Bolt torsion testing machine

Abstract

The utility model relates to the technical field of bolt testing machines, and discloses a bolt torsion testing machine, which comprises a rack, a motor is fixed on the rack, a torsion sensor is fixed at the output end of the motor, and a detachable nut torsion seat is connected onto the torsion sensor; a movable base is arranged right opposite to the nut twisting base, and a detachable screw limiting base is fixed to the base. A nut and a screw to be tested can be conveniently limited through the nut torsion base and the screw limiting base and are not prone to slipping, the torsion can be measured in real time through the torsion sensor, therefore, torsion testing work of the high-strength bolt is facilitated, and the labor intensity can be greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bolt testing machines, in particular to a bolt torque testing machine. Background Art

[0002] At present, in order to avoid bolts with unqualified torque before bolts and other fasteners leave the factory, the torque of the bolts is generally tested by bolt torque testing equipment after the bolts are produced. The existing bolt torque test generally clamps the screw shaft between two clamping plates, and then turns the screw with a torque wrench to test the maximum torque of the screw. This manual test of bolt torque is inconvenient, and when high-strength bolts need to be tested, the screws are easy to slip and the staff need to use greater force, increasing labor intensity. Utility Model Content

[0003] The purpose of the utility model is to provide a bolt torque testing machine, which can conveniently limit the tested nuts and screws through the nut twisting seat and the screw limiting seat, and is not easy to slip. The torque size can be measured in real time through the torque sensor, thereby facilitating the torque testing of high-strength bolts and greatly reducing labor intensity.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions:

[0005] A bolt torque testing machine comprises a frame, a motor is fixed on the frame, a torque sensor is fixed on the output end of the motor, and a detachable nut torsion seat is connected to the torque sensor;

[0006] A movable base is arranged opposite to the nut twisting seat, and a detachable screw limit seat is fixed on the base. The torque sensor and the motor are electrically connected with a controller.

[0007] Put the test screw into the screw limit seat, put the test nut into the nut rotating seat, the motor rotates, the motor drives the torque sensor to rotate, the torque sensor drives the nut twisting seat to rotate so that the test nut rotates, and at the same time the base approaches the test nut, the base drives the test screw to be screwed on the nut through the screw limit seat, and when the nut moves inward and encounters resistance, it starts to stretch and twist the screw, the torque sensor can measure the corresponding torque and transmit it to the controller, and the controller can display it through the corresponding display device. The torque when the test screw breaks is the breaking force of the screw.

[0008] The utility model is further configured as follows: one end of the torque sensor is formed with a square head;

[0009] The nut twisting seat is formed with a square hole and a hexagonal hole arranged in communication with each other. The nut tested is hexagonal and is inserted into the hexagonal hole, and the square hole is inserted into the square head; the replacement of the nut twisting seat is convenient;

[0010] The inside of the screw limit seat is formed with a hexagonal through hole; the outside of the screw limit seat is formed with a square platform; the base is formed with a square countersunk hole, the test screw head is hexagonal and inserted into the hexagonal through hole, and the square platform is inserted into the square countersunk hole, which can facilitate the replacement of the screw limit seat.

[0011] The utility model is further configured as follows: the nut torsion seat and the screw limit seat have various specifications, and the corresponding hexagonal hole and the hexagonal through hole have various specifications.

[0012] The nut torsion seat and the screw limit seat are provided with various specifications and are detachably connected, so that the torsion breaking force test can be carried out on bolts of different specifications.

[0013] The utility model is further configured as follows: the screw limit seat is placed at one end of the square groove of the base close to the nut twisting seat;

[0014] A square pressing block is sleeved in the square groove, the square pressing block is fixed to one end of the screw, the screw is threaded in the threaded sleeve, the threaded sleeve is rotatably connected to the sleeve seat, and the sleeve seat is fixedly connected to the base;

[0015] A handle is fixed at one end of the threaded sleeve.

[0016] Through the above technical solution, the handle drives the threaded sleeve to rotate, the threaded sleeve drives the screw to move, and the screw drives the square pressure block to press against the screw limit seat to block the test screw, thereby preventing the test screw from flying out when it is twisted off and causing safety hazards.

[0017] The utility model is further configured as follows: a sliding block is fixed on the bottom of the base, the sliding block is slidably connected to a guide rail, and the guide rail is fixed on the frame.

[0018] The base can be moved on the guide rail through a slider, which can facilitate the test screw to be close to the test nut.

[0019] Stoppers are fixed at both ends of the guide rail to limit the movement of the base and prevent it from sliding off the guide rail.

[0020] The utility model is further configured as follows: a detachable support sleeve is fixed to one end of the base close to the nut twisting seat, and a central support hole is formed in the middle of the support sleeve.

[0021] The center height of the test screw can be positioned at a certain position through the center support hole, which makes it convenient for the test nut to be inserted onto the test screw; at the same time, the support seat can support the nut during the test, and if the support sleeve is deformed or severely worn in the later stage, it can be replaced at low cost and conveniently.

[0022] The outstanding effects of the utility model are:

[0023] Compared with the prior art, the nut torsion seat and the screw limit seat can conveniently limit the nuts and screws under test, and are not easy to slip. The torque sensor can measure the torque in real time, which is convenient for the torque test of high-strength bolts and can greatly reduce the labor intensity.

[0024] The nut torque seat and the screw limit seat are provided with various specifications and are connected by means of a socket, so they can be easily replaced and can detect bolts of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a top view of the utility model;

[0026] Figure 2 for Figure 1 A partial enlarged view of A.

[0027] Reference numerals: 10, frame;

[0028] 20. Motor; 21. Torque sensor; 22. Nut torsion seat;

[0029] 211, square head;

[0030] 221, square hole; 222, hexagonal hole;

[0031] 30. Base; 31. Screw limit seat; 32. Square pressure block; 33. Screw; 34. Threaded sleeve; 35. Sleeve seat; 36. Handle; 37. Slider; 38. Guide rail; 39. Stopper;

[0032] 301, square countersunk hole; 302, square groove;

[0033] 311, hexagonal through hole; 312, square platform;

[0034] 40. support sleeve; 401. center support hole;

[0035] 90. Test screws; 91. Test nuts. DETAILED DESCRIPTION

[0036] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0037] The following references Figure 1 to Figure 2 The utility model is described as follows:

[0038] A bolt torque testing machine comprises a frame 10, a motor 20 is fixed on the frame 10, a torque sensor 21 is fixed to the output end of the motor 20, and a detachable nut torsion seat 22 is connected to the torque sensor 21;

[0039] A movable base 30 is provided directly opposite to the nut twisting seat 22, and a detachable screw limit seat 31 is fixed on the base 30. The torque sensor and the motor are electrically connected to a controller.

[0040] Put the test screw into the screw limit seat, put the test nut into the nut rotating seat, the motor rotates, the motor drives the torque sensor to rotate, the torque sensor drives the nut twisting seat to rotate so that the test nut rotates, and at the same time the base approaches the test nut, the base drives the test screw to be screwed on the nut through the screw limit seat, and when the nut moves inward and encounters resistance, it starts to stretch and twist the screw, the torque sensor can measure the corresponding torque and transmit it to the controller, and the controller can display it through the corresponding display device. The torque when the test screw breaks is the breaking force of the screw.

[0041] One end of the torque sensor 21 is formed with a square head 211;

[0042] The nut twisting seat 22 is formed with a square hole 221 and a hexagonal hole 222 which are arranged in communication. The nut in the test is hexagonal and is inserted into the hexagonal hole. The square hole 221 is inserted into the square head 211. The replacement of the nut twisting seat is convenient.

[0043] The screw limit seat 31 has a hexagonal through hole 311 formed inside; the screw limit seat 31 has a square platform 312 formed outside; the base 30 has a square countersunk hole 301 formed on it. The screw head used in the test is hexagonal and inserted into the hexagonal through hole 311, and the square platform 312 is inserted into the square hole 301, so that the screw limit seat can be easily replaced.

[0044] The nut twisting seat 22 and the screw limiting seat 31 have various specifications, and the corresponding sizes of the hexagonal hole 222 and the hexagonal through hole 311 have various specifications.

[0045] The nut torsion seat and the screw limit seat are provided with various specifications and are detachably connected, so that the torsion breaking force test can be carried out on bolts of different specifications.

[0046] The screw limiting seat 31 is placed on one end of the square groove 302 of the base 30 close to the nut twisting seat 22;

[0047] A square pressing block 32 is sleeved in the square groove 302, and the square pressing block 32 is fixed to one end of a screw rod 33, and the screw rod 33 is screwed in a threaded sleeve 34, and the threaded sleeve 34 is rotatably connected to a sleeve seat 35, and the sleeve seat 35 is fixedly connected to the base 30;

[0048] A handle 36 is fixed to one end of the threaded sleeve 34 .

[0049] The handle drives the threaded sleeve to rotate, the threaded sleeve drives the screw to move, and the screw drives the square pressure block to press against the screw limit seat to block the tested screw, thereby preventing the tested screw from flying out when it is twisted off and causing safety hazards.

[0050] A slider 37 is fixed to the bottom of the base 30 . The slider 37 is slidably connected to a guide rail 38 , and the guide rail 38 is fixed to the frame 10 .

[0051] The base can be moved on the guide rail through a slider, which can facilitate the test screw to be close to the test nut.

[0052] Stoppers 39 are fixed at both ends of the guide rail 38 to limit the movement of the base and prevent it from sliding off the guide rail.

[0053] A detachable support sleeve 40 is fixed to one end of the base 30 close to the nut twisting seat 22 , and a central support hole 401 is formed in the middle of the support sleeve 40 .

[0054] The center height of the test screw can be positioned at a certain position through the center support hole, which makes it convenient for the test nut to be inserted onto the test screw; at the same time, the support seat can support the nut during the test, and if the support sleeve is deformed or severely worn in the later stage, it can be replaced at low cost and conveniently.

[0055] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications of the above assumptions should also be regarded as the protection scope of the present invention.

Claims

1. A bolt torque testing machine, comprising a frame (10), characterized in that: A motor (20) is fixed on the frame (10), a torque sensor (21) is fixed to the output end of the motor (20), and a detachable nut torsion seat (22) is connected to the torque sensor (21); A movable base (30) is provided directly opposite the nut twisting seat (22), and a detachable screw limiting seat (31) is fixed on the base (30).

2. A bolt torque testing machine according to claim 1, characterized in that: One end of the torque sensor (21) is formed with a square head (211); The nut twisting seat (22) is formed with a square hole (221) and a hexagonal hole (222) which are arranged in communication with each other, and the square hole (221) is inserted into the square head (211); The screw limiting seat (31) is internally formed with a hexagonal through hole (311); the screw limiting seat (31) is externally formed with a square platform (312); the base (30) is formed with a square countersunk hole (301), and the square platform (312) is inserted into the square countersunk hole (301).

3. A bolt torque testing machine according to claim 2, characterized in that: The nut twisting seat (22) and the screw limiting seat (31) have various specifications, and the corresponding hexagonal hole (222) and hexagonal through hole (311) have various sizes.

4. A bolt torque testing machine according to claim 1, characterized in that: The screw limiting seat (31) is placed on one end of the square groove (302) of the base (30) close to the nut twisting seat (22); A square pressing block (32) is sleeved in the square groove (302), the square pressing block (32) is fixed to one end of a screw rod (33), the screw rod (33) is screwed in a threaded sleeve (34), the threaded sleeve (34) is rotatably connected to a sleeve seat (35), and the sleeve seat (35) is fixedly connected to the base (30); A handle (36) is fixed to one end of the threaded sleeve (34).

5. A bolt torque testing machine according to claim 1, characterized in that: A slider (37) is fixed to the bottom of the base (30), and the slider (37) is slidably connected to a guide rail (38), and the guide rail (38) is fixed to the frame (10).

6. A bolt torque testing machine according to claim 5, characterized in that: Stoppers (39) are fixed at both ends of the guide rail (38).

7. A bolt torque testing machine according to claim 1, characterized in that: A detachable support sleeve (40) is fixed to one end of the base (30) close to the nut twisting seat (22), and a central support hole (401) is formed in the middle of the support sleeve (40).

Images