A wheel stop with a sliding alarm

CN224856926UActive Publication Date: 2026-10-16CHINA RAILWAY XIAN GRP CO LTD
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Patent Information

Application Number
CN202522338726.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-11-04
Publication Date
2026-10-16
Estimated Expiration
2035-11-04

AI Technical Summary

Technical Problem

[0004]然而,传统止轮器在此类场景中,同样依赖自身重量与轨道间的摩擦力来实现防溜,结构上多为单一的楔形或块状,通过人工放置在空车车轮与轨道接触的底部区域,借助机械阻挡作用限制车轮滚动,当空车重量较轻时,对止轮器的压力较小,使得止轮器与轨道间的摩擦力本就处于较低水平,容易导致止轮器滑动甚至脱落

Benefits of technology

本实用新型提供了一种滑动报警的止轮器,通过独特的“夹持-锚固”一体化结构设计,实现了显著提升的防溜安全保障效果:首先,通过嵌合底板与移动轨道顶部的配合,以及延伸板与定位底板的上下夹持构造,将传统止轮器依赖的单一摩擦力防溜机制,升级为机械嵌合与螺栓锚固相结合的双重防位移机制,有效抵抗了因空车自重轻、振动等导致的止轮器滑动甚至脱落风险;其次,定位固定件垂直穿过轨道上下两侧的穿孔进行紧固,将车辆冲击力通过止轮块、嵌合底板、延伸板直接传递至定位底板,形成一条高效的力传递路径,不仅分散了局部应力,避免了组件变形,更确保了止轮块能持续、稳定地对车轮轮缘施加阻挡作用;最终,本实用新型装置实现了止轮组件与轨道基础的刚性连接,提供了远超传统铁鞋的锚固可靠性,极大降低了车辆意外溜逸的安全隐患,特别适用于专用线等对空车停放安全要求较高的场景。

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Abstract

The utility model belongs to the technical field of wheel stopper, disclose a kind of sliding alarm's wheel stopper, including moving track, wheel stopper component, positioning base plate and positioning fixing piece, wheel stopper component includes wheel stopper block, wheel stopper block is set in the top of moving track, the bottom of wheel stopper block is fixedly connected with inlay base plate, the both sides of inlay base plate are fixedly connected with extension plate, the inside of extension plate is equipped with upper perforation, positioning base plate is set in the bottom of moving track, the inside of positioning base plate is equipped with lower perforation, positioning fixing piece sequentially passes through upper perforation and lower perforation, for realizing the relative fixation of extension plate and positioning base plate;The utility model is through the unique "clamping-anchor" integration structure design, can effectively resist the risk of wheel stopper sliding or even falling off due to light empty car deadweight, vibration and the like, especially applicable to the scene that the empty car parking safety requirement is higher in special line and the like.
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Description

Technical Field

[0001] This utility model relates to the field of wheel stoppers, specifically to a wheel stopper with a sliding alarm. Background Technology

[0002] Wheel stoppers, commonly known as "rail shoes," are specialized safety devices used in railways and rail vehicles. Their main function is to prevent vehicles parked on the tracks from slipping and sliding due to factors such as slope, wind, or accidental impacts, thereby ensuring the safety of vehicles, goods, and personnel.

[0003] In the scenario of empty cars being parked on dedicated lines, even in a track environment with no slope or a slope that is higher on the outside and lower on the inside, anti-runaway work is still crucial, and the wheel stop device, as the core anti-runaway equipment, directly affects the safety of empty cars being parked.

[0004] However, in such scenarios, traditional wheel stoppers also rely on their own weight and the friction between the wheel and the track to prevent slippage. Structurally, they are mostly simple wedge-shaped or block-shaped. They are manually placed in the bottom area where the empty wheel contacts the track, and the mechanical blocking effect restricts the wheel's rolling. When the empty car is light, the pressure on the wheel stopper is small, which makes the friction between the wheel stopper and the track already at a low level, making it easy for the wheel stopper to slip or even fall off.

[0005] Therefore, there is an urgent need for a new technology that can solve the problem that the wedge-shaped or block-shaped structures, which are mostly simple, are prone to slipping or even falling off during use. Utility Model Content

[0006] The purpose of this utility model is to provide a wheel stop with a sliding alarm to overcome the problems existing in the prior art. This utility model, through a unique integrated "clamping-anchoring" structural design, can effectively resist the risk of wheel stop slippage or even detachment caused by the light weight of the empty vehicle and vibration. It is particularly suitable for scenarios such as dedicated lines where the safety requirements for parking empty vehicles are high.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a wheel stop device with a sliding alarm, comprising: Moving track; A wheel stop assembly includes a wheel stop block, which is disposed on the top of the moving track. A fitting base plate is fixedly connected to the bottom of the wheel stop block, and extension plates are fixedly connected to both sides of the fitting base plate. An upper through hole is provided inside the extension plate. A positioning base plate is disposed at the bottom of the moving track, and a through hole is provided inside the positioning base plate; The positioning fastener passes through the upper through hole and the lower through hole in sequence to fix the extension plate and the positioning base plate relative to each other.

[0008] In some embodiments, the moving track is elongated and includes two flanges, with a web fixedly connected between the two flanges.

[0009] In some embodiments, the cross-section of the moving track is a groove.

[0010] In some embodiments, the two flanges are arranged in parallel.

[0011] In some embodiments, the width of the mating base plate is adapted to the width of the flange.

[0012] In some embodiments, the shape of the wheel stop block is adapted to the wheel flange of the vehicle to be stopped.

[0013] In some embodiments, the upper perforation is adapted to the diameter of the lower perforation.

[0014] In some embodiments, the central axes of the upper perforation and the lower perforation are located on the same straight line.

[0015] In some embodiments, the positioning fastener is a positioning bolt, which passes through the upper through hole and the lower through hole in sequence.

[0016] In some embodiments, the extension plate extends in a direction away from the mating base plate.

[0017] The above technical solution has the following advantages or beneficial effects: This invention provides a wheel stop with a sliding alarm. Through a unique integrated "clamping-anchoring" structural design, it achieves a significantly improved anti-slip safety effect: First, by cooperating with the top of the moving track through the fit of the base plate and the upper and lower clamping structure of the extension plate and the positioning base plate, the traditional wheel stop's reliance on a single frictional anti-slip mechanism is upgraded to a dual anti-displacement mechanism combining mechanical fitting and bolt anchoring. This effectively resists the risk of the wheel stop sliding or even falling off due to the light weight of the empty car and vibration. Second, the positioning fixing component is fastened by passing vertically through the perforations on the upper and lower sides of the track. The impact force of the vehicle is directly transmitted to the positioning base plate through the wheel stop block, the fitment base plate, and the extension plate, forming an efficient force transmission path. This not only disperses local stress and avoids component deformation but also ensures that the wheel stop block can continuously and stably block the wheel flange. Finally, this invention achieves a rigid connection between the wheel stop component and the track foundation, providing anchoring reliability far exceeding that of traditional wheel stops, greatly reducing the safety hazard of accidental vehicle slippage. It is particularly suitable for scenarios such as dedicated lines where the safety requirements for empty car parking are high.

[0018] In some embodiments, the grooved cross-section design of the moving track forms a natural guiding and accommodating structure, which not only allows the upper fitting base plate to be precisely embedded and restricts its horizontal displacement, enhancing the initial stability of the anti-roller assembly, but also provides accumulation space for any debris or ice and snow that may be generated, effectively preventing them from interfering with the tight fit between the anti-roller block and the track. This significantly improves the adaptability and reliability of the entire device under harsh working conditions, ensuring the long-term effective anti-slip function of the anti-roller device.

[0019] In some embodiments, by employing a symmetrical structure with two parallel flanges, it is first ensured that the contact surfaces with the upper fitting base plate and the lower positioning base plate are flat and the stress is uniform, avoiding stress concentration or loose fastening caused by structural asymmetry; secondly, the parallel flange structure facilitates standardized production and installation, while giving the track section excellent bending and torsional stiffness, enabling it to efficiently and without distortion transfer the vehicle impact force to the positioning base plate in the vertical direction, thereby constructing an extremely stable load-bearing foundation for the entire wheel stop, improving its impact resistance and structural reliability for long-term use.

[0020] In some embodiments, by setting the width of the mating base plate to match the width of the track flange, precise mating and full-section contact between the mating base plate and the top surface of the track are achieved. On the one hand, this provides initial lateral positioning and stability for the entire wheel stop assembly, effectively preventing horizontal slippage and deflection during use. On the other hand, it evenly transmits the wheel impact force to the full width of the flange through a large-area contact surface, significantly reducing local compressive stress and avoiding plastic deformation and damage to the contact surface. This improves the force transmission efficiency and structural durability, ensuring the reliability and safety of the wheel stop device during long-term operation.

[0021] In some embodiments, by employing a contoured structure adapted to the vehicle's wheel rim, the wheel stop block allows for a large-area curved surface contact and mechanical interlock when the wheel contacts the wheel stop block. This not only transforms traditional point or line contact into a more stable surface contact, greatly increasing friction and blocking effectiveness, but also precisely and evenly distributes the wheel's slippage impact along the wheel stop block structure, effectively avoiding component damage caused by stress concentration. This significantly improves the reliability of the wheel stop device's one-time successful interception, ensuring an immediate and stable blocking effect even when the vehicle has a slight tendency to slip.

[0022] In some embodiments, by setting a matching aperture, it is ensured that the positioning fastener can pass smoothly and without interference through the upper and lower holes simultaneously, realizing the precise alignment and efficient connection between the extension plate and the positioning base plate. This not only avoids assembly difficulties or loose connections caused by aperture deviation, but more importantly, it enables the two to fit tightly together, forming a unified force-bearing whole. This allows the vehicle impact force to be efficiently transferred from the wheel stop assembly to the positioning base plate, greatly improving the stability and force transmission efficiency of the entire wheel stop structure.

[0023] In some embodiments, the coaxiality setting ensures precise alignment of the upper and lower through holes, allowing the positioning fastener to penetrate vertically without any skewing or shear stress during fastening. This enables the extension plate and the positioning base plate to fit together completely, forming a stable rigid connection. This efficiently transmits the vehicle impact force to the positioning base plate along the axial direction, greatly eliminating the risk of loosening at the connection point and significantly improving the overall impact resistance and durability of the wheel chock.

[0024] In some embodiments, a positioning bolt is selected as the fixing element. It passes through the upper and lower through holes in sequence. The strong pre-tightening force generated by the threaded fastening tightly clamps the extension plate and the positioning base plate on the upper and lower sides of the moving track, forming a rigid anchor. This not only provides extremely high connection strength and anti-loosening reliability, but also efficiently transfers the impact load borne by the wheel stop block to the positioning base plate, effectively constraining the displacement of each component, thereby ensuring the structural integrity and functional stability of the wheel stop device under long-term repeated impacts.

[0025] In some embodiments, by extending the extension plate away from the mating base plate, the force fulcrum of the wheel stop assembly is effectively transferred from the top area of ​​the track to the outside. This allows the impact force from the vehicle on the wheel stop block to be transmitted to the more distant and stable positioning base plate through the lever arm formed by the extension plate, thereby generating a stabilizing torque to resist the overturning of the wheel stop block. This not only significantly enhances the impact and overturning resistance of the wheel stop assembly, but also effectively disperses local stress, avoids force concentration at the top of the track, and greatly improves the reliability and structural safety of the entire device when subjected to dynamic loads. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a sliding alarm wheel stop structure according to some embodiments of this specification; Figure 2 This is a schematic diagram illustrating the installation of a wheel stop structure for a sliding alarm according to some embodiments of this specification; Figure 3 This is a schematic diagram of the anti-roller assembly structure according to some embodiments of this specification; Figure 4This is a schematic diagram of the bottom side structure of a sliding alarm stopper according to some embodiments of this specification; Figure 5 for Figure 4 A magnified view of part A in the image; Figure 6 This is a schematic diagram of the bottom structure of the other side of a sliding alarm wheel stop according to some embodiments of this specification; In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1. Moving track; 2. Anti-wheel assembly; 3. Positioning base plate; 4. Lower through hole; 201. Anti-wheel block; 202. Fitting base plate; 203. Extension plate; 204. Upper through hole; 205. Positioning bolt. Detailed Implementation

[0027] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Example: This utility model provides a wheel stop with a sliding alarm. Through a unique integrated "clamping-anchoring" structural design, it can effectively resist the risk of the wheel stop sliding or even falling off due to the light weight of the empty vehicle and vibration. It is especially suitable for scenarios such as dedicated lines where the safety requirements for parking empty vehicles are high.

[0034] Figure 1 This is a schematic diagram of a sliding alarm stop device structure according to some embodiments of this specification. Figure 2 This is a schematic diagram of the structure and installation of a sliding alarm wheel stop device according to some embodiments of this specification. The sliding alarm wheel stop device includes a moving track 1, a wheel stop assembly 2, a positioning base plate 3, and a positioning fixing component.

[0035] In some embodiments, Figure 3The diagram below shows the structure of the anti-roller assembly according to some embodiments of this specification. The anti-roller assembly 2 includes an anti-roller block 201, which is disposed at the top of the moving track 1. A fitting base plate 202 is fixedly connected to the bottom of the anti-roller block 201, and extension plates 203 are fixedly connected to both sides of the fitting base plate 202. An upper through hole 204 is provided inside the extension plate 203. A positioning base plate 3 is disposed at the bottom of the moving track 1, and a lower through hole 4 is provided inside the positioning base plate 3. A positioning fixing member passes through the upper through hole 204 and the lower through hole 4 in sequence to fix the extension plate 203 and the positioning base plate 3 relative to each other. In some embodiments, the moving track 1 is elongated and includes two flanges, with a web fixedly connected between the two flanges.

[0036] In some embodiments, the cross-section of the moving track 1 is a groove.

[0037] In some embodiments, the two flanges are arranged in parallel.

[0038] In some embodiments, the width of the fitting base plate 202 is adapted to the width of the flange, so that the fitting base plate 202 can fit into the top of the moving track 1.

[0039] In some embodiments, the shape of the wheel stop block 201 is adapted to the wheel flange of the vehicle to be stopped, and it can block the wheel flange. By installing the wheel stop assembly 2, when the vehicle to be stopped is in a moving state or has a tendency to slide, since the shape of the wheel stop block 201 is adapted to the wheel flange, when the wheel flange of the vehicle contacts the wheel stop block 201, the wheel stop block 201 will directly block the wheel flange, and the mechanical force between the two will prevent the wheel flange from continuing to move, thereby initially limiting the sliding of the vehicle.

[0040] In some embodiments, the upper through hole 204 is adapted to the diameter of the lower through hole 4.

[0041] In some embodiments, the central axes of the upper through hole 204 and the lower through hole 4 are on the same straight line to ensure that the positioning bolt 205 can be smoothly inserted.

[0042] In some embodiments, Figure 4 This is a schematic diagram of the bottom side structure of a sliding alarm stopper according to some embodiments of this specification. Figure 5 for Figure 4 A magnified view of part A in the image. Figure 6This is a schematic diagram of the bottom structure of another side of a sliding alarm wheel stop device according to some embodiments of this specification. The positioning and fixing component is a positioning bolt 205, which passes through the upper through hole 204 and the lower through hole 4 in sequence. The wheel stop block 201 is connected to the moving track 1 through the fitting base plate 202. When the vehicle applies force to the wheel stop block 201, the fitting base plate 202 will transmit the force to the moving track 1. The positioning base plate 3 below the moving track 1 is fixed by the positioning bolt 205 passing through the upper through hole 204 of the extension plate 203 and the lower through hole 4 of the positioning base plate 3, which can provide stable support for the entire wheel stop assembly 2, counteract the thrust applied by the vehicle, and prevent the wheel stop assembly 2 from displacing itself.

[0043] In some embodiments, the upper through hole 204 and the lower through hole 4 are provided with threads, and the positioning bolt 205 is connected to the threads inside the upper through hole 204 and the lower through hole 4 to achieve relative fixation between the extension plate 203 and the positioning base plate 3.

[0044] In some embodiments, the extension plate 203 extends away from the mating base plate 202, and the extension length can meet the matching requirements with the positioning base plate 3. By installing the extension plate 203, the extension plate 203 can extend away from the mating base plate 202, and its extension length can ensure full matching with the positioning base plate 3, so that the upper through hole 204 on the extension plate 203 is precisely aligned with the lower through hole 4 on the positioning base plate 3. Since the diameters of the upper through hole 204 and the lower through hole 4 are matched and their central axes are on the same straight line, the positioning bolt 205 can smoothly pass through the two through holes, and then the positioning bolt 205 is threadedly connected to the lower through hole 4. This connection method transmits the vehicle impact force borne by the wheel stop assembly 2 to the positioning base plate 3, disperses the force points, and prevents the wheel stop assembly 2 from loosening or displacing due to excessive local force, thereby ensuring that the wheel stop block 201 can continuously and stably form an effective block against the vehicle wheel flange.

[0045] The structure and working principle of this utility model will be further explained below: The purpose of this utility model is to provide a wheel stop device with a sliding alarm. When using this device, firstly, by installing the wheel stop assembly 2, when the vehicle to be stopped is in a moving state or has a tendency to slide, because the shape of the wheel stop block 201 is adapted to the vehicle's wheel flange, when the vehicle's wheel flange contacts the wheel stop block 201, the wheel stop block 201 will directly block the wheel flange, using the mechanical force between the two to prevent the wheel flange from continuing to move, thus initially limiting the vehicle's sliding. Simultaneously, the wheel stop block 201 is connected to the moving track 1 through the fitting base plate 202. When the vehicle applies force to the wheel stop block 201, the fitting base plate 202 will transmit the force to the moving track 1. The positioning base plate 3 below the moving track 1 is fixed by positioning bolts 205 passing through the upper through hole 204 of the extension plate 203 and the lower through hole 4 of the positioning base plate 3, which can provide support for the entire wheel stop assembly 2. Provides stable support, counteracts the thrust applied by the vehicle, and prevents the wheel stop assembly 2 from shifting. Then, by installing the upper extension plate 203, the extension plate 203 can be extended away from the mating base plate 202. Its extension length can ensure full cooperation with the positioning base plate 3, so that the upper through hole 204 on the extension plate 203 is precisely aligned with the lower through hole 4 on the positioning base plate 3. Since the diameters of the upper through hole 204 and the lower through hole 4 are matched and their central axes are on the same straight line, the positioning bolt 205 can smoothly pass through the two through holes. Then, the positioning bolt 205 is threadedly connected to the lower through hole 4. This connection method transmits the vehicle impact force borne by the wheel stop assembly 2 to the positioning base plate 3, disperses the force points, and prevents the wheel stop assembly 2 from loosening or shifting due to excessive local force, thereby ensuring that the wheel stop block 201 can continuously and stably form an effective block against the vehicle wheel flange.

[0046] In this invention, by installing the wheel stop assembly 2, when the vehicle to be stopped is in a moving state or has a tendency to slide, the wheel stop block 201, whose shape is adapted to the vehicle's wheel flange, will directly block the wheel flange when the vehicle's wheel flange contacts the wheel stop block. The mechanical force between the two will prevent the wheel flange from continuing to move, thus initially limiting the vehicle's sliding. At the same time, the wheel stop block 201 is connected to the moving track 1 through the fitting base plate 202. When the vehicle applies force to the wheel stop block 201, the fitting base plate 202 will transmit the force to the moving track 1. The positioning base plate 2 below the moving track 1 is fixed by the positioning bolt 205 passing through the upper through hole 204 of the extension plate 203 and the lower through hole 4 of the positioning base plate 3, which can provide stable support for the entire wheel stop assembly 2, counteract the thrust applied by the vehicle, prevent the wheel stop assembly 2 from displacing itself, and thus ensure continuous blocking of the vehicle's wheel flange, ultimately achieving a reliable wheel stop effect and avoiding danger caused by the vehicle's accidental sliding.

[0047] In this utility model, by installing the upper extension plate 203, the extension plate 203 can be extended in a direction away from the fitting base plate 202. Its extension length can ensure full cooperation with the positioning base plate 3, so that the upper through hole 204 on the extension plate 203 is precisely aligned with the lower through hole 4 on the positioning base plate 3. Since the diameters of the upper through hole 204 and the lower through hole 4 are matched and their central axes are on the same straight line, the positioning bolt 205 can smoothly pass through the two through holes. Then, the positioning bolt 205 is threadedly connected to the lower through hole 4. This connection method transmits the vehicle impact force borne by the wheel stop assembly 2 to the positioning base plate 3, disperses the force points, and prevents the wheel stop assembly 2 from loosening or shifting due to excessive local force. This ensures that the wheel stop block 201 can continuously and stably form an effective block against the vehicle wheel flange, further improving the wheel stop reliability of the wheel stop device.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for illustrating the technical concept of this utility model and should not be used to limit the scope of protection of this utility model. Any modifications made to the technical solutions based on the technical concept proposed by this utility model shall fall within the scope of protection of the claims of this utility model.

Claims

1. A wheel stop with a sliding alarm, characterized in that, include: Moving track (1); The wheel stop assembly (2) includes a wheel stop block (201), which is disposed on the top of the moving track (1). A fitting base plate (202) is fixedly connected to the bottom of the wheel stop block (201), and extension plates (203) are fixedly connected to both sides of the fitting base plate (202). An upper through hole (204) is provided inside the extension plate (203). A positioning base plate (3) is provided at the bottom of the moving track (1), and a bottom through hole (4) is provided inside the positioning base plate (3). The positioning fastener passes through the upper through hole (204) and the lower through hole (4) in sequence to fix the extension plate (203) and the positioning base plate (3) relative to each other.

2. The wheel stopper with sliding alarm according to claim 1, characterized in that, The moving track (1) is long and includes two flanges, with a web fixedly connected between the two flanges.

3. The wheel stopper with sliding alarm according to claim 2, characterized in that, The cross-section of the moving track (1) is a groove.

4. The wheel stopper with sliding alarm according to claim 2, characterized in that, The two flanges are arranged in parallel.

5. A wheel stop with a sliding alarm according to claim 2, characterized in that, The width of the mating base plate (202) is adapted to the width of the flange.

6. A wheel stop device with a sliding alarm according to claim 1, characterized in that, The shape of the wheel stop block (201) is adapted to the wheel flange of the vehicle to be stopped.

7. A wheel stop device for sliding alarm according to claim 1, characterized in that, The upper perforation (204) is adapted to the diameter of the lower perforation (4).

8. A wheel stop with a sliding alarm according to claim 1, characterized in that, The central axes of the upper perforation (204) and the lower perforation (4) are on the same straight line.

9. A wheel stop device for sliding alarm according to claim 1, characterized in that, The positioning fastener is a positioning bolt (205), which passes through the upper through hole (204) and the lower through hole (4) in sequence.

10. A wheel stop device for sliding alarm according to claim 1, characterized in that, The extension plate (203) extends away from the mating base plate (202).