A supercharging system of a railway mobile turnout welding rail machine

Abstract

The utility model discloses a kind of supercharging systems of railway mobile turnout welding rail machine, including main control oil circuit, supercharging oil circuit, clamping oil cylinder and supercharging component;The output end of the supercharging component is communicated with clamping oil cylinder and is set, and the main control oil circuit is communicated with the rodless cavity and the rod cavity of at least two clamping oil cylinders respectively;Clamping oil cylinder rodless cavity and the hydraulic oil circuit of rod cavity are connected in parallel and set, and the supercharging oil circuit is communicated with at least two supercharging components respectively and set, and the hydraulic oil circuit of supercharging component is connected in parallel and set;The present scheme reduces the use of hydraulic component, so as to reduce the probability of failure of hydraulic system, especially supercharging system, to improve the reliability of equipment.

Description

Technical Field

[0001] This utility model belongs to the field of rail welding technology, and specifically relates to a pressurization system for a mobile railway turnout rail welding machine. Background Technology

[0002] Currently, the pressurization systems of existing rail welding machines first reduce the system pressure to a suitable low value through a pressure reducing valve, and then use a booster or booster cylinder to increase the pressure to the high value required to clamp the rail. Furthermore, the clamping mechanisms at both ends of the rail joint to be welded each use an independent, identical hydraulic pressurization system. If a fault occurs in the pressurization circuit at one end of the rail welding machine, causing the clamping cylinder at that end to malfunction, while the hydraulic circuit at the other end is normal and the clamping cylinder functions normally, it will cause fatal bending and torsional damage to the guide shaft mechanism along the longitudinal direction of the rail, even rendering the entire machine unusable. Moreover, the two independent pressurization circuits not only make the equipment structure complex and bulky, but the increased number of hydraulic components also greatly increases the probability of malfunctions, resulting in high production and maintenance costs, low reliability, and hindering the overall trend of rail welding machines becoming smaller and more adaptable to the confined spaces of turnouts. Utility Model Content

[0003] The purpose of this utility model is to provide a pressurization system for a mobile railway turnout rail welding machine to address the above-mentioned shortcomings. This system solves the problems of existing technologies that use two independent pressurization circuits, which not only make the equipment structure complex and bulky, but also greatly increase the probability of rail welding machine failure due to the excessive number of hydraulic components. This results in high production and maintenance costs, low reliability, and is not conducive to the miniaturization of rail welding machines to adapt to the narrow space of turnouts.

[0004] This utility model is achieved through the following solution: A pressurization system for a mobile railway turnout rail welding machine includes a main control oil circuit, a pressurization oil circuit, a clamping cylinder, and a pressurization component. The output end of the pressurization component is connected to the clamping cylinder. The main control oil circuit is connected to the rodless or rod-type chambers of at least two clamping cylinders. The hydraulic oil circuits of the rodless and rod-type chambers of the at least two clamping cylinders are connected in parallel. The pressurization oil circuit is connected to at least one pressurization component. The hydraulic oil circuits of the pressurization components are connected in parallel.

[0005] Based on the above-mentioned structure of the pressurization system of a mobile railway turnout rail welding machine, it also includes a pressure reducing valve, a main oil inlet pipe and a main oil return pipe. The pressure reducing valve is installed on the main oil inlet pipe, and the oil return port of the pressure reducing valve is connected to the main oil return pipe. The oil outlet of the pressure reducing valve is connected to the main control oil circuit and the pressurization oil circuit respectively.

[0006] Based on the above-mentioned structure of the pressurization system of a railway mobile turnout rail welding machine, the main control oil circuit includes a main oil pipe, a first check valve, and a first directional valve; the first check valve is installed on the main oil pipe, the main oil pipe is connected to the first directional valve, and the return port of the first directional valve is connected to the main return oil pipe; the outlet of the first directional valve is connected to the hydraulic oil circuit of the rodless chamber of the clamping cylinder arranged in parallel, or the outlet of the first directional valve is connected to the hydraulic oil circuit of the rod chamber of the clamping cylinder arranged in parallel.

[0007] Based on the above-mentioned structure of the pressurization system of a mobile railway turnout rail welding machine, the hydraulic circuit of the rodless chamber of the clamping cylinders arranged in parallel specifically includes a rodless chamber working oil pipe and a rodless chamber parallel oil pipe. A high-pressure hydraulic lock is provided on the rodless chamber working oil pipe. The end of the rodless chamber working oil pipe away from the first reversing valve is connected to the rodless chamber of one of the clamping cylinders. The rodless chamber parallel oil pipe is connected to the rodless chamber working oil pipe. The connection position of the rodless chamber parallel oil pipe and the rodless chamber working oil pipe is located between the high-pressure hydraulic lock and the end position of the rodless chamber working oil pipe. The end of the rodless chamber parallel oil pipe is connected to the rodless chamber of other clamping cylinders.

[0008] Based on the structure of the pressurization system of the above-mentioned railway mobile turnout rail welding machine, the hydraulic oil circuit of the rod chamber of the clamping cylinder arranged in parallel specifically includes a rod chamber working oil pipe and a rod chamber parallel oil pipe; the rod chamber parallel oil pipe is connected to the rod chamber working oil pipe, and the ends of the rod chamber parallel oil pipe and the rod chamber working oil pipe are connected to the rod chambers of different clamping cylinders.

[0009] Based on the structure of the booster system of the above-mentioned railway mobile turnout rail welding machine, the booster oil circuit includes a booster main pipe, a second check valve and a second directional valve; the second check valve is installed on the booster main pipe, the oil inlet of the second directional valve is connected to the booster main pipe, the oil return port of the second directional valve is connected to the main return oil pipe, and the oil outlet of the second directional valve is connected to the hydraulic oil circuit of the booster component, or the second directional valve is connected to the control oil port of the high-pressure hydraulic lock.

[0010] Based on the structure of the pressurization system of the above-mentioned mobile railway turnout rail welding machine, the clamping cylinder is a telescopic cylinder.

[0011] Based on the structure of the pressurization system of the above-mentioned mobile railway turnout rail welding machine, the pressurization component is located inside or outside the clamping cylinder.

[0012] Based on the structure of the pressurization system of the above-mentioned mobile railway turnout rail welding machine, the high-pressure hydraulic lock is installed on the oil line connected to any clamping cylinder.

[0013] Based on the structure of the pressurization system of the above-mentioned railway mobile turnout rail welding machine, the oil pipes between the parallel clamping cylinders are electrically insulated.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: 1. This solution reduces the use of hydraulic components, which in turn reduces the probability of hydraulic system failure, especially the booster system, thereby improving equipment reliability.

[0015] 2. The equipment in this solution has a simple structure, high reliability, convenient operation, and simple maintenance, which greatly reduces the cost of equipment manufacturing and maintenance.

[0016] 3. This solution uses a main control oil circuit to control multiple parallel clamping cylinders, achieving synchronous extension and retraction of the clamping cylinders. Simultaneously, this solution also uses a booster oil circuit to control more than one parallel booster component, allowing one booster system to simultaneously boost multiple booster components, or to boost multiple clamping cylinders using a single booster component. This solution reduces the use of hydraulic components, thus reducing the probability of hydraulic system, especially booster system, failures and improving equipment reliability. Furthermore, this solution also reduces the overall lateral dimensions and weight of the rail welding machine.

[0017] 4. This solution eliminates the need for a pressure reducing valve in the pressure boosting circuit by adjusting the appropriate pressure boosting ratio of the boosting components. It replaces the previous two independent pressure boosting hydraulic circuit systems used to clamp the two ends of the rail to be welded with a single system that simultaneously controls two clamping cylinders on the moving and stationary ends of the rail. The oil pipes between the two parallel clamping cylinders are electrically insulated. This simplifies the hydraulic system and circuit block structure, making the equipment more concise, compact, easy to operate and maintain, reducing production and maintenance costs, decreasing the probability of rail welding machine failures, improving equipment reliability, and providing an effective way to further miniaturize and lighten the equipment. This effectively avoids the problem of unstable hydraulic pressure, such as fluctuations in clamping pressure, caused by the failure of the pressure reducing valve in the booster circuit. The booster circuit of the clamping cylinder of the rail welding machine is combined from two sets of hydraulic booster circuits into one, reducing the number of booster circuit blocks and the number of hydraulic components used in the booster circuit. This simplifies the equipment structure, greatly reduces production costs, effectively solves the problems of high equipment failure rate and poor reliability, and avoids the major safety accident that would cause fatal damage to the guide shaft mechanism along the longitudinal direction of the rail welding machine if the booster circuit at one end fails to operate while the clamping cylinder at the other end operates due to the failure of the booster circuit at one end. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Reference numerals in the attached diagram: 1. Main control oil circuit; 2. Booster oil circuit; 3. Clamping cylinder; 4. Booster component; 5. Pressure reducing valve; 6. Main inlet oil pipe; 7. Main return oil pipe; 11. Main oil pipe; 12. First check valve; 13. First directional valve; 14. Rodless chamber working oil pipe; 15. Rodless chamber parallel oil pipe; 16. Rod chamber working oil pipe; 17. Rod chamber parallel oil pipe; 18. High-pressure hydraulic lock; 21. Booster main pipe; 22. Second check valve; 23. Second directional valve; 31. Rodless chamber; 32. Rod chamber. Detailed Implementation

[0019] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0020] Any feature disclosed in this specification (including any appended claims and abstract) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a predetermined orientation, or be constructed and operated in a predetermined orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0023] Example 1 like Figure 1 As shown, this utility model provides a technical solution: A pressurization system for a mobile railway turnout rail welding machine includes a main control oil circuit 1, a pressurization oil circuit 2, a clamping cylinder 3, and a pressurization component 4. The output end of the pressurization component 4 is connected to the clamping cylinder 3. The main control oil circuit 1 is connected to the rodless chamber 31 and the rod chamber 32 of at least two clamping cylinders 3. The hydraulic oil circuits of the rodless chamber 31 and the rod chamber 32 of at least two clamping cylinders 3 are respectively connected in parallel. The pressurization oil circuit 2 is respectively connected to at least one pressurization component 4. The hydraulic oil circuits of the pressurization components 4 are connected in parallel.

[0024] Based on the above structure, this solution uses a main control oil circuit 1 to achieve synchronous oil supply to multiple parallel clamping cylinders 3, thus enabling synchronous extension and retraction of the clamping cylinders 3. Simultaneously, this solution also uses a booster oil circuit 2 to control the operation of multiple parallel booster components 4, allowing a single booster system to achieve synchronous boosting of multiple booster components 4. This solution reduces the use of hydraulic components, thereby reducing the probability of hydraulic system, especially booster system, failures and improving equipment reliability. Furthermore, this solution also reduces the overall lateral dimensions and weight of the rail welding machine.

[0025] When there is only one booster, the booster is connected to the rodless chamber of one of the clamping cylinders. Since the control oil circuits of the rodless chambers of each clamping cylinder are set in parallel, the booster can be used to boost the pressure of multiple clamping cylinders.

[0026] As an example, it also includes a pressure reducing valve 5, a main oil inlet pipe 6, and a main oil return pipe 7. The pressure reducing valve 5 is installed on the main oil inlet pipe 6, and the oil return port of the pressure reducing valve 5 is connected to the main oil return pipe 7. The oil outlet of the pressure reducing valve 5 is connected to the main control oil circuit 1 and the booster oil circuit 2, respectively.

[0027] Based on the above structure, the oil inlet of the pressure reducing valve 5 in this solution is connected to the oil source (pump station system); the pressure reducing valve 5 can reduce the system pressure to the hydraulic system pressure of the welding head required for welding rails.

[0028] As an example, the main control oil circuit 1 may include a main oil pipe 11, a first check valve 12, and a first directional valve 13; the first check valve 12 is disposed on the main oil pipe 11, the main oil pipe 11 is connected to the first directional valve 13, and the return port of the first directional valve 13 is connected to the main return oil pipe 7; the outlet of the first directional valve 13 is connected to the hydraulic oil circuit of the rodless chamber 31 of the clamping cylinder 3 arranged in parallel, or the outlet of the first directional valve 13 is connected to the hydraulic oil circuit of the rod chamber 32 of the clamping cylinder 3 arranged in parallel.

[0029] Based on the above structure, hydraulic oil enters the first directional valve 13 through the main oil pipe 11. By switching the first directional valve 13, synchronous oil supply to the rodless chamber 31 or the rod chamber 32 is achieved, thereby realizing the extension and retraction of the piston rod of the clamping cylinder 3 and realizing the rail clamping function. The first check valve 12 can prevent oil backflow and ensure the stability of the clamping force. The first directional valve 13 is used to quickly perform the functions of rapidly opening and releasing the rail and closing and clamping the rail when the rail welding machine clamps the rail.

[0030] As an example, the hydraulic circuit of the rodless chamber 31 of the parallel clamping cylinders 3 may specifically include a rodless chamber working oil pipe 14 and a rodless chamber parallel oil pipe 15. A high-pressure hydraulic lock 18 is provided on the rodless chamber working oil pipe 14. The end of the rodless chamber working oil pipe 14 away from the first reversing valve 13 is connected to the rodless chamber 31 of one of the clamping cylinders 3. The rodless chamber parallel oil pipe 15 is connected to the rodless chamber working oil pipe 14. The connection position between the rodless chamber parallel oil pipe 15 and the rodless chamber working oil pipe 14 is located between the high-pressure hydraulic lock 18 and the end position of the rodless chamber working oil pipe 14. The end of the first auxiliary cylinder is connected to the rodless chamber 31 of other clamping cylinders 3.

[0031] Based on the above structure, when it is necessary to clamp the rail, the valve core position of the first reversing valve 13 is switched so that the rodless chamber working oil pipe 14 supplies oil to the rodless chamber of the clamping cylinder. The oil enters the rodless chamber 31 of different clamping cylinders 3 through the rodless chamber working oil pipe 14 and the rodless chamber parallel oil pipe 15, respectively, pushing the piston rod to extend and retract outward synchronously, thereby realizing the synchronous clamping function.

[0032] As an example, the hydraulic circuit of the rod chamber 32 of the clamping cylinder 3 configured in parallel may specifically include a rod chamber working oil pipe 16 and a rod chamber parallel oil pipe 17; the rod chamber parallel oil pipe 17 is connected to the rod chamber working oil pipe 16, and the ends of the rod chamber parallel oil pipe 17 and the rod chamber working oil pipe 16 are connected to the rod chamber 32 of different clamping cylinders 3.

[0033] Based on the above structure, when it is necessary to release the rail, the valve core position of the first reversing valve 13 is switched so that the rod chamber working oil pipe 16 supplies oil to the rod chamber of the clamping cylinder. The oil enters the rod chamber 32 of different clamping cylinders 3 through the rod chamber working oil pipe 16 and the rod chamber parallel oil pipe 17, respectively, pushing the piston rod to retract inward synchronously, thereby realizing the synchronous release function.

[0034] As an example, the booster oil circuit 2 may include a booster main pipe 21, a second check valve 22, and a second directional valve 23; the second check valve 22 is disposed on the booster main pipe 21, the oil inlet of the second directional valve 23 is connected to the booster main pipe 21, the oil return port of the second directional valve 23 is connected to the main return oil pipe 7, the oil outlet of the second directional valve 23 is connected to the hydraulic oil circuit of the booster component 4, or the second directional valve 23 is connected to the control oil port of the high-pressure hydraulic lock 18.

[0035] Based on the above structure, the second check valve 22 in this solution is used to prevent the pressure of the boosting oil from dropping during upsetting, which would cause insufficient boosting and insufficient clamping force, resulting in slippage of the welding machine. The second reversing valve 23 is used to perform the two functions of boosting or unlocking the high-pressure hydraulic lock in the rodless chamber 31 of the clamping cylinder. In this solution, the boosting component 4 is used to increase the oil pressure in the rodless chamber 31 of the clamping cylinder when welding requires a large clamping force, under the lower working pressure of the hydraulic system of the welding machine head, so as to achieve the high oil pressure required by the rodless chamber 31. The high-pressure hydraulic lock 18 is used to seal the high-pressure oil in the rodless chamber 31 of the clamping cylinder during boosting to prevent high-pressure oil leakage, which would prevent the high pressure from rising and thus cause insufficient clamping force required for welding, thereby avoiding slippage during rail welding.

[0036] As an example, the clamping cylinder 3 can be a telescopic cylinder, which can shorten the distance between the front and rear hinge shafts of the cylinder when the piston rod of the clamping cylinder 3 is in the retracted state (i.e. the rail welding machine clamping mechanism is in the open state), so that the structural dimensions of the rail welding machine along the rail can be greatly reduced, making it easier to achieve miniaturization of the overall transverse dimensions of the rail welding machine, and greatly reducing the transverse shape and weight of the rail welding machine. As an example, the booster component 4 can specifically be a booster cylinder or a booster, and the booster component can be located inside or outside the clamping cylinder 3.

[0037] As an example, the high-pressure hydraulic lock 18 can be set in the oil circuit connected to any clamping cylinder 3, and the booster oil circuit 2 and the main oil circuit of the two clamping cylinders are connected in parallel, that is, a set of booster clamping hydraulic components can be used to synchronously control two or more clamping cylinders 3.

[0038] This solution eliminates the need for a pressure reducing valve in the pressure boosting circuit by adjusting the appropriate pressure ratio of the boosting component 4. The previous two independent boosting hydraulic circuits 2 systems used to clamp the two ends of the rail to be welded are replaced with a single boosting hydraulic circuit 2 system, simultaneously controlling two clamping cylinders at the moving and stationary ends of the rail welder in parallel. The oil pipes between the two parallel clamping cylinders 3 are electrically insulated. This simplifies the hydraulic circuit system and the hydraulic circuit block structure, making the equipment structure more concise, compact, easy to operate and maintain, reducing production and maintenance costs, decreasing the probability of rail welding machine failures, improving equipment reliability, and providing an effective way to further miniaturize and lighten the equipment. This effectively avoids the problem of unstable oil pressure caused by pressure fluctuations and sudden changes in pressure due to the failure of the pressure reducing valve in the booster circuit. The booster circuit of the clamping cylinder 3 of the rail welding machine is combined from two sets of hydraulic booster circuits into one, reducing the number of booster circuit blocks and the number of hydraulic components used in the booster circuit. This simplifies the equipment structure, greatly reduces production costs, effectively solves the problems of high equipment failure rate and poor reliability, and avoids the major safety accident that would cause fatal damage to the guide shaft of the entire rail welding machine along the longitudinal direction of the rail if the booster circuit at one end fails to operate while the clamping cylinder 3 at the other end operates due to the failure of the booster circuit at one end.

[0039] This solution employs a pressurization system for a mobile railway turnout rail welding machine, as described above. The system includes a clamping cylinder 3, a pressurization component 4, and a high-pressure hydraulic lock 18. When pressurized oil enters the rod chamber 32 of the clamping cylinder via the first reversing valve 13, the piston retracts, releasing the clamped rail. When pressurized oil enters the rodless chamber 31 of the clamping cylinder via the first reversing valve 13, the piston extends, clamping the rail. When pressurization is required, the second reversing valve 23 is activated, reversing the pressurized oil flow from the unlocked state of the high-pressure hydraulic lock 18 to the pressurization state, pressurizing the rodless chamber 31 of the clamping cylinder. Simultaneously, the high-pressure hydraulic lock 18 seals the main oil port of the rodless chamber 31, allowing the oil pressure in the rodless chamber 31 to rise to the pressure value required for rail welding. This completes the rail release, clamping, and pressurization functions of the rail welding machine. This invention simplifies the hydraulic system and avoids the technical problem of frequent malfunctions in the pressurization system due to excessive hydraulic components. It also simplifies the structure of the rail welding machine, making the equipment simple, reliable, easy to operate and maintain, and greatly reducing production and maintenance costs.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pressurization system for a mobile railway turnout rail welding machine, characterized in that, It includes a main control oil circuit (1), a booster oil circuit (2), a clamping cylinder (3), and a booster component (4); the output end of the booster component (4) is connected to the clamping cylinder (3), and the main control oil circuit (1) is connected to the rodless chamber (31) or rod chamber (32) of at least two clamping cylinders (3); the hydraulic oil circuits of the rodless chamber (31) and rod chamber (32) of at least two clamping cylinders (3) are respectively connected in parallel, the booster oil circuit (2) is respectively connected to at least one booster component (4), and the hydraulic oil circuits between the booster components (4) are connected in parallel.

2. The pressurization system of the railway mobile turnout rail welding machine according to claim 1, characterized in that: It also includes a pressure reducing valve (5), a main oil inlet pipe (6) and a main oil return pipe (7). The pressure reducing valve (5) is installed on the main oil inlet pipe (6), and the oil return port of the pressure reducing valve (5) is connected to the main oil return pipe (7). The oil outlet of the pressure reducing valve (5) is connected to the main control oil circuit (1) and the booster oil circuit (2) respectively.

3. The pressurization system of a mobile railway turnout rail welding machine according to claim 2, characterized in that: The main control oil circuit (1) includes a main oil pipe (11), a first check valve (12) and a first directional valve (13); the first check valve (12) is installed on the main oil pipe (11), the main oil pipe (11) and the first directional valve (13) are connected through the first check valve (12), and the return port of the first directional valve (13) is connected to the main return oil pipe (7); the outlet of the first directional valve (13) is connected to the hydraulic oil circuit of the rodless chamber (31) of the clamping cylinder (3) arranged in parallel, or the outlet of the first directional valve (13) is connected to the hydraulic oil circuit of the rod chamber (32) of the clamping cylinder (3) arranged in parallel.

4. The pressurization system of a mobile railway turnout rail welding machine according to claim 1, characterized in that: The hydraulic circuit of the rodless chamber (31) of the clamping cylinder (3) set in parallel includes a rodless chamber working oil pipe (14) and a rodless chamber parallel oil pipe (15). A high-pressure hydraulic lock (18) is provided on the rodless chamber working oil pipe (14). The end of the rodless chamber working oil pipe (14) away from the first reversing valve (13) is connected to the rodless chamber (31) of one of the clamping cylinders (3). The rodless chamber parallel oil pipe (15) is connected to the rodless chamber working oil pipe (14). The connection position of the rodless chamber parallel oil pipe (15) and the rodless chamber working oil pipe (14) is located between the high-pressure hydraulic lock (18) and the end position of the rodless chamber working oil pipe (14). The end of the rodless chamber parallel oil pipe (15) is connected to the rodless chamber (31) of other clamping cylinders (3).

5. The pressurization system of a mobile railway turnout rail welding machine according to claim 1, characterized in that: The hydraulic circuit of the rod chamber (32) of the clamping cylinder (3) set in parallel includes a rod chamber working oil pipe (16) and a rod chamber parallel oil pipe (17); the rod chamber parallel oil pipe (17) is connected to the rod chamber working oil pipe (16), and the ends of the rod chamber parallel oil pipe (17) and the rod chamber working oil pipe (16) are connected to the rod chamber (32) of different clamping cylinders (3).

6. The pressurization system of a mobile railway turnout rail welding machine according to claim 1, characterized in that: The booster oil circuit (2) includes a booster main pipe (21), a second check valve (22), and a second directional valve (23). The second check valve (22) is installed on the booster main pipe (21). The inlet of the second directional valve (23) is connected to the booster main pipe (21). The return port of the second directional valve (23) is connected to the main return pipe (7). The outlet of the second directional valve (23) is connected to the hydraulic oil circuit of the booster component (4). Alternatively, the second directional valve (23) is connected to the control port of the high-pressure hydraulic lock (18).

7. The pressurization system of a mobile railway turnout rail welding machine according to any one of claims 1 to 6, characterized in that: The clamping cylinder (3) is a telescopic cylinder.

8. The pressurization system of a mobile railway turnout rail welding machine according to any one of claims 1 to 6, characterized in that: The pressurizing component (4) is located inside or outside the clamping cylinder (3).

9. The pressurization system of a mobile railway turnout rail welding machine according to claim 4, characterized in that: The high-pressure hydraulic lock (18) is installed on the oil line connected to any clamping cylinder (3).

10. The pressurization system of a mobile railway turnout rail welding machine according to any one of claims 1 to 6, characterized in that: The oil pipes between the parallel clamping cylinders (3) are electrically insulated.

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