Fast rail-exchanging vehicle for jointless track and rail-exchanging method

Abstract

The invention relates to a fast rail-exchanging vehicle for a jointless track and a rail-exchanging method. The front and back ends of a travel mechanism of a fast rail-exchanging vehicle for a railway are provided with a guardrail recovering device; a crosstie-pressing device, a steel rail retraction device for clamping and moving a new steel rail and an old steel rail, a steel rail clincher and an operating position are arranged at intervals below the vehicle body between two bogies of the travel mechanism, the operating position is arranged according to the need; and the crosstie-pressing device and the steel rail clincher are arranged respectively close to the bogies at the two ends; and the vehicle can perform the marshalling operation together with the auxiliary vehicles, such as a fastener recovered vehicle, and the like. When the fast rail-exchanging vehicle for the railway is adopted for construction, the operation is divided into two parts of the old steel rail retraction operation and the new steel rail retraction operation which are synchronously carried out. The vehicle can reach the rail-exchanging speed of more than 2km / h, can be applied to the fast rail-exchanging need of the jointless track, complete the rail exchanging within 50 meters and is suitable for the construction needs of the section with less curve radius. The invention has the advantages of safety and high degree of automation.

Description

technical field [0001] The invention relates to a railway track-changing vehicle and a rail-changing method thereof, in particular to a rapid rail-changing vehicle and a rapid rail-changing method for replacing seamless lines. Background technique [0002] There are many existing railway track changing methods and machines, such as Chinese patents CN2263610Y, CN2871617, CN2510526Y, and CN1152169C, which disclose different types of track changing machines suitable for different purposes. And after removing most of the fasteners of the old rails, the old rails are continuously moved away from the rail-bearing grooves section by section while walking by the machine, and the new rails are continuously placed in the rail-supporting grooves section by section. , large-scale track changing machinery such as the overhaul train produced by the Swiss matisa company generally has to change the sleeper at the same time as the track changing, and cannot complete a single track changing o...

AI Technical Summary

Problems solved by technology

[0002] There are many existing railway track changing methods and machines, such as Chinese patents CN2263610Y, CN2871617, CN2510526Y, and CN1152169C, which disclose different types of track changing machines suitable for different purposes. And after removing most of the fasteners of the old rails, the old rails are continuously moved away from the rail-bearing grooves section by section while walking by the machine, and the new rails are continuously placed in the rail-supporting grooves section by section. , large-scale track changing machinery such as the overhaul train produced by the Swiss matisa company generally has to change the sleeper at the same time as the track changing, and cannot complete a single track changing operation, resulting in huge construction costs, narrow scope of application, and low operating efficiency, usually only up to 1km The speed of the rail change operation at / h cannot be adapted to complete the rail change work in a short time (that is, the skylight point), and cannot guarantee the overall operation of the line

The track change at the skylight point requires short-term high-efficiency, safety and quickness. Usually, only one operation vehicle can complete the track change, or another auxiliary operation vehicle can be set up to perform auxiliary operations such as fastener recovery. Usually, the track change needs to be completed within 50 meters. In order to To reduce the workload of changing rails, 90% of the fasteners are generally removed manually before changing the rails. The length of the rail changing construction is generally the length of two main engines. The situation is very different. The length of its construction work is generally more than 9 main engines. Usually, it can complete the rail change with multiple operating vehicles within 200 meters. The stress state of the rails is very different. Both the lifting method and device of the guard rail cannot be directly applied

In the existing technology, the track change at the skylight point generally adopts simple track change equipment, and hundreds or even hundreds of relevant cooperating construction personnel are equipped to complete the rapid track change, which has a low degree of automation and increases potential safety hazards

[0003] During the track change process at the skylight point, due to the short distance of the track change, the displacement and deformation of the new rail and the old rail are relatively large, and both need to bear a large force , making it difficult for the new rail and the old rail in the load-bearing section to maintain an upright state, which may easily cause safety accidents such as overturning and falling off of the rail-changing machine, endangering the safety of construction personnel

When working on a curve, the above-mentioned safety accidents are more likely to occur

The rail retracting device of the simple rail changing machine usually only has two rail clamping devices, one is used to clamp and place the new rail into the rail bearing groove, and the other is used to clamp and remove the old rail from the rail bearing groove. Moved away, in the process of changing the rail, the work of placing the new rail in place is done manually. Due to the small number of rail clamping devices, the clamping points of the rail are too few, and it is not according to the displacement process of the rail during the rail change. Different clamping methods are set at different heights, different horizontal positions and other factors. The torsion of the new rail and the old rail is mainly controlled manually, which is difficult to be effectively controlled and has potential safety hazards. It is difficult to ensure that it is placed within a certain range after being neutralized and disassembled, which will affect the operation of another line and greatly endanger driving safety.

[0004]The simple rail changing machine is not equipped with a rail guard device, because it is difficult to ensure the upright state and the constant distance between the two rails after the rail is removed, so the wheels of the traveling mechanism In the process of operation, it is very easy to fall off the road, and it is very easy to cause safety accidents such as the operation vehicle falling off the road or overturning. The general treatment method requires the help of other equipment to complete the reset process, such as using a crane to hoist the construction machinery such as the operation vehicle From the beginning, the bogie wheel set is reset manually, or multiple hydraulic jacks are used to lift the construction machinery support to a certain height at different positions, and then the wheel set is reset manually. In this process, due to the existing technology The bogie is not fixed in a vertical direction, and the bogie part usually needs to be lifted again during the rising process of the car body to complete the alignment and reset of the bogie wheel set and the track.

Since the traveling mechanism of the car body itself does not have a self-recovering device, the requirements for the site and equipment for the lifting operation are relatively high, and the number of workers in the lifting process is large, so it is difficult to guarantee the safety of the construction personnel.

[0005] On the other hand, in the process of changing the track, the old rail and the sleeper will usually carry the sleeper upward during its upward movement due to the adhesion of the rubber pad, resulting in displacement , the ballast slides into the bottom of the sleepers, resulting in irregular arrangement and placement of the sleepers, which makes it difficult to lay new rails, affects the continuous progress of changing rails, and has low efficiency. Most of the rail changing cars in the prior art are not equipped with sleeper pressing devices Although the P95 overhaul train produced by the Swiss matisa company is equipped with a pillow-pressing device, its main mechanism for the pillow-pressing function is only two pillow-pressing wheels connected to the car body

During operation, the two pillow rollers roll close to the inner sides of the two rails and along the working direction of the car body. The disadvantage of this rolling pillow method is that the pillow surface between the roller and the sleeper is a circular arc, and the contact area is small. The general pillow device Only one sleeper can be pressed at the same time, but in actual operation, often not only one sleeper sticks to the rail due to the aging of the rubber pad, but several sleepers may be lifted at the same time. If this method of pressing sleepers is used, only When one sleeper is pressed, but the other sleepers are not pressed, the ballast slides into the bottom of the sleeper, resulting in a series of problems such as the arrangement and irregular position of the sleeper, and the sleeper pressing effect of the pillow pressing device is completely lost, and there are still potential safety hazards

[0006]In addition, since the track change mileage of each blockade point is about 2 kilometers when the skylight point is changed, the manual recovery efficiency is low, and it is very difficult to complete the fastener recovery in the skylight point Difficult, the fastener recovery device of large-scale construction machinery cannot adapt to the construction of road sections with small curve radius, such as curve radius less than 180 meters, and the material loss is serious

Therefore, the track changing method and device in the prior art do not provide a machine that can quickly change the track and quickly recover the metal fasteners at the same time, and is not suitable for the needs of quick track change using the skylight point, and needs further improvement

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