Replacement auxiliary device for primary suspension steel spring set of bogie

Abstract

The utility model provides a bogie primary suspension steel spring group replacement auxiliary device, including: body subassembly, slipway subassembly and door pillar subassembly, the bottom of body subassembly is equipped with moving mechanism and fixing mechanism, body subassembly passes through the moving mechanism movement, body subassembly passes through the fixing mechanism and is fixed with car lifter. The sliding table assembly is connected with the body assembly in a sliding mode, the sliding table assembly is connected with an axle box rotating arm, and the sliding table assembly drives the axle box rotating arm to ascend or descend. The door stand column assembly is connected with the body assembly, the door stand column assembly is arranged on the upper surface of the bogie, and the door stand column assembly assists in limiting the bogie. According to the replacement auxiliary device for the primary suspension steel spring set of the bogie, the problems existing in the original operation process are effectively solved through the measures of preventing a center rubber pile from being damaged, reducing damage to small parts, adapting to different base equipment and the like, and the maintenance efficiency, safety and convenience are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of urban rail transit vehicle overhauling, in particular to a bogie primary suspension steel spring set replacement auxiliary device. BACKGROUND

[0002] In the process of daily maintenance of the subway train, the primary suspension steel spring set of the bogie found abnormal in the maintenance operation needs to be replaced, and its maintenance process is particularly complex and time-consuming. The installation position of the primary suspension steel spring set is between the bogie body and the axle box rotating arm A2, referring to Figure 10 and 11 When replacing this key component, the first step is to ensure the safe separation of the bogie and the car body. Therefore, in order to effectively replace the steel spring set, it is necessary to first create enough operation space by lifting the bogie, and then remove the wheel sets one by one and lower the bogie. Subsequently, the whole bogie is moved to an open area for operation. This process not only requires delicate operation skills, but also needs the help of heavy equipment such as a travelling crane lifting device and a hydraulic jack to safely lift the heavy bogie to an appropriate height.

[0003] The operation method of the existing ordinary parking garage is as follows:

[0004] 1. Lifting the bogie using a lifting machine: placing four column-shaped tools (existing) on the four lifting positions of a single car body, lifting the bogie and the car body together by the lifting machine and the four column-shaped tools.

[0005] 2. Supporting the car body using the lifting machine: fixing the car body using the existing lifting machine.

[0006] 3. Separating the bogie and the car body: deflating the air spring, removing the connection between the air spring and the bogie, removing the center pin connecting the bogie and the car body, and the grounding cable B3. And pre-removing the connecting bolt of the primary vertical shock absorber A4 and the clamping hoop A3, removing the fastening bolt of the clamping hoop A3 and the axle box rotating arm A2. Separating the connecting bolt of the bogie anti-roll torsion bar and the car body, separating the fastening bolt of the bogie height adjustment valve and the car body, and separating the connecting bolt of the bogie upper transverse shock absorber and the car body.

[0007] 4. Moving the bogie: lowering the bogie using the lifting machine, separating the bogie and the car body, and moving the bogie to an open work station with a lifting crane.

[0008] 5. Separating the wheel set B2: removing the coupling bolt connecting the motor on the bogie and the gear box on the wheel set, removing the connecting bolts C2 / C4 and C1 / C3 of the gear box and the bogie (see Figure 12 ), and removing the positioning pin of the gear box on the bogie.

[0009] 6, replace the steel spring group: loosen the fixing bolt of the bogie and the axle box rotating arm A2, use the jack to top in the middle section of the axle box rotating arm A2, remove the safety pin of the axle box rotating arm A2 and the bogie, slowly lower the jack, make the steel spring group gradually restore to the free state from the working state, until the installation groove is taken out. After the old steel spring is taken out, the new steel spring is placed, then the reverse step is taken out, until the steel spring group is installed in place.

[0010] 7, wheel set reset: use the travelling crane to lift the bogie, then push the wheel set B2 to the specified position, slowly lower the travelling crane, until the wheel set is clamped into the axle box rotating arm A2. Reverse step 5-separate wheel set step, until the wheel set is reset.

[0011] 8, bogie reset: reverse step 4, step 3. Use the car lifter to lower the car body and the bogie. Thus the replacement of the steel spring group is completed.

[0012] In the current operation process, there are the following five problems.

[0013] Problem one, because there is a buffer rubber stack at the center pin, if the center pin is adhered or improperly operated, the rubber stack card plate is easily taken out. Because the rubber stack card plate is clamped into the bogie with the help of a professional press. Once taken out, if there is no professional equipment on site, the center rubber stack cannot be restored. The bogie cannot be restored, so that the vehicle cannot be used normally.

[0014] Problem two, when the bogie is separated from the car body, there are many steps, if there is negligence, the falling bogie will cause damage to other small parts (such as ground wire, height adjusting valve, motor power line, etc.), reduce the maintenance efficiency and vehicle equipment safety.

[0015] Problem three, because the types of car lifters are different in some bases, the operation method steps of replacing the steel spring group cannot completely match the equipment in the base, so that there are safety hazards in the operation process of replacing the steel spring group.

[0016] Problem four, when replacing the steel spring group, because the diameter of the installation groove is greater than the outer diameter of the steel spring, without the aid of reliable positioning tools, repeated disassembly and adjustment of the spring position may occur, which increases the maintenance time and greatly reduces the maintenance efficiency.

[0017] The utility model aims at solving the above problems. Utility model content

[0018] In order to solve the above problems, the utility model provides a bogie primary suspension steel spring group replacement auxiliary device, comprising:

[0019] A body component, wherein a moving mechanism and a fixing mechanism are provided at the bottom of the body component, the body component is moved by the moving mechanism, and the body component is fixed to the vehicle lift by the fixing mechanism;

[0020] A slide assembly, wherein the slide assembly is slidably connected to the body assembly, and the slide assembly is connected to the axle box rotating arm, and the slide assembly drives the axle box rotating arm to rise or fall to install or remove a series of suspension spring groups;

[0021] A door column assembly is connected to the body assembly, the door column assembly is arranged on the upper surface of the bogie, and the door column assembly assists in limiting the bogie.

[0022] In one embodiment, the body assembly comprises:

[0023] A first frame is located above the moving mechanism and the fixing mechanism, and the size of the first frame is adapted to the size of the axle box rotating arm;

[0024] A bottom plate is arranged on the top of the first frame, and the size of the bottom plate is adapted to the size of the first frame;

[0025] A guide mechanism is provided at both ends of the top of the base plate and is used to limit the movement of the slide assembly;

[0026] The connecting mechanism is arranged on both sides of the top of the bottom plate and is used to connect the door column assembly.

[0027] In one embodiment, the first frame includes two transverse beams and at least two longitudinal beams, wherein the two transverse beams and the two longitudinal beams are connected in pairs to form a rectangle.

[0028] In one embodiment, the first frame includes six longitudinal beams, four of which are arranged in parallel inside the rectangle, and two ends of the four longitudinal beams are respectively connected to the inner sides of the two transverse beams.

[0029] In one embodiment, the guide mechanism includes a guide channel steel and two guide square steels, wherein the guide channel steel is arranged at a first end of the top of the bottom plate, and the two guide square steels are arranged at a second end of the top of the bottom plate.

[0030] In one embodiment, the connection mechanism includes four pin lugs, and the four pin lugs are symmetrically arranged in pairs on both sides of the top of the bottom plate.

[0031] In one embodiment, the fixing mechanism includes four hook ears, and the positions of the four hook ears are adapted to the relative positions of the steel spring and the car lift.

[0032] In one embodiment, the slide assembly comprises:

[0033] a second frame, slidably connected to the guide mechanism, the second frame being connected to the axle box rotating arm;

[0034] The up-and-down displacement mechanism is arranged below the second frame and above the bottom plate. The up-and-down displacement mechanism drives the second frame to slide up and down along the guide mechanism, thereby driving the axle box rotating arm to rise or fall.

[0035] In one embodiment, the door pillar assembly includes two sets of door pillar sub-assemblies, and the door pillar sub-assemblies include:

[0036] Two auxiliary load-bearing columns, which are arranged opposite to each other on both sides of the base plate, and the bottoms of the auxiliary load-bearing columns are connected to the connecting mechanism;

[0037] A connecting crossbeam, two ends of which are connected to the tops of the two auxiliary load-bearing columns, is provided on the upper surface of the bogie.

[0038] In one embodiment, a base frame hinge ear is provided at the bottom of the auxiliary load-bearing column, and a crossbeam hinge ear is provided at the top of the auxiliary load-bearing column. A load-bearing column is provided between the base frame hinge ear and the crossbeam hinge ear. The base frame hinge ear is connected to the connecting mechanism, and the crossbeam hinge ear is connected to one end of the connecting beam.

[0039] The utility model provides an auxiliary device for replacing a primary suspension spring group of a bogie, which has the following beneficial effects:

[0040] 1. Avoid damage to the center rubber pile and improve maintenance efficiency:

[0041] In the original operation process, the center pin rubber cushion could become detached due to adhesion or improper operation, and without specialized equipment, it could not be replaced on-site, thus affecting the normal use of the vehicle. However, the replacement auxiliary device is designed to operate directly on the car lift support beam, avoiding the entire bogie from separating and falling, effectively preventing damage to the center rubber cushion caused by improper operation. This not only reduces potential risks during the repair process, but also significantly improves maintenance efficiency, ensuring the rapid recovery and normal use of the vehicle equipment.

[0042] 2. Reduce damage to small parts and improve safety:

[0043] The original process involved numerous steps to separate the bogie from the carbody, which could easily lead to damage to small components (such as the grounding wire, height adjustment valve, and motor power cable), reducing maintenance efficiency and vehicle safety. This replacement assist device allows the primary spring group to be replaced directly on the replacement assist device, eliminating the need to completely separate the bogie from the carbody and thus avoiding potential damage to small components during the separation and lowering process. This not only improves the safety of the maintenance process but also reduces the additional repair time and costs caused by component damage.

[0044] 3. Adapt to different base equipment to improve operation convenience and accuracy:

[0045] In the original operating process, due to the different types of car lifts in different bases, the operating methods and steps for replacing the steel spring group could not be fully matched, posing a safety hazard. The replacement auxiliary device is designed with high flexibility and adjustability, and can be customized and adjusted according to the car lift structure and bogie form of different bases. This not only enables the replacement auxiliary device to adapt to the equipment of different bases, but also improves the convenience and accuracy during operation. At the same time, design elements such as guide channel steel and guide square steel in the replacement auxiliary device also ensure the stability of the slide during the lifting and lowering process, further improving the safety of operation. In addition, the replacement auxiliary device plays a role in precise positioning, guiding and stabilization through the joint cooperation of various components, avoiding the repeated disassembly and adjustment of the spring position, thereby significantly improving maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a structural schematic diagram of a replacement auxiliary device for a bogie primary suspension spring group according to an embodiment of the present utility model;

[0047] Figure 2 This is a perspective structural diagram of a main body assembly according to an embodiment of the present invention;

[0048] Figure 3 This is a schematic structural diagram of a main body assembly according to an embodiment of the present invention;

[0049] Figure 4 This is a schematic diagram of the connection between the second frame and the main body assembly in the slide assembly of one embodiment of the present utility model;

[0050] Figure 5 This is a structural diagram of a door column assembly in one embodiment of the present utility model;

[0051] Figure 6a This is a schematic diagram of the planar structure of an auxiliary load-bearing column according to an embodiment of the present utility model;

[0052] Figure 6b for Figure 6aSchematic diagram of the cross-section structure along AA;

[0053] Figure 7a This is a schematic diagram of the planar structure of the connecting beam according to one embodiment of the present invention;

[0054] Figure 7b for Figure 7a Schematic diagram of the cross-section structure along BB;

[0055] Figure 8 This is a schematic diagram of the installation of an auxiliary device for replacing a primary suspension spring group of a bogie according to an embodiment of the present utility model;

[0056] Figure 9 This is a schematic diagram of the distance between the axle box arm and the lifting pin;

[0057] Figure 10 This is a cross-sectional view of a suspension structure;

[0058] Figure 11 is a schematic diagram of the overall structure of the bogie; and

[0059] Figure 12 It is a structural diagram of the motor, gearbox and coupling.

[0060] Reference numerals

[0061] 1. Main body assembly; 11. Moving mechanism; 12. Fixing mechanism; 13. First frame; 14. Bottom plate; 15. Guide channel steel; 16. Guide square steel; 17. Pin lug; 2. Slide assembly; 21. Second frame; 22. Up and down displacement mechanism; 3. Door column assembly; 31. Auxiliary load-bearing column; 311. Underframe hinge ear; 312. Crossbeam hinge ear; 313. Load-bearing column; 32. Connecting crossbeam; A1. Steel spring; A2. Axle box swing arm; A3. Clamping hoop; A4. Primary vertical shock absorber; A5. Primary vertical stop; B1. Bogie frame; B2. Wheelset; B3. Grounding cable; C. Connecting bolts. DETAILED DESCRIPTION

[0062] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0063] The utility model proposes a replacement auxiliary device for the primary suspension spring group of a bogie, comprising: a body assembly 1, a slide assembly 2 and a door column assembly 3, see Figure 1The bottom of the body assembly 1 is provided with a moving mechanism 11 and a fixing mechanism 12. The body assembly 1 is moved by the moving mechanism 11 and fixed to the car lift by the fixing mechanism 12. The slide assembly 2 is slidably connected to the body assembly 1. The slide assembly 2 is connected to the axle box arm. The slide assembly drives the axle box arm to rise or fall to install or remove the primary suspension spring group. The door column assembly 3 is connected to the body assembly 1. The door column assembly 3 is set on the upper surface of the bogie to assist in limiting the bogie. See Figure 8 .

[0064] The main body component 1 is the main force-bearing structure of the entire replacement auxiliary device, used for movement and installation. At the same time, the compressive stress of the springs in the primary suspension spring group is dispersed to the on-site installation contact surface through the main body component 1, playing a stabilizing role. In this embodiment, Figure 2 and Figure 3 As shown, the body assembly 1 includes: a first frame 13, a base plate 14, a guide mechanism and a connection mechanism.

[0065] The first frame 13 is located above the moving mechanism 11 and the fixed mechanism 12. The size of the first frame 13 is adapted to the size of the axle box arm. The first frame 13 includes two crossbeams and at least two longitudinal beams, wherein the two crossbeams and the two longitudinal beams are connected to form a rectangle. In this embodiment, the first frame preferably includes six longitudinal beams. In addition to the two longitudinal beams forming the rectangle, the other four longitudinal beams are arranged in parallel inside the rectangle. The ends of the four longitudinal beams are connected to the inner sides of the two crossbeams to enhance the stability of the first frame 13. Figure 2 The crossbeam and longitudinal beam are both structural steel pipes. Structural steel pipes are mainly used as steel structural strength members and are the basis for supporting the strength of the entire body assembly. Their length is designed based on the length of the steering axle box arm.

[0066] The moving mechanism 11 and the fixing mechanism 12 are welded to the lower part of the first frame 13. In this embodiment, the fixing mechanism 12 includes four hook ears, and the four hook ears are respectively welded to the bottom of the first frame 13, and the welding position depends on the relative position of the steel spring and the car lift. Its main function is to fix the first frame 13 to the car lift to prevent the first frame 13 from being displaced when the steel spring is installed. According to different bogie forms, its welding position can be changed, and its structure and size also change according to the structure of the car lift. A typical model is selected here for description. The moving mechanism 11 includes two fixed wheels and two moving wheels. Since the first frame 13 is welded from steel structural parts, it has a large mass and is not convenient for lifting and transportation. Therefore, a combination of two fixed wheels and two moving wheels is designed to facilitate its transportation.

[0067] A bottom plate 14 is welded to the top of the first frame 13, and the size of the bottom plate 14 is adapted to the size of the first frame 13. In this embodiment, the bottom plate 14 is a single piece of steel plate, which is welded to the top of the structural steel pipe and serves as a transition plane for welding other components, while also strengthening the structural strength of the main assembly 1.

[0068] The guide mechanism is arranged at both ends of the top of the base plate 14 to limit the movement of the slide assembly 2. In this embodiment, the guide mechanism includes a guide channel steel 15 and two guide square steels 16, one guide channel steel 15 is arranged at the first end of the top of the base plate, and two guide square steels 16 are arranged at the second end of the top of the base plate. The main function of the guide mechanism is to assist the slide assembly 2 in a single up and down movement during the lifting movement after the slide assembly 2 is installed, thereby preventing the slide assembly 2 from tipping over. In addition to guiding, it is also possible to open holes in the guide channel steel 15 and the guide square steel 16 and install limit devices according to actual needs to facilitate the movement limitation of the slide assembly 2.

[0069] The connection mechanism is provided on both sides of the top of the bottom plate 14 for connecting the door column assembly 3. In this embodiment, the connection mechanism is preferably four pin lugs 17, which are symmetrically welded to both sides of the top of the bottom plate 14. Figure 3 The connecting mechanism mainly connects the door column assembly 3 and at the same time bears the spring force exerted on the door column assembly during the compression process of the steel spring. It is one of the important load-bearing parts.

[0070] The slide assembly 2 includes: a second frame 21 and an up-and-down displacement mechanism 22, see Figure 1 .like Figure 4 As shown, the second frame 21 is slidably connected to the guide mechanism and is used to connect to the axlebox arm. The second frame 21 is primarily a welded steel structure and cannot be disassembled. The slide assembly 2 is primarily used to mate with the axlebox arm and, by raising and lowering the axlebox arm, facilitates installation and removal of the primary suspension spring assembly. The slide assembly 2 is one of the main load-bearing components. It is designed with bolt holes for connecting to the axlebox and securing the axlebox arm. A vertical displacement mechanism 22 is located below the second frame 21, above the base plate 14. This mechanism drives the second frame 21 to slide up and down along the guide mechanism, thereby raising and lowering the axlebox arm. In this embodiment, the vertical displacement mechanism 22 is a jack component, serving as the power source for raising and lowering the axlebox arm. The jack is a key component for raising and lowering the axlebox and compressing the springs. The jack can be of different types depending on the strength of the bogie spring force. Examples of jacks include hydraulic jacks, screw jacks, and scissor jacks. A scissor jack is used as a model here. Furthermore, depending on the bogie, its structure and dimensions can vary according to the axlebox structure. The type of structural steel used also varies depending on the spring force. The design model here is for illustrative purposes only.

[0071] The function of the door column assembly 3 is to balance the spring force released after the spring is compressed when the slide assembly 2 lifts the axle box arm. The door column assembly 3 is an auxiliary device, which is set according to the bogie structure. The door column assembly 3 includes two sets of door column sub-assemblies, which include: two auxiliary load-bearing columns 31 and a connecting crossbeam 32, see Figure 5 Two auxiliary load-bearing columns 31 are arranged on opposite sides of the base plate 14, and the bottoms of the auxiliary load-bearing columns 31 are connected to the connecting mechanism. The ends of the connecting crossbeam 32 are connected to the tops of the two auxiliary load-bearing columns 31. The main function of the connecting crossbeam 32 is to be installed on the upper surface of the bogie and serve as an auxiliary limit bogie.

[0072] like Figure 6a 、 Figure 6b 、 Figure 7a and Figure 7b As shown, the auxiliary load-bearing column 31 is provided with a base frame hinge lug 311 at the bottom, and a crossbeam hinge lug 312 at the top. Between the base frame hinge lug 311 and the crossbeam hinge lug 312 is a load-bearing column 313, which serves as the primary load-bearing component of the auxiliary load-bearing column 31. The base frame hinge lug 311 is connected to a connecting mechanism, while the crossbeam hinge lug 312 is connected to one end of the connecting crossbeam 32. In this embodiment, the base frame hinge lug 311 is connected to the pin lug 17 on the base plate 14 via bolts, while the crossbeam hinge lug 312 is connected to the connecting crossbeam 32 in the door column assembly 3 via bolts.

[0073] The specific implementation of the auxiliary device for replacing the primary suspension spring group of a bogie of the utility model is as follows:

[0074] (1) Preparation:

[0075] 1. Stop the train on the maintenance track with a locomotive and install the wheel stoppers.

[0076] 2. Lift the train 800mm off the ground to facilitate disassembly of components.

[0077] 3. Remove the connecting bolts between the motor and the frame (lower end).

[0078] 4. Remove the motor three-phase wire clamps and the junction box end cover.

[0079] 5. Remove the speed sensor and temperature sensor on the axle box of the wheelset of the first-stage suspension spring group to be replaced.

[0080] 6. Remove the ground wire on the other side of the coaxial cable.

[0081] 7. Remove the fasteners at the upper and lower ends of the vertical shock absorber.

[0082] 8. Remove the fastening bolts on the coupling between the motor and the gearbox.

[0083] 9. Remove the fasteners connecting the lower end of the gearbox boom to the gearbox.

[0084] 10. Remove the fasteners at the connection between the gearbox boom and the gearbox boom seat on the frame device.

[0085] 11. Remove the fasteners at the connection between the axle box arm and the frame.

[0086] 12. Remove the wheelset.

[0087] (2) Replacement of auxiliary device installation work:

[0088] According to the installation diagram, Figure 8 Shown: body assembly 1, slide assembly 2 and door column assembly 3

[0089] 1. Install the main assembly 1 on the car lift, and make the fixing mechanism 12 (i.e., hook ear) below the first frame 13 snap into the wing edge of the car lift, and then fix it with the fixing clamp assembly.

[0090] 2. Lift the car lift to X dimension, X = Y (height from the top edge of the bogie to the ground) - 855mm.

[0091] 3. Install door column assembly 3 and auxiliary limiter.

[0092] 4. Install the jack between the second frame 21 and the first frame 13.

[0093] 5. Use a hand jack to lift the second frame 21 until it contacts the axle box arm, and use bolts to fix the second frame 21 and the axle box arm.

[0094] (3) Disassembly and assembly of rigid springs:

[0095] 1. Use the jack to lift the axle box arm. When the axle box arm is slightly away from the lifting pin (Z dimension), refer to Figure 9 .

[0096] 2. Remove the lifting pin, then slowly shake the jack handle in the opposite direction to lower the axle box and release the steel spring until the steel spring is completely restored to a free state.

[0097] 3. After the steel spring has completely recovered to a free state, continue to descend until the steel spring can be released from the steel spring slot on the bogie frame.

[0098] 4. Remove the old steel spring and install the new one.

[0099] 5. Shake the jack handle forward to make the second frame 21 drive the axle box arm to rise. Press the steel spring into the spring groove on the frame.

[0100] 6. Continue to shake the jack handle until the steel spring is compressed. Figure 9 The distance Z between the axle box arm and the lifting pin is Z. When the Z dimension meets the requirement (0<Z<3mm), reset the lifting pin and shake the jack handle in the opposite direction to make the axle box arm contact the lifting pin.

[0101] 7. Remove the connecting bolts between the second frame 21 and the axle box arm.

[0102] 8. Remove door column assembly 3.

[0103] 9. Loosen the fixing clamp assembly and disengage the hook ear on the first frame 13 from the wing edge of the lift.

[0104] 10. Remove the replacement auxiliary device.

[0105] (4) Restoration work:

[0106] Perform reverse operations according to the steps in the preparation work (1) until all parts on the bogie are restored to their original state.

[0107] The utility model provides an auxiliary device for replacing a primary suspension spring group of a bogie, which has the following beneficial effects:

[0108] 1. Avoid damage to the center rubber pile and improve maintenance efficiency:

[0109] In the original operation process, the center pin rubber cushion could become detached due to adhesion or improper operation, and without specialized equipment, it could not be replaced on-site, thus affecting the normal use of the vehicle. However, the replacement auxiliary device is designed to operate directly on the car lift support beam, avoiding the entire bogie from separating and falling, effectively preventing damage to the center rubber cushion caused by improper operation. This not only reduces potential risks during the repair process, but also significantly improves maintenance efficiency, ensuring the rapid recovery and normal use of the vehicle equipment.

[0110] 2. Reduce damage to small parts and improve safety:

[0111] The original process involved numerous steps to separate the bogie from the carbody, which could easily lead to damage to small components (such as the grounding wire, height adjustment valve, and motor power cable), reducing maintenance efficiency and vehicle safety. This replacement assist device allows the primary spring group to be replaced directly on the replacement assist device, eliminating the need to completely separate the bogie from the carbody and thus avoiding potential damage to small components during the separation and lowering process. This not only improves the safety of the maintenance process but also reduces the additional repair time and costs caused by component damage.

[0112] 3. Adapt to different base equipment to improve operation convenience and accuracy:

[0113] In the original operating process, due to the different types of car lifts in different bases, the operating methods and steps for replacing the steel spring group could not be fully matched, posing a safety hazard. The replacement auxiliary device is designed with high flexibility and adjustability, and can be customized and adjusted according to the car lift structure and bogie form of different bases. This not only enables the replacement auxiliary device to adapt to the equipment of different bases, but also improves the convenience and accuracy during operation. At the same time, design elements such as guide channel steel and guide square steel in the replacement auxiliary device also ensure the stability of the slide during the lifting and lowering process, further improving the safety of operation. In addition, the replacement auxiliary device plays a role in precise positioning, guiding and stabilization through the joint cooperation of various components, avoiding the repeated disassembly and adjustment of the spring position, thereby significantly improving maintenance efficiency.

[0114] It should be noted that, unless otherwise clearly stipulated and limited, the words "install", "connect", "connect", "set" and similar terms used in the description of this application should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection between two components. Technical personnel in the field can understand their specific meanings in this application according to the specific circumstances.

[0115] The above embodiments are merely further explanations of the present invention and are not intended to limit the present invention in any other manner. The present invention may have many other embodiments. Without departing from the spirit and substance of the present invention, those skilled in the art may make various modifications and variations based on the present invention, and such modifications and variations shall fall within the scope of protection of the present invention.

Claims

1. A bogie primary suspension spring assembly replacement auxiliary device, characterized in that: include: A body component, wherein a moving mechanism and a fixing mechanism are provided at the bottom of the body component, the body component is moved by the moving mechanism, and the body component is fixed to the vehicle lift by the fixing mechanism; A slide assembly is slidably connected to the body assembly, and the slide assembly is connected to the axle box arm. The slide assembly drives the axle box arm to rise or fall to install or remove a series of suspension spring groups; A door column assembly is connected to the body assembly, the door column assembly is arranged on the upper surface of the bogie, and the door column assembly assists in limiting the bogie.

2. The auxiliary device for replacing the primary suspension spring group of a bogie according to claim 1, characterized in that: The body assembly includes: A first frame is located above the moving mechanism and the fixing mechanism, and the size of the first frame is adapted to the size of the axle box rotating arm; A bottom plate is arranged on the top of the first frame, and the size of the bottom plate is adapted to the size of the first frame; A guide mechanism is provided at both ends of the top of the base plate and is used to limit the movement of the slide assembly; The connecting mechanism is arranged on both sides of the top of the bottom plate and is used to connect the door column assembly.

3. The auxiliary device for replacing the primary suspension spring group of a bogie according to claim 2, characterized in that: The first frame includes two transverse beams and at least two longitudinal beams, wherein the two transverse beams and the two longitudinal beams are connected in pairs to form a rectangle.

4. The auxiliary device for replacing the primary suspension spring assembly of a bogie according to claim 3, characterized in that: The first frame includes six longitudinal beams, four of which are arranged in parallel inside the rectangle, and two ends of the four longitudinal beams are respectively connected to the inner sides of the two cross beams.

5. The auxiliary device for replacing the primary suspension spring group of a bogie according to claim 2, characterized in that: The guide mechanism includes a guide channel steel and two guide square steels, wherein the guide channel steel is arranged at a first end of the top of the bottom plate, and the two guide square steels are arranged at a second end of the top of the bottom plate.

6. The auxiliary device for replacing the primary suspension spring assembly of a bogie according to claim 2, characterized in that: The connecting mechanism includes four pin shaft ears, and the four pin shaft ears are symmetrically arranged in pairs on both sides of the top of the bottom plate.

7. The auxiliary device for replacing the primary suspension spring assembly of a bogie according to claim 1, characterized in that: The fixing mechanism includes four hook ears, and the positions of the four hook ears are adapted to the relative positions of the steel spring and the car lift.

8. The auxiliary device for replacing the primary suspension spring assembly of a bogie according to claim 2, characterized in that: The slide assembly comprises: a second frame, slidably connected to the guide mechanism, the second frame being connected to the axle box rotating arm; The up-and-down displacement mechanism is arranged below the second frame and above the bottom plate. The up-and-down displacement mechanism drives the second frame to slide up and down along the guide mechanism, thereby driving the axle box rotating arm to rise or fall.

9. The auxiliary device for replacing the primary suspension spring assembly of a bogie according to claim 2, characterized in that: The door column assembly includes two groups of door column sub-assemblies, and the door column assembly includes: Two auxiliary load-bearing columns, which are arranged opposite to each other on both sides of the base plate, and the bottoms of the auxiliary load-bearing columns are connected to the connecting mechanism; A connecting crossbeam, two ends of which are connected to the tops of the two auxiliary load-bearing columns, is provided on the upper surface of the bogie.

10. The auxiliary device for replacing the primary suspension spring group of a bogie according to claim 9, characterized in that: A base frame hinged ear is provided at the bottom of the auxiliary load-bearing column, and a crossbeam hinged ear is provided at the top of the auxiliary load-bearing column. A load-bearing column is provided between the base frame hinged ear and the crossbeam hinged ear. The base frame hinged ear is connected to the connecting mechanism, and the crossbeam hinged ear is connected to one end of the connecting beam.

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