A high-speed rail bolt assembly with anti-deformation and stable connection

Abstract

The present invention relates to the technical field of bolt assemblies, specifically to a high-speed railway bolt assembly with anti-deformation and stable connection, comprising a bolt head, a screw and a nut, and also comprising: a support ring, which is sleeved on the screw and used to limit the nut; a tightening and fixing assembly, which is arranged inside the screw and used to tighten the nut from the inside to limit its displacement; an anti-rotation device, which is arranged on the nut and the support ring, and the anti-rotation device comprises a support and limiting assembly, a first anti-rotation assembly and a second anti-rotation assembly; the first anti-rotation assembly comprises a second friction protrusion arranged on the support ring and a first friction protrusion arranged on the nut. Through the cooperation of the support and limiting assembly and the tightening and fixing assembly, the vertical push plate extends into the bottom groove to push the sliding connecting plate, driving the conical plate to move up the internal groove, driving the movable plate to expand outward, and the sliding side plate squeezes the reset spring, while the tightening plate moves out of the placement groove and presses against the inner side of the nut, realizing mechanical limitation of the inner side of the nut, effectively preventing the nut from rotating.

Description

Technical Field

[0001] The present invention relates to the technical field of bolt assemblies, and in particular to a high-speed rail bolt assembly with anti-deformation and stable connection. Background Art

[0002] In modern high-speed rail systems, high-speed rail, with its advantages of speed, safety, and comfort, has become a key development direction in the global transportation sector. Bolt assemblies are key components connecting high-speed rail vehicles, tracks, and related infrastructure. The stability of these connections is directly related to the safety and reliability of high-speed rail operations.

[0003] Existing high-speed rail bolt assemblies face complex dynamic loads and vibration environments during operation. The constant vibration and impact generated by high-speed trains can cause nuts to gradually loosen or even fall off. This can cause failure of the connected components, leading to structural deformation and component displacement. In severe cases, it can also cause major accidents such as high-speed train derailments, compromising safety. Summary of the Invention

[0004] The object of the present invention is to provide a high-speed railway bolt assembly with anti-deformation and stable connection, so as to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a high-speed railway bolt assembly with anti-deformation and stable connection, comprising a bolt head, a screw rod and a nut, and further comprising:

[0006] A support ring is sleeved on the screw to limit the position of the nut;

[0007] A tightening and fixing assembly is provided inside the screw rod and is used to tighten the nut from the inside to limit its displacement;

[0008] The anti-rotation device is provided on the nut and the support ring, and includes a support limit assembly, a first anti-rotation assembly, and a second anti-rotation assembly; wherein:

[0009] When the second anti-rotation component is installed at the lower end of the screw, the vertical push plate in the support and limit component is inserted into the bottom groove at the bottom of the screw, driving the tightening fixing component to limit the nut;

[0010] The first anti-rotation assembly includes a second friction protrusion provided on the support ring and a first friction protrusion provided on the nut, and the two form a friction lock when in contact;

[0011] The second anti-rotation component includes a suction nozzle in contact with the lower end of the nut and a movable T-shaped slide. By pulling the T-shaped slide, the suction nozzle generates negative pressure, which is used to adsorb and fix the nut and the support ring.

[0012] Preferably, the first anti-rotation component also includes a fixing ring fixedly mounted on the lower end of the nut and a docking groove provided on the support ring for the fixing ring to extend into, the fixing ring is provided with a first friction protrusion, and the docking groove is provided with a second friction protrusion.

[0013] Preferably, the second anti-rotation component further comprises an annular cavity plate fixedly mounted on the support ring, the annular cavity plate is connected to a plurality of suction nozzles, and the annular cavity plate is further connected to two support connecting plates.

[0014] Preferably, an internal cavity is opened inside the supporting connecting plate, a piston plate is slidably connected in the internal cavity, one end of the piston plate is fixedly connected to a built-in spring, and the other end of the built-in spring is fixedly connected to the internal cavity.

[0015] Preferably, the piston plate is fixedly connected to one end away from the built-in spring with a T-shaped slide plate, a sliding support plate is fixedly connected between the two supporting connecting plates, and the sliding support plate is slidably connected to the T-shaped slide plate.

[0016] Preferably, the suction nozzle abuts against the lower end of the nut, and the annular cavity plate is connected to the suction nozzle to form a vacuum adsorption channel. When the T-shaped slide is pulled, the suction nozzle generates a negative pressure adsorption force.

[0017] Preferably, the clamping and fixing assembly includes an internal groove opened inside the screw, a conical plate slidably connected to the internal groove, a movable plate slidably connected to the inclined surface of the conical plate, and a clamping plate fixedly connected to the end of the movable plate away from the conical plate.

[0018] Preferably, the pressing and fixing assembly also includes a placement groove and a square groove opened on the screw rod, the placement groove is used to accommodate the pressing plate, a return spring is arranged in the square groove, one end of the return spring is connected to the inner wall of the square groove, and the other end of the return spring is connected to the sliding side plate.

[0019] Preferably, the sliding side plate is fixedly connected to the movable plate, the upper end of the conical plate is fixedly connected to a connecting spring, the lower end of the conical plate is fixedly connected to a sliding connecting plate, and the sliding connecting plate is slidably connected inside the screw.

[0020] Preferably, the support and limit assembly also includes a support cross plate fixedly mounted on the support connecting plate, a slot opened at one end of the T-shaped slide, and a fixed plate fixedly mounted at the lower end of the screw rod, and two sliding plug plates are slidably connected to the fixed plate, and one end of the sliding plug plate is fixedly connected to a connecting square plate.

[0021] Preferably, a middle spring is fixedly connected between the connecting square plate and the fixed plate, the two sliding inserts can be respectively extended into the two slots, and the lower end of the screw is provided with a bottom slot for the vertical push plate to extend into.

[0022] Preferably, a sliding connecting plate is slidably connected in the bottom groove, and the vertical push plate abuts against the sliding connecting plate.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. Through the cooperation of the support limit assembly and the tightening and fixing assembly, the vertical push plate extends into the bottom groove to push the sliding connecting plate, driving the conical plate to move up in the internal groove, driving the movable plate to expand outward, and the sliding side plate squeezes the reset spring. At the same time, the tightening plate moves out of the placement groove and presses against the inner side of the nut, realizing mechanical limitation of the inner side of the nut and effectively preventing the nut from rotating.

[0025] 2. By providing a first anti-rotation component and a second anti-rotation component, the fixing ring of the first anti-rotation component is embedded in the docking groove, and the first friction protrusion and the second friction protrusion form a friction lock; the second anti-rotation component pulls the T-shaped slide plate to make the sliding insert plate fit into the slot and fix it, and the piston plate moves in the internal cavity to stretch the built-in spring, and uses the connected suction nozzle to generate negative pressure to adsorb the lower end of the nut, realizing a multi-dimensional anti-loosening design and effectively improving the stability of the nut.

[0026] 3. When the vertical push plate pushes the fixing component to work, the first friction protrusion and the second friction protrusion are in contact, and the suction nozzle contacts the lower end of the nut. By pulling the T-shaped slide plate, not only the second anti-rotation component and the screw are fixed, but also negative pressure adsorption is triggered, which is convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0028] Figure 2 It is a schematic diagram of the screw structure of the present invention.

[0029] Figure 3 It is a schematic diagram of the bottom trough structure of the present invention.

[0030] Figure 4 Schematic diagram of the support ring structure of the present invention.

[0031] Figure 5 It is a schematic diagram of the position structure of the tightening and fixing component of the present invention.

[0032] Figure 6 It is a schematic structural diagram of the sliding connection plate of the present invention.

[0033] Figure 7 For the present invention Figure 6 Schematic diagram of the structure at point A in the middle.

[0034] Figure 8 Schematic diagram of the structure of the second anti-rotation component of the present invention.

[0035] Figure 9 It is a schematic diagram of the fixing ring structure of the present invention.

[0036] Figure 10 This is a schematic structural diagram of the T-shaped slide in the first state of the present invention.

[0037] Figure 11 It is a schematic diagram of the internal structure of the supporting connecting plate of the present invention.

[0038] Figure 12 It is a structural schematic diagram of the support and limiting assembly of the present invention.

[0039] Figure 13 This is a schematic structural diagram of the T-shaped slide in the second state of the present invention.

[0040] In the figure: 1. Bolt head; 2. Screw; 3. Tightening and fixing assembly; 4. Connecting piece; 6. First anti-rotation assembly; 7. Second anti-rotation assembly; 8. Nut; 9. Support and limit assembly; 31. Internal groove; 32. Conical plate; 33. Connecting spring; 34. Moving plate; 35. Sliding side plate; 36. Return spring; 37. Tightening plate; 38. Placement groove; 39. Square groove; 310. Sliding connecting plate; 61. Fixing ring; 62. First Friction protrusion; 63, docking groove; 64, second friction protrusion; 70, support ring; 71, suction nozzle; 72, annular cavity plate; 73, support connecting plate; 74, internal cavity; 75, piston plate; 76, built-in spring; 77, T-shaped slide plate; 78, sliding support plate; 91, supporting horizontal plate; 92, vertical push plate; 93, bottom groove; 94, fixed plate; 95, sliding plug plate; 96, connecting square plate; 97, middle spring; 98, slot. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on 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.

[0042] See also Figures 1 to 13The present invention provides a technical solution: a high-speed rail bolt assembly with anti-deformation and stable connection, including a bolt head 1, a screw rod 2 and a nut 8, and also including: a support ring 70, which is sleeved on the screw rod 2 and is used to limit the nut 8; a tightening and fixing assembly 3, which is arranged inside the screw rod 2 and is used to tighten the nut 8 from the inside to limit its displacement; an anti-rotation device, which is arranged on the nut 8 and the support ring 70, and the anti-rotation device includes a support and limiting assembly 9, a first anti-rotation assembly 6 and a second anti-rotation assembly 7; wherein: when the second anti-rotation assembly 7 is installed at the lower end of the screw rod 2, the vertical push plate 9 in the support and limiting assembly 9 2 is inserted into the bottom groove 93 at the bottom of the screw 2, driving the tightening and fixing component 3 to limit the nut 8; the first anti-rotation component 6 includes a second friction protrusion 64 provided on the support ring 70 and a first friction protrusion 62 provided on the nut 8, and the two form a friction lock after contact; the second anti-rotation component 7 includes a suction nozzle 71 in contact with the lower end of the nut 8 and a movable T-shaped slide 77. By pulling the T-shaped slide 77, the suction nozzle 71 generates negative pressure for adsorbing and fixing the nut 8 to the support ring 70. Through the cooperation of the support limiting component 9 and the tightening and fixing component 3, the vertical push plate 92 extends into The bottom groove 93 pushes the sliding connecting plate 310, driving the conical plate 32 to move up the inner groove 31, driving the movable plate 34 to expand outward, and the sliding side plate 35 squeezes the return spring 36. At the same time, the clamping plate 37 moves out of the placement groove 38 and presses against the inner side of the nut 8, realizing mechanical limitation of the inner side of the nut 8, effectively preventing the nut 8 from rotating. By providing the first anti-rotation component 6 and the second anti-rotation component 7, the fixing ring 61 of the first anti-rotation component 6 is embedded in the docking groove 63, and the first friction protrusion 62 and the second friction protrusion 64 form a friction lock; the second anti-rotation component 7 pulls the T-shaped slide plate 77 to make The sliding insert 95 is fixed in the card slot 98, and the piston plate 75 moves in the internal cavity 74 to stretch the built-in spring 76, and the connected suction nozzle 71 is used to generate negative pressure to adsorb the lower end of the nut 8, realizing a multi-dimensional anti-loosening design, which effectively improves the stability of the nut 8. While the vertical push plate 92 pushes the fixing component 3 to work, the contact between the first friction protrusion 62 and the second friction protrusion 64 is achieved, and the suction nozzle 71 contacts the lower end of the nut 8. By pulling the T-shaped slide 77, not only the fixation between the second anti-rotation component 7 and the screw 2 is achieved, but also negative pressure adsorption is triggered, which simplifies the operation process and improves installation efficiency.

[0043] like Figure 3 as well as Figure 4 As shown, the first anti-rotation component 6 also includes a fixing ring 61 fixedly installed at the lower end of the nut 8 and a docking groove 63 provided on the support ring 70 for the fixing ring 61 to extend into. A first friction protrusion 62 is provided on the fixing ring 61, and a second friction protrusion 64 is provided on the docking groove 63. The fixing ring 61 of the first anti-rotation component 6 is embedded in the docking groove 63, and the first friction protrusion 62 and the second friction protrusion 64 form a friction lock.

[0044] like Figures 9 to 13As shown, the second anti-rotation component 7 also includes an annular cavity plate 72 fixedly mounted on the support ring 70, and a plurality of suction nozzles 71 are connected to the annular cavity plate 72. Two support connecting plates 73 are also connected to the annular cavity plate 72. An internal cavity 74 is opened inside the support connecting plate 73, and a piston plate 75 is slidably connected inside the internal cavity 74. One end of the piston plate 75 is fixedly connected to a built-in spring 76, and the other end of the built-in spring 76 is fixedly connected to the inside of the internal cavity 74. The end of the piston plate 75 away from the built-in spring 76 is fixedly connected to a T-shaped slide plate 77, and a sliding support plate 78 is fixedly connected between the two support connecting plates 73. A T-shaped slide plate 77 is slidably connected to the sliding support plate 78. The suction nozzle 71 abuts against the lower end of the nut 8, and the annular cavity plate 72 is connected to the suction nozzle 71 to form a vacuum adsorption channel. When the T-shaped slide plate 77 is pulled, the suction nozzle 71 generates a negative pressure adsorption force.

[0045] like Figure 6 as well as Figure 7 As shown, the tightening and fixing component 3 includes an internal groove 31 opened in the screw rod 2, a conical plate 32 slidably connected in the internal groove 31, a movable plate 34 is slidably connected to the inclined surface of the conical plate 32, and the movable plate 34 is fixedly connected to a tightening plate 37 at one end away from the conical plate 32. The tightening and fixing component 3 also includes a placement groove 38 and a square groove 39 opened in the screw rod 2. The placement groove 38 is used to accommodate the tightening plate 37. A return spring 36 is provided in the square groove 39. One end of the return spring 36 is connected to the inner wall of the square groove 39, and the other end of the return spring 36 is connected to a sliding side plate 35. The sliding side plate 35 is fixedly connected to the movable plate 34. The upper end of the conical plate 32 is fixedly connected to the connecting spring 33, and the lower end of the conical plate 32 is fixedly connected to the sliding connecting plate 310. The sliding connecting plate 310 is slidably connected to the inside of the screw rod 2.

[0046] like Figure 6 、 Figure 12 as well as Figure 13 As shown, the support and limiting assembly 9 also includes a support cross plate 91 fixedly mounted on the support connecting plate 73, a slot 98 opened at one end of the T-shaped slide 77, and a fixed plate 94 fixedly mounted at the lower end of the screw rod 2. Two sliding plug plates 95 are slidably connected to the fixed plate 94. One end of the sliding plug plate 95 is fixedly connected to a connecting square plate 96. A middle spring 97 is fixedly connected between the connecting square plate 96 and the fixed plate 94. The two sliding plug plates 95 can be respectively extended into the two slots 98. The lower end of the screw rod 2 is provided with a bottom groove 93 for the vertical push plate 92 to extend into. A sliding connecting plate 310 is slidably connected in the bottom groove 93, and the vertical push plate 92 abuts against the sliding connecting plate 310.

[0047] In actual use, the screw rod 2 is passed through the through hole on the connecting member 4, the nut 8 is turned onto the screw rod 2, the connecting member 4 is between the nut 8 and the nut 8, the support ring 70 is sleeved on the screw rod 2, and the vertical push plate 92 extends into the bottom groove 93. During this process, the upper end of the vertical push plate 92 contacts the lower end of the sliding connecting plate 310 and drives the sliding connecting plate 310 to move upward. The sliding connecting plate 310 drives the conical plate 32 to move upward in the internal groove 31. During the movement of the conical plate 32, the moving plates 34 on both sides are driven away from each other, and the sliding side plates 35 slide along with the moving plate 34. , the sliding side plate 35 pushes the return spring 36, and the return spring 36 is squeezed. At the same time, the moving plate 34 drives the clamping plate 37 to move out of the placement groove 38, and the clamping plate 37 is pressed against the inner side of the nut 8, thereby limiting the nut 8 and preventing the nut 8 from rotating. At the same time, the support ring 70 is under the nut 8, and the fixing ring 61 extends into the docking groove 63. The first friction protrusion 62 and the second friction protrusion 64 contact to form a friction lock, which further improves the stability of the nut 8. At this time, multiple suction nozzles 71 are tightly attached to the lower end of the nut 8, and by pulling the T-shaped slides 77 on both sides, as shown Figure 12 As shown, the two sliding plates 95 are respectively inserted into the two slots 98 to achieve the limiting fixation of the T-shaped slide 77, thereby achieving the fixing of the second anti-rotation component 7 on the screw 2. During the movement of the T-shaped slide 77, the piston plate 75 is driven to move in the internal cavity 74, and the built-in spring 76 is stretched, and a negative pressure is formed in the internal cavity 74. Since the suction nozzle 71 is connected to the internal cavity 74, a negative pressure can be generated in the suction nozzle 71, so that the suction nozzle 71 is tightly adsorbed on the lower end of the nut 8, thereby achieving the limiting of the nut 8 again. Through multiple limiting, the stability of the nut 8 is guaranteed.

[0048] 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. A high-speed railway bolt assembly with anti-deformation and stable connection, comprising a bolt head (1), a screw rod (2) and a nut (8), characterized in that: Also includes: A support ring (70) is sleeved on the screw (2) and is used to limit the position of the nut (8); A tightening and fixing assembly (3) is arranged inside the screw rod (2) and is used to tighten the nut (8) from the inside to limit its displacement; An anti-rotation device is provided on the nut (8) and the support ring (70), the anti-rotation device comprising a support limit assembly (9), a first anti-rotation assembly (6) and a second anti-rotation assembly (7); wherein: When the second anti-rotation component (7) is installed at the lower end of the screw rod (2), the vertical push plate (92) in the support and limiting component (9) is inserted into the bottom groove (93) at the bottom of the screw rod (2), driving the pressing and fixing component (3) to limit the nut (8); The first anti-rotation component (6) comprises a second friction protrusion (64) provided on the support ring (70) and a first friction protrusion (62) provided on the nut (8), and the two form a friction lock when in contact; The second anti-rotation component (7) comprises a suction nozzle (71) in contact with the lower end of the nut (8) and a movable T-shaped slide (77), and by pulling the T-shaped slide (77), the suction nozzle (71) generates negative pressure for adsorbing and fixing the nut (8) and the support ring (70); The first anti-rotation assembly (6) further comprises a fixing ring (61) fixedly mounted on the lower end of the nut (8) and a docking groove (63) provided on the support ring (70) for the fixing ring (61) to extend into, the fixing ring (61) being provided with a first friction protrusion (62), and the docking groove (63) being provided with a second friction protrusion (64); The second anti-rotation assembly (7) further comprises an annular cavity plate (72) fixedly mounted on the support ring (70), the annular cavity plate (72) being connected to a plurality of suction nozzles (71), and the annular cavity plate (72) being further connected to two supporting connecting plates (73); An internal cavity (74) is provided inside the supporting connecting plate (73), a piston plate (75) is slidably connected inside the internal cavity (74), one end of the piston plate (75) is fixedly connected to an internal spring (76), and the other end of the internal spring (76) is fixedly connected inside the internal cavity (74); The support and limit assembly (9) further comprises a support transverse plate (91) fixedly mounted on the support connecting plate (73), a slot (98) provided at one end of the T-shaped slide plate (77), and a fixed plate (94) fixedly mounted at the lower end of the screw rod (2), wherein two sliding inserts (95) are slidably connected to the fixed plate (94), and one end of the sliding insert (95) is fixedly connected to a connecting square plate (96); A middle spring (97) is fixedly connected between the connecting square plate (96) and the fixed plate (94), and the two sliding insert plates (95) can respectively extend into the two card slots (98).

2. The anti-deformation and stable connection high-speed rail bolt assembly according to claim 1, characterized in that: A T-shaped slide plate (77) is fixedly connected to one end of the piston plate (75) away from the built-in spring (76), a sliding support plate (78) is fixedly connected between the two supporting connecting plates (73), and a T-shaped slide plate (77) is slidably connected to the sliding support plate (78).

3. The anti-deformation and stable connection high-speed rail bolt assembly according to claim 2, characterized in that: The suction nozzle (71) abuts against the lower end of the nut (8), and the annular cavity plate (72) is connected to the suction nozzle (71) to form a vacuum adsorption channel. When the T-shaped slide (77) is pulled, the suction nozzle (71) generates a negative pressure adsorption force.

4. The high-speed railway bolt assembly with anti-deformation and stable connection according to claim 1, characterized in that: The abutting and fixing assembly (3) comprises an internal groove (31) provided inside the screw rod (2), a conical plate (32) slidably connected to the internal groove (31), a movable plate (34) slidably connected to the inclined surface of the conical plate (32), and a abutting plate (37) fixedly connected to one end of the movable plate (34) away from the conical plate (32).

5. The high-speed railway bolt assembly with anti-deformation and stable connection according to claim 4, characterized in that: The abutting and fixing assembly (3) further comprises a placement groove (38) and a square groove (39) provided on the screw rod (2), wherein the placement groove (38) is used to accommodate the abutting plate (37), and a return spring (36) is provided in the square groove (39), one end of the return spring (36) is connected to the inner wall of the square groove (39), and the other end of the return spring (36) is connected to the sliding side plate (35).

6. The anti-deformation and stable connection high-speed rail bolt assembly according to claim 5, characterized in that: The sliding side plate (35) is fixedly connected to the movable plate (34), the upper end of the conical plate (32) is fixedly connected to a connecting spring (33), the lower end of the conical plate (32) is fixedly connected to a sliding connecting plate (310), and the sliding connecting plate (310) is slidably connected inside the screw rod (2).

7. The anti-deformation and stable connection high-speed rail bolt assembly according to claim 1, characterized in that: The lower end of the screw rod (2) is provided with a bottom groove (93) for the vertical push plate (92) to extend into, and a sliding connecting plate (310) is slidably connected in the bottom groove (93), and the vertical push plate (92) abuts against the sliding connecting plate (310).

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