A high-speed rail bolt that prevents loosening

Abstract

The present invention relates to the technical field of bolts, specifically to an anti-loosening high-speed rail bolt, comprising a screw rod, a nut 1 and a nut 2 being screwed onto the rod body of the screw rod, a stacking assembly being provided between the nut 1 and the nut 2, a clamping part being inserted into the inner ring surface of the nut 2, a pushing part being inserted into the top of the stacking assembly, a transition pushing part being inserted into the side of the nut 2 close to the stacking assembly, after the nut 1 and the nut 2 are locked on the screw rod, the nut 1 squeezes the pushing part to push the transition pushing part to drive the clamping part to clamp the screw rod, at which time the nut 1 and the nut 2 are reinforced against falling off on the screw rod; the beneficial effect is as follows: during the locking process of the nut 1 and the nut 2, the nut 1 squeezes the pressure ring in the pushing part, the pressure ring falls in the reserved groove, and drives the push plate to move downward. The bottom end of the push plate pushes the clamping handle along the slope of the clamping handle, causing the clamping handle to stretch the rubber belt and deform. The rubber belt is clamped between the clamping handle and the screw rod, thereby generating a clamping force on the screw rod, thereby achieving the anti-falling reinforcement of the nut 1 and the nut 2 on the screw rod.

Description

Technical Field

[0001] The present invention relates to the technical field of bolts, in particular to an anti-loosening high-speed rail bolt. Background Art

[0002] In the high-speed rail industry, bolts are critical connecting components, and their anti-loosening performance is directly related to the safety and stability of high-speed rail operations. Traditional high-speed rail bolts are typically tightened with a single nut. However, during operation, due to various factors such as vibration, impact, and temperature fluctuations, the nut is prone to loosening, leading to connection failure and posing a serious safety hazard to high-speed rail operations.

[0003] To address this issue, the industry has attempted to adopt a double-nut fastening method, threading two nuts onto the screw rod in sequence, leveraging the friction between the two nuts to enhance the fastening effect. However, this method still has shortcomings in practical applications. The two nuts rely solely on a simple threaded fit, lacking an effective connection and elastic buffer mechanism. This makes it difficult to completely prevent loosening during long-term operation and under complex operating conditions.

[0004] In addition, although some existing anti-loosening bolts adopt additional anti-loosening structures, these structures are often more complicated, which increases the manufacturing cost and installation difficulty of the bolts. They are also not convenient enough during the actual disassembly process, affecting maintenance efficiency.

[0005] Therefore, it is of great practical significance to develop a high-speed rail bolt with simple structure, good anti-loosening effect and easy installation and disassembly. Summary of the Invention

[0006] The purpose of the present invention is to provide a high-speed railway bolt that prevents loosening, so as to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an anti-loosening high-speed rail bolt, comprising a screw rod, a nut 1 and a nut 2 being threaded on the rod body of the screw rod, a stacking assembly being provided between nut 1 and nut 2, a clamping piece being inserted into the inner ring surface of nut 2, a pushing piece being inserted into the top of the stacking assembly, and a transition pushing piece being inserted into the side of nut 2 close to the stacking assembly. After nut 1 and nut 2 are tightened on the screw rod, nut 1 squeezes the pushing piece to push the transition pushing piece to drive the clamping piece to clamp the screw rod. At this time, nut 1 and nut 2 are reinforced on the screw rod to prevent them from falling off.

[0008] Preferably, the stacking assembly includes a connecting ring and a plug ring. The connecting ring is a circular ring plate, and the inner ring opening of the connecting ring is a truncated cone opening. The connecting ring is fixed to one end of nut two, and the plug ring is a truncated cone ring plate. The connecting ring and the plug ring match, that is, after nut two and nut one are close together, the plug ring is inserted into the connecting ring. An elastic clip is provided between the plug ring and nut two to improve the firmness of nut one and nut two after being screwed to the screw.

[0009] Preferably, the elastic clamp includes a clamping groove, an introduction ring and a rubber clamping ring. The clamping groove is a circular ring groove with an arc-shaped cross section. The clamping groove is opened on the surface of the plug ring. The introduction ring is fixed on the surface of nut two. The rubber clamping ring is a circular ring structure with an arc-shaped cross section. The rubber clamping ring is sleeved and fixed on one end of the introduction ring. When the plug ring is inserted into the connecting ring, the rubber clamping ring is clamped between the introduction ring and the clamping groove.

[0010] Preferably, the cross-sectional arc width of the rubber clamping ring is greater than the notch width of the clamping groove.

[0011] Preferably, the inner ring surface of the nut 2 is provided with an inner ring groove, the top surface of the plug ring is provided with a reserved groove, the bottom surface of the reserved groove is provided with multiple through-holes, the surface of the nut 2 is provided with multiple slots, the through-holes and the slots correspond one to one, a socket is provided on one side of the slot, the socket is connected to the inner ring groove, the clamping part is installed in the inner ring groove, the pushing part is installed in the reserved groove, and the transition pushing part passes through the through-holes and the slots.

[0012] Preferably, the clamping member includes a rubber belt and a clamping handle. The rubber belt is annular in structure and is fixed between the top surface of the inner ring groove and the bottom surface of the inner ring groove. The inner ring diameter of the rubber belt is larger than the inner ring diameter of the inner ring groove. The clamping handle is a "convex" shaped plate structure. One end of the clamping handle is fixed on the outer ring surface of the rubber belt, and the other end of the clamping handle is provided with a slope on the top surface.

[0013] Preferably, a plurality of balls are embedded in the other end of the clamping handle, the height of one end of the clamping handle is less than the height of the inner ring groove, and the height of the other end of the clamping handle is equal to the height of the socket.

[0014] Preferably, the pushing member includes a pressure ring, the reserved groove is an annular groove, the pressure ring is an annular plate, the pressure ring is inserted in the reserved groove, the height of the pressure ring is equal to the height of the reserved groove, after the pressure ring is fully retracted into the reserved groove, the bottom end of the pressure ring pushes the transition pushing member to push the clamping handle to tension the rubber belt to deform, and the rubber belt is clamped between the clamping handle and the screw.

[0015] Preferably, the pressure ring is provided with side grooves at the inner ring of the bottom surface and the outer ring of the bottom surface. The side grooves are annular grooves, and the two side grooves are different in size. A rubber support ring is fixed between the top surface of the side groove and the bottom surface of the reserved groove. The rubber support ring is an annular plate structure. When the rubber support ring is in the initial state, one end of the rubber support ring supporting the pressure ring extends out of the reserved groove. After the pressure ring is fully inserted into the reserved groove, the rubber support ring is compressed and elastically deformed.

[0016] Preferably, the transition push piece includes a push plate, the width of the push plate, the through opening and the slot are equal, the top end of the push plate is fixed to the bottom surface of the pressure ring, and after the pressure ring is inserted into the reserved groove, the bottom end of the push plate blocks one side of the other end of the clamping handle, and at this time the other end of the clamping handle is retracted into the socket.

[0017] Preferably, when the pressure ring falls along the reserved groove, the bottom end of the push plate pushes the clamping handle along the slope, and the clamping handle stretches the rubber belt to deform.

[0018] Preferably, after the pressure ring is fully inserted into the reserved groove, the push plate blocks the clamping handle from rebounding into the slot, and at this time the plug ring is inserted into the inner ring opening of the connecting ring, and the guide ring and the rubber clamping ring are extended into the clamping groove, completing the firm threading of nut one and nut two on the screw rod.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The anti-loosening high-speed rail bolt proposed in this invention utilizes a matching design of a connecting ring and a plug ring in the stacked assembly. When nuts 2 and 1 are brought close together, the plug ring inserts into the connecting ring, forming a tight connection. Simultaneously, a rubber snap ring in the elastic clamp is clamped between the guide ring and the slot. Because the cross-sectional arc width of the rubber snap ring is greater than the slot width, it is squeezed and deformed, generating elastic force that forms a traction connection between nuts 1 and 2 and acts as an elastic gasket, effectively enhancing the secure connection of the nut to the screw rod and significantly reducing the risk of nut loosening.

[0021] During the tightening process, Nut 1 squeezes the compression ring in the pusher, causing it to drop into the pre-set groove, driving the push plate downward. The bottom end of the push plate pushes the clamping handle along its slope, deforming the rubber band tensioned by the clamping handle. The rubber band is clamped between the clamping handle and the screw, exerting a clamping force on the screw and preventing Nut 1 and Nut 2 from falling off. This anti-falloff reinforcement mechanism further improves the reliability of the bolt connection and ensures safe high-speed rail operation.

[0022] The guide ring, rubber retaining ring, and slot design provide multiple functions, achieving a traction connection between the nuts and acting as an elastic gasket, simplifying the bolt structure and reducing manufacturing costs. Furthermore, the logical coordination between the various components makes installation and removal relatively simple, improving construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 A top view of the structure of the present invention;

[0025] Figure 3 for Figure 2 Structural cross-section view at AA in the middle;

[0026] Figure 4 for Figure 3 A schematic diagram of the structure at center A;

[0027] Figure 5 This is a schematic diagram of the connection structure between the nut 2 and the screw rod of the present invention;

[0028] Figure 6 for Figure 5 Front view of the middle structure;

[0029] Figure 7 for Figure 6 Structural cross-section view at the middle BB;

[0030] Figure 8 for Figure 7 A magnified schematic diagram of the structure at point B in the middle;

[0031] Figure 9 This is a schematic diagram of the connection structure between the nut 2 and the connecting ring of the present invention;

[0032] Figure 10 This is a schematic diagram of the connection structure between the pressure ring and the push plate of the present invention;

[0033] Figure 11 This is a schematic diagram of the structure of the clamping handle of the present invention;

[0034] Figure 12 It is a schematic diagram of the connection structure between the nut 1 and the plug ring of the present invention.

[0035] In the figure: screw 1, nut 1 2, nut 2 3, connecting ring 4, plug ring 5, card groove 6, guide ring 7, rubber snap ring 8, inner ring groove 9, reserved groove 10, through-hole 11, slot 12, socket 13, rubber belt 14, clamping handle 15, slope 16, ball 17, pressure ring 18, side groove 19, rubber support ring 20, push plate 21. DETAILED DESCRIPTION

[0036] In order to clearly and completely describe the objectives and technical solutions of the present invention and make the advantages more clearly understood, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] See also Figures 1 to 12The present invention provides a technical solution: an anti-loosening high-speed iron bolt, comprising a screw rod 1, a nut 2 and a nut 3 being screwed on the rod body of the screw rod 1, a stacking assembly being provided between the nut 2 and the nut 3, the stacking assembly comprising a connecting ring 4 and a plug ring 5, the connecting ring 4 being a circular ring plate, the inner ring opening of the connecting ring 4 being a truncated cone opening, the connecting ring 4 being fixed to one end of the nut 3, the plug ring 5 being a truncated cone ring plate, the connecting ring 4 and the plug ring 5 matching, that is, after the nut 3 and the nut 2 are close together, the plug ring 5 is inserted into the connecting ring 4, and a stacking assembly is provided between the plug ring 5 and the nut 3. There is an elastic clamping piece to enhance the firmness of nut 1 2 and nut 2 3 after being screwed to the screw rod 1; the elastic clamping piece includes a clamping groove 6, an introduction ring 7 and a rubber clamping ring 8. The clamping groove 6 is a circular ring groove with an arc-shaped fracture. The clamping groove 6 is opened on the surface of the plug ring 5. The introduction ring 7 is fixed on the surface of the nut 2 3. The rubber clamping ring 8 is a circular ring structure with an arc-shaped cross section. The rubber clamping ring 8 is sleeved and fixed on one end of the introduction ring 7. When the plug ring 5 is inserted into the connecting ring 4, the rubber clamping ring 8 is clamped between the introduction ring 7 and the clamping groove 6; the cross-sectional arc width of the rubber clamping ring 8 is greater than the notch width of the clamping groove 6. After the screw rod 1 passes through the hole on the surface of the high-speed rail component, the nut 2 is first screwed onto the screw rod 1 and locked. It should be noted that when installing the nut 2, the plug ring 5 is on the side away from the end plate of the screw rod 1. After the nut 2 and the screw 1 are screwed and locked, the nut 2 3 is screwed onto the screw rod 1. As the nut 2 3 approaches the nut 1 2, the plug ring 5 is gradually pushed into the inner ring opening of the connecting ring 4. After the plug ring 5 completely enters the inner ring opening of the connecting ring 4, the guide ring 7 and the rubber snap ring 8 are inserted into the groove 6, thereby realizing the traction connection between the nut 1 2 and the nut 2 3, and acting as an elastic gasket between the nut 1 2 and the nut 2 3, so that the nut 1 2 and the nut 2 3 are firmly screwed on the screw rod 1, that is, the guide ring 7 and the rubber snap ring 8 cooperate with the groove 6 to have multiple uses and rich functions.

[0038] The inner ring surface of nut 2 3 is connected with a clamping part, the top of the stacked assembly is connected with a pushing part, and the side of nut 2 3 close to the stacked assembly is connected with a transition pushing part. After nut 1 2 and nut 2 3 are locked on the screw 1, nut 1 2 squeezes the pushing part to push the transition pushing part to drive the clamping part to clamp the screw 1. At this time, nut 1 2 and nut 2 3 are reinforced on the screw 1 to prevent them from falling off; the inner ring surface of nut 2 3 is provided with an inner ring groove 9, the top surface of the plug ring 5 is provided with a reserved groove 10, and the bottom surface of the reserved groove 10 is provided with multiple through-holes 11, and the surface of nut 2 3 is provided with multiple slots 12, the through-holes 11 and the slots 12 correspond one to one, and a socket 13 is provided on one side of the slot 12, which is connected to the inner ring groove 9. The clamping part is installed in the inner ring groove 9, the pushing part is installed in the reserved groove 10, and the transition pushing part passes through the through-hole 11 and the slot 12.

[0039] The clamping member includes a rubber belt 14 and a clamping handle 15. The rubber belt 14 is annular in structure. The rubber belt 14 is fixed between the top surface of the inner ring groove 9 and the bottom surface of the inner ring groove 9. The inner ring diameter of the rubber belt 14 is larger than the inner ring diameter of the inner ring groove 9. The clamping handle 15 is a "convex" shaped plate structure. One end of the clamping handle 15 is fixed to the outer ring surface of the rubber belt 14, and the other end of the clamping handle 15 is provided with a slope 16 on the top surface; a plurality of balls 17 are embedded in the other end of the clamping handle 15, and the height of one end of the clamping handle 15 is less than the height of the inner ring groove 9, and the height of the other end of the clamping handle 15 is equal to the height of the socket 13; the pushing member includes a pressure ring 18, the reserved groove 10 is an annular groove, the pressure ring 18 is an annular plate, the pressure ring 18 is inserted in the reserved groove 10, and the pressure ring 18 The height of the cam 18 is equal to the height of the reserved groove 10. After the pressure ring 18 is fully retracted into the reserved groove 10, the bottom end of the pressure ring 18 squeezes the transition push piece to push the clamping handle 15 to tension the rubber belt 14 and deform it. The rubber belt 14 is clamped between the clamping handle 15 and the screw 1; the pressure ring 18 is provided with side grooves 19 at the inner ring of the bottom surface and the outer ring of the bottom surface. The side grooves 19 are annular grooves. The two side grooves 19 are of different sizes. A rubber support ring 20 is fixed between the top surface of the side groove 19 and the bottom surface of the reserved groove 10. The rubber support ring 20 is an annular plate structure. When the rubber support ring 20 is in the initial state, one end of the rubber support ring 20 supporting the pressure ring 18 extends out of the reserved groove 10. After the pressure ring 18 is fully inserted into the reserved groove 10, the rubber support ring 20 is compressed to produce elastic deformation; the transition push piece includes a plurality of grooves 19, 19 and 20. The push plate 21 is included, and the widths of the push plate 21, the through-opening 11 and the slot 12 are equal. The top of the push plate 21 is fixed to the bottom surface of the pressure ring 18. After the pressure ring 18 is inserted into the reserved groove 10, the bottom end of the push plate 21 blocks one side of the other end of the clamping handle 15. At this time, the other end of the clamping handle 15 is retracted into the socket 13; in the process of the pressure ring 18 falling along the reserved groove 10, the bottom end of the push plate 21 pushes the clamping handle 15 along the slope 16, and the clamping handle 15 stretches the rubber belt 14 to deform; after the pressure ring 18 is fully inserted into the reserved groove 10, the push plate 21 blocks the clamping handle 15 from rebounding into the slot 12, and at this time the plug ring 5 is inserted into the inner ring mouth of the connecting ring 4, and the guide ring 7 and the rubber clamping ring 8 extend into the card groove 6, completing the firm screw connection between the nut 1 2 and the nut 2 3. On the screw rod 1; when it is necessary to remove nut 1 2 and nut 2 3, it is necessary to use a wrench to tighten nut 2 3 back with force. The tightening force is greater than the clamping force of the clamping handle 15 and the rubber band 14 on the screw rod 1, so that the nut 2 3 is retreated. After the nut 2 3 retreats, a gap appears between nut 2 3 and nut 1 2, and the rubber support ring 20 gradually rebounds and pushes the pressure ring 18 to move toward the outside of the reserved groove 10, and the push plate 21 is gradually pulled out toward the outside of the slot 12. When the push plate 21 is no longer at the end of the clamping handle 15, the rubber band 14 also rebounds, and the rubber band 14 drives the clamping handle 15 to reset. At this time, the clamping handle 15 no longer clamps the screw rod 1, making it easy to tighten the nut 2 3 back and remove it from the screw rod 1. When the nut 2 3 is removed, the nut 1 2 is screwed back and removed from the screw rod 1.

[0040] How to use the anti-loosening high-speed rail bolt: This anti-loosening high-speed rail bolt is mainly composed of a screw 1, a nut 1 2, a nut 2 3, a stacking assembly, a clamping piece, a pushing piece, a transition pushing piece and other structures. Each structure works together to effectively improve the anti-loosening performance of the bolt. The following is a detailed usage method:

[0041] Insert screw rod 1 through the hole on the surface of the high-speed rail component. Slide nut 1 (2) onto screw rod 1, ensuring that the plug ring 5 is on the side away from the end plate of screw rod 1 during installation. Then tighten nut 1 (2). Slide nut 2 (3) onto screw rod 1 and gradually move it closer to nut 1 (2). As nut 2 (3) approaches nut 1 (2), the plug ring 5 is gradually pushed into the inner opening of the connecting ring 4 until the plug ring 5 is completely inside the inner opening of the connecting ring 4. At this point, the guide ring 7 and rubber snap ring 8 are inserted into the groove 6, with the rubber snap ring 8 clamped between the guide ring 7 and the groove 6. Because the cross-sectional arc width of the rubber snap ring 8 is greater than the notch width of the groove 6, the rubber snap ring 8 is squeezed and deformed, generating elastic force, forming a traction connection between nut 1 (2) and nut 2 (3), and acting as an elastic gasket, enhancing the firmness of the threaded connection between nut 1 (2) and nut 2 (3) on screw rod 1. As nut 1 (2) and nut 2 (3) continue to move closer together, nut 1 (2) squeezes pressure ring 18, causing it to drop into the pre-reserved groove 10. Side grooves 19 are located on both the inner and outer sides of the bottom surface of pressure ring 18. A rubber support ring 20 is secured between the side grooves 19 and the bottom surface of the pre-reserved groove 10. Initially, the rubber support ring 20 supports one end of pressure ring 18, extending out of the pre-reserved groove 10. As pressure ring 18 drops, the rubber support ring 20 is elastically deformed under pressure. The drop of pressure ring 18 drives push plate 21 downward, with the bottom end of push plate 21 blocking one side of the other end of clamping handle 15, which is now retracted into socket 13. As pressure ring 18 continues to drop, the bottom end of push plate 21 pushes against the slope 16 of clamping handle 15, causing the clamping handle 15 to deform while tensioning the rubber band 14. The rubber band 14 is clamped between the clamping handle 15 and the screw 1, exerting a clamping force on the screw 1 and securing the nuts 1 and 2 on the screw 1. Simultaneously, the push plate 21 prevents the clamping handle 15 from rebounding into the slot 12, ensuring a stable clamping state. During disassembly, use a wrench to forcefully retract the nut 2. The retraction force must be greater than the clamping force exerted by the clamping handle 15 and the rubber band 14 on the screw 1, causing the nut 2 to retract. After the nut 2 retracts, a gap appears between it and the nut 1. The rubber support ring 20 gradually rebounds, pushing the pressure ring 18 outward from the reserved groove 10. The movement of the pressure ring 18 drives the push plate 21 gradually outward from the slot 12. When the push plate 21 is no longer at the end of the clamping handle 15, the rubber band 14 rebounds, causing the clamping handle 15 to return to its original position. The clamping handle 15 no longer grips the screw 1. At this point, the nut 2 can be easily retracted and removed from the screw 1. After removing nut 2 (3), screw nut 1 (2) back onto screw 1 and remove it. The matching of connecting ring 4 and plug ring 5, as well as the coordination of rubber snap ring 8, guide ring 7, and retaining groove 6, achieves a traction connection and elastic buffering between nut 1 (2) and nut 2 (3), enhancing the secure connection of the nut to screw 1 and effectively preventing loosening. During the tightening process of nuts 1 (2) and 2 (3), the extrusion member pushes the transition member, which drives the clamping member to clamp screw 1, further enhancing the nut's anti-slip performance. During disassembly, each structure automatically resets, facilitating bolt removal and improving the convenience and reliability of bolt use.

[0042] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An anti-loosening high-speed rail bolt, comprising a screw (1), characterized in that: The rod body of the screw rod (1) is screwed with a nut 1 (2) and a nut 2 (3), a stacking assembly is provided between the nut 1 (2) and the nut 2 (3), the inner ring surface of the nut 2 (3) is plugged with a clamping piece, the top of the stacking assembly is plugged with a pushing piece, and the side of the nut 2 (3) close to the stacking assembly is plugged with a transition pushing piece. After the nut 1 (2) and the nut 2 (3) are locked on the screw rod (1), the nut 1 (2) squeezes the pushing piece to push the transition pushing piece to drive the clamping piece to clamp the screw rod (1), and at this time, the nut 1 (2) and the nut 2 (3) are reinforced on the screw rod (1) to prevent them from falling off; the stacking assembly includes a connecting ring (4) and a plug ring (5), and the connecting ring (4) ) is a circular ring plate, the inner ring opening of the connecting ring (4) is a truncated cone opening, the connecting ring (4) is fixed to one end of the nut two (3), the plug ring (5) is a truncated cone ring plate, the connecting ring (4) and the plug ring (5) are matched, that is, after the nut two (3) and the nut one (2) are close together, the plug ring (5) is inserted into the connecting ring (4), and an elastic clamp is provided between the plug ring (5) and the nut two (3) to improve the firmness of the nut one (2) and the nut two (3) after being screwed to the screw (1); the inner ring surface of the nut two (3) is provided with an inner ring groove (9), the top surface of the plug ring (5) is provided with a reserved groove (10), the bottom surface of the reserved groove (10) is provided with multiple through-holes (11), the nut two ( 3) is provided with a plurality of slots (12), the through-openings (11) and the slots (12) are in one-to-one correspondence, a socket (13) is provided on one side of the slots (12), the socket (13) is communicated with the inner ring groove (9), the clamping member is installed in the inner ring groove (9), the pushing member is installed in the reserved groove (10), and the transition pushing member passes through the through-opening (11) and the slots (12); the clamping member includes a rubber belt (14) and a clamping handle (15), the rubber belt (14) is annular in structure, the rubber belt (14) is fixed between the top surface of the inner ring groove (9) and the bottom surface of the inner ring groove (9), the inner ring diameter of the rubber belt (14) is larger than the inner ring diameter of the inner ring groove (9), and the clamping handle (15) is provided with a plurality of slots (12), the through-openings (11) and the slots (12) are in one-to-one correspondence, and a socket (13) is provided on one side of the slots (12), the socket (13) is communicated with the inner ring groove (9), the clamping member is installed in the inner ring groove (9), the pushing member is installed in the reserved groove (10), and the transition pushing member passes through the through-opening (11) and the slots (12); the clamping member includes a rubber belt (14) and a clamping handle (15), the rubber belt (14) is annular in structure, the rubber belt (14) is fixed between the top surface of the inner ring groove (9) and the bottom surface of the inner ring groove (9), the inner ring diameter of the rubber belt (14) is larger than the inner ring diameter of the inner ring groove (9), and the clamping handle (15) is provided with a plurality of slots (12) on the surface of the slots (12), the socket (13) is communicated with the inner ring groove (9), and the inner ring diameter ) is a "convex"-shaped plate structure, one end of the clamping handle (15) is fixed on the outer ring surface of the rubber belt (14), and the other end of the clamping handle (15) is provided with a slope (16) on the top surface; the extrusion member includes a pressure ring (18), the reserved groove (10) is an annular groove, the pressure ring (18) is an annular plate, the pressure ring (18) is inserted into the reserved groove (10), the height of the pressure ring (18) is equal to the height of the reserved groove (10), after the pressure ring (18) is completely retracted into the reserved groove (10), the bottom end of the pressure ring (18) pushes the transition pusher to push the clamping handle (15) to stretch the rubber belt (14) to deform, and the rubber belt (14) is clamped between the clamping handle (15) and the screw (1).

2. The anti-loosening high-speed railway bolt according to claim 1, characterized in that: The elastic clamping member comprises a clamping groove (6), an introduction ring (7) and a rubber clamping ring (8). The clamping groove (6) is a circular ring groove with an arc-shaped cross section. The clamping groove (6) is provided on the surface of the plug ring (5). The introduction ring (7) is fixed on the surface of the nut (3). The rubber clamping ring (8) is a circular ring structure with an arc-shaped cross section. The rubber clamping ring (8) is sleeved and fixed on one end of the introduction ring (7). When the plug ring (5) is inserted into the connecting ring (4), the rubber clamping ring (8) is clamped between the introduction ring (7) and the clamping groove (6).

3. The anti-loosening high-speed railway bolt according to claim 2, characterized in that: The cross-sectional arc width of the rubber clamping ring (8) is greater than the slot width of the clamping groove (6).

4. The anti-loosening high-speed railway bolt according to claim 1, characterized in that: The other end of the clamping handle (15) is embedded with a plurality of balls (17), the height of one end of the clamping handle (15) is less than the height of the inner ring groove (9), and the height of the other end of the clamping handle (15) is equal to the height of the socket (13).

5. The anti-loosening high-speed railway bolt according to claim 1, characterized in that: The pressure ring (18) is provided with side grooves (19) at the inner ring and the outer ring of the bottom surface. The side grooves (19) are annular grooves. The two side grooves (19) have different sizes. A rubber support ring (20) is fixed between the top surface of the side groove (19) and the bottom surface of the reserved groove (10). The rubber support ring (20) is an annular plate structure. When the rubber support ring (20) is in an initial state, one end of the rubber support ring (20) supporting the pressure ring (18) extends out of the reserved groove (10). After the pressure ring (18) is fully inserted into the reserved groove (10), the rubber support ring (20) is compressed to produce elastic deformation.

6. The anti-loosening high-speed railway bolt according to claim 5, characterized in that: The transition push piece includes a push plate (21), the push plate (21), the through opening (11) and the slot (12) have equal widths, the top end of the push plate (21) is fixed to the bottom surface of the pressure ring (18), and after the pressure ring (18) is inserted into the reserved groove (10), the bottom end of the push plate (21) blocks one side of the other end of the clamping handle (15), and at this time, the other end of the clamping handle (15) is retracted into the socket (13).

7. The anti-loosening high-speed railway bolt according to claim 6, characterized in that: When the pressure ring (18) falls along the reserved groove (10), the bottom end of the push plate (21) pushes the clamping handle (15) along the slope (16), and the clamping handle (15) stretches the rubber belt (14) to deform.

8. The anti-loosening high-speed railway bolt according to claim 7, characterized in that: After the pressure ring (18) is fully inserted into the reserved groove (10), the push plate (21) blocks the clamping handle (15) from rebounding into the slot (12), and at this time the plug ring (5) is inserted into the inner ring opening of the connecting ring (4), and the guide ring (7) and the rubber clamping ring (8) extend into the clamping groove (6), completing the secure screw connection between the nut 1 (2) and the nut 2 (3) on the screw rod (1).

Images