Lock nut for rail transit link

Abstract

The utility model relates to the technical field of rail transit link, and provides a locknut for rail transit link, which comprises a fixing plate. The bolt body is fixedly connected to the center of the top of the fixing plate. According to the utility model, firstly, the fixing plate and the bolt body are integrally inserted into a connecting piece needing to be connected, at the moment, one nut body is located at the position, close to the fixing plate, of the outer surface of the bolt body, and the anti-seismic gasket and the rubber gasket on one side of the nut body are placed in advance; then the surface of the bolt body is sleeved with the other nut body, the other nut body slowly and vertically moves downwards through the first lead threads on the surface of the bolt body, and meanwhile one nut body gradually and vertically moves towards the connecting piece along the first lead threads at the other end of the bolt body; and when the two nut bodies gradually move to the surface of the second lead thread, the nut can be better subjected to anti-loosening treatment, and the anti-loosening effect of the nut is improved.

Description

Technical Field

[0001] This utility model relates to the field of rail transit connection technology, and in particular to an anti-loosening nut for rail transit connections. Background Technology

[0002] Lock nuts, also known as anti-loosening nuts, are a common type of fastening nut. They include mechanical locking mechanisms, riveting locking mechanisms, friction locking mechanisms, and structural locking mechanisms.

[0003] In the prior art, such as Chinese Patent No. CN219865817U, a locking nut for rail transit connections is disclosed, relating to the field of nuts. It includes a nut body, a main screw welded vertically downwards to the bottom surface of the nut body, a compression nut fitted onto the outer side of the main screw, a mating disc fitted horizontally to the outer side of the main screw, a concentric through groove on the top surface of the mating disc, a mating nut welded to the bottom surface of the mating disc, a fixing screw hole vertically formed on the inner side of the mating nut, a fastening screw hole vertically formed on the inner side of the compression nut, a compression base welded vertically downwards to the bottom surface of the compression nut, and a mating screw groove on the side of the compression base. The nut body is hexagonal in shape, and the top of the main screw is fixedly positioned at the center of the bottom surface of the nut body. The semi-circular structure creates a locking effect, while the eccentric compression further tightens and prevents rotation.

[0004] While the above solutions have the advantages mentioned above, their disadvantages are that when used in traditional rail transit connection anti-loosening nuts, the high speed of the train on the track causes the entire track to vibrate, resulting in the nuts loosening. This makes it impossible to effectively prevent the nuts from loosening, reducing their anti-loosening effect. Furthermore, the inability to utilize new materials to extend their service life and improve corrosion resistance reduces the practicality of the anti-loosening nuts. Utility Model Content

[0005] The purpose of this invention is to solve the problem that in the existing technology, when using anti-loosening nuts for rail transit connections, the high speed of the train on the track causes the entire track to vibrate, causing the nuts to loosen and making it impossible to effectively prevent loosening, thus reducing the anti-loosening effect of the nuts.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: an anti-loosening nut for rail transit connections, comprising:

[0007] Fixing plate;

[0008] The bolt body is fixedly connected to the top center of the fixing plate, and the outer surface of the bolt body is provided with a first lead thread near the top.

[0009] Second lead thread, which is opened on the outer surface of the bolt body, and the pitch of the second lead thread is smaller;

[0010] Two nut bodies are threadedly connected to the outer surface of the bolt body;

[0011] A plurality of square anti-skid blocks are fixedly connected to one side of the outer surface of the two nut bodies;

[0012] Two anti-vibration washers are arranged on one side of the outer surface of the two nut bodies, and one side of the outer surface of the two anti-vibration washers is provided with a rubber washer.

[0013] As a preferred embodiment, the pitch of the first lead thread is set to be larger, the rubber washer is annular, the inner wall of the rubber washer is movably sleeved on the outer surface of the bolt body, and the pitch of the first lead thread is larger than that of the second lead thread.

[0014] The technical effect of the above further scheme is that one of the nut bodies has been positioned on the outer surface of the bolt body close to the fixed plate.

[0015] As a preferred embodiment, the anti-vibration washer is annular, and the inner wall of the anti-vibration washer is movably sleeved on the outer surface of the bolt body.

[0016] The technical effect of the above further scheme is that the anti-vibration washer and the rubber washer on one side of the nut body have been placed in advance.

[0017] As a preferred embodiment, a circular groove is formed at the center of the bottom of the fixed plate.

[0018] The technical effect of the above further scheme is that the circular groove facilitates quick installation of the nut.

[0019] As a preferred embodiment, the two nut bodies are composed of a wear-resistant layer, an anti-vibration coating, an anti-corrosion layer, a filling layer, and a main body layer.

[0020] The technical effect of the above further scheme is that the composition of the wear-resistant layer, the anti-vibration coating, the anti-corrosion layer, the filling layer, and the main body layer helps to improve the comprehensive properties of the nut.

[0021] As a preferred embodiment, the top of the main body layer is provided with a filling layer, and the top of the filling layer is provided with an anti-corrosion layer.

[0022] The technical effect of the above further scheme is that the wear-resistant layer in the nut body is composed of nanodiamond, and the nanodiamond particles are added to the metal matrix to greatly improve the hardness and wear resistance of the material.

[0023] As a preferred implementation, the top of the anti-corrosion layer is provided with a shock-resistant coating.

[0024] The technical effect of the further scheme is that the shock-resistant coating is composed of an epoxy resin coating, which has good adhesion and chemical resistance, and the shock resistance can be enhanced by adding fillers.

[0025] As a preferred implementation, the top of the anti-corrosion layer is provided with a shock-resistant coating.

[0026] The technical effect of the further scheme is that the shock-resistant coating is composed of an epoxy resin coating, which has good adhesion and chemical resistance, and the shock resistance can be enhanced by adding fillers.

[0027] Compared with the prior art, the utility model has the advantages and positive effects that:

[0028] 1、The utility model discloses a fixing plate and bolt body are inserted in the connecting piece required to be connected as a whole, one of the nut body is located on the outer surface of the bolt body close to the fixed plate, the shock pad and rubber pad of one side of the nut body have been placed in advance, then the other nut body is sleeved on the surface of the bolt body, then rotates the other nut body, makes it slowly vertically downwardly move through the first lead thread on the surface of the bolt body, and one of the nut body also gradually vertically moves towards the connecting piece along the first lead thread on the other end of the bolt body, when two nut bodies gradually move to the surface of the second lead thread, the staff can utilize the tool to twist two nut bodies, because the thread between the first lead thread and the second lead thread is through, then through the strong twist of the tool, two nut bodies move more closely towards the connecting piece, because the thread of two different leads interacts, can produce an additional locking force, so can firmly connect the connecting piece, and the plurality of square anti -skid blocks of one side of two nut bodies can generate a large amount of friction force to the shock pad, make it more closely connected, the shock pad is made of polyurethane, polyurethane is a synthetic material, has higher wear resistance and tear strength, and also can provide better shock absorption effect, so as to deal with the vibration of the connecting piece, in addition, the rubber pad can utilize the rubber property on the surface to increase the friction and shock resistance, so that the nut can be better anti -loose, improve the anti -loose effect of the nut.

[0029] 2、The utility model discloses, the wear -resisting layer in nut body is composed of nanometer diamond, adds nanometer diamond particle in metal matrix to be used for improving the hardness and wear resistance of material greatly, the shock -resisting coating is composed of epoxy resin coating, and the epoxy resin coating has good adhesion and chemical resistance, and can enhance its shock -damping performance by adding filler, the corrosion -resistant layer is composed of biopolymer coating, uses the biopolymer such as chitosan, cellulose etc. of natural source as coating material, has good biodegradability and environmental friendliness and good corrosion resistance, and the filling layer is composed of microcapsule technology, wherein microcapsule technology is embedding the microcapsule containing repair agent in coating, when coating is damaged, and microcapsule breaks and release repair agent, and the crack is repaired automatically, prolongs its service life, and the main body layer is the main body, to reach can utilize new material and prolong the service life and corrosion resistance, improve the practicability of locknut. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 The utility model provides a main body structure schematic diagram of locknut for rail transit link, and the utility model discloses, the wear -resisting layer in nut body is composed of nanometer diamond, adds nanometer diamond particle in metal matrix to be used for improving the hardness and wear resistance of material greatly, the shock -resisting coating is composed of epoxy resin coating, and the epoxy resin coating has good adhesion and chemical resistance, and can enhance its shock -damping performance by adding filler, the corrosion -resistant layer is composed of biopolymer coating, uses the biopolymer such as chitosan, cellulose etc. of natural source as coating material, has good biodegradability and environmental friendliness and good corrosion resistance, and the filling layer is composed of microcapsule technology, wherein microcapsule technology is embedding the microcapsule containing repair agent in coating, when coating is damaged, and microcapsule breaks and release repair agent, and the crack is repaired automatically, prolongs its service life, and the main body layer is the main body, to reach can utilize new material and prolong the service life and corrosion resistance, improve the practicality of locknut.

[0031] Figure 2 The utility model provides a side view structure schematic diagram of locknut for rail transit link, and the utility model discloses, the wear -resisting layer in nut body is composed of nanometer diamond, adds nanometer diamond particle in metal matrix to be used for improving the hardness and wear resistance of material greatly, the shock -resisting coating is composed of epoxy resin coating, and the epoxy resin coating has good adhesion and chemical resistance, and can enhance its shock -damping performance by adding filler, the corrosion -resistant layer is composed of biopolymer coating, uses the biopolymer such as chitosan, cellulose etc. of natural source as coating material, has good biodegradability and environmental friendliness and good corrosion resistance, and the filling layer is composed of microcapsule technology, wherein microcapsule technology is embedding the microcapsule containing repair agent in coating, when coating is damaged, and microcapsule breaks and release repair agent, and the crack is repaired automatically, prolongs its service life, and the main body layer is the main body, to reach can utilize new material and prolong the service life and corrosion resistance, improve the practicability of locknut.

[0032] Figure 3 The utility model provides a bottom view structure schematic diagram of locknut for rail transit link, and the utility model discloses, the wear -resisting layer in nut body is composed of nanometer diamond, adds nanometer diamond particle in metal matrix to be used for improving the hardness and wear resistance of material greatly, the shock -resisting coating is composed of epoxy resin coating, and the epoxy resin coating has good adhesion and chemical resistance, and can enhance its shock -damping performance by adding filler, the corrosion -resistant layer is composed of biopolymer coating, uses the biopolymer such as chitosan, cellulose etc. of natural source as coating material, has good biodegradability and environmental friendliness and good corrosion resistance, and the filling layer is composed of microcapsule technology, wherein microcapsule technology is embedding the microcapsule containing repair agent in coating, when coating is damaged, and microcapsule breaks and release repair agent, and the crack is repaired automatically, prolongs its service life, and the main body layer is the main body, to reach can utilize new material and prolong the service life and corrosion resistance, improve the practicability of locknut.

[0033] Figure 4 The utility model provides a side view structure schematic diagram of locknut for rail transit link, and the utility model discloses, the wear -resisting layer in nut body is composed of nanometer diamond, adds nanometer diamond particle in metal matrix to be used for improving the hardness and wear resistance of material greatly, the shock -resisting coating is composed of epoxy resin coating, and the epoxy resin coating has good adhesion and chemical resistance, and can enhance its shock -damping performance by adding filler, the corrosion -resistant layer is composed of biopolymer coating, uses the biopolymer such as chitosan, cellulose etc. of natural source as coating material, has good biodegradability and environmental friendliness and good corrosion resistance, and the filling layer is composed of microcapsule technology, wherein microcapsule technology is embedding the microcapsule containing repair agent in coating, when coating is damaged, and microcapsule breaks and release repair agent, and the crack is repaired automatically, prolongs its service life, and the main body layer is the main body, to reach can utilize new material and prolong the service life and corrosion resistance, improve the practicability of locknut.

[0034] Legend:

[0035] 1, fixed plate, 101, shock -resisting coating, 102, bolt body, 103, first lead screw, 104, second lead screw, 105, nut body, 106, square antiskid block, 107, rubber gasket, 108, round groove, 109, shock -resisting gasket, 2, wear -resisting layer, 201, corrosion -resistant layer, 202, filling layer, 203, main body layer. DETAILED DESCRIPTION

[0036] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiments only are a part of embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the range of protection of the utility model.

[0037] Embodiment 1, please refer to Figures 1-4The utility model provides a technical scheme: a rail transit links with lock nut, including fixed plate 1, bolt body 102 is fixedly connected in the top center place of fixed plate 1, and the outer surface of bolt body 102 is close to the top and is equipped with first lead screw thread 103, second lead screw thread 104 is equipped on the outer surface of bolt body 102, and the pitch of second lead screw thread 104 is smaller, two nut body 105 are threadedly connected on the outer surface of bolt body 102, a plurality of square anti -skid block 106 are fixedly connected on one side of the outer surface of two nut body 105, two shock pads 109 are set up on one side of the outer surface of two nut body 105, and one side of the outer surface of two shock pads 109 is equipped with rubber pad 107, the pitch of first lead screw thread 103 is set to be larger, rubber pad 107 is annular, the inner wall of rubber pad 107 is movably sleeved on the outer surface of bolt body 102, the pitch of first lead screw thread 103 is larger than second lead screw thread 104, shock pad 109 is annular, the inner wall of shock pad 109 is movably sleeved on the outer surface of bolt body 102, and round groove 108 is equipped in the bottom center place of fixed plate 1.

[0038] In the embodiment, first, fixed plate 1 and bolt body 102 are inserted into the connecting piece required to be connected, at this time, one of the nut body 105 is located on the outer surface of bolt body 102 close to fixed plate 1, the shock pad 109 and rubber pad 107 on one side of the nut body 105 have been placed in advance, then the other nut body 105 is sleeved on the surface of bolt body 102, then the other nut body 105 is rotated, so that it slowly moves vertically downward through the first lead screw thread 103 on the surface of bolt body 102, at the same time, the other nut body 105 also gradually moves vertically towards the connecting piece along the first lead screw thread 103 on the other end of bolt body 102, when the two nut body 105 gradually move to the surface of second lead screw thread 104, the worker can use a tool to twist the two nut body 105, since the thread between the first lead screw thread 103 and the second lead screw thread 104 is continuous, then through the strong twisting of the tool, the two nut body 105 move more closely towards the connecting piece, since the threads of different leads interact with each other, an additional locking force is generated, so the connecting piece can be firmly connected, at the same time, the plurality of square anti -skid block 106 on one side of the two nut body 105 can generate a large amount of friction force on the shock pad 109, so that it is more closely connected, the shock pad 109 is made of polyurethane, which is a synthetic material with high wear resistance and tear strength, and can also provide good shock absorption effect to cope with the vibration of the connecting piece, in addition, the rubber pad 107 can increase the friction force and shock resistance by using the rubber properties of its surface, so that the nut can be better prevented from loosening, and the anti -loose effect of the nut is improved.

[0039] As shown in Figures 1-4 The two nut bodies 105 are composed of wear-resistant layer 2, shock-resistant coating 101, corrosion-resistant layer 201, filling layer 202 and main body layer 203. The top of the main body layer 203 is provided with the filling layer 202, the top of the filling layer 202 is provided with the corrosion-resistant layer 201, the top of the corrosion-resistant layer 201 is provided with the shock-resistant coating 101, and the top of the shock-resistant coating 101 is provided with the wear-resistant layer 2.

[0040] In this embodiment, the wear-resistant layer 2 in the nut body 105 is composed of nano-diamond, which is added to the metal matrix to greatly improve the hardness and wear resistance of the material. The shock-resistant coating 101 is composed of an epoxy resin coating, which has good adhesion and chemical resistance, and its shock-absorbing performance can be enhanced by adding fillers. The corrosion-resistant layer 201 is composed of a biopolymer coating, which uses naturally derived biopolymers such as chitosan and cellulose as coating materials, and has good biodegradability, environmental friendliness and good corrosion resistance. The filling layer 202 is composed of microcapsule technology, which embeds microcapsules containing repair agents in the coating. When the coating is damaged, the microcapsules rupture and release the repair agent, automatically repairing the cracks and prolonging the service life. The main body layer 203 is the main body, so that the service life and corrosion resistance can be prolonged by using new materials, and the practicality of the lock nut is improved.

[0041] Working principle: in use, first, the fixed plate 1 and the bolt body 102 are inserted into the connecting piece, one of the nut bodies 105 is located on the outer surface of the bolt body 102 near the fixed plate 1, the anti-vibration gasket 109 and the rubber gasket 107 on one side of the nut body 105 have been placed in advance, then the other nut body 105 is sleeved on the surface of the bolt body 102, then the other nut body 105 is slowly moved vertically downward along the first lead thread 103 on the surface of the bolt body 102, at the same time, one of the nut bodies 105 is also gradually moved vertically to the connecting piece along the first lead thread 103 on the other end of the bolt body 102, when the two nut bodies 105 gradually move to the surface of the second lead thread 104, the workers can use tools to twist the two nut bodies 105, because the threads between the first lead thread 103 and the second lead thread 104 are through, then through the strong twisting of the tool, the two nut bodies 105 move more closely to the connecting piece, because the threads of different leads interact with each other, an additional locking force is generated, so the connecting piece can be firmly connected, at the same time, the multiple square anti-skid blocks 106 on one side of the two nut bodies 105 can generate a large amount of friction force against the anti-vibration gasket 109, so that it is more tightly connected, the anti-vibration gasket 109 is made of polyurethane, which is a synthetic material with high wear resistance and tear strength, and can also provide good shock absorption effect to cope with the vibration of the connecting piece, in addition, the rubber gasket 107 can increase the friction and shock resistance by using the rubber properties on its surface, so as to better prevent the nut from loosening and improve the anti-loosening effect of the nut, and the wear-resistant layer 2 in the nut body 105 is composed of nano diamond, which is added to the metal matrix to greatly improve the hardness and wear resistance of the material, the anti-vibration coating 101 is composed of an epoxy resin coating, which has good adhesion and chemical resistance, and can enhance its shock absorption performance by adding fillers, the corrosion-resistant layer 201 is composed of a biopolymer coating, which uses natural biopolymers such as chitosan and cellulose as coating materials, which have good biodegradability, environmental friendliness and good corrosion resistance, the filling layer 202 is composed of microcapsule technology, which is embedded in the coating with microcapsules containing repair agents, when the coating is damaged, the microcapsules break and release repair agents to automatically repair cracks and prolong the service life, the main layer 203 is the main body, so as to prolong the service life and corrosion resistance by using new materials, and improve the practicality of the locking nut.

[0042] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in other forms, and any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields with equivalent changes, but any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application without departing from the technical scheme of the present application still falls within the protection scope of the present application.

Claims

1. A lock nut for rail transport linkages, characterized in that The nut comprises: A fixed plate (1); A bolt body (102) fixedly connected to the top center of the fixed plate (1), and a first lead screw thread (103) is arranged on the outer surface of the bolt body (102) near the top end; A second lead screw thread (104) is arranged on the outer surface of the bolt body (102), and the pitch of the second lead screw thread (104) is smaller; Two nut bodies (105) are threadedly connected to the outer surface of the bolt body (102); A plurality of square anti-skid blocks (106) are fixedly connected to one side of the outer surface of the two nut bodies (105); Two anti-vibration washers (109) are arranged on one side of the outer surface of the two nut bodies (105), and one side of the outer surface of the two anti-vibration washers (109) is provided with a rubber washer (107).

2. The lock nut of claim 1, wherein: The pitch of the first lead screw thread (103) is set to be larger, the rubber washer (107) is annular, the inner wall of the rubber washer (107) is movably sleeved on the outer surface of the bolt body (102), and the pitch of the first lead screw thread (103) is larger than that of the second lead screw thread (104).

3. The lock nut of claim 1, wherein: The anti-vibration washer (109) is annular, and the inner wall of the anti-vibration washer (109) is movably sleeved on the outer surface of the bolt body (102).

4. The lock nut of claim 1, wherein: A circular groove (108) is arranged at the bottom center of the fixed plate (1).

5. The lock nut of claim 1, wherein: The two nut bodies (105) are composed of a wear-resistant layer (2), an anti-vibration coating (101), a corrosion-resistant layer (201), a filling layer (202), and a main body layer (203).

6. The lock nut of claim 5, wherein: The top of the main body layer (203) is provided with the filling layer (202), and the top of the filling layer (202) is provided with the corrosion-resistant layer (201).

7. The lock nut of claim 6, wherein: The top of the corrosion-resistant layer (201) is provided with the anti-vibration coating (101).

8. The lock nut of claim 7, wherein: The top of the anti-vibration coating (101) is provided with the wear-resistant layer (2). The top of the anti-vibration coating (101) is provided with the wear-resistant layer (2).

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