Special-shaped screw connecting assembly

Abstract

The utility model relates to the technical field of mechanical connecting pieces, in particular to a special-shaped screw connecting assembly which comprises a screw and a first nut, the first nut is assembled on the screw and connected with the screw in a threaded screwing mode, a second nut is assembled at the right end of the screw in a threaded screwing mode, and a groove is formed in the annular face of the screw. By means of the design, the problems that an existing screw connecting assembly is simple in structure, a nut is loosened or even disengaged due to equipment vibration and the like after being used for a long time, the nut on the screw is rusted in a humid environment, and the service life of the screw is affected are solved. And disassembly is not easy. According to the screw connecting assembly, the double-nut design is adopted, the double nuts can be locked and disassembled, the connecting stability between the screw connecting assembly and mechanical equipment is effectively improved, meanwhile, installation and disassembly are convenient, convenience is provided for later equipment repair and maintenance, and the complex and changeable mechanical equipment configuration requirements can be better met.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical connectors, in particular to a special-shaped screw connection assembly. Background Art

[0002] There are many types of mechanical equipment. When the mechanical equipment is running, some of its parts or even the mechanical equipment itself can perform different forms of mechanical movement. Mechanical equipment is composed of drive devices, speed change devices, transmission devices, working devices, braking devices, protective devices, lubrication systems, cooling systems and other parts.

[0003] In the configuration of mechanical equipment, the screw connection assembly is an important connection component, and its stability directly affects the operating efficiency and safety of the mechanical equipment. However, most of the existing screw connection assemblies have a simple design structure. After long-term use, the nuts will loosen or even fall off due to equipment vibration and other reasons. The lack of stability affects the normal operation of the equipment. In addition, in a humid environment, the nuts on the screws will rust and are difficult to disassemble, which brings inconvenience to the subsequent equipment repair and maintenance, and cannot meet the complex and changeable mechanical equipment configuration requirements. Therefore, how to improve the stability of the screw connection assembly and facilitate installation and disassembly has become a problem that needs to be solved urgently. Utility Model Content

[0004] In view of the existing deficiencies, the utility model provides a special-shaped screw connection assembly, which solves the problems raised in the above-mentioned background technology. The utility model adopts a double nut design, and the double nuts can be locked and disassembled, which effectively improves the connection stability between the screw connection assembly and the mechanical equipment. At the same time, it is convenient for installation and disassembly, provides convenience for subsequent equipment repair and maintenance, and can better meet the complex and changeable mechanical equipment configuration requirements.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A special-shaped screw connection assembly comprises a screw and a nut. The nut is assembled on the screw and is screwed together with the screw by means of a thread. The right end of the screw is assembled with a nut by means of a thread. A groove is provided inside the annular surface of the screw. A plurality of groups of limit teeth are equidistantly arranged on the front and rear sides of the inner wall of the groove. A locking assembly is arranged between the limit teeth.

[0007] Furthermore, gaskets are fixedly provided on the inner side surfaces of the nut 1 and the nut 2, and a plurality of groups of anti-slip protrusions are evenly arranged on the surface of the gaskets.

[0008] Furthermore, a first positioning pin hole is formed through the inside of the screw rod near the right end, a second positioning pin hole is formed through the inside of the second nut, and pins are inserted into the first positioning pin hole and the second positioning pin hole.

[0009] Furthermore, the locking assembly is composed of a limit baffle, a locking rod and a card plate. The locking rod is inserted into the groove, and two groups of arc-shaped card plates are arranged on the front and rear sides of the locking rod near the right end, and the spacing between the two adjacent groups of card plates is greater than the width of the limit tooth. A limit baffle with a vertical structure is fixed to the left end of the locking rod.

[0010] Furthermore, a paddle is fixedly provided on the left side surface of the limit baffle.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The utility model adopts a double nut design, and the double nuts can be locked and disassembled, which effectively improves the connection stability between the screw connection assembly and the mechanical equipment. At the same time, it is convenient for installation and disassembly, provides convenience for later equipment repair and maintenance, and can better meet the complex and changeable mechanical equipment configuration requirements.

[0013] 2. In the utility model, washers are fixed on the inner side surfaces of nut 1 and nut 2. The washers can increase the contact surface between the nut and the device during use, evenly disperse the extrusion force generated by the nut, and effectively prevent the device contact surface from being deformed and damaged due to concentrated force. Multiple groups of anti-skid protrusions are evenly arranged on the surface of the washers. The multiple groups of anti-skid protrusions can increase the friction between the nut and the device contact surface, provide a more stable connection force, reduce the looseness between the nut and the device, and improve the connection reliability.

[0014] 3. A locating pin hole 1 is penetrated through the inside of the screw near the right end, and a locating pin hole 2 is penetrated through the inside of the nut 2. Pins are inserted into the locating pin hole 1 and the locating pin hole 2. By inserting the pins into the locating pin hole 1 and the locating pin hole 2, the nut 2 can be locked to ensure the accurate position of the nut 2 on the screw, improve the vibration resistance and impact resistance of the connection, and prevent the nut 2 from loosening and displacement during assembly or use, thereby ensuring the accuracy and stability of the connection, and facilitating disassembly during later equipment maintenance.

[0015] 4. The locking assembly can cooperate with the limiting teeth in the groove to achieve the limiting locking of nut 1, which can provide additional locking force after nut 1 is tightened, helping to prevent the nut from loosening or falling off due to equipment vibration or other external factors. When the lock rod is inserted into the groove, the card plate will be stuck between the limiting teeth to form a firm locking state, and the limiting baffle will fit on the left end face of nut 1, and the limiting baffle will lock and limit nut 1 from the left side, effectively preventing nut 1 from loosening and slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 It is a schematic diagram of the disassembled structure of the utility model.

[0018] Figure 3 It is a structural schematic diagram of the screw in the utility model.

[0019] Figure 4 It is a structural schematic diagram of the locking component in the utility model.

[0020] Figure 5 It is a structural schematic diagram of nut 2 in the utility model.

[0021] In the figure: 1. Nut 1; 2. Screw; 3. Nut 2; 4. Washer; 41. Anti-slip protrusion; 5. Pin; 6. Groove; 7. Limiting tooth; 8. Locking assembly; 81. Pick; 82. Limiting baffle; 83. Locking rod; 84. Card; 9. Positioning pin hole 1; 10. Positioning pin hole 2. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example:

[0024] like Figures 1 to 5 As shown, a special-shaped screw connection assembly includes a screw 2 and a nut 1. The nut 1 is assembled on the screw 2 and is connected to the screw 2 by threaded engagement. The right end of the screw 2 is assembled with a nut 2 3 by threaded engagement. A groove 6 is opened inside the annular surface of the screw 2. A plurality of groups of limit teeth 7 are equidistantly arranged on the front and rear sides of the inner wall of the groove 6. A locking assembly 8 is arranged between the limit teeth 7. This design solves the problem that most of the existing screw 2 connection assemblies have a simple design structure. After long-term use, the nut will loosen or even fall off due to equipment vibration and other reasons, and the stability is insufficient, affecting the normal operation of the equipment. In a humid environment, the nut on the screw 2 will rust and is not easy to disassemble, which brings inconvenience to the later equipment repair and maintenance and cannot meet the complex and changeable mechanical equipment configuration requirements.

[0025] The inner side surfaces of the nut 1 and the nut 2 3 are fixed with a gasket 4, which can increase the contact surface between the nut and the device during use, evenly disperse the extrusion force generated by the nut, and effectively prevent the device contact surface from being deformed and damaged due to concentrated force. The surface of the gasket 4 is evenly provided with multiple groups of anti-skid protrusions 41, which can increase the friction between the nut and the device contact surface, provide a more stable connection force, reduce the looseness between the nut and the device, and improve the connection reliability.

[0026] A locating pin hole 9 is penetrated through the inside of the screw rod 2 near the right end, and a locating pin hole 2 10 is penetrated through the inside of the nut 2 3. Pins 5 are inserted into the locating pin holes 1 9 and 10. By inserting the pin 5 into the locating pin holes 1 9 and 10, the nut 2 3 can be locked to ensure the accurate position of the nut 2 3 on the screw rod 2, improve the vibration resistance and impact resistance of the connection, and prevent the nut 2 3 from loosening and displacement during assembly or use, thereby ensuring the accuracy and stability of the connection and facilitating disassembly during later equipment maintenance.

[0027] The locking assembly 8 is composed of a limit baffle 82, a locking rod 83 and a card plate 84. The locking rod 83 is inserted into the groove 6. Two groups of arc-shaped card plates 84 are arranged near the right end on the front and rear sides of the locking rod 83, and the spacing between the two adjacent groups of card plates 84 is greater than the width of the limit clamping teeth 7. The left end of the locking rod 83 is fixed with a limit baffle 82 of a vertical structure. The locking assembly 8 provided in this design can cooperate with the limit clamping teeth 7 in the groove 6 to achieve the limit locking of the nut 1, and can provide additional locking force after the nut 1 is tightened, which helps to prevent the nut from loosening or falling off due to equipment vibration or other external factors. When the locking rod 83 is inserted into the groove 6, the card plate 84 will be stuck between the limit clamping teeth 7 to form a firmly locked state. At the same time, the limit baffle 82 will fit on the left end face of the nut 1, and the nut 1 is locked and limited from the left side through the limit baffle 82, which effectively prevents the nut 1 from loosening and slipping off.

[0028] A paddle 81 is fixedly provided on the left side surface of the limit baffle 82. The paddle 81 is provided to facilitate the staff to operate the locking assembly 8. The staff can clamp the limit baffle 82 with their hands or other tools, and then insert the locking assembly 8 into the groove 6 to lock the nut 1, thereby improving the convenience of operation.

[0029] The working principle of the special-shaped screw connection assembly is as follows: first, the nut 23 is assembled on the right end of the screw 2 by threaded engagement, and the pin 5 is inserted into the positioning pin hole 19 inside the screw 2 and the positioning pin hole 10 inside the nut 23 to lock it. In this way, the accurate position of the nut 23 on the screw 2 can be ensured, the vibration resistance and impact resistance of the connection can be improved, and the nut 23 can be prevented from loosening and displacement during assembly or use. Then the screw 2 is installed on the mechanical equipment, and the nut 1 is assembled on the screw 2 from the other end by threaded engagement, and locked by the locking assembly 8. The locking assembly 8 is composed of a limit baffle 82, a locking rod 83 and a clamping plate 84. The locking rod 83 is inserted into the groove 6 inside the annular surface of the screw 2, and the clamping plate 84 cooperates with the limit clamping teeth 7 on the inner wall of the groove 6 to form a firmly locked state. At the same time, the limit baffle 82 is attached to the left end face of the nut 1, and it is locked and limited from the left side, effectively preventing the nut 1 from loosening and slipping. In order to facilitate the staff to operate the locking assembly 8, a paddle 81 is fixed on the left side of the limit baffle 82; when the special-shaped screw connection assembly needs to be disassembled, first pull out the pin 5 to release the lock on the nut 2 3, then remove the nut 2 3 from the screw 2, and then remove the screw 2 connecting nut 1 from the mechanical equipment.

[0030] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A special-shaped screw connection assembly, comprising a screw (2) and a nut (1), characterized in that: The nut 1 (1) is assembled on the screw rod (2) and is screwed together with the screw rod (2) by means of a thread. The right end of the screw rod (2) is screwed together with the nut 2 (3). A groove (6) is provided inside the annular surface of the screw rod (2). A plurality of groups of limiting teeth (7) are equidistantly arranged on the front and rear sides of the inner wall of the groove (6). A locking assembly (8) is arranged between the limiting teeth (7).

2. The special-shaped screw connection assembly according to claim 1, characterized in that: A gasket (4) is fixedly provided on the inner side surfaces of the nut 1 (1) and the nut 2 (3), and a plurality of groups of anti-slip protrusions (41) are evenly arranged on the surface of the gasket (4).

3. The special-shaped screw connection assembly according to claim 1, characterized in that: A first positioning pin hole (9) is formed through the inside of the screw rod (2) near the right end, and a second positioning pin hole (10) is formed through the inside of the second nut (3). Pins (5) are inserted into the first positioning pin hole (9) and the second positioning pin hole (10).

4. The special-shaped screw connection assembly according to claim 1, characterized in that: The locking assembly (8) is composed of a limit baffle (82), a locking rod (83) and a clamping plate (84); the locking rod (83) is inserted into the groove (6); two groups of arc-shaped clamping plates (84) are arranged on the front and rear sides of the locking rod (83) near the right end, and the spacing between two adjacent groups of clamping plates (84) is greater than the width of the limit clamping teeth (7); and a limit baffle (82) with a vertical structure is fixed to the left end of the locking rod (83).

5. The special-shaped screw connection assembly according to claim 4, characterized in that: A paddle (81) is fixedly provided on the left side surface of the limit baffle (82).

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