Fastener thread friction coefficient testing machine

Abstract

The utility model discloses a fastener thread friction coefficient testing machine which comprises a base, four corners of the bottom of the base are symmetrically and fixedly connected with supporting legs, the top of the base is provided with an experiment box, one end of the experiment box is provided with a detector, and the bottom, far away from the detector, of the experiment box is fixedly provided with a sliding seat. A sliding box is transversely and slidably arranged at the top of the sliding base, and a rotary table is rotationally connected to the top of the sliding box and driven by a driving mechanism to rotate. Through the arrangement of the two groups of bolt mounting tables and the rotary table, the rotary table can be driven by the driving mechanism to rotate, the positions of the two groups of bolt mounting tables can be exchanged, when the bolt mounting table close to the detector works, bolts on the other group of bolt mounting table can be replaced, and then the bolts on the other group of bolt mounting table can be replaced through the two groups of bolt mounting tables which work alternately. Therefore, the detector can work continuously, and the experiment efficiency of the fastener thread friction coefficient is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of thread friction coefficient testing technology, specifically a fastener thread friction coefficient testing machine. Background Technology

[0002] Fasteners, also known as standard parts in the market, are mechanical components that can mechanically fix or bond two or more parts together. They are characterized by a wide variety of types and specifications, diverse performance and applications, and a high degree of standardization, serialization, and generalization. Fasteners are the most widely used basic mechanical components, with a large demand. During the fastener production process, a fastener thread friction coefficient testing machine is needed to test the performance of the fasteners.

[0003] Current fastener thread friction coefficient testing machines, such as the one proposed in publication number CN221883416U, include a fixed table, a metal plate, and a gasket. The metal plate has several mounting holes and is fixedly connected to the fixed table by screws passing through these holes. A clamping plate is fixedly connected to the side of the metal plate away from the fixed table, forming a cavity between the clamping plate and the metal plate for placing the gasket. The gasket is located within the cavity. A first through hole is provided on the metal plate for placing the bolt to be tested. A placement groove is provided on the side of the metal plate away from the worktable for partially embedding the gasket. The placement groove and the first through hole are interconnected. An adjusting bolt is threaded onto the clamping plate, passing through the clamping plate. The end of the adjusting bolt near the metal plate abuts against the gasket. This application has the advantage that when replacing the metal plate, there is no need to repeatedly disassemble and install the gasket fixing fixture used to fix the gasket.

[0004] While existing thread friction coefficient testing machines offer the advantage of eliminating the need for repeated disassembly and reassembly of the gasket fixing fixture when changing metal plates, it has been found that after bolt testing, the bolts need to be replaced. During bolt replacement, the equipment stops working, resulting in low bolt testing efficiency and making continuous operation inconvenient. Therefore, we propose a fastener thread friction coefficient testing machine to solve the aforementioned problems. Utility Model Content

[0005] The purpose of this invention is to provide a fastener thread friction coefficient testing machine to solve the problems currently found in the market as described in the background.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fastener thread friction coefficient testing machine, comprising a base, with support legs symmetrically fixedly connected to the four corners of the base's bottom, and a test chamber mounted on the top of the base, wherein...

[0007] A detector is installed at one end of the experimental box, and a sliding seat is fixedly installed at the bottom of the experimental box away from the detector. A sliding box is slidably arranged on the top of the sliding seat, and a turntable is rotatably connected to the top of the sliding box.

[0008] The turntable is driven to rotate by a drive mechanism. Bolt mounting platforms are symmetrically fixed to the top of both sides of the turntable. A gasket groove is opened on the side of the bolt mounting platform away from the center of the turntable. A gasket is placed in the gasket groove. The shaft end of the detector located in the experimental box is fitted with an adapter.

[0009] Preferably, a first motor is installed on the outside of the sliding seat corresponding to the experimental box, a sliding groove is opened on the top of the sliding seat, a slider is fixedly connected to the bottom of the sliding groove corresponding to the sliding box, a lead screw is rotatably connected in the sliding groove, and the end of the lead screw is fixedly connected to the shaft end of the first motor.

[0010] Preferably, both the groove and the slider are T-shaped, and the slider and the lead screw are connected by a thread.

[0011] Preferably, the drive mechanism includes a rotating shaft, the turntable is rotatably connected to the sliding box via the rotating shaft, a second motor is installed inside one side of the sliding box, a first reversing gear is installed on the shaft end of the second motor, and a second reversing gear is fixedly connected to the bottom end of the rotating shaft corresponding to the first reversing gear.

[0012] Preferably, the first reversing gear and the second reversing gear are perpendicular to each other, and the first reversing gear and the second reversing gear mesh with each other.

[0013] Preferably, the gasket groove is cross-shaped, and the inner width of the gasket groove matches the width of the gasket.

[0014] Preferably, a box cover is rotatably connected to the top of one side of the sliding box, and the box cover has a notch at the position corresponding to the turntable.

[0015] Preferably, the height of the telescopic notch matches the vertical distance from the bottom of the inner side of the experimental chamber to the top of the turntable.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention, through the setting of two sets of bolt mounting platforms and a turntable, can drive the turntable to rotate via a drive mechanism, thereby changing the position of the two sets of bolt mounting platforms. When the bolt mounting platform closer to the tester is working, the bolts on the other set of bolt mounting platforms can be replaced. Thus, by using two sets of bolt mounting platforms working alternately, the tester can work continuously, effectively improving the experimental efficiency of fastener thread friction coefficient.

[0018] In this invention, when testing bolts, a box cover is placed on top. The box cover with a notch prevents the turntable from obstructing the cover. This irregularly shaped box cover not only covers the bolts being tested to prevent accidents, but also does not hinder the replacement of bolts on another set of bolt mounting tables. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a cross-sectional view of the sliding box structure of this utility model;

[0021] Figure 3 This utility model Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0022] In the diagram: 1. Base; 2. Support leg; 3. Experimental chamber; 4. Detector; 5. Sliding seat; 6. Sliding box; 7. First motor; 8. Slide groove; 9. Slider; 10. Lead screw; 11. Turntable; 12. Rotating shaft; 13. Second motor; 14. First reversing gear; 15. Second reversing gear; 16. Bolt mounting platform; 17. Gasket groove; 18. Gasket; 19. Adapter; 20. Box cover; 21. Notch. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1 to 3 This utility model provides a technical solution: a fastener thread friction coefficient testing machine, including a base 1, with support legs 2 symmetrically fixedly connected to the four corners of the bottom of the base 1, and a test chamber 3 installed on the top of the base 1, wherein...

[0025] A detector 4 is installed at one end of the experimental chamber 3. A sliding seat 5 is fixedly installed at the bottom of the experimental chamber 3 away from the detector 4. A sliding box 6 is slidably arranged on the top of the sliding seat 5. A turntable 11 is rotatably connected to the top of the sliding box 6.

[0026] The turntable 11 is driven to rotate by a drive mechanism. Bolt mounting platforms 16 are symmetrically fixed to the top of both sides of the turntable 11. A gasket groove 17 is opened on the side of the bolt mounting platform 16 away from the center of the turntable 11. A gasket 18 is placed in the gasket groove 17. The shaft end of the detector 4 located in the test chamber 3 is fitted with an adapter 19.

[0027] By setting up two sets of bolt mounting platforms 16 and a turntable 11, the turntable 11 can be rotated by a drive mechanism to switch the positions of the two sets of bolt mounting platforms 16. When the bolt mounting platform 16 closest to the detector 4 is working, the bolts on the other set of bolt mounting platforms 16 can be replaced. Thus, by using two sets of bolt mounting platforms 16 working alternately, the detector 4 can work continuously, effectively improving the experimental efficiency of fastener thread friction coefficient.

[0028] Please see Figures 1 to 3 The experimental box 3 is equipped with a first motor 7 on the outside of the sliding seat 5. The top of the sliding seat 5 is provided with a sliding groove 8. The sliding box 6 is fixedly connected to the bottom of the sliding groove 8 with a slider 9. A lead screw 10 is rotatably connected in the sliding groove 8. The end of the lead screw 10 is fixedly connected to the shaft end of the first motor 7. Both the sliding groove 8 and the slider 9 are T-shaped, and the slider 9 and the lead screw 10 form a threaded connection. When testing the bolt after installation, the first motor 7 drives the lead screw 10 to rotate, so that the lead screw 10 drives the slider 9 to slide in the sliding groove 8 through the threaded connection. The slider 9 drives the sliding box 6 to slide towards the detector 4, so that the adapter 19 is fitted onto the bolt head to be tested. Through the sliding structure, it is convenient to drive the sliding box 6 to slide left and right, so as to drive the bolt mounting platform 16 to move closer to or away from the detector 4.

[0029] Please see Figures 1 to 3 The drive mechanism includes a rotating shaft 12. The turntable 11 is rotatably connected to the sliding box 6 via the rotating shaft 12. A second motor 13 is installed inside one side of the sliding box 6. A first reversing gear 14 is installed on the shaft end of the second motor 13. A second reversing gear 15 is fixedly connected to the bottom end of the rotating shaft 12 corresponding to the first reversing gear 14. The first reversing gear 14 and the second reversing gear 15 are perpendicular to each other and mesh with each other. When it is necessary to drive the turntable 11 to rotate, the second motor 13 drives the first reversing gear 14 to rotate. The first reversing gear 14 drives the second reversing gear 15 to rotate through meshing, so that the second reversing gear 15 drives the turntable 11 to rotate via the rotating shaft 12. Through the set drive mechanism, the turntable 11 is driven to rotate, and the positions of the two sets of bolt mounting platforms 16 are changed.

[0030] Please see Figures 1 to 3The gasket groove 17 is cross-shaped, and the inner width of the gasket groove 17 matches the width of the gasket 18. A box cover 20 is rotatably connected to the top of one side of the sliding box 6. The box cover 20 has a notch 21 at the position corresponding to the turntable 11. The height of the telescopic notch 21 matches the vertical distance from the bottom of the inner side of the experimental box 3 to the top of the turntable 11. When testing the bolts, the box cover 20 is closed. The box cover 20 with the notch 21 prevents the turntable 11 from obstructing the box cover 20. The irregularly shaped box cover 20 can not only cover the bolts being tested to prevent accidents, but also does not hinder the replacement of bolts on another set of bolt mounting platforms 16.

[0031] Working principle: This fastener thread friction coefficient testing machine uses two sets of bolt mounting tables 16 and a turntable 11. The turntable 11 can be rotated by a drive mechanism to switch the positions of the two sets of bolt mounting tables 16. When the bolt mounting table 16 closest to the tester 4 is working, the bolts on the other set of bolt mounting tables 16 can be replaced. Thus, by using two sets of bolt mounting tables 16 working alternately, the tester 4 can work continuously, effectively improving the experimental efficiency of fastener thread friction coefficient. When it is necessary to rotate the turntable 11, the second motor 13 drives the first reversing gear 14 to rotate. The first reversing gear 14 drives the second reversing gear 15 to rotate through meshing. The second reversing gear 15 drives the turntable 11 to rotate through the rotating shaft 12. The drive mechanism drives the turntable 11 to rotate, thereby switching the positions of the two sets of bolt mounting tables 16.

[0032] When testing the installed bolts, the first motor 7 drives the lead screw 10 to rotate, causing the lead screw 10 to drive the slider 9 to slide in the slide groove 8 through the threaded connection. The slider 9 then drives the sliding box 6 to slide towards the detector 4, so that the adapter 19 is fitted onto the bolt head to be tested. The sliding structure facilitates the left and right sliding of the sliding box 6, allowing the bolt mounting platform 16 to move closer to or away from the detector 4. When testing the bolts, the box cover 20 is closed. The box cover 20 with a notch 21 prevents the turntable 11 from obstructing the box cover 20. This irregularly shaped box cover 20 not only covers the bolt being tested to prevent accidents, but also does not hinder the replacement of bolts on another set of bolt mounting platforms 16.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fastener thread friction coefficient tester comprising a base (1) characterised in that: The bottom four corners of the base (1) are fixedly connected with supporting legs (2), and the top of the base (1) is provided with an experimental box (3), wherein, One end of the experimental box (3) is provided with a detector (4), and the bottom of the experimental box (3) away from the detector (4) is fixedly provided with a sliding seat (5), and the top of the sliding seat (5) is transversely slidably provided with a sliding box (6), and the top of the sliding box (6) is rotatably connected with a rotary table (11). The rotary table (11) is driven to rotate by a driving mechanism, and the top of the rotary table (11) is fixedly connected with a bolt mounting table (16) on both sides, and a gasket groove (17) is formed in the bolt mounting table (16) away from the center of the rotary table (11), and a gasket (18) is arranged in the gasket groove (17), and the shaft end of the detector (4) in the experimental box (3) is sleeved with an adapter (19).

2. A fastener thread friction coefficient testing machine according to claim 1, characterized in that: The experimental box (3) is provided with a first motor (7) corresponding to the outside of the sliding seat (5), the top of the sliding seat (5) is provided with a sliding groove (8), the bottom of the sliding box (6) is fixedly connected with a sliding block (9) corresponding to the sliding groove (8), and the sliding groove (8) is rotatably connected with a lead screw (10), and the end of the lead screw (10) is fixedly connected with the shaft end of the first motor (7).

3. A fastener thread friction coefficient testing machine according to claim 2, wherein: The sliding groove (8) and the sliding block (9) are both T-shaped, and the sliding block (9) and the lead screw (10) are in threaded connection.

4. The fastener thread friction coefficient testing machine of claim 1, wherein: The driving mechanism comprises a rotating shaft (12), the rotary table (11) is rotatably connected with the sliding box (6) through the rotating shaft (12), one side of the sliding box (6) is internally provided with a second motor (13), the shaft end of the second motor (13) is provided with a first reversing gear (14), and the bottom end of the rotating shaft (12) is fixedly connected with a second reversing gear (15) corresponding to the first reversing gear (14).

5. A fastener thread friction coefficient testing machine according to claim 4 wherein: The first reversing gear (14) and the second reversing gear (15) are perpendicular to each other, and the first reversing gear (14) and the second reversing gear (15) are engaged.

6. The fastener thread friction coefficient testing machine of claim 1, wherein: The gasket groove (17) is cross-shaped, and the inner width of the gasket groove (17) is consistent with the width of the gasket (18).

7. The fastener thread friction coefficient testing machine of claim 1, wherein: One side of the top of the sliding box (6) is rotatably connected with a box cover (20), and the box cover (20) is provided with a notch (21) corresponding to the position of the rotary table (11).

8. A fastener thread friction coefficient testing machine according to claim 7, characterized in that: The height of the notch (21) is consistent with the vertical distance from the bottom of the inside of the experimental box (3) to the top of the rotary table (11).

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