CN101607563B - Brake Rail Lifting Mechanism - Google Patents

Abstract

The invention discloses a brake rail lifting mechanism for an anti-sliding (or parking) device of a railway vehicle, which comprises a shifting fork cam (5), a fan-shaped cam (2), a connecting rod (3), a supporting arm (1) and an outer spring baffle plate (4). The shifting fork cam (5) is supported on a bracket, the underside of a shifting fork is provided with a long hole which is connected with a long hole at the middle part of the connecting rod (3) through a pin shaft, two ends of the connecting rod (3) are hinged with pin holes at the lower part of the fan-shaped cam (2) through the pin shaft, the fan-shaped cam (2) is supported on the bracket, the front end of the supporting arm (1) is positioned on a working face of the fan-shaped cam (2), the back end of the supporting arm (1) is hinged with the outer spring baffle plate (4) through the pin shaft, and the front end top of the supporting arm (1) is connected with a brake rail (7) together through a bolt. The brake rail lifting mechanism is developed based on the prior cam parking device, keeps the high braking energy and technical index of the prior peak tail parking device, and has the advantages of simple structure, reliable performance, low cost and convenient maintenance.

Description

Brake Rail Lifting Mechanism

Technical field

The invention relates to a brake rail elevating mechanism for a railway vehicle anti-slip (or parking) device. the

technical background

At present, there is no uniform and standardized measure to prevent slipping of trains waiting to be unloaded at the arrival line with locomotives removed, or trains that have been programmed at the departure line but not attached to the lead aircraft, and each station can only Conditions to take corresponding anti-slip measures, summed up in the following five types: iron shoes anti-slip, wooden shoes anti-slip, hand brake, small air cylinder pressure-holding brake and combined anti-slip. the

Anti-slip iron (wooden) shoes need to be equipped with full-time anti-slip personnel, which is labor-intensive, inconvenient, and easy to lose. Once lost or the iron shoes are misplaced or missed, it will inevitably cause the train to derail, jam or even roll over, and the consequences will be unimaginable. . the

The hand brake is anti-slip. Before driving each time, someone must be sent to the car to release the hand brake. It is labor-intensive, inconvenient, and unsafe, especially on the arrival and departure lines of the electrified section. People are likely to approach or accidentally go to the gate Intruding into the dangerous area of the high-voltage power grid, or due to thunderstorms and other conditions, it is easy to cause electric shocks to workers and endanger personal safety, so there are serious safety hazards. the

The small air cylinder maintains the pressure and brakes to prevent slipping, and judges whether the braking is effective by inspecting the extension of the brake cylinder by the on-duty staff. Once an abnormality is found, immediately go back to the duty room to take the brake for remediation. If the natural environment is harsh If the problem cannot be found in time due to reasons such as the fatigue of the operator or the operator, it may cause the train to slip away, and there is a potential safety hazard. In addition, the manual brake tightening device is labor-intensive and inconvenient. the

When anti-slip using the above methods alone is not enough to ensure safety, some stations adopt combined anti-slip, that is, brake shoes (or hand brake) + small air cylinder for pressure-holding braking, but the fundamental problem has not been solved, and the safety hazard remains. exist. the

Bearings for railway vehicles are changed from sliding bearings to rolling bearings, which greatly reduces the running resistance of the vehicles, and the vehicles can start under the action of a small external force. This improves the starting performance of the locomotive and reduces the energy consumption of the locomotive. At the same time, it also puts forward higher requirements for the anti-skidding of the parking vehicles, especially when the line has a certain slope, coupled with wind, earthquake or vibration when the train passing by the adjacent line, it is easy to cause the parking vehicles to slip. the

Contents of the invention

The purpose of the present invention is to provide a brake rail lifting mechanism for the anti-slip (or parking) device on the ground of railway vehicles, so as to meet the needs of static anti-slip of railway vehicles and fast passing of vehicles. the

The present invention solves the technical problem, and the adopted technical scheme is: a brake rail lifting mechanism for a railway vehicle anti-slip (or parking) device, which is developed through partial transformation and innovation on the basis of the existing peak-tail parking device. The mechanism includes a fork cam, a fan cam, a connecting rod, a support arm, and a spring outer baffle. Its structural features are: the fork cam is composed of a cam and a fork, and the fork is arranged radially along the cam. The elongated hole is hinged with the pin hole in the middle of the connecting rod through the pin shaft. Both ends of the connecting rod are hinged with the fan-shaped cam, and the fan-shaped cam is hinged with the bracket through another pin hole. The fan-shaped cam working surface is composed of two sections of curves, one is an equal diameter curve and the other is a variable diameter curve. The working surface of the fan-shaped cam is close to the bottom of the support arm. When the support arm slides on the isometric curve, the brake rail moves in translation; when the support arm slides on the variable diameter curve, the brake rail rises or falls. The front end of the support arm is provided with a supporting plate, and the supporting plate is provided with two holes for connecting the brake rail. The rear end of the support arm is provided with two protruding shoulders, and the concentric circular holes are provided on the protruding shoulders, through which the concentric circular holes and the spring outer baffle are hinged. The upper part of the support arm is provided with a protrusion, and the protrusion is provided with a threaded hole, which is used for connecting the fine-adjusting bolt of the brake rail. the

When the mechanism is from the non-working state to the working state, the connecting rod is firstly driven by the fork cam to make a curve translation, and the fan-shaped cam is driven by the connecting rod to rotate. The arm is pushed to the braking position, realizing the purpose that the brake rail is lifted first and then expanded. After the brake rails are lifted and stretched, the distance between the two brake rails is greater than the inner distance of the vehicle wheel, and the braking force is applied to the parking vehicle to achieve the purpose of anti-slip braking. For the slipping vehicle, at this time , the wheel pair squeezes the brake rail, and the friction force exerted by the brake rail on the side of the wheel consumes the kinetic energy of the sliding car to achieve braking. the

When the mechanism is from the working state to the non-working state, its process is exactly the opposite of the above-mentioned process from the non-working state to the working state, so that the purpose of the brake rail retracting first and then descending is realized. After the brake rail falls back into place, the distance between the highest point of the brake rail and the top surface of the basic rail is less than 25 mm, and the maximum distance between the two brake rails is less than 1353 mm, which meets the requirements for the main machine to travel and the vehicle to pass quickly. the

Compared with the prior art, the beneficial effects of the present invention are: it can meet the needs of the static anti-slip vehicle on the delivery line, avoid various potential safety hazards existing in the anti-slip vehicle on the delivery line, reduce labor intensity, improve work efficiency, and at the same time , keeping the high braking energy and technical indicators of the original peak-tail parking device, it can be realized that a single anti-slip product is shared by the dispatching line and the shunting line, and the structure is simple, the performance is reliable, the cost is low, and the maintenance is convenient. the

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and the implementation side. the

Figure 1 is a schematic diagram of the brake rail lifting mechanism

Figure 2 is a schematic diagram of the structure of the fork cam

Figure 3 is a schematic diagram of the fan cam structure

Figure 4 is a schematic diagram of the connecting rod structure

Figure 5 is a schematic diagram of the support arm structure

Detailed ways

Example

Figure 1 shows that a specific embodiment of the present invention is: a brake rail lifting mechanism for a vehicle anti-slip (or parking) device on a railway line, comprising a shift fork cam 5, a fan-shaped cam 2, a connecting rod 3, and a support arm 1. The spring outer baffle plate 4 has the following structural features: the shift fork cam 5 is supported on the bracket, and there is a long hole under the shift fork, which is connected with the long hole in the middle of the connecting rod 3 through a pin shaft, and the connecting rod 3 Both ends are hinged with the pin hole 6 at the lower part of the fan-shaped cam 2 through the pin shaft, the fan-shaped cam 2 is supported on the bracket through the pin shaft, the front end of the support arm 1 is located on the working surface of the fan-shaped cam 2, and the rear end of the support arm 1 passes through The pin shaft is hinged with the spring outer baffle plate 4, and the top of the front end of the support arm 1 is connected together with the brake rail 7 by bolts. the

Claims (4)

1. A brake rail lifting mechanism for a railway vehicle parking device, which contains a shift fork cam (5), a fan-shaped cam (2), a connecting rod (3), a brace arm (1), and a spring outer baffle plate (4). That is, the composition of the brake rail lifting mechanism is: the shift fork cam (5) is fixed on the bracket, and the front end of the shift fork on the shift fork cam (5) is provided with an elongated hole, through which the pin shaft and the connecting rod (3) The elongated hole in the middle is connected, the two ends of the connecting rod (3) are hinged with the pin hole (6) at the lower part of the fan-shaped cam (2) through the pin shaft, the fan-shaped cam (2) is supported on the bracket, and the front end of the support arm (1) is located On the working surface of the fan-shaped cam (2), the top of the front end of the support arm (1) is connected with the brake rail (7) by bolts, and the rear end of the support arm (1) is hinged with the spring outer baffle plate (4) by a pin. 2. The brake rail lifting mechanism for a railway vehicle parking device according to claim 1, characterized in that: the shift fork cam (5) is composed of a cam and a shift fork, the shift fork is arranged radially along the cam, and the front end of the shift fork is arranged There are elongated holes. 3. The brake rail lifting mechanism for a railway vehicle parking device according to claim 1, characterized in that: the working surface of the fan-shaped cam (2) is composed of two sections of curves, one section is an equidiameter arc, and the other section is a variable arc. diameter curve. 4. The brake rail lifting mechanism for a railway vehicle parking device according to claim 1, characterized in that: the front end of the support arm (1) is provided with a supporting plate, the supporting plate is provided with two holes, and the support arm (1) The rear end of the rear end is provided with two protruding shoulders, and concentric circular holes are provided on the protruding shoulders, and a projection is provided on the upper part of the support arm (1), and a threaded hole is provided on the projection.

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