Vibration damper for rocket body transport vehicle

Abstract

The invention relates to the technical field of vibration damping devices, in particular to a rocket body transport vehicle vibration damping device which comprises a base, a first vibration damper and a second vibration damper. The base is fixed to the upper side of the suspension, one end of the first shock absorber is fixedly connected with the middle of the base, and the other end of the first shock absorber is fixedly connected with a frame. Mounting grooves are formed in the side face, close to the frame, of the base and located on the two sides of the first shock absorber, the second shock absorbers are arranged in the mounting grooves, and the shock absorption ends of the second shock absorbers are connected with the shock absorption end of the first shock absorber. In the working process, the overall vibration reduction effect of the semitrailer can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vibration damping devices, and particularly to a vibration damping device for a rocket body transport vehicle. Background Art

[0002] In recent years, with the booming development of the aerospace industry, especially the development of aerospace enterprises, the rocket models have been updated and iterated more quickly. There are more and more rocket models to be transported, and the requirements for transport vehicles are also getting higher and higher. After the rocket is developed, it is necessary to transfer and transport the rocket body and the spacecraft from the vertical assembly and test workshop to in front of the launch tower. In the prior art, the methods for transporting the rocket body and the spacecraft generally include horizontal transportation and vertical transportation. When transporting horizontally, before reaching the launch tower, the rocket body needs to be converted from a horizontal state to a vertical state. After being erected, the rocket body needs to be detected again. And vertical transportation is to vertically transport each part of the rocket body separately.

[0003] In the prior art, in order to reduce costs, semi-trailers are generally used for transportation. During the transportation process, it is necessary to ensure the stability of the semi-trailer. In the semi-trailers in the prior art, a vibration damping structure is provided between the vehicle frame and the suspension, but the actual vibration damping effect is not good, and it needs to be further improved to improve the overall vibration damping effect of the semi-trailer. Summary of the Invention

[0004] (I) Technical Problems to be Solved Aiming at the deficiencies of the prior art, the present invention provides a vibration damping device for a rocket body transport vehicle, which can improve the overall vibration damping effect of the semi-trailer during the working process.

[0005] (II) Technical Solutions To achieve the above object, the embodiment of the present application provides a vibration damping device for a rocket body transport vehicle, including a base, a first shock absorber and a second shock absorber; the base is fixed on the upper side of the suspension, one end of the first shock absorber is fixedly connected to the middle of the base, and the other end is fixedly connected to the vehicle frame; mounting grooves are formed on both sides of the first shock absorber on one side of the base close to the vehicle frame, and the second shock absorber is arranged in the mounting groove, and the shock damping end of the second shock absorber is connected to the shock damping end of the first shock absorber.

[0006] Preferably, the first shock absorber includes a buffer sleeve, a hydraulic cylinder barrel and a first shock spring; the buffer sleeve is the shock damping end, one end of the buffer sleeve is closed and is connected to the vehicle frame; the other end of the buffer sleeve forms a mounting port and is slidably connected to the hydraulic cylinder barrel through the mounting port; one end of the hydraulic cylinder barrel is located in the buffer sleeve, and the other end is fixed with a mounting seat, and the mounting seat is rotatably connected to the base; the first shock spring is sleeved outside the hydraulic cylinder barrel, one end of the first shock spring abuts against the mounting seat, and the other end abuts against the buffer sleeve.

[0007] Preferably, a piston rod is fixedly arranged inside the buffer sleeve and at the central axis position; the hydraulic cylinder barrel includes an outer oil storage cylinder barrel and an inner working cylinder barrel, and a closed oil storage interlayer is formed between the oil storage cylinder barrel and the working cylinder barrel. A plurality of first communication holes are arranged between the oil storage interlayer and the working cylinder barrel; a buffer valve is arranged at the bottom of the working cylinder barrel, and the buffer valve is located above the first communication holes; the lower end of the piston rod is located inside the working cylinder barrel, and the piston rod is slidably and sealingly connected to the upper end of the working cylinder barrel; a piston block is fixedly arranged on the piston rod, and the working cylinder barrels on the upper and lower sides of the piston rod are communicated through the piston block.

[0008] Preferably, an installation rod is integrally formed at the lower end of the piston rod, and the diameter of the installation rod is smaller than that of the piston rod; the piston block is circular and is fixedly arranged on the installation rod. An annular sealing groove is formed on the circumferential surface of the piston block, and a sealing ring is arranged in the sealing groove; a plurality of second communication holes are formed in the piston block, the second communication holes are parallel to the length direction of the piston rod, and the second communication holes penetrate through the upper and lower end faces of the piston block; a control cover plate is arranged at one end of the piston block away from the buffer valve. A sliding connection hole is formed in the middle of the control cover plate, and the control cover plate is slidably connected to the installation rod through the sliding connection hole; a plurality of conical columns are integrally formed on one side surface of the control cover plate close to the piston block, the conical columns are conical, the conical columns correspond to the second communication holes one by one, a self-locking nut is threadedly connected to the installation rod, the self-locking nut is located at one end of the control cover plate away from the piston block, and the self-locking nut adjusts the distance between the control cover plate and the piston block so that the tip of the conical column is kept inside the second communication hole, and the conical column can close or open the second communication hole.

[0009] Preferably, the buffer valve is fixedly arranged at the lower end of the working cylinder barrel, and a plurality of third communication holes are spaced apart on the buffer valve. The diameter of the third communication holes is smaller than that of the first communication holes and the second communication holes.

[0010] Preferably, the second shock absorber includes a guide post, a first guide block, a connecting arm and a second shock-absorbing spring; an end support block is integrally formed on the base and at one end of the installation groove away from the first shock absorber, and a middle support block is formed at one end close to the first shock absorber; One end of the guiding column is connected to the end support block, and the other end is fixedly connected to the middle support block; a first guiding hole is formed in the middle of the first guiding block, and the first guiding block is slidably connected to the guiding column through the first guiding hole; mounting blocks are integrally formed on both sides of the buffer sleeve close to the end support block, one end of the connecting arm is rotatably connected to the mounting block, and the other end is rotatably connected to the first guiding block; the second damping spring is sleeved on the guiding column, and the second damping spring is located between the first guiding block and the end support block.

[0011] Preferably, an adjusting assembly for abutting and supporting the end of the second damping spring and adjusting the abutting position is provided on the end support block.

[0012] Preferably, an installation cavity is formed at one end of the end support block close to the middle support block, and the installation cavity is rectangular; the adjusting assembly includes a positioning block and a positioning screw; the positioning block is fitted in the installation cavity, a second guiding hole is formed at one end of the positioning block close to the middle support block, and the guiding column is slidably connected through the second guiding hole, and the end of the second damping spring away from the first guiding block abuts against the positioning block; an adjusting threaded hole is formed in the end support block, the length direction of the adjusting threaded hole is parallel to the length direction of the guiding column, and the adjusting threaded hole communicates with the installation cavity; the positioning screw is threadedly connected to the adjusting threaded hole, one end of the positioning screw is located outside the end support block and is integrally formed with a nut, and the other end is located in the installation cavity and abuts against the positioning block.

[0013] Preferably, a second guiding block is slidably connected to the guiding column, and an auxiliary support arm is rotatably connected between the second guiding block and the connecting arm; a third damping spring is sleeved on the guiding column, and the third damping spring is located between the second guiding block and the middle support block.

[0014] (III) Beneficial effects The present invention provides a shock absorber device for an arrow body transport vehicle. The first shock absorber and the second shock absorber are arranged to cooperate for shock absorption, thereby improving the overall shock absorption effect of the semi-trailer. Among them, the first shock absorber realizes shock absorption and buffering through the cooperation of the first buffer spring arranged on the outside and the hydraulic cylinder body arranged on the inside. Inside the hydraulic cylinder body, through the arranged oil storage interlayer, piston block and buffer valve, multi-stage buffering can be realized to provide the overall buffering effect. A second communication hole is opened on the piston block, and by adjusting the opening area of the second communication hole, the intensity of the buffering force provided is changed, and the intensity of shock absorption is adjusted. In the second shock absorber, through the connecting arms and auxiliary support arms arranged on both sides of the buffer sleeve, the vertical vibration force is converted into a horizontal acting force, and shock absorption is carried out in the horizontal direction through the second shock spring and the third shock spring. At the same time, through the arranged adjusting assembly, the abutting position of the end of the second shock spring can be adjusted, and then the compression degree of the second shock spring can be adjusted to realize the adjustment of the shock absorption intensity. Through the adjustment and cooperation of the first shock absorber and the second shock absorber, the shock absorption capacity can be controlled to achieve the best effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of a shock absorber device for an arrow body transport vehicle according to the present invention; Figure 2 is a cross-sectional view highlighting the first shock absorber of the present invention; Figure 3 For the present invention highlighting Figure 2 an enlarged view of the structure A in; Figure 4 is a cross-sectional view highlighting the second shock absorber of the present invention; Figure 5 is a cross-sectional view highlighting the adjusting assembly of the present invention.

[0016] Reference numerals in the drawings: 100, Base; 110, Installation groove; 120, End support block; 121, Installation cavity; 122, Adjusting threaded hole; 130, Middle support block; 200, First shock absorber; 210, Buffer sleeve; 211, Installation port; 212, Piston rod; 2121, Installation rod; 213, Installation block; 220, Hydraulic cylinder barrel; 221, Oil storage cylinder barrel; 222, Working cylinder barrel; 223, Oil storage interlayer; 224, First communication hole; 225, Buffer valve; 2251, Third communication hole; 226, Piston block; 2261, Sealing groove; 2262, Sealing ring; 2263, Second communication hole; 227, Control cover plate; 2271, Sliding connection hole; 2272, Conical column; 228, Self-locking nut; 230, First shock absorption spring; 240, Installation seat; 300, Second shock absorber; 310, Guide post; 320, First guide block; 321, First guide hole; 330, Connecting arm; 340, Second shock absorption spring; 350, Adjusting assembly; 351, Positioning block; 3511, Second guide hole; 352, Positioning screw; 3521, Nut; 360, Second guide block; 370, Auxiliary support arm; 380, Third shock absorption spring. Detailed implementation manners

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] Embodiment The present invention provides a shock absorption device for an arrow body transport vehicle. Refer to Figures 1-5 , which includes a base 100, a first shock absorber 200 and a second shock absorber 300. During installation, the shock absorption device is installed between the vehicle frame and the suspension. The first shock absorber 200 and the second shock absorber 300 cooperate to provide a shock absorption effect.

[0019] Specifically, the base 100 is fixed to the upper side of the suspension. One end of the first shock absorber 200 is fixedly connected to the middle of the base 100, and the other end is fixedly connected to the vehicle frame; installation grooves 110 are opened on both sides of the first shock absorber 200 on the side of the base 100 close to the vehicle frame. The second shock absorber 300 is arranged in the installation groove 110, and the shock absorption end of the second shock absorber 300 is connected to the shock absorption end of the first shock absorber 200. It should be noted that the shock absorption end is the end far from the vibration source.

[0020] The first shock absorber 200 includes a buffer sleeve 210, a hydraulic cylinder barrel 220, and a first shock spring 230; among them, the buffer sleeve 210 is the shock-absorbing end. One end of the buffer sleeve 210 is closed and connected to the vehicle frame; the other end of the buffer sleeve 210 forms an installation port 211, and the hydraulic cylinder barrel 220 is slidably connected through the installation port 211.

[0021] One end of the hydraulic cylinder barrel 220 is located inside the buffer sleeve 210, and an installation seat 240 is fixed at the other end, and the installation seat 240 is rotatably connected to the base 100; it should be noted that a rotating shaft is provided between the installation seat 240 and the base 100, and the rotating shaft is horizontally arranged so that the installation seat 240 can swing in the vertical plane.

[0022] A first shock spring 230 is sleeved outside the hydraulic cylinder barrel 220. One end of the first shock spring 230 abuts against the installation seat 240, and the other end abuts against the buffer sleeve 210. The first shock spring 230 outside serves the purpose of shock absorption. The hydraulic cylinder barrel 220 serves the purpose of buffering, and the two cooperate to achieve the purpose of shock absorption.

[0023] A piston rod 212 is fixed inside the buffer sleeve 210 and at the central axis position, and the piston rod 212 and the hydraulic sleeve cooperate to serve the purpose of buffering. The upper end of the buffer sleeve 210 is detachably and sealed with an end cover.

[0024] The hydraulic cylinder barrel 220 includes an outer oil storage cylinder barrel 221 and an inner working cylinder barrel 222. A closed oil storage interlayer 223 is formed between the oil storage cylinder barrel 221 and the working cylinder barrel 222, and a plurality of first communication holes 224 are provided between the oil storage interlayer 223 and the working cylinder barrel 222. Among them, hydraulic oil is filled in the working cylinder barrel 222, and part of the oil storage interlayer 223 is filled with hydraulic oil and part is filled with nitrogen.

[0025] A buffer valve 225 is provided at the bottom of the working cylinder barrel 222, and the buffer valve 225 is located above the first communication hole 224; the lower end of the piston rod 212 is located inside the working cylinder barrel 222, and the piston rod 212 is slidably and sealedly connected to the upper end of the working cylinder barrel 222.

[0026] A piston block 226 is fixed on the piston rod 212, and the upper and lower sides of the working cylinder barrel 222 are communicated through the piston block 226. When the piston rod 212 moves, the hydraulic oil will be compressed, thereby serving the purpose of buffering.

[0027] An installation rod 2121 is integrally formed at the lower end of the piston rod 212, and the diameter of the installation rod 2121 is smaller than that of the piston rod 212.

[0028] The piston block 226 is circular and fixed on the mounting rod 2121. An annular sealing groove 2261 is formed on the circumferential surface of the piston block 226. A sealing ring 2262 is arranged in the sealing groove 2261, and the sealing ring 2262 abuts against the inner wall of the working cylinder 222.

[0029] A plurality of second communication holes 2263 are formed in the piston block 226. The second communication holes 2263 are parallel to the length direction of the piston rod 212, and the second communication holes 2263 penetrate through the upper and lower end faces of the piston block 226. When the piston block 226 moves along with the piston rod 212, the hydraulic oil inside flows through the second communication holes 2263.

[0030] A control cover plate 227 is arranged at one end of the piston block 226 away from the buffer valve 225. The control cover plate 227 is of a hollow structure, and its buoyancy in the hydraulic oil is greater than its gravity. A sliding hole 2271 is formed in the middle of the control cover plate 227, and the control cover plate 227 is slidably connected to the mounting rod 2121 through the sliding hole 2271. A plurality of tapered columns 2272 are integrally formed on one side of the control cover plate 227 close to the piston block 226. The tapered columns 2272 are conical, and the tapered columns 2272 correspond to the second communication holes 2263 one by one. A self-locking nut 228 is threadedly connected to the mounting rod 2121. The self-locking nut 228 is located at one end of the control cover plate 227 away from the piston block 226. When adjusting the position of the self-locking nut 228, the distance between the control cover plate 227 and the piston block 226 can be adjusted through the self-locking nut 228, so that the tip of the tapered column 2272 is kept in the second communication hole 2263, and the maximum area of the opened second communication hole 2263 is controlled. The tapered column 2272 can close or open the second communication hole 2263. By arranging the control cover plate 227, the communication area of the second communication hole 2263 can be adjusted, and thus, during the vibration process, the intensity of the buffer force provided can be changed, and further the intensity of vibration reduction can be adjusted.

[0031] The buffer valve 225 is fixed at the lower end of the working cylinder 222. A plurality of third communication holes 2251 are spaced apart on the buffer valve 225. The diameter of the third communication hole 2251 is smaller than the diameters of the first communication hole 224 and the second communication hole 2263. By setting the diameter of the third communication hole 2251 to be the smallest, during the buffering process, when the piston block 226 moves in the vertical direction, the flow rates between the piston block 226 and the buffer valve 225 are not equal, and thus a further buffer effect will be formed between the two, achieving the purpose of improving vibration reduction.

[0032] The second shock absorber 300 includes a guide post 310, a first guide block 320, a connecting arm 330 and a second shock spring 340. Among them, the connecting arm 330 is the shock-absorbing end.

[0033] An end support block 120 is integrally formed at one end of the mounting groove 110 on the base 100 away from the first shock absorber 200, and a middle support block 130 is formed at one end close to the first shock absorber 200.

[0034] One end of the guide post 310 is connected to the end support block 120, and the other end is fixedly connected to the middle support block 130; a first guide hole 321 is formed in the middle of the first guide block 320, and the first guide block 320 is slidably connected to the guide post 310 through the first guide hole 321; mounting blocks 213 are integrally formed on both sides of the buffer sleeve 210 close to the end support block 120, one end of the connecting arm 330 is rotatably connected to the mounting block 213, and the other end is rotatably connected to the first guide block 320. The second shock absorption spring 340 is sleeved on the guide post 310, and the second shock absorption spring 340 is located between the first guide block 320 and the end support block 120.

[0035] Specifically, an adjusting assembly 350 for abutting and supporting the end of the second shock absorption spring 340 and adjusting the abutting position is provided on the end support block 120.

[0036] An installation cavity 121 is formed at one end of the end support block 120 close to the middle support block 130, and the installation cavity 121 is rectangular.

[0037] The adjusting assembly 350 includes a positioning block 351 and a positioning screw 352. The positioning block 351 is fitted into the installation cavity 121. A second guide hole 3511 is formed at one end of the positioning block 351 close to the middle support block 130, and the positioning block 351 is slidably connected to the guide post 310 through the second guide hole 3511. The end of the second shock absorption spring 340 away from the first guide block 320 abuts against the positioning block 351.

[0038] An adjusting threaded hole 122 is formed in the end support block 120. The length direction of the adjusting threaded hole 122 is parallel to the length direction of the guide post 310, and the adjusting threaded hole 122 communicates with the installation cavity 121.

[0039] The positioning screw 352 is threadedly connected to the adjusting threaded hole 122. One end of the positioning screw 352 is located outside the end support block 120, and a nut 3521 is integrally formed. The other end is located in the installation cavity 121 and abuts against the positioning block 351. By providing the adjusting assembly 350, the shock absorption strength of the second shock absorber 300 can be adjusted.

[0040] In one embodiment, in order to further improve the shock absorption effect, a second guide block 360 is slidably connected to the guide post 310, and an auxiliary support arm 370 is rotatably connected between the second guide block 360 and the connecting arm 330.

[0041] A third damping spring 380 is sleeved on the guiding column 310, and the third damping spring 380 is located between the second guiding block 360 and the middle support block 130.

[0042] The present invention provides a shock-absorbing device for an arrow body transport vehicle. The first shock absorber 200 and the second shock absorber 300 are provided and cooperate to perform shock absorption, thereby improving the overall shock-absorbing effect of the semi-trailer. Among them, the first shock absorber 200 realizes shock absorption and buffering through the cooperation of the first buffer spring arranged on the outside and the hydraulic cylinder body arranged on the inside. Inside the hydraulic cylinder body, through the provided oil storage interlayer 223, piston block 226 and buffer valve 225, multi-stage buffering can be realized to provide an overall buffering effect. A second communication hole 2263 is opened on the piston block 226, and by adjusting the opening area of the second communication hole 2263, the intensity of the buffering force provided is changed, and the intensity of shock absorption is adjusted. In the second shock absorber 300, through the connecting arms 330 and auxiliary support arms 370 arranged on both sides of the buffer sleeve 210, the vertical vibration force is converted into a horizontal acting force, and shock absorption is carried out in the horizontal direction through the second damping spring 340 and the third damping spring 380. At the same time, through the provided adjusting assembly 350, the abutting position of the end of the second damping spring 340 can be adjusted, and then the compression degree of the second damping spring 340 can be adjusted to realize the adjustment of the shock-absorbing intensity. Through the adjustment and cooperation of the first shock absorber 200 and the second shock absorber 300, the shock-absorbing capacity can be controlled to achieve the best effect.

[0043] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0044] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection, an electrical connection. It can be directly connected, or indirectly connected through an intermediate medium. It can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. Without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0045] The above-described embodiments merely represent the implementation manners of the present invention. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent for the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention shall be subject to the appended claims.

Claims

1. A shock-absorbing device for an arrow body transport vehicle, characterized in that: It includes a base (100), a first shock absorber (200) and a second shock absorber (300); The base (100) is fixed to the upper side of the suspension. One end of the first shock absorber (200) is fixedly connected to the middle of the base (100), and the other end is fixedly connected to the vehicle frame; On one side of the base (100) close to the vehicle frame and on both sides of the first shock absorber (200), mounting grooves (110) are provided. The second shock absorber (300) is arranged in the mounting grooves (110), and the shock-absorbing end of the second shock absorber (300) is connected to the shock-absorbing end of the first shock absorber (200).

2. The shock absorption device for an arrow body transport vehicle according to claim 1, wherein: The first shock absorber (200) includes a buffer sleeve (210), a hydraulic cylinder barrel (220) and a first shock-absorbing spring (230); The buffer sleeve (210) is the shock-absorbing end. One end of the buffer sleeve (210) is closed and connected to the vehicle frame; the other end of the buffer sleeve (210) forms a mounting opening (211) and is slidably connected to the hydraulic cylinder barrel (220) through the mounting opening (211); One end of the hydraulic cylinder barrel (220) is located inside the buffer sleeve (210), and the other end is fixed with a mounting seat (240), and the mounting seat (240) is rotatably connected to the base (100); the first shock-absorbing spring (230) is sleeved outside the hydraulic cylinder barrel (220), one end of the first shock-absorbing spring (230) abuts against the mounting seat (240), and the other end abuts against the buffer sleeve (210).

3. The shock absorption device for an arrow body transport vehicle according to claim 2, characterized in that: A piston rod (212) is fixed inside the buffer sleeve (210) and at the central axis position; The hydraulic cylinder barrel (220) includes an outer oil storage cylinder barrel (221) and an inner working cylinder barrel (222). A closed oil storage interlayer (223) is formed between the oil storage cylinder barrel (221) and the working cylinder barrel (222), and a plurality of first communication holes (224) are provided between the oil storage interlayer (223) and the working cylinder barrel (222); A buffer valve (225) is arranged at the bottom of the working cylinder barrel (222), and the buffer valve (225) is located above the first communication hole (224); The lower end of the piston rod (212) is located inside the working cylinder barrel (222), and the piston rod (212) is slidably and sealingly connected to the upper end of the working cylinder barrel (222); a piston block (226) is fixed on the piston rod (212), and the upper and lower sides of the working cylinder barrel (222) are communicated through the piston block (226).

4. The shock absorber device for an arrow body transport vehicle according to claim 3, characterized in that: An installation rod (2121) is integrally formed at the lower end of the piston rod (212), and the diameter of the installation rod (2121) is smaller than the diameter of the piston rod (212); The piston block (226) is circular and fixed on the installation rod (2121). An annular sealing groove (2261) is formed on the circumferential surface of the piston block (226), and a sealing ring (2262) is arranged in the sealing groove (2261); A plurality of second communication holes (2263) are formed in the piston block (226). The second communication holes (2263) are parallel to the length direction of the piston rod (212), and the second communication holes (2263) penetrate through the upper and lower end faces of the piston block (226). A control cover plate (227) is provided at one end of the piston block (226) away from the buffer valve (225). A sliding hole (2271) is formed in the middle of the control cover plate (227), and the control cover plate (227) is slidably connected to the mounting rod (2121) through the sliding hole (2271). A plurality of tapered columns (2272) are integrally formed on one side of the control cover plate (227) close to the piston block (226). The tapered columns (2272) are conical. The tapered columns (2272) correspond to the second communication holes (2263) one by one. A self-locking nut (228) is threadedly connected to the mounting rod (2121). The self-locking nut (228) is located at one end of the control cover plate (227) away from the piston block (226). The self-locking nut (228) adjusts the distance between the control cover plate (227) and the piston block (226) so that the tip of the tapered column (2272) is kept in the second communication hole (2263), and the tapered column (2272) can close or open the second communication hole (2263).

5. The shock absorber device for an arrow body transport vehicle according to claim 4, wherein: The buffer valve (225) is fixed to the lower end of the working cylinder barrel (222). A plurality of third communication holes (2251) are spaced apart on the buffer valve (225). The diameter of the third communication hole (2251) is smaller than the diameters of the first communication hole (224) and the second communication hole (2263).

6. The shock absorber device for an arrow body transport vehicle according to claim 2, characterized in that: The second shock absorber (300) includes a guide post (310), a first guide block (320), a connecting arm (330), and a second shock-absorbing spring (340). An end support block (120) is integrally formed on the base (100) and at one end of the mounting groove (110) away from the first shock absorber (200), and a middle support block (130) is formed at one end close to the first shock absorber (200). One end of the guide post (310) is connected to the end support block (120), and the other end is fixedly connected to the middle support block (130). A first guide hole (321) is formed in the middle of the first guide block (320), and the first guide block (320) is slidably connected to the guide post (310) through the first guide hole (321). Mounting blocks (213) are integrally formed on both sides of the buffer sleeve (210) close to the end support block (120). One end of the connecting arm (330) is rotatably connected to the mounting block (213), and the other end is rotatably connected to the first guide block (320). The second shock-absorbing spring (340) is sleeved on the guide post (310), and the second shock-absorbing spring (340) is located between the first guide block (320) and the end support block (120).

7. The shock absorber device for an arrow body transporter according to claim 6, characterized in that: An adjusting assembly (350) for abutting and supporting the end of the second damping spring (340) and adjusting the abutting position is provided on the end support block (120).

8. The shock absorber device for an arrow body transporter according to claim 7, characterized in that: An installation cavity (121) is formed at one end of the end support block (120) close to the middle support block (130), and the installation cavity (121) is rectangular; The adjusting assembly (350) includes a positioning block (351) and a positioning screw (352); The positioning block (351) is fitted in the installation cavity (121). A second guiding hole (3511) is formed at one end of the positioning block (351) close to the middle support block (130), and the guiding column (310) is slidably connected through the second guiding hole (3511). One end of the second damping spring (340) away from the first guiding block (320) abuts against the positioning block (351); An adjusting threaded hole (122) is formed in the end support block (120), and the length direction of the adjusting threaded hole (122) is parallel to the length direction of the guiding column (310), and the adjusting threaded hole (122) communicates with the installation cavity (121); The positioning screw (352) is threadedly connected to the adjusting threaded hole (122). One end of the positioning screw (352) is located outside the end support block (120) and is integrally formed with a nut (3521), and the other end is located in the installation cavity (121) and abuts against the positioning block (351).

9. The vibration damping device for an arrow body transport vehicle according to claim 6, characterized in that: A second guiding block (360) is slidably connected to the guiding column (310). An auxiliary support arm (370) is rotatably connected between the second guiding block (360) and the connecting arm (330); A third damping spring (380) is sleeved on the guiding column (310), and the third damping spring (380) is located between the second guiding block (360) and the middle support block (130).

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