A non-powered vehicle including a drag damping system

Abstract

The present invention belongs to the technical field of vehicle operation control, and discloses a non-powered vehicle including a drag damping system, which comprises a drag damping system, a chassis, wheels and an axle; the axle passes through the chassis and is in clearance fit with the chassis; both ends of the axle are respectively fixedly connected with a wheel; the drag damping system includes an inner wheel disc, an inner damping ring, an outer damping ring and a damping fixing plate; the damping fixing plate is fixed on the chassis, the inner damping ring is located inside the outer damping ring, and the inner wheel disc is arranged inside the inner damping ring; a circle of ratchet teeth are arranged on the inner ring of the inner damping ring and the circumferential surface of the inner wheel disc; a kidney-shaped through hole is arranged on the inner wheel disc; a through hole A is arranged on the damping fixing plate, the axle sequentially passes through the through hole A and the kidney-shaped through hole, and the axle is in clearance fit with the through hole A. The present invention avoids the safety risks such as unhooking, squeezing, tail whipping, overturning, etc. caused by the attitude out-of-control of the non-powered vehicle due to the acceleration or deceleration of the towing vehicle, as well as the problems of impact or collision with the towing vehicle due to inertia.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicle operation control and relates to a non-powered vehicle including a towing damping system. Background Art

[0002] During vehicle driving, fluctuations in vehicle speed, complex and changeable road conditions, and driving operations such as turning will trigger uncontrollable vehicle inertial forces, which pose a severe challenge to vehicle safety. This problem is particularly prominent in the field of towing non-powered vehicles. Although current vehicle control technologies have certain accumulations in the safety technology of trailers, the negative impact of vehicle inertial forces on safe driving has not been fundamentally solved, and further optimization and improvement are urgently needed.

[0003] Patent CN218536236U discloses a buffer braking device for a trailer, which uses a spring damping buffer braking device to achieve a smooth braking buffer effect; Patent CN109823323A discloses a braking method suitable for special vehicles, which effectively avoids the impact or collision between the trailer and the tractor during emergency braking or deceleration through reasonable design of the drawbar assembly and the service braking assembly, thus eliminating potential safety hazards. However, these solutions still have certain limitations when dealing with specific scenarios, as follows:

[0004] (1) In the scenario of towing multiple non-powered vehicles, since these vehicles are often designed to be relatively flexible for easy disassembly and assembly, they usually do not have a braking device. This makes the above solutions effective in the case of single-section trailer towing, but difficult to apply in cases such as multiple non-powered trailers, because the braking system cannot be quickly disassembled and assembled, thus unable to provide an ideal braking effect.

[0005] (2) Although the above solutions have a certain buffering effect when dealing with emergency deceleration situations, in the case of the non-powered device accelerating suddenly due to terrain (such as a downhill slope section, such as a common bridge or a section with undulating ground), they cannot effectively avoid the problem of the original traction force constraint failure caused by the downhill acceleration of the non-powered vehicle, which may lead to serious safety risks such as the non-powered vehicle becoming unhooked, crowded, fishtailing, or overturning.

[0006] (3) The above solutions often require the driver in the tractor to perform active braking to implement, and their braking effect and safety largely depend on the driver's active braking behavior. Once the driver operates improperly, it is extremely easy to cause adverse consequences.

[0007] Therefore, it is of great significance to study a non-powered vehicle including a towing damping system to solve the above problems. Summary of the Invention

[0008] The object of the present invention is to solve the problems existing in the prior art and provide a non-powered vehicle including a drag damping system.

[0009] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0010] A non-powered vehicle including a drag damping system, the non-powered vehicle including a drag damping system, a chassis, wheels and an axle; the axle passes through the chassis and is in clearance fit with the chassis; both ends of the axle are respectively fixedly connected to a wheel;

[0011] The drag damping system includes an inner wheel disc, an inner damping ring, an outer damping ring and a damping fixing plate;

[0012] The damping fixing plate is vertically placed and fixed on the chassis; one side of the damping fixing plate is provided with a convex block A; the outer damping ring is of an annular structure and is fixed on the surface of the damping fixing plate provided with the convex block A; the central axis of the outer damping ring is perpendicular to the damping fixing plate;

[0013] The inner damping ring is of an annular structure; the inner damping ring is located inside the outer damping ring and the two are in transitional fit; a circle of ratchet teeth A is provided on the inner ring of the inner damping ring; the convex block A is located inside the inner damping ring;

[0014] The inner wheel disc is of a disc-shaped structure; a kidney-shaped through hole is provided on the inner wheel disc; a circle of ratchet teeth B is provided on the circumferential surface of the inner wheel disc;

[0015] One side of the inner wheel disc is provided with a convex block B; the inner wheel disc is arranged inside the inner damping ring, the convex block B is in contact with the damping fixing plate; the central axis of the inner wheel disc coincides with the central axis of the inner damping ring;

[0016] The cross-section of the axle is a kidney-shaped structure I; the cross-section of the kidney-shaped through hole is a kidney-shaped structure II;

[0017] The straight-edge length of the kidney-shaped structure II is greater than the straight-edge length of the kidney-shaped structure I; denote the distance between the two straight edges of the kidney-shaped structure I as a, and the distance between the two straight edges of the kidney-shaped structure II as b, and the range of the difference between b and a is 0.10 - 0.20 mm. When the axle rotates within this range, the inner wheel disc also rotates simultaneously;

[0018] The axle includes two rectangular surfaces where the straight edges are located and two curved surfaces, and the inner wall of the kidney-shaped through hole includes two curved inner side walls and two rectangular inner side walls where the straight edges are located;

[0019] When the inner wheel disc drives the inner damping ring to rotate, since the inner damping ring is located inside the outer damping ring and the two are in transitional fit; therefore, the frictional force between the inner damping ring and the outer damping ring hinders the rotation of the shaft, thereby hindering the movement of the non-powered vehicle. When the tractor accelerates, especially when accelerating downhill, the non-powered vehicle decelerates, thus avoiding safety risks such as unhooking, squeezing, tail-swinging, and overturning caused by the out-of-control attitude of the non-powered vehicle; when the tractor decelerates, the non-powered vehicle decelerates, avoiding the impact or collision of the non-powered vehicle with the tractor due to inertia and eliminating potential safety hazards;

[0020] Among them, the reason why the inner wheel disc can be thrown out when accelerating or decelerating is specifically as follows: During normal driving, the centripetal force of the rotation of the inner wheel disc is balanced. When there is an acceleration, an additional inertial force will appear, which will damage the rotational balance and cause lateral sliding.

[0021] As a preferred technical solution:

[0022] For a non-powered vehicle including a towing damping system as described above, a through hole A is provided on the damping fixing plate, and the through hole A is circular; the shaft sequentially passes through the through hole A and the waist-shaped through hole, and the shaft has a clearance fit with the through hole A, and one curved surface of the shaft is in contact with one curved inner side wall of the waist-shaped through hole; the shape design of the circular through hole A on the damping fixing plate can prevent the shaft from driving the damping fixing plate to rotate when rotating;

[0023] The cross-section of the shaft can also be strip-shaped, and instead of a waist-shaped through hole, a strip-shaped through hole is provided on the inner wheel disc; the cross-section of the shaft is denoted as strip-shaped structure I, and the cross-section of the strip-shaped through hole is denoted as strip-shaped structure II;

[0024] The long side of strip-shaped structure II is greater than the long side of strip-shaped structure I; the distance between the two long sides of strip-shaped structure I is denoted as c, and the distance between the two long sides of strip-shaped structure II is denoted as d, and the range of the difference between d and c is 0.10 - 0.20 mm;

[0025] At this time, the shaft includes two rectangular surfaces where the long sides are located and two surfaces where the short sides are located, and the inner wall of the strip-shaped through hole also includes two inner side walls where the short sides are located and two rectangular inner side walls where the long sides are located;

[0026] At this time, the shaft sequentially passes through the through hole A and the strip-shaped through hole, and the shaft has a clearance fit with the through hole A, and one surface where the short side of the shaft is located is in contact with one inner side wall where the short side of the strip-shaped through hole is located;

[0027] The unpowered vehicle with a drag damping system is connected to the tractor. When the tractor accelerates or decelerates, the inner disk moves due to inertia and contacts the inner damping ring through the engagement of ratchet tooth A and ratchet tooth B. Then, with the rotation of the shaft, the inner disk drives the inner damping ring to rotate; during the process of the inner disk driving the inner damping ring to rotate, bump A contacts bump B; when bump A contacts bump B, the movement direction of bump B is denoted as a, and the direction of the supporting force exerted by bump A on bump B through the contact surface is denoted as b. The included angle between a and b is less than 180 degrees, and the shaft is within the included angle range of a and b. That is, after bump A contacts bump B, under the action of force, the inner disk moves again, disengages from the inner damping ring, and moves towards the initial position.

[0028] For an unpowered vehicle with a drag damping system as described above, a spring ejector device is provided on the side of the inner disk without bump B. When the tractor accelerates, moves at a constant speed, or decelerates, the spring ejector device always contacts the shaft. The spring ejector device is used to apply pressure to the shaft to hinder the relative movement between the inner disk and the shaft; with such a design, when the tractor moving at a constant speed accelerates or decelerates slightly, the drag damping system cannot work properly, thus not affecting normal driving.

[0029] For an unpowered vehicle with a drag damping system as described above, the spring ejector device includes a fixed block, a fixing screw, a compression spring, and a sleeve.

[0030] The fixed block is fixed on the inner disk, and a through hole B is provided on the fixed block; the screw rod of the fixing screw passes through the through hole B and is threadedly connected with the through hole B; the screw rod of the fixing screw passes through the through hole B and then is inserted into the sleeve; the compression spring is located within the sleeve, one end of the compression spring is connected to the fixing screw, and the other end of the compression spring is connected to the bottom of the sleeve.

[0031] The sleeve of the spring ejector device contacts the shaft, and when the sleeve of the spring ejector device contacts the shaft, the compression spring is in a compressed state.

[0032] For an unpowered vehicle with a drag damping system as described above, the number of spring ejector devices is 2, and they respectively contact one rectangular surface of the shaft.

[0033] For an unpowered vehicle with a drag damping system as described above, the drag damping system further includes plate A, plate B, and an adjusting screw; the outer damping ring is an open circular structure; one end of the outer damping ring is connected to plate A, and the other end is connected to plate B; plate A and plate B are opposite to each other; a through hole C is provided on plate A, and a through hole D is provided on plate B; the adjusting screw sequentially passes through the through hole C and the through hole D and is connected with a nut to adjust the distance between plate A and plate B, thereby adjusting the friction force between the inner damping ring and the outer damping ring.

[0034] A non-powered vehicle including a drag damping system as described above, along the length direction of the shaft, the sum of the lengths of the inner wheel disc and the bump B ≤ the length of the inner damping ring;

[0035] The drag damping system further includes a retaining cover; the retaining cover is a circular plate, and a through hole E is provided on the retaining cover, and the diameter of the through hole E is smaller than the diameter of the inner wheel disc; the central axis of the through hole E coincides with the central axis of the retaining cover;

[0036] The retaining cover is fixedly connected to the inner damping ring; the shaft sequentially passes through the through hole A, the waist-shaped through hole and the through hole E, and the retaining cover is used to prevent the inner damping ring from flying out, so as to avoid the bump B not contacting the damping fixing plate.

[0037] A non-powered vehicle including a drag damping system as described above, the number of drag damping systems in the non-powered vehicle including the drag damping system is multiple; the difference between the multiple drag damping systems is only the position of the bump A on the plane where the damping fixing plate is located. Such a setting can achieve intermittent braking and present an effect similar to ABS anti-lock braking.

[0038] Beneficial effects:

[0039] (1) Through the cooperation of the inner and outer damping rings and the inner wheel disc, the present invention can hinder the movement of the non-powered vehicle, so that even when the tractor has sudden acceleration and deceleration, the non-powered vehicle can decelerate, thereby avoiding safety risks such as the non-powered vehicle losing control of its attitude and causing unhooking, squeezing, tail-swinging, overturning, etc., and at the same time avoiding the impact or collision of the non-powered vehicle with the tractor due to inertia, eliminating potential safety hazards.

[0040] (2) By applying pressure to the shaft through the spring ejector device to hinder the relative movement between the inner wheel disc and the shaft, when the tractor traveling at a constant speed has a small acceleration or deceleration, the drag damping system cannot work properly, thus not affecting normal driving.

[0041] (3) By designing multiple drag damping systems and adjusting the position of the bump A on the plane where the damping fixing plate is located in the multiple drag damping systems, intermittent braking is achieved, avoiding the problem that multiple non-powered vehicles cannot brake when being towed.

[0042] (4) The present invention can achieve the functions of braking and self-disconnection only by mechanical structures, achieving the remarkable effects of reducing impact and stabilizing the attitude of the towing vehicle, and can be applied to multiple fields. Description of the drawings

[0043] Figure 1 It is an exploded view of a drag damping system of the present invention;

[0044] Figure 2 It is a schematic diagram of a non-powered vehicle including a drag damping system of the present invention;

[0045] Figure 3 Schematic diagram of a drag damping system of the present invention;

[0046] Figure 4 Partial explosion view of the inner wheel disc and the spring ejector device of the present invention;

[0047] Figure 5 Schematic diagram of the inner wheel disc and the spring ejector device of the present invention;

[0048] Figure 6 Top view of the inner wheel disc and the spring ejector device of the present invention;

[0049] Figure 7 Schematic diagram of the inner wheel disc of the present invention;

[0050] Figure 8 Schematic diagram of an angle after the inner wheel disc of the present invention is connected to the fixed block;

[0051] Figure 9 Schematic diagram of another angle after the inner wheel disc of the present invention is connected to the fixed block;

[0052] Figure 10 Schematic diagram of the inside of the inner wheel disc and the inner damping ring of the present invention;

[0053] Figure 11 Schematic diagram of the gradual disengagement of the meshing state between the inner wheel disc and the inner damping ring of the present invention;

[0054] Figure 12 Schematic diagram of the complete disengagement between the inner wheel disc and the inner damping ring of the present invention;

[0055] Figure 13 Front view of the shaft of the present invention;

[0056] Figure 14 Side view of the shaft of the present invention;

[0057] Wherein, 1 - inner wheel disc, 2 - inner damping ring, 3 - outer damping ring, 4 - damping fixing plate, 5 - shaft, 6 - wheel, 7 - chassis, 10 - adjusting screw, 11 - fixing screw, 12 - kidney-shaped through hole, 13 - bump A, 14 - bump B, 15 - ratchet A, 16 - ratchet B, 17 - retaining cover, 18 - spring ejector device. Specific embodiments

[0058] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of this application.

[0059] A non-powered vehicle including a drag damping system, such as Figure 1 , Figure 2 shown, the non-powered vehicle including a drag damping system includes a chassis, wheels 6, an axle 5, and a plurality of drag damping systems;

[0060] The axle 5 passes through the chassis and is in clearance fit with the chassis; both ends of the axle 5 are fixedly connected to a wheel 6 respectively;

[0061] The drag damping system includes an inner wheel disc 1, an inner damping ring 2, an outer damping ring 3, a damping fixing plate 4, plate A, plate B, an adjusting screw 10, a spring ejector device 18, and a retaining cover 17;

[0062] As Figure 2 , Figure 10 shown, the damping fixing plate 4 is vertically placed and fixed on the chassis 7; the damping fixing plate 4 is provided with a through hole A, and the through hole A is circular; one surface of the damping fixing plate 4 is provided with a convex block A13;

[0063] The outer damping ring 3 is an open circular structure, and the outer damping ring 3 is fixed on the surface of the damping fixing plate 4 provided with the convex block A13; the central axis of the outer damping ring 3 is perpendicular to the damping fixing plate 4;

[0064] One end of the outer damping ring 3 is connected to plate A, and the other end is connected to plate B; plate A and plate B are opposite; plate A is provided with a through hole C, and plate B is provided with a through hole D;

[0065] The inner damping ring 2 is an annular structure; the inner damping ring 2 is located inside the outer damping ring 3 and the two are in transitional fit; a circle of ratchet teeth A15 is provided on the inner ring of the inner damping ring 2; the convex block A13 is located inside the inner damping ring 2;

[0066] As Figure 3 shown, the adjusting screw 10 sequentially passes through the through hole C and the through hole D and is connected in cooperation with a nut to adjust the distance between plate A and plate B, thereby adjusting the friction force between the inner damping ring 2 and the outer damping ring 3;

[0067] The inner wheel disc 1 is a disc-shaped structure; a circle of ratchet teeth B16 is provided on the circumferential surface of the inner wheel disc 1; the inner wheel disc 1 is provided with a waist-shaped through hole 12;

[0068] As Figure 1 , Figure 7 shown, one surface of the inner wheel disc 1 is provided with a convex block B14; the inner wheel disc 1 is arranged inside the inner damping ring 2, and the convex block B14 is in contact with the damping fixing plate 4; the central axis of the inner wheel disc 1 coincides with the central axis of the inner damping ring 2;

[0069] As Figures 13 - 14As shown, the cross-section of the shaft 5 is a kidney-shaped structure I; the cross-section of the kidney-shaped through hole 12 is a kidney-shaped structure II; the straight-edge length of the kidney-shaped structure II is greater than that of the kidney-shaped structure I; let the distance between the two straight edges of the kidney-shaped structure I be a, and the distance between the two straight edges of the kidney-shaped structure II be b, and the range of the difference between b and a is 0.10 - 0.20 mm;

[0070] As Figure 1 , Figures 4 - 6 shown, the spring ejector device 18 includes a fixing block, a fixing screw 11, a compression spring, and a sleeve;

[0071] As Figure 1 , Figures 7 - 9 shown, the fixing block is fixed on the surface of the inner wheel disc 1 without the convex block B14, and the fixing block is provided with a through hole B;

[0072] The screw rod of the fixing screw 11 passes through the through hole B and is threadedly connected with the through hole B; after the screw rod of the fixing screw 11 passes through the through hole B, it is inserted into the sleeve and connected to one end of the compression spring located in the sleeve, and the other end of the compression spring is connected to the bottom of the sleeve;

[0073] The retaining cover 17 is a circular plate, and the retaining cover 17 is provided with a through hole E, and the diameter of the through hole E is smaller than the diameter of the inner wheel disc 1; the central axis of the through hole E coincides with the central axis of the retaining cover 17;

[0074] The shaft 5 sequentially passes through the through hole A, the kidney-shaped through hole 12, and the through hole E, and the shaft 5 has a clearance fit with the through hole A, and one curved surface of the shaft 5 is attached to one curved inner side wall of the kidney-shaped through hole 12; the sleeve is in contact with one rectangular surface of the shaft 5, and when the sleeve is in contact with the shaft 5, the compression spring is in a compressed state; the number of the spring ejector devices 18 is 2, and they are respectively in contact with one rectangular surface of the shaft;

[0075] Along the length direction of the shaft 5, the sum of the lengths of the inner wheel disc 1 and the convex block B14 ≤ the length of the inner damping ring 2; the retaining cover 17 is fixedly connected to the inner damping ring 2 by threads;

[0076] As Figure 1 , Figure 3 , Figures 10 - 12 shown, the non-powered vehicle including the drag damping system is connected to the tractor. When the tractor accelerates or decelerates, the inner wheel disc 1 moves due to inertia and contacts the inner damping ring 2 through the engagement of the ratchet A 15 and the ratchet B16. Then, under the rotation of the shaft 5, the inner wheel disc 1 drives the inner damping ring 2 to rotate; during the process of the inner wheel disc 1 driving the inner damping ring 2 to rotate, the convex block A 13 contacts the convex block B14; when the convex block A 13 contacts the convex block B14, let the moving direction of the convex block B14 be a, and the supporting force direction applied by the convex block A13 to the convex block B14 through the contact surface be b. The included angle between a and b is less than 180 degrees, and the shaft 5 is within the included angle range of a and b;

[0077] The differences between multiple drag damping systems only lie in the different positions of the bump A 13 on the surface where the damping fixing plate 4 is located.

[0078] The usage process of the above device is as follows: Figure 11 , Figure 12 As shown in [Figure], the above-mentioned unpowered vehicle with a drag damping system is connected to a tractor for use. When the tractor accelerates or decelerates, the inner disk moves due to inertia and contacts the inner damping ring through the meshing of the ratchet A and the ratchet B. Then, under the rotation of the shaft, the inner disk drives the inner damping ring to rotate, causing the bump A to contact the bump B, thereby achieving the deceleration of the unpowered vehicle with a drag damping system.

[0079] In particular, when there are multiple drag damping systems in the unpowered vehicle with a drag damping system, since the positions of the bump A on the surface where the damping fixing plate is located are also different between different drag damping systems, intermittent braking can also be achieved when the tractor accelerates or decelerates.

Claims

1. A non-powered vehicle comprising a drag damping system, characterized in that, The non-powered vehicle with a drag damping system includes a drag damping system, a chassis, wheels (6) and an axle (5); the axle (5) passes through the chassis and is in clearance fit with the chassis; both ends of the axle (5) are fixedly connected to a wheel (6) respectively; The drag damping system includes an inner wheel disc (1), an inner damping ring (2), an outer damping ring (3) and a damping fixing plate (4); The damping fixing plate (4) is placed vertically and fixed on the chassis; the damping fixing plate (4) is provided with a through hole A, and the through hole A is circular; one side of the damping fixing plate (4) is provided with a convex block A; the outer damping ring (3) is of an annular structure, and the outer damping ring (3) is fixed on the surface of the damping fixing plate (4) provided with the convex block A; the central axis of the outer damping ring (3) is perpendicular to the damping fixing plate (4); The inner damping ring (2) is of an annular structure; the inner damping ring (2) is located inside the outer damping ring (3) and the two are in transitional fit; a circle of ratchet teeth A is provided on the inner ring of the inner damping ring (2); the convex block A is located inside the inner damping ring (2); The inner wheel disc (1) is of a disc-shaped structure; the inner wheel disc (1) is provided with a kidney-shaped through hole; a circle of ratchet teeth B is provided on the circumferential surface of the inner wheel disc (1); One side of the inner wheel disc (1) is provided with a convex block B; the inner wheel disc (1) is arranged inside the inner damping ring (2), and the convex block B is in contact with the damping fixing plate (4); the central axis of the inner wheel disc (1) coincides with the central axis of the inner damping ring (2); The cross-section of the axle (5) is of a kidney-shaped structure I; the cross-section of the kidney-shaped through hole is of a kidney-shaped structure II; the axle (5) passes through the through hole A and the kidney-shaped through hole in sequence, and the axle (5) is in clearance fit with the through hole A, and one curved surface of the axle (5) is attached to one curved inner side wall of the kidney-shaped through hole; The non-powered vehicle with the drag damping system is connected to a tractor. When the tractor accelerates or decelerates, the inner wheel disc (1) is displaced due to inertia and contacts the inner damping ring (2) through the engagement of the ratchet teeth A and the ratchet teeth B. Then, under the rotation of the axle (5), the inner wheel disc (1) drives the inner damping ring (2) to rotate; during the process of the inner wheel disc (1) driving the inner damping ring (2) to rotate, the convex block A contacts the convex block B; when the convex block A contacts the convex block B, the movement direction of the convex block B is recorded as a, and the direction of the supporting force applied by the convex block A to the convex block B through the contact surface is b. The included angle between a and b is less than 180 degrees, and the axle (5) is within the included angle range of a and b.

2. The non-powered vehicle comprising a drag damping system according to claim 1, wherein, A spring ejector device (18) is provided on the side of the inner wheel disc (1) without the convex block B. The spring ejector device (18) is always in contact with the axle (5), and the spring ejector device (18) is used to apply pressure to the axle (5) to hinder the relative movement between the inner wheel disc (1) and the axle (5).

3. The non-powered vehicle comprising a drag damping system according to claim 2, wherein The spring ejector device (18) includes a fixing block, a fixing screw (11), a pressure spring and a sleeve; The fixing block is fixed on the inner wheel disc (1), and the fixing block is provided with a through hole B; the screw of the fixing screw (11) passes through the through hole B and is in threaded fit with the through hole B; the screw of the fixing screw (11) is inserted into the sleeve after passing through the through hole B; the pressure spring is located inside the sleeve, one end of the pressure spring is connected to the fixing screw (11), and the other end of the pressure spring is connected to the bottom of the sleeve; The sleeve of the spring ejector device (18) contacts the shaft (5), and when the sleeve of the spring ejector device (18) contacts the shaft (5), the compression spring is in a compressed state.

4. The non-powered vehicle comprising a drag damping system according to claim 3, wherein, The number of spring ejector devices is 2, and each contacts a rectangular surface of the shaft.

5. A non-powered vehicle comprising a drag damping system according to claim 1, characterized in that, The drag damping system further includes plate A, plate B, and adjusting screw (10); the outer damping ring (3) is an open circular structure; one end of the outer damping ring (3) is connected to plate A, and the other end is connected to plate B; plate A and plate B face each other; through hole C is provided on plate A, and through hole D is provided on plate B; the adjusting screw (10) sequentially passes through through hole C and through hole D and is connected in cooperation with a nut to adjust the distance between plate A and plate B, thereby adjusting the friction force between the inner damping ring (2) and the outer damping ring (3).

6. The non-powered vehicle comprising a drag damping system according to claim 1, characterized in that, Along the length direction of the shaft (5), the sum of the lengths of the inner disk (1) and the convex block B ≤ the length of the inner damping ring (2); The drag damping system further includes a retaining cover; the retaining cover is a circular plate, and through hole E is provided on the retaining cover, and the diameter of through hole E is smaller than the diameter of the inner disk (1); the central axis of through hole E coincides with the central axis of the retaining cover; The retaining cover is fixedly connected to the inner damping ring (2); the shaft (5) sequentially passes through through hole A, the kidney-shaped through hole, and through hole E.

7. A non-powered vehicle comprising a drag damping system according to claim 1, wherein, In the non-powered vehicle including the drag damping system, the number of drag damping systems is multiple; the difference between the multiple drag damping systems is only the position of the convex block A on the surface where the damping fixing plate (4) is located.

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