A roller sleeve container type mobile surfacing station and its operation method

Abstract

The application discloses a kind of roller sleeve container type mobile surfacing workstations and operating methods, including container body, the inside of container body is provided with first function area, second function area and third function area;First function area includes welding machine, welding wire barrel, dust collection device and heating insulation device;Second function area includes welding tooling, chuck clamp, auxiliary transmission device, welding gun movement device and welding mechanism;Chuck clamp, auxiliary transmission device and welding gun movement device are set on welding tooling;Welding mechanism is set on welding gun movement device, and welding gun in welding mechanism is connected by cable with welding machine;Welding gun in welding mechanism is connected with welding wire in welding wire barrel.The application can complete the welding process of roller sleeve surfacing once clamping, greatly improve production efficiency, surfacing quality is stable and controllable, can save on-site construction time, and can reduce the number of operating personnel, reduce the equipment maintenance cost of mill user.

Description

Technical Field

[0001] This invention relates to the field of mobile surfacing equipment technology, specifically a vertical mill roller sleeve container-type mobile surfacing workstation and its operation method. Background Technology

[0002] my country's annual cement production ranks first in the world. The cement production process involves roasting raw meal to produce clinker, which is then crushed to produce cement. Blast furnace slag is widely used as a blending material in cement production. The crushing of raw meal and slag is accomplished by raw meal vertical mills and slag vertical mills. Depending on the type of material and the required production capacity, there are various types of vertical mills. During use, the grinding rollers and wear-resistant liners of vertical mills are subjected to various forces, including material reaction forces, frictional resistance between the material and the grinding roller liner, material penetration angle causing shear stress on the grinding rollers, hydraulic system stress on the grinding rollers, and compressive stress on the vertical mill itself. The combined effects of these forces all act on the effective grinding zone of the vertical mill's grinding rollers. The material is crushed and ground between the grinding surfaces of the rollers and liners, and the grinding surfaces are continuously worn down, gradually reducing the effective grinding area. This causes the grinding efficiency of the vertical mill to decline continuously, while power consumption increases accordingly. If the grinding efficiency decreases by 10%, the annual power loss can reach millions of yuan. Furthermore, uneven wear of the grinding surfaces can lead to impacts and collisions between the grinding rollers and liners, potentially causing cracks or even breakage of the rollers and liners, resulting in machine damage and causing the vertical mill to automatically shut down due to excessive vibration, thus interrupting cement production. Therefore, it is particularly important to perform necessary welding repairs on the roller sleeve surfaces that have worn to a certain extent.

[0003] Wear of roller sleeves in vertical mills has always been a problem shared by all types of vertical mills. The existing solutions are only replacement or welding repair. Traditional welding repair methods include the following:

[0004] 1. Online Repair: "Online" refers to the direct welding repair of worn roller sleeves using online welding equipment. Online welding repair eliminates the need to disassemble the roller sleeve, saving time and costs associated with disassembly, assembly, and transportation. However, it requires transporting the welding equipment to the mill site, hoisting it onto the mill platform, and then connecting and debugging it, all of which consume significant manpower and time. Since the roller sleeve itself lacks a rotation drive, traditional online repair relies on the grinding disc's drive system to rotate the roller sleeve. This method is not only energy-intensive but also unstable, affecting the welding quality. Furthermore, during online welding, operators need to continuously clean the welding slag from the roller sleeve. However, the mill's internal space is confined, and the lack of necessary dust collection devices at the repair site means that harmful elements from the welding wire can be released with the fumes, seriously impacting the health of the operators.

[0005] 2. Offline Repair: "Offline" refers to return-to-factory repair, which involves disassembling the worn roller sleeve and transporting it to the welding workshop for welding repair on specialized equipment. After repair, it is then transported back to the mill site for installation. Although the workshop's welding equipment is advanced and the welding quality is stable and controllable, return-to-factory repair is greatly constrained by the round-trip transportation cycle of the roller sleeve, and the replacement and disassembly procedures are complex, time-consuming, and costly.

[0006] Therefore, both online and offline welding will delay production and affect the production schedule. For a shut-down mill, timely resumption of operation is essential to maximize its value. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a containerized mobile surfacing welding workstation for vertical mill roller sleeves and its operation method, which addresses the shortcomings of the prior art. The containerized mobile surfacing welding workstation for vertical mill roller sleeves and its operation method enable the roller sleeve to be surfacing welded in a single clamping, which greatly improves production efficiency, ensures stable and controllable surfacing quality, saves on-site construction time in practical applications, reduces the number of operators, and ultimately reduces the equipment maintenance costs for mill users.

[0008] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows:

[0009] A containerized mobile welding workstation for vertical mill roller sleeves includes a container body, the interior of which is provided with a first functional area, a second functional area and a third functional area, and the container body is provided with a door.

[0010] The first functional area includes a welding machine, a welding wire hopper, a dust collection device, and a heating and insulation device;

[0011] The second functional area includes welding fixtures, chuck clamps, auxiliary transmission devices, welding torch movement devices, and welding mechanisms. The welding fixtures are placed inside the container, and the chuck clamps, auxiliary transmission devices, and welding torch movement devices are all mounted on the welding fixtures. The chuck clamps are used to clamp the roller sleeves, and the auxiliary transmission devices are used to drive the roller sleeves to rotate via the chuck clamps. The welding mechanism is mounted on the welding torch movement device, which is used to drive the welding mechanism to move. The welding torch in the welding mechanism is connected to the welding machine via a cable. The welding torch in the welding mechanism is connected to the welding wire in the welding wire hopper.

[0012] The heating and heat preservation device is used to heat the roller sleeve, and the suction hood on the dust collection device is located near the welding torch.

[0013] The third functional area includes a power distribution section and a control section. The power distribution section is used to provide power to the actuators inside the container body, and the control section is used to control the operation of the actuators inside the container body.

[0014] As a further improved technical solution of the present invention, the container body is connected by partition wall one and partition wall two. The first functional area, the second functional area and the third functional area are arranged from left to right inside the container body. The first functional area and the second functional area are separated by partition wall one, and the second functional area and the third functional area are separated by partition wall two.

[0015] The partition wall 1 is equipped with a pipe opening and a cable connection port; the dust collection device is equipped with a suction arm, which passes through the pipe opening on the partition wall 1 and is fixedly connected to the suction hood; the welding machine's cable is connected to the welding gun through the cable connection port on the partition wall 1 and the cable is connected to the welding gun; the partition wall 2 has a single door on one side and a glass window on the other side.

[0016] As a further improvement of the present invention, the left end face of the container body is provided with a double door, which is located on the left side of the first functional area; the front side of the container body is provided with a double door and a single door, which are located on the front side of the second functional area and the single door is located on the front side of the third functional area; the front side of the container body is provided with multiple heat dissipation vents, which are located on the front side of the first and third functional areas respectively; the bottom of the rear side of the container body is provided with an air inlet; the top of the rear side and the top of the front side of the container body are respectively provided with a top-hung window and an exhaust fan, which are arranged at intervals; the right end face of the container body is provided with a power interface, which is connected to the power distribution part of the third functional area; and the interior of the container body is also provided with lighting.

[0017] As a further improved technical solution of the present invention, a steel frame is placed in the first functional area, the welding machine is placed on the lower layer of the steel frame, the heating and heat preservation device includes a temperature control box and a heater, the temperature control box and the heater are connected, the temperature control box is placed on the upper layer of the steel frame, and the heater is placed in a cabinet on the side wall of the second functional area.

[0018] As a further improved technical solution of the present invention, the welding fixture includes a double-column welding frame, a platform, a bearing seat 1, and a main shaft; the platform is fixed to the double-column welding frame as a whole, a steel ladder is provided on one side of the platform, the bottoms of the two bearing seats 1 are respectively connected to the two ends of the double-column welding frame, the two ends of the main shaft are respectively rotatably connected to the bearing seats 1 through the bearing 1, a flange 1 is fixedly connected to the middle of the main shaft, the flange 1 is connected to the chuck clamp, the transmission end of the main shaft is connected to a short pipe, one end of the short pipe is connected to a flange 2, and the flange 2 is connected to an auxiliary transmission device.

[0019] As a further improvement of the present invention, the chuck clamp includes a lead screw and slider device, a base plate, a connector and a chuck head;

[0020] The lead screw and slider device includes a lead screw, a lead screw nut, a second bearing seat, a second bearing, a slider, a connecting plate, a first guide rail, a handwheel, and a dust cover. The lead screw nut is threadedly connected to the lead screw. The second bearing seat is connected to both ends of the first guide rail. Both ends of the lead screw are rotatably connected to the second bearing seat via the second bearing. The tail of the slider is connected to the lead screw nut via the connecting plate. The slider and the first guide rail are slidably connected by a tongue and groove fit. The slider has a scale on its side. A clamp is connected to the top of the slider and is used to hold the inner ring of the roller sleeve. The handwheel is connected to the end of the lead screw. The dust cover is connected to the first guide rail.

[0021] There are multiple sets of lead screw and slider devices. The guide rails inside the lead screw and slider device are connected to the base plate through connectors, and the base plate is connected to the flange.

[0022] As a further improved technical solution of the present invention, the auxiliary transmission device includes a connecting frame, a transition beam, a rotating shaft, a large gear ring, a small gear, a protective cover, a conductive device, a proximity switch, a motor reducer, and a motor base; the connecting frame adopts a six-fork arm structure, the large gear ring is connected to the six-fork arm of the connecting frame, and one side of the connecting frame is connected to flange two; one end of the rotating shaft is connected to the connecting frame, the rotating shaft is rotatably connected inside the transition beam, and the end of the rotating shaft is rotatably connected to a conductive device, which is connected to the welding machine grounding cable; one end of the transition beam is fixedly connected to the double-column welding frame, the motor base is fixedly connected to the transition beam, the motor reducer is fixedly connected to the motor base, the output end of the motor reducer is connected to a small gear, the small gear meshes with the large gear ring, the proximity switch is set on the transition beam, and the connecting frame is connected to a bolt for recording the number of rotations; the protective cover is set around the large gear ring, and the protective cover is fixedly connected to the double-column welding frame.

[0023] As a further improved technical solution of the present invention, the welding torch movement device comprises an X-shaped traveling beam, a Y-shaped traveling vertical beam, a beam support, a support rotation shaft, a sliding plate, a traveling drive device, a cable holder, and a welding torch support. The beam support has a left column and a right column fixedly connected to its two ends, and each column is equipped with a second guide rail. The bottom of the left column is rotatably connected to the double-column welding frame via the support rotation shaft, and the bottom of the right column is detachably connected to the double-column welding frame. The sliding plate is slidably connected to the second guide rail, which has multiple limiting holes for limiting the sliding plate, and limiting bolts are connected within these holes. The two ends of the X-shaped traveling beam are connected to the sliding plate, and a traveling drive device is installed on the X-shaped traveling beam. The traveling drive device drives itself to move on the X-shaped traveling beam. The Y-shaped traveling vertical beam is mounted on the traveling drive device, which also drives the Y-shaped traveling vertical beam to move. The cable holder is rotatably connected to the top of the traveling drive device. The welding torch support is connected to the Y-shaped traveling vertical beam and to the welding mechanism.

[0024] The welding torch support includes a connecting seat and a welding torch angle adjuster. The connecting seat is connected to the Y-shaped vertical beam. The welding torch angle adjuster includes two fixed rods, one pull rod, and one connecting rod. The two fixed rods are connected side by side to the connecting seat. The pull rod is connected to the two fixed rods through a cross-shaped nut. The connecting rod is connected to the pull rod through a cross-shaped nut. The flange at one end of the connecting rod is connected to the welding mechanism. The fixed rods, pull rod, and connecting rod are all covered with an insulating sleeve.

[0025] As a further improved technical solution of the present invention, the welding mechanism includes a fixed seat, a welding torch, a wire feeding device and a wire straightening device; the fixed seat is connected to the connecting rod in the welding torch bracket, the wire feeding device is connected to the fixed seat, the wire straightening device is connected to the top of the wire feeding device, the welding torch head is connected to the bottom of the wire feeding device, and the top of the wire straightening device is connected to a wire guide tube.

[0026] The wire straightening device includes multiple wire straightening wheels and a wire straightening bracket. A wire guide tube is connected to the top of the wire straightening bracket. The multiple wire straightening wheels are rotatably connected to the wire straightening bracket. The welding wire in the welding wire hopper passes through the wire guide tube and enters the wire straightening device between the wire straightening wheels for straightening. The straightened welding wire then enters the wire feeding device.

[0027] The wire feeding device includes a wire feeding bracket, a wire feeding motor, a wire feeding wheel, and a wire feeding wheel clamping mechanism. The wire feeding bracket is connected to the wire feeding bracket, the wire feeding motor is connected to the wire feeding bracket, the output end of the wire feeding motor is connected to the wire feeding wheel, the welding wire is located in the wire feeding groove of the wire feeding wheel, and the wire feeding bracket is provided with a wire feeding wheel clamping mechanism for clamping the welding wire into the wire feeding groove of the wire feeding wheel; the welding torch head is connected to the wire feeding bracket.

[0028] Both the wire alignment bracket and the wire feeding bracket are equipped with wire guide holes. The welding wire enters the welding gun through the wire guide holes of the wire alignment bracket and the wire feeding bracket.

[0029] As a further improvement of the present invention, the welding machine is equipped with a circulating cooling water tank, the welding torch is a water-cooled welding torch, and the torch barrel is provided with a water inlet pipe interface and a water outlet pipe interface for connecting to the circulating cooling water tank.

[0030] As a further improvement of the present invention, the second functional area also includes a cantilever lifting device and a slag removal disc;

[0031] The cantilever lifting device includes a support column, a lifting device horizontal arm, a monorail trolley, and a hand-operated hoist. The bottom of the support column is connected to the bottom of the container body, the lifting device horizontal arm is rotatably connected to the support column, a trolley track is provided on the lifting device horizontal arm, the monorail trolley is slidably connected to the trolley track, and a hand-operated hoist is connected to the monorail trolley.

[0032] The slag removal disc is placed below the spindle of the welding fixture.

[0033] As a further improved technical solution of the present invention, the power distribution part of the third functional area includes a power distribution box, which is electrically connected to the welding machine, dust collection device, heating and heat preservation device, proximity switch and motor reducer in the auxiliary transmission device, drive motor in the walking drive device, wire feeding motor in the welding mechanism, exhaust fan and lighting lamp, and provides them with power.

[0034] The control unit includes a central control panel cabinet, a welding machine control cabinet, and a wireless handheld remote control. The welding machine control cabinet is electrically connected to the welding machine and is used to control the operation of the welding machine. The central control panel cabinet is electrically connected to the proximity switches and motor reducers in the dust collection device, heating and insulation device, auxiliary transmission device, drive motor in the travel drive device, wire feeding motor in the welding mechanism, exhaust fan, and lighting, and is used to control the operation of the dust collection device, heating and insulation device, motor reducer, drive motor in the travel drive device, wire feeding motor in the welding mechanism, exhaust fan, and lighting. The wireless handheld remote control is wirelessly connected to the central control panel cabinet and is used to control the operation of the dust collection device, heating and insulation device, motor reducer, drive motor in the travel drive device, wire feeding motor in the welding mechanism, exhaust fan, and lighting through the central control panel cabinet.

[0035] The floor of the third functional area is covered with rubber-insulated carpet, and the third functional area also includes desks, office chairs, storage cabinets, air conditioners, and emergency lighting devices.

[0036] To achieve the above-mentioned technical objectives, another technical solution adopted by the present invention is as follows:

[0037] An operating method for a containerized mobile welding workstation for vertical mill roller sleeves includes the following steps:

[0038] 1. Transport the container to the mill site, open the double door on the front of the second functional area, rotate the horizontal arm of the lifting device on the cantilever lifting device, rotate the crossbeam bracket inside the welding torch motion device, and lift the chuck clamp and main shaft to the outside of the container through the cantilever lifting device.

[0039] 2. Install the chuck fixture on the inner ring of the roller sleeve. Rotate the handwheels to press the chuck head against the inner ring rib of the roller sleeve. Observe the scale on the side of the slider to ensure that the scales of the multiple sets of lead screw slider devices are consistent and to ensure that the chuck fixture is concentric with the roller sleeve.

[0040] 3. Install the main shaft. Connect the flange one in the middle of the main shaft to the bottom plate in the chuck clamp. Use a cantilever lifting device to lift the main shaft into the container body. Install both ends of the main shaft on the bearing seats two at both ends of the double column welding frame, so that the main shaft is rotatably connected to the bearing seats two through the bearing seats two.

[0041] 4. Install the auxiliary transmission device and mount it on flange two at the drive end of the main shaft;

[0042] 5. Alignment: By rotating the roller sleeve and using a dial indicator, the position of the roller sleeve is finely adjusted using the screw and slider device on the chuck fixture to ensure that the concentricity between the roller sleeve and the main shaft is <1mm.

[0043] 6. Start the welding torch movement device, adjust the position of the walking drive device, and adjust the height of the welding torch so that the torch head is aligned with the surface to be welded on the roller sleeve.

[0044] 7. Preheating of the roller sleeve before welding: The heater of the heating and heat preservation device is a ceramic electric heating belt. The ceramic electric heating belt of the heating and heat preservation device is wrapped around the outer surface of the roller sleeve. The temperature control box is started, and the temperature control box controls the ceramic electric heating belt to continuously heat the roller sleeve.

[0045] 8. Turn on the welding machine power, adjust the welding wire position, and perform the surfacing operation.

[0046] The beneficial effects of this invention are as follows:

[0047] This invention comprises three functional zones forming the entire automated welding workstation system. The internal equipment layout is well-organized, with high space utilization, mature technology, advanced configuration, comprehensive functions, simple operation, and a high degree of automation, enabling collaborative work among all components. Furthermore, the container dimensions can be customized according to the roller sleeve specifications, enhancing its applicability. The entire roller sleeve welding construction area is integrated into the second functional zone, with a compact arrangement of mechanisms and high space utilization.

[0048] The containerized welding workstation of this invention has a clear functional zoning design, and each zone can be customized according to different needs. It has a high degree of automation, greatly reduces the labor intensity of operators, optimizes the working environment, achieves precise and error-free production process control, and greatly improves the quality and efficiency of roller sleeve welding.

[0049] When on-site maintenance is required, the container only needs to be shipped to the site in advance. The welding process of the roller sleeve can be completed in one clamping, with stable welding performance, safe welding process, significantly improved production efficiency, and timely restoration of operation; the welding quality is stable and reliable. In practical applications, it can save on-site construction time, reduce the number of workers, and ultimately reduce the equipment maintenance costs for mill users.

[0050] The containerized mobile welding workstation for vertical mill roller sleeves provided by this invention is lighter and more reliable than traditional equipment, and all these components are integrated into a single container, making container handling and on-site preparation simple.

[0051] The present invention provides a dust collection device inside the container, which can absorb the fumes and harmful gases generated during welding, and also has an automatic dust removal function. Attached Figure Description

[0052] Figure 1 It is the external axis view of the workstation. Figure 1 .

[0053] Figure 2 This is an axonometric view of the internal functional areas of the workstation. Figure 1 .

[0054] Figure 3 This is an axonometric view of the internal functional areas of the workstation. Figure 2 .

[0055] Figure 4 This is a top view of the internal functional areas of the workstation.

[0056] Figure 5 This is a schematic diagram of the equipment structure within the second functional area. Figure 1 .

[0057] Figure 6 This is a schematic diagram of the equipment structure within the second functional area. Figure 2 .

[0058] Figure 7 It is the external axis view of the workstation. Figure 2 . Detailed Implementation

[0059] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings:

[0060] The invention will be further described below with reference to the accompanying drawings:

[0061] This embodiment provides a container-type mobile welding workstation for vertical mill roller sleeves, including a container body.

[0062] See Figure 1 and Figure 7 The container has three doors: a double door 1 at the end of the container as an equipment passage, a double door 2 on the side of the container as a construction passage, and a single door 3 on the side of the container as an escape passage. An air inlet 6 is located at the bottom of the rear wall of the container for ventilation of the construction area. Multiple heat dissipation vents 4 and 5 are located on the front wall of the container for equipment cooling. In addition, a power interface 9 is located at the end of the container for powering the electrical equipment inside the container.

[0063] See Figure 2 , Figure 3 and Figure 4The container includes a first functional area 100, a second functional area 200, and a third functional area 300. These three functional areas are located inside the container and arranged sequentially. The first functional area 100 and the second functional area 200 are separated by an internal partition wall 10, which has pipe openings and cable connection ports. The second functional area 200 and the third functional area 300 are separated by an internal partition wall 11. One side of the partition wall 11 has a single door 13 serving as an access passage inside the container, and the other side has a glass window 12 for operator observation. The glass window is made of tempered double-layered laminated glass. The partition walls are made of fireproof rock wool insulation board to block the high temperatures generated during welding.

[0064] The first functional area 100 is the "equipment area". Within the first functional area 100: a double door 1 is provided at the end of the container body, which is the "auxiliary passage" for equipment; louvers are provided on both the front and rear side walls of the container body, with one louver serving as the heat dissipation vent for the welding machine and the other louver serving as the air inlet (air inlet 6) for the dust collection device 101; a lighting lamp 14 is provided in the middle of the container body for indoor lighting; top-hung windows 7 and exhaust fans 8 are provided on both side walls of the container body, with the top-hung windows and exhaust fans arranged alternately. The window frames of the top-hung windows 7 are made of aluminum profiles, equipped with sliding supports, open outwards, and the glass is made of tempered double-layered laminated glass; the exhaust fans 8 are external rotor axial flow fans that exhaust air outwards, and the louvers 4 at the bottom serve as the air inlets for the exhaust fans, facilitating ventilation and heat dissipation of the internal equipment. The first functional area 100 is separated from the second functional area 200 by a partition wall 10, and the power cables of all electrical equipment are connected to the third functional area 300 through the top cable tray.

[0065] The equipment inside the first functional area 100 includes a welding machine 104, an electric welding wire reel 105, a welding wire spool 102, a dust collection device 101, a heating and insulation device 103, and a wire guide 108. The electric welding wire reel 105 is suspended and fixed to the top of the container. The welding machine 104, welding wire spool 102, dust collection device 101, and heating and insulation device 103 are all placed at the ends of the container body, backing onto the container's auxiliary passageway for easy inspection and maintenance. The wire guide 108 is suspended from the top of the container body and is used to guide the welding wire and prevent tangling.

[0066] The electric welding cable reel 105 has automatic retrieval and automatic limit functions. A welding cable pulley device is suspended at the front of the reel, allowing for individual cable winding to prevent tangling. A control box controls the motor's forward and reverse rotation to achieve the required cable winding and unwinding. The welding machine 104 is a fully digital automatic surfacing welding machine equipped with a DC arc welding power supply and a built-in circulating cooling water tank. The welding machine 104 is fixed to the lower layer of the steel frame 106 and secured to the housing via bolts at the bottom of the frame. The welding wire hopper 102 is a paper drum design, containing the welding wire. A dust cover is installed on the top, along with a wire guide tube. The hopper is placed on a tray with a handle and two directional and two omnidirectional polyurethane wheels with brakes at the bottom for easy handling. The dust collection device 101 adopts a mobile, single-unit explosion-proof pulse filter cartridge dust collector. The filter element uses an all-around rotary automatic pulse back-blowing cleaning system and is equipped with a suction arm 107. A suction hood is installed at the end of the suction arm. By pulling the handle on the suction hood, it can easily and flexibly reach the target position and the angle of smoke and dust suction. It can also automatically position itself in the air without external force. It can absorb the fumes and harmful gases generated during welding and has an automatic dust removal function. The heating and heat preservation device 103 consists of a heater and a temperature control box, which can realize intelligent control of the heating temperature. The heater and the temperature control box are placed in separate areas. The temperature control box is placed in the equipment area and fixed on the upper layer of the steel frame 106, arranged side by side with the welding machine 104 and the circulating water cooling box. The heater is placed in the side wall storage cabinet 20 of the second functional area 200. The heater adopts an LCD type tracked ceramic electric heating belt, which is flexible and can be bent into an arc shape to cover the outer edge of the roller sleeve for heating. It can achieve preheating before roller sleeve welding and heat preservation during the welding process, preventing adverse consequences such as weld lifting, breakage, and embrittlement.

[0067] The second functional area 200, also known as the "operating room," includes: a double-door 22 on the side of the container body, serving as the "main passage" for roller sleeve construction; storage cabinets 20 on the side walls of the container body for tool storage; top-hung windows 7 arranged side-by-side at the top; lighting 14 in the middle of the container body for indoor illumination; and exhaust fans 8 arranged side-by-side on the side walls, with the top-hung windows and exhaust fans spaced apart. The top-hung windows 7 have aluminum frames, sliding supports, and outward opening; the glass is tempered double-layered laminated glass. The exhaust fans 8 use external rotor axial flow fans to exhaust air outwards, and together with the louvers at the bottom as the air inlet (i.e., air inlet 6), they form the entire smoke exhaust system of the operating room, facilitating indoor ventilation and cooling.

[0068] See Figure 5 and Figure 6The second functional area 200 contains equipment including welding fixture 201, chuck clamp 202, auxiliary transmission device 203, welding torch movement device 204, welding mechanism 205, cantilever lifting device 206, and slag removal tray 210. Welding fixture 201 is placed in the middle of the container, facing the container's "main passageway." Welding mechanism 205 is mounted on welding torch movement device 204. Chuck clamp 202, auxiliary transmission device 203, and welding torch movement device 204 are all mounted on welding fixture 201. The cantilever lifting device 206 is fixed to the container body using upper and lower flange connections and is installed on one side of the container's "main passageway" door. The lifting device's horizontal arm 207 can rotate along the support column. The horizontal arm 207 has a traveling rail, on which a monorail trolley 208 is slidably connected. The monorail trolley 208 is equipped with a hand-operated hoist 209 for easy lifting of roller sleeves and equipment. The slag removal disc 210 is located at the bottom of the welding fixture, directly below the grinding roller to be welded, and is used to collect welding slag.

[0069] The welding fixture 201 includes a double-column welding frame 211, a platform 212, a bearing housing 213, and a main shaft 214. The platform 212 is welded to the double-column welding frame 211. A steel ladder 215 is installed on one side of the platform 212. The bearing housing 213 has a split structure; its lower part is fixed to both ends of the double-column welding frame 211, while its upper part is detachable for use. Bearings are installed at both ends of the main shaft 214 and fixed within the bearing housing 213. A flange 216 is located in the middle of the main shaft 214 for connecting and fixing the chuck clamp 202. A short connecting pipe 217 is locked to the transmission end of the main shaft 214 by circumferentially arranged set screws 219. A second flange 218 is welded to one end of the short connecting pipe 217, which is used to connect and fix the auxiliary transmission device 203. The inner and outer diameters of the flanges of the main shaft 214 and the short connecting pipe 217 are machined to ensure coaxiality.

[0070] The chuck clamp 202 comprises a lead screw and slider device, a base plate 401, a connecting member 402, and a chuck head 403. The chuck clamp 202 has a self-aligning function; four sets of lead screws drive the slider device to move synchronously, thereby pressing against the inner ring of the roller sleeve and achieving roller sleeve centering. The lead screw and slider device is fixed to the base plate 401 via the connecting member 402, forming a "cross" shape. This allows the rotary motion to be converted into linear motion, which in turn drives the chuck head 403 to press against the inner ring of the roller sleeve. Simultaneously, the lead screw and slider device can ensure that the central axis of the roller sleeve coincides with the axis of the chuck clamp 202, thus achieving the self-aligning function.

[0071] The lead screw and slider device includes a lead screw 404, a lead screw nut 405, a second bearing seat 406, a second bearing 407, an end cap 408, a slider 409, a connecting plate 410, a first guide rail 411, a handwheel 412, a dust cover 413, etc. The lead screw 404 is a trapezoidal lead screw with a self-locking function. The lead screw nut 405 is threaded onto the lead screw 404. The second bearing seat 406 is installed at both ends of the first guide rail 411 through the end cap 408. The slider 409 and the first guide rail 411 are in a sliding fit with a tongue and groove joint. The slider 409 has grooves on both sides and is slidably connected to the first guide rail 411. Each of the four sliders 409 has a graduated scale on its side. During use, rotating the four sets of handwheels 412 controls the extension and retraction of the four sliders 409. The extension and retraction distances are ensured to be consistent by observing the scale readings, achieving alignment with the roller sleeve. The tail of the slider 409 is fixed to the lead screw nut 405 via a connecting plate 410. Two sets of bearings 407 are installed in the bearing seats 406 at both ends and fixed to both ends of the lead screw 404. The handwheels 412 are installed at the ends of the lead screw 404. A dust cover 413 is installed on the top of the lead screw and slider assembly to prevent weld slag or spatter from entering the assembly and causing movement obstruction during welding. Rotating the four sets of handwheels 412 drives the lead screw 404 to rotate, ultimately causing the sliders 409 to slide.

[0072] The auxiliary transmission device 203 includes a connecting frame 501, a transition beam 502, a rotating shaft 503, a large gear ring 504, a small gear 505, a protective cover 506, a conductive device 507, a proximity switch 508, a motor reducer 509, a motor base 510, etc. The connecting frame 501 adopts a six-fork arm design to improve stability. The large gear ring 504 is installed on the six-fork arm of the connecting frame 501 by bolt connection. The other side of the inner ring of the connecting frame 501 is provided with a threaded hole, which is bolted to the flange 218 at the end of the main shaft 214. The rotating shaft 503 is rotatably connected to the inside of the transition beam 502 through a bearing. The head of the rotating shaft 503 is in sliding fit with the inner ring of the connecting frame 501, and the rotating shaft 503 is fixed to the connecting frame 501 by bolts. The tail of the rotating shaft is rotatably connected to the conductive device 507. The conductive device 507 is a clamp plate, which is rotatably connected to the head of the rotating shaft 503 by bolt connection. The clamp plate is connected to the grounding cable of the welding machine. During use, conductive paste is applied to the mating surface between the clamp plate and the rotating shaft 503 to increase conductivity. The motor base 510 is welded to the transition beam 502, and the motor reducer 509 is installed on the motor base 510. On the 10th, the gear clearance is adjusted by the set screw. One end of the transition beam 502 is fixed to the double column welding frame 211, so that the transition beam 502 and the motor reducer 509 remain relatively fixed. After the power is turned on, the motor reducer 509 causes the connecting frame 501 to rotate through gear transmission. The proximity switch 508 is fixed on the transition beam 502. Bolts are installed on the upper pitch circle of the connecting frame 501 to facilitate recording the number of rotations. The protective cover 506 adopts a split design, the upper part is detachable, and it is set on the periphery of the large gear ring 504. It is connected to the double column welding frame 211 by bolts. The pinion 505 is fixed to the output shaft of the motor reducer 509. The pinion 505 meshes with the large gear ring 504. When in use, the rotation of the pinion 505 drives the rotation of the large gear ring 504, which in turn drives the connecting frame 501 to rotate, which in turn drives the main shaft 214 to rotate, and finally drives the roller sleeve to rotate. The auxiliary transmission device 203 adopts a two-stage transmission of a geared motor and a gear set to achieve the linear speed requirements for welding. The motor reducer 509 uses a variable frequency motor to control the rotation speed of the vertical mill roller sleeve. The connection between the large gear ring 504 and the main shaft 214 can ensure coaxiality, making the rotation process of the roller sleeve more stable and helping to ensure the quality of welding.

[0073] The welding torch motion device 204 consists of an X-shaped traveling crossbeam 601, a Y-shaped traveling vertical beam 602, a crossbeam support 603, a support rotation shaft 604, a moving slide plate 605, a traveling drive device 606, a wire loader 607, and a welding torch support 608. The two shafts of the welding torch motion device 204 are controlled by two worm gear reducer motors. The welding torch travel trajectory can be set in the control system. The height of the welding torch can be adjusted by the lifting drive device, and the horizontal position of the welding torch can be adjusted by the translation drive device, so that the welding torch head is aligned with the grinding roller surface to be repaired. While welding, the grinding roller slowly rotates around its own axis. After one circle of the grinding roller surface is welded, the position of the welding torch head is adjusted according to the shape of the grinding roller surface to weld other parts.

[0074] The two columns (left column and right column) of the crossbeam support 603 are each equipped with two parallel guide rails 610 on their sides. The left column is rotatably connected to the double column welding frame 211 via the support rotation shaft 604. The bottom of the support rotation shaft 604 is fixed to the double column welding frame 211 by bolt connection. The support rotation shaft 604 has a bearing connected to the left column installed inside. The right column is detachably installed on the other side of the double column welding frame 211. The bottom of the right column is equipped with a sliding wedge block with limit. In use, the crossbeam support 603 can be rotated relative to the left column by the support rotation shaft 604, which facilitates the disassembly and assembly of the roller sleeve. The X-shaped traveling beam 601 is fixed to the movable slide plate 605 at both ends by bolts. The movable slide plate 605 is slidably connected to the guide rails 610 on the left and right columns of the beam support 601 via rollers 611. The guide rails 610 are provided with multiple limiting holes for limiting the movable slide plate 605, and limiting bolts are connected in the limiting holes. By connecting the limiting bolts to the limiting holes at different positions, the movable slide plate 605 at different heights can be limited, thereby allowing manual adjustment of the height of the movable slide plate 605.

[0075] The walking drive device 606 includes a housing and multiple drive motors and pulleys mounted on the housing. The upper part of the X-shaped walking beam 601 is connected to a rack, and the lower part is connected to a guide rail. It has limiters at both ends. The output end of one drive device on the housing meshes with the rack on the X-shaped walking beam 601 via a gear, and one pulley on the housing is slidably connected to the guide rail on the X-shaped walking beam 601. The left side of the Y-shaped walking beam 602 is connected to a rack, and the right side is connected to a guide rail. It has limiters at both ends. The output end of another drive device on the housing meshes with the rack on the Y-shaped walking beam 602 via a gear, and another pulley on the housing is slidably connected to the guide rail on the Y-shaped walking beam 602. The walking drive device 606 moves left and right along the X-direction on the X-shaped walking beam 601 guide rail via a rack and pinion mechanism. The walking drive device 606 also moves the Y-shaped walking beam 602 up and down along the Z-direction via gear transmission.

[0076] The welding torch bracket 608 comprises a connecting seat and a welding torch angle adjuster. The connecting seat is installed on the Y-shaped vertical beam 602. The welding torch angle adjuster consists of two fixed rods, one pull rod, and one connecting rod. Each node is locked and fixed by a cross-shaped nut. The two fixed rods are installed side by side on the connecting seat and fixed to the Y-shaped vertical beam 601 by bolt connection. One end of the connecting rod has a flange for connecting and fixing the welding mechanism 205. The vertical pull rod is used to connect the two fixed rods and the connecting rod, which plays a supporting and balancing role to prevent the welding torch from falling. The cross-shaped nut structure can realize multi-angle adjustment of the welding torch to realize various welding processes. The fixed rods, pull rods, and connecting rods are all made of aluminum rods and wrapped with an insulating sleeve to achieve double protection that isolates the welding torch cable from electrical equipment.

[0077] The cable loader 607 is rotatably connected to one end of the top of the walking drive device 606. The cable loader 607 rotates along the fixed shaft, causing the drive motor cable and welding torch cable to change positions closely following the movement of the welding torch 702, always keeping the cable away from the welding area and extending the cable's service life.

[0078] The welding mechanism 205 includes a fixed base 701, a welding torch 702, a wire feeding device 703, a wire straightening device 704, etc. The connecting rod between the fixed base 701 and the welding torch bracket 608 is fixed by bolts. The wire feeding motor in the wire feeding device 703 is controlled by a DC servo motor. The wire feeding device 703 is installed on the fixed base 701 by bolts. The welding torch 702 consists of a torch rod, a torch head, and a conductive nozzle. The welding torch is a water-cooled welding torch. The torch rod has an inlet pipe interface and an outlet pipe interface for connecting to a circulating water tank. The torch head is fixed to the bottom of the wire feeding device 703 by bolts. A junction plate is welded on the torch rod for connecting the welding machine cable. The torch head is fixed by a set screw at the tail of the torch rod. The conductive nozzle is fixed to the torch head by a set screw. The welding wire passes through the hole in the welding torch 702 and finally enters the conductive nozzle. The cable and the water cooling device are movably connected to the welding torch. The wire alignment device 704 is fixed to the top of the wire feeding device 703. The wire guide tube is installed on the top of the wire alignment device 704.

[0079] The wire straightening device 704 includes multiple straightening wheels and a straightening support. A wire guide tube is connected to the top of the straightening support. The multiple straightening wheels are rotatably connected to the straightening support. The welding wire in the welding wire hopper 102 passes through the wire guide tube and enters the straightening wheels in the wire straightening device 704 for straightening. The straightened welding wire then enters the wire feeding device 703. The wire straightening device 704 uses a combination of three straightening wheels, arranged in a left-right 1 configuration on the straightening support. The welding wire from the welding wire hopper first passes through the wire guide tube into the straightening device 704 for straightening, and then enters the wire feeding device 703. Through the grooves of the wire feeding wheels, the wire feeding motor controls the rotation of the wire feeding wheels, feeding the welding wire into the welding torch 702, achieving continuous automatic welding.

[0080] The wire feeding device 703 includes a wire feeding bracket, a wire feeding motor, a wire feeding wheel, and a wire feeding wheel clamping mechanism. The wire feeding bracket is connected to the wire feeding bracket, and the wire feeding motor is connected to the wire feeding bracket. The output end of the wire feeding motor is connected to the wire feeding wheel. The welding wire is located in the wire feeding groove of the wire feeding wheel. The wire feeding bracket is provided with a wire feeding wheel clamping mechanism for clamping the welding wire into the wire feeding groove of the wire feeding wheel. The head of the welding torch 702 is connected to the wire feeding bracket. The wire feeding motor is a DC servo motor. The wire feeding wheel is connected to the shaft of the wire feeding motor to provide wire feeding force. The wire feeding wheel is a knurled wheel with grooves. The clamping wheel in the wire feeding wheel clamps the welding wire into the wire feeding groove of the wire feeding wheel. The rotation of the wire feeding wheel generates friction to drive the welding wire to move. The structure of the wire feeding wheel clamping mechanism can adopt the existing structure. In this embodiment, the clamping force is adjustable by using a spring and screw locking. During normal operation, the spring is in a compressed state and provides elastic force along the direction of the pull rod. The clamping force of the welding wire is generated by the lever action of the connecting rod. When in use, it is only necessary to adjust the spring compression and elastic force to adjust the clamping force.

[0081] Both the wire alignment bracket and the wire feeding bracket are equipped with wire guide holes. The welding wire enters the welding torch 702 through the wire guide holes of the wire alignment bracket and the wire feeding bracket.

[0082] The third functional area 300, also known as the "central control room," includes: a single-opening door 3 on the side of the container, equipped with an escape lock and door closer; an emergency lighting device 37 on the ceiling; a rubber insulating carpet on the floor, which is wear-resistant, slip-resistant, and high-voltage resistant; a grounding device at the bottom of the container; and fire extinguishers in the corners for safety. For the convenience of on-site staff for temporary work and rest, the container is also equipped with desks 32 and chairs 33. The chairs are foldable to improve space utilization. The desks are fixed to the partition wall 11 with brackets. Multiple sockets 38 are arranged side-by-side above the desks, and cable interfaces are provided below for connecting to the central control screen computer 34. Storage cabinets 30 are arranged side-by-side on both walls for easy storage. A distribution box 31 is installed on one side of the single-opening door, equipped with leakage protection and multiple circuit breakers to control the power supply to the equipment inside the container, including air conditioning, lighting, ventilation, and sockets. In addition, the container is equipped with an air conditioner (36 units) for indoor cooling, and the side walls are made of sandwich insulation panels for indoor thermal insulation. When in use, a laptop is placed on the desktop; simply connect the bottom cable interface to transfer all information from the central control screen to the computer.

[0083] The third functional area 300 includes a power distribution section and a control section, which are connected by various cables. The power distribution section mainly consists of the container power distribution cabinet 301, which provides power to various actuators. The control section mainly consists of the central control panel cabinet 302, the welding machine control cabinet 303, and wireless handheld remote controls, etc., used to receive input signals from various operating switches and sensors, perform logic operations, and drive actuators such as motors. The control cabinet and power distribution cabinet are placed side by side on one side of the container end. At the same time, the equipment heat dissipation vents are equipped with louvers on the container side wall for cooling the electrical equipment. The power interface 9 is located on the back of the power distribution cabinet 301, corresponding to the external end wall of the container. In use, simply connecting the external power cord to the main input terminal of the power interface 9 can provide power to all equipment inside the container, resulting in a high degree of integration.

[0084] In addition, the central control room is equipped with electronic devices such as a real-time monitoring system, smoke alarm devices, and control status indicator lights. The monitoring information is uniformly integrated into the central control screen, which facilitates real-time monitoring of the roller sleeve welding status.

[0085] The central control cabinet 302 is controlled by a complete PLC system. Multiple touch screens are installed on the cabinet, and the screen can be switched via soft keys at the bottom. Working parameters and status are displayed on the touch screens, and various process parameters required for welding can be set. Different automatic and manual modes can be selected to operate the equipment. The human-machine interface allows for touch operation, and the intelligent fully automatic control system provides comprehensive and effective automatic control and monitoring of the entire roller sleeve welding process, with real-time detection and alarms to ensure safe, stable, and reliable equipment operation. Workers can change welding parameters and adjust the welding torch position on the control panel. The wireless handheld remote control allows for manual start / stop and position movement, improving convenience during construction. The welding machine control cabinet 303 mainly controls the welding machine and is equipped with a touch screen. The screen can be switched via soft keys at the bottom, and the welding status and parameters can be adjusted. In addition, the cabinet has operation panel buttons, from top to bottom: emergency stop, welding machine start, and welding machine stop.

[0086] This embodiment also provides an operation method for a containerized mobile welding workstation for vertical mill roller sleeves, including the following steps:

[0087] 1) Transport the container to the mill site, open the double door 2 on the side of the container, rotate the lifting arm 207 on the cantilever lifting device 206, rotate the crossbeam bracket 603, and hoist the chuck clamp 202 and the main shaft 214 to the outside of the container.

[0088] 2) Install the chuck clamp 202, rotate the four sets of lead screw handwheels respectively, press the chuck head against the inner ring rib of the vertical mill roller sleeve, observe the scale on the side of the slider, ensure that the scale of the four sets of lead screw slider devices is consistent, and ensure that the chuck clamp and the vertical mill roller sleeve are concentric.

[0089] 3) Install the main shaft 214. Connect and fix the flange 216 in the middle of the main shaft 214 to the base plate 401 of the chuck clamp 202 with bolts. Use the cantilever lifting device 206 to lift the main shaft 214 into the container body and install it on the bearing seats at both ends of the double column welding frame 211.

[0090] 4) Install the auxiliary transmission device 203. Install the auxiliary transmission device 203 on the transmission end of the main shaft 214 and fix it with bolts.

[0091] 5) Alignment: By manually rotating the roller sleeve and using a dial indicator, the position of the vertical mill roller sleeve is finely adjusted using the self-aligning device (screw and slider device) on the chuck fixture, so that the concentricity between the roller sleeve and the main shaft is <1mm.

[0092] 6) Start the welding torch movement device 204, restore the initial installation position, adjust the position of the walking drive device 606, and adjust the height of the welding torch 702 so that the torch head is aligned with the surface to be welded on the vertical grinding roller sleeve.

[0093] 7) Preheating of the roller sleeve before welding: Wrap the ceramic electric heating belt around the outer surface of the vertical mill roller sleeve, connect the heater, start the temperature control box, and continuously heat the roller sleeve according to the preheating temperature set in advance.

[0094] 8) Connect the welding machine power supply, adjust the welding wire position, and turn on all electrical equipment in the box. After debugging, the surfacing operation can be carried out.

[0095] The beneficial effects of this invention are:

[0096] The containerized mobile welding workstation for vertical mill roller sleeves provided by this invention features lighter and more reliable components compared to traditional equipment. Furthermore, all components are integrated into a single container, simplifying container handling and on-site preparation. The welding process can be completed in a single clamping operation, ensuring stable welding performance and a safe welding process, significantly improving production efficiency. In practical applications, it saves on-site construction time, reduces the number of workers, and ultimately lowers equipment maintenance costs for mill users.

[0097] This containerized welding workstation has a clear functional zoning design, and each zone can be customized according to different needs. It has a high degree of automation, which greatly reduces the labor intensity of operators, optimizes the working environment, achieves precise and error-free production process control, and greatly improves the quality and efficiency of roller sleeve welding.

[0098] The scope of protection of this invention includes, but is not limited to, the above embodiments. The scope of protection of this invention is defined by the claims. Any substitutions, modifications, or improvements to this technology that are easily conceived by those skilled in the art fall within the scope of protection of this invention.

Claims

1. A container-type mobile welding workstation for vertical mill roller sleeves, characterized in that, Includes a container body, the interior of which is provided with a first functional area, a second functional area and a third functional area, and the container body is equipped with a door; The first functional area includes a welding machine, a welding wire hopper, a dust collection device, and a heating and insulation device; The second functional area includes welding fixtures, chuck clamps, auxiliary transmission devices, welding torch movement devices, and welding mechanisms. The welding fixtures are placed inside the container, and the chuck clamps, auxiliary transmission devices, and welding torch movement devices are all mounted on the welding fixtures. The chuck clamps are used to clamp the roller sleeves, and the auxiliary transmission devices are used to drive the roller sleeves to rotate via the chuck clamps. The welding mechanism is mounted on the welding torch movement device, which is used to drive the welding mechanism to move. The welding torch in the welding mechanism is connected to the welding machine via a cable. The welding torch in the welding mechanism is connected to the welding wire in the welding wire hopper. The heating and heat preservation device is used to heat the roller sleeve, and the suction hood on the dust collection device is located near the welding torch. The third functional area includes a power distribution section and a control section. The power distribution section is used to provide power to the actuators inside the container body, and the control section is used to control the operation of the actuators inside the container body. The welding fixture includes a double-column welding frame, a platform, bearing housing 1, and a main shaft; the platform is fixed to the double-column welding frame as a whole, a steel ladder is provided on one side of the platform, the bottom of the two bearing housings 1 are respectively connected to the two ends of the double-column welding frame, the two ends of the main shaft are respectively rotatably connected to the bearing housings 1 through bearing 1, a flange 1 is fixedly connected to the middle of the main shaft, the flange 1 is connected to the chuck clamp, the transmission end of the main shaft is connected to a short pipe, one end of the short pipe is connected to a flange 2, and the flange 2 is connected to an auxiliary transmission device; The auxiliary transmission device includes a connecting frame, a transition beam, a rotating shaft, a large gear ring, a small gear, a protective cover, a conductive device, a proximity switch, a motor reducer, and a motor base. The connecting frame adopts a six-fork arm structure, with the large gear ring connected to the six-fork arm of the connecting frame, and one side of the connecting frame connected to flange two. One end of the rotating shaft is connected to the connecting frame, and the rotating shaft is rotatably connected inside the transition beam. A conductive device is rotatably connected to the end of the rotating shaft, and the conductive device is connected to the welding machine grounding cable. One end of the transition beam is fixedly connected to the double-column welding frame, the motor base is fixedly connected to the transition beam, the motor reducer is fixedly connected to the motor base, and the output end of the motor reducer is connected to a small gear, which meshes with the large gear ring. The proximity switch is located on the transition beam, and bolts are connected to the connecting frame to facilitate recording the rotation number signal. The protective cover is located around the large gear ring and is fixedly connected to the double-column welding frame.

2. The containerized mobile welding workstation for vertical mill roller sleeves according to claim 1, characterized in that, The container body is connected by partition wall one and partition wall two. The first functional area, the second functional area and the third functional area are arranged from left to right inside the container body. The first functional area and the second functional area are separated by partition wall one, and the second functional area and the third functional area are separated by partition wall two. The partition wall 1 is equipped with a pipe opening and a cable connection port; the dust collection device is equipped with a suction arm, which passes through the pipe opening on the partition wall 1 and is fixedly connected to the suction hood; the welding machine's cable is connected to the welding gun through the cable connection port on the partition wall 1 and the cable is connected to the welding gun; the partition wall 2 has a single door on one side and a glass window on the other side.

3. The containerized mobile welding workstation for vertical mill roller sleeves according to claim 2, characterized in that, The left end face of the container body is provided with a double door, which is located on the left side of the first functional area; the front side of the container body is provided with a double door and a single door, which are located on the front side of the second functional area and the single door is located on the front side of the third functional area; the front side of the container body is provided with multiple heat dissipation vents, which are located on the front side of the first and third functional areas respectively; the bottom of the rear side of the container body is provided with an air inlet; the top of the rear side and the top of the front side of the container body are respectively provided with a top-hung window and an exhaust fan, which are arranged alternately; the right end face of the container body is provided with a power interface, which is connected to the power distribution section of the third functional area; the interior of the container body is also provided with lighting.

4. The containerized mobile welding workstation for vertical mill roller sleeves according to claim 1, characterized in that, A steel frame is placed in the first functional area. The welding machine is placed on the lower layer of the steel frame. The heating and insulation device includes a temperature control box and a heater. The temperature control box and the heater are connected. The temperature control box is placed on the upper layer of the steel frame. The heater is placed in a cabinet on the side wall of the second functional area.

5. The containerized mobile welding workstation for vertical mill roller sleeves according to claim 1, characterized in that, The chuck clamp includes a lead screw and slider assembly, a base plate, a connector, and a chuck head; The lead screw and slider device includes a lead screw, a lead screw nut, a second bearing seat, a second bearing, a slider, a connecting plate, a first guide rail, a handwheel, and a dust cover. The lead screw nut is threadedly connected to the lead screw. The second bearing seat is connected to both ends of the first guide rail. Both ends of the lead screw are rotatably connected to the second bearing seat via the second bearing. The tail of the slider is connected to the lead screw nut via the connecting plate. The slider and the first guide rail are slidably connected by a tongue and groove fit. The slider has a scale on its side. A clamp is connected to the top of the slider and is used to hold the inner ring of the roller sleeve. The handwheel is connected to the end of the lead screw. The dust cover is connected to the first guide rail. There are multiple sets of lead screw and slider devices. The guide rails inside the lead screw and slider device are connected to the base plate through connectors, and the base plate is connected to the flange.

6. The containerized mobile welding workstation for vertical mill roller sleeves according to claim 1, characterized in that, The welding torch movement device consists of an X-shaped traveling beam, a Y-shaped traveling beam, a beam support, a support rotation shaft, a sliding plate, a travel drive device, a cable holder, and a welding torch support. The beam support has a left column and a right column fixedly connected to its two ends, each with a guide rail. The bottom of the left column is rotatably connected to the double-column welding frame via the support rotation shaft, while the bottom of the right column is detachably connected to the double-column welding frame. The sliding plate is slidably connected to the guide rail, which has multiple limiting holes for positioning the sliding plate and connecting limiting bolts. The X-shaped traveling beam is connected to the sliding plate at both ends and has a travel drive device that drives itself to move on it. The Y-shaped traveling beam is mounted on the travel drive device, which also drives it. The cable holder is rotatably connected to the top of the travel drive device. The welding torch support is connected to the Y-shaped traveling beam and to the welding mechanism. The welding torch support includes a connecting seat and a welding torch angle adjuster. The connecting seat is connected to the Y-shaped vertical beam. The welding torch angle adjuster includes two fixed rods, one pull rod, and one connecting rod. The two fixed rods are connected side by side to the connecting seat. The pull rod is connected to the two fixed rods through a cross-shaped nut. The connecting rod is connected to the pull rod through a cross-shaped nut. The flange at one end of the connecting rod is connected to the welding mechanism. The fixed rods, pull rod, and connecting rod are all covered with an insulating sleeve.

7. The containerized mobile welding workstation for vertical mill roller sleeves according to claim 6, characterized in that, The welding mechanism includes a fixed base, a welding torch, a wire feeding device, and a wire straightening device; the fixed base is connected to a connecting rod inside the welding torch bracket, the wire feeding device is connected to the fixed base, the wire straightening device is connected to the top of the wire feeding device, the welding torch head is connected to the bottom of the wire feeding device, and a wire guide tube is connected to the top of the wire straightening device. The wire straightening device includes multiple wire straightening wheels and a wire straightening bracket. A wire guide tube is connected to the top of the wire straightening bracket. The multiple wire straightening wheels are rotatably connected to the wire straightening bracket. The welding wire in the welding wire hopper passes through the wire guide tube and enters the wire straightening device between the wire straightening wheels for straightening. The straightened welding wire then enters the wire feeding device. The wire feeding device includes a wire feeding bracket, a wire feeding motor, a wire feeding wheel, and a wire feeding wheel clamping mechanism. The wire feeding bracket is connected to the wire feeding bracket, the wire feeding motor is connected to the wire feeding bracket, the output end of the wire feeding motor is connected to the wire feeding wheel, the welding wire is located in the wire feeding groove of the wire feeding wheel, and the wire feeding bracket is provided with a wire feeding wheel clamping mechanism for clamping the welding wire into the wire feeding groove of the wire feeding wheel; the welding torch head is connected to the wire feeding bracket. Both the wire alignment bracket and the wire feeding bracket are equipped with wire guide holes. The welding wire enters the welding gun through the wire guide holes of the wire alignment bracket and the wire feeding bracket.

8. The containerized mobile welding workstation for vertical mill roller sleeves according to claim 7, characterized in that, The welding machine comes with its own circulating cooling water tank, and the welding torch is a water-cooled welding torch. The torch barrel is equipped with an inlet pipe interface and an outlet pipe interface for connecting to the circulating cooling water tank.

9. The containerized mobile welding workstation for vertical mill roller sleeves according to claim 7, characterized in that, The second functional area also includes a cantilever lifting device and a slag removal plate; The cantilever lifting device includes a support column, a lifting device horizontal arm, a monorail trolley, and a hand-operated hoist. The bottom of the support column is connected to the bottom of the container body, the lifting device horizontal arm is rotatably connected to the support column, a trolley track is provided on the lifting device horizontal arm, the monorail trolley is slidably connected to the trolley track, and a hand-operated hoist is connected to the monorail trolley. The slag removal disc is placed below the spindle of the welding fixture.

10. The containerized mobile welding workstation for vertical mill roller sleeves according to claim 1, characterized in that, The power distribution section of the third functional area includes a power distribution box, which is electrically connected to the welding machine, dust collection device, heating and heat preservation device, proximity switches and motor reducers in the auxiliary transmission device, drive motor in the walking drive device, wire feeding motor in the welding mechanism, exhaust fan and lighting lamp. The control unit includes a central control panel cabinet, a welding machine control cabinet, and a wireless handheld remote control. The welding machine control cabinet is electrically connected to the welding machine and is used to control the operation of the welding machine. The central control panel cabinet is electrically connected to the proximity switches and motor reducers in the dust collection device, heating and insulation device, auxiliary transmission device, drive motor in the travel drive device, wire feeding motor in the welding mechanism, exhaust fan, and lighting, and is used to control the operation of the dust collection device, heating and insulation device, motor reducer, drive motor in the travel drive device, wire feeding motor in the welding mechanism, exhaust fan, and lighting. The wireless handheld remote control is wirelessly connected to the central control panel cabinet and is used to control the operation of the dust collection device, heating and insulation device, motor reducer, drive motor in the travel drive device, wire feeding motor in the welding mechanism, exhaust fan, and lighting through the central control panel cabinet. The floor of the third functional area is covered with rubber-insulated carpet, and the third functional area also includes desks, office chairs, storage cabinets, air conditioners, and emergency lighting devices.

11. An operation method for a containerized mobile surfacing welding workstation based on the vertical mill roller sleeve as described in claim 9, characterized in that, Includes the following steps: 1) Transport the container to the mill site, open the double door on the front of the second functional area, rotate the horizontal arm of the lifting device on the cantilever lifting device, rotate the crossbeam bracket in the welding torch motion device, and lift the chuck clamp and main shaft to the outside of the container through the cantilever lifting device. 2) Install the chuck fixture on the inner ring of the roller sleeve. Turn the handwheels to press the chuck head against the inner ring rib of the roller sleeve. Observe the scale on the side of the slider to ensure that the scales of the multiple sets of screw slider devices are consistent and that the chuck fixture is concentric with the roller sleeve. 3) Install the main shaft, connect the flange one in the middle of the main shaft to the bottom plate in the chuck clamp, lift the main shaft into the container body through the cantilever lifting device, and install both ends of the main shaft on the bearing seats two at both ends of the double column welding frame, so that the main shaft is rotatably connected to the bearing seats two through the bearings two. 4) Install the auxiliary transmission device and mount it on flange two at the drive end of the main shaft; 5) Alignment: By rotating the roller sleeve and using a dial indicator, the position of the roller sleeve is finely adjusted using the screw and slider device on the chuck fixture to ensure that the concentricity between the roller sleeve and the main shaft is <1mm. 6) Start the welding torch movement device, adjust the position of the walking drive device, and adjust the height of the welding torch so that the torch tip is aligned with the surface to be welded on the roller sleeve. 7) Preheating of the roller sleeve before welding: The heater of the heating and heat preservation device is a ceramic electric heating belt. The ceramic electric heating belt of the heating and heat preservation device is wrapped around the outer surface of the roller sleeve. The temperature control box is started, and the temperature control box controls the ceramic electric heating belt to continuously heat the roller sleeve. 8) Turn on the welding machine power, adjust the welding wire position, and perform the surfacing operation.

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