Nut for torque induction fastening machine

Abstract

The utility model relates to the technical field of fasteners, in particular to a nut for a torque induction fastening machine. The anti-loosening nut comprises a threaded seat, a threaded ring is arranged on the outer wall of the threaded seat, a screwing plate is rotatably connected to the bottom of the threaded ring, a nut shell is fixedly connected to the lower surface of the screwing plate, an anti-loosening assembly is arranged in the nut shell, and the nut is fixed after being installed through the anti-loosening assembly. And meanwhile, the torque is sensed through the anti-loosening assembly. Through the pushing plate in the anti-loosening assembly, when the threaded seat of the nut is installed to the bottom and makes contact with the bolt, the bolt extrudes the pushing plate, the pushing plate slides upwards, the wedge-shaped sliding block is pushed to move inwards on the transverse groove when the pushing plate slides upwards, and the wedge-shaped sliding block fixes the bolt inwards.

Description

Technical Field

[0001] The utility model relates to the field of fasteners, and more specifically, to a nut for a torque-sensing fastening machine. Background Art

[0002] A nut is a common fastener, usually used together with a bolt or a screw rod to connect two or more objects. The main function of the nut is to provide a threaded hole that matches the thread of the bolt or the screw rod. By rotating the nut, it can move along the axis of the bolt or the screw rod, thereby achieving a tight connection between the two objects.

[0003] For mechanical nuts, there are many existing technologies, such as:

[0004] Chinese Patent Application No. CN117489689A discloses an invisible magnetic-opening anti-loosening nut kit, which includes a nut, a check screw, an inclined-tooth washer, a spring, a spring pressing piece, and a riveting piece; a limiting groove is arranged outside the check screw, and an inclined-tooth washer, a spring, and a riveting piece are arranged inside the nut. A first inclined-tooth annular array that cooperates with the inclined-tooth washer is arranged in the inner cavity of the nut, and the spring is used to fit the inclined-tooth washer and the first inclined-tooth annular array; the inclined-tooth washer has magnetism; the riveting piece is made of nylon material, and the riveting piece is in interference fit with the check screw. This invisible magnetic-opening anti-loosening nut kit has the advantages of compact structure, convenient installation and disassembly, and excellent anti-loosening performance.

[0005] However, in the existing technology, during the installation process of the nut, it is necessary to judge the torque distance by oneself, which is not convenient for automatic operation. At the same time, different judgments are required for different equipment. At the same time, the nut may become loose when the torque is too large. And in a humid environment, the assembled bolt and nut may rust, and then the two may stick together, making it difficult to disassemble by rotating the nut or the bolt.

[0006] In view of this, we propose a nut for a torque-sensing fastening machine. Summary of the Utility Model

[0007] The purpose of the present utility model is to solve the above-mentioned drawbacks and provide a nut for a torque-sensing fastening machine;

[0008] To achieve the above purpose, the present utility model provides a nut for a torque-sensing fastening machine, which includes a threaded seat. A thread ring is provided on the outer wall of the threaded seat. A screwing plate is rotatably connected to the bottom of the thread ring. A nut housing is fixedly connected to the lower surface of the screwing plate. An anti-loosening component is arranged inside the nut housing. After the nut is installed through the anti-loosening component, it is fixed, and at the same time, the torque is sensed through the anti-loosening component.

[0009] As a further improvement of the technical solution, the anti-loosening component includes two nut inner shells. A push plate is slidably connected to the inner wall of the nut inner shell. A sliding groove is provided between the nut inner shell and the threaded seat. The push plate is adapted to the sliding groove. A first support plate is slidably connected to the edge of the upper surface inner wall of the push plate. A transverse groove is penetrated near the center of the first support plate. A plurality of wedge-shaped sliders are slidably connected to the inside of the transverse groove. The inner side of the wedge-shaped slider is attached to the second support plate. The second support plate is parallel to the first support plate.

[0010] As a further improvement of the technical solution, a limiting block is fixedly connected to one side of the splicing part of the nut inner shell. A limiting hole is provided on the other side of the nut inner shell. The limiting hole is adapted to the limiting block.

[0011] As a further improvement of the technical solution, a torque sensor is fixedly connected above the second support plate. The outer wall of the torque sensor is attached to the nut outer shell.

[0012] As a further improvement of the technical solution, a screwing pit is provided near the hexagon of the screwing plate.

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

[0014] In the nut for the torque-sensing fastening machine, through the push plate inside the anti-loosening component, when the threaded seat of the nut is installed to the bottom and contacts the bolt, the bolt presses the push plate, and the push plate slides upward. When sliding upward, the wedge-shaped slider moves inward on the transverse groove. Thus, when the nut is installed to the bottom and contacts the bolt, the wedge-shaped slider fixes the bolt inward to prevent loosening. At the same time, for the torque sensor inside the relaxation component, when the elastic element inside the torque sensor is subjected to a torque, it will deform, and then the torque can be calculated by observing the elastic element. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a schematic diagram of the anti-loosening component of the present utility model;

[0017] Figure 3 is a schematic cross-sectional view of the anti-loosening component of the present utility model;

[0018] The meanings of each label in the figure are as follows:

[0019] 1. Threaded seat; 11. Thread ring;

[0020] 2. Screwing plate; 21. Screwing pit; 22. Nut outer shell;

[0021] 3. Locking component; 30. Inner nut shell; 31. Wedge-shaped slider; 32. Pushing plate; 33. Limit hole; 34. Limit block; 35. Sliding groove; 36. Horizontal groove; 37. First support plate; 38. Second support plate; 39. Torque sensor. Detailed implementation mode

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] A nut is a common fastener, usually used together with a bolt or screw rod to connect two or more objects. The main function of the nut is to provide a threaded hole that matches the thread of the bolt or screw rod. By rotating the nut, it can move along the axis of the bolt or screw rod, thereby achieving a tight connection between the two objects.

[0024] Please refer to Figures 1 - 3 As shown in the figure, this embodiment provides a nut for a torque-sensing fastening machine, including a threaded seat 1. A thread ring 11 is provided on the outer wall of the threaded seat 1. A screwing plate 2 is rotatably connected to the bottom of the thread ring 11. A nut shell 22 is fixedly connected to the lower surface of the screwing plate 2. A locking component 3 is arranged inside the nut shell 22. After the nut is installed through the locking component 3, it is fixed, and at the same time, the torque is sensed through the locking component 3.

[0025] The improvement of this embodiment lies in that when the nut is installed on the bolt, the threaded seat 1 fits the thread on the bolt and rotates downward for connection. When the threaded seat 1 fits the bottom of the bolt, the bolt squeezes the bottom of the locking component 3, and the locking component 3 fixes the bolt, realizing the connection between the nut and the bolt to prevent loosening. At the same time, as the bolt rotates inside the nut, when the bolt rotates, it squeezes the inside of the locking component 3, realizing the induction calculation of the torque of the bolt.

[0026] Considering that after the nut installation is completed, the nut and the bolt may become loose due to long-term vibration. Therefore, the anti-loosening component 3 includes two nut inner shells 30. A push plate 32 is slidably connected to the inner wall of the nut inner shell 30. A sliding groove 35 is provided between the nut inner shell 30 and the threaded seat 1. The push plate 32 is adapted to the sliding groove 35. A first support plate 37 is slidably connected to the edge of the upper surface inner wall of the push plate correlates with the torque size, thereby calculating the torque.

[0027] Considering that during the installation of the two half nut inner shells 30, there may be a situation of shaking, which may cause the possibility of different threaded connections between the bolt and the threaded seat 1. Therefore, a limiting block 34 is fixedly connected to one side of the splicing part of the nut inner shell 30, and a limiting hole 33 is opened on the other side of the nut inner shell 30. The limiting hole 33 is adapted to the limiting block 34. The nut inner shell 30 can be fixed by inserting the limiting block 34 into the limiting hole 33.

[0028] Considering that during the installation process of the nut, it is necessary to judge the torque distance by itself, which is not convenient for automatic operation. At the same time, different judgments are required for different equipment. Therefore, a torque sensor 39 is fixedly connected above the second support plate 38. The outer wall of the torque sensor 39 is in contact with the nut housing 22. When the elastic element inside the torque sensor 39 is subjected to a torque, it will deform, resulting in a change in the resistance value of the strain gauge. This resistance change is proportional to the torque size, thereby calculating the torque.

[0029] Considering that in a humid environment, the assembled bolt and nut may rust, and then the two may stick together, making it difficult to disassemble by rotating the nut or the bolt. Therefore, a wrenching pit 21 is opened near the hexagon of the wrenching plate 2, and the nut housing 22 is disassembled by using the wrenching pit 21, avoiding the situation that the two stick together and it is difficult to disassemble by rotating the nut or the bolt.

[0030] When the nut of the torque-sensing fastening machine of the present utility model is specifically used, through the push plate 32 inside the anti-loosening component 3, when the thread seat 1 of the nut is installed to the bottom and contacts the bolt, the bolt presses the push plate 32, and the push plate 32 slides upward. When sliding upward, the wedge-shaped slider 31 moves inward on the transverse groove 36. Thus, when the nut is installed to the bottom and contacts the bolt, the wedge-shaped slider 31 fixes the bolt inward to prevent loosening. At the same time, for the torque sensor 39 inside the relaxation component 3, when the elastic element inside the torque sensor 39 is subjected to torque, it will deform, and then the torque is calculated by observing the elastic element.

[0031] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only the preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A nut for a torque-sensing fastening machine, comprising a threaded seat (1), characterized in that: The outer wall of the threaded seat (1) is provided with a thread ring (11). A screwing plate (2) is rotatably connected to the bottom of the thread ring (11). A nut housing (22) is fixedly connected to the lower surface of the screwing plate (2). An anti-loosening component (3) is arranged inside the nut housing (22). After the nut is installed through the anti-loosening component (3), it is fixed, and at the same time, the torque is sensed through the anti-loosening component (3).

2. The nut for a torque-sensing fastening machine according to claim 1, characterized in that: The anti-loosening component (3) includes two nut inner shells (30). A pushing plate (32) is slidably connected to the inner wall of the nut inner shell (30). A sliding groove (35) is arranged between the nut inner shell (30) and the threaded seat (1). The pushing plate (32) is adapted to the sliding groove (35). A first support plate (37) is slidably connected to the edge of the upper surface inner wall of the pushing plate (32). A transverse groove (36) is penetrated and opened near the center of the first support plate (37). A plurality of wedge-shaped sliders (31) are slidably connected inside the transverse groove (36). The inner side of the wedge-shaped slider (31) is in contact with the second support plate (38). The second support plate (38) is parallel to the first support plate (37).

3. The nut for a torque-sensing fastening machine according to claim 2, characterized in that: A limiting block (34) is fixedly connected to one side of the splicing part of the nut inner shell (30). A limiting hole (33) is opened on the other side of the nut inner shell (30). The limiting hole (33) is adapted to the limiting block (34).

4. The nut for a torque sensing fastening machine according to claim 2, wherein: A torque sensor (39) is fixedly connected above the second support plate (38). The outer wall of the torque sensor (39) is in contact with the nut housing (22).

5. The nut for a torque-sensing fastening machine according to claim 1, characterized in that: A screwing pit (21) is opened near the hexagon of the screwing plate (2).

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