Adjustable self-locking two-way wheel stop

Abstract

This utility model relates to an adjustable self-locking bidirectional wheel stop. Rotating the long handle allows the cam to push two push plates to move left and right, compressing the spring. When the long axis of the cam contacts the push plates at both ends, the distance between the two push plates reaches its maximum, and the wheel stop is in an open state. At this time, the stop block of the wheel stop is placed under the train wheel using the long handle, so that the inclined surface of the stop block contacts the wheel tread. Slightly rotating the long handle and pulling it out causes the compressed spring to automatically reset. The spring pushes the two push plates towards the cam, allowing the push plates to move the stop block towards the center to clamp the wheel. This eliminates the need for any part of the installer's body to enter the vehicle boundary, ensuring worker safety.

Description

Technical Field

[0001] This utility model relates to the field of rail transit braking technology, specifically to an adjustable self-locking bidirectional wheel stop. Background Technology

[0002] Wheel stoppers are an essential safety device in rail transit, also known as wheel shoes. They are usually installed on the rails and in contact with the wheels. When there is a risk of train slippage, they convert the rolling friction between the wheel and the rail into sliding friction, thereby preventing the parked locomotive or vehicle from slipping or going out of control.

[0003] Existing wheel stoppers are typically made of metal and require manual placement of two stoppers under the wheels to prevent the train from rolling forward or backward. These existing wheel stoppers often have short handles or no handles at all, requiring installers to bend down close to the wheels to complete the installation. In some cases, part of the installer's body may even have encroached on the vehicle's clearance gauge, greatly increasing the risk of accidents. Summary of the Invention

[0004] To overcome the problem of dangerous installation of existing wheel stop devices, this utility model provides an adjustable self-locking bidirectional wheel stop device.

[0005] To achieve the above objectives, this utility model provides an adjustable self-locking bidirectional wheel stop, comprising:

[0006] case;

[0007] The cam is hinged to the outside of the housing;

[0008] A long handle, detachably connected to the cam's socket, is used to drive the cam to rotate;

[0009] Two lead screws are respectively installed on both sides of the cam, the lead screws are located inside the housing and are screwed to the housing;

[0010] Two push plates are respectively disposed on both sides of the cam and abut against the cam. The push plates are sleeved on the outer periphery of the lead screw and are slidably connected to the lead screw.

[0011] Two springs are respectively sleeved on the two lead screws, and the springs are installed between the lead screws and the push plate; and

[0012] Two stop blocks are connected to the push plate respectively. The stop blocks are provided with inclined surfaces, and the inclined surfaces are provided with striped protrusions.

[0013] Optionally, the adjustable self-locking bidirectional wheel stop further includes two sliders, which are arranged one-to-one with the two push plates. The sliders are sleeved on the outer periphery of the lead screw and are slidably connected to the lead screw. The sliders and the push plates are connected by multiple double-headed bolts and multiple slider locking nuts.

[0014] Optionally, the adjustable self-locking bidirectional wheel stop further includes two adjusting plates, each corresponding to one of the two springs. The adjusting plates are sleeved on the lead screw and screwed to it, and the springs are connected to the lead screw through the adjusting plates.

[0015] Optionally, the adjustable self-locking bidirectional wheel stop further includes two support frames, with the two adjusting plates and the two stop blocks corresponding one-to-one. One end of the support frame is connected to the slider by a mounting bolt, and the other end is connected to the stop block by a mounting bolt. The support frame is U-shaped.

[0016] Optionally, the bottom surface of the stop block is provided with striped protrusions.

[0017] Optionally, the stop block is made of rubber or plastic.

[0018] The technical solutions provided by the embodiments of this utility model may include the following beneficial effects:

[0019] Rotating the long handle allows the cam to push the two push plates to the left and right, compressing the spring. When the long axis of the cam contacts the push plates at both ends, the distance between the two push plates reaches its maximum, and the wheel stop is in an open state. At this time, the stop block of the wheel stop is placed under the train wheel through the long handle, so that the inclined surface of the stop block contacts the wheel tread. Slightly rotating the long handle and pulling it out causes the compressed spring to automatically reset. The spring pushes the two push plates towards the cam, allowing the push plates to move the stop block towards the center to clamp the wheel. This eliminates the need for any part of the installer's body to enter the vehicle boundary, ensuring worker safety. Attached Figure Description

[0020] Figure 1 This is an isometric view of an adjustable self-locking bidirectional wheel stop according to an exemplary embodiment of the present invention.

[0021] Figure 2 This is an exploded view of an adjustable self-locking bidirectional wheel stop according to an exemplary embodiment of the present invention.

[0022] Figure 3 This is a schematic diagram of an adjustable self-locking bidirectional wheel stop in the open state according to an exemplary embodiment of the present invention.

[0023] Figure 4 This is a schematic diagram of the clamping state of an adjustable self-locking bidirectional wheel stopper according to an exemplary embodiment of the present invention.

[0024] Figure 5 This is an isometric view of the stop block in an adjustable self-locking bidirectional stopper according to an exemplary embodiment of the present invention.

[0025] The following are the reference numerals: 1. Stop block; 2. Housing; 3. Cam; 4. Lead screw; 5. Slider; 6. Spring; 7. Support frame; 8. Lead screw lock nut; 10. Slider lock nut; 11. Inclined surface; 12. Double-ended bolt; 13. Long handle; 14. Push plate; 16. Adjusting plate; 18. Mounting bolt. Detailed Implementation

[0026] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0027] In this invention, unless otherwise stated, directional terms such as "upper," "lower," "front," "rear," "left," and "right" are used for ease of description based on the drawing directions in the corresponding figures, while "inner" and "outer" are defined based on the contours of the corresponding components themselves. Terms such as "first" and "second" used in this invention are used to distinguish one element from another and do not have sequential or importance implications. Furthermore, when the following description refers to the figures, unless otherwise indicated, the same numbers in different figures represent the same or similar elements.

[0028] Please see Figures 1 to 5 This utility model provides an adjustable self-locking bidirectional wheel stop, comprising: a housing 2; a cam 3, hinged to the outside of the housing 2; a long handle 13, detachably connected to the insertion hole of the cam 3 for driving the cam 3 to rotate; two lead screws 4, respectively installed on both sides of the cam 3, the lead screws 4 being located inside the housing 2 and screwed to the housing 2 by lead screw locking nuts 8; two push plates 14, respectively located on both sides of the cam 3 and abutting against the cam 3, the push plates 14 being sleeved on the outer periphery of the lead screws 4 and slidably connected to the lead screws 4; two springs 6, respectively sleeved on the two lead screws 4, the springs 6 being installed between the lead screws 4 and the push plates 14; and two stop blocks 1, respectively connected to the push plates 14, the stop blocks 1 having an inclined surface 11, the inclined surface 11 having striped protrusions.

[0029] Understandably, rotating the long handle 13 causes the cam 3 to push the two push plates 14 to move left and right, compressing the spring 6. When the long shaft of the cam 3 contacts the push plates 14 at both ends, the distance between the two push plates 14 reaches its maximum, and the wheel stop is in an open state. At this time, the stop block of the wheel stop is placed under the train wheel through the long handle 13, so that the inclined surface 11 of the stop block 1 contacts the wheel tread. Slightly rotating the long handle 13 and pulling it out causes the compressed spring 6 to automatically reset. The spring 6 pushes the two push plates 14 to move closer to the cam 3, allowing the push plates 14 to move the stop block towards the center to clamp the wheel. This eliminates the need for part of the installer's body to enter the vehicle boundary, ensuring worker safety.

[0030] The long handle 13 is detachable from the wheel stopper, allowing the installation or release of multiple wheel stoppers to be completed using one long handle 13. At the same time, the clamping and release of the stop block 1 can be controlled remotely by operating the handle, preventing installers from getting close to the wheels and causing safety hazards.

[0031] In one embodiment, the adjustable self-locking bidirectional wheel stop further includes two sliders 5, which are correspondingly arranged with two push plates 14. The sliders 5 are sleeved on the outer periphery of the lead screw 4 and are slidably connected to the lead screw 4. The sliders 5 and the push plates 14 are connected by multiple double-ended bolts 12 and multiple slider locking nuts 10. The locking stroke between the two stop blocks 1 can be changed by adjusting the distance between the sliders 5 and the push plates 14 to meet the stopping requirements of wheels of different specifications.

[0032] In one embodiment, the adjustable self-locking bidirectional wheel stop further includes two adjusting plates 16, each corresponding to one of the two springs 6. The adjusting plates 16 are sleeved on and screwed onto the lead screw 4, and the springs 6 are connected to the lead screw 4 through the adjusting plates 16. By rotating the adjusting plates 16, the tension of the springs 6 can be adjusted, thereby changing the clamping force of the wheel stop.

[0033] In one embodiment, the adjustable self-locking bidirectional wheel stop further includes two support frames 7, two adjusting plates 16 and two stop blocks 1 are arranged one-to-one, one end of the support frame 7 is connected to the slider 5 by mounting bolt 18, and the other end is connected to the stop block 1 by mounting bolt 18. The support frame 7 is U-shaped.

[0034] In one embodiment, the bottom surface of the stop block 1 has striped protrusions. The bottom of the stop block 1 has a groove to prevent lateral slippage from the rail, and the striped protrusions on the top and bottom of the stop block 1 increase friction. The stop block 1 is made of a flexible material, including but not limited to rubber and plastic, which effectively protects the train wheels. If damaged, only the stop block 1 needs to be replaced; the entire wheel stop assembly does not need to be replaced. Furthermore, stop blocks 1 of different specifications can be installed on the wheel stop assembly to accommodate different wheels, including but not limited to rail vehicle wheels.

[0035] The wheel stop proposed in this embodiment can be installed at a relatively long distance without requiring installers to approach the wheel, thus fully ensuring the personal safety of installers.

[0036] The gap and clamping force between the wheel stopper and the wheel proposed in this embodiment are adjustable and controllable, which can meet the stopping requirements of wheels of different sizes. It is not limited to wheel stopping in the field of rail transit, and has a self-clamping function, which can ensure that the stop block 1 fits tightly between the wheel and the rail to the maximum extent.

[0037] The wheel stop proposed in this embodiment uses an elastic material to make the stop block 1, which effectively avoids damage to the wheel and rail. The stop block 1 has anti-slip protrusions, which increases the friction. In addition, the stop block 1 is detachable, so only one part needs to be replaced when damaged, and there is no need to replace the whole wheel stop.

[0038] The wheel stop proposed in this embodiment can achieve different wheel stopping requirements and stopping environments by changing the material, specifications and shape of the stop block 1;

[0039] The wheel stop proposed in this embodiment can be adapted to different types of wheels, including but not limited to the stopping of wheels of rail vehicles, automobiles, and mining cars, by adjusting the distance between the slider 5 and the push rod of the cam 3 or even changing the overall structural dimensions of the wheel stop.

[0040] This invention has been described through embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of this invention, modifications can be made to these features and embodiments to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, this invention is not limited to the specific embodiments of the utility model described herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this invention.

Claims

1. An adjustable self-locking bidirectional wheel stop, characterized in that, include: Shell (2); The cam (3) is hinged to the outside of the housing (2); A long handle (13) is detachably connected to the socket of the cam (3) for driving the cam (3) to rotate; Two lead screws (4) are respectively installed on both sides of the cam (3). The lead screws (4) are located inside the housing (2) and are screwed to the housing (2). Two push plates (14) are respectively disposed on both sides of the cam (3) and abut against the cam (3). The push plates (14) are sleeved on the outer periphery of the lead screw (4) and are slidably connected to the lead screw (4). Two springs (6) are respectively sleeved on the two lead screws (4), and the springs (6) are installed between the lead screws (4) and the push plate (14); as well as Two stop blocks (1) are connected to the push plate (14) respectively. The stop block (1) is provided with an inclined surface (11) and the inclined surface (11) is provided with striped protrusions.

2. The adjustable self-locking dual turner of claim 1, wherein, The adjustable self-locking bidirectional wheel stop also includes two sliders (5), which are arranged one-to-one with the two push plates (14). The sliders (5) are sleeved on the outer periphery of the lead screw (4) and are slidably connected to the lead screw (4). The sliders (5) and the push plates (14) are connected by multiple double-headed bolts (12) and multiple slider locking nuts (10).

3. The adjustable self-locking dual turner of claim 2, wherein, The adjustable self-locking bidirectional wheel stop also includes two adjusting plates (16), which are arranged one-to-one with two springs (6). The adjusting plates (16) are sleeved on the lead screw (4) and screwed to the lead screw (4). The springs (6) are connected to the lead screw (4) through the adjusting plates (16).

4. The adjustable self-locking dual turner of claim 3, wherein, The adjustable self-locking bidirectional wheel stop also includes two support frames (7), two adjustment plates (16) and two stop blocks (1) are arranged one-to-one. One end of the support frame (7) is connected to the slider (5) by mounting bolts (18), and the other end is connected to the stop block (1) by mounting bolts (18). The support frame (7) is U-shaped.

5. The adjustable self-locking dual turner of claim 4, wherein, The bottom surface of the stop block (1) is provided with striped protrusions.

6. The adjustable self-locking dual turner of claim 4, wherein, The stop block (1) is made of rubber or plastic.

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