Device and method for dismounting and mounting a wheel set of a ladle car

Abstract

The application discloses a dismounting device and method for a ladle car wheel set, and the device comprises a bottom plate, a transverse moving trolley, a lifting platform and a transverse moving oil cylinder; the transverse moving trolley is located on the bottom plate and is driven to move transversely on the bottom plate by the transverse moving oil cylinder; the transverse moving trolley is provided with a jacking oil cylinder and the lifting platform; the jacking oil cylinder performs jacking operation on the wheel set; and the lifting platform supports the wheel set during lifting. The device is moved to a dismounting position when the wheel set is dismounted; the movable platform is adjusted to a proper position; the transverse moving trolley is moved to the dismounting position; the jacking oil cylinder is abutted to the wheel set frame to lower or jack up the wheel set frame; and the movable platform supports the wheel set frame during the period, so that the dismounting operation of the wheel set is realized. The device and the method overcome the defects of the traditional dismounting of the wheel set of the ladle car, are simple to install and easy to operate, can quickly and safely perform the dismounting operation of the wheel set of the ladle car, and improve the operation efficiency and the maintenance quality.

Description

Technical Field

[0001] This invention relates to the field of metallurgical machinery and equipment maintenance technology, and in particular to a device and method for disassembling and assembling wheel sets for ladle cars. Background Technology

[0002] Steel ladle cars are crucial equipment in steel mills, primarily used for transporting high-temperature steel ladles within metal smelting areas. The environment in which steel ladle cars operate is harsh, with the car body frequently exposed to high temperatures and steel slag. After a period of use, they require complete removal from the production line for maintenance. When a steel ladle car is taken off the production line for maintenance, its total weight exceeds 120 tons, and the crane's lifting capacity at the maintenance site is insufficient for the lifting requirements. Therefore, the hydraulic lifting function of a 200-ton hydraulic flatbed truck is used to lift the entire ladle car and place it on a pre-prepared tooling pad, achieving a one-time placement while maintaining the original lifting height. After the ladle car is placed, the 200-ton hydraulic flatbed truck drives away. At the original lifting height, the wheel assembly is 3.5 meters off the ground, which presents significant difficulties and safety hazards for the disassembly and reassembly of the wheel assembly. The wheel assembly requires three lifting points to be welded when using a crane for hoisting. However, one of these lifting points is inside the wheel assembly and lacks a crane attachment point. Typically, a 10-ton hand-operated hoist can be used in conjunction with the two outer lifting points for vertical lifting. This process results in significant tilting and slanting during hoisting, and improper coordination could potentially break the hoist, leading to a safety accident. Using a forklift for disassembly and assembly is also problematic due to limitations in the location and height of the disassembly / assembly work. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a device and method for disassembling and assembling wheel sets of ladle cars. The device and method overcome the defects of traditional disassembly and assembly of wheel sets of ladle cars. It is simple to install and easy to operate, and can quickly and safely disassemble and assemble wheel sets of ladle cars, thereby improving work efficiency and maintenance quality.

[0004] To solve the above-mentioned technical problems, the present invention provides a disassembly and assembly device for steel ladle car wheel sets, comprising a base plate, a transverse trolley, a lifting platform, and a transverse hydraulic cylinder.

[0005] The traverse trolley includes a flat plate, a support plate, a lifting cylinder, a fixing block, a set screw, wheels, a bearing cover, a self-aligning roller bearing, and a cylinder head support. The lifting cylinder is centrally located on the top surface of the flat plate, the fixing block is located at the four corners of the top surface of the flat plate, the set screw is screwed onto the fixing block, the support plate is located on the bottom surface of the flat plate, the wheels are located at the four corners of the support plate via the self-aligning roller bearing, the bearing cover abuts against the side of the self-aligning roller bearing, the cylinder head support is centrally located on one side of the bottom surface of the flat plate, and the wheels of the traverse trolley are located on the surface of the bottom plate.

[0006] The lateral movement cylinder is mounted on the surface of the base plate via a support seat and the cylinder head is connected to the cylinder head support of the lateral movement trolley. The lateral movement cylinder drives the lateral movement trolley to move laterally along the base plate.

[0007] The lifting platform includes a bottom frame, a fixed platform, a movable platform, and a working platform. The fixed platform is centrally located on the bottom frame, and the working platforms are located on the bottom frame and on both sides of the fixed platform. The fixed platform has vertical plates on its sides, and the vertical plates have grooves at intervals. The movable platform includes a support plate and channel steel on both sides of the support plate. The movable platform is located above the fixed platform, and the channel steel is inserted into the vertical plates. The channel steel and the vertical plates are fastened together by locking bolts that pass through the grooves. The lifting platform is spaced apart on the flat plate, and each bottom frame is located between corresponding fixed blocks of the transverse trolley.

[0008] A method for disassembling and assembling wheel sets for ladle cars based on the above-mentioned disassembly and assembly device includes the following steps:

[0009] Step 1: Disassembly of the steel ladle car wheel assembly

[0010] A. Use a crane to hoist the device to the position of the vehicle body where the wheel set needs to be removed, and make a rough adjustment of the position of the movable platform relative to the fixed platform according to the height of the wheel set;

[0011] B. Inlet and outlet oil pipes connecting the transverse hydraulic cylinder and the lifting hydraulic cylinder;

[0012] C. Start the lateral movement cylinder to move the lateral movement trolley directly under the wheel set, adjust the lifting cylinder to face the wheel frame of the wheel set, start the lifting cylinder and hold the wheel frame of the wheel set in place.

[0013] D. The operator stands on the work platform and uses a pneumatic wrench to remove the bolts that lock the wheel set frame from the steel ladle car frame. At this time, adjust the distance between the movable platform and the wheel set frame to keep it within 100mm to ensure safety and allow for sufficient return distance of the lifting cylinder.

[0014] E. After all the bolts that lock the wheel frame are removed, slowly retract the lifting cylinder and observe whether the wheel set is offset. If it is offset, make appropriate adjustments to ensure that the wheel set falls smoothly onto the movable platform.

[0015] F. Start the retraction of the transverse hydraulic cylinder, drive the transverse trolley to move the wheel set to the initial position, and use a crane to lift the wheel set away to complete the disassembly of the wheel set.

[0016] Step 2: Installation of steel ladle car wheel assembly

[0017] A. Use a crane to hoist the device to the position of the vehicle body where the wheel set needs to be installed, and make a rough adjustment of the position of the movable platform relative to the fixed platform according to the height of the wheel set;

[0018] B. Hoist the wheel assembly onto the movable platform, measure the required lifting height for the wheel assembly installation, and adjust the height of the movable platform to be below the wheel assembly installation position;

[0019] C. Inlet and outlet oil pipes connecting the transverse hydraulic cylinder and the lifting hydraulic cylinder;

[0020] D. Start the transverse hydraulic cylinder and slowly drive the transverse trolley to move the wheel set into the wheel set installation position. Observe whether the wheel set is offset from the installation position. If it is offset from the installation position, use the set screws of the transverse trolley to tighten the bottom frame position of the lifting platform to finely adjust the position until the wheel set is directly in the installation position.

[0021] E. Four long screws are inserted into the mounting screw holes of the wheel set frame and the steel ladle car frame. Nuts are screwed into both ends of the four long screws to connect the wheel set frame and the steel ladle car frame together to ensure the safety of the wheel set lifting process.

[0022] F. Start the lifting cylinder to press against the wheel frame and slowly lift the wheel set as a whole. After the wheel set reaches the installation position of the steel ladle car frame, tighten the locking bolts to install the wheel set. At the same time, remove the four long screws and finally tighten the locking bolts.

[0023] G. After the wheel assembly is installed, the lifting cylinder retracts, and the lateral movement cylinder is activated to drive the lateral movement trolley back to its initial position, completing the wheel assembly installation.

[0024] Furthermore, the position of the movable platform relative to the fixed platform is adjusted by lifting the support plate of the movable platform, causing the channel steel on both sides of the support plate to rise and fall along the vertical plate of the fixed platform. After adjustment, locking bolts inserted into the sliding groove of the vertical plate are used to secure the relative position of the channel steel and the vertical plate.

[0025] The present invention, a device and method for disassembling and assembling wheel sets for ladle cars, adopts the aforementioned technical solution. Specifically, the device includes a base plate, a lateral trolley, a lifting platform, and a lateral movement cylinder. The lateral movement trolley is located on the base plate and is driven to move laterally on the base plate by the lateral movement cylinder. The lateral movement trolley is equipped with a lifting cylinder and a lifting platform. The lifting cylinder lifts the wheel set, and the lifting platform supports the wheel set during the lifting process. In this method, during wheel set disassembly and assembly, the device is moved to the disassembly / assembly position, the movable platform is adjusted to a suitable position, the lateral movement trolley is moved to the disassembly / assembly position, and the lifting cylinder abuts against the wheel set frame to lower or lift it. During this process, the movable platform supports the wheel set frame, thus realizing the wheel set disassembly and assembly operation. This device and method overcome the shortcomings of traditional ladle car wheel set disassembly and assembly methods. It is simple to install and operate, and can quickly and safely perform wheel set disassembly and assembly operations for ladle cars, improving work efficiency and maintenance quality. Attached Figure Description

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0027] Figure 1 This is a schematic diagram of the disassembly and assembly device for steel ladle car wheel sets according to the present invention;

[0028] Figure 2 This is a schematic diagram of the top surface of the transverse trolley in this device;

[0029] Figure 3 This is a schematic diagram of the back of the transverse trolley in this device;

[0030] Figure 4 This is a schematic diagram of the lifting platform in this device. Detailed Implementation

[0031] Implementation, for example Figures 1 to 4 As shown, the present invention for disassembling and assembling wheel sets of steel ladle cars includes a base plate 1, a transverse trolley 2, a lifting platform 3, and a transverse hydraulic cylinder 4.

[0032] The traverse trolley 2 includes a flat plate 21, a support plate 22, a lifting cylinder 23, a fixing block 24, a set screw 25, wheels 26, a bearing cover 27, a self-aligning roller bearing 28, and a cylinder head support 29. The lifting cylinder 23 is centrally located on the top surface of the flat plate 21. The fixing block 24 is located at the four corners of the top surface of the flat plate 21. The set screw 25 is screwed onto the fixing block 24. The support plate 22 is located on the bottom surface of the flat plate 21. The wheels 26 are located at the four corners of the support plate 22 via the self-aligning roller bearing 28. The bearing cover 27 abuts against the side of the self-aligning roller bearing 28. The cylinder head support 29 is centrally located on one side of the bottom surface of the flat plate 21. The wheels 26 of the traverse trolley 2 are located on the surface of the base plate 1.

[0033] The bearing cap mates with the bearing seat on the support plate to fix the wheel; the support plate is welded to the flat plate as one piece, and the bearing seat on the support plate for mounting the wheel can be obtained by machine tool processing; the self-aligning roller bearing is assembled on the wheel to support the rotation of the flat plate.

[0034] The transverse hydraulic cylinder 4 is mounted on the surface of the base plate 1 via a support 41 and the cylinder head is connected to the cylinder head support 29 of the transverse trolley 2. The transverse hydraulic cylinder 4 drives the transverse trolley 2 to move laterally along the base plate 1.

[0035] The lifting platform 3 includes a bottom frame 31, a fixed platform 32, a movable platform 33, and a working platform 34. The fixed platform 32 is centrally located on the bottom frame 31, and the working platform 34 is located on the bottom frame 31 and on both sides of the fixed platform 32. The fixed platform 32 has vertical plates 35 on its sides, and the vertical plates 35 are provided with sliding grooves 36 at intervals. The movable platform 33 includes a support plate 37 and channel steels 38 on both sides of the support plate 37. The movable platform 33 is located above the fixed platform 32, and the channel steels 38 are inserted into the vertical plates 35. The channel steels 38 and the vertical plates 35 are fastened together by locking bolts 39 that pass through the sliding grooves 36. The lifting platform 3 is spaced apart on the flat plate 21, and each bottom frame 31 is located between the corresponding fixed blocks 24 of the transverse trolley 2.

[0036] During the disassembly and assembly of the wheel set, the lifting cylinder 23 of the transverse trolley 2 in this device is used to abut against the wheel frame 51 of the wheel set 5. During disassembly, the lifting cylinder 23 retracts, which in turn drives the wheel set 5 to descend. During installation, the lifting cylinder 23 lifts up to lift the wheel set 5 to the installation position. The movable platform 33 of the lifting platform 3 is used to support the wheel frame 51 of the wheel set 5 during the disassembly and assembly process to ensure the safety of the disassembly and assembly operation.

[0037] A method for disassembling and assembling wheel sets for ladle cars based on the above-mentioned disassembly and assembly device includes the following steps:

[0038] Step 1: Disassembly of the steel ladle car wheel assembly

[0039] A. Use a crane to hoist the device to the position of the vehicle body where the wheel set needs to be removed, and make a rough adjustment of the position of the movable platform relative to the fixed platform according to the height of the wheel set;

[0040] B. Inlet and outlet oil pipes connecting the transverse hydraulic cylinder and the lifting hydraulic cylinder;

[0041] C. Start the lateral movement cylinder to move the lateral movement trolley directly under the wheel set, adjust the lifting cylinder to face the wheel frame of the wheel set, start the lifting cylinder and hold the wheel frame of the wheel set in place.

[0042] D. The operator stands on the work platform and uses a pneumatic wrench to remove the bolts that lock the wheel set frame from the steel ladle car frame. At this time, adjust the distance between the movable platform and the wheel set frame to keep it within 100mm to ensure safety and allow for sufficient return distance of the lifting cylinder.

[0043] E. After all the bolts that lock the wheel frame are removed, slowly retract the lifting cylinder and observe whether the wheel set is offset. If it is offset, make appropriate adjustments to ensure that the wheel set falls smoothly onto the movable platform.

[0044] F. Start the retraction of the transverse hydraulic cylinder, drive the transverse trolley to move the wheel set to the initial position, and use a crane to lift the wheel set away to complete the disassembly of the wheel set.

[0045] Step 2: Installation of steel ladle car wheel assembly

[0046] A. Use a crane to hoist the device to the position of the vehicle body where the wheel set needs to be installed, and make a rough adjustment of the position of the movable platform relative to the fixed platform according to the height of the wheel set;

[0047] B. Hoist the wheel assembly onto the movable platform, measure the required lifting height for the wheel assembly installation, and adjust the height of the movable platform to be below the wheel assembly installation position;

[0048] C. Inlet and outlet oil pipes connecting the transverse hydraulic cylinder and the lifting hydraulic cylinder;

[0049] D. Start the transverse hydraulic cylinder and slowly drive the transverse trolley to move the wheel set into the wheel set installation position. Observe whether the wheel set is offset from the installation position. If it is offset from the installation position, use the set screws of the transverse trolley to tighten the bottom frame position of the lifting platform to finely adjust the position until the wheel set is directly in the installation position.

[0050] E. Four long screws are inserted into the mounting screw holes of the wheel set frame and the steel ladle car frame. Nuts are screwed into both ends of the four long screws to connect the wheel set frame and the steel ladle car frame together to ensure the safety of the wheel set lifting process.

[0051] F. Start the lifting cylinder to press against the wheel frame and slowly lift the wheel set as a whole. After the wheel set reaches the installation position of the steel ladle car frame, tighten the locking bolts to install the wheel set. At the same time, remove the four long screws and finally tighten the locking bolts.

[0052] G. After the wheel assembly is installed, the lifting cylinder retracts, and the lateral movement cylinder is activated to drive the lateral movement trolley back to its initial position, completing the wheel assembly installation.

[0053] Preferably, the position adjustment of the movable platform relative to the fixed platform is achieved by lifting the support plate of the movable platform, causing the channel steel on both sides of the support plate to rise and fall along the vertical plate of the fixed platform. After adjustment, locking bolts inserted into the sliding groove of the vertical plate are used to secure the relative position of the channel steel and the vertical plate.

[0054] This device and method transforms the traditional wheel assembly and disassembly process, which required a crane and a 10-ton hand-operated hoist for oblique pulling and lifting, into a process using a lateral trolley with lateral and lifting cylinders for movement and lifting. This significantly reduces the labor intensity of the disassembly and assembly work and improves efficiency. It also effectively enhances safety during the process. Furthermore, the device has a simple structure, is easy to implement, avoids various constraints on the disassembly and assembly work on-site, ensures the quality of wheel assembly, and demonstrates excellent technical effectiveness.

Claims

1. A device for disassembling and assembling wheel sets of ladle cars, characterized in that: This device includes a base plate, a transverse trolley, a lifting platform, and a transverse hydraulic cylinder; The traverse trolley includes a flat plate, a support plate, a lifting cylinder, a fixing block, a set screw, wheels, a bearing cover, a self-aligning roller bearing, and a cylinder head support. The lifting cylinder is centrally located on the top surface of the flat plate, the fixing block is located at the four corners of the top surface of the flat plate, the set screw is screwed onto the fixing block, the support plate is located on the bottom surface of the flat plate, the wheels are located at the four corners of the support plate via the self-aligning roller bearing, the bearing cover abuts against the side of the self-aligning roller bearing, the cylinder head support is centrally located on one side of the bottom surface of the flat plate, and the wheels of the traverse trolley are located on the surface of the bottom plate. The lateral movement cylinder is mounted on the surface of the base plate via a support seat and the cylinder head is connected to the cylinder head support of the lateral movement trolley. The lateral movement cylinder drives the lateral movement trolley to move laterally along the base plate. The lifting platform includes a bottom frame, a fixed platform, a movable platform, and a working platform. The fixed platform is centrally located on the bottom frame, and the working platforms are located on the bottom frame and on both sides of the fixed platform. The fixed platform has vertical plates on its sides, and the vertical plates have grooves at intervals. The movable platform includes a support plate and channel steel on both sides of the support plate. The movable platform is located above the fixed platform, and the channel steel is inserted into the vertical plates. The channel steel and the vertical plates are fastened together by locking bolts that pass through the grooves. The lifting platform is spaced apart on the flat plate, and each bottom frame is located between corresponding fixed blocks of the transverse trolley.

2. A method for disassembling and assembling wheel sets for steel ladle cars based on the disassembly and assembly device of claim 1, characterized in that... This method includes the following steps: Step 1: Disassembly of the steel ladle car wheel assembly A. Use a crane to hoist the device to the position of the vehicle body where the wheel set needs to be removed, and make a rough adjustment of the position of the movable platform relative to the fixed platform according to the height of the wheel set; B. Inlet and outlet oil pipes connecting the transverse hydraulic cylinder and the lifting hydraulic cylinder; C. Start the lateral movement cylinder to move the lateral movement trolley directly under the wheel set, adjust the lifting cylinder to face the wheel frame of the wheel set, start the lifting cylinder and hold the wheel frame of the wheel set in place. D. The operator stands on the work platform and uses a pneumatic wrench to remove the bolts that lock the wheel set frame from the steel ladle car frame. At this time, adjust the distance between the movable platform and the wheel set frame to keep it within 100mm to ensure safety and allow for sufficient return distance of the lifting cylinder. E. After all the bolts that lock the wheel frame are removed, slowly retract the lifting cylinder and observe whether the wheel set is offset. If it is offset, make appropriate adjustments to ensure that the wheel set falls smoothly onto the movable platform. F. Start the retraction of the transverse hydraulic cylinder, drive the transverse trolley to move the wheel set to the initial position, and use a crane to lift the wheel set away to complete the disassembly of the wheel set. Step 2: Installation of steel ladle car wheel assembly A. Use a crane to hoist the device to the position of the vehicle body where the wheel set needs to be installed, and make a rough adjustment of the position of the movable platform relative to the fixed platform according to the height of the wheel set; B. Hoist the wheel assembly onto the movable platform, measure the required lifting height for the wheel assembly installation, and adjust the height of the movable platform to be below the wheel assembly installation position; C. Inlet and outlet oil pipes connecting the transverse hydraulic cylinder and the lifting hydraulic cylinder; D. Start the transverse hydraulic cylinder and slowly drive the transverse trolley to move the wheel set into the wheel set installation position. Observe whether the wheel set is offset from the installation position. If it is offset from the installation position, use the set screws of the transverse trolley to tighten the bottom frame position of the lifting platform to finely adjust the position until the wheel set is directly in the installation position. E. Four long screws are inserted into the mounting screw holes of the wheel set frame and the steel ladle car frame. Nuts are screwed into both ends of the four long screws to connect the wheel set frame and the steel ladle car frame together to ensure the safety of the wheel set lifting process. F. Start the lifting cylinder to press against the wheel frame and slowly lift the wheel set as a whole. After the wheel set reaches the installation position of the steel ladle car frame, tighten the locking bolts to install the wheel set. At the same time, remove the four long screws and finally tighten the locking bolts. G. After the wheel assembly is installed, the lifting cylinder retracts, and the lateral movement cylinder is activated to drive the lateral movement trolley back to its initial position, completing the wheel assembly installation.

3. The method for disassembling and assembling wheel sets for ladle cars according to claim 2, characterized in that: The position of the movable platform relative to the fixed platform is adjusted by lifting the support plate of the movable platform, causing the channel steel on both sides of the support plate to rise and fall along the vertical plate of the fixed platform. After adjustment, the relative position of the channel steel and the vertical plate is secured by locking bolts inserted into the sliding groove of the vertical plate.

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