A rail dual-frequency positive train for road-rail dual use

Abstract

The present application relates to the technical field of highway-railway dual-purpose transport equipment, in particular to a highway-railway dual-purpose steel rail double-frequency electric normalizing train, which comprises a vehicle body, a tool container and a mobile steel rail pressure-keeping double-frequency electric normalizing device are carried on the vehicle body; the vehicle body comprises a truck chassis assembly, a load-bearing frame and a hydraulic pump station are connected to the truck chassis assembly, and a set of telescopic hydraulic leg mechanisms are arranged at the front and rear ends of the truck chassis assembly respectively, and a wheel-rail running lifting mechanism is connected to the load-bearing frame; the present device is suitable for post-welding pressure-keeping double-frequency electric normalizing heat treatment operation of steel rail joints in seamless lines and urban rail transit. Furthermore, the device and the tool box are integrated and installed on a highway-railway dual-purpose vehicle, so that the working efficiency is improved, the on-and-off track operation and construction requirements of the device are facilitated, and the hoisting and carrying cost of the device can be greatly saved.

Description

Technical Field

[0001] This invention relates to the field of road-rail dual-purpose transportation equipment technology, specifically to a dual-track dual-frequency railway train. Background Technology

[0002] A road-rail dual-purpose vehicle is a special type of mobile equipment that can travel on both roads and railway lines. Its working principle is as follows: When traveling on a road, the guide rail wheelsets and load-bearing legs are retracted, maintaining a safe distance from the ground. When the vehicle reaches a level crossing or a point where the road and railway share the same line, the driver enters the track, and then the guide wheelsets extend, supporting the weight of the vehicle body, equipment, and toolbox via the rails, thus switching between road and rail travel modes. Alternatively, a separate road-rail dual-purpose vehicle lateral movement device can be used to park parallel to the track and move laterally up and down the track to switch between road and rail modes. The road-rail dual-purpose vehicle is powered by an engine and propelled forward via rubber tires on the track.

[0003] Road-rail dual-purpose vehicles can be divided into two different structural forms based on their purpose: one is a freight road-rail dual-purpose vehicle developed from a highway freight trailer, used for loading goods, and has no power unit itself. The other is an engineering road-rail dual-purpose vehicle used for various purposes such as emergency rescue, inspection, maintenance, and traction, and has its own power unit. Currently, my country's road-rail dual-purpose vehicles mainly adopt traditional frame-type or flatbed structure highway container carrier frames, and use traditional lifting devices to achieve the purpose of lifting by directly connecting the wheel-rail travel device with a single hydraulic cylinder. This method has the disadvantages of excessive self-weight of the carrier frame and unreasonable load distribution. Existing lifting devices are generally too large, making them inconvenient to install. Moreover, the hydraulic cylinder acts directly on the wheel-rail travel device, which cannot effectively prevent the lateral displacement and rotation of the wheels during lifting, increasing the wear and tear on the steel wheels and rails, thereby reducing the dynamic performance of the vehicle. Summary of the Invention

[0004] To address the aforementioned problems in the existing technology, this application proposes a dual-frequency rail-railway train for both road and rail use.

[0005] To achieve the above-mentioned technical effects, the technical solution of this application is as follows:

[0006] A dual-purpose (rail and road) dual-frequency electric normalizing train includes a vehicle body, on which a tool container and a mobile rail pressure-maintaining dual-frequency electric normalizing device are carried. The vehicle body includes a freight car chassis assembly, which is connected to a load-bearing frame and a hydraulic pump station. A set of telescopic hydraulic outrigger mechanisms is installed at each of the front and rear ends of the freight car chassis assembly. A wheel-rail running lifting mechanism is connected to the load-bearing frame. The hydraulic pump station is connected to both the telescopic hydraulic outrigger mechanism and the wheel-rail running lifting mechanism. The hydraulic pump station provides power for the lifting and lowering movement of the wheel-rail running lifting mechanism and provides power for the lifting and lateral movement of the telescopic hydraulic outrigger mechanism.

[0007] Furthermore, a movable ladder and a truck ladder are provided around the truck chassis assembly, and multiple corner locks are provided on the truck chassis.

[0008] Furthermore, the tool container is a toolbox frame and corner fittings welded together as a whole. The toolbox frame is equipped with a flip-up partition and a telescopic and foldable pulley assembly. The bottom of the flip-up partition is provided with foldable and telescopic support legs. The toolbox frame is provided with a toolbox door on the side, and a container lock is installed on the toolbox door.

[0009] Furthermore, the mobile rail pressure-holding dual-frequency electric normalizing equipment includes a normalizing container, inside which are distributed normalizing heads and lifting frame assemblies. The normalizing head and lifting frame assemblies include a slewing frame, on which a boom assembly is mounted. A boom cylinder is installed between the slewing frame and the boom assembly. A telescopic boom assembly is installed inside the boom assembly. A boom cylinder is installed between the boom assembly and the telescopic boom assembly. The telescopic boom assembly is connected to a lifting assembly via a chain. The lifting assembly is connected to the normalizing head. The slewing frame is connected to the normalizing container via a slewing bearing. The slewing bearing is connected to a hydraulic motor.

[0010] Furthermore, the normalizing head includes a head frame, on which a head lifting seat, a head lifting bracket, a mold base assembly, and a pressure-holding automatic centering clamping mechanism are installed. The normalizing transformer is fixed to the top of the mold base assembly via a transformer mounting bracket. The normalizing transformer and the lower induction coil are flexibly connected via a soft busbar. The mold base assembly is connected and fixed via a transverse hydraulic cylinder and a linear guide rail assembly.

[0011] Furthermore, the pressure-holding automatic centering clamping mechanism includes a clamping cylinder, a clamping arm, and a centering meshing gear; the clamping arm is connected to the clamping cylinder, and the clamping arm is connected to the machine head frame through a clamping arm pin. A clamping arm pin retaining ring is provided at the end of the clamping arm pin. The centering meshing gear and the clamping arm are connected together by a flat key to form a whole, and the two move synchronously in a circular motion with the clamping arm pin as the rotation center.

[0012] Furthermore, the large mold closing cylinder and the small mold closing cylinder are respectively connected to the mold base assembly, the rail waist clamping copper block and the clamping arm are connected together by screws; the rail top positioning copper block is connected to the machine head frame.

[0013] Furthermore, the mold base assembly includes a mold base mounting frame. The coil mold base is connected and fixed on the mold base mounting frame via a mold base connecting pin, a self-lubricating copper sleeve, and a mold base pin anti-rotation block. The induction coil and the insulating gasket are connected and fixed together with the coil mold base containing the air jet hole. The mold base mounting frame and the coil mold base are respectively connected to the large mold closing cylinder and the small mold closing cylinder.

[0014] Furthermore, a rail-mounted temperature sensor is fixed on the large mold-closing cylinder.

[0015] Furthermore, the mold base mounting bracket secures the rail-mounted head temperature sensor.

[0016] Furthermore, the normalizing container is a silent normalizing container. The normalizing container is divided into two parts: a front end and a rear end, which are separated by a double-layer wall and a door panel. The double-layer wall and door panel are filled with sound-absorbing and heat-insulating cotton. An electrical control cabinet is arranged on one side of the front end of the normalizing container. The normalizing head and hanger assembly are installed on the fixed plate in the middle position. The hydraulic pump station, generator set and silencer are arranged on one side of the rear end of the normalizing container. The air tank, air compressor and chiller are arranged on the other side of the rear end.

[0017] The advantages of this application are:

[0018] 1. This equipment is an automated special-purpose device that uses a modified truck body to provide driving force for the normalizing equipment. It features strong climbing ability and high operating efficiency, significantly improving the speed and reducing the cost of relocation operations. This equipment is suitable for post-weld pressure-holding dual-frequency electric normalizing heat treatment of rail joints in seamless tracks and urban rail transit. Furthermore, by integrating the equipment and toolbox onto a dual-purpose road-rail vehicle, it improves work efficiency, facilitates the loading and unloading of equipment on and off tracks, and greatly saves on equipment hoisting and transportation costs.

[0019] 2. The tool container of this application is designed and manufactured by welding steel plates and standard container corner fittings. The tool container is connected by corner locks on the load-bearing frame of the dual-purpose road and rail freight car. The tool container has a layered design and can accommodate various backup generators, grinding wheels and consumables, detachable flatbed trolleys and on-site rust removal and grinding machines for construction use.

[0020] 3. The mobile rail pressure-holding dual-frequency electric normalizing equipment of this application is used for normalizing heat treatment of rail weld joints after flash welding on site. The normalizing coil large and small mold closing cylinder realizes the automatic opening and closing function. The transformer and mold base assembly can adjust and accurately position the relative position of the weld and the coil through the transverse moving cylinder. The pressure-holding automatic centering clamping mechanism can realize the automatic centering clamping function. During normalizing, according to the temperature change, a certain force is provided to the clamping steel of the pressure-holding automatic centering clamping mechanism, so that the clamping mechanism and the frame form a rigid body connection. This provides a certain hydraulic preload to the normalized rail joint to counteract the internal temperature stress generated by the rail elongation or shortening due to temperature changes during rail heating. This ensures that the rail clamping mechanism will not move relative to the rail, achieving the purpose of pressure-holding normalizing, thereby improving the grain size (weld joint quality) of the rail normalized joint. The machine head is initially positioned by marking lines, and then automatically and precisely positioned by a transverse hydraulic cylinder. This eliminates the need for manual secondary pushing of the machine head, greatly reducing labor intensity and improving the accuracy of weld alignment. Secondly, the automatic clamping and centering mechanism has larger and stronger components such as the frame and pins. The increased size of the clamping cylinder increases the clamping force to 100KN, achieving the function of pressure holding, clamping, and normalizing. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this application.

[0022] Figure 2 This is a schematic diagram of the vehicle's main structure.

[0023] Figure 3 This is a schematic diagram of the highway operation mode of this application.

[0024] Figure 4 This is a schematic diagram of the railway operation mode in this application.

[0025] Figures 5-6 This is a diagram of the railway track condition for this application.

[0026] Figure 7 This is a schematic diagram of a tool container structure.

[0027] Figure 8 This is a schematic diagram of the overall structure of a mobile rail pressure-maintaining dual-frequency electric normalizing equipment.

[0028] Figure 9 This is a schematic diagram of the internal structure of a mobile rail pressure-maintaining dual-frequency electric normalizing equipment.

[0029] Figure 10 This is a schematic diagram of the normalizing generator head and hanger assembly.

[0030] Figures 11-12 This is a schematic diagram of the normalizing generator head structure.

[0031] Figure 13 This is a schematic diagram of the lower part of the normalizing generator head.

[0032] Figure 14 A schematic diagram of the structure after installing the head protective cover on the normalizer head.

[0033] Figures 15-16 This is a schematic diagram of the induction coil and related structures.

[0034] In the attached image:

[0035] 100 - Vehicle body, 200 - Tool container, 300 - Mobile rail pressure-maintaining dual-frequency electric normalizing equipment;

[0036] 101-Truck chassis assembly, 102-Bearing frame, 103-Wheel rail running lifting mechanism, 104-Angle lock, 105-Hydraulic pump station, 106-Mobile ladder, 107-Telescopic hydraulic outrigger mechanism, 108-Truck ladder;

[0037] 201-Corner fittings, 202-Toolbox frame, 203-Flip-over partition, 204-Folding telescopic support legs, 205-Telescopic foldable pulley assembly, 206-Toolbox door, 207-Container locks;

[0038] 4- Normalizing container, 5- Normalizing machine head and lifting frame assembly, 6- Electrical control cabinet, 7- Hydraulic pump station, 8- Generator set, 9- Silencing device, 10- Air tank, 11- Air compressor, 12- Chiller unit, 13- Normalizing machine head, 14- Lifting assembly, 15- Chain, 16- Telescopic boom assembly, 17- Boom cylinder, 18- Boom assembly, 19- Boom cylinder, 20- Slewing frame, 21- Hydraulic motor, 22- Slewing bearing, 23- Normalizing transformer, 24- Machine head frame, 25- Machine head lifting seat, 26- Machine head lifting bracket, 27- Flexible busbar, 28- Mold base assembly, 2 9-Clamping cylinder, 30-Clamping arm, 31-Clamping arm pin, 32-Clamping arm pin retaining ring, 33-Large mold closing cylinder, 34-Small mold closing cylinder, 35-Centering meshing gear, 36-Rail top positioning copper block, 37-Rail waist clamping copper block, 38-Linear guide rail assembly, 39-Transformer mounting bracket, 40-Transverse movement cylinder, 41-Rail bottom temperature sensor, 42-Head protective cover, 43-Mold base mounting bracket, 44-Rail head temperature sensor, 45-Coil mold base, 46-Mold base connecting pin, 47-Mold base pin anti-rotation block, 48-Induction coil, 49-Insulating gasket, 50-Self-lubricating copper sleeve. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0042] In the description of this application, it should be noted that the terms "upper," "vertical," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0043] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0044] like Figure 1As shown, a dual-purpose (rail and road) dual-frequency electric normalizing train includes a vehicle body 100, on which a tool container 200 and a mobile rail pressure-maintaining dual-frequency electric normalizing device 300 are carried. The vehicle body 100 includes a freight car chassis assembly 101, which is connected to a load-bearing frame 102 and a hydraulic pump station 105. A set of telescopic hydraulic outrigger mechanisms 107 is provided at each of the front and rear ends of the freight car chassis assembly 101. A wheel-rail running lifting mechanism 103 is connected to the load-bearing frame 102. The hydraulic pump station 105 is connected to the telescopic hydraulic outrigger mechanism 107 and the wheel-rail running lifting mechanism 103 respectively. The hydraulic pump station 105 provides power for the lifting and lowering movement of the wheel-rail running lifting mechanism 103 and provides power for the lifting and lateral movement of the telescopic hydraulic outrigger mechanism 107. The truck chassis assembly 101 is surrounded by a movable ladder 106 and a truck ladder 108, and the truck chassis is equipped with a plurality of corner locks 104.

[0045] Figure 1 The four corner pieces 201 of the medium tool container 200 are reliably connected and fixed to the vehicle body 100 via the four container corner locks 104 on the front side of the load-bearing frame 102. The four corner pieces 201 of the base of the mobile rail pressure-holding dual-frequency electric normalizing equipment 300 are reliably connected and fixed to the vehicle body 100 via the four container corner locks 104 on the rear side of the load-bearing frame 102. The container ladder is installed on the container of the mobile rail pressure-holding dual-frequency electric normalizing equipment 300 by screw connection. Through the above connection and installation, the entire equipment can safely run and carry out construction on highways and railway tracks in the construction area.

[0046] The wheel-rail lifting mechanism 103 includes components such as a guide frame, guide slider, lifting cylinder, bearing housing, connecting shaft, and guide steel wheels. The wheel-rail lifting mechanism 103 is mainly connected by a central connecting shaft to a pair of left and right guide steel wheels. A set of bearing housings is installed on the outer side of each steel wheel. The inner ring of the bearing in the bearing housing is press-fitted with the connecting shaft, and the outer ring of the bearing is fixed on the bearing housing. The guide slider and the piston rod of the lifting cylinder are installed on the bearing housing. The guide frame and the fixed cylinder body of the lifting cylinder are installed and connected to the load-bearing frame 102. The lifting cylinder is connected to the hydraulic pump station 105 by oil pipe joints, etc., and the hydraulic pump station 105 provides power for the lifting movement of the wheel-rail lifting mechanism 103.

[0047] The telescopic hydraulic outrigger mechanism 107 includes components such as a hydraulic outrigger mounting frame, a slider, a telescopic arm, a telescopic lateral movement cylinder, an outrigger lifting cylinder, a support pad, a safety valve, and oil pipe joints. The hydraulic outrigger mounting frame is installed and fixed on the main beam of the truck chassis assembly 101 via connectors. The slider and the telescopic lateral movement cylinder are fixedly installed inside the hydraulic outrigger mounting frame. The telescopic arm is installed in the slide rail of the hydraulic outrigger mounting frame and is connected and fixed to the telescopic arm via the piston rod at the front end of the telescopic lateral movement cylinder. The lifting cylinder, support pad, safety valve, etc. are installed on the telescopic arm. The outrigger lifting cylinder and the telescopic lateral movement cylinder are both connected to the hydraulic pump station 105 via oil pipe joints, etc. The hydraulic pump station 105 provides power for the lifting and lateral movement of the telescopic hydraulic outrigger mechanism 107.

[0048] like Figure 3 As shown, when driving on the highway, when the wheel-rail running lifting mechanism 103 is raised to the upper limit position, the front and rear rubber wheels of the vehicle body 100 are all on the ground and the wheel-rail running lifting mechanism 103 and the telescopic hydraulic outrigger mechanism 107 are completely removed from the road surface. The vehicle body 100 runs under the drive of the rear solid rubber wheel, realizing the highway operation mode.

[0049] like Figure 4 As shown, when traveling on a railway, the wheel-rail lifting mechanism 103 first lowers the wheel-rail lifting mechanisms 103 at both ends of the vehicle body 100 until the steel wheel treads contact the rails, raising the rear axle of the vehicle. The solid rubber rear wheels are pressed against the rails, and the vehicle's driving force and braking force both come from the rear solid rubber wheels. Then, the rear wheel-rail lifting mechanism 103 of the vehicle is lowered until the steel wheel treads contact the rails, raising the front axle of the vehicle to a certain height to ensure that the front rubber wheels of the vehicle are higher than the upper plane of the rails. The wheel-rail lifting mechanism 103 of the vehicle body 100 adjusts the load-bearing capacity of the rear wheels to achieve the railway operation mode.

[0050] The two sets of telescopic hydraulic outrigger mechanisms 107 installed at the front and rear ends of this application, together with the matching hydraulic pump station 105, can complete the upper and lower track operations of the equipment. Specific operating steps are as follows: Figure 5 In the above-mentioned dual-purpose (rail and road) mobile rail pressure-maintaining dual-frequency electric normalizing equipment 300, the method for raising and lowering the rail is as follows: First, extend the telescopic lateral movement cylinder and telescopic arm in the telescopic hydraulic outrigger mechanism 107 to the same side (left and right direction) by a certain stroke. After reaching the desired position, operate the outrigger lifting cylinder to lower it until it contacts the ground plane. Figure 6As shown, continue operating the outrigger lifting cylinder to slowly lift the front and rear rubber tires of the entire equipment off the top surface of the rail. Raise the wheel-rail running lifting mechanism 103 to the upper starting position. Continue operating the telescopic lateral movement cylinder and telescopic arm in the telescopic hydraulic outrigger mechanism 107 to make it continue to move to one side. Operate the outrigger lifting cylinder to slowly lower the entire equipment to the ground, so that the front and rear rubber wheels of the vehicle bear the weight of the entire equipment. Retract the outrigger lifting cylinder. Repeat the above steps several times to complete the upper and lower rail conversion operation of the equipment.

[0051] The tool container 200 is a whole formed by welding together a toolbox frame 202 and corner fittings 201. The toolbox frame 202 is equipped with a flip-up partition 203 and a telescopic and foldable pulley assembly 205. The telescopic and foldable pulley assembly 205 has telescopic and folding functions. When not in use, it can be retracted and stored inside the tool container, saving space and facilitating storage. When in use, it can be extended and rotated to the position where lifting is required, facilitating the loading and unloading of tools. The telescopic and foldable pulley assembly 205 adopts a hand-cranked ratchet reel, which is self-locking, safe, and labor-saving, allowing people to easily load and unload tools and reduce labor intensity. The flip-up partition 203 is provided with foldable and telescopic support legs 204 at the bottom. The toolbox frame 202 is provided with a toolbox door 206 on the side, and a container lock 207 is installed on the toolbox door 206.

[0052] The tool container is designed and manufactured using steel plates and standard container corner fittings. The tool container is connected by corner locks on the load-bearing frame of the dual-purpose road and rail freight car. The tool container has a layered design inside and can accommodate various backup generators, grinding wheels and consumables, detachable flatbed trolleys, and on-site rust removal and grinding machines for construction use.

[0053] Foldable telescopic outriggers are installed on the flip-up partition for easy storage and retrieval of tools. The generator and heavy objects are placed at the bottom of the toolbox, while small tools (such as flatbed carts, grinding wheels, rail saws, and grinding discs) are placed on the partition. The middle partition of the tool container can be flipped up for easy storage and retrieval of the generator. The upper layer can hold small tools and consumables. The tool cabinet is equipped with telescopic and foldable pulley assemblies at the front, back, and top for easy loading and unloading of heavy tools. It can be connected and fixed to the support frame with a special container corner lock, which is simple and reliable to disassemble.

[0054] like Figure 8 and Figure 9As shown, the mobile rail pressure-holding dual-frequency electric normalizing equipment includes a normalizing container 4. The normalizing container 4 contains a normalizing head and a lifting frame assembly 5. The normalizing head and lifting frame assembly 5 includes a slewing frame 20. A boom assembly 18 is mounted on the slewing frame 20. A boom cylinder 19 is located between the slewing frame 20 and the boom assembly 18. A telescopic boom assembly 16 is installed inside the boom assembly 18. A boom cylinder 17 is installed between the boom assembly 18 and the telescopic boom assembly 16. The telescopic boom assembly 16 is connected to a lifting assembly 14 via a chain 15. The lifting assembly 14 is connected to the normalizing head 13. The slewing frame 20 is connected to the normalizing container 4 via a slewing bearing 22. The slewing bearing 22 is connected to a hydraulic motor 21.

[0055] like Figure 10 As shown, the boom cylinder 19 is connected between the slewing frame 20 and the boom assembly 18. The overall lifting frame assembly consists of the boom assembly 18, the telescopic boom assembly 16, the boom cylinder 19, and the boom cylinder 17. The boom cylinder 19 controls the extension and retraction of the normalizing head 13, which is automatically achieved through a remote control button operation. The telescopic boom assembly 16 is installed inside the boom assembly 18, and its extension and retraction are controlled by the boom cylinder 17. The lifting assembly 14 is connected to the telescopic boom assembly 16 via a chain 15, mainly used to connect and fix the machine head and control its rotation, which helps to adjust the state of the normalizing head 13 and ensure the initial alignment of the coil and the weld. The slewing frame 20 is connected to the normalizing container 4 via a slewing bearing 22. The lifting frame is driven by a hydraulic motor 21 to achieve automatic forward and reverse rotation of the slewing bearing 22, facilitating on-site electric normalizing heat treatment of the rail joints.

[0056] The normalizing head 13 includes a head frame 24, on which a head lifting seat 25, a head lifting bracket 26, a mold base assembly 28, and a pressure-holding automatic centering clamping mechanism are mounted. A normalizing transformer 23 is fixed to the top of the mold base assembly 28 via a transformer mounting bracket 39. The normalizing transformer 23 and the lower induction coil 48 are flexibly connected via a flexible busbar 27. The mold base assembly 28 is connected and fixed via a transverse hydraulic cylinder 40 and a linear guide rail assembly 38. A head protective cover 42 is installed on the outside of the head frame 24.

[0057] The pressure-holding automatic centering and clamping mechanism includes a clamping cylinder 29, a clamping arm 30, and a centering meshing gear 35. Automatic centering and clamping are achieved through gear meshing and the extension and retraction of the clamping cylinder 29. The clamping arm 30 is connected to the clamping cylinder 29 and is connected to the machine head frame 24 through a clamping arm pin 31. A clamping arm pin retaining ring 32 is provided at the end of the clamping arm pin 31. The centering meshing gear 35 and the clamping arm 30 are connected together by a flat key to form a whole. The two move synchronously in a circle with the clamping arm pin 31 as the rotation center.

[0058] The cylinder bodies of the large mold closing cylinder 33 and the small mold closing cylinder 34 are respectively connected to the mold base mounting bracket 43 of the mold base assembly 28. The piston rods of the large mold closing cylinder 33 and the small mold closing cylinder 34 are respectively connected to the coil mold base 45 of the mold base assembly 28, thereby realizing the mold opening and closing functions. The rail waist clamping copper block 37 and the clamping arm 30 are connected together by screws. The rail top positioning copper block 36 is connected to the machine head frame 24. The above structure takes the clamping arm pin 31 as the rotation center and the rail top positioning copper block 36 as the positioning reference to perform circumferential synchronous movement, thereby clamping and locking the steel rail to be normalized.

[0059] The mold base assembly 28 includes a mold base mounting frame 43. The coil mold base 45 is connected and fixed on the mold base mounting frame 43 through a mold base connecting pin 46, a self-lubricating copper sleeve 50, and a mold base pin anti-rotation block 47. The induction coil 48 and the insulating gasket 49 are connected and fixed together with the coil mold base 45 containing the air jet hole. The mold base mounting frame 43 and the coil mold base 45 are respectively connected to the large mold closing cylinder 33 and the small mold closing cylinder 34. The cylinders provide power to drive the induction coil 48, the insulating gasket 49 and the coil mold base 45 to perform circumferential motion with the mold base connecting pin 46 as the center, thereby realizing the opening and closing function of the normalizing coil.

[0060] A rail-mounted bottom temperature sensor 41 is fixed on the large mold closing cylinder 33. A rail-mounted head temperature sensor 44 is fixed on the mold base mounting bracket 43.

[0061] Figures 11-14 The machine head frame 24 shown in the figure is equipped with components such as machine head lifting seat 25, machine head lifting bracket 26, mold base assembly 28, clamping arm 30, clamping arm pin 31, and clamping arm pin retaining ring 32; the coil can be connected to the linear guide rail assembly 38, machine head frame 24 and transverse movement cylinder 40 respectively, and the transverse movement cylinder 40 can move left and right by extension and retraction, so as to facilitate the precise alignment of the normalizing coil and the weld.

[0062] like Figures 11-16As shown, the machine head frame 24 serves as the mounting base for the normalizing machine head 13. The normalizing transformer 23 is fixed to the top of the mold base assembly 28 via the transformer mounting bracket 39. The normalizing transformer 23 and the lower induction coil 48 are softly connected via a flexible busbar 27, facilitating the opening and closing of the coil. The mold base assembly 28 is connected and fixed via a transverse hydraulic cylinder 40 and a linear guide rail assembly 38, achieving the alignment function between the weld seam and the coil. The pressure-holding automatic centering clamping mechanism includes a clamping hydraulic cylinder 29, a clamping arm 30, a clamping arm pin 31, a clamping arm pin retaining ring 32, and a centering meshing gear 35. Through gear meshing and hydraulic cylinder extension and retraction, automatic centering clamping is achieved, realizing the pressure-holding clamping function during normalizing operations. The opening and closing of the normalizing coil and the mold base 45 and the induction coil 48 are controlled by the extension and retraction of the large mold closing cylinder 33 and the small mold closing cylinder 34. The rail bottom temperature sensor 41 is fixed on the large mold closing cylinder 33, and the rail head temperature sensor 44 is fixed on the mold base mounting bracket 43. The rail temperature is detected, collected and fed back in real time, thereby controlling the frequency switching and stopping during normalizing. The coil mold base 45 adopts an integrated design with air spray cooling (the coil mold base 45 has air spray holes to ensure that the rail head or cross-section can be sprayed), which can be completed without moving the work position. The distance between the normalizing coil (48) and the rail is a fixed design, which can ensure the repeatability of the positioning accuracy when opening and closing the coil (the distance between the rail top, rail web, rail bottom and the normalizing coil (48) is a fixed size).

[0063] like Figure 9 As shown, the normalizing container 4 serves as the installation base for equipment components. The normalizing generator head and hanger assembly 5, electrical control cabinet 6, hydraulic pump station 7, generator set 8, silencer 9, air tank 10, air compressor 11, and chiller unit 12 are rationally distributed and fixed inside the normalizing container 4. Specifically, the normalizing container 4 is a silent type, consisting of a front and rear section separated by a double-layer wall and door panel. Both the double-layer wall and door panel are filled with sound-absorbing and heat-insulating cotton to isolate most of the engine noise. The electrical control cabinet 6 is located on one side of the front of the normalizing container 4, containing electrical components such as a medium-frequency power supply and capacitors. The normalizing generator head and hanger assembly 5 is mounted on a fixed plate at the raised center. The hydraulic pump station 7, generator set 8, and silencer 9 are located on one side of the rear of the normalizing container 4, while the air tank 10, air compressor 11, and chiller unit 12 are located on the other side of the rear.

[0064] The working steps of this application are as follows:

[0065] Step 1: Move the mobile dual-frequency electric normalizing equipment for rails to the location of the rail weld head that needs normalizing.

[0066] Step 2: Turn on the normalizing equipment, open the front flip door of the normalizing container 4, operate to release the normalizing head and hanger assembly 5, and lower the normalizing head 13 onto the rail to be normalized.

[0067] Step 3: Initially determine the position of the machine head and the weld seam. The automatic centering and clamping mechanism of the normalizing machine head 13 will center, fix and clamp the rail.

[0068] Step 4: The coil closing mechanism closes the coil and moves it about 40 degrees by the horizontal hydraulic cylinder to precisely adjust the relative position between the coil and the rail weld.

[0069] Step 5: The normalizing equipment is started to perform dual-frequency normalizing on the rail joint. The low frequency and high frequency are automatically switched (the phase change temperature is automatically set). The pressure holding clamping cylinder 29 is used to perform pressure holding normalizing on the rail. After the normalizing is completed, the rail is automatically cooled by air spray (no need to move the coil).

[0070] Step 6: The coil closing mechanism opens the normalizing coil.

[0071] Step 7: The machine head pressure-holding automatic centering clamping mechanism opens.

[0072] Step 8: Retract the normalizing head and hanger assembly 5 into the normalizing container 4.

[0073] When the normalizing head descends to the surface of the rail, it is initially positioned by the guide mechanisms on both sides of the head frame 24. The centering and clamping mechanism locks the rail, and the coil opening and closing mechanism closes the coil. After the normalizing coil is aligned with the weld, normalizing can begin. Normalizing and air cooling are integrated into a single design (the coil mold base 45 has air holes for air spraying onto the top surface of the rail), which can be completed without moving the workstation. Furthermore, the coil mold base 45 protects the coil from external impacts that could cause damage.

[0074] The spacing between the coil and the rail is fixed, ensuring repeatable positioning accuracy when opening and closing the coil (the spacing between the rail top, rail web, rail bottom and the coil are all relatively fixed dimensions). The entire normalizing process is controlled remotely, enabling automatic retraction and extension of the hanger and machine head, reducing the workload of workers. The normalizing operation uses pressure-holding clamping normalizing. During induction normalizing, due to the constraint of the rail-locking device, the welded joint of the rail is less likely to deform or be damaged under the temperature stress of the rail, thereby improving the quality of the weld joint.

[0075] In existing technologies, the coil clamping of the rail is manually operated, and the coil clamping alignment is judged manually. The machine head is manually pushed for alignment, resulting in high labor intensity and poor repeatability. Furthermore, the induction normalizing coil cannot be perfectly aligned with the weld center. This application addresses this by first using a machine head to perform initial positioning by marking lines, then automatically centering and clamping the rail. A transverse hydraulic cylinder 40 is then used for precise adjustment of the weld and coil positions. The manual pushing is replaced with electric control, reducing operator labor intensity and improving alignment accuracy.

[0076] In existing technologies, during induction normalizing, the lack of a tensioning and locking device for the rails makes the welded joints prone to deformation and minor damage under the temperature stress, affecting the grain size and weld quality of the rail joints. However, the pressure-holding clamping mechanism of this application maintains a constant pressure-holding force on the clamping cylinder 29 during normalizing, ensuring the normalizing operation continues. Once the air jetting stops and the temperature drops to the set value, the clamping cylinder 29 is released, ending the normalizing process.

Claims

1. A dual-track, dual-frequency railway train, characterized in that: The vehicle includes a vehicle body (100), on which a tool container (200) and a mobile rail pressure-maintaining dual-frequency electric normalizing equipment (300) are carried. The vehicle body (100) includes a freight car chassis assembly (101), which is connected to a load-bearing frame (102) and a hydraulic pump station (7). A set of telescopic hydraulic outrigger mechanisms (107) is provided at each of the front and rear ends of the freight car chassis assembly (101). A wheel-rail running lifting mechanism (103) is connected to the load-bearing frame (102). The hydraulic pump station (7) is connected to the telescopic hydraulic outrigger mechanism (107) and the wheel-rail running lifting mechanism (103) respectively. The hydraulic pump station (7) provides power for the lifting and lowering movement of the wheel-rail running lifting mechanism (103) and provides power for the lifting and lateral movement of the telescopic hydraulic outrigger mechanism (107). The normalizing head (13) includes a head frame (24), on which a head lifting seat (25), a head lifting bracket (26), a mold base assembly (28), and a pressure-holding automatic centering clamping mechanism are installed. The normalizing transformer (23) is fixed to the top of the mold base assembly (28) through a transformer mounting bracket (39). The normalizing transformer (23) and the lower induction coil (48) are softly connected by a soft busbar (27). The mold base assembly (28) is connected and fixed by a transverse hydraulic cylinder (40) and a linear guide rail assembly (38). The pressure-holding automatic centering clamping mechanism includes a clamping cylinder (29), a clamping arm (30), and a centering meshing gear (35); the clamping arm (30) is connected to the clamping cylinder (29), and the clamping arm (30) is connected to the machine head frame (24) through a clamping arm pin (31). The end of the clamping arm pin (31) is provided with a clamping arm pin retaining ring (32). The centering meshing gear (35) and the clamping arm (30) are connected together by a flat key to form a whole. The two move synchronously in a circle with the clamping arm pin (31) as the rotation center. The large mold closing cylinder (33) and the small mold closing cylinder (34) are respectively connected to the mold base assembly (28), the rail waist clamping copper block (37) and the clamping arm (30) are connected together by screws; the rail top positioning copper block (36) is connected to the machine head frame (24); The mold base assembly (28) includes a mold base mounting frame (43), and a coil mold base (45) is connected and fixed on the mold base mounting frame (43) through a mold base connecting pin (46), a self-lubricating copper sleeve (50) and a mold base pin anti-rotation block (47). The induction coil (48) and the insulating gasket (49) are connected and fixed together with the coil mold base (45) containing the air jet hole. The mold base mounting frame (43) and the coil mold base (45) are respectively connected to the large mold closing cylinder (33) and the small mold closing cylinder (34).

2. The dual-track, dual-frequency railway train according to claim 1, characterized in that: The truck chassis assembly (101) is surrounded by a movable ladder (106) and a truck ladder (108), and the truck chassis is provided with a plurality of corner locks (104).

3. A dual-track, dual-frequency railway train for both road and rail use according to claim 1, characterized in that: The tool container (200) is a whole formed by welding together a toolbox frame (202) and corner pieces (201). The toolbox frame (202) is equipped with a flip-up partition (203) and a telescopic and foldable pulley assembly (205). The bottom of the flip-up partition (203) is provided with a foldable telescopic support leg (204). The toolbox frame (202) is provided with a toolbox door (206) on the side. The toolbox door (206) is equipped with a container lock (207).

4. A dual-track, dual-frequency railway train for both road and rail use according to claim 1, characterized in that: The mobile rail pressure-maintaining dual-frequency electric normalizing equipment (300) includes a normalizing container (4), a normalizing head and a lifting frame assembly (5) are distributed inside the normalizing container (4), the normalizing head and the lifting frame assembly (5) includes a slewing frame (20), a boom assembly (18) is provided on the slewing frame (20), a boom cylinder (19) is provided between the slewing frame (20) and the boom assembly (18), a telescopic boom assembly (16) is installed inside the boom assembly (18), a boom cylinder (17) is installed between the boom assembly (18) and the telescopic boom assembly (16), the telescopic boom assembly (16) is connected to the lifting assembly (14) through a chain (15), the lifting assembly (14) is connected to the normalizing head (13), the slewing frame (20) is connected to the normalizing container (4) through a slewing bearing (22), and the slewing bearing (22) is connected to a hydraulic motor (21).

5. A dual-track, dual-frequency railway train for both road and rail use according to claim 1, characterized in that: A rail-mounted bottom temperature sensor (41) is fixed on the large mold closing cylinder (33); a rail-mounted head temperature sensor (44) is fixed on the mold base mounting bracket (43).

6. A dual-track, dual-frequency railway train for both road and rail use according to claim 4, characterized in that: The normalizing container (4) is a silent normalizing container (4). The normalizing container (4) is divided into two parts: the front end and the rear end. The two parts are separated by a double-layer wall and a door panel. The double-layer wall and the door panel are filled with sound-absorbing and heat-insulating cotton. An electrical control cabinet (6) is arranged on one side of the front end of the normalizing container (4). The normalizing head and hanger assembly (5) are installed on the fixed plate in the middle position. The hydraulic pump station (7), generator set (8) and silencer (9) are arranged on one side of the rear end of the normalizing container (4). The air tank (10), air compressor (11) and chiller (12) are arranged on the other side of the rear end.

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