CN216403685U

CN216403685U - Hydraulic multistage jack for railway maintenance equipment

Info

Publication number: CN216403685U
Application number: CN202122812978.6U
Authority: CN
Inventors: 李同林
Original assignee: Tianjin Zhongguanghui Railway Machinery Manufacturing Co ltd
Current assignee: Tianjin Zhongguanghui Railway Machinery Manufacturing Co ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2022-04-29
Anticipated expiration: 2031-11-17

Abstract

The utility model discloses a hydraulic multistage jack for railway maintenance equipment, which comprises a cylinder body, wherein a cylinder tail is arranged on one side of the cylinder body, an oil inlet is formed in the cylinder tail and is communicated with the cylinder body, a first jacking rod is arranged in the middle of the cylinder body, a second jacking rod is arranged on the outer side of the first jacking rod, one end, far away from the cylinder tail, of the second jacking rod is fixedly connected with a gland, and a plurality of second sealing rings are arranged between the first jacking rod and the second jacking rod and between the second jacking rod and the gland. Compared with the common jack, the hydraulic multistage jack for the railway maintenance equipment has the advantages of small volume, light weight and large jacking force, adopts a connection mode which is universal with the railway special equipment, has high interchangeability, and can fully play the functions of the railway special tool. The jacking mode of the oil source drive of the railway maintenance equipment is adopted, so that the method has the advantage of convenient material taking, and the equipment and maintenance of special oil source equipment are saved.

Description

Hydraulic multistage jack for railway maintenance equipment

Technical Field

The utility model relates to the technical field of railway maintenance equipment, in particular to a hydraulic multistage jack for railway maintenance equipment.

Background

Some devices on the railway maintenance equipment vehicle have the defects of large volume, heavy weight and inconvenient lifting and moving, and when large-scale equipment breaks down and needs to be maintained, the devices with faults need to be supported in situ, so that parts can be maintained and replaced conveniently. To the large-scale device that can not hoist and mount, generally carry out the jacking operation, carry out the original place jacking with trouble device, current jacking device simple structure, jacking device forms effectively, and occupation space is big, can't use in some narrow and small places in space, and the convenience of use is poor. Therefore, the hydraulic multistage jack for the railway maintenance equipment is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a hydraulic multistage jack for railway maintenance equipment, which aims to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the hydraulic multistage jack for the railway maintenance equipment comprises a cylinder body, wherein a cylinder tail is arranged on one side of the cylinder body, an oil inlet is formed in the cylinder tail and is communicated with the cylinder body, a first jacking rod is arranged in the middle of the cylinder body, a second jacking rod is arranged on the outer side of the first jacking rod, one end, far away from the cylinder tail, of the second jacking rod is fixedly connected with a gland, and a plurality of second sealing rings are arranged between the first jacking rod and the second jacking rod and between the second jacking rod and the gland.

Preferably, the upper end in the oil inlet is provided with a one-way valve, and the lower end of the one-way valve is provided with an unloading valve.

Preferably, a first sealing ring is arranged between the cylinder body and the cylinder tail.

Preferably, handles are arranged on two sides of the cylinder body, and anti-skidding sleeves are arranged on the handles.

Compared with the prior art, the utility model has the beneficial effects that: compared with the common jack, the hydraulic multistage jack for the railway maintenance equipment has the advantages of small volume, light weight and large jacking force, adopts a connection mode which is universal with the railway special equipment, has high interchangeability, and can fully play the functions of the railway special tool. The jacking mode of the oil source drive of the railway maintenance equipment is adopted, so that the method has the advantage of convenient material taking, and the equipment and maintenance of special oil source equipment are saved. The external oil source drive has the characteristics of quick action, time saving and labor saving.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

in the figure: the cylinder comprises a cylinder body 1, a cylinder tail 2, an oil inlet 3, a one-way valve 4, an unloading valve 5, a first sealing ring 6, a first jacking rod 7, a second jacking rod 8, a gland 9, a second sealing ring 10, a handle 11 and an anti-skid sleeve 12.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a hydraulic multistage jack for railway maintenance equipment comprises a cylinder body 1, wherein a cylinder tail 2 is arranged on one side of the cylinder body 1, an oil inlet 3 is formed in the cylinder tail 2, the oil inlet 3 is communicated with the cylinder body 1, hydraulic oil can be injected into the inner wall of the cylinder body 1 through the oil inlet 3, an oil port connector can be connected with an oil source interface on the railway maintenance equipment, an oil inlet and an oil outlet share one oil way, the hydraulic jack adopts a working mode of one-way jacking and load return, a first jacking rod 7 is arranged in the middle of the inside of the cylinder body 1, a second jacking rod 8 is arranged on the outer side of the first jacking rod 7, one end, far away from the cylinder tail 2, of the second jacking rod 8 is fixedly connected with a gland 9, a plurality of second sealing rings 10 are arranged between the first jacking rod 7 and the second jacking rod 8 and between the second jacking rod 8 and the gland 9, the first jacking rod 7 and the second jacking rod 8 are made of high-quality alloy steel rods, the material is subjected to quenching and tempering, the comprehensive mechanical property of the material is improved, the processing is easy, the inner hole boring and rolling processing, the outer circle surface hardening and grinding processing are carried out, and the material is wear-resistant and not easy to corrode.

Furthermore, the upper end in the oil inlet 3 is provided with the check valve 4, the lower end of the check valve 4 can be provided with the unloading valve 5, the oil inlet 3 is provided with the check valve 4 and the unloading valve 5, the check valve is made of domestic standard parts and is easy to purchase, and the unloading valve 5 is frequently moved, adopts a steel ball sealing mode, and is good in sealing effect and long in service life. When the unloading valve 5 is closed, the jack jacks and maintains pressure. When the unloading valve 5 is opened, the jacking rod can retract into the cylinder body under the action of external force, and oil flows back.

Furthermore, a first sealing ring 6 is arranged between the cylinder body 1 and the cylinder tail 2, and because the hydraulic multi-stage jack retracts by manpower, the sealing element and the guide ring are elements with small friction force on the premise of ensuring the sealing effect during the selective sealing.

Further, the handles 11 are arranged on the two sides of the cylinder body 1, the anti-skid sleeves 12 are arranged on the handles 11, so that the hand can be placed in a small space by a single person or in a large space by two persons, the anti-skid sleeves 12 can increase the friction force between the palm and the handles 11, and the holding stability of the cylinder body 1 is improved.

Specifically, the hydraulic multi-stage jack mainly provides service for overhauling railway maintenance equipment, and the top of the jacking rod adopts connecting equipment which is universal with a special railway tool, so that interchangeability and universality among equipment are facilitated, and waste is avoided. The hydraulic multi-stage jack is driven by an external oil source, so that the operation space is reduced, the lifting operation is convenient to be carried out in a narrow space, the oil inlet 3 adopts a model matched with an oil port connector of railway maintenance equipment, local materials can be obtained, and the hydraulic multi-stage jack is timely and efficiently put into maintenance work. The jacking rod adopts a two-stage design, so that the mounting space of the jack can be effectively reduced, the lifting height is increased, and the application range is wider. The handle 11 is installed to the cylinder body, designs mainly to railway maintenance equipment space complicacy, the characteristics that single difficult installation is firm.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a railway maintenance hydraulic pressure multistage jack for equipment, includes cylinder body (1), its characterized in that: the improved cylinder is characterized in that a cylinder tail (2) is arranged on one side of the cylinder body (1), an oil inlet (3) is formed in the cylinder tail (2), the oil inlet (3) is communicated with the cylinder body (1), a first jacking rod (7) is arranged in the middle of the interior of the cylinder body (1), a second jacking rod (8) is arranged on the outer side of the first jacking rod (7), one end, far away from the cylinder tail (2), of the second jacking rod (8) is fixedly connected with a gland (9), and a plurality of second sealing rings (10) are arranged between the first jacking rod (7) and the second jacking rod (8) and between the second jacking rod (8) and the gland (9).

2. The hydraulic multi-stage jack for railway maintenance equipment of claim 1, wherein: the oil inlet (3) is internally provided with a check valve (4) at the upper end, and the check valve (4) is internally provided with an unloading valve (5) at the lower end.

3. The hydraulic multi-stage jack for railway maintenance equipment of claim 1, wherein: a first sealing ring (6) is arranged between the cylinder body (1) and the cylinder tail (2).

4. The hydraulic multi-stage jack for railway maintenance equipment of claim 1, wherein: the novel bathtub is characterized in that handles (11) are arranged on two sides of the bathtub body (1), and anti-skidding sleeves (12) are arranged on the handles (11).