Lifting tool for metro vehicle maintenance

Abstract

The utility model discloses a lifting tool for metro vehicle maintenance, which relates to the technical field of metro vehicle maintenance and comprises a fixed pedestal and limiting mechanisms, a lifting frame is mounted in the center of the interior of the fixed pedestal, and the limiting mechanisms are symmetrically mounted on the left side and the right side of a maintenance platform. Supporting assemblies are symmetrically mounted on the left and right sides of the bottom of the maintenance platform. According to the lifting tool for metro vehicle maintenance, the limiting mechanisms are symmetrically mounted on the left side and the right side of the maintenance platform correspondingly, so that the situation that maintenance and detection are affected and potential safety hazards are reduced due to the fact that unnecessary displacement occurs when a compartment of a metro vehicle stops on the surface of a parking track can be avoided to the maximum extent; the lifting frame, the supporting assembly and the stable hydraulic column are arranged between the fixed pedestal and the maintenance platform, so that it can be guaranteed to the maximum extent that when a metro vehicle is parked on a stop rail, a stable enough lifting adjustment and structural supporting structure is achieved, and maintenance personnel can conveniently overhaul the bottom of the vehicle.

Description

Technical Field

[0001] The utility model relates to the technical field of subway vehicle maintenance, in particular to a lifting tool for subway vehicle maintenance. Background Art

[0002] Subway is a type of urban rail transit line system, which refers to the fast, large-capacity, electric-powered rail transit built in the city. Trains run on fully enclosed lines. Lines in the central city are basically set up in underground tunnels, and lines outside the central city are generally set up on viaducts or on the ground.

[0003] For example, the utility model with application number 202220132144.2 discloses a lifting device for subway vehicle maintenance. The lifting device can realize rapid lifting and lowering operations of subway vehicles by means of a base frame, support columns, a first reciprocating screw, a first movable shaft, a lifting plate, a lifting platform, a second movable shaft, a second reciprocating screw, a rotating disk and a fitting pad. In actual use, the staff first places the subway vehicle that needs to be repaired between the support columns on the surface of the base frame. At this time, the rotating disk is turned to make the first reciprocating screw inside the support column rotate stably. However, the lifting device similar to the one in the above-mentioned document is difficult to ensure sufficient structural stability and support during the lifting of the vehicle body. At the same time, this device requires external lifting equipment to cooperate with the operation, which makes the operation relatively complicated and dangerous.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a lifting tool for subway vehicle maintenance is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a lifting tool for subway vehicle maintenance to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lifting tool for subway vehicle maintenance, including a fixed pedestal and a limiting mechanism, a lifting frame is installed in the center of the fixed pedestal, and a maintenance platform is arranged on the top of the lifting frame, and a parking track is installed in the middle of the maintenance platform, the limiting mechanism is symmetrically installed on the left and right sides of the maintenance platform, and support components are symmetrically installed on the left and right sides of the bottom of the maintenance platform, and a stable hydraulic column is installed on the side of the support component away from the vertical central axis of the maintenance platform, the limiting mechanism includes a fixed pile, an electric shaft, a limiting rod and a clamping block, the electric shaft is installed on the top of the fixed pile, and the side of the electric shaft away from the fixed pile is connected to the limiting rod, and a clamping block is installed on the bottom of the side of the limiting rod away from the electric shaft.

[0007] Further, the lifting frame includes a storage base, a driving motor, and a bidirectional lead screw. Driving motors are symmetrically installed on the left and right sides of the storage base, and the power output ends of the driving motors are installed with bidirectional lead screws through couplings.

[0008] Further, the lifting frame further includes threaded bearing tubes, a folding lifting frame, and a hydraulic cylinder. Threaded bearing tubes are installed on the surfaces of the left and right ends of the bidirectional lead screw, and the tops of the threaded bearing tubes are connected to the folding lifting frame.

[0009] Further, the threaded bearing tubes are threadedly connected to the bidirectional lead screw, and the top of the folding lifting frame is connected to the bottom of the maintenance table.

[0010] Further, the limiting rod and the clamping block are integrally structured, and the surface structure of the bottom of the clamping block matches the surface structure of the top of the parking track.

[0011] Further, the support assembly includes a support frame, a first hydraulic rod, a second hydraulic rod, and a spring buffer frame. The middle section of the bottom of the support frame is pivotally connected to the first hydraulic rod, and the top of the end of the support frame away from the first hydraulic rod is pivotally connected to the second hydraulic rod. Moreover, a spring buffer frame is obliquely supported between the second hydraulic rod and the support frame.

[0012] Further, the first hydraulic rod and the support frame are connected in an "inverted V" structure, and the support frame and the second hydraulic rod are connected in an "L" structure.

[0013] Further, the stable hydraulic columns are symmetrically installed on the left and right sides of the bottom of the vertical maintenance table, and the fixed pedestal is arranged in a "U" shape.

[0014] The present utility model provides a lifting tool for subway vehicle maintenance, having the following beneficial effects:

[0015] 1. In the present utility model, limiting mechanisms are symmetrically installed at the four diagonals of the maintenance table. Among them, through the left - right rotation adjustment in the vertical direction provided by the electric rotating shaft, when the limiting mechanism needs to be used, the electric rotating shaft can drive the limiting rod and the clamping block to rotate and adjust, so that the clamping block can be buckled on the surface of the parking track, thereby providing a clamping and limiting effect at the front and rear wheels of the subway vehicle parked at the central position of the parking track, preventing it from moving and causing unnecessary problems. When it is necessary to drive the carriage of the entire subway vehicle out of the entire maintenance table, only need to rotate the electric rotating shaft at the top of the fixed pile to drive the limiting rod and the clamping block to swing, separate their structure from the parking track, and make structural avoidance.

[0016] 2. The utility model, through the support components and lifting frames arranged on the left and right sides of the bottom of the maintenance platform, the bidirectional screw rod is driven by a driving motor to perform axial rotation in the horizontal direction, so that the threaded bearing tubes at the left and right ends thereof translate along their surfaces, driving the folding lifting frame connected to the top of the threaded bearing tube to extend and retract up and down in the vertical direction, and at the same time, with the help of the hydraulic cylinder, the top maintenance platform and the parking track are lifted or lowered in the vertical direction, and through the support components on the left and right sides of the lifting frame, the structural extension and contraction of the first hydraulic rod and the second hydraulic rod are utilized to cooperate with the structural support of the support frame, which can further assist the lifting frame in providing stable lifting adjustment for the maintenance platform, and with the help of the stable hydraulic column, when the maintenance carriage is parked on the parking track, the entire maintenance platform has a stable structural activity of remaining lowering. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the side view of the structure of a bracket body of a lifting tool for subway vehicle maintenance according to the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of a limiting mechanism of a lifting tool for subway vehicle maintenance according to the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of a lifting frame of a lifting tool for subway vehicle maintenance according to the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of a support assembly of a lifting tool for subway vehicle maintenance according to the utility model;

[0021] Figure 5 The utility model is a schematic diagram of the three-dimensional structure of a limit rod and a clamping block of a lifting tool for subway vehicle maintenance.

[0022] In the figure: 1. fixed base; 2. lifting frame; 201. storage base; 202. driving motor; 203. bidirectional screw rod; 204. threaded bearing tube; 205. folding lifting frame; 206. hydraulic cylinder; 3. maintenance platform; 4. parking track; 5. limiting mechanism; 501. fixed pile; 502. electric shaft; 503. limiting rod; 504. block; 6. supporting assembly; 601. supporting frame; 602. first hydraulic rod; 603. second hydraulic rod; 604. spring buffer frame; 7. stable hydraulic column. DETAILED DESCRIPTION

[0023] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0024] like Figures 1 to 4As shown, a lifting tool for subway vehicle maintenance includes a fixed pedestal 1 and a limiting mechanism 5, a lifting frame 2 is installed in the center of the fixed pedestal 1, and a maintenance platform 3 is arranged on the top of the lifting frame 2, and a parking track 4 is installed in the middle of the maintenance platform 3, the limiting mechanism 5 is symmetrically installed on the left and right sides of the maintenance platform 3, and support components 6 are symmetrically installed on the left and right sides of the bottom of the maintenance platform 3, and a stable hydraulic column 7 is installed on the side of the support component 6 away from the vertical central axis of the maintenance platform 3, the limiting mechanism 5 includes a fixed pile 501, an electric shaft 502, a limiting rod 503 and a clamping block 504, the electric shaft 502 is installed on the top of the fixed pile 501, and the side of the electric shaft 502 away from the fixed pile 501 is connected to the limiting rod 503, and a clamping block 504 is installed at the bottom of the side of the limiting rod 503 away from the electric rotating shaft 502, the limiting rod 503 and the clamping block 504 are an integral structure, and the bottom surface structure of the clamping block 504 matches the top surface structure of the parking track 4. The limiting mechanisms 5 are symmetrically installed at the four diagonals of the maintenance platform 3, wherein the left and right rotation adjustability in the vertical direction provided by the electric rotating shaft 502 can drive the limiting rod 503 and the clamping block 504 to rotate and adjust when the limiting mechanism 5 is needed, so that the clamping block 504 is buckled on the surface of the parking track 4, thereby providing a clamping and limiting effect at the front and rear wheels of the subway vehicle parked at the center of the parking track 4.

[0025] The lifting frame 2 includes a storage base 201, a driving motor 202 and a bidirectional lead screw 203. Driving motors 202 are symmetrically installed on the left and right sides of the storage base 201, and the power output ends of the driving motors 202 are installed with bidirectional lead screws 203 through couplings. The lifting frame 2 further includes threaded bearing tubes 204, folding lifting frames 205 and hydraulic cylinders 206. Threaded bearing tubes 204 are installed on the surfaces of the left and right ends of the bidirectional lead screw 203, and folding lifting frames 205 are connected to the tops of the threaded bearing tubes 204. The threaded bearing tubes 204 are in threaded connection with the bidirectional lead screw 203. The tops of the folding lifting frames 205 are connected to the bottom of the maintenance table 3. The support assembly 6 includes a support frame 601, a first hydraulic rod 602, a second hydraulic rod 603 and a spring buffer frame 604. The middle section of the bottom of the support frame 601 is axially connected with the first hydraulic rod 602, and the top of one end of the support frame 601 away from the first hydraulic rod 602 is axially connected with the second hydraulic rod 603. Moreover, a spring buffer frame 604 is obliquely supported between the second hydraulic rod 603 and the support frame 601. The first hydraulic rod 602 and the support frame 601 are connected in an "inverted V" structure, and the support frame 601 and the second hydraulic rod 603 are connected in an "L" structure. The stable hydraulic columns 7 are symmetrically installed on the left and right sides of the bottom of the vertical maintenance table 3. The fixed pedestal 1 is arranged in a "U" shape. By driving the bidirectional lead screw 203 to rotate axially in the horizontal direction by the driving motor 202, the threaded bearing tubes 204 at its left and right ends are translated along its surface, driving the folding lifting frames 205 connected to the tops of the threaded bearing tubes 204 to expand and contract vertically. At the same time, with the help of the hydraulic cylinder 206, the top maintenance table 3 and the parking track 4 are lifted or lowered vertically. And through the support assemblies 6 on the left and right sides of the lifting frame 2, by using the structural expansion and contraction of the first hydraulic rod 602 and the second hydraulic rod 603, and cooperating with the structural support of the support frame 601, it can further assist the lifting frame 2 to provide stable lifting adjustment for the maintenance table 3.

[0026] In summary, as Figures 1 to 4 shown, when using this lifting tooling for subway vehicle maintenance, first, the parking track 4 on the surface of the maintenance table 3 is docked with the external track to facilitate the entry and docking of the subway carriages. After the docking is secure, at this time, the limit mechanism 5 is activated. Driven by the electric rotating shaft 502 at the top of the fixed pile 501, the limit rod 503 with a chuck 504 connected to the bottom of one end rotates until the chuck 504 is buckled on the surface of the parking track 4, thereby restricting the rolling of the wheel structure;

[0027] Then, the lifting frame 2, the supporting assembly 6 and the stable hydraulic column 7 will simultaneously lift the maintenance platform 3 in the vertical direction, wherein the driving motors 202 on the left and right sides of the storage base 201 start to operate, and drive the bidirectional screw rod 203 inside the storage base 201 to perform axial rotation in the horizontal direction, so that the threaded bearing tube 204 threadedly connected at both ends thereof starts to translate on its surface, thereby driving the folding lifting frame 205 connected to the top of the threaded bearing tube 204 to unfold the structure and lift it in the vertical direction, and at the same time, the hydraulic cylinder 206 will also provide a synchronous uniform vertical pushing support force from the maintenance platform 3;

[0028] During this process, the first hydraulic rod 602 on the bottom side of the support frame 601 and the second hydraulic rod 603 on the top side thereof are structurally extended and retracted, thereby structurally stretching the entire support assembly 6. At the same time, the stabilizing hydraulic column 7 is also structurally extended and retracted in the vertical direction, thereby vertically lifting the maintenance platform 3 on which the subway car is parked, so that maintenance personnel can inspect the bottom of the vehicle.

[0029] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A lifting tool for subway vehicle maintenance, comprising a fixed pedestal (1) and a limiting mechanism (5), characterized in that: Inside the central part of the fixed pedestal (1), a lifting frame (2) is installed, and a maintenance table (3) is arranged at the top of the lifting frame (2). Moreover, a parking track (4) is installed in the middle of the maintenance table (3). The limiting mechanisms (5) are symmetrically installed on the left and right sides of the maintenance table (3), and support components (6) are symmetrically installed on the left and right sides at the bottom of the maintenance table (3). Moreover, a stable hydraulic cylinder (7) is installed on one side of the support component (6) away from the vertical central axis of the maintenance table (3). The limiting mechanism (5) includes a fixed pile (501), an electric rotating shaft (502), a limiting rod (503), and a clamping block (504). The electric rotating shaft (502) is installed at the top of the fixed pile (501), and the limiting rod (503) is connected to the side of the electric rotating shaft (502) away from the fixed pile (501). Moreover, the clamping block (504) is installed at the bottom of the side of the limiting rod (503) away from the electric rotating shaft (502).

2. A subway vehicle maintenance lifting tool according to claim 1, characterized in that: The lifting frame (2) includes a storage base (201), a driving motor (202), and a bidirectional lead screw (203). The driving motors (202) are symmetrically installed on the left and right sides of the storage base (201), and the power output end of the driving motor (202) is installed with the bidirectional lead screw (203) through a coupling.

3. A lifting tool for subway vehicle maintenance according to claim 2, characterized in that: The lifting frame (2) further includes a threaded bearing tube (204), a folding lifting frame (205), and a hydraulic cylinder (206). The threaded bearing tubes (204) are installed on the surfaces of the left and right ends of the bidirectional lead screw (203), and the folding lifting frame (205) is connected to the top of the threaded bearing tube (204).

4. The subway vehicle maintenance lifting tool according to claim 3, characterized in that: The threaded bearing tube (204) is in threaded connection with the bidirectional lead screw (203), and the top of the folding lifting frame (205) is connected to the bottom of the maintenance table (3).

5. The subway vehicle maintenance lifting tool according to claim 1, characterized in that: The limiting rod (503) and the clamping block (504) are integrally structured with each other, and the bottom surface structure of the clamping block (504) matches the top surface structure of the parking track (4).

6. The subway vehicle maintenance lifting tool according to claim 1, characterized in that: The support component (6) includes a support frame (601), a first hydraulic rod (602), a second hydraulic rod (603), and a spring buffer frame (604). The middle section of the bottom of the support frame (601) is axially connected with the first hydraulic rod (602), and the top of the end of the support frame (601) away from the first hydraulic rod (602) is axially connected with the second hydraulic rod (603). Moreover, a spring buffer frame (604) is obliquely supported between the second hydraulic rod (603) and the support frame (601).

7. A subway vehicle maintenance lifting tool according to claim 6, characterized in that: The first hydraulic rod (602) is connected to the support frame (601) in an "inverted V" - shaped structure, and the support frame (601) is connected to the second hydraulic rod (603) in an "L" - shaped structure.

8. The subway vehicle maintenance lifting tool according to claim 1, characterized in that: The stable hydraulic cylinders (7) are symmetrically installed on the left and right sides at the bottom perpendicular to the maintenance table (3), and the fixed pedestal (1) is arranged in a "U" - shaped structure.

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