is fixedly connected to a controller (506).

4. A bearing steel bar strength testing device according to claim 1, characterized in that: The diameter of the protection hole (307) is matched with the diameter of the protection ball (309), and there are two protection holes (307). Protection holes (307) are provided on both sides of the movable seat (10).

5. The bearing steel bar strength testing device according to claim 1, characterized in that: The shape of the buffer groove (303) is adapted to the shape of the fixed block (301); one end of the buffer spring (302) away from the fixed block (301) is fixedly connected to the inner wall of the buffer groove (303); a plurality of buffer springs (302) are provided, and the plurality of buffer springs (302) are fixedly installed on the side wall of the fixed block (301) in a linear array.

6. A bearing steel bar strength testing device according to claim 2, characterized in that: The clamping plate (404) is V-shaped, and protective grooves (405) are provided on both sides of the inside of the clamping plate (404). The clamping seat (12) is composed of a circular plate and two supporting plates, and the surfaces of the two supporting plates are provided with the clamping plates (404).

7. A bearing steel bar strength testing device according to claim 3, characterized in that: The surface of the movable plate (504) is provided with a mounting hole, the diameter of the mounting hole is matched with the diameter of the straight rod (502), the movable plate (504) is sleeved on the surface of the straight rod (502), the movable plates (504) are provided in two groups, and the two groups of movable plates (504) are arranged in a mirror-image manner at the upper and lower ends of the movable seat (10).

8. The bearing steel bar strength testing device according to claim 3, characterized in that: The number of the guide blocks (507) is two, and the two guide blocks (507) are movably mounted on the arc surface of the screw rod (505) in a mirror-image distribution.

9. A bearing steel bar strength testing device according to claim 2, characterized in that: The number of the tension springs (406) is set to be several, and the several tension springs (406) are fixedly installed on the side wall of the movable block (407) in a linear array. The side walls at both ends of the movable block (407) are each provided with a tension spring (406), and a fixed plate that drives the friction pattern is provided on the surface of the movable block (407).

10. A method for testing the strength of a bearing steel bar, characterized in that: Based on the bearing steel bar strength testing device described in claims 1-9, the testing method comprises the following steps: S1, placing the bearing steel rod at the center of the clamping plate (404), rotating the knob (402) to rotate the threaded rod (401), thereby causing the clamping plate (404) to clamp the bearing steel rod; S2, start the telescopic cylinder 1 (7) to slowly squeeze the bearing steel rod with the press bender (8) to test its bending strength; S3, start the telescopic cylinder 2 (13), and use the reset plate (2) to squeeze the bent bearing steel rod, and at the same time cooperate with the telescopic cylinder 1 (7) to drive the bending device (8) to squeeze, so that the bearing steel rod is reset and straightened; S4, starting the motor (11), driving the clamping seat (12) to rotate, driving the middle bearing steel rod to rotate, and rotating in multiple directions to perform multiple tests.

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