Driving groove bolt torsion testing mechanism

Abstract

The utility model discloses a driving groove bolt torsion test mechanism, which comprises a rack, a test board, a support plate, a guide rod, a telescopic cylinder, a test sleeve, a tool sleeve, a support sleeve, a test turntable and a circular arc brake disc, and is characterized in that the test board is fixedly arranged at the top of the rack. The testing structure can be used for testing starting and braking of the testing turntable driven by the simulated driving groove bolt, has the advantage of high accuracy of a simulation testing result, and can be used for observing whether a driving groove bolt main body subjected to sampling testing and a head driving groove of the driving groove bolt main body are distorted, deformed or cracked or not, and the testing turntable and the supporting sleeve adopt a square groove transmission mode; the device can reduce the shearing force on the fastening bolt, avoids the problem that the test turntable and the supporting sleeve are difficult to detach and separate due to bending deformation of the fastening bolt, limits and accommodates the lock nut through the tool sleeve which can be adjusted up and down, and facilitates the screwing, locking and fixing of the driving groove bolt main body and the lock nut.

Description

Technical Field

[0001] The utility model belongs to the technical field of bolt testing, in particular to a driving slot bolt torque testing mechanism. Background Art

[0002] The head of the drive slot bolt is provided with a tool drive slot, and the stop limit surface of the tool drive slot is provided with a vertical surface structure, and the tool entrance on the other side is provided with a slope structure of 20°-30° to avoid the problem that the manufacturer has difficulty in repairing due to the user's mistaken disassembly and self-repair. It is screwed and installed on the driven shaft, or the wheel disc is locked and fixed on the driven shaft, which can realize low-speed drive rotation of the driven shaft or the combination of the driven shaft and the wheel disc. After the drive slot bolt is produced, its torque needs to be sampled and tested. During the test, the torque of the drive slot bolt needs to be started and braked for simulation test to improve the test accuracy. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a mechanism capable of performing start-up and brake sampling simulation tests on the actual application conditions of the driving slot bolts.

[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: a drive slot bolt torque testing mechanism, including a frame, a test bench, a support plate, a guide rod, a telescopic cylinder, a test sleeve, a tool sleeve, a support sleeve, a test turntable, an arc-shaped brake disc and a clamping bolt. The test bench is fixedly mounted on the top of the frame, the test sleeve is fixedly mounted on the top of the test bench, the cylinder body of the telescopic cylinder is fixedly mounted on the frame, the upper and lower ends of the guide rod are respectively fixedly mounted on the test bench and the frame, the support plate is slidably mounted on the guide rod, the piston rod of the telescopic cylinder is fixedly connected to the center position of the support plate, the support sleeve is composed of an upper cube structure and a lower cylindrical structure integrally formed, the upper cube structure and the lower cylindrical structure are provided with interconnected through holes, a first ball bearing is fixedly mounted on the top of the test bench, and the bottom of the support sleeve is fixedly mounted on the first ball bearing. On the rotating body of the bearing, a square groove is provided at the bottom of the test turntable which matches the upper cube structure of the support sleeve, and the top of the support sleeve is embedded in the square groove at the bottom of the test turntable, and the test turntable and the support sleeve are fixedly connected by fastening bolts, and the arc-shaped brake disc is slidably installed in the slot at the top of the test sleeve, and a second ball bearing is fixedly installed on the test sleeve, and the rear end cylindrical rod of the clamping bolt is fixedly connected to the rotating body of the second ball bearing, and the threaded portion of the clamping bolt is threadedly connected to the arc-shaped brake disc, and the outer edge of the test turntable is crimped on the test sleeve, and the lower part of the tool sleeve is fixedly installed on the support plate, and the upper part of the tool sleeve slides through the test bench and is placed in the through hole of the support sleeve, and a tool hole matching the lock nut and a accommodating hole matching the rod of the driving groove bolt are connected in the tool sleeve, and an installation test hole is provided at the center of the test turntable.

[0005] Preferably, a wear-resistant ring is sleeved and installed on the outer side of the test turntable, and the wear-resistant ring is screwed and fixed to the test turntable.

[0006] Preferably, a guide sleeve is fixedly mounted on the support plate, and the guide sleeve is slidably mounted on the guide rod.

[0007] Preferably, mesh anti-slip patterns are provided on the upper and lower surfaces of the edges of the test holes installed on the test turntable.

[0008] Preferably, a hand wheel is fixedly mounted on the outer end of the clamping bolt.

[0009] Compared with the prior art, the benefits of the utility model are as follows: the test structure can randomly check the simulated drive slot bolt driving the test turntable start and brake test, has the advantage of high accuracy of simulation test results, and observe whether the drive slot bolt body and its head drive slot under random inspection have any distortion, deformation or cracking problems. The square groove transmission method is adopted between the test turntable and the support sleeve, which can reduce the shear force on the fastening bolt and avoid the problem that the test turntable and the support sleeve are difficult to disassemble and separate due to its bending deformation. At the same time, the lock nut is limited and accommodated by the tool sleeve that can be adjusted up and down, which is convenient for the drive slot bolt body and the lock nut to be screwed and locked. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The utility model is further described below in conjunction with the accompanying drawings.

[0011] Figure 1 It is a schematic diagram of the internal structure of the utility model.

[0012] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure at M.

[0013] Figure 3 It is a schematic diagram of the structure of the tool set. DETAILED DESCRIPTION

[0014] The utility model is described in detail below in conjunction with specific implementation methods:

[0015] like Figures 1 to 3The drive slot bolt torque testing mechanism shown in the figure includes a frame 1, a test bench 2, a support plate 3, a guide rod 31, a telescopic cylinder 4, a test sleeve 5, a tool sleeve 6, a support sleeve 7, a test turntable 8, an arc-shaped brake disc 9 and a clamping bolt 92. The test bench 2 is fixedly mounted on the top of the frame 1, the test sleeve 5 is fixedly mounted on the top of the test bench 2, the cylinder body of the telescopic cylinder 4 is fixedly mounted on the frame 1, the upper and lower ends of the guide rod 31 are respectively fixedly mounted on the test bench 2 and the frame 1, the support plate 3 is slidably mounted on the guide rod 31, the piston rod of the telescopic cylinder 4 is fixedly connected to the center position of the support plate 3, the support sleeve 7 is composed of an upper cube structure and a lower cylindrical structure integrally formed, and the upper cube structure and the lower cylindrical structure are provided with connected through holes, a first ball bearing 71 is fixedly mounted on the top of the test bench 2, the retaining frame of the first ball bearing 71 is fixedly mounted on the top of the test bench 2, and the bottom of the support sleeve 7 is fixedly mounted on the first ball bearing 7 1, the bottom of the test turntable 8 is provided with a square groove that matches the upper cube structure of the support sleeve 7, the top of the support sleeve 7 is embedded in the square groove at the bottom of the test turntable 8, the test turntable 8 and the support sleeve 7 are fixedly connected by fastening bolts 82, the arc-shaped brake disc 9 is slidably installed in the slot 51 at the top of the test sleeve 5, and the test sleeve 5 is fixedly installed with a second ball bearing 91, and the rear end cylindrical rod of the clamping bolt 92 is connected to the rotating body of the second ball bearing 91. Fixed connection, the threaded portion of the clamping bolt 92 is threadedly connected to the arc-shaped brake disc 9, the outer edge of the test turntable 8 is crimped on the test sleeve 5, the lower part of the tool sleeve 6 is fixedly installed on the support plate 3, the upper part of the tool sleeve 6 slides through the test bench 2 and is placed in the through hole of the support sleeve 7, the tool sleeve 6 is connected to a tool hole matched with a lock nut 102 and a receiving hole 61 matched with the driving groove bolt rod 101, and an installation test hole is provided at the center of the test turntable 8.

[0016] A wear-resistant ring 81 is installed on the outer side of the test turntable 8, and the wear-resistant ring 81 is screwed and fixed to the test turntable 8. After the wear-resistant ring 81 is worn under the clamping action of the arc-shaped brake disc 9, only the wear-resistant ring 81 needs to be disassembled and replaced, and the test wheel 8 can continue to be used to reduce the use cost of the test turntable 8. At the same time, the wear-resistant ring 81 can be made of a metal material with high wear resistance to extend the maintenance and replacement period of the wear-resistant ring 81.

[0017] A guide sleeve 32 is fixedly mounted on the support plate 3 , and the guide sleeve 32 is slidably mounted on the guide rod 31 to improve the linearity of the up and down movement of the combination of the support plate 3 and the tool sleeve 6 .

[0018] The upper and lower surfaces of the edges of the test holes installed on the test turntable 8 are both provided with mesh anti-skid patterns to prevent the combination of the bolt body and the lock nut from rotating relative to the test turntable 8 during testing.

[0019] A hand wheel is fixedly mounted on the outer end of the clamping bolt 92 , and the clamping bolt 92 can be rotated conveniently by the hand wheel to adjust the position of the arc-shaped brake disc 9 .

[0020] The lock nut 102 is placed in the tool hole at the top of the tool sleeve 6, and the driving groove bolt body is placed in the installation test hole in the center of the test turntable 8. The telescopic cylinder 4 is started to push the combination of the support plate 3 and the tool sleeve 6 to move upward. The driving groove bolt body is rotated by the adapter wrench to connect and fix it with the test turntable 8 through the lock nut 102. The lower end of the driving groove bolt rod 101 is located in the accommodating hole 61, and the lower end of the output shaft of the driving mechanism is set to a bayonet structure that is compatible with the head of the driving groove bolt body. The output shaft of the driving mechanism is started to drive the driving groove bolt body, the lock nut 102 and the combination of the test turntable 8 Rotate, the tester turns the clamping bolt 92 to make the arc-shaped brake disc 9 brake and slow down the test turntable 8, and then drives the combination of the drive slot bolt body, the lock nut 102 and the test turntable 8 to rotate again through the output shaft of the driving mechanism, and repeats the test in this way. After the test is completed, the combination of the drive slot bolt body, the lock nut 102 and the test turntable 8 is removed from the support sleeve 7, and observe whether there is any deformation or distortion of the drive slot bolt body as a whole, and observe whether there is any deformation or cracking of the head drive slot 100 of the drive slot bolt body, and then clamp the head of the drive slot bolt body with a vise to disassemble it.

Claims

1. A drive slot bolt torque testing mechanism, characterized in that: The invention comprises a frame (1), a test bench (2), a support plate (3), a guide rod (31), a telescopic cylinder (4), a test sleeve (5), a tool sleeve (6), a support sleeve (7), a test turntable (8), an arc-shaped brake disc (9) and a clamping bolt (92), wherein the test bench (2) is fixedly mounted on the top of the frame (1), the test sleeve (5) is fixedly mounted on the top of the test bench (2), the cylinder body of the telescopic cylinder (4) is fixedly mounted on the frame (1), and the upper and lower ends of the guide rod (31) are respectively fixedly mounted on the test bench (2), the frame ( 1), the support plate (3) is slidably mounted on the guide rod (31), the piston rod of the telescopic cylinder (4) is fixedly connected to the center position of the support plate (3), the support sleeve (7) is formed by an upper cube structure and a lower cylindrical structure, and the upper cube structure and the lower cylindrical structure are provided with interconnected through holes, the top of the test bench (2) is fixedly mounted with a first ball bearing (71), the bottom of the support sleeve (7) is fixedly mounted on the rotating body of the first ball bearing (71), and the bottom of the test turntable (8) is provided with A square groove matched with the upper cube structure of the support sleeve (7); the top of the support sleeve (7) is embedded in the square groove at the bottom of the test turntable (8); the test turntable (8) and the support sleeve (7) are fixedly connected by a fastening bolt (82); the arc-shaped brake disc (9) is slidably installed in the slot (51) at the top of the test sleeve (5); a second ball bearing (91) is fixedly installed on the test sleeve (5); the rear end cylindrical rod of the clamping bolt (92) is fixedly connected to the rotating body of the second ball bearing (91); the clamping bolt The threaded portion of (92) is threadedly connected to the arc-shaped brake disc (9), the outer edge of the test turntable (8) is crimped onto the test sleeve (5), the lower portion of the tool sleeve (6) is fixedly mounted on the support plate (3), the upper portion of the tool sleeve (6) slides through the test bench (2) and is placed in the through hole of the support sleeve (7), the tool sleeve (6) is connected to a tool hole that matches the lock nut (102) and a receiving hole (61) that matches the driving groove bolt rod (101), and a mounting test hole is arranged at the center of the test turntable (8).

2. The drive slot bolt torque testing mechanism according to claim 1, characterized in that: A wear-resistant ring (81) is sleeved and mounted on the outer side of the test turntable (8), and the wear-resistant ring (81) is screwed and fixed to the test turntable (8).

3. The drive slot bolt torque testing mechanism according to claim 1, characterized in that: A guide sleeve (32) is fixedly mounted on the support plate (3), and the guide sleeve (32) is slidably sleeved on the guide rod (31).

4. The drive slot bolt torque testing mechanism according to claim 1, characterized in that: The upper and lower surfaces of the edges of the test holes installed on the test turntable (8) are both provided with mesh anti-slip patterns.

5. The drive slot bolt torque testing mechanism according to claim 1, characterized in that: A hand wheel is fixedly mounted on the outer end of the clamping bolt (92).

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