Welding operation cabin of rail welding operation vehicle and rail welding operation vehicle

Abstract

The invention discloses a welding operation cabin of a steel rail welding operation vehicle and the steel rail welding operation vehicle. The welding operation cabin comprises an operation cabin body, a welding device and a crane, the operation cabin body is provided with side walls and a bottom; the welding device and the crane are arranged in the operation cabin body; a receding notch is formed between the lower portion and the bottom of the side wall, a crane for hoisting the welding device passes through the receding notch, an opening of the receding notch faces the front end of the operation cabin body, and the receding notch allows the crane to pass when the crane rotates along the horizontal plane so as to drive the welding device to move between the front end and the two sides outside the operation cabin body. The welding device is provided with a second position for moving the welding device out of the cabin body of the operation cabin through a suspension arm of the crane, and the second position comprises two sides of the steel rail welding operation vehicle so as to carry out welding operation on two sides of the rail. According to the scheme, the welding device is allowed to rotate by an angle close to or even exceeding 180 degrees along the horizontal plane, so that the welding device can more flexibly and efficiently execute steel rail welding operation in a larger range.

Description

Technical Field

[0001] This disclosure generally relates to the field of railway track engineering machinery technology. Specifically, it relates to a rail welding operation vehicle. More specifically, it relates to a rail welding operation vehicle that uses a high-power energy storage power supply device for flash welding of track lines, and particularly to a high-power new energy storage type rail flash welding operation vehicle. Background Technology

[0002] Rail transit is an important mode of modern transportation, relying on the breadth and range of its coverage. During the construction or maintenance of rail transit lines, there are often on-site operations requiring the transport of large equipment, such as rail welding, post-weld heat treatment, and rail grinding.

[0003] Taking rail welding as an example, mobile flash welding of rails is currently widely used. The welding equipment is usually housed in a work vehicle that can travel along the rail. A conventional rail welding work vehicle consists of two parts: a welding work compartment and a power supply compartment, which perform welding and power supply operations respectively. During the welding process, it is desirable to use the welding equipment from multiple angles to perform rail welding operations. Therefore, multiple walls of the compartment need to be movable to provide space for the relocation and extension of the welding equipment. The existing design of the welding work compartment's canopy (including the side walls) is designed to slide backward to the position of the power supply compartment. While this design is beneficial for expanding the working range of rail welding, it also significantly reduces the structural strength of the compartment itself, causing great inconvenience and trouble for the hoisting and relocation of the welding work compartment. At this point, how to provide space while ensuring the structural strength of the compartment itself becomes an urgent problem to be solved. In addition, when performing rail welding operations on the track, the rail welding work vehicle usually needs to be equipped with a high-power power supply device to provide power to the welding unit (including the welding equipment and its auxiliary equipment). Most existing rail welding vehicles use high-power diesel generator sets as their power supply. However, with increasingly stringent environmental regulations, the application of these generator sets is severely limited, especially during rail welding in subways and long tunnels, where issues such as high noise and pollution are significant. In high-altitude environments, they also suffer from rapid power loss and low efficiency, making it difficult to meet normal operational needs. In recent years, new energy storage batteries have been used as power supplies for flash welding machines, but these typically require charging before welding, and the batteries remain discharged during welding. When the battery power is insufficient, work must be stopped for charging, and welding can only resume once fully charged. Therefore, problems such as low energy efficiency and long charging times persist, causing inconvenience to on-site rail welding. Given these problems, it is necessary to improve existing rail welding vehicles and their corresponding welding machine power supply devices and modes. Summary of the Invention

[0004] In order to at least solve one or more of the technical problems mentioned above, this disclosure proposes a welding operation cabin for a rail welding operation vehicle and a solution for the rail welding operation vehicle in several aspects.

[0005] In a first aspect, this disclosure provides a welding work compartment for a rail welding vehicle, the welding work compartment comprising: a work compartment body, a welding device, and a crane; wherein the work compartment body has side walls and a bottom; the welding device and the crane are disposed inside the work compartment body; wherein a clearance notch is formed between the lower part of the side wall and the bottom for the crane to pass through, the opening facing the front end of the work compartment body, the clearance notch allowing the crane to pass through during rotational movement along a horizontal plane to drive the welding device to move between the front end and both sides of the work compartment body; wherein the welding device has a first position housed within the work compartment body and a second position moved out of the work compartment body by the boom of the crane, wherein the second position includes both sides of the rail welding vehicle for welding operations on both sides of the rail.

[0006] In some embodiments, the crane includes a boom that drives the welding device to move between a first position and a second position, and a rotating platform that drives the welding device to rotate along a horizontal plane.

[0007] In some embodiments, the welding work chamber further includes a first door assembly; the first door assembly has a slide rail and a sliding door that reciprocates along the slide rail; wherein the sliding door has a closed position for closing the clearance notch and an open position for exposing the clearance notch on the side wall; wherein when the sliding door is in the open position, the side wall of the chamber is partially opened to expose the clearance notch, so that the welding device can be hoisted to both sides of the rail for rail welding operations.

[0008] In some embodiments, the clearance notch is configured to have: an upper edge formed on the lower portion of the sidewall, the front end of the upper edge extending to the front end of the work cabin body; and a rear edge connecting the rear end of the upper edge and the bottom.

[0009] In some embodiments, the rear edge is configured to be perpendicular to the upper edge and / or the bottom; or the rear edge is configured to be an arc shape protruding toward the rear end of the work cabin body.

[0010] In some embodiments, the welding work chamber includes a tensioning device detachably mounted between the top and bottom of the clearance notch, such that the chamber sidewalls around the clearance notch remain taut and prevent deformation throughout the lifting and transport process.

[0011] In some embodiments, the welding work chamber includes: an installation assembly disposed at the lower part of the sidewall and the bottom, respectively, for detachably mounting the tensioning device.

[0012] In some embodiments, the mounting assembly is positioned near the front of the work cabin hull such that the tensioning device is connected to the mounting assembly at an opening near the clearance notch.

[0013] In some embodiments, the welding work compartment is configured as a container.

[0014] In a second aspect, this disclosure provides a rail welding vehicle, comprising: a welding operation compartment as described in any of the first aspects; and a power supply compartment for directly generating electrical energy to be supplied to the welding apparatus within the welding operation compartment, and / or indirectly generating and storing electrical energy to be supplied to at least the welding apparatus within the welding operation compartment.

[0015] According to the technical solution of this application, by providing a clearance notch in the lower part of the side wall of the work cabin, the welding device can be driven to rotate at an angle close to or even greater than 180° along the horizontal plane, so as to facilitate the flash welding machine to perform a wider range of rail welding operations more flexibly and efficiently. Attached Figure Description

[0016] The disclosure of this application is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this application. In the drawings, unless otherwise stated, the same reference numerals refer to the same parts. Wherein:

[0017] Figure 1 A schematic front view of an embodiment of a rail welding work compartment is shown, in which part of the internal structure and layout are shown from a perspective.

[0018] Figure 2 schematically shown Figure 1 A top-down view of the welding work chamber, showing part of the internal structure and layout from a perspective perspective.

[0019] Figure 3 Schematally shown from a non-perspective perspective Figure 1 The front view of the welding work compartment.

[0020] Figure 4schematically shown Figure 1 The left view of the welding work chamber, showing part of the internal structure and layout from a partial perspective.

[0021] Figure 5 schematically shown Figure 1 The right view of the welding work compartment.

[0022] Figure 6 schematically shown Figure 1 The second door assembly of the welding work compartment.

[0023] Figure 7 A schematic front view of an embodiment of a rail welding vehicle is shown, in which part of the internal structure and layout are shown from a perspective.

[0024] Figure 8 schematically shown Figure 7 A top-down view of the power supply compartment, showing part of the internal structure and layout from a perspective perspective.

[0025] Figure 9 Schematally shown from a non-perspective perspective Figure 7 The main view of the power supply.

[0026] Figure 10 schematically shown Figure 7 Left view of the welding work chamber.

[0027] Figure 11 schematically shown Figure 7 The right view of the welding work compartment. Detailed Implementation

[0028] The present application will now be described in detail with reference to exemplary embodiments shown in the accompanying drawings. However, it should be understood that the present application may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided herein to make the disclosure of the present application more complete and similar, and to fully convey the concept of the present application to those skilled in the art.

[0029] Furthermore, for any single technical feature described or implied in the embodiments mentioned herein, or any single technical feature shown or implied in the various figures, this application still allows for any combination or deletion of these technical features (or their equivalents) without any technical obstacle, thereby obtaining more other embodiments of this application that may not be directly mentioned herein.

[0030] For ease of description, an directional coordinate system is provided in this document. Specifically, the horizontal and vertical directions of the rail welding vehicle in its working state are used as its directional coordinate system. This leads to terms such as "top" and "bottom" used to describe the vehicle and its various components. The direction of travel of the rail welding vehicle is used as the "front" in the description, and the opposite direction as the "rear." Furthermore, the two sides of the direction of travel are used as the "left" and "right" in the description. However, it should be understood that this does not constitute an absolute limitation on the orientation of the solution in this application, but is intended to describe the positional relationships or relative relationships between the various components in the embodiment.

[0031] See Figures 1 to 11 The accompanying drawings illustrate one embodiment of a rail welding work vehicle. These drawings show the two constituent compartments of the rail welding work vehicle. Specifically, Figures 1 to 6 The welding compartment and its components of the rail welding vehicle are shown. Figures 7 to 11 The power supply compartment and its components of the rail welding vehicle are shown below, and will be described in detail with reference to the corresponding accompanying drawings.

[0032] See Figures 1 to 6 The welding work chamber generally includes a work chamber body 1-1 and a welding device 1-2 and a crane 1-3 housed within the work chamber. The work chamber body 1-1 has side walls and a bottom. A clearance notch is formed between the lower part of its side walls and its bottom to allow the crane 1-3, which is used to hoist the welding device 1-2, to pass through. This notch allows the crane 1-3 to rotate horizontally through the clearance notch, thereby driving the welding device 1-2 to move between the front end and both sides of the work chamber body 1-1.

[0033] The welding device 1-2, which is installed inside the working chamber 1-1, has a first position (i.e.,) for being housed within the working chamber 1-1. Figure 1 The location of the welding device in the work compartment), and a second location (e.g., where it is moved out of the work compartment 1-1 by the boom of a crane). Figure 2 The welding device is located in the position of the work vehicle or moved to both sides of the track to perform welding operations. For the flash welding machine 1-2, which is used as an example of a welding device, the telescopic function of the crane allows it to occupy a relatively small space when not in use, and thus the work cabin 1-1 has a relatively small capacity; while in the extended state when in use, it has a relatively wider working range.

[0034] The crane 1-3, located within the work compartment 1-1, serves as the motion mechanism for driving the welding device 1-2. Specifically, it includes a boom that drives the welding device 1-2 to move between a first position and a second position, and a mechanism that drives the welding device 1-2 to rotate horizontally (i.e., from...). Figure 2 The position of the welding device in the middle is rotated to be the same as that of the welding device in the middle. Figure 2 The welding device is located in a roughly vertical position or at a larger angle on a rotating platform.

[0035] Furthermore, the height and length of the clearance notch mentioned above allow the boom of crane 1-3 to drive the welding device 1-2 to rotate horizontally through the notch, so as to subsequently reach the designated positions on both sides of the rail for welding operations. In this arrangement, the welding device 1-2 can be driven to rotate approximately or even exceed 180° along the horizontal plane, allowing the welding device 1-2, such as a flash welder, to perform a wider range of rail welding operations more flexibly and efficiently.

[0036] The following section will continue to describe the structure and connection relationships of the various components of the welding work chamber. Furthermore, for reasons of further improving reliability, practicality, economy, or other improvements, additional components may be added, as illustrated below.

[0037] For example, as a specific implementation, the aforementioned clearance notch can be configured to have: an opening toward the front end of the work cabin 1-1; an upper edge formed at the lower part of the side wall 1-1-13, the front end of which extends to the front end of the work cabin 1-1; and a rear edge connecting the rear end of the upper edge and the bottom. The upper edge may be parallel to the bottom; and the rear edge is configured to be perpendicular to the upper edge and / or the bottom. In another example not shown, the rear edge may also be configured to form an arc protruding toward the rear end of the work cabin 1-1.

[0038] For example, a first door assembly that mates with the clearance opening can be installed on the lower part of the side wall of the work compartment. This first door assembly includes a slide rail and a sliding door 1-1-4 that reciprocates along the slide rail. The sliding door 1-1-4 has a closed position for closing the clearance opening (i.e.,...). Figure 1 The left side shown in the image), and the opening position on the side wall where the clearance notch is exposed (i.e. Figure 3(The location of the door assembly). In its open position, it partially opens the side wall of the cabin, revealing a clearance opening, allowing the welding device 1-2 to be hoisted to both sides of the track for rail welding. After the rail welding is completed on-site, the welding device 1-2 can be moved from the sides of the track to the front of the cabin and hoisted into the cabin, and the sliding door 1-1-4 of the first door assembly can be closed. The presence of the first door assembly better ensures the sealing of the work cabin when not in use, preventing dust and debris from affecting the welding device and crane, thus improving equipment reliability. It also reduces wind resistance when the rail work vehicle travels on the track, improving the safety and speed of equipment transport.

[0039] Specifically, the two slide rails can be like... Figure 1 The sliding doors 1-1-4 are positioned horizontally at the lower part of the side wall 1-1-13 and at the bottom of the work cabin 1-1. This allows the sliding doors to move back and forth controlled along the arranged tracks between the closed and open positions.

[0040] Alternatively, although not shown in the figure, it can also be located at the front and rear of side wall 1-1-13, with the rear slide rail preferably closer to the rear edge of the clearance notch. The front slide rail of side wall 1-1-13 does not need to extend downwards to protrude from the clearance notch, thus not affecting the horizontal rotation of the welding device. The sliding door 1-1-4 then moves in a controlled manner up and down between the closed and open positions along the arranged slide rails.

[0041] Based on this, when the welding work compartment 1 is lifted and moved, to prevent deformation of the upper and lower parts of the side wall with the clearance notch due to lack of support, mounting components can be installed at the top (i.e., the lower part of side wall 1-1-13) and bottom of the clearance notch, respectively. A tensioning device 1-1-8 is detachably mounted between the top and bottom of the clearance notch via this mounting component, ensuring that the side wall of the compartment around the clearance notch remains taut and prevents deformation throughout the lifting and transfer process. Furthermore, to provide better tensioning, the mounting component can be positioned near the front of the work compartment, with the tensioning device 1-1-8 positioned near the opening of the clearance notch or near the closed position of the sliding door of the first door assembly, i.e., the front end of the side wall 1-1-13 of the work compartment 1-1. One end of the tensioning device 1-1-8 is connected to the lower part of the side wall 1-1-13, and the other end is connected to the bottom of the compartment. As a specific structural example of the installation assembly, it could be an installation pin. In this case, the tensioning device 1-1-8 is correspondingly configured as a turnbuckle, which allows the two ends of the turnbuckle to be detachably installed between the lower part of the sidewall 1-1-13 and the bottom of the hull. As another specific structural example of the installation assembly, it could be a lifting eye bolt. In this case, the tensioning device 1-1-8 is correspondingly configured as a ratchet tensioner, with the two ends of the ratchet tensioner detachably installed between the lower part of the sidewall 1-1-13 and the bottom of the hull via the lifting eye bolt.

[0042] At this point, if the welding work compartment 1 is configured as a container structure for easy transfer, it can be directly lifted and moved using the corners 1-1-10 on the top of the container. In contrast, for a conventional welding work compartment with a rear-mounted canopy, since the front of the top cannot be fixed with corners, it can only be lifted from the four corners of the base frame when removing the work compartment. To prevent the lifting ropes at the four corners from squeezing the side walls of the compartment, a square frame support needs to be added below the hook. In this solution, the lower part of the side wall and the bottom are provided with a clearance notch near the front end of the work compartment for the crane to pass through during rotation. This allows the side wall and the bottom to be fixedly connected to each other at the rear end of the work compartment without the need for overall sliding, thereby improving the strength of the compartment. Since there is no need for overall sliding and the compartment has high strength, it is also beneficial to set the top corners, which makes top lifting possible. Top lifting makes the welding work compartment easier to connect and disassemble with the crane, thus making the overall lifting and handling of the welding work compartment more efficient. This improvement is crucial for large-scale rail engineering machinery that frequently requires relocation. After completing welding on a section of track, the rail welding vehicle must be moved to other track sections for further work. If there are impassable locations (e.g., tunnels), the work cabin and power cabin must be lifted off the ground, transported by truck to a designated location, reinstalled, and then welding can resume. Therefore, its lifting requirements are indispensable, and the improvements to the top-mounted system are extremely important and effective in accelerating the rail welding construction process.

[0043] In addition, it is also combined with the appendix Figures 1 to 7 Further description is provided for the other components of the welding work compartment. Besides the work compartment body 1-1, welding equipment such as flash welding machines 1-2, and cranes such as double-arm cranes 1-3, the welding work compartment 1 also includes an autotransformer cabinet 1-4, an electrical control cabinet 1-5, a welding machine pump station 1-6, a crane pump station 1-7, an industrial chiller 1-8, a window air conditioner 19, a junction box 1-10, and adjustable work lights 1-11 installed to improve lighting conditions for the rail welding unit (i.e., the rail welding vehicle, including welding equipment and its auxiliary equipment) during operation and travel in the tunnel.

[0044] The welding work compartment 1 can be formed by the work compartment base frame 1-1-1 and the compartment cover 1-1-2, or it can be configured as an integral structure (not shown). It also includes components such as a skylight 1-1-3, two sliding doors 1-1-4, louvers 1-1-5, a revolving door 1-1-6, a revolving door opening and closing device 1-1-7, lifting turnbuckles 1-1-8, a rear entrance door 1-19, and corner brackets 1-1-10. The internal space of the compartment is divided into a work compartment, a control compartment, and a power compartment by a front partition wall 1-1-11 and a rear partition wall 1-1-12, respectively. A double-arm crane 1-3 and a flash welding machine 1-2 are installed in the work compartment. The control compartment houses an autotransformer cabinet 1-4 for voltage transformation, consisting of a cabinet, autotransformer, UPS power supply, printer, and other equipment. It also contains an electrical control cabinet 1-5 for controlling the welding device 1-2. This cabinet integrates a touch-screen industrial control computer and centralized monitoring of the unit equipment, significantly saving space. Additionally, a window air conditioner 1-9 provides air conditioning. The power compartment contains welding pump stations 1-6 and 1-7 for driving the welding device 1-2 and crane 1-3, and an industrial chiller 1-8 for cooling the crane pump station 1-7 and welding device 1-2.

[0045] The work compartment 1-1 has three entrances and exits, one on the front partition wall 1-1-11 and one on the rear partition wall 1-1-12, as well as a rear entrance door 1-1-9. The second door assembly of the work compartment 1-1 is located at the end of the work compartment, and includes a hydraulic cylinder telescopic assembly 1-1-7 as a rotating door opening and closing device and a rotating door 1-1-6. When the rail flash welding operation vehicle stops, the rotating door 11-6 is first opened through the rotating door opening and closing device 11-7. The opening and closing device 11-7 consists of a hydraulic cylinder 11-7-1, a connecting rod 11-7-2, a horizontal guide rod 11-7-3, and a piston rod end 11-7-4. The piston rod end 11-7-4 of the hydraulic cylinder is designed with a guide block, which is sleeved on the guide rod. By sliding the guide block on the guide rod 11-7-3, the piston rod of the hydraulic cylinder maintains horizontal extension and retraction. Through the connecting rod 11-7-2 connected to the piston rod end 11-7-4, the force of the hydraulic cylinder 11-7-1 is transmitted to the rotating door 11-6, completing the opening and closing of the rotating door 11-6 of the cabin 11.

[0046] Furthermore, as an example of a crane, a single-arm crane or a double-arm crane can be used. For the double-arm crane 1-3 shown in the illustration, it employs both manual and remote control methods, with remote control being the primary control method and manual control as a backup emergency control. The hydraulic system uses a proportional multi-way valve control, allowing for stepless speed adjustment of each movement, with the maximum speed adjustable. Each crane movement has a self-locking device, ensuring automatic locking at any position. To ensure the double-arm crane 1-3 can rotate to the designated position, the sliding doors 1-1-4 on both sides can be pushed to the rear of the welding work compartment 1 and secured with latches during operation.

[0047] See also Figures 7 to 11 The power supply compartment 2 includes a power compartment body 2-1, a charging device 2-2, an energy storage device 2-3, an inverter system 2-4, a top-mounted water-cooled unit 2-5, a diesel generator set 2-6 with a base fuel tank, an exhaust gas purification device 2-7, a fire protection system 2-8, and an electric power charging management system 2-9 for controlling the power supplied from the external power grid and / or the generator set 2-6 to the energy storage device 2-3, etc.

[0048] The power supply compartment 2 includes a power compartment base frame 2-1, a cover 2-1-2, a skylight 2-1-3, side entrance doors 2-1-4, louvers 2-1-5, a front entrance door 2-1-6, a rear side door 2-1-7, a fire door 2-1-8, and corner brackets 2-1-9, among other components. The power compartment is internally divided into a central partition wall 2-1-10, which separates the power supply compartment into a power generation compartment and an energy storage compartment. The generator set includes a diesel generator set 2-6 with a base and fuel tank, and an exhaust gas purification device 2-7. These devices generate electricity to supply the welding equipment 1-2 and related auxiliary equipment such as the hydraulic pump station within the welding work compartment 1, and significantly reduce environmental pollution caused by exhaust gases generated during power generation. The energy storage compartment is equipped with a charger 2-2 for supplying electrical energy from the external power grid or generator set 2-6 to welding device 1-2 or energy storage device 2-3; an energy storage cabinet 2-3 for storing electrical energy generated by the external power grid or generator set 2-6; an inverter cabinet 2-4 for converting DC power to single-phase AC power or medium-frequency DC power and DC power to three-phase AC power; and a fire protection system 2-8. A charging management system 2-9 controls the switching of power supply from the external power grid and / or the generator set 2-6. Furthermore, a roof-mounted water-cooled unit 25 is installed on the top of the power compartment to provide hot or cooling water to maintain the energy storage device within a suitable temperature range.

[0049] Specifically, the power compartment 2-1 is equipped with four entrances and exits, including the two side entrances 2-14, the entrance and exit of the middle partition wall 2-1-10, and the front entrance 2-1-6, to facilitate entry and exit and to carry out equipment maintenance and operation. Inside the power compartment 2, there are three energy storage cabinets 2-3 operating in parallel. Each energy storage cabinet 2-3 can contain 5 sets of energy storage battery packs. The total storage capacity is designed to be no less than 480 kWh. For example, if the energy storage module is designed to have a capacity of 483.84 kWh and is fully utilized, after a full charge, even when used alone, the energy storage module can weld no less than 60 joints and can operate continuously for more than 15 hours.

[0050] The energy storage battery pack preferentially uses lithium-ion hybrid capacitors, which have high energy density and high power characteristics. It can meet the power requirements of short-term high current in the flash welding flash stage or upsetting stage, and is more conducive to providing matching power supply for the welding device of the rail welding operation vehicle (also known as the rail welding vehicle).

[0051] Even when there is no external power grid or the generator sets 2-6 fail to operate normally at the track site, the rail welding vehicle of this application can still be powered by the hybrid capacitor battery in the energy storage battery pack for welding. This ensures that the rail welding vehicle of this application has greater environmental adaptability and mobility, and can meet the needs of different track sites. Furthermore, the lithium-ion hybrid capacitor has a built-in battery management system, which can further simplify the circuit structure of the power supply system of the rail welding vehicle, reduce the difficulty of battery management, and improve the safety of the energy storage device of the rail welding vehicle.

[0052] The lithium-ion hybrid capacitors in the aforementioned energy storage cabinet 2-3 are temperature-regulated by a top-mounted water-cooled unit 2-5: at low temperatures, the chiller generates hot water which enters the lithium-ion hybrid capacitors to heat them, ensuring that the lithium-ion hybrid capacitors are at a suitable temperature and provide the best charging and discharging efficiency; at high temperatures, the lithium-ion hybrid capacitors are cooled to keep their temperature at around 25°C.

[0053] The rail welding vehicle described in this application uses an energy storage module with a design capacity of no less than 483.84 kWh and a small-power diesel generator set with a power of 110 kW to 150 kW for coordinated power supply in its power supply system. This achieves a very satisfactory balance in terms of welding cost, rail welding speed, and continuous working time, avoiding inefficient intermittent rail welding operations. The inverter cabinet 2-4 converts DC power into AC power through the switching on and off action of the semiconductor power switch IGBT. The power supply of the inverter cabinet 2-4 is divided into two sets of devices: a welding power supply and auxiliary equipment, including a single-phase welding inverter and a three-phase auxiliary inverter. The single-phase welding inverter is mainly used for welding, while the three-phase auxiliary inverter is mainly used for welding machine pump station 1-6, crane pump station 1-7, industrial chiller 1-8, window air conditioner 1-9, sockets, and other electrical units.

[0054] The welding inverter unit in inverter cabinet 2-4 is liquid-cooled and can be cooled by the industrial chiller 1-8 inside the work compartment 1; while the auxiliary inverter unit is air-cooled.

[0055] The function of charger 2-2 is to charge energy storage cabinet 2-3 and supply power to welding equipment and related auxiliary equipment. The power source for charging can be manually switched to external power grid or diesel generator set 2-6. Charger 2-2 is equipped with overvoltage and overcurrent protection devices and automatically stops charging after energy storage cabinet 2-3 is fully charged.

[0056] To control the operating mode of the rail welding vehicle with this arrangement in the power supply compartment 2, a corresponding control unit can also be installed. This control unit can be an internal unit of the energy storage device 2-3 or an external unit of the energy storage device 2-3, for example, integrated with the control unit of an external load (e.g., a flash welding machine). As an example, such a control unit can be installed in the electrical control cabinet 1-5 mentioned above.

[0057] The rail welding vehicle with this power supply compartment 2 can operate in three modes based on control commands issued by the control unit after analyzing the energy storage level of the energy storage device 23, the output power of the charging device 2-2, and the real-time power demand of the welding device 1-2. In the first mode, the charger 2-2 supplies power to the external load (such as the welding device) of the rail welding vehicle while simultaneously charging the energy storage device 2-3. In the second mode, both the charger 2-2 and the energy storage device 23 supply power to the external load. In the third mode, only the energy storage device 2-3 supplies power to the external load. The control unit can acquire parameters such as the power demand of the external load, the charge level of the energy storage device 2-3, and the output power of the charger 2-2. Based on these parameters, it can make a comprehensive judgment and generate control commands to switch the rail welding vehicle between the three operating modes. This enables the provision of a more stable power supply that matches the flash welding cycle. For example, when the power of the energy storage device 2-3 is higher than the preset power threshold, the control unit can generate a control command to put the work vehicle into a third working mode, at which time only the energy storage device 2-3 supplies power to the external load.

[0058] When the energy storage device 2-3's charge level is lower than the charge threshold, the diesel generator set 2-6 can be started or an external power grid can be connected to enable the charger 2-2 to output electrical energy. At this time, the control unit will switch between the first and second operating modes based on the size of the external load and the output power of the charger 2-2.

[0059] Specifically, when the external load exceeds a preset load threshold (e.g., when a large current occurs during the flashing or upsetting stage), the control unit can put the work vehicle into a second operating mode. In this mode, the charger 2-2 and the energy storage device 2-3 jointly supply power to the external load. When the external load is less than the preset load threshold and the output power of the charger 2-2 is greater than the preset threshold, the control unit can put the work vehicle into a first operating mode. In this mode, the charger 2-2 supplies power to the external load of the rail welding work vehicle while simultaneously charging the energy storage device 2-3, saving a significant amount of charging time. When the external load is less than the preset load threshold and the output power of the charger 2-2 is less than the preset threshold, the control unit can put the work vehicle into a second operating mode, where the charger 2-2 and the energy storage device 2-3 simultaneously supply power to the external load.

[0060] Based on the aforementioned multiple power supply modes, the rail welding vehicle of this application enables the energy storage device 2-3 and the external power grid or diesel generator set to work in real-time coordinated mode. This allows for a stable supply of electrical energy matching different stages of the flash welding process, while also saving charging time and effectively improving energy efficiency. It enables continuous rail welding operations without interruption, thus enhancing the endurance of the rail welding vehicle for continuous rail welding operations. It is particularly suitable for rail welding operations during emergency repairs of track lines.

[0061] This work vehicle may also include a fire suppression system 2-8, which uses heptafluoropropane as the extinguishing gas and is installed in the fire cabinet in the power compartment 2. The operating status of the fire suppression system 2-8 and the operation of the electrical control box can be viewed by opening the fire door 2-1-8 on the outside of the power compartment 2. For safety, the energy storage compartment and the power generation compartment of the power compartment 2 are each equipped with two combined fire temperature and smoke detectors.

[0062] Specifically, when using the rail welding vehicle in the aforementioned embodiment to perform welding operations, first push the sliding doors 1-1-4 on both sides to the rear of the welding operation cabin 1 and tighten them with the locks, start the inverter cabinet 2-4, close the air switch in the electrical box 1-10, start all the internal equipment and open the rotating door 1-1-6, extend the luffing cylinder of the double-arm crane 1-3, lift the flash welding machine 1-2 away from the bottom plate of the operation cabin 1-1 and extend it out of the work area, extend the telescopic cylinder of the double-arm crane 1-3, extend the flash welding machine 1-2 to the specified length, adjust the placement angle through the slewing device, and then continue to extend the luffing cylinder to lower the flash welding machine 1-2 until the flash welding machine 1-2 reaches the work position.

[0063] During the welding process, high-voltage DC power is input from the energy storage cabinet 2-3 to the inverter cabinet 2-4. The three-phase inverter unit in the inverter cabinet 2-4 converts the two DC powers into 380V three-phase AC power for use by the welding auxiliary equipment. The single-phase welding inverter unit converts the DC power into single-phase AC power of 315V and supplies power to the flash welding machine 1-2 through the autotransformer cabinet 1-4.

[0064] The rail welding vehicle in the aforementioned embodiments uses a lithium-ion hybrid capacitor as its energy storage battery, and is also equipped with a small-power diesel generator (e.g., 120KW) and / or external power grid. On the one hand, it can selectively provide the most suitable power combination based on different operating environments. On the other hand, the rail welding vehicle can switch between three different working modes during the flash welding cycle, better meeting the overall energy density and power density requirements of the power system at different stages of the flash welding cycle. This effectively improves the energy efficiency during flash welding, makes the power supply more stable, and saves the time spent on separate charging, thereby extending the continuous working time of the rail welding vehicle and improving its endurance for rail welding operations. Furthermore, the rail welding vehicle of this application has the advantages of low noise and low emissions, and can effectively adapt to special rail welding operation sites such as subways, long tunnels, and high altitudes.

[0065] The above examples primarily illustrate the welding work compartment and the rail welding work vehicle of this application. Although only some embodiments of this application have been described, those skilled in the art should understand that this application can be implemented in many other forms without departing from its spirit and scope. Therefore, the examples and embodiments shown are intended to be illustrative rather than restrictive, and various modifications and substitutions may be made without departing from the spirit and scope of this application as defined by the appended claims.

Claims

1. A welding work compartment (1) of a rail welding work vehicle, characterized in that, The welding work chamber (1) includes: a work chamber body (1-1), a welding device (1-2), and a crane (1-3); wherein, The working cabin body (1-1) has side walls (1-1-13) and a bottom; The welding device (1-2) and the crane (1-3) are located inside the working cabin (1-1); Wherein, a clearance notch is formed between the lower part of the side wall (1-1-13) and the bottom for the crane (1-3) of the lifting welding device (1-2) to pass through, with the opening facing the front end of the work cabin (1-1). The clearance notch allows the crane (1-3) to pass through when rotating along the horizontal plane, so as to drive the welding device (1-2) to move between the front end and both sides outside the work cabin (1-1). The welding device (1-2) has a first position housed within the work cabin (1-1) and a second position moved outside the work cabin (1-1) by the boom of a crane. The second position includes both sides of the rail welding vehicle for welding operations on both sides of the rail.

2. The welding work chamber (1) according to claim 1, characterized in that, The crane (1-3) includes a boom that drives the welding device (1-2) to move between a first position and a second position, and a rotating platform that drives the welding device (1-2) to rotate along a horizontal plane.

3. The welding work chamber (1) according to claim 1, characterized in that, The welding work chamber (1) further includes a first door assembly; the first door assembly has a slide rail and a sliding door (1-1-4) that reciprocates along the slide rail; wherein the sliding door (1-1-4) has a closed position for closing the clearance notch and an open position for exposing the clearance notch on the side wall (1-1-13); When the sliding door (1-1-4) is in the open position, the side wall of the cabin is partially opened to expose the clearance opening, so that the welding device (1-2) can be hoisted to both sides of the track for rail welding operations.

4. The welding work chamber (1) according to claim 1, characterized in that, The clearance notch is configured to have: The upper edge is formed on the lower part of the side wall (1-1-13), and the front end of the upper edge extends to the front end of the work cabin body (1-1); as well as The rear edge connects the rear end of the upper edge and the bottom.

5. The welding work chamber (1) according to claim 4, characterized in that, The rear edge is configured to be perpendicular to the upper edge and / or the bottom; or The rear edge is configured to be an arc shape that protrudes toward the rear end of the work cabin body (1-1).

6. The welding work chamber (1) according to claim 1, characterized in that, The welding work chamber (1) includes a tensioning device (1-1-8) which is detachably installed between the top and bottom of the clearance opening, so that the sidewalls of the chamber around the clearance opening remain taut and prevent deformation throughout the lifting and transport process.

7. The welding work chamber (1) according to claim 1, characterized in that, The welding work chamber (1) includes: an installation assembly, which is respectively disposed at the lower part of the side wall (1-1-13) and the bottom, and the tensioning device (1-1-8) is detachably installed.

8. The welding work chamber (1) according to claim 7, characterized in that, The mounting assembly is positioned near the front of the work cabin, such that the tensioning device (1-1-8) is connected to the mounting assembly at an opening near the clearance notch.

9. The welding work chamber (1) according to claim 1, characterized in that, The welding work compartment (1) is configured in the form of a container.

10. A rail welding operation vehicle, characterized in that, include: The welding work chamber (1) as described in any one of claims 1 to 9; as well as A power supply compartment (2) is used to directly generate electrical energy to supply to the welding apparatus (1-2) in the welding work compartment (1), and / or indirectly generate and store electrical energy to supply at least to the welding apparatus (1-2) in the welding work compartment (1).

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