Wheel binding device of passenger car

Abstract

The utility model provides a wheel binding device of a passenger car, and belongs to the technical field of logistics equipment. The binding device solves the problem that an existing binding device is inconvenient to bind. The wheel binding device of the passenger car comprises a base and a binding belt, one end of the binding belt is a furling end, the furling end is connected to the base, a swing arm capable of swinging from the furling end of the binding belt to the direction away from the furling end is further hinged to the side portion of the base, and the free end of the swing arm is fixedly connected with a guide arm stretching out from the side portion of the base to the position above the base. The other end of the binding belt is connected to the guide arm, and when the swing arm swings in the direction away from the winding end of the binding belt, the guide arm is downwards close to the base from the upper portion of the base. According to the wheel binding device of the passenger car, binding operation can be more convenient and faster.

Description

Technical Field

[0001] The utility model belongs to the technical field of logistics equipment and relates to a wheel binding device for a passenger car. Background Art

[0002] After leaving the factory, passenger cars need to be transported to sales points by transport vehicles. When the passenger cars are parked on the transport vehicles for transportation, wheel tying devices are needed to fix the wheels of the passenger cars to ensure the stability of the passenger cars during transportation. Or when the passenger car breaks down and needs to be towed, tying devices are also needed to fix it on the transport vehicle. As disclosed in the patent document (application number: 201720397635.9), a tire bracket rail vehicle is provided with a tire binding device, including a tire strap, a ratchet and a pawl. The ratchet is rotatably connected in the bracket shell, and the ratchet is provided with a hexagonal shaft for manual operation. The pawl is hinged in the bracket shell, and the pawl can engage with the ratchet. One end of the tire strap is wound around the ratchet, and the other end is connected to the pawl through a pull ring. When in use, the automobile tire is placed in the tire strap, and the hexagonal shaft of the ratchet is rotated counterclockwise using an inner hexagon socket to drive the tire strap to be wound around the ratchet. The tire strap pull ring pulls the ratchet pawl to rotate counterclockwise around the ratchet fixed shaft, so that the ratchet pawl clamps the ratchet and cannot rotate clockwise, thereby completing the binding of the wheel.

[0003] However, the actual use is not as shown in the patent specification. Figure 1 The tire shown is not a tire, but a vehicle. The gap between the tire tread and the vehicle body is small. When bundling, it is necessary to hold the tire strap and extend it into the gap between the tire tread and the vehicle body, and at the same time adjust the position of the tire strap and the wheel without being easily seen. In particular, the bundling device is installed at the edge of the loading plate of the transport vehicle. It is difficult for people to stand on the loading plate of the transport vehicle, and the gap between the tire tread and the vehicle body of the passenger car on the transport vehicle is relatively high, which is not easy to operate. The above factors make the bundling operation of the bundling device inconvenient and inefficient. Summary of the invention

[0004] The utility model aims to solve the above problems in the prior art and proposes a wheel binding device for a passenger car, which can make the binding operation more convenient and quick.

[0005] The purpose of the utility model can be achieved through the following technical solutions: a wheel binding device for a passenger car, comprising a base and a binding belt, one end of the binding belt is a reeling end, and the reeling end is connected to the base, and it is characterized in that the side of the base is also hinged with a swing arm that can swing from the reeling end of the binding belt toward a direction away from the reeling end, the free end of the swing arm is fixedly connected to a guide arm extending from the side of the base toward the top of the base, the other end of the binding belt is connected to the guide arm, and when the swing arm swings toward the reeling end away from the binding belt, the guide arm moves downward from the top of the base to the base.

[0006] The base can be a part of the body of the transport vehicle, or it can be independent and installed on the transport vehicle. Usually, two bases are required to be used in pairs, that is, the two bases are installed on both sides of the width direction of the transport vehicle, so that the two swing arms are arranged oppositely. Before use, the swing arm faces forward so that the guide arm is close to the retracted end of the binding belt, which is convenient for loading the passenger car. When in use, the passenger car drives onto the transport vehicle and presses the wheel on the base. At this time, the hinge point of the swing arm is located on the side of the wheel, and the guide arm is located at the front and lower side of the wheel. When bundling, the swing arm swings away from the retracted end of the binding belt, that is, the swing arm swings backward, and the guide arm extends above the base, so the guide arm moves upward and enters the gap between the wheel tread and the vehicle body. As the swing arm swings, the guide arm moves along the wheel tread with the binding belt. When the swing arm passes the high point and swings downward, the guide arm approaches the base, so that the guide arm moves from the front and lower part of the wheel with the binding belt to the rear and lower part. The predetermined arc trajectory of the guide arm allows the binding belt to be accurately set on the wheel tread, thereby improving the stability and reliability of wheel fixing. At the same time, since the binding belt is pulled by the guide arm driven by the swing arm, the staff does not need to put their hands into the gap outside the wheel tread to perform the binding operation, and there is no need to manually adjust the position of the binding belt after the guide arm is pulled, so the operation is more convenient, quick and efficient.

[0007] In the above-mentioned wheel binding device for a passenger car, the base includes a bottom plate and a bracket that are fixedly connected to each other, the bracket is located at the side of the bottom plate and is higher than the bottom plate, the swing arm is hinged on the bracket, and the guide arm extends toward the side where the bottom plate is located. The guide arm needs to be moved from the front lower side of the wheel to the top of the wheel, so the swing arm is hinged on the bracket, raising the hinge point of the swing arm, thereby shortening the length of the swing arm. The guide arm extends toward the side where the bottom plate is located, that is, the guide arm is perpendicular to the swing arm, so that the guide arm can extend from the side into the gap between the wheel tread and the vehicle body.

[0008] In the above-mentioned wheel binding device for a passenger car, the bottom plate is recessed downward to form an arc-shaped limiting groove, the retracted end of the binding belt is located on one side of the limiting groove in the front-rear direction, and when the swing arm swings away from the retracted end of the binding belt, the guide arm can move from the upper side of the limiting groove to the other side of the limiting groove in the front-rear direction. The wheel is pressed into the limiting groove, making the fixed position of the passenger car more accurate, and the limiting groove also limits the wheel. In conjunction with the binding belt, the binding belt and the wall of the limiting groove form an annular closed fixing structure, making the vehicle fixation more stable and reliable.

[0009] In the above-mentioned wheel binding device for passenger cars, the swing arm includes a swing rod and a telescopic rod, one end of the swing rod is hinged on a bracket, the telescopic rod is slidably connected to the swing rod along the length direction, the guide arm is fixed to the outer end of the telescopic rod, and an elastic member is connected between the swing rod and the telescopic rod so that the telescopic rod always has a tendency to shrink. The outer diameters of tires of different models are different. In order to adapt to tires of different diameters, the swing arm is configured as a rod and a telescopic rod so that the telescopic rod can be extended and retracted, and the elastic member makes the telescopic rod always have a tendency to shrink, so that the guide arm is based on the tire tread, and the guide arm can always press against the tire tread after extending into the gap between the tire tread and the vehicle body. When the swing arm swings, the guide arm slides along the tire tread, and the binding belt is also pulled against the tire tread, which can improve the position accuracy of the binding belt and the versatility of the binding device.

[0010] In the above-mentioned wheel binding device for passenger cars, the swing rod is tubular, the telescopic rod is slidably inserted in the swing rod, a connecting pin is fixed on the telescopic rod, an adjusting bolt is screwed in the swing rod along the length direction, and the elastic member includes a tension spring, one end of the tension spring is fixed on the connecting pin, and the other end is fixed on the adjusting bolt. The sleeve structure of the swing rod and the telescopic rod is more compact and stable, and the tension spring is located inside the swing rod to improve reliability. Due to different outer diameters of wheels, the extension length of the telescopic rod is different. When the extension is shorter, the tension of the tension spring is smaller, and when the extension is longer, the tension of the tension spring is larger. Therefore, the tension spring is connected to the adjusting bolt, so that the elastic tension of the tension spring can be adjusted, and then the pressing force of the guide arm pressed on the tire tread can be adjusted. The friction resistance when the guide arm moves can also be adjusted, so that the guide arm pulls the binding belt more smoothly.

[0011] In the above-mentioned wheel binding device for passenger cars, the base is also provided with a guide part, and when the swing arm swings in the direction away from the retracting end of the binding belt and the guide arm approaches the base, the guide part can guide the telescopic rod to extend axially. The setting of the elastic member makes the telescopic rod always have a tendency to shrink, so when the guide arm approaches the base, it will enter the angle between the tire tread and the base, that is, the guide arm will move a certain distance in the direction of the retracting end of the binding belt, resulting in a smaller spacing between the guide arm and the retracting end, that is, the two connection points of the binding belt are close, which will lead to a decrease in the stability of wheel binding. For this reason, a guide part is provided on the base, and when the swing arm swings in the direction away from the retracting end and the guide arm approaches the base, the guide part can guide the swing arm to extend axially, so that the guide arm is separated from the wheel surface and continues to move in the direction away from the retracting end, increasing the distance between the guide arm and the retracting end, that is, increasing the distance between the two connection points of the binding belt, and improving the binding stability.

[0012] In the above-mentioned wheel binding device for a passenger car, the bracket includes a vertically arranged mounting plate, the upper edge of the mounting plate at one end away from the retracting end is a guide edge, the guide edge gradually tilts downward or curves in an arc shape in the direction away from the retracting end, the above-mentioned guide portion is the guide edge, one end of the guide arm extends out of the side of the telescopic rod, and when the swing rod swings in the direction away from the retracting end, the end of the guide arm can abut against the guide edge and slide along the guide edge. The guide portion is a part of the mounting plate, which simplifies the structure, and the guide edge tilts downward or curves in an arc shape in the direction away from the retracting end, so that when the swing rod swings, the outer peripheral surface of the end of the guide arm abuts against and slides along the guide edge, and the telescopic rod can be further extended to increase the distance between the guide arm and the retracting end, thereby improving the binding stability.

[0013] In the above-mentioned wheel binding device for a passenger car, the mounting plate is in an arc-shaped strip shape, with both ends of the mounting plate facing downward, and at least one end is fixedly connected to the bottom plate, the middle part of the mounting plate is arched upward, the swing rod is hinged to the middle part of the mounting plate through a rotating shaft, and the mounting plate is also provided with a driving member capable of driving the swing rod to swing back and forth. The swing rod realizes automatic swinging through the driving member, without manual operation, which is more convenient and efficient.

[0014] In the above-mentioned wheel tying device for a passenger car, the driving member includes a hydraulic motor, the middle part of the mounting plate has a plate-shaped mounting portion protruding downward, the hydraulic motor is fixed on the mounting portion, and the output shaft of the hydraulic motor is connected to the rotating shaft of the swing arm through a gear or a pulley transmission. The hydraulic motor can realize the reciprocating swing of the swing arm through gear transmission or pulley transmission, which is stable and reliable. In actual application, the driving member can also be a motor.

[0015] In the above-mentioned wheel tying device for a passenger car, a clearance gap is also provided on the bottom plate, and when the swing arm swings away from the retracted end, the guide arm can enter the clearance gap under the guidance of the guide part, and a locking member capable of fixing the guide arm in the clearance gap is also provided on the bottom plate. The locking member is located below the bottom plate to avoid interference with the wheel. For this purpose, a clearance gap is provided on the bottom plate so that the guide arm can enter the clearance gap, and the locking member can lock and fix the guide arm, thereby making the connection of the binding belt stable, and improving the stability and reliability of the binding.

[0016] Compared with the prior art, the wheel binding device of the passenger car has the following advantages:

[0017] 1. Since the binding belt is pulled by the guide arm driven by the swing arm, the staff does not need to put their hands into the gap outside the tire tread to perform the binding operation, and there is no need to manually adjust the position of the binding belt after the guide arm is pulled, so the operation is more convenient, faster and more efficient.

[0018] 2. Since the swing arm is configured as a lever and a telescopic rod, the telescopic rod can be extended and retracted, and the elastic member makes the telescopic rod always have a tendency to shrink, so that the guide arm is based on the tire tread. After the guide arm is extended into the gap between the tire tread and the vehicle body, it can always press against the tire tread. When the swing arm swings, the guide arm slides along the tire tread, and the binding belt is also pulled along the tire tread, which can not only improve the position accuracy of the binding belt, but also improve the versatility of the binding device, and can be suitable for tires of different diameters.

[0019] 3. Since the guide part is arranged on the base, when the swing arm swings away from the retracting end and the guide arm approaches the base, the guide part can guide the telescopic rod to extend axially, so that the guide arm is separated from the wheel surface and continues to move away from the retracting end, thereby increasing the distance between the guide arm and the retracting end, that is, increasing the distance between the two connection points of the binding belt, thereby improving the binding stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the wheel binding device.

[0021] Figure 2 This is a diagram showing the wheel holder in use when it is used to tie up a wheel.

[0022] Figure 3 yes Figure 2 A magnified view of the structure at center.

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the wheel binding device when the binding belt is pulled out.

[0024] Figure 5 It is a front view of the structure of the wheel tying device.

[0025] Figure 6 yes Figure 5 Structural cross-section view at BB in the middle.

[0026] Figure 7 yes Figure 4 Enlarged view of the structure at C in the middle.

[0027] Figure 8 yes Figure 6 Enlarged view of the structure at D in the middle.

[0028] Fig. 9 yes Figure 6 Enlarged view of the structure at E in the middle.

[0029] Fig.10 yes Figure 5 Structural cross-section view at FF in the middle.

[0030] Fig.11 yes Fig.10 Enlarged view of the structure at G in the middle.

[0031] Fig.12 yes Figure 6 Enlarged view of the structure at H in the middle.

[0032] In the figure, 1, base; 11, bottom plate; 111, limit groove; 112, clearance gap; 113, through hole; 12, bracket; 121, mounting plate; 122, guide edge; 123, mounting part; 124, mounting gap; 13, guide part; 14, side beam; 15, limit rod; 2, binding belt; 21, retracting end; 3, swing arm; 31, swing rod; 311, fixing part; 312, adjusting bolt; 313, guide rib; 32, telescopic rod; 321, connecting rod Connecting pin; 322, guide groove; 33, tension spring; 34, rotating shaft; 4, guide arm; 41, roller sleeve; 5, driving member; 51, hydraulic motor; 52, driving pulley; 53, driven pulley; 54, belt; 6, locking member; 61, locking cylinder; 62, moving clamp; 621, clamping mouth; 63, fixed clamp; 631, limiting notch; 7, retractor; 71, retracting motor; 72, retracting shaft; 73, ratchet; 74, pawl; 75, spring; 76, hydraulic cylinder. DETAILED DESCRIPTION

[0033] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0034] like Figure 1 , Figure 2 , Figure 3 As shown, a wheel binding device for a passenger car includes a base 1 and a binding belt 2. The base 1 includes a bottom plate 11 and a bracket 12. Side beams 14 are fixed at both lateral edges of the bottom plate 11, that is, the two side beams 14 are parallel and arranged along the front and back. The middle part of the bottom plate 11 is recessed downward to form an arc-shaped limiting groove 111, that is, the front and rear groove walls of the limiting groove 111 are raised upward, and a laterally arranged limiting rod 15 is fixed on the upper side of the bottom plate 11. The limiting rod 15 is located at the front side of the limiting groove 111 and is used to limit the wheel. The bracket 12 includes a mounting plate 121. There are two mounting plates 121, and the two mounting plates 121 are in the shape of arc strips. The two ends of the mounting plates 121 face downward, and the front ends are fixedly connected to the side beams 14, that is, the two mounting plates 121 are fixed to the bottom plate 11 through the side beams 14. The middle of the mounting plates 121 is arched upward and higher than the bottom plate 11. The two mounting plates 121 are arranged side by side in the horizontal direction, and there is a mounting gap 124 between the two mounting plates 121. One end of the binding belt 2 is a retracting end 21. A retractor 7 is installed below the bottom plate 11. The retractor 7 is located in front of and below the limiting groove 111. A through hole 113 is provided on the bottom plate 11. The retracting end 21 of the binding belt 2 passes through the through hole 113 and is connected to the retractor 7. The retractor 7 can release and retract the binding belt 2.

[0035] Combination Figures 4 to 8 As shown, a swing arm 3 is hinged in the installation gap 124 between the two installation plates 121, and the swing arm 3 can swing from the reeling end 21 of the binding belt 2 to the direction away from the reeling end 21. Specifically, the swing arm 3 includes a swing rod 31 and a telescopic rod 32. One end of the swing rod 31 is hinged at the middle part between the two installation plates 121 through a rotating shaft 34. The swing rod 31 is tubular, and the telescopic rod 32 is slidably inserted into the swing rod 31 along the length direction. Guide grooves 322 are opened on both side edges of the telescopic rod 32 along the length direction. A guide rib 313 is provided on the inner wall of the swing rod 31 along the length direction, and the guide rib 313 is slidably embedded in the guide groove 322. A connecting pin 321 is fixed on the telescopic rod 32, a fixing portion 311 is fixed inside the swing rod 31, a screw hole is opened on the fixing portion 311 along the length direction of the swing rod 31, an adjusting bolt 312 is screwed into the screw hole, the elastic member includes a tension spring 33, and one end of the tension spring 33 is fixed on the connecting pin 321, and the other end is fixed on the adjusting bolt 312. Under the action of the tension spring 33, the telescopic rod 32 always has a tendency to contract. A guide arm 4 is also vertically fixed to the outer end of the telescopic rod 32. The guide arm 4 is rod-shaped and extends horizontally toward the side where the bottom plate 11 is located. That is, when the swing arm 3 swings upward, the guide arm 4 is located above the base 1 and higher than the retracted end 21 of the binding belt 2. A roller sleeve 41 is rotatably sleeved on the guide arm 4. The other end of the binding belt 2 is connected to the guide arm 4. When the swing arm 3 swings away from the retracted end 21 of the binding belt 2, the guide arm 4 can move backward from the upper limit groove 111 to the rear side of the limit groove 111. When the swing arm 3 swings downward, the guide arm 4 is close to the base 1. Fig. 9 As shown, a driving member 5 capable of driving the swing arm 31 to swing back and forth is also provided on the mounting plate 121, and the driving member 5 includes a hydraulic motor 51. The middle part of the mounting plate 121 has a plate-shaped mounting portion 123 protruding downward. The hydraulic motor 51 is fixed on the mounting portion 123. A driving pulley 52 is fixed on the output shaft of the hydraulic motor 51, and a driven pulley 53 is fixed on the rotating shaft 34 of the swing arm 31. The driving pulley 52 and the driven pulley 53 are connected by a belt 54. The hydraulic motor 51 drives the swing arm 3 to swing backward. The elastic member makes the telescopic rod 32 always have a tendency to shrink, so that the guide arm 4 is based on the tire tread. After the guide arm 4 extends into the gap between the tire tread and the vehicle body, it can always press against the tire tread. When the swing arm 3 swings, the guide arm 4 slides along the tire tread. The base 1 also has a guide portion 13 that can guide the telescopic rod 32 to extend axially when the swing arm 31 swings away from the retracted end 21 of the binding belt 2 and the guide arm 4 approaches the base 1.

[0036] Combination Fig.10 , Fig.11As shown, the upper edge of the end of the mounting plate 121 away from the retracting end 21 is a guide edge 122, and the guide edge 122 is gradually bent downward in an arc shape in the direction away from the retracting end 21. The guide portion 13 is the guide edge 122. The end of the guide arm 4 fixed to the end of the telescopic rod 32 extends out of the side of the telescopic rod 32. When the swing arm 31 swings away from the retracting end 21, the end of the guide arm 4 can abut against the guide edge 122 and slide along the guide edge 122. A clearance notch 112 is also provided on the bottom plate 11. The clearance notch 112 is located at the rear side of the limiting groove 111. When the swing arm 3 swings away from the retracting end 21, the guide arm 4 can enter the clearance notch 112 under the guidance of the guide portion 13. A locking member 6 is also provided on the bottom plate 11 to fix the guide arm 4 in the clearance notch 112. The locking member 6 includes a locking cylinder 61, the piston rod of which faces forward horizontally and is fixed with a movable clamp block 62. A clamping opening 621 facing forward is provided on the front end surface of the movable clamp block 62. A fixed clamp block 63 is also fixed on the lower side surface of the bottom plate 11. A limiting notch 631 opposite to the clamping opening 621 is provided on the fixed clamp block 63. When the guide arm 4 enters the clearance notch 112 under the guidance of the guide part 13, it can abut against the limiting notch 631. The locking cylinder 61 drives the movable clamp block 62 to move forward, so that the clamping opening 621 is buckled on the guide arm 4. Fig.12 As shown, the reel 7 is located at the front and lower part of the limit slot 111, and the reel 7 includes a reel motor 71 and a reel shaft 72. The reel shaft 72 is connected to the output shaft of the reel motor 71, and the reel end 21 of the binding belt 2 is wound on the reel shaft 72. A ratchet 73 is also fixed to the end of the reel shaft 72, and a pawl 74 is also hinged under the bottom plate 11. A spring 75 is provided between the pawl 74 and the bottom plate 11. Under the action of the spring 75, the pawl 74 engages with the ratchet 73, and the pawl 74 can inhibit the ratchet 73 from rotating in the direction of releasing the binding belt 2, that is, preventing the reel shaft 72 from releasing the binding belt 2, but the pawl 74 does not limit the ratchet 73 from rotating in the direction of winding, that is, the reel motor 71 can rotate normally when winding. A hydraulic cylinder 76 is also fixed under the base plate 11, and the piston rod of the hydraulic cylinder 76 is connected to the pawl 74. When the belt needs to be released, the hydraulic cylinder 76 drives the pawl 74 to disengage the ratchet 73. When the locking piece 6 in the guide arm 4 is fixed, the winding motor 71 can drive the winding shaft 72 to rotate to wind the belt, so that the binding belt 2 is tightly tied to the wheel.

[0037] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0038] Although the terms such as base 1, bottom plate 11, and limit groove 111 are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A wheel binding device for a passenger vehicle, comprising a base (1) and a binding belt (2), wherein one end of the binding belt (2) is a retractable end (21), and the retractable end (21) is connected to the base (1), characterized in that: The base (1) is also hingedly provided with a swing arm (3) capable of swinging from the retracted end (21) of the binding belt (2) in a direction away from the retracted end (21); the free end of the swing arm (3) is fixedly connected with a guide arm (4) extending from the side of the base (1) toward the top of the base (1); the other end of the binding belt (2) is connected to the guide arm (4); when the swing arm (3) swings in a direction away from the retracted end (21) of the binding belt (2), the guide arm (4) moves downward from the top of the base (1) toward the base (1).

2. The wheel binding device for a passenger vehicle according to claim 1, characterized in that: The base (1) comprises a bottom plate (11) and a bracket (12) which are fixedly connected to each other; the bracket (12) is located at the side of the bottom plate (11) and is higher than the bottom plate (11); the swing arm (3) is hinged on the bracket (12); and the guide arm (4) extends toward the side where the bottom plate (11) is located.

3. The wheel binding device for a passenger vehicle according to claim 2, characterized in that: The bottom plate (11) is recessed downward to form an arc-shaped limiting groove (111); the retracted end (21) of the binding belt (2) is located on one side of the limiting groove (111) in the front-rear direction; when the swing arm (3) swings in a direction away from the retracted end (21) of the binding belt (2), the guide arm (4) can move from above the limiting groove (111) to the other side of the limiting groove (111) in the front-rear direction.

4. The wheel binding device for a passenger vehicle according to claim 2 or 3, characterized in that: The swing arm (3) comprises a swing rod (31) and a telescopic rod (32); one end of the swing rod (31) is hinged on the bracket (12); the telescopic rod (32) is slidably connected to the swing rod (31) along the length direction; the guide arm (4) is fixed to the outer end of the telescopic rod (32); an elastic member is connected between the swing rod (31) and the telescopic rod (32) so that the telescopic rod (32) always has a contraction tendency.

5. The wheel binding device for a passenger vehicle according to claim 4, characterized in that: The swing rod (31) is tubular, the telescopic rod (32) is slidably inserted in the swing rod (31), a connecting pin (321) is fixed on the telescopic rod (32), an adjusting bolt (312) is screwed in the swing rod (31) along the length direction, and the elastic member includes a tension spring (33), one end of the tension spring (33) is fixed on the connecting pin (321), and the other end is fixed on the adjusting bolt (312).

6. The wheel binding device for a passenger vehicle according to claim 4, characterized in that: The base (1) also has a guide portion (13), and when the swing rod (31) swings in a direction away from the retracted end (21) of the binding belt (2) and the guide arm (4) approaches the base (1), the guide portion (13) can guide the telescopic rod (32) to extend axially.

7. The wheel binding device for a passenger vehicle according to claim 6, characterized in that: The bracket (12) comprises a vertically arranged mounting plate (121), the upper edge of one end of the mounting plate (121) away from the retracting end (21) being a guide edge (122), the guide edge (122) gradually tilting downward or arc-shaped in a direction away from the retracting end (21), the guide portion (13) being the guide edge (122), one end of the guide arm (4) extending out of the side of the telescopic rod (32), and when the swing rod (31) swings in a direction away from the retracting end (21), the end of the guide arm (4) can abut against the guide edge (122) and slide along the guide edge (122).

8. The wheel binding device for a passenger vehicle according to claim 7, characterized in that: The mounting plate (121) is in the shape of an arc strip, with both ends of the mounting plate (121) facing downwards and at least one end being fixedly connected to the bottom plate (11). The middle portion of the mounting plate (121) is arched upwards. The swing rod (31) is hinged to the middle portion of the mounting plate (121) via a rotating shaft (34). The mounting plate (121) is also provided with a driving member (5) capable of driving the swing rod (31) to swing back and forth.

9. The wheel binding device for a passenger vehicle according to claim 8, characterized in that: The driving member (5) comprises a hydraulic motor (51), the middle part of the mounting plate (121) has a plate-shaped mounting portion (123) protruding downward, the hydraulic motor (51) is fixed on the mounting portion (123), and the output shaft of the hydraulic motor (51) is connected to the rotating shaft (34) of the swing arm (31) through a gear or a pulley transmission.

10. The wheel binding device for a passenger vehicle according to claim 6, characterized in that: The bottom plate (11) is also provided with a clearance notch (112). When the swing arm (3) swings in a direction away from the retracted end (21), the guide arm (4) can enter the clearance notch (112) under the guidance of the guide portion (13). The bottom plate (11) is also provided with a locking member (6) capable of fixing the guide arm (4) in the clearance notch (112).

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