Sample clamping device of full-automatic tension-torsion testing machine

Abstract

The utility model relates to the technical field of tension-torsion testing machines, in particular to a sample clamping device of a full-automatic tension-torsion testing machine, which comprises a clamp, a main motor, a speed reducer and a nut clamping sleeve, a T-shaped clamping groove is arranged on the clamp, the main motor is connected with the speed reducer, the nut clamping sleeve is arranged at the output end of the speed reducer, a nut clamping hole is arranged on the nut clamping sleeve, and the nut clamping hole is connected with the speed reducer. And the nut clamping hole corresponds to the T-shaped clamping groove in position. According to the utility model, the main motor rotates to drive the speed reducer and the nut clamping sleeve to rotate, so that full-automatic detection of tension and torsion of the high-strength bolt is realized, and the detection efficiency and accuracy of the high-strength bolt are improved.

Description

Technical Field

[0001] This utility model relates to the field of tensile and torsion testing machine technology, and in particular to a sample clamping device for a fully automatic tensile and torsion testing machine. Background Technology

[0002] With the continuous development of industrial and civil engineering systems, fasteners have become indispensable, especially in the construction of large-scale projects. Ordinary bolts can no longer meet the requirements, leading to a significant increase in the application of high-strength bolts. Against this backdrop, the increasing use of high-strength bolts, coupled with considerations for public safety in engineering projects, has resulted in stringent requirements for the mechanical properties of high-strength bolts from both construction and acceptance authorities. Mechanical performance testing of high-grade and large-specification high-strength bolts has become a crucial indicator shared by manufacturers, users, and acceptance authorities. Therefore, a fully automated testing equipment is urgently needed to address the testing needs of high-strength bolts, particularly for torsion testing. Summary of the Invention

[0003] The purpose of this invention is to solve the problems in the prior art by providing a fully automatic tensile-torsion testing machine sample clamping device, which solves the problem of torsion testing of high-strength bolts in the prior art.

[0004] The technical solution of this utility model is:

[0005] A fully automatic tensile and torsion testing machine sample clamping device includes a clamp, a main motor, a reducer, and a nut sleeve. The clamp is provided with a T-shaped groove. The main motor is connected to the reducer. The nut sleeve is located at the output end of the reducer and is provided with a nut locking hole. The nut locking hole corresponds to the position of the T-shaped groove.

[0006] As a preferred technical solution, it also includes a sliding housing, a tensioning screw, and a tensioning nut. The tensioning screw is rotatably mounted on the sliding housing, and the tensioning nut is threadedly connected to the tensioning screw. One end of the tensioning screw is located inside the sliding housing, and the end of the tensioning screw located inside the sliding housing is rotatably connected to a pull sleeve. The pull sleeve is provided with a guide plate, and the clamp is located on the guide plate.

[0007] As a preferred technical solution, the tension screw is equipped with a tension sensor.

[0008] As a preferred technical solution, it also includes a working platform, on which a sliding motor, a sliding screw, and a slide rail are provided. The output end of the sliding motor is connected to the sliding screw. The sliding housing is provided with a slider and a nut block. The slider is slidably installed on the slide rail, and the sliding screw is threadedly connected to the nut block.

[0009] As a preferred technical solution, a sample pad is provided between the clamp and the nut sleeve. The sample pad has a T-shaped hole, and the T-shaped hole corresponds to the position of the T-shaped groove. A lifting device is provided at the lower end of the sample pad.

[0010] As a preferred technical solution, the lifting device includes a base, an upper fixed seat, a lower fixed seat, a lifting frame, a lifting screw, and a lifting motor. The lower fixed seat is located on the base, and the sample pad is located on the upper fixed seat. The lifting frame is a parallelogram structure, and adjacent sides of the lifting frame are hinged together. One pair of corners of the lifting frame is hinged to the upper and lower fixed seats, and a first lifting block and a second lifting block are respectively hinged to the other pair of corners of the lifting frame. Both the first and second lifting blocks are threadedly connected to the lifting screw. A lifting fixing plate is provided on the second lifting block, and the lifting motor is located on the lifting fixing plate. A transmission wheel is provided on the output end of the lifting motor and one end of the lifting screw, and a conveyor belt is installed between the two transmission wheels.

[0011] As a preferred technical solution, a baffle is provided at one end of the lifting screw.

[0012] As a preferred technical solution, a torque sensor is provided on the output shaft of the reducer.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This utility model discloses a fully automatic tensile and torsion testing machine sample clamping device. It comprises a clamp, a main motor, a reducer, and a nut sleeve. The clamp has a T-shaped groove, and the nut sleeve has a nut retaining hole. The sample is clamped in the T-shaped groove of the clamp, and a nut is installed on the sample's screw. The sample nut is installed in the nut retaining hole. The main motor rotates, driving the reducer and nut sleeve to rotate, thus achieving fully automatic detection of the tensile and torsional forces of high-strength bolts, improving the testing efficiency and accuracy of high-strength bolts. Attached Figure Description

[0015] Figure 1 This is a perspective view of the specimen clamping device of the fully automatic tensile-torsion testing machine of this utility model.

[0016] Figure 2 This is a schematic diagram of the internal structure of the sliding box of this utility model;

[0017] Figure 3 For the present utility model Figure 2 Enlarged schematic diagram of section I;

[0018] Figure 4 This is a schematic diagram of the lifting device of this utility model;

[0019] Figure 5 This is a schematic diagram showing the sample placement state of this utility model;

[0020] Figure 6 This is a schematic diagram of the sample clamping state of this utility model.

[0021] In the diagram: 1. Tensioning screw; 2. Slide rail; 3. Working platform; 4. Slider; 5. Nut sleeve; 6. Lifting device; 7. Torque sensor; 8. Main motor; 9. Tensioning nut; 10. Tension sensor; 11. Sliding box; 12. Pull sleeve; 13. Guide plate; 14. Fixture; 15. Sample pad; 16. Sample; 17. Reducer; 18. Sliding screw; 19. Nut block; 20. Nut retaining hole; 21. T-hole; 22. T-slot;

[0022] 61. First lifting block; 62. Baffle; 63. Lifting frame; 64. Base; 65. Upper fixed seat; 66. Lifting motor; 67. Lifting fixed plate; 68. Conveyor belt; 69. Lower fixed seat; 610. Lifting screw; 611. Second lifting block. Detailed Implementation

[0023] To make the technical means, technical features, utility model purpose and technical effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations.

[0024] like Figure 1-3 The diagram shown is a schematic diagram of the specimen clamping device of the fully automatic tensile-torsion testing machine of this utility model.

[0025] The fully automatic tensile and torsion testing machine sample clamping device of this embodiment includes a working platform 3, a sliding housing 11, a main motor 8, and a reducer 17. Two sets of parallel slide rails 2 are fixed on the working platform 3. Two rows of parallel sliders 4 are fixed at the bottom of the sliding housing 11. The sliders 4 are slidably mounted on the slide rails 2, and the sliding housing 11 slides along the slide rails 2 via the sliders 4. A sliding motor is fixed at the bottom of the working platform 3, and a sliding lead screw 18 is rotatably mounted on the upper surface of the working platform 3. The output end of the sliding motor is connected to the sliding lead screw 18, and the sliding motor drives the sliding lead screw 18 to rotate. A nut block 19 is fixed at the bottom of the sliding housing 11, and the sliding lead screw 18 is threadedly connected to the nut block 19. The sliding motor and the sliding housing 11 slide along the slide rails.

[0026] A tensioning screw 1 is threaded onto the sliding housing 11. One end of the tensioning screw 1 extends into the sliding housing 11, and the end of the tensioning screw 1 extending into the sliding housing 11 is rotatably connected to a pull sleeve 12. A guide plate 13 is fixed on the pull sleeve 12. The guide plate 13 is slidably connected to the inner side of the sliding housing 11. The guide plate 13 slides along the inner side of the sliding housing 11. A clamp 14 is fixed on the guide plate 13. A T-shaped slot 22 is provided on the clamp 14. The T-shaped slot 22 is used to clamp the hexagonal part of the sample 16. The screw part of the sample 16 extends to the outside of the T-shaped slot 22.

[0027] The other end of the tension screw 1 extends out of the outside of the sliding box 11, and a tension nut 9 and a tension sensor 10 are installed on the tension screw 1 extending out of the sliding box 11. The tension nut 9 is threadedly connected to the tension screw 1. After the sample 16 is installed in the fixture 14, the tension nut 9, in conjunction with the locking end of the sample 16, serves to lock and pre-tighten. The tension sensor 10 is used to monitor the tension formed by the locking nut 9.

[0028] The reducer 17 is fixed on the working platform 3, and the main motor 8 is fixed on the input end of the reducer 17. A torque sensor 7 and a nut sleeve 5 are installed on the connecting shaft at the output end of the reducer 17. The torque sensor 7 is used to monitor the speed of the reducer 17. The nut sleeve 5 has a nut retaining hole 20, which corresponds to the position of the T-shaped groove 22. A nut is threaded on one end of the screw of the sample 16 that extends out of the T-shaped groove 22. The nut matches the size of the nut retaining hole 20. The nut retaining hole 20 is used to drive the nut on the screw of the sample 16 to rotate, so that the sample bolt generates tension and torque.

[0029] A lifting device 6 is fixed on the working platform 3. A pad 15 is fixed at the upper end of the lifting device 6. The pad 15 is installed between the clamp 14 and the nut sleeve 5. A T-shaped hole 21 is opened on the pad 15. The size of the round hole of the T-shaped hole 21 corresponds to the size of the sample 16. The sample 16 passes through the upper round hole of the T-shaped hole 21. After the pad 15 moves upward by the lifting device 6, the bottom of the T-shaped hole 21 supports the screw part of the sample 16, which plays the role of supporting the sample 16 and increasing the stability of the sample 16 during testing.

[0030] A base 64 is fixed to the bottom of the lifting device 6, and the base 64 is fixed to the working platform 3. A lower fixed seat 69 is fixed to the base 64. An upper fixed plate 65 is fixed to the lower end of the sample pad 15. A lifting frame 63 is installed between the upper fixed plate 65 and the lower fixed plate 69. The lifting frame 63 has a parallelogram structure, and the adjacent sides of the lifting frame 63 are hinged. One pair of corners of the lifting frame 63 is hinged to the upper fixed seat 65 and the lower fixed seat 69, respectively. A first lifting block 61 and a second lifting block 611 are hinged to the other pair of corners of the lifting frame 63, respectively. A lifting plate 67 is fixed to the upper part of the sample pad 15. A lifting screw 610 is rotatably mounted on the lifting plate 67. The first lifting block 61 and the second lifting block 611 are both threadedly connected to the lifting screw 610. A lifting motor 66 is fixed to the lifting plate 67. A transmission wheel is installed on the output end of the lifting motor 66 and one end of the lifting screw 610. A conveyor belt 68 is installed on the two transmission wheels. The lifting motor 66 drives the lifting screw 610 to rotate. The rotation of the lifting screw 610 causes the first lifting block 61 and the second lifting block 611 to slide in opposite directions, thereby realizing the lifting and lowering movement of the sample pad 15. A baffle 62 is fixed to the other end of the lifting screw 610 to limit the first lifting block 61 and prevent the first lifting block 61 from slipping off the lifting screw 610.

[0031] like Figure 5 and Figure 6 The diagram shown is a schematic of the sample of this invention placed in a clamping state.

[0032] When installing the sample 16, it first passes through the T-shaped hole 21 on the sample pad 15 and is placed downwards at the bottom of the T-shaped hole 21. A nut is installed at the end of the screw of the sample 16. The sample pad 15 is moved downwards by the lifting device 6, and the hexagonal end of the sample 16 is placed in the T-shaped slot 22 of the clamp 14. The sliding motor is started, and the sliding drive sliding box 11 slides. The sliding box 11 moves the sample 16 towards the nut sleeve 5. After the nut on the screw of the sample 16 is inserted into the nut slot 20, the sliding motor is stopped. The tension nut 9 is rotated to tighten and pre-position the sample 16. Then the main motor 8 is started. The main motor 8 drives the reducer 17 to rotate. The reducer 17 rotates and drives the torque sensor 7. The torque sensor 7 drives the nut sleeve 5. The nut sleeve 5 rotates the nut of the sample 16, so that the bolt generates tension and torque.

[0033] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. All equivalent changes and modifications made in accordance with the scope of the claims of this utility model should fall within the technical scope of this utility model.

Claims

1. A specimen clamping device for a fully automatic tensile-torsion testing machine, characterized in that, The device includes a clamp (14), a main motor (8), a reducer (17), and a nut sleeve (5). The clamp (14) is provided with a T-shaped slot (22). The main motor (8) is connected to the reducer (17). The nut sleeve (5) is located at the output end of the reducer (17). The nut sleeve (5) is provided with a nut hole (20). The nut hole (20) corresponds to the position of the T-shaped slot (22).

2. The specimen clamping device for the fully automatic tensile-torsion testing machine according to claim 1, characterized in that, It also includes a sliding housing (11), a tensioning screw (1) and a tensioning nut (9). The tensioning screw (1) is rotatably mounted on the sliding housing (11). The tensioning nut (9) is threadedly connected to the tensioning screw (1). One end of the tensioning screw (1) is located inside the sliding housing (11), and the end of the tensioning screw (1) located inside the sliding housing (11) is rotatably connected to a pull sleeve (12). A guide plate (13) is provided on the pull sleeve (12), and the clamp (14) is located on the guide plate (13).

3. The specimen clamping device for the fully automatic tensile-torsion testing machine according to claim 2, characterized in that, The tension screw (1) is equipped with a tension sensor (10).

4. The specimen clamping device for the fully automatic tensile-torsion testing machine according to claim 2, characterized in that, It also includes a working platform (3), on which a sliding motor, a sliding screw (18) and a slide rail (2) are provided. The output end of the sliding motor is connected to the sliding screw (18). The sliding box (11) is provided with a slider (4) and a nut block (19). The slider (4) is slidably installed on the slide rail (2), and the sliding screw (18) is threadedly connected to the nut block (19).

5. The specimen clamping device for the fully automatic tensile-torsion testing machine according to claim 1, characterized in that, A sample pad (15) is provided between the clamp (14) and the nut sleeve (5). A T-shaped hole (21) is provided on the sample pad (15). The T-shaped hole (21) and the T-shaped slot (22) are positioned corresponding to each other. A lifting device (6) is provided at the lower end of the sample pad (15).

6. The specimen clamping device for the fully automatic tensile-torsion testing machine according to claim 5, characterized in that, The lifting device (6) includes a base (64), an upper fixed seat (65), a lower fixed seat (69), a lifting frame (63), a lifting screw (610), and a lifting motor (66). The lower fixed seat (69) is located on the base (64), and the sample pad (15) is located on the upper fixed seat (65). The lifting frame (63) is a parallelogram structure, and adjacent sides of the lifting frame (63) are hinged together. One pair of corners of the lifting frame (63) is hinged to the upper fixed seat (65) and the lower fixed seat (69). On the other side of the lifting frame (63), a first lifting block (61) and a second lifting block (611) are respectively hinged. The first lifting block (61) and the second lifting block (611) are both threadedly connected to the lifting screw (610). The second lifting block (611) is provided with a lifting fixing plate (67). The lifting motor (66) is provided on the lifting fixing plate (67). The output end of the lifting motor (66) and one end of the lifting screw (610) are both provided with a transmission wheel. A conveyor belt (68) is installed between the two transmission wheels.

7. The specimen clamping device for the fully automatic tensile-torsion testing machine according to claim 6, characterized in that, One end of the lifting screw (610) is provided with a baffle (62).

8. The specimen clamping device for the fully automatic tensile-torsion testing machine according to claim 1, characterized in that, A torque sensor (7) is provided on the output shaft of the reducer (17).

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