A wheel stop for preventing skidding

Abstract

The utility model discloses a kind of anti-slip wheel stopper, relate to wheel stopper technical field.A kind of anti-slip wheel stopper, comprising: fixed seat, frame, baffle arm, load block, cylinder and torsion spring;Frame includes fixed block fixed on fixed seat, and two force arms symmetrically fixed on the both sides of fixed block;Baffle arm is rotatably connected between two force arms by pivot one;The bottom of baffle arm is equipped with a movable slot, and pivot one transversely penetrates the movable slot.The utility model bears wheel impact load independently by load block, provides power only when state switches with cylinder, realizes the complete separation of driving and bearing force, effectively protects cylinder from impact damage, fundamentally solves the technical problem of short service life and poor reliability of traditional pneumatic wheel stopper due to cylinder direct bearing force.

Description

Technical Field

[0001] This utility model relates to the field of wheel stoppers, specifically to an anti-slip wheel stopper. Background Technology

[0002] Rail transport is an indispensable and crucial mode of transportation in urban surface transportation, underground coal mines, and various industrial and mining sites. Rail vehicles such as equipment trains and flatbed cars operating in this system must rely on wheel chocks for reliable parking during platform stops, ramp parking, loading and unloading operations, and equipment maintenance to prevent vehicle runaway and ensure operational safety and order.

[0003] To improve operational convenience and automation, pneumatically driven wheel stoppers have emerged in existing technologies. These devices typically use a cylinder to drive a stop arm to rotate around an axis, thereby achieving automatic raising and lowering of the stop arm. However, many of these pneumatic wheel stoppers currently suffer from a common structural flaw: When the stop arm is raised to the working position, most of the impact load and continuous static load generated by the wheel on the stop arm are directly applied to the piston rod of the cylinder through the transmission mechanism. This forces the cylinder, a precision pneumatic component that should mainly provide driving function, to bear huge non-axial forces and pressures for a long time, which seriously deviates from its design conditions.

[0004] Therefore, in response to the aforementioned defects of pneumatic wheel stoppers, an innovative technical solution is urgently needed that can optimize the mechanical structure without sacrificing the convenience of pneumatic drive. This solution would ensure that, in the wheel-stopping parking state, the force applied to the wheel is borne by a dedicated mechanical structure, rather than by the cylinder, thereby decoupling the driving and load-bearing functions and fundamentally improving the durability and reliability of the wheel stopper.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model provides an anti-slip wheel stop device to solve the issues raised in the background section.

[0007] This utility model provides the following technical solution: an anti-slip wheel stop device, comprising: a fixed base, a frame, a stop arm, a load block, a cylinder, and a torsion spring; The frame includes a fixed block fixed to a fixed base, and two lever arms symmetrically fixed on both sides of the fixed block; The stop arm is rotatably connected between the two lever arms via a pivot. The bottom of the stop arm is provided with a movable groove, and a rotating shaft passes through the movable groove laterally; The torsion spring is sleeved on the rotating shaft and located in the movable groove. One end of the torsion spring abuts against the upper groove wall of the movable groove, and the other end abuts against the top of the fixed block. The load block is fixed to the fixed block and is located on the side of the stop arm away from the torsion spring; The cylinder is vertically fixed on the mounting base, and the cylinder's drive rod passes vertically through the mounting base, with the top of the drive rod located at the bottom of the stop arm, corresponding to the position between the torsion spring and the load block.

[0008] Preferably, a second rotating shaft is fixedly passed through the top of the stop arm, and the two ends of the second rotating shaft extend to both sides of the stop arm, with a roller rotatably connected to each end.

[0009] Preferably, it also includes a base, a fixed seat fixed on the base, and a cylinder vertically penetrating and fixed on the base.

[0010] Preferably, the load block is provided with an elastic buffer layer on the side facing the stop arm. The elastic buffer layer is made of wear-resistant rubber or polyurethane, and the surface of the elastic buffer layer is provided with an arc-shaped fitting surface that is adapted to the side wall of the stop arm.

[0011] Preferably, it also includes a condition monitoring sensor, which is mounted on the stop arm or frame to detect the rotational position of the stop arm.

[0012] Preferably, it also includes an air pump and a control valve; the air pump is connected to the cylinder via an air pipe, and the control valve is used to control the movement of the cylinder.

[0013] The anti-slip wheel stop provided in this embodiment of the utility model has the following beneficial effects: This utility model independently bears the impact load of the wheel by means of a load block, and the cylinder provides power only when the state is switched, thereby realizing the complete separation of driving and load bearing, effectively protecting the cylinder from impact damage, and fundamentally solving the technical problem of short life and poor reliability of traditional pneumatic wheel stop devices caused by the direct load bearing of the cylinder. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of the present invention from angle one; Figure 2 This is a schematic diagram of the structure of this utility model from angle two; Figure 3 This is a structural schematic diagram of angle three of this utility model; Figure 4 This utility model Figure 1 Schematic diagram of the cross-sectional structure along the AA direction; Figure 5 This utility model Figure 2 A magnified view of part B in the image. Detailed Implementation

[0015] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0016] See Figures 1-5 .

[0017] To address the problems mentioned in the background section, this utility model provides an anti-slip wheel stop to solve the aforementioned technical problems. The technical solution is as follows: An anti-slip wheel stop device includes: a fixed base 120, a frame 130, a stop arm 140, a load block 160, a cylinder 170, and a torsion spring 180; The frame 130 includes a fixing block 131 fixed on the fixing seat 120, and two lever arms 132 symmetrically fixed on both sides of the fixing block 131. The stop arm 140 is rotatably connected between the two lever arms 132 via a pivot 141; The bottom of the stop arm 140 is provided with a movable groove 142, and the rotating shaft 141 passes through the movable groove 142 laterally. The torsion spring 180 is sleeved on the rotating shaft 141 and located in the movable groove 142. One end of the torsion spring 180 abuts against the upper groove wall of the movable groove 142, and the other end abuts against the top of the fixed block 131. The load block 160 is fixed to the fixing block 131 and is located on the side of the stop arm 140 away from the torsion spring 180; The cylinder 170 is vertically fixed on the fixed base 120. The drive rod of the cylinder 170 passes vertically through the fixed base 120, and the top of the drive rod is located at the bottom of the stop arm 140, corresponding to the position between the torsion spring 180 and the load block 160.

[0018] In this embodiment, a second rotating shaft 151 is fixedly passed through the top of the stop arm 140. The two ends of the second rotating shaft 151 extend to both sides of the stop arm 140, and each end is rotatably connected to a roller 152.

[0019] It should be noted that, in this embodiment, the two rollers 152 set on the top of the stop arm 140 via the second rotating shaft 151 have the following functions: when the wheel contacts the wheel stop, the rollers can convert the original sliding friction into rolling friction, which can effectively reduce the action resistance. They can also buffer and disperse the impact force of the wheel through rolling contact, avoiding rigid collision damage to the stop arm and the wheel. At the same time, they guide the wheel to smoothly slide into the stop position, which protects the equipment and improves the reliability of the wheel stop action.

[0020] In this embodiment, a base 110 is also included, a fixing seat 120 is fixed on the base 110, and a cylinder 170 is vertically fixed on the base 110.

[0021] In this embodiment, the load block 160 is provided with an elastic buffer layer on the side facing the stop arm 140. The elastic buffer layer is made of wear-resistant rubber or polyurethane, and the surface of the elastic buffer layer is provided with an arc-shaped fitting surface, which is adapted to the side wall of the stop arm 140.

[0022] In this embodiment, a position sensor is also included. The position sensor is disposed on the stop arm 140 or the frame 130 and is used to detect the rotation position of the stop arm 140.

[0023] In this embodiment, an air pump and a control valve are also included; the air pump is connected to the cylinder 170 via an air pipe, and the control valve is used to control the action of the cylinder 170.

[0024] The working method of the anti-slip wheel stop provided in this embodiment of the utility model is as follows: (1) Working method when vehicles need to pass (establishing the release status) ① Drive start: The control valve is activated, guiding the compressed air supplied by the air pump into the lower chamber of cylinder 170, driving the piston rod to extend upward.

[0025] ② Depressing the stop arm: The top of the piston rod acts directly on one side of the bottom of the stop arm 140, that is, between the torsion spring 180 and the load block 160, to provide a downward torque for the stop arm, overcome the restoring torque of the torsion spring 180, and cause the stop arm to start rotating counterclockwise downward around the pivot 141.

[0026] ③ Fully lowered: The stop arm 140 is continuously pressed down under the drive of the cylinder until it is fully lowered onto the track plane. At this time, the stop arm reaches the release position, making way for the wheels. The cylinder 170 remains extended to maintain the lowered position of the stop arm.

[0027] (2) Working method when preventing vehicle movement (establishing wheel stop state) ① Drive release: The control valve reverses, and compressed air enters the upper chamber of cylinder 170, driving the piston rod to retract downwards.

[0028] ② Automatic rebound of the stop arm: The downward movement of the piston rod releases the pressure on the bottom of the stop arm 140. At this time, under the restoring torque of the torsion spring 180, the stop arm 140 automatically and rapidly rebounds clockwise around the pivot 141 until its sidewall is tightly fitted with the elastic buffer layer on the load block 160.

[0029] ③ Mechanical load-bearing: When the wheel contacts and presses against the roller 152 at the top of the stop arm, the enormous impact force and continuous static load attempt to push the stop arm to rotate backward. This force is directly transmitted to the load block 160 through the stop arm 140. The load block, through its mass inertia and rigid connection with the fixed seat 120, effectively counteracts this force and becomes the main load-bearing component. During this process, all the force exerted by the wheel is borne by the mechanical structure composed of the load block and the torsion spring; the cylinder does not participate in load bearing at all.

[0030] ④ Status Confirmation: Throughout the process, the position sensor detects the angle position of the stop arm 140° in real time and feeds back the "stop wheel" or "release" status signal to the control system to realize the monitoring of the operating status and safety interlock.

[0031] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and concept of this utility model, and all such substitutions or changes should fall within the protection scope of the appended claims.

Claims

1. A wheel-stop device, characterized in that, include: Mounting base, frame, stop arm, load block, cylinder, and torsion spring; The frame includes a fixed block fixed to a fixed base, and two lever arms symmetrically fixed on both sides of the fixed block; The stop arm is rotatably connected between the two lever arms via a pivot. The bottom of the stop arm is provided with a movable groove, and a rotating shaft passes through the movable groove laterally; The torsion spring is sleeved on the rotating shaft and located in the movable groove. One end of the torsion spring abuts against the upper groove wall of the movable groove, and the other end abuts against the top of the fixed block. The load block is fixed to the fixed block and is located on the side of the stop arm away from the torsion spring; The cylinder is vertically fixed on the fixed base, and the cylinder's drive rod passes vertically through the fixed base, with the top of the drive rod located at the bottom of the stop arm, corresponding to the position between the torsion spring and the load block.

2. The anti-slip wheel stop according to claim 1, characterized in that, A second pivot is fixedly inserted through the top of the stop arm. The two ends of the second pivot extend to both sides of the stop arm, and each end is rotatably connected to a roller.

3. The anti-slip wheel stop according to claim 1, characterized in that, It also includes a base, a mounting base fixed to the base, and a cylinder vertically penetrating and fixed to the base.

4. The anti-slip wheel stop according to claim 1, characterized in that, The load block has an elastic buffer layer on the side facing the stop arm. The elastic buffer layer is made of wear-resistant rubber or polyurethane, and the surface of the elastic buffer layer has an arc-shaped fitting surface that fits the side wall of the stop arm.

5. The anti-slip wheel stop according to claim 1, characterized in that, It also includes a position sensor, which is mounted on the stop arm or frame to detect the rotational position of the stop arm.

6. The anti-slip wheel stop according to claim 1, characterized in that, It also includes an air pump and a control valve; the air pump is connected to the cylinder through an air pipe, and the control valve is used to control the movement of the cylinder.

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