Auxiliary device for detecting torque of bolt assembly

Abstract

The utility model discloses an auxiliary device for detecting the torque of a bolt assembly, which solves the problems that the device in the prior art is low in size adjustment adaptability and fixation reliability and inconvenient to operate, and comprises a fixed block provided with a limiting hole, and a hexagonal core with adjustable size is embedded in the fixed block. The hexagonal core comprises six moving assemblies and a gear rotating disc, a hexagonal hole is defined by the six moving assemblies, the gear rotating disc is provided with a sliding rail, the moving assemblies are connected with the sliding rail, and the hexagonal hole is aligned with the limiting hole. According to the utility model, any size can be adjusted within a limited range, the adaptability and the fixing reliability of the device are improved, and the adjustment is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to torque detection technical field, specifically provide a kind of auxiliary device for detecting bolt assembly torque. BACKGROUND

[0002] The bolt assembly used for the connecting wire of lead-acid battery has torque requirement, and if the torque of the bolt assembly used is unqualified, the connecting effect will be affected, and the torque detection of bolt assembly is an important control item. In the traditional torque detection of bolt assembly, the nut end of bolt assembly is fixed on the bench clamp, the threaded end is matched with nut, and torque wrench is used for testing. In this method, the nut needs to be fixed on the bench clamp every time, and sometimes it needs to be reinstalled once due to unstable fixation on the bench clamp, which affects work efficiency.

[0003] The existing auxiliary device for detecting the torque of bolt assembly, for example, a "core shaft for dynamic torque test" disclosed in Chinese patent document, with publication number CN220268184U, can only adjust several specific size hexagonal grooves on the core shaft, and detect several specific size bolts, resulting in low adaptability of the core shaft. When the size of the adjusting tube or the size of the measured bolt assembly is not accurate enough, the bolt assembly cannot be effectively fixed on the core shaft, the bolt assembly is prone to move or fall off relative to the adjusting tube during detection of the bolt assembly, resulting in low detection accuracy. At the same time, since the parts of the core shaft are relatively independent, the operation process of adjusting the size is not convenient, and the parts are prone to fall off and lose when operated improperly. SUMMARY

[0004] To solve the problems of low size adjustment adaptability and fixation reliability and inconvenient operation in the prior art, the utility model provides an auxiliary device for detecting the torque of bolt assembly, which can adjust any size within a limited range, improve the adaptability and fixation reliability of the device, and facilitate adjustment.

[0005] The specific scheme of the utility model is as follows.

[0006] An auxiliary device for detecting the torque of bolt assembly includes a fixed block provided with a limiting hole, an adjustable size hexagonal core embedded in the fixed block, six moving assemblies surrounding a hexagonal hole, and a gear turntable provided with a slide rail, the moving assemblies are connected with the slide rail, and the hexagonal hole is arranged in alignment with the limiting hole.

[0007] The hexagonal core is embedded in the fixed block, and the fixed block limits each part of the hexagonal core. When the gear turntable is rotated, the slide rail on the gear turntable drives the position of the six moving assemblies to move, thereby changing the size of the hexagonal hole surrounded by the six moving assemblies, and adjusting the size of the hexagonal core.

[0008] Further, the gear turntable is further connected with an adjusting assembly, the adjusting assembly comprises an adjusting knob and an adjusting gear fixedly connected, the adjusting knob is located outside the fixed block, and the adjusting gear is located inside the fixed block.

[0009] When the adjusting knob outside the fixed block is adjusted, the adjusting knob drives the adjusting gear to rotate, the adjusting gear drives the gear turntable to rotate, and then the size of the hexagonal hole is adjusted.

[0010] Further, the adjusting knob and the adjusting gear are arranged in parallel, and a fixed rod is fixedly connected in the middle, one end of the fixed rod is located at the center of the adjusting knob, and the other end of the fixed rod is located at the center of the adjusting gear.

[0011] The fixed rod fixedly connects the adjusting knob outside the fixed block and the adjusting gear inside the fixed block, and the size of the hexagonal core can be adjusted only by adjusting the adjusting knob outside the fixed block.

[0012] Further, the adjusting knob is disc-shaped, and a handle is fixedly arranged at the edge of the side, away from the adjusting gear, of the adjusting knob. By arranging the handle, the operation of adjusting the adjusting knob is more convenient and labor-saving, and the number of rotations of the adjusting knob can be clearly seen during the adjusting process.

[0013] Further, the gear turntable is arranged perpendicularly to the adjusting gear, one side of the gear turntable is provided with a ring of gear teeth, and the gear teeth are engaged with the adjusting gear. The gear turntable and the adjusting gear are connected in a gear engagement mode, so that the reliability of the adjusting gear driving the gear turntable to rotate is ensured.

[0014] Further, a spiral slide rail is arranged at the side, away from the adjusting gear, of the gear turntable, the moving assembly comprises a moving block and an adjusting block fixedly connected, and the end, connected with the gear turntable, of the adjusting block is provided with a sliding groove matched with the slide rail. The moving assembly is limited in position along the direction of the slide rail by the fixed block, when the gear turntable rotates, the spiral slide rail on the gear turntable rotates with the gear turntable, the adjusting block moves along the direction perpendicular to the slide rail along with the slide rail, drives the moving block to move, and thus the size of the hexagonal hole is adjusted.

[0015] Further, the adjusting block is located in the middle of the moving block and the gear turntable, a protrusion is arranged at the end, away from the gear turntable, of the adjusting block, a groove matched with the protrusion is arranged on the moving block, and the moving block and the adjusting block are fixedly connected through bolts. The adjusting block and the moving block are positioned through the cooperation of the protrusion and the groove, and are fixedly connected through the bolts.

[0016] Further, one end of the moving assembly close to the hexagonal hole is fixed with a limiting table, and the limiting table is located in the limiting hole.

[0017] Further, when the limiting table contacts and extrudes the limiting hole, the stress is uniformly distributed, and the risk of damage to the device is reduced.

[0018] Further, the gear disc is annular and is embedded in the fixed block, and the fixed block limits the gear disc from the center of the gear disc, so that the gear disc does not move in position when the adjusting gear rotates.

[0019] Therefore, the utility model has the following beneficial effects:

[0020] (1) by rotating the adjusting knob, the hexagonal core can be adjusted to any size within a limited range, improving the adaptability and fixing reliability of the device to the bolt assembly, and further improving the detection accuracy;

[0021] (2) when adjusting the size of the device, only the adjusting knob needs to be rotated, the operation is more convenient, and the working efficiency is improved;

[0022] (3) the hexagonal core is embedded in the fixed block, the structural design avoids the risk of falling or losing each part, and the device is convenient to carry. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will be a brief introduction to the drawings needed to be used in the embodiment description, obviously, the drawings in the following description are only the embodiment of the utility model, for those skilled in the art, without creative labor, other drawings can be obtained according to the provided drawings.

[0024] Figure 1 It is the overall structure schematic diagram of the auxiliary device for detecting the torque of bolt assembly of the utility model.

[0025] Figure 2 It is the top view of the auxiliary device for detecting the torque of bolt assembly of the utility model.

[0026] Figure 3 It is the structure schematic diagram of the hexagonal core of the utility model.

[0027] Figure 4 It is the top view of the hexagonal core of the utility model.

[0028] Figure 5 It is the bottom view of the hexagonal core of the utility model.

[0029] In the figure: 1, fixed block, 11, limit hole, 2, hexagonal core, 21, moving block, 211, limit platform, 212, groove, 22, adjusting block, 221, sliding slot, 222, protrusion, 23, gear rotating disc, 231, sliding rail, 232, gear teeth, 24, adjusting gear, 25, adjusting knob, 251, handle, 26, fixed rod, 27, hexagonal hole. DETAILED DESCRIPTION

[0030] The embodiments of the utility model are described in detail below, the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as limiting the utility model.

[0031] As Figure 1 It is the overall structure schematic diagram of the auxiliary device for detecting bolt assembly torque of the utility model, as Figure 2 It is the top view of the auxiliary device for detecting bolt assembly torque of the utility model. The device comprises fixed block 1 and hexagonal core 2 embedded in the inside of fixed block 1, fixed block 1 is cuboid structure, and a circular limit hole 11 is arranged on the top surface, and hexagonal core 2 top is provided with a hexagonal hole 27 with adjustable size, the hexagonal hole 27 is arranged in alignment with the limit hole 11, and the top of the hexagonal hole 27 is located in the inside of the limit hole 11.

[0032] Fixed block 1 adopts the material that is not easy to deform, generally adopts metal material, otherwise fixed block 1 is easy to deform under stress, resulting in the influence on the result of torque detection, even causes the damage of the device. In a preferred embodiment, fixed block 1 is made of steel material, preventing fixed block 1 from deforming under stress when fixed on the bench clamp and working.

[0033] Hexagonal hole 27 is surrounded by six moving blocks 21, and each moving block 21 is provided with a limit platform 211, and the upper surface of the limit platform 211 is flush with the upper surface of fixed block 1. When the limit platform 211 contacts the edge of the limit hole 11, the edge of the limit platform 211 is fitted with the edge of the limit hole 11. When the limit platform 211 contacts and extrudes the limit hole 11, the stress is uniformly distributed, reducing the risk of device damage.

[0034] When the six limit blocks 211 contact and press the edges of the limit holes 11, the hexagonal hole 27 is at the maximum size, which can accommodate the commonly used maximum size of the hexagonal nut; when the six moving blocks 21 contact each other and press, the hexagonal hole 27 is at the minimum size, which is smaller than the size of the commonly used minimum size of the hexagonal nut.

[0035] The hexagonal core 2 further comprises an adjusting knob 25 arranged outside the fixed block 1, which is disc-shaped, located on the side of the fixed block 1, and parallel to the fixed block 1. When the adjusting knob 25 is rotated, the size of the hexagonal hole 27 on the hexagonal core 2 changes with the adjusting knob 25, realizing the adjustment of the size of the hexagonal core 2. In a preferred embodiment, the end of the adjusting knob 25 away from the fixed block 1 is fixedly provided with a handle 251, which is located at the edge of the adjusting knob 25. By providing the handle 251 on the adjusting knob 25, the operation of adjusting the adjusting knob 25 is more convenient and labor-saving, and the number of turns of the adjusting knob 25 during the adjustment process can be clearly seen.

[0036] As Figure 3 It is a structure schematic view of the hexagonal core of the utility model, as Figure 4 It is a top view of the hexagonal core of the utility model, as Figure 5 It is a bottom view of the hexagonal core of the utility model. The hexagonal core 2 is mainly composed of a moving assembly, a gear disc 23 and an adjusting assembly. The moving assembly is arranged on the top of the gear disc 23, and the adjusting assembly is arranged on the bottom of the gear disc 23. The moving assembly comprises a moving block 21 and an adjusting block 22 fixedly connected, and the adjusting assembly comprises an adjusting gear 24 and an adjusting knob 25. The adjusting gear 24 is located inside the fixed block 1, and the adjusting knob 25 is located outside the fixed block 1. The adjusting gear 24 and the adjusting knob 25 are fixedly connected through a fixed rod 26. One end of the fixed rod 26 is located at the center of the adjusting gear 24, and the other end is located at the center of the adjusting knob 25. The fixed rod 26 fixedly connects the adjusting knob 25 outside the fixed block 1 and the adjusting gear 24 inside the fixed block 1. By adjusting the adjusting knob 25 outside the fixed block 1, the size of the hexagonal core 2 can be adjusted. In a preferred embodiment, the fixed rod 26 is composed of two parts, one part is fixedly connected with the adjusting gear 24, and the other part is fixedly connected with the adjusting knob 25. In the assembly process, the end faces of the two parts of the fixed rod 26 are fixedly connected. In this embodiment, the fixed rod 26 is designed as two parts, which facilitates the assembly of the adjusting assembly on the fixed block 1, and reduces the assembly difficulty.

[0037] The gear disc 23 is annular, and a circular hole in the middle of the gear disc 23 is aligned with the hexagonal hole 27. The gear disc 23 is embedded in the fixed block 1, and the fixed block 1 limits the gear disc 23 from the center of the gear disc 23 to ensure that the gear disc 23 does not move in position when the adjusting assembly rotates. The contact end of the gear disc 23 with the adjusting assembly is provided with a circle of gear teeth 232, i.e. the gear teeth 232 are located at the bottom of the gear disc 23. The gear disc 23 is perpendicular to the adjusting gear 24, and the gear teeth 232 are engaged with the adjusting gear 24. When the adjusting knob 25 is rotated from the outside of the fixed block 1, the adjusting gear 24 rotates with the adjusting knob 25. Since the gear disc 23 is engaged with the adjusting gear 24, the rotation of the adjusting gear 24 drives the rotation of the gear disc 23.

[0038] The contact end of the gear disc 23 with the moving assembly is provided with a spiral slide rail 231, i.e. the slide rail 231 is located at the top of the gear disc 23, and the gear disc 23 is connected to the moving assembly through the slide rail 231. The adjusting block 22 in the moving assembly is located between the moving block 21 and the gear disc 23, and the top of the adjusting block 22 is connected to the moving block 21 and the bottom of the adjusting block 22 is connected to the gear disc 23. The cross section of the adjusting block 22 is in the shape of a "cross", and the top of the adjusting block 22 is provided with a protrusion 222. The bottom of the moving block 21 is provided with a groove 212 matched with the protrusion 222 on the adjusting block 22, and the positioning between the adjusting block 22 and the moving block 21 is realized through the cooperation of the protrusion 222 and the groove 212. The moving block 21 and the adjusting block 22 are fixedly connected through bolts. In a preferred embodiment, two bolt through holes are provided on the moving block 21, and two threaded holes are provided on the corresponding position of the adjusting block 22. After the positioning operation of the moving block 21 and the adjusting block 22, the two bolts are inserted into the threaded holes of the adjusting block 22 through the bolt through holes of the moving block 21 and are tightened, realizing the fixed connection between the adjusting block 22 and the moving block 21.

[0039] The bottom of the adjusting block 22 is provided with a slide groove 221 matched with the slide rail 231 at the top of the gear disc 23. In a preferred embodiment, four parallel slide grooves 221 are provided at the bottom of each adjusting block 22, and the middle two slide grooves 221 are located on the slide rail 231. When the gear disc 23 rotates, the slide rail 231 at the top of the gear disc 23 also rotates with the gear disc 23. Due to the limiting effect of the fixed block 1 on the moving assembly, the moving assembly does not move in the direction of rotation of the gear disc 23, and due to the spiral shape of the slide rail 231, the moving assembly moves in the direction perpendicular to the slide rail 231 until the moving block 21 moves to the limit position.

[0040] The top of each moving block 21 is provided with a limiting table 211, which is located at one end of the moving block 21 close to the hexagonal hole 27 in a preferred embodiment, one side of the limiting table 211 is flush with the edge of the hexagonal hole 27, and the other side is in the form of a circular arc matched with the limiting hole 11, and the top of the limiting table 211 is flush with the surface of the fixed block 1.

[0041] When the limiting table 211 contacts and presses the limiting hole 11 on the fixed block 1, the size of the hexagonal hole 27 is maximum, at this time, the moving block 21 cannot continue to move in the original moving direction, and the adjusting block 22 fixedly connected with the moving block 21 also stops moving, and since the sliding groove 221 on the adjusting block 22 stops moving, the spiral sliding rail 231 matched with the sliding groove 221 also cannot rotate in the original rotating direction, and then the gear turntable 23 also cannot rotate in the original rotating direction, under the action of the gear turntable 23, the adjusting gear 24 meshed with the gear turntable 23 stops rotating, so that the adjusting knob 25 cannot continue to rotate in the original rotating direction, and can only rotate in the opposite direction, at this time, it is the maximum limit of the adjusting size of the hexagonal hole 27, and the maximum size of the hexagonal hole 27 can accommodate the largest commonly used hexagonal nut. When the adjusting knob 25 rotates in the opposite direction, the size of the hexagonal hole 27 gradually decreases.

[0042] When the six moving blocks 21 contact and press each other, the size of the hexagonal hole 27 is minimum, at this time, the moving block 21 cannot continue to move in the original moving direction, and the adjusting block 22 fixedly connected with the moving block 21 also stops moving, and since the sliding groove 221 on the adjusting block 22 stops moving, the spiral sliding rail 231 matched with the sliding groove 221 also cannot rotate in the original rotating direction, and then the gear turntable 23 also cannot rotate in the original rotating direction, under the action of the gear turntable 23, the adjusting gear 24 meshed with the gear turntable 23 stops rotating, so that the adjusting knob 25 cannot continue to rotate in the original rotating direction, and can only rotate in the opposite direction, at this time, it is the maximum limit of the adjusting size of the hexagonal hole 27, and the maximum size of the hexagonal hole 27 can accommodate the largest commonly used hexagonal nut. When the adjusting knob 25 rotates in the opposite direction, the size of the hexagonal hole 27 gradually decreases.

[0043] In a preferred embodiment, the auxiliary device for detecting the torque of a bolt assembly is small in overall volume, regular in shape, convenient to carry and convenient to fix by a bench clamp.

[0044] The working process of the auxiliary device for detecting the torque of a bolt assembly is as follows.

[0045] The auxiliary device is fixed on the bench clamp, a bolt assembly to be tested is sleeved with a nut, the adjusting knob 25 of the auxiliary device is rotated, the size of the hexagonal hole 27 of the auxiliary device is adjusted to be larger than the size of the nut of the bolt assembly, the nut end of the bolt assembly is placed into the hexagonal hole 27, and then the adjusting knob 25 of the auxiliary device is rotated in the reverse direction until the limit is reached, at this time, the size of the hexagonal hole 27 is adjusted to correspond to the size of the nut of the bolt assembly, and the fixing of the bolt assembly is completed. The torque wrench corresponding to the type of hexagonal sleeve head is selected and fixed on the nut, the torque wrench is installed, and the torque of the bolt assembly is detected. When the torque of the bolt assembly is detected, the nut of the bolt assembly exerts force on the moving block 21, but the position of the moving block 21 is fixed due to the limiting effect of the sliding rail 231 on the adjusting block 22, so that the auxiliary device continuously fixes the nut of the bolt assembly, and the bolt assembly can also be taken off the auxiliary device at will. The auxiliary device for detecting the torque of the bolt assembly of the utility model can change the size of the hexagonal hole 27 only by rotating the adjusting knob 25, thereby improving the fixing reliability of the bolt assembly.

[0046] The auxiliary device for detecting the torque of the bolt assembly of the utility model can adjust the hexagonal core 2 to any size within a limited range by rotating the adjusting knob 25, including the size of commonly used hexagonal nuts such as M4, M5, M6, etc., thereby improving the adaptability of the device and not being limited to the nuts of a few specific sizes of bolt assemblies, and avoiding the influence of size errors on torque detection, improving the fixing reliability of the bolt assembly and thereby improving the detection accuracy; when adjusting the size, only the adjusting knob 25 needs to be rotated, without complex adjustment operations, so that the operation is more convenient, thereby improving the work efficiency when detecting the torque of the bolt assembly; the hexagonal core 2 is embedded in the fixed block 1, the structural design avoids the risk of falling or losing each part, and the overall size of the device is small, so that the device is convenient to carry.

[0047] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any way. Any simple modification, change and equivalent structural transformation of the above embodiment according to the technical essence of the utility model still belong to the protection scope of the technical scheme of the utility model.

Claims

1. An auxiliary device for detecting the torque of a bolt assembly, characterized in that, The fixing block is provided with a limiting hole, and a hexagonal core with adjustable size is embedded in the fixing block, the hexagonal core comprises six moving assemblies surrounding a hexagonal hole and a gear rotating disc provided with a slide rail, the moving assemblies are connected with the slide rail, and the hexagonal hole is arranged in alignment with the limiting hole.

2. An auxiliary device for detecting the torque of a bolt assembly according to claim 1, characterized in that The gear rotating disc is further connected with an adjusting assembly, the adjusting assembly comprises an adjusting knob and an adjusting gear fixedly connected, the adjusting knob is located outside the fixing block, and the adjusting gear is located inside the fixing block.

3. An auxiliary device for detecting the torque of a bolt assembly according to claim 2, characterized in that The adjusting knob and the adjusting gear are arranged in parallel, and a fixing rod is fixedly connected between the adjusting knob and the adjusting gear, one end of the fixing rod is located at the center of the adjusting knob, and the other end of the fixing rod is located at the center of the adjusting gear.

4. An auxiliary device for detecting the torque of a bolt assembly according to claim 3, characterized in that The adjusting knob is disc-shaped, and a handle is fixedly arranged at the edge of the side of the adjusting knob, away from the adjusting gear.

5. The supplemental device of claim 2, wherein, The gear rotating disc is arranged perpendicularly to the adjusting gear, one side of the gear rotating disc is provided with a ring of gear teeth, and the gear teeth are engaged with the adjusting gear.

6. An auxiliary device for detecting the torque of a bolt assembly according to claim 5, characterized in that The gear rotating disc is provided with a spiral slide rail on the side, away from the adjusting gear, the moving assembly comprises a moving block and an adjusting block fixedly connected, and the adjusting block is provided with a slide groove matched with the slide rail at the connecting end of the gear rotating disc.

7. An auxiliary device for detecting the torque of a bolt assembly according to claim 6, characterized in that The adjusting block is located between the moving block and the gear rotating disc, a protrusion is arranged at the end of the adjusting block, away from the gear rotating disc, a groove is arranged on the moving block and matched with the protrusion, and the moving block and the adjusting block are fixedly connected through bolts.

8. The supplemental device of claim 1, wherein, The moving assembly is fixedly provided with a limiting table at the end close to the hexagonal hole, and the limiting table is located in the limiting hole.

9. An auxiliary device for detecting the torque of a bolt assembly according to claim 8, characterized in that When the limiting table is in contact with the edge of the limiting hole, the edges of the six limiting tables are fitted with the edge of the limiting hole.

10. An auxiliary device for detecting the torque of a bolt assembly according to any one of claims 1-9, characterized in that, The gear rotating disc is annular and embedded in the fixing block.

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