Ejector pin type control signal sending device of parking device

Abstract

The utility model discloses an ejector pin type control signal transmitting device of a parking device. The ejector pin type control signal sending device of the parking device comprises a base, a travel switch is arranged on the base, an ejector rod in sliding connection with the base is arranged opposite to a push rod of the travel switch, one end of the ejector rod extends into the base and is used for triggering the travel switch, the other end of the ejector rod extends out of the base, and a limiting piece is arranged on the side, extending out of the base, of the ejector rod. A reset spring connected to the outer side of the ejector rod in a sleeving mode is arranged between the limiting piece and the outer side wall of the base, and the reset spring is in a pressed state all the time in the working process. The railway parking anti-slip device solves the problem that the prior art cannot be directly used, so that the safety of the railway parking anti-slip device cannot be improved.

Description

Technical Field

[0001] This utility model relates to the field of track safety equipment technology, and in particular to a stop device pin-type control signal transmitting device. Background Technology

[0002] A Chinese utility model patent with publication number CN222538807U, entitled "A Railway Parking Anti-Slippage Device," describes a process where "a preload is applied to the spring assembly by tightening a nut. When the wheel enters the parking space, it compresses the brake rails on both sides, compressing the inner and outer springs. Simultaneously, the inner and outer springs provide braking force to the brake rails on both sides, locking the wheel. When the vehicle needs to leave, the hydraulic cylinder is activated. The piston rod of the cylinder extends and pushes against the inner wall of the front end plate of the frame. The cylinder, under reaction force, pulls the bolts via the flange. The bolts pull the sliding frame A, further compressing the inner and outer springs. The sliding frames A and B slide inwards, and after the wheel loses braking force, the vehicle can leave. After the vehicle leaves, the hydraulic cylinder is unloaded, the piston rod retracts, and the inner and outer springs, as well as the sliding frames A and B, return to their original positions." Currently, to ensure a safe distance for the brake rails to move inwards for smooth vehicle departure, a limit switch is needed. However, due to the large distance between the sliding frames A and B, existing limit switches cannot be used directly. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a pin-type control signal transmitting device for a railway parking device that can improve the safety of railway parking anti-runaway devices.

[0004] To achieve the above objectives, the technical solution adopted by the parking device pin-type control signal transmitting device of this utility model is as follows:

[0005] A parking device pin-type control signal transmitting device includes a base, a limit switch is provided on the base, a push rod is provided opposite the limit switch push rod and is slidably connected to the base, one end of the push rod extends into the base to trigger the limit switch, the other end of the push rod extends out of the base, a limit member is provided on the side of the push rod extending out of the base, and a return spring is provided between the limit member and the outer wall of the base and sleeved on the outside of the push rod. During operation, the return spring is always in a compressed state.

[0006] Preferably, the top rod is a bolt, the head of which extends into the base, and the limiting member is a limiting nut that is threadedly connected to the bolt.

[0007] Preferably, the end of the bolt extending from the base is threadedly connected to a gap adjustment block. When adjusting the preload of the inner and outer springs, the distance between the sliding frames A and B will also change. At this time, the gap adjustment block can be used to adapt to the change in the distance between the sliding frames A and B, ensuring that the set distance between the bolt head and the limit switch push rod remains unchanged.

[0008] Preferably, a first locking nut and a second locking nut are provided between the screw and the limiting nut and the gap adjusting block. A first spring washer is provided between the first locking nut and the limiting nut, and a second spring washer is provided between the second locking nut and the gap adjusting block. The first locking nut and the first spring washer are used to prevent the limiting nut from loosening, and the second locking nut and the second spring washer are used to prevent the gap adjusting block from loosening.

[0009] Preferably, the outer wall of the base is provided with a protective tube that is sleeved on the outside of the return spring. The protective tube can prevent debris from getting stuck on the return spring and affecting the normal return of the push rod.

[0010] Preferably, the base is detachably connected to a protective cover. The protective cover protects the limit switch from rain or impact from foreign objects.

[0011] Compared with the prior art, this utility model has the following advantages:

[0012] The distance between the push rod and the limit switch push rod is preset. When the railway anti-runaway device is about to enter the release position, the hydraulic cylinder is activated, and the sliding frames A and B slide inward, pushing the push rod to slide into the base. At the same time, the second limit component compresses the return spring until the push rod triggers the limit switch, indicating that the brake rail has moved to a safe position, ensuring that the vehicle leaves smoothly, thereby improving the safety of the railway anti-runaway device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the parking device pin-type control signal transmitting device of this utility model.

[0014] Figure 2 This is a schematic diagram of the spring assembly.

[0015] The components include: 1. base; 11. limit switch; 12. protective cover; 13. through hole; 14. protective tube body; 2. top rod; 3. limit component; 4. reset spring; 5. gap adjustment block; 6. first locking nut; 7. second locking nut; 8. first spring washer; and 9. second spring washer. Detailed Implementation

[0016] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0017] like Figure 1-2As shown, a parking device pin-type control signal transmitting device includes a base 1, on which a limit switch 11 is mounted. A protective cover 12 is detachably connected to the base, protecting the limit switch from rain or impact from foreign objects. A push rod 2 is arranged opposite the push rod of the limit switch. A through hole 13 is opened on the side wall of the base through which the push rod passes, allowing the push rod to slide within the through hole. The push rod is a bolt, with its head extending into the base. A limiting member 3 is installed on the side of the bolt extending out of the base. The limiting member is a limiting nut threadedly connected to the bolt. A return spring 4, sleeved on the outside of the push rod, is installed between the limiting nut and the outer wall of the base. A protective tube 14, sleeved on the outside of the return spring, is welded to the outer wall of the base. The protective tube prevents debris from getting stuck on the return spring and affecting the normal return of the push rod. The heads of the limiting nut and the bolt cooperate to prevent the bolt and the return spring from... The bolt extends from the base and is threaded to the end of the base, connecting to the gap adjustment block 5. When adjusting the preload of the inner and outer springs, the distance between the sliding frames A and B will also change. At this time, the gap adjustment block can be used to adapt to the change in the distance between the sliding frames A and B, ensuring that the set distance between the bolt head and the limit switch push rod remains unchanged. During operation, the gap adjustment block is in contact with the sliding frame A, and the reset spring is always under pressure. The screw is located between the limit nut and the gap adjustment block, where the first locking nut 6 and the second locking nut 7 are installed. The first spring washer 8 is installed between the first locking nut and the limit nut, and the second spring washer 9 is installed between the second locking nut and the gap adjustment block. The first locking nut and the first spring washer are used to prevent the limit nut from loosening, and the second locking nut and the second spring washer are used to prevent the gap adjustment block from loosening.

[0018] The specific working process and principle of a pin-type control signal transmitting device for a parking device: First, adjust the distance L between the bolt head and the limit switch push rod, where L = A + B. A is the compression of the inner and outer springs when the vehicle enters the braking position. The railway parking anti-runaway device relies on the elastic force provided by the inner and outer springs to brake the vehicle. The compression of the inner and outer springs is determined during the design phase of the railway parking anti-runaway device and is also corrected during the later debugging phase. Therefore, the compression of the inner and outer springs is known. B is the safe distance the brake rail moves inward when the vehicle leaves. B can be set to 20mm, which is the further compression of the inner and outer springs when the vehicle leaves. When adjusting L, keep the gap adjusting block that is in contact with the sliding frame A stationary. Adjust by turning the bolt. After adjustment, keep the bolt stationary and turn the second locking nut to compress the second spring washer into contact with the gap adjusting block. When a vehicle enters, the wheels press against the brake rails, causing the brake rails on both sides to move inwards. The inner and outer springs are compressed, shortening the distance between sliding frames A and B. Sliding frame A, through the gap adjustment block, pushes the push rod towards the limit switch side. The movement distance matches the compression of the inner and outer springs. When the vehicle needs to leave, the hydraulic cylinder is activated. The cylinder piston rod extends, further shortening the distance between sliding frames A and B. The brake rails on both sides move away from the wheels and inwards. The push rod continues to move towards the limit switch side until it triggers the limit switch, ensuring the brake rails move to a safe position. The railway anti-runaway device is fully in the released position, allowing the vehicle to leave smoothly. After the vehicle leaves, the hydraulic cylinder is unloaded, and the inner and outer springs drive sliding frames A and B to reset. Simultaneously, the reset spring drives the push rod to reset, and the railway anti-runaway device re-enters the braking position. This invention installs the existing limit switch on the base and uses a push rod slidably connected to the base to trigger the limit switch, solving the problem that existing limit switches cannot be used directly, ensuring smooth vehicle departure, and improving the safety of the railway anti-runaway device.

Claims

1. A parking device pin-type control signal transmitting device, characterized in that: The device includes a base, on which a limit switch is installed. Opposite to the limit switch push rod is a push rod that is slidably connected to the base. One end of the push rod extends into the base to trigger the limit switch, and the other end of the push rod extends out of the base. A limit component is installed on the side of the push rod that extends out of the base. A return spring is sleeved on the outside of the push rod between the limit component and the outer wall of the base. During operation, the return spring is always under pressure.

2. The parking device pin-type control signal transmitting device according to claim 1, characterized in that: The top rod is a bolt, with the head of the bolt extending into the base, and the limiting component is a limiting nut that is threadedly connected to the bolt.

3. The parking device pin-type control signal transmitting device according to claim 2, characterized in that: The end of the bolt extending out of the base is threadedly connected to a clearance adjustment block.

4. The parking device pin-type control signal transmitting device according to claim 3, characterized in that: The bolt is located between the limiting nut and the gap adjusting block, and a first locking nut and a second locking nut are provided. A first spring washer is provided between the first locking nut and the limiting nut, and a second spring washer is provided between the second locking nut and the gap adjusting block.

5. The parking device pin-type control signal transmitting device according to claim 4, characterized in that: The outer wall of the base is provided with a protective tube that is sleeved on the outside of the reset spring.

6. The parking device pin-type control signal transmitting device according to claim 5, characterized in that: The base is detachably connected to a protective cover.

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