Rail welding system for rail welding on machine body separation implementation line

Abstract

The rail welding system comprises a rail welding vehicle and a rail welding machine, the rail welding vehicle is provided with a rail welding operation supply unit, the rail welding operation supply unit communicates with the rail welding machine through an extension pipeline, and the rail welding vehicle is provided with a crane; the rail welding machine further comprises a machine body support which is provided with a rail welding machine placing position. The method has the beneficial effects that a GPW-1200 type air pressure rail welding machine can be adopted to implement welding operation on a steel rail line on a ramp section with the height being 130 mm or above and the height being 25% o or below of a railway line, thermit welding is comprehensively canceled, and the method has great advantages in the aspects of improving the rail replacement overhaul construction quality and ensuring the travel safety of passengers.

Description

Technical Field

[0001] This application belongs to the technical field of rail welding operations, and specifically relates to a rail welding system for implementing on-line rail welding with the separation of the machine body, which is applicable to the on-line long rail welding operation of using a rail welding machine to separate from a pneumatic rail welding vehicle on a railway line. Background Art

[0002] As an integrated device integrating machinery, electricity, hydraulics, and automatic control, a rail welding machine requires equipment such as an engine, a generator set, a hydraulic pump station, and a chiller as power sources. Since these power equipment are large in size and cannot be integrated with the rail welding machine, they need to be separately arranged on the rail welding vehicle and connected to the rail welding machine using pipelines. On the other hand, the self-weight of a pneumatic rail welding machine exceeds 3 tons, and it needs to be transported to the operation site by a carrier and then assisted by a crane to accurately position the rail welding machine before it can operate.

[0003] Reference Figure 1 As shown, currently, there are no successful cases or mature technologies for implementing welding operations using a GPW-1200 type pneumatic rail welding machine after separating from a pneumatic rail welding vehicle at home and abroad. The main reasons are: First, the rail welding machine cannot be independently and stably placed on the ballast bed after separating from the crane. Second, the lengths of various pipelines of the rail welding machine can only meet the operation requirements of the rail welding machine under the maximum travel of the crane. Once the rail welding machine separates from the crane, it will not be able to operate due to insufficient pipeline length. Utility Model Content

[0004] The purpose of this application is to provide a rail welding system for implementing on-line rail welding with the separation of the machine body, design a machine body support so that the rail welding machine can be stably placed on the ballast bed after separating from the vehicle body, and at the same time design a pipeline extension scheme to solve the problem that the rail welding machine will not be able to operate due to insufficient pipeline length after separating from the crane. The two design schemes cooperate with each other to enable the GPW-1200 type pneumatic rail welding machine to have the ability to independently perform welding operations after separating from the pneumatic rail welding vehicle.

[0005] The purpose of this application is achieved through the following technical solutions:

[0006] A rail welding system for implementing on-line rail welding with the separation of the machine body includes a rail welding vehicle and a rail welding machine. A rail welding operation supply unit is provided on the rail welding vehicle. The rail welding operation supply unit is connected to the rail welding machine through an extended pipeline. A crane is provided on the rail welding vehicle; it further includes a machine body support, and a rail welding machine placement position is provided on the machine body support.

[0007] Furthermore, the rail welding operation supply unit includes a hydraulic oil unit, a gas unit, a cooling water unit, and a power supply unit. The extended pipeline includes a hydraulic oil extension pipe, a gas extension pipe, a cooling water extension pipe, and a cable extension line. The hydraulic oil unit is connected to the rail welding machine through the hydraulic oil extension pipe, the gas unit is connected to the rail welding machine through the gas extension pipe, the cooling water unit is connected to the rail welding machine through the cooling water extension pipe, and the power supply unit is connected to the rail welding machine through the cable extension line.

[0008] Further, the power supply unit, the hydraulic oil unit, the cooling water unit, and the gas unit are arranged one by one from the front to the back of the rail welding vehicle, and the length of the cable extension is 15 - 19 m.

[0009] Further, the length of the hydraulic oil extension pipe is 12.5 - 16.5 m, the length of the cooling water extension pipe is 10 - 14 m, and the length of the gas extension pipe is 6 - 14 m.

[0010] Further, both the gas unit and the gas extension pipe include four independent parts: oxygen, acetylene, air, and argon.

[0011] Further, the pipeline lengths of the oxygen, acetylene, and air parts in the gas extension pipe are 6 - 10 m, and the pipeline length of the argon part in the gas extension pipe is 10 - 14 m.

[0012] Further, the crane is arranged at the rear of the rail welding vehicle.

[0013] Further, the body support is provided with a convex structure spanning across the track.

[0014] Further, the body support includes a first longitudinal support rod and a second longitudinal support rod arranged on the left and right sides. A first cross bar is connected between the first longitudinal support rod and the second longitudinal support rod at the front side, and a second cross bar is connected at the rear side. Body supports are provided on both the first longitudinal support rod and the second longitudinal support rod, and convex structures spanning across the track are formed on both the first cross bar and the second cross bar.

[0015] Further, a support assembly is further included, and the track and / or the roadbed support the body support through the support assembly.

[0016] The technical features of this application are as follows:

[0017] 1. The special support bracket has sufficient stability to ensure that the rail welding machine is placed stably and reliably after being separated from the crane, and there is no shaking, displacement, or inclination when the rail welding machine is manually pushed.

[0018] 2. After the rail welding machine is separated from the pneumatic rail welding vehicle, the rail welding machine can operate normally by extending the pipeline.

[0019] The beneficial effects of this application: It can realize on-line rail welding operations using a GPW - 1200 type pneumatic rail welding machine in sections with a super elevation of more than 130 mm and a slope of less than 25‰ on railway lines, completely eliminating thermite welding, and having great advantages in improving the quality of track replacement and overhaul construction and ensuring the safety of passenger travel.

[0020] The main solution of the present application and its various further alternative solutions can be freely combined to form multiple solutions, all of which are solutions that can be adopted and claimed in the present application; and in the present application, (each non-conflicting alternative) alternatives can be freely combined with each other and with other alternatives. Those skilled in the art can understand that there are various combinations based on the prior art and common general knowledge after understanding this solution, all of which are the technical solutions to be protected in the present application, and will not be enumerated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the existing rail welding operation.

[0022] Figure 2 is a schematic diagram of the rail welding operation of the present application.

[0023] Figure 3 is a schematic diagram of the layout of the extended pipeline of the present application.

[0024] Figure 4 is a schematic diagram of the body support structure of the present application.

[0025] In the figures: 1 - rail welding vehicle, 2 - rail welding machine, 3 - extended pipeline, 4 - crane, 5 - body support, 6 - roadbed, 7 - track, 8 - support assembly; 101 - hydraulic oil unit, 102 - gas unit, 103 - cooling water unit, 104 - power supply unit; 301 - hydraulic oil extension pipe, 302 - gas extension pipe, 303 - cooling water extension pipe, 304 - cable extension line; 501 - first longitudinal support rod, 502 - second longitudinal support rod, 503 - first cross bar, 504 - second cross bar, 505 - body support seat. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The present application will be further described below in conjunction with specific embodiments and the accompanying drawings.

[0027] Refer to Figure 2 、 Figure 3 and Figure 4 As shown, a rail welding system for welding rails on a body separation implementation line includes a rail welding vehicle 1, a rail welding machine 2, an extended pipeline 3, a crane 4, a body support 5 and a support assembly 8.

[0028] The rail welding vehicle 1 travels on the track 7 and can move forward or backward along the track 7, mainly used to transport the rail welding machine 2 to the operation position. A rail welding operation supply unit is provided on the rail welding vehicle 1 to provide water, electricity, gas and oil required for the operation of the rail welding machine 2. The rail welding machine 2 is used for welding the track 7, welding the joints of two sections of track rails into one body. Both the rail welding vehicle 1 and the rail welding machine 2 are currently known technologies and will not be elaborated here.

[0029] The rail welding vehicle 1 is equipped with a crane 4. The crane 4 is arranged at the rear of the rail welding vehicle 1 and has the functions of horizontal rotation and hoisting and lowering. The crane is used to hoist the rail welding machine 2 from the rail welding vehicle 1 downward, or to lift the rail welding machine 2 and recover it from the bracket to the rail welding vehicle 1.

[0030] The rail welding operation supply unit is connected to the rail welding machine 2 through an extension pipeline 3. The extension pipeline 3 meets the requirement that the pipeline needs to be extended as a whole when the rail welding machine 2 operates away from the crane 4. At the same time, the extension length of the extension pipeline 3 enables the rail welding vehicle 1 to move forward a certain distance, avoiding the problem of the risk of vehicle slipping when the rail welding vehicle 1 and the rail welding machine 2 are in the same slope position.

[0031] The rail welding operation supply unit includes a hydraulic oil unit 101, a gas unit 102, a cooling water unit 103 and a power supply unit 104. The extension pipeline 3 includes a hydraulic oil extension pipe 301, a gas extension pipe 302, a cooling water extension pipe 303 and a cable extension line 304. The hydraulic oil unit 101 is connected to the rail welding machine 2 through the hydraulic oil extension pipe 301, the gas unit 102 is connected to the rail welding machine 2 through the gas extension pipe 302, the cooling water unit 103 is connected to the rail welding machine 2 through the cooling water extension pipe 303, and the power supply unit 104 is connected to the rail welding machine 2 through the cable extension line 304. Both the gas unit 102 and the gas extension pipe 302 include four independent parts: oxygen, acetylene, air and argon. Each independent supply unit on the rail welding vehicle 1 provides support for the operation of the rail welding machine 2.

[0032] The power supply unit 104, the hydraulic oil unit 101, the cooling water unit 103 and the gas unit 102 are arranged one by one from the front to the rear along the rail welding vehicle 1. The length of the cable extension line 304 is 15 - 19 m, the length of the hydraulic oil extension pipe 301 is 12.5 - 16.5 m, the length of the cooling water extension pipe 303 is 10 - 14 m, and the length of the gas extension pipe 302 is 6 - 14 m. Among them, the pipeline lengths of the oxygen, acetylene and air parts in the gas extension pipe 302 are 6 - 10 m, and the pipeline length of the argon part in the gas extension pipe 302 is 10 - 14 m. If the positions of the various supply units on the rail welding vehicle 1 are different, the extension lengths of the corresponding pipelines are also different. This length range meets the extension and connection requirements of the rail welding vehicle 1.

[0033] The body bracket 5 is provided with a placement position for the rail welding machine. The body bracket 5 is used to support the rail welding machine 2, meeting the support height and operation space required for the rail welding machine 2 in track welding. At the same time, the body bracket 5 is provided with a convex structure spanning across the track 7, so that the body bracket 5 can span across the track 7 without the track 7 affecting the placement of the bracket.

[0034] The body support 5 includes a first longitudinal rod 501, a second longitudinal rod 502, a first cross rod 503, a second cross rod 504, and a body support 505. The first longitudinal rod 501 and the second longitudinal rod 502 are respectively arranged on the left and right sides, and the first cross rod 503 and the second cross rod 504 are respectively arranged on the front and back sides. The first cross rod 503 and the second cross rod 504 are welded between the first longitudinal rod 501 and the second longitudinal rod 502 to form the main frame of the support.

[0035] Two of the longitudinal rods are used for the support transition between the rail welding machine 2 and the roadbed 6. Convex structures spanning across the track 7 are formed on both the first cross rod 503 and the second cross rod 504. The two cross rods are used to form an integral frame and achieve the spanning of the track 7.

[0036] Body supports 505 are provided on both the first longitudinal rod 501 and the second longitudinal rod 502. Two body supports 505 are welded on both longitudinal rods, thereby forming a rectangular four-point support placement, which can ensure the stable placement of the rail welding machine 2.

[0037] The track 7 and / or the roadbed 6 support the body support 5 through the support assembly 8. The support assembly 8 provides a lateral support force for the body support 5 to ensure that the body support 5 can still remain stable under the lateral and / or longitudinal slopes without relative sliding, avoiding affecting the operation stability.

[0038] One aspect of this application is to solve the difficulty of extending pipelines after the rail welding machine detaches from the vehicle body.

[0039] For the "separation method" to succeed, scientifically matching the extended length of the pipelines between the rail welding machine and the vehicle body is the key. If the pipeline extension is too short, the pad rail area cannot be vacated, the lifting height of the rail to be welded is insufficient, and there is a risk of the heater and the box rubbing against bolts or the track slab. On the contrary, if the pipeline extension is too long, it is easy to cause fluctuations in the pouring flow rate at the oxygen and acetylene outlets, which is not conducive to controlling the welding quality. It also additionally increases the workload of pipeline recovery and reduces the operation efficiency. After analyzing the gas flow control principle of the gas pressure rail welding machine, by experimenting with the changes in the pouring flow rate at the gas outlet under various pipeline lengths, the proportional relationship between the pipeline extension length and the gas pressure was found. After inspection, the test weld specimens within the pipeline extension range of this application can withstand a 5.1-meter high drop hammer test and remain unbroken for 7 consecutive drop hammers, and the welding quality meets the requirements of the railway standard.

[0040] Another aspect of this application is to solve the stability problem of the rail welding machine placed on the support bracket.

[0041] 1. Accurately measure the external dimensions of the GPW-1200 type rail welding machine and analyze it in combination with the self-weight of the rail welding machine. It is determined that the four-point support method is used to support the rail welding machine, which can ensure that the rail welding machine is placed stably and reliably after detaching from the crane, and there is no shaking or tilting when manually pushing the rail welding machine.

[0042] 2. Since the bottom plate of the rail welding machine housing and the side wall plate are welded at 90°, the support point of the rail welding machine is selected here to increase the contact area between the support seat and the machine body.

[0043] 3. The support device is designed with a support seat that is 200 mm long and 50 mm wide. At the same time, the fitting surface between the support seat and the rail welding machine is designed with anti-slip measures to prevent the rail welding machine from tilting.

[0044] 4. The support device adopts a frame design, which is convenient for installation and disassembly, and has good overall stability.

[0045] The foregoing basic examples of the present application and their respective further selected examples can be freely combined to form multiple embodiments, all of which are embodiments that can be adopted and claimed in the present application. In the solution of the present application, each selected example can be arbitrarily combined with any basic example and selected example.

[0046] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A rail welding system for implementing on-line rail welding by separating a machine body, comprising a rail welding vehicle (1) and a rail welding machine (2), characterized in that: The rail welding vehicle (1) is provided with a rail welding operation supply unit, the rail welding operation supply unit is connected to the rail welding machine (2) through an extension pipeline (3), and the rail welding vehicle (1) is provided with a crane (4); It also comprises a machine body support (5), on which a rail welding machine placement position is arranged.

2. The rail welding system for welding rails on the machine body separation line according to claim 1, characterized in that: The rail welding operation supply unit comprises a hydraulic oil unit (101), a gas unit (102), a cooling water unit (103) and a power supply unit (104); the extension pipeline (3) comprises a hydraulic oil extension pipe (301), a gas extension pipe (302), a cooling water extension pipe (303) and a cable extension line (304); the hydraulic oil unit (101) is connected to the rail welding machine (2) through the hydraulic oil extension pipe (301); the gas unit (102) is connected to the rail welding machine (2) through the gas extension pipe (302); the cooling water unit (103) is connected to the rail welding machine (2) through the cooling water extension pipe (303); and the power supply unit (104) is connected to the rail welding machine (2) through the cable extension line (304).

3. The rail welding system for welding rails on the machine body separation line according to claim 2, characterized in that: The power supply unit (104), hydraulic oil unit (101), cooling water unit (103) and gas unit (102) are arranged one by one from front to back along the rail welding vehicle (1); the length of the cable extension line (304) is 15 to 19 m, the length of the hydraulic oil extension pipe (301) is 12.5 to 16.5 m, the length of the cooling water extension pipe (303) is 10 to 14 m, and the length of the gas extension pipe (302) is 6 to 14 m.

4. The rail welding system for welding rails on the machine body separation line according to claim 2 or 3, characterized in that: The gas unit (102) and the gas extension tube (302) both include four independent parts of oxygen, acetylene, wind and argon.

5. The rail welding system for welding rails on the machine body separation line according to claim 4, characterized in that: The length of the pipelines of the oxygen, acetylene and wind parts in the gas extension tube (302) is 6 to 10 meters, and the length of the pipeline of the argon part in the gas extension tube (302) is 10 to 14 meters.

6. The rail welding system for welding rails on the machine body separation line according to claim 1, characterized in that: The crane (4) is arranged at the rear of the rail welding vehicle (1).

7. The rail welding system for welding rails on the machine body separation line according to claim 1, characterized in that: The machine body support (5) is provided with an upward convex structure that crosses the track (7).

8. The rail welding system for welding rails on the machine body separation line according to claim 7, characterized in that: The machine body support (5) comprises a first longitudinal support rod (501) and a second longitudinal support rod (502) arranged on the left and right sides, a first cross rod (503) located at the front side and a second cross rod (504) located at the rear side are connected between the first longitudinal support rod (501) and the second longitudinal support rod (502), a machine body support (505) is provided on the first longitudinal support rod (501) and the second longitudinal support rod (502), and an upper convex structure that crosses the track (7) is formed on the first cross rod (503) and the second cross rod (504).

9. The rail welding system for welding rails on the machine body separation line according to claim 1, 7 or 8, characterized in that: It also includes a support assembly (8), and the track (7) and / or the roadbed (6) support the machine body bracket (5) through the support assembly (8).

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