Screw strength testing device

Abstract

The utility model discloses a screw strength testing device, which is applied to the field of screw production, and is characterized in that a clamping rod is separated from a fixed hole by moving a pull block, a fixed seat is rotated, a threaded hole with a required size is rotated to the top, and then the pull block is loosened to enable the clamping rod to be clamped with the fixed hole under the action of a first spring; according to the utility model, by moving the sliding cylinder and moving the sliding cylinder to separate the sliding cylinder from the fixing groove, the two ends of the fixing seat are exposed, and then the fixing seat is taken down, so that the screws of different sizes can be conveniently tested, the replacement of the fixing seat is not needed, the workload is reduced, and the testing efficiency is improved. Two needed fixing seats are placed in the fixing grooves, the sliding barrels are loosened, the sliding barrels are reset under the action of the second springs, and the fixing grooves are shielded, so that the purpose of conveniently replacing the fixing seats can be achieved, the workload is reduced, and the replacement efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of screw manufacturing, and in particular to a screw strength testing device. Background Technology

[0002] A search of Chinese patents revealed publication number CN212658535U, which discloses a screw strength testing device for screw production. This device solves the problem of complex operating procedures in existing screw tensile strength testing devices. The device includes a base cylinder with two support columns fixedly connected to the top. Gears are installed on the inner side of the support columns, and these gears are rotatably connected to the support columns via support rods. The gears are fixedly connected to the support rods at their center. The support rods and support columns are slidably connected through corresponding grooves on the outer wall of the support rods and support columns. A threaded rod is rotatably connected to the bottom of one end of the support column at the top of the base. A sleeve with corresponding internal threads is provided on the outer wall of the threaded rod, and the sleeve is screwed onto the threaded rod. This invention allows for simple operation to test the tensile strength of screws.

[0003] Existing testing devices are not suitable for testing screws of different sizes. Generally, when testing screws, the screw is fixed in a threaded hole on a mounting base. However, the threaded hole on the mounting base is of a fixed size, which can only test screws of that size. If it is necessary to test screws of different sizes, the mounting base needs to be replaced, which is very troublesome, increases workload, reduces work efficiency, and is also inconvenient to replace. The mounting base is generally fixed by bolts, and when replacing it, tools are needed for disassembly and assembly, which is also troublesome, increases workload, and reduces replacement efficiency. In order to solve the above problems, we propose a screw strength testing device. Utility Model Content

[0004] The purpose of this invention is to provide a screw strength testing device, which has the advantages of being easy to test screws of different sizes and easy to replace the fixing base.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a screw strength testing device, including a base, a support plate bolted to the top of the base, a rotating shaft rotatably sleeved on the inner wall of the support plate, a fixed seat provided between the rotating shafts, a threaded hole on the surface of the fixed seat, a fixed block bolted to the surface of the support plate, and the fixed block rotatably sleeved with the surface of the rotating shaft, a snap-fit ​​rod slidably sleeved on the inner wall of the fixed block, a limit plate fixedly sleeved on the surface of the snap-fit ​​rod, a first spring fixedly connected between the limit plate and the inner wall of the fixed block by a spring fixing member, a fixed hole provided on the surface of the rotating shaft, the fixed hole corresponding to the threaded hole, and the fixed hole snapping with the snap-fit ​​rod, a lifting mechanism provided at the top of the base, and a clamping mechanism provided at the bottom of the lifting mechanism.

[0006] By adopting the above technical solution, the locking rod is disengaged from the fixing hole by moving the pull block, the fixing seat is rotated to rotate the threaded hole of the required size to the top, and then the pull block is released to make the locking rod engage with the fixing hole under the action of the first spring. This method of fixing the rod can facilitate the testing of screws of different sizes without the need to replace the fixing seat, thus reducing workload and improving testing efficiency.

[0007] The present invention is further configured such that: a fixing groove is provided on the surface of the rotating shaft, and both ends of the fixing seat are located inside the fixing groove; a limiting ring is fixedly sleeved on the surface of the rotating shaft; and a second spring is fixedly connected between the limiting ring and the slide cylinder by a spring fixing member.

[0008] By adopting the above technical solution, the sliding cylinder is moved to disengage from the fixing groove, exposing both ends of the fixing seat. Then, the fixing seat is removed, and the two required fixing seats are placed into the fixing groove. The sliding cylinder is then released, and it returns to its original position under the action of the second spring, thus covering the fixing groove. This method facilitates the replacement of the fixing seat, reduces workload, and improves replacement efficiency.

[0009] The present invention is further configured such that: the lifting mechanism includes a fixed column, the bottom of the fixed column is bolted to the top of the base, a first motor is bolted to the top of the fixed column, the output end of the first motor extends into the interior of the fixed column and is connected to a screw via a coupling, and the bottom of the screw is rotatably connected to the inner wall of the fixed column, a sliding block is threaded onto the surface of the screw, and the sliding block is slidably connected to the inner wall of the fixed column, a lifting rod is bolted to the surface of the sliding block, and a tension sensor is bolted to the bottom of the lifting rod.

[0010] By adopting the above technical solution and setting up a lifting mechanism, it is convenient to conduct tensile strength tests on the screws.

[0011] The present invention is further configured such that: the clamping mechanism includes a fixed plate, the top of the fixed plate is bolted to the bottom of the tension sensor, a second motor is bolted to the surface of the fixed plate, the output end of the second motor extends into the interior of the fixed plate and is connected to a bidirectional lead screw via a coupling, and the other end of the bidirectional lead screw is rotatably connected to the inner wall of the fixed plate, a first slider is threaded to the surface of the bidirectional lead screw, a clamping plate is bolted to the bottom of the first slider, and a clamping head is provided on the surface of the clamping plate.

[0012] By adopting the above technical solution, a clamping mechanism is set up to clamp the screw, which facilitates testing.

[0013] The present invention is further configured such that: a groove is provided on the surface of the clamping plate, a second slider is slidably connected to the inner wall of the groove, and the second slider is bolted to the clamping head, and an adjusting bolt is threadedly connected to the inner wall of the second slider.

[0014] By adopting the above technical solution, the spacing between the clamping heads can be easily adjusted by setting a sliding groove, a second slider, and an adjusting bolt, making it suitable for screws of different sizes and improving applicability.

[0015] The present invention is further configured such that the surface of the clamping plate is printed with scale lines.

[0016] By adopting the above technical solution and setting scale lines, the distance between the clamping heads can be easily adjusted.

[0017] The present invention is further provided that the surface of the slide tube is provided with anti-slip texture.

[0018] By adopting the above technical solution, anti-slip texture is set to prevent hand slippage and facilitate operation.

[0019] The present invention is further configured such that a pull block is bolted to the top of the snap-fit ​​rod.

[0020] By adopting the above technical solution, the locking rod can be easily moved by setting a pull block.

[0021] In summary, this utility model has the following beneficial effects:

[0022] 1. This utility model uses a movable pull block to disengage the locking rod from the fixing hole, rotates the fixing base to rotate the threaded hole of the required size to the top, and then releases the pull block to allow the locking rod to engage with the fixing hole under the action of the first spring. This method of fixing the rod facilitates testing of screws of different sizes, eliminates the need to replace the fixing base, reduces workload, and improves testing efficiency.

[0023] 2. This utility model uses a movable slide cylinder to disengage from the fixed groove, exposing both ends of the fixed seat. Then, the fixed seat is removed, and the two seats of the required fixed seat are placed into the fixed groove. The slide cylinder is then released, and it returns to its original position under the action of the second spring, thus covering the fixed groove. This method facilitates the replacement of the fixed seat, reduces workload, and improves replacement efficiency. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural view of the present invention;

[0025] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0026] Figure 3 This is a side sectional view of the structure of this utility model;

[0027] Figure 4 This is a partial structural side sectional view of the present invention;

[0028] Figure 5 This is a partial structural side sectional view of the present invention;

[0029] Figure 6 This is a utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0030] Figure 7 This is a utility model Figure 2 Enlarged view of the structure at point B in the middle.

[0031] Reference numerals: 1. Base; 2. Support plate; 3. Rotating shaft; 4. Fixed seat; 5. Threaded hole; 6. Fixed block; 7. Snap-fit ​​rod; 8. Limiting plate; 9. First spring; 10. Fixed hole; 11. Lifting mechanism; 12. Clamping mechanism; 13. Fixed groove; 14. Limiting ring; 15. Second spring; 16. Fixed column; 17. First motor; 18. Screw; 19. Sliding block; 20. Lifting rod; 21. Tension sensor; 22. Fixed plate; 23. Second motor; 24. Bidirectional lead screw; 25. First slider; 26. Clamping plate; 27. Clamping head; 28. Slide groove; 29. ​​Second slider; 30. Adjusting bolt; 31. Scale line; 32. Anti-slip texture; 33. Pull block; 34. Slide cylinder. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to the accompanying drawings.

[0033] Example 1:

[0034] refer to Figure 1 , Figure 2 , Figure 4 and Figure 6A screw strength testing device includes a base 1, a support plate 2 bolted to the top of the base 1, a rotating shaft 3 rotatably sleeved on the inner wall of the support plate 2, a fixing seat 4 disposed between the rotating shafts 3, a threaded hole 5 on the surface of the fixing seat 4, a fixing block 6 bolted to the surface of the support plate 2, and the fixing block 6 rotatably sleeved with the surface of the rotating shaft 3, a snap-fit ​​rod 7 slidably sleeved on the inner wall of the fixing block 6, a limit plate 8 fixedly sleeved on the surface of the snap-fit ​​rod 7, a first spring 9 fixedly connected between the limit plate 8 and the inner wall of the fixing block 6 by a spring fastener, and a fixing hole 10 on the surface of the rotating shaft 3. Hole 10 corresponds to threaded hole 5, and fixing hole 10 is engaged with locking rod 7. A lifting mechanism 11 is provided on the top of base 1, and a clamping mechanism 12 is provided on the bottom of lifting mechanism 11. By moving pull block 33, locking rod 7 is disengaged from fixing hole 10. Rotate fixing base 4 to rotate threaded hole 5 of the required size to the top, and then release pull block 33 to engage locking rod 7 with fixing hole 10 under the action of first spring 9. This method of fixing can facilitate testing of screws of different sizes without replacing fixing base 4, reducing workload and improving testing efficiency.

[0035] refer to Figure 3 The lifting mechanism 11 includes a fixed column 16, the bottom of which is bolted to the top of the base 1. A first motor 17 is bolted to the top of the fixed column 16. The output end of the first motor 17 extends into the interior of the fixed column 16 and is connected to a screw 18 via a coupling. The bottom of the screw 18 is rotatably connected to the inner wall of the fixed column 16. A sliding block 19 is threaded onto the surface of the screw 18 and is slidably connected to the inner wall of the fixed column 16. A lifting rod 20 is bolted to the surface of the sliding block 19, and a tension sensor 21 is bolted to the bottom of the lifting rod 20. By setting up the lifting mechanism 11, it is convenient to test the tensile strength of the screw.

[0036] refer to Figure 5 The surface of the clamping plate 26 is printed with scale lines 31, which facilitates the adjustment of the spacing between the clamping heads 27.

[0037] refer to Figure 4 A pull block 33 is bolted to the top of the locking rod 7, which facilitates the movement of the locking rod 7.

[0038] Example 2:

[0039] refer to Figure 1 , Figure 2 and Figure 7The rotating shaft 3 has a fixing groove 13 on its surface, and both ends of the fixing seat 4 are located inside the fixing groove 13. A limiting ring 14 is fixedly sleeved on the surface of the rotating shaft 3. A second spring 15 is fixedly connected between the limiting ring 14 and the slide cylinder 34 through a spring fixing member. By moving the slide cylinder 34, the slide cylinder 34 moves and disengages from the fixing groove 13, exposing both ends of the fixing seat 4. Then, the fixing seat 4 is removed, and the two required fixing seats 4 are placed into the fixing groove 13. The slide cylinder 34 is released, and the slide cylinder 34 returns to its original position under the action of the second spring 15. By blocking the fixing groove 13, the purpose of replacing the fixing seat 4 can be achieved, reducing the workload and improving the replacement efficiency.

[0040] refer to Figure 2 The clamping mechanism 12 includes a fixed plate 22. The top of the fixed plate 22 is bolted to the bottom of the tension sensor 21. A second motor 23 is bolted to the surface of the fixed plate 22. The output end of the second motor 23 extends into the interior of the fixed plate 22 and is connected to a bidirectional lead screw 24 via a coupling. The other end of the bidirectional lead screw 24 is rotatably connected to the inner wall of the fixed plate 22. A first slider 25 is threaded to the surface of the bidirectional lead screw 24. A clamping plate 26 is bolted to the bottom of the first slider 25. A clamping head 27 is provided on the surface of the clamping plate 26. By setting the clamping mechanism 12, the screw is clamped for convenient testing.

[0041] refer to Figure 5 The surface of the clamping plate 26 is provided with a sliding groove 28. The inner wall of the sliding groove 28 is slidably connected to a second slider 29, and the second slider 29 is bolted to the clamping head 27. The inner wall of the second slider 29 is threadedly connected to an adjusting bolt 30. By setting the sliding groove 28, the second slider 29 and the adjusting bolt 30, it is easy to adjust the distance between the clamping heads 27, so as to accommodate screws of different sizes and improve applicability.

[0042] refer to Figure 7 The surface of the slide cylinder 34 is provided with anti-slip texture 32. By setting the anti-slip texture 32, the hand slips and the operation is facilitated.

[0043] Brief description of the usage process: Screw the screw into the threaded hole 5 on the fixing seat 4. Then, the first motor 17 drives the screw 18 to rotate, causing the sliding block 19 to move. The movement of the sliding block 19 causes the lifting rod 20 to move, which in turn causes the clamping head 27 to move. Then, the clamping head 27 is moved to the bottom. The second motor 23 rotates, causing the bidirectional lead screw 24 to rotate. The bidirectional lead screw 24 rotates, causing the first slider 25 to move the clamping plate 26, which in turn moves the clamping head 27 to clamp the top of the screw. The first motor 17 rotates in the opposite direction, causing the clamping head 27 to stretch the screw. The tension transmitter transmits the stretching data to the control console until the screw breaks. The control console records and saves the tensile force at the breaking point, thus allowing the maximum tensile strength of the screw to be tested. Move the pull block 33 to disengage the locking rod 7 from the fixing hole 10. Rotate the fixing seat 4 to... Rotate the threaded hole 5 to the top, then release the pull block 33 so that the snap-fit ​​rod 7 engages with the fixing hole 10 under the action of the first spring 9, fixing it in place. This allows for testing of screws of different sizes without disassembling and replacing the fixing seat 4, thus facilitating testing of screws of different sizes. When testing screws of special specifications, it is necessary to replace them with the corresponding fixing seat 4. Move the slide cylinder 34 so that it disengages from the fixing groove 13, exposing both ends of the fixing seat 4. Then remove the fixing seat 4, place the two required fixing seats 4 into the fixing groove 13, release the slide cylinder 34, and the slide cylinder 34 returns to its original position under the action of the second spring 15, covering the fixing groove 13 and fixing both ends of the fixing seat 4 in the fixing groove 13, completing the replacement. This facilitates the replacement of the fixing seat 4.

[0044] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A screw strength testing device, comprising a base (1), characterized in that, A support plate (2) is bolted to the top of the base (1). A rotating shaft (3) is rotatably sleeved on the inner wall of the support plate (2). A fixed seat (4) is provided between the rotating shafts (3). A threaded hole (5) is opened on the surface of the fixed seat (4). A fixing block (6) is bolted to the surface of the support plate (2), and the fixing block (6) is rotatably sleeved with the surface of the rotating shaft (3). A snap-fit ​​rod (7) is slidably sleeved on the inner wall of the fixing block (6). The surface of the snap-fit ​​rod (7) is... A limiting plate (8) is fixedly sleeved on the surface. The limiting plate (8) and the inner wall of the fixing block (6) are fixedly connected by a first spring (9) through a spring fixing member. The surface of the rotating shaft (3) is provided with a fixing hole (10), and the fixing hole (10) corresponds to the threaded hole (5). The fixing hole (10) is engaged with the snap-fit ​​rod (7). The top of the base (1) is provided with a lifting mechanism (11), and the bottom of the lifting mechanism (11) is provided with a clamping mechanism (12).

2. The screw strength testing device according to claim 1, characterized in that, The rotating shaft (3) has a fixing groove (13) on its surface, and both ends of the fixing seat (4) are located inside the fixing groove (13). A limiting ring (14) is fixedly sleeved on the surface of the rotating shaft (3), and a second spring (15) is fixedly connected between the limiting ring (14) and the slide cylinder (34) through a spring fixing member.

3. The screw strength testing device according to claim 1, characterized in that, The lifting mechanism (11) includes a fixed column (16), the bottom of which is bolted to the top of the base (1), and a first motor (17) is bolted to the top of the fixed column (16). The output end of the first motor (17) extends into the interior of the fixed column (16) and is connected to a screw (18) via a coupling. The bottom of the screw (18) is rotatably connected to the inner wall of the fixed column (16). A sliding block (19) is threaded onto the surface of the screw (18), and the sliding block (19) is slidably connected to the inner wall of the fixed column (16). A lifting rod (20) is bolted to the surface of the sliding block (19), and a tension sensor (21) is bolted to the bottom of the lifting rod (20).

4. The screw strength testing device according to claim 3, characterized in that, The clamping mechanism (12) includes a fixed plate (22), the top of which is bolted to the bottom of the tension sensor (21), a second motor (23) is bolted to the surface of the fixed plate (22), the output end of the second motor (23) extends into the interior of the fixed plate (22) and is connected to a bidirectional lead screw (24) via a coupling, and the other end of the bidirectional lead screw (24) is rotatably connected to the inner wall of the fixed plate (22), a first slider (25) is threaded to the surface of the bidirectional lead screw (24), a clamping plate (26) is bolted to the bottom of the first slider (25), and a clamping head (27) is provided on the surface of the clamping plate (26).

5. The screw strength testing device according to claim 4, characterized in that, The surface of the clamping plate (26) is provided with a sliding groove (28), and a second slider (29) is slidably connected to the inner wall of the sliding groove (28). The second slider (29) is bolted to the clamping head (27), and an adjusting bolt (30) is threadedly connected to the inner wall of the second slider (29).

6. The screw strength testing device according to claim 4, characterized in that, The surface of the clamping plate (26) is printed with scale lines (31).

7. The screw strength testing device according to claim 2, characterized in that, The surface of the slide (34) is provided with anti-slip texture (32).

8. The screw strength testing device according to claim 1, characterized in that, A pull block (33) is bolted to the top of the snap-fit ​​rod (7).

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