Car arrester

Abstract

The utility model discloses a car arrester, relates to car arresting equipment technical field, car arrester includes base, car arresting piece, first elastic piece and telescopic piece, the base is provided with rotating shaft, car arresting piece is sleeved on the rotating shaft and can slide along the axial direction of rotating shaft, first elastic piece is arranged between the car arresting piece and base, the both ends of telescopic piece are respectively rotatingly connected to car arresting piece and base, and the telescopic piece is connected with the car arresting piece. When the telescopic part stretches out and draws back, the car stopping part can be driven to rotate to a first state and a second state, the car stopping part is used for abutting against the wheels when in the first state, the first elastic part can apply elastic force which is in the axial direction of the rotating shaft and faces the wheels to the car stopping part, and the car stopping part is separated from the wheels when in the second state. According to the car arrester, rigid impact force between the car arresting piece and the base can be reduced, and damage caused by the fact that the impact force between the car arresting piece and the base is too large is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle arresting equipment, in particular to a vehicle arrester. Background Art

[0002] After a tram is parked, a car blocker is installed near the track to prevent the train carriages from slipping due to inertia and track inclination. In related technologies, the car blocker includes a base, a car blocker, and a telescopic member. The car blocker is rotatably connected to the base, and the telescopic member is arranged between the car blocker and the base. When the car needs to be prevented from slipping after parking, the telescopic member controls the rotation of the car blocker by telescoping so that the car blocker abuts the front side of the wheel. During use, it was found that although a buffer structure can be provided on the car blocker to play a certain buffering role, a large impact force will still be generated between the car blocker and the base, which can easily damage the car blocker. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention provides a car stopper that can reduce the rigid impact force between the car stopper and the base, thereby preventing the car stopper and the base from being damaged due to excessive impact force.

[0004] According to an embodiment of the utility model, the car stopper includes a base, a car stopper, a first elastic member and a telescopic member, the base is provided with a rotating shaft, the car stopper is sleeved on the rotating shaft and can slide along the axial direction of the rotating shaft, the first elastic member is provided between the car stopper and the base, and the two ends of the telescopic member are respectively rotatably connected to the car stopper and the base, wherein, when the telescopic member is extended and retracted, it can drive the car stopper to rotate to a first state and a second state, and the car stopper is used to abut the wheel when it is in the first state, and the first elastic member can apply an elastic force to the car stopper along the axial direction of the rotating shaft and toward the wheel, and the car stopper is separated from the wheel when it is in the second state.

[0005] The car stopper according to the embodiment of the utility model has at least the following beneficial effects:

[0006] The base can be installed near the track. When the vehicle needs to be prevented from slipping after parking, the telescopic member is activated. The telescopic member can drive the vehicle stopper to rotate to the first state by extension. In this state, the vehicle stopper can abut the front side of the wheel to prevent the vehicle from slipping. When the train needs to move, the telescopic member drives the vehicle stopper to rotate to the second state. In this state, the vehicle stopper is separated from the wheel and is located outside the axial direction of the wheel. According to the vehicle stopper of the embodiment of the utility model, since the vehicle stopper can slide along the axial direction of the rotating shaft, and a first elastic member is provided between the vehicle stopper and the base, when the vehicle stopper abuts the front side of the wheel and the wheel applies an impact force to the vehicle stopper, the first elastic member can elastically deform and apply an elastic force to the vehicle stopper. The elastic force is along the axial direction of the rotating shaft and toward the wheel, thereby having a buffering effect, reducing the impact force between the vehicle stopper and the base, and avoiding damage caused by excessive impact force between the vehicle stopper and the base.

[0007] According to some embodiments of the present invention, the first elastic member is configured as a coil spring, the first elastic member is sleeved on the rotating shaft, and two ends of the first elastic member are respectively in contact with the vehicle blocking member and the base.

[0008] According to some embodiments of the present invention, the vehicle blocking member and the rotating shaft are relatively fixed along the circumference of the rotating shaft, and torsion springs are respectively sleeved on both ends of the rotating shaft, and both ends of the torsion spring are respectively connected to the base and the rotating shaft.

[0009] According to some embodiments of the present invention, a limit strip is provided on the outer side wall of the rotating shaft, and the limit strip extends along the axial direction of the rotating shaft. The vehicle blocking component is provided with a sleeve hole and is sleeved on the rotating shaft through the sleeve hole. The hole wall of the sleeve hole is provided with a limit groove, and the limit groove passes through the axial direction of the sleeve hole. The limit strip is clamped in the limit groove.

[0010] According to some embodiments of the present invention, the limiting bars are provided in plurality and are arranged along the circumference of the rotating shaft, and the limiting grooves are provided in plurality and are arranged along the circumference of the sleeve hole.

[0011] According to some embodiments of the present invention, the vehicle blocking member includes a swinging part, a contact part and a second elastic member, the swinging part is sleeved on the rotating shaft and can slide along the axial direction of the rotating shaft, the first elastic member is arranged between the swinging part and the base, the contact part is slidably installed on the swinging part, the sliding direction of the contact part is parallel to the axial direction of the rotating shaft, and the second elastic member is arranged between the swinging part and the contact part; wherein, when the vehicle blocking member is in the first state, the contact part is used to abut the wheel, and the second elastic member can apply an elastic force to the abutting part along the sliding direction of the abutting part and toward the wheel.

[0012] According to some embodiments of the present invention, the length direction of the abutting portion is parallel to the axial direction of the rotating shaft, an abutting head is provided at one end of the abutting portion, and the abutting head is used to abut the wheel, the swinging portion is provided with a mounting cavity, and the second elastic member is configured as a coil spring, which is installed in the mounting cavity and sleeved on the abutting portion, and the abutting portion is provided with a push block, which abuts against one end of the second elastic member close to the abutting head.

[0013] According to some embodiments of the present invention, a surface of the abutting head on a side facing away from the abutting portion is configured as a spherical surface convex outward.

[0014] According to some embodiments of the present invention, an opening is provided on a side of the installation cavity close to the abutment joint, a detachable sealing portion is provided in the opening, a side of the installation cavity away from the abutment joint and the sealing portion are both provided with a clearance hole, the abutment portion is passed through the two clearance holes, and a locking nut is threadedly connected to one end of the abutment portion away from the abutment joint.

[0015] According to some embodiments of the present invention, the vehicle blocking member is provided with a sliding rod, the sliding rod extends along the axial direction of the rotating shaft, and the end of the telescopic member away from the base is slidably sleeved on the sliding rod.

[0016] Additional aspects and advantages of the present invention will be partially given in the following description, and some advantages will become apparent from the following description or be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 This is a working schematic diagram of the utility model;

[0020] Figure 3 This is a cross-sectional view of the vehicle stopper.

[0021] Figure Number:

[0022] Base 100; rotating shaft 101; torsion spring 102; limiting bar 103;

[0023] The vehicle blocking member 200; the limiting groove 201; the swinging portion 202; the abutting portion 203; the second elastic member 204; the abutting head 205; the mounting cavity 206; the push block 207; the blocking portion 208; the locking nut 209; the sliding rod 210;

[0024] a first elastic member 300;

[0025] telescopic member 400;

[0026] Wheel 500;

[0027] Track 600. DETAILED DESCRIPTION

[0028] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0029] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientation or positional relationship indicated by up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are 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 on the present invention.

[0030] In the description of this utility model, "a plurality" refers to two or more. The use of "first" or "second" is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0032] Reference below Figures 1 to 3 A vehicle arrester according to an embodiment of the present invention is described.

[0033] refer to Figures 1 to 3 As shown, the vehicle stopper according to an embodiment of the present invention includes a base 100 , a vehicle stopper 200 , a first elastic member 300 and a telescopic member 400 .

[0034] The base 100 may be a plate-like structure or other suitable structure, and may be mounted to the ground near the track 600 using anchor bolts. This prevents damage to the track 600 from the impact of trains, compared to mounting the arrester on the track 600. The base 100 is provided with a rotating shaft 101, which may extend along the length of the track 600.

[0035] The stopper 200 is sleeved on the rotating shaft 101 and can slide along the axial direction of the rotating shaft 101. The stopper 200 can be relatively fixed with the rotating shaft 101 in the circumferential direction of the rotating shaft 101, and then rotate with the rotating shaft 101. Of course, the stopper 200 can also be rotatable relative to the rotating shaft 101. The stopper 200 can be rotated to a first state, in which the end of the stopper 200 away from the base 100 is located above the track 600 to abut the front side of the wheel 500. The stopper 200 can be rotated to a second state, in which the end of the stopper 200 away from the base 100 is located outside one side of the track 600 to separate from the wheel 500 and avoid hindering the wheel 500 from moving along the track 600.

[0036] The first elastic member 300 is disposed between the stopper 200 and the base 100 . When the stopper 200 rotates to the first state to abut against the front side of the wheel 500 , the first elastic member 300 can generate elastic deformation, thereby applying an elastic force to the stopper 200 along the axial direction of the rotating shaft 101 and toward the wheel 500 .

[0037] The two ends of the telescopic member 400 are rotatably connected to the vehicle blocking member 200 and the base 100 respectively. The telescopic member 400 can be a cylinder, an oil cylinder or an electric push rod, etc., wherein when the telescopic member 400 is extended or retracted, it can drive the vehicle blocking member 200 to rotate to the first state and the second state.

[0038] In this embodiment, the base 100 can be installed near the track 600. When the vehicle needs to be prevented from slipping after parking, the telescopic part 400 is started. The telescopic part 400 can drive the vehicle blocking part 200 to rotate to the first state by telescoping. In this state, the vehicle blocking part 200 can abut the front side of the wheel 500 to prevent the vehicle from slipping. When the train needs to move, the telescopic part 400 drives the vehicle blocking part 200 to rotate to the second state. In this state, the vehicle blocking part 200 is separated from the wheel 500 and is located on the outside of the wheel 500 axially. According to the vehicle stopper of the embodiment of the present invention, since the vehicle stopper 200 can slide along the axial direction of the rotating shaft 101, and a first elastic member 300 is provided between the vehicle stopper 200 and the base 100, when the vehicle stopper 200 abuts the front side of the wheel 500 and the wheel 500 applies an impact force to the vehicle stopper 200, the first elastic member 300 can be elastically deformed and apply an elastic force to the vehicle stopper 200. The elastic force is along the axial direction of the rotating shaft 101 and toward the wheel 500, thereby having a buffering effect, reducing the impact force between the vehicle stopper 200 and the base 100, and avoiding damage caused by excessive impact force between the vehicle stopper 200 and the base 100.

[0039] refer to Figure 3As shown, in some embodiments of the present invention, the first elastic member 300 is configured as a coil spring, which is sleeved on the rotating shaft 101. The two ends of the first elastic member 300 respectively abut the vehicle stopper 200 and the base 100. For example, one side of the vehicle stopper 200 can be an abutting side, which is used to abut the wheel 500, and the first elastic member 300 can be located on the side of the vehicle stopper 200 facing away from the abutting side. In this embodiment, the first elastic member 300 is configured as a coil spring and sleeved on the rotating shaft 101. This not only facilitates installation and produces a good elastic effect, but also has a high structural strength and a long service life.

[0040] It should be noted that the first elastic member 300 may also be other structures, for example, it may also be an elastic rubber sleeve, and the elastic rubber sleeve may also be sleeved on the rotating shaft 101, which will not be described in detail here.

[0041] During use, it was found that due to factors such as the shape of the wheel 500 and the shape of the vehicle stopper 200, when the wheel 500 hits the vehicle stopper 200, part of the impact force will be transmitted to the telescopic member 400, which is easy to damage the telescopic member 400. Figure 3 As shown, in some embodiments of the present invention, the vehicle stopper 200 and the rotating shaft 101 are relatively fixed in the circumferential direction of the rotating shaft 101, and the two ends of the rotating shaft 101 are respectively provided with a torsion spring 102, and the two ends of the torsion spring 102 are respectively connected to the base 100 and the rotating shaft 101. When the telescopic member 400 is extended and retracted to drive the vehicle stopper 200 to rotate, the vehicle stopper 200 will drive the rotating shaft 101 to rotate, and then the torsion spring 102 will be twisted to generate an elastic force. This elastic force is along the circumference of the rotating shaft 101, and can further exert a buffering effect on the vehicle stopper 200 along the circumference of the rotating shaft 101, so that the impact force exerted by the wheel 500 is less transmitted to the telescopic member 400, and the telescopic member 400 is subjected to very small impact force, is less likely to be damaged, and has a longer service life.

[0042] It should be noted that in the prior art, the outer peripheral wall of the wheel 500 may not be a standard circular surface; for example, it may have an inclined area, and the outer surface of the position where the wheel stopper 200 abuts the wheel 500 may also be a spherical surface. As a result, when the wheel stopper 200 abuts the wheel 500, in addition to applying a horizontal backward thrust and vertical downward pressure to the wheel stopper 200, the wheel 500 may also apply an impact force along the axial direction of the wheel 500. This impact force can be transmitted to the telescopic member 400 and damage the telescopic member 400. In this embodiment, the installation of a torsion spring 102 between the rotating shaft 101 and the base 100 can effectively solve the above problem.

[0043] refer to Figure 3As shown, in some embodiments of the present invention, the outer side wall of the rotating shaft 101 is provided with a limiting strip 103, which extends along the axial direction of the rotating shaft 101. The vehicle blocking member 200 is provided with a sleeve hole and is sleeved on the rotating shaft 101 through the sleeve hole. The hole wall of the sleeve hole is provided with a limiting groove 201, which penetrates along the axial direction of the sleeve hole, and the limiting strip 103 is clamped in the limiting groove 201. In this embodiment, through the cooperation of the limiting strip 103 and the limiting groove 201, not only can the vehicle blocking member 200 and the rotating shaft 101 be relatively fixed in the circumferential direction of the rotating shaft 101, but it also facilitates the sliding of the vehicle blocking member 200 relative to the rotating shaft 101 along the axial direction of the rotating shaft 101, which is more practical.

[0044] refer to Figure 3 As shown, in some embodiments of the present invention, a plurality of limit bars 103 are provided and arranged along the circumference of the rotating shaft 101, and a plurality of limit grooves 201 are correspondingly provided and arranged along the circumference of the sleeve hole. For example, the limit bars 103 can be multiple and arranged along the circumference of the rotating shaft 101, the number of limit grooves 201 is the same as the number of limit bars 103 and arranged along the circumference of the sleeve hole, and the limit bars 103 correspond to the limit grooves 201 one by one and are clamped in the corresponding limit grooves 201. In this embodiment, such a configuration not only makes the relative fixation of the vehicle stopper 200 and the rotating shaft 101 in the circumferential direction of the rotating shaft 101 better, but also makes the axial sliding of the vehicle stopper 200 along the rotating shaft 101 smoother, avoiding jamming.

[0045] refer to Figure 3 As shown, in some embodiments of the present invention, the vehicle blocking member 200 includes a swinging portion 202, a contact portion 203 and a second elastic member 204. The swinging portion 202 is sleeved on the rotating shaft 101 and can slide along the axial direction of the rotating shaft 101. The first elastic member 300 is arranged between the swinging portion 202 and the base 100. The contact portion 203 is slidably installed on the swinging portion 202. The sliding direction of the contact portion 203 is parallel to the axial direction of the rotating shaft 101. The second elastic member 204 is arranged between the swinging portion 202 and the contact portion 203; wherein, when the vehicle blocking member 200 is in the first state, the contact portion 203 is used to abut the wheel 500, and the second elastic member 204 can apply an elastic force to the contact portion 203 along the sliding direction of the contact portion 203 and toward the wheel 500. When the vehicle stopper 200 rotates to the first state, causing the abutment 203 to abut the front side of the wheel 500, the abutment 203 is subjected to the impact force of the wheel 500 and slides backward, and the abutment 203 then squeezes the second elastic member 204, and the second elastic member 204 can shrink and apply an elastic force to the abutment 203. The elastic force is along the sliding direction of the abutment 203 and toward the wheel 500, thereby reducing the rigid impact force between the wheel 500 and the abutment 203, and avoiding damage to the wheel 500 and the vehicle stopper 200.

[0046] refer to Figure 3As shown, in some embodiments of the present invention, the length direction of the abutting portion 203 is parallel to the axial direction of the rotating shaft 101, and an abutting joint 205 is provided at one end of the abutting portion 203, and the abutting joint 205 is used to abut the wheel 500. The swinging portion 202 is provided with a mounting cavity 206, and the second elastic member 204 is configured as a coil spring. The second elastic member 204 is installed in the mounting cavity 206 and is sleeved on the abutting portion 203, and the abutting portion 203 is provided with a push block 207, which abuts against one end of the second elastic member 204 close to the abutting joint 205. For example, one end of the mounting cavity 206 along the length of the abutting portion 203 may be open and provided with a blocking portion 208. The blocking portion 208 and the end of the swinging portion 202 away from the blocking portion 208 are both provided with a clearance hole. The abutting portion 203 is inserted into the clearance hole. The push block 207 is located at the end of the second elastic member 204 near the blocking portion 208. One end of the second elastic member 204 abuts the push block 207, and the other end abuts the sidewall of the mounting cavity 206. When the abutting head 205 of the abutting portion 203 abuts the front side of the wheel 500, the abutting portion 203 is impacted by the wheel 500 and slides backward. The push block 207 of the abutting portion 203 abuts and squeezes the second elastic member 204, causing the second elastic member 204 to contract and apply an elastic force to the abutting portion 203. In this embodiment, the second elastic member 204 is configured as a coil spring, which is not only easy to install but also has a long service life. In addition, the elastic buffering force generated is stronger, and the practicality is improved.

[0047] It should be noted that the second elastic member 204 may also be other structures, for example, an elastic rubber sleeve, which will not be described in detail here.

[0048] refer to Figure 3 As shown, in some embodiments of the present invention, the surface of the abutment joint 205 on the side away from the abutment portion 203 is configured as a spherical surface that bulges outward. Since the wheel 500 is relatively large, the abutment joint 205 is generally located at the lower end of the front side of the wheel 500. Therefore, in addition to applying a thrust along the length direction of the abutment portion 203 to the abutment portion 203, the wheel 500 also applies a vertical downward pressure. In this embodiment, the surface of the abutment joint 205 on the side away from the abutment portion 203 is configured as a spherical surface that bulges outward. In this way, the force between the abutment joint 205 and the wheel 500 can be improved, the vertical downward pressure applied by the wheel 500 to the abutment portion 203 can be reduced, and the thrust along the length direction of the abutment portion 203 can be increased. This is not only conducive to the abutment portion 203 sliding backward along its own length direction, but also makes the abutment portion 203 less likely to be damaged.

[0049] refer to Figure 3As shown, in some embodiments of the present invention, the side of the installation cavity 206 near the abutment head 205 is provided with an opening, in which a detachable blocking portion 208 is provided. The side of the installation cavity 206 away from the abutment head 205 and the blocking portion 208 are both provided with clearance holes. The abutment head 203 is inserted through the two clearance holes, and a locking nut 209 is threadedly connected to the end of the abutment head 205 away from the abutment head 205. This arrangement facilitates assembly and replacement of the second elastic member 204 and the abutment head 203, making the operation more convenient.

[0050] refer to Figure 3 As shown, in some embodiments of the present invention, the vehicle stopper 200 is provided with a slide bar 210, which extends along the axial direction of the rotating shaft 101, and the end of the telescopic member 400 away from the base 100 is slidably mounted on the slide bar 210. For example, the end of the telescopic member 400 away from the base 100 can be provided with a connecting hole and mounted on the slide bar 210 through the connecting hole, and the telescopic member 400 and the slide bar 210 can slide relative to each other along the axial direction of the slide bar 210. In this way, when the vehicle stopper 200 slides along the axial direction of the rotating shaft 101, the telescopic member 400 can avoid interfering with the sliding of the vehicle stopper 200.

[0051] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A car arrester, characterized in that: include: A base, provided with a rotating shaft; A wheel-blocking member is sleeved on the rotating shaft and can slide along the axial direction of the rotating shaft; A first elastic member is provided between the vehicle blocking member and the base; A telescopic member, with two ends rotatably connected to the vehicle blocking member and the base respectively; In which, when the telescopic part is extended and retracted, it can drive the vehicle stopper to rotate to a first state and a second state. When the vehicle stopper is in the first state, it is used to abut the wheel, and the first elastic part can apply an elastic force to the vehicle stopper along the axial direction of the rotating shaft and toward the wheel. When the vehicle stopper is in the second state, it is separated from the wheel.

2. The car arrester according to claim 1, characterized in that: The first elastic member is configured as a coil spring. The first elastic member is sleeved on the rotating shaft. Two ends of the first elastic member are respectively in contact with the vehicle blocking member and the base.

3. The car arrester according to claim 2, characterized in that: The vehicle blocking member and the rotating shaft are relatively fixed in the circumferential direction of the rotating shaft. Torsion springs are respectively sleeved on both ends of the rotating shaft. Both ends of the torsion spring are respectively connected to the base and the rotating shaft.

4. The car arrester according to claim 3, characterized in that: A limit strip is provided on the outer side wall of the rotating shaft, and the limit strip extends along the axial direction of the rotating shaft. The vehicle blocking member is provided with a sleeve hole and is sleeved on the rotating shaft through the sleeve hole. A limit groove is provided on the hole wall of the sleeve hole, and the limit groove passes through the axial direction of the sleeve hole. The limit strip is clamped in the limit groove.

5. The car arrester according to claim 4, characterized in that: The limiting bars are provided in plurality and are arranged along the circumference of the rotating shaft, and the limiting grooves are provided in plurality and are arranged along the circumference of the sleeve hole.

6. The vehicle arrester according to any one of claims 1 to 5, characterized in that: The vehicle blocking member comprises: a swing portion, sleeved on the rotating shaft and capable of sliding along the axial direction of the rotating shaft, wherein the first elastic member is provided between the swing portion and the base; an abutting portion, slidably mounted on the swinging portion, wherein a sliding direction of the abutting portion is parallel to an axial direction of the rotating shaft; a second elastic member, disposed between the swing portion and the abutting portion; Wherein, when the vehicle blocking member is in the first state, the abutting portion is used to abut the wheel, and the second elastic member can apply an elastic force to the abutting portion along a sliding direction of the abutting portion and toward the wheel.

7. The car arrester according to claim 6, characterized in that: The length direction of the abutting portion is parallel to the axial direction of the rotating shaft, an abutting head is provided at one end of the abutting portion, and the abutting head is used to abut the wheel, the swinging portion is provided with a mounting cavity, the second elastic member is configured as a coil spring, the second elastic member is installed in the mounting cavity and sleeved on the abutting portion, the abutting portion is provided with a push block, and the push block abuts against one end of the second elastic member close to the abutting head.

8. The car arrester according to claim 7, characterized in that: A surface of the abutting head on a side facing away from the abutting portion is configured as a spherical surface convex outward.

9. The car arrester according to claim 7, characterized in that: An opening is provided on the side of the installation cavity close to the abutment joint, and a detachable sealing portion is provided in the opening. A clearance hole is provided on the side of the installation cavity away from the abutment joint and the sealing portion. The abutment portion is passed through the two clearance holes, and a locking nut is threadedly connected to the end of the abutment portion away from the abutment joint.

10. The vehicle arrester according to any one of claims 1 to 5, characterized in that: The vehicle blocking member is provided with a sliding rod, which extends along the axial direction of the rotating shaft. One end of the telescopic member away from the base is slidably sleeved on the sliding rod.

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