CN215711493U

CN215711493U - Combined car lifting jack

Info

Publication number: CN215711493U
Application number: CN202121964874.0U
Authority: CN
Inventors: 黎莎; 石磊
Original assignee: Beijing Railway Institute of Mechanical and Electrical Engineering Group Co Ltd
Current assignee: Beijing Railway Institute of Mechanical and Electrical Engineering Group Co Ltd
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2022-02-01
Anticipated expiration: 2031-08-20

Abstract

The utility model belongs to the technical field of auxiliary equipment for maintenance of subway vehicles, and discloses a combined car lifting machine, which comprises a lifting assembly and two supporting assemblies, wherein the lifting assembly is arranged in a foundation pit, a car body is lifted to an overhauling position through the lifting assembly, the two supporting assemblies support the car body to keep the height required by the car body, and a maintainer can conveniently maintain the car body.

Description

Combined car lifting jack

Technical Field

The utility model relates to the technical field of auxiliary equipment for maintaining subway vehicles, in particular to a combined car lifting jack.

Background

The fixed car lifting jack of subway is a necessary large-scale equipment that can go on lifting car body when the subway vehicle overhauls the operation, can lift car body and bogie simultaneously when the car lifting operation, all submerge underground after the car lifting is finished, has obtained wide application in every vehicle overhaul section on the world.

Each group of units of the subway fixed car lifting jack generally has 2 bogie lifting devices and 4 car body lifting devices. The vehicle bogie lifting device is used for lifting the whole body of a vehicle and the bogie to the corresponding height before overhauling, a worker can split the vehicle body and the bogie at the bottom of the vehicle body, the bogie lifting device is used for lifting the bogie of a subway to be overhauled, and the vehicle body lifting device is used for lifting the subway vehicle body to be overhauled. In most cases, the vehicle body lifting device only plays a supporting role and does not need to have a lifting function, but the bogie lifting device and the vehicle body lifting device are arranged in the foundation pit, and the depth of the foundation pit needs to meet the stroke of the bogie lifting device and the vehicle body lifting device, so that when the vehicle body lifting device is lifted from the ground, a part of the stroke is ineffective when the vehicle body lifting device is supported to the position of the vehicle body, the lifting time is wasted, and the construction difficulty of the foundation pit is large.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a combined type car lifting jack, which reduces the difficulty and the depth of foundation pit construction and improves the working efficiency of maintenance.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a modular car lifting jack, includes multiunit car lifting jack, and above-mentioned car lifting jack of every group includes:

the lifting assembly is arranged in the foundation pit and can lift the vehicle body to an overhauling position along the lifting channel;

the lifting assembly can lift the vehicle body to the maintenance position through the space between the two supporting assemblies in the passing state, and the two supporting assemblies can replace the lifting assembly to support the vehicle body to the maintenance position in the supporting state.

Preferably, the support assembly includes an outer sleeve, an inner sleeve and a support block, the outer sleeve is fixedly disposed on the platform, one end of the inner sleeve is fixedly connected to the support block, and the other end of the inner sleeve is rotatably connected to the outer sleeve, the inner sleeve drives the support block to leave the lifting channel in the passing state, and the inner sleeve drives the support block to rotate to extend into the lifting channel in the supporting state.

Preferably, a spiral groove is formed in a wall of the outer sleeve, a slider is disposed on the inner sleeve, the slider is slidably connected to the spiral groove, and when the support block leaves the lifting passage, the inner sleeve moves toward the lifting assembly by cooperation of the slider and the spiral groove.

Preferably, the spiral grooves are provided in one-to-one correspondence with the sliders, and two of the spiral grooves are provided, and the two sliders are slidably connected to the two spiral grooves, respectively.

Preferably, the support assembly further includes a driving motor, an external gear is provided at an output end of the driving motor, an internal gear sleeve is provided on the internal sleeve, and the external gear and the internal gear sleeve are engaged with each other.

Preferably, the driving motor is fixedly installed at one side of the table, and the outer sleeve is fixedly installed at the other side of the table.

Preferably, the support member further includes a lubricating sleeve interposed between the outer sleeve and the inner sleeve.

Preferably, the lubricating sleeve is an oil-retaining bearing.

Preferably, the number of the lubricating sleeves is two, and the two lubricating sleeves are provided in the outer sleeve at an interval.

Preferably, an end cover is arranged at one end of the outer sleeve close to the supporting block, and one end of the inner sleeve penetrates through the end cover and is connected to the supporting block.

The utility model has the beneficial effects that:

according to the combined type car lifting jack provided by the utility model, the car body is lifted to the maintenance position through the lifting component, the two supporting components support the car body to keep the height required by the car body, so that maintenance personnel can conveniently maintain the car body, the lifting component is arranged in the foundation pit, and the supporting components are arranged on the platforms at the two sides of the car body outside the foundation pit, so that the depth of the foundation pit only needs to be ensured to be capable of accommodating the lifting component, the deep foundation construction of underground civil engineering operation is reduced, the construction difficulty and depth of the foundation pit are greatly reduced, no invalid stroke exists in the lifting process of the lifting component, and the maintenance working efficiency is improved.

In the actual use process, every group automobile body unit needs two sets of car lifting device at least to guarantee stably to lift and support the automobile body, improve work efficiency and security.

Drawings

Fig. 1 is a schematic view of a support assembly of a combined car lifting jack supporting a car body according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a support assembly of a combined car lifting jack according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an outer sleeve and an inner sleeve of a support assembly of a combined car lifting jack according to an embodiment of the present invention.

In the figure:

1-a lifting assembly;

2-a support assembly; 21-an outer sleeve; 211-helical groove; 212-end cap; 22-inner sleeve; 221-a slider; 222-an inner gear sleeve; 23-a support block; 24-a drive motor; 241-an external gear; 25-lubricating sleeve.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar parts throughout or parts having the same or similar functions. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediary, a connection between two elements, or an interaction between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but with another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

In the conventional work mode, a vehicle body lifting device is used for supporting a vehicle body after a bogie is lifted, so that the bogie can be dropped using a vehicle (bogie) lifting device. The travel of the bogie lifting device is 1.6m, and the travel of the vehicle body lifting device is about 2.6 m. But the subway car body lifting device is lifted from the ground, and is supported to the car body position by almost all ineffective idle strokes, including that the car lifting point is 1m away from the ground and the bogie lifting device lifts the car body by 1.6 m. Many times, the vehicle body lifting device only plays a supporting role in more times and does not need the loading lifting function.

Another disadvantage of the car body lifting device is that the fixed car lifting jack has a complex underground structure, a foundation pit has a large floor area, and the construction depth is a deep foundation pit with more than 6 m. If the underground section only contains the truck lifting device, the construction depth only needs to reach 3.2 m. The depth of foundation construction and the construction difficulty and cost are greatly reduced.

In order to achieve the above purpose, as shown in fig. 1, the present invention provides a combined car lifting machine, which includes a plurality of car lifting devices, and each car body unit includes at least two or more groups of car lifting devices. Every group's car lifting device is including lifting component 1 and two supporting component 2, and lifting component 1 sets up in the foundation ditch, and can lift the automobile body to the maintenance position along lifting channel. It will be appreciated that the excavation is an underground space excavated below the ground to provide an environment for installation of the lifting assembly 1. The two supporting components 2 are fixedly arranged on the platforms on the two sides of the vehicle body, and it can be understood that the supporting components 2 suspended on the platforms do not influence the dismounting work of workers on the vehicle body. Specifically, the platform is a steel structure platform, and is characterized in that the design is flexible, the steel structure platform meeting the site requirements and the use function requirements can be designed and manufactured according to different field conditions, and the steel structure platform is widely used nowadays. The supporting components 2 have a passing state and a supporting state, and in the passing state, the lifting component 1 can lift the vehicle body to pass between the two supporting components 2 to an overhauling position; in the supporting state, the two supporting assemblies 2 can replace the lifting assembly 1 to support the vehicle body at the maintenance position.

According to the combined type car lifting jack provided by the utility model, the car body is lifted to the maintenance position through the lifting assembly 1, the two supporting assemblies 2 support the car body to keep the height required by the car body, and maintenance personnel can conveniently maintain the car body, because the lifting assembly 1 is arranged in the foundation pit, and the supporting assemblies 2 are arranged on the platforms at the two sides of the car body outside the foundation pit, the depth of the foundation pit only needs to be ensured to be capable of accommodating the lifting assembly 1, the deep foundation construction of underground civil engineering operation is reduced, the construction difficulty and depth of the foundation pit are greatly reduced, no invalid stroke exists in the lifting process of the lifting assembly 1, and the maintenance working efficiency is improved.

Specifically, as shown in fig. 2, the support assembly 2 includes an outer sleeve 21, an inner sleeve 22, and a support block 23. Wherein, outer sleeve 21 is fixed to be set up on the platform, provides the support for the whole mechanism. Optionally, the outer sleeve 21 is a hollow cylindrical structure. Further, one end of the inner sleeve 22 is fixedly connected with the supporting block 23, and the other end is rotatably connected with the outer sleeve 21, so that the supporting block 23 can leave or extend into the lifting channel. In an alternative embodiment, the inner sleeve 22 and the support block 23 may be fixedly connected by welding. Specifically, in the passing state, the inner sleeve 22 can drive the supporting block 23 to rotate away from the lifting channel so as to avoid the vehicle body; in the supporting state, the inner sleeve 22 can drive the supporting block 23 to rotate and extend into the lifting channel to support the vehicle body, so that the vehicle body is supported at the maintenance position.

Optionally, with continued reference to fig. 2, in order to make the inner sleeve 22 and the outer sleeve 21 rotationally flexible and reduce wear, the support assembly 2 further comprises a lubrication sleeve 25, the lubrication sleeve 25 being sandwiched between the outer sleeve 21 and the inner sleeve 22.

Preferably, the lubrication sleeve 25 may optionally include bearings to allow more rotational flexibility and lower maintenance costs. It can be understood that the oil-retaining bearing can be used for a long working time without adding lubricating oil, and is particularly suitable for a working environment which is not easy to lubricate.

Preferably, in order to make the overall structure more reasonable and improve the service life of the support assembly 2, two lubricating sleeves 25 are provided, and two lubricating sleeves 25 and one lubricating sleeve are provided in the outer sleeve 21.

Further, with continued reference to fig. 2, an end cap 212 is disposed on the outer sleeve 21 near one end of the support block 23, and the end cap 212 can limit the lubricant sleeve 25 near one end of the support block 23 from coming out of the outer sleeve 21. As a detailed design, the end cap 212 is provided with a through hole, and one end of the inner sleeve 22 passes through the through hole to be fixedly connected with the supporting block 23.

More specifically, referring to fig. 2 to 3, the support assembly 2 further includes a driving motor 24, and in order to facilitate rotation of the inner sleeve 22 with respect to the outer sleeve 21, an output end of the driving motor 24 is provided with an external gear 241, and the inner sleeve 22 is provided with an internal gear sleeve 222, and the external gear 241 and the internal gear sleeve 222 are engaged with each other. It will be appreciated that upon receiving the rotation signal from the drive motor 24, the output shaft rotates to drive the outer gear 241, which in turn drives the inner gear sleeve 222 to rotate the inner sleeve 22.

More specifically, in order to make the installation of the driving motor 24 more convenient and the structure more reasonable, the driving motor 24 is fixedly arranged on one side of the platform, and the outer sleeve 21 is fixedly arranged on the other side of the platform. It will be appreciated that the output shaft of the drive motor 24 can extend through the platform into the outer sleeve 21. In this embodiment, one end of the outer sleeve 21 is provided with a flange, and the outer sleeve 21 is fixedly arranged at the other side of the platform through the flange.

Optionally, with continued reference to fig. 2-3, the cylindrical wall of the outer sleeve 21 is provided with a spiral groove 211, preferably a machined groove with a pitch and a spiral angle of 180 ° of the spiral groove 211. Further, the inner sleeve 22 is provided with a slider 221, and the slider 221 is slidably connected in the spiral groove 211 to prevent the inner sleeve 22 from coming off the outer sleeve 21. Further, when the inner sleeve 22 rotates, the inner sleeve 22 can be lifted along the axis direction of the inner sleeve, and the inner sleeve 22 has a lifting function when rotating, so that the supporting block 23 can extend into the bottom of the vehicle body more easily to support the vehicle body, the supporting is more accurate, and the phenomenon that the supporting block 23 cannot extend into the vehicle bottom or is too high to cause the too large distance between the supporting block 23 and the vehicle bottom due to too low lifting of the vehicle body is avoided. In an alternative embodiment, the slider 221 is welded to the outer wall of the inner sleeve 22. Illustratively, when the supporting block 23 leaves the lifting channel, the inner sleeve 22 moves towards the lifting assembly 1 under the cooperation of the slider 221 and the spiral groove 211, so that the supporting block 23 is separated from the vehicle body more easily; when the supporting block 23 extends into the lifting channel, the inner sleeve 22 moves towards the vehicle body under the cooperation of the slider 221 and the spiral groove 211, so that the supporting block 23 supports the vehicle body more stably.

In an alternative embodiment, the lifting stroke of the supporting block 23 is 10-20mm, and the supporting assembly 2 has good self-locking performance because the diameter of the outer sleeve 21 is relatively large and the pitch of the spiral groove 211 is relatively small.

Further, referring to fig. 3, in order to connect the inner sleeve 22 and the outer sleeve 21 more firmly, the two screw grooves 211 and the two sliding blocks 221 are arranged in one-to-one correspondence, and the two sliding blocks 221 are respectively connected in the two screw grooves 211 in a sliding manner. It can be understood that the two sliders 221 work together with the two spiral grooves 211 to make the supporting force stronger.

In this embodiment, in the passing state, the supporting blocks 23 are located outside the lifting passage as a whole, and after the lifting assembly 1 lifts the vehicle body to the maintenance position, the driving motor 24 drives the inner sleeve 22 to rotate by 90 °, so that the supporting blocks 23 on both sides rotate by 90 ° toward the vehicle body to the bottom of the vehicle body respectively to support the vehicle body.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a modular car lifting jack which characterized in that, includes multiunit car lifting jack device, every group car lifting jack device includes:

the lifting assembly (1) is arranged in the foundation pit, and can lift the vehicle body to an overhauling position along the lifting channel;

two supporting components (2), two supporting components (2) fixed set up in on the platform of the both sides of automobile body, supporting component (2) have through state and holding state under the through state, lifting component (1) can lift the automobile body passes through two arrive between supporting component (2) overhaul the position under the holding state, two supporting component (2) can replace lifting component (1) will the automobile body support in overhaul the position.

2. The combined car lifting jack according to claim 1, wherein the support assembly (2) comprises an outer sleeve (21), an inner sleeve (22) and a support block (23), the outer sleeve (21) is fixedly arranged on the platform, one end of the inner sleeve (22) is fixedly connected with the support block (23), the other end of the inner sleeve (22) is rotatably connected with the outer sleeve (21), the inner sleeve (22) drives the support block (23) to leave the lifting channel in the passing state, and the inner sleeve (22) drives the support block (23) to rotate and extend into the lifting channel in the supporting state.

3. The combined car lifting jack according to claim 2, wherein a spiral groove (211) is formed in the wall of the outer sleeve (21), a sliding block (221) is arranged on the inner sleeve (22), the sliding block (221) is slidably connected in the spiral groove (211), and when the supporting block (23) leaves the lifting channel, the inner sleeve (22) moves towards the lifting assembly (1) under the cooperation effect of the sliding block (221) and the spiral groove (211).

4. The combined type car lifting jack according to claim 3, wherein the spiral grooves (211) and the sliding blocks (221) are arranged in a one-to-one correspondence manner, two sliding blocks (221) are respectively connected in the two spiral grooves (211) in a sliding manner.

5. The combined car lifting jack according to claim 2, wherein the support assembly (2) further comprises a driving motor (24), an output end of the driving motor (24) is provided with an external gear (241), the internal sleeve (22) is provided with an internal gear sleeve (222), and the external gear (241) and the internal gear sleeve (222) are meshed with each other.

6. The modular car lifting jack of claim 5, wherein said drive motor (24) is fixedly disposed on one side of said platform and said outer sleeve (21) is fixedly disposed on the other side of said platform.

7. The modular car lifter according to claim 2, characterized in that the support assembly (2) further comprises a lubrication sleeve (25), the lubrication sleeve (25) being sandwiched between the outer sleeve (21) and the inner sleeve (22).

8. The modular car lifting jack of claim 7, wherein the lubricating sleeve (25) is an oil bearing.

9. The modular car lifting jack according to claim 7, wherein there are two lubrication sleeves (25), and two lubrication sleeves (25) are provided in the outer sleeve (21) at intervals.

10. The combined car lifting jack of claim 9, wherein an end cap (212) is disposed on one end of the outer sleeve (21) adjacent to the support block (23), and one end of the inner sleeve (22) passes through the end cap (212) and is connected to the support block (23).