CN217350543U

CN217350543U - Oil cylinder height limiting device of pneumatic jack

Info

Publication number: CN217350543U
Application number: CN202220118383.2U
Authority: CN
Inventors: 胡敏强
Original assignee: Chengdu Linxiang Automobile Repair Co ltd
Current assignee: Chengdu Linxiang Automobile Repair Co ltd
Priority date: 2022-01-17
Filing date: 2022-01-17
Publication date: 2022-09-02
Anticipated expiration: 2032-01-17

Abstract

The utility model provides a pneumatic jack's hydro-cylinder limit for height device, include: the device main part, the plunger, base and limiting plate, the internally mounted of device main part has the limit for height part, and the inner wall of device main part and the swing joint of plunger, the outside one end of device main part and plunger is provided with the limiting plate, and the base is installed to the bottom of device main part, be provided with the auxiliary component on limiting plate and the base, be convenient for increase the leakproofness between the device and the plunger through the sealing washer, and utilize the material of dust ring rubber, in order to play dirt-proof effect, can prevent simultaneously that hydraulic oil from leaking from the device upper end, and can make hydraulic oil when reaching the height of limit for height oil gallery through the limit for height oil gallery, can get into the device's inner chamber through the limit for height oil gallery, avoid the plunger to take off the jar.

Description

Oil cylinder height limiting device of pneumatic jack

Technical Field

The utility model relates to a hydro-cylinder limit for height technical field, specificly relate to a pneumatic jack's hydro-cylinder limit for height device.

Background

The hydraulic jack is also called oil jack, and is a jack which adopts a plunger or a hydraulic cylinder as a rigid jacking piece. The simple hoisting equipment is generally only provided with a hoisting mechanism for hoisting heavy objects, and the commonly used simple hoisting equipment is provided with a hydraulic jack, a pulley and a winch;

based on the above description, and retrieve an application number: CN 201721729474.5's utility model patent, its limit for height device about a hydropneumatic jack cylinder, including jack main part (1), stop gear (2) and functional mechanism (3), its characterized in that: the limiting mechanism (2) is installed at the front end of the jack main body (1), the functional mechanism (3) is installed at the lower end of the jack main body (1), the limiting mechanism (2) … … is arranged above the functional mechanism (3), the barrel (5) is installed on the left side of the miniature liquid pump (10), the design realizes height limiting work by mainly adding a lead screw, the barrel, a movable column, a slide rod and a limiting ring through retrieval, meanwhile, the position of the limiting ring can be adjusted, different requirements are met, the application range is enlarged, and the problems that the height limiting device of the existing hydraulic pneumatic jack oil cylinder cannot be adjusted, the oil cylinder only can meet the use requirement of one specification, different hydraulic pneumatic jack oil cylinders need different height limiting devices, the equipment cost is increased, and the application range is poor are solved;

after retrieval and analysis, the cylinder height limiting device of the existing pneumatic jack easily causes the cylinder body to be damaged when bearing larger pressure, and the working stability of the jack is poor, so that the further research needs to be carried out on the basis of the cylinder height limiting device of the pneumatic jack, and the cylinder height limiting device of the pneumatic jack is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the technical problem that proposes among the above-mentioned background art, provide a pneumatic jack's hydro-cylinder limit for height device, including device main part, plunger, base and limiting plate, the internally mounted of device main part has and is provided with the limit for height part, and the inner wall of device main part and the swing joint of plunger, and the device main part is provided with the limiting plate with the outside one end of plunger, and installs the base in the bottom of device main part, is provided with the auxiliary component on limiting plate and the base.

Preferably, the height limiting member includes: inner chamber, spacing oil gallery and bottom plate, inner chamber embedding set up in the device main part, and the interior top of device main part installs the dust ring to the bottom of dust ring is provided with the sealing washer.

Preferably, the limiting oil return hole is formed between the sealing ring and the inner cavity, the dust ring is made of rubber materials, and the sealing ring is mounted at the upper end in the device main body.

Preferably, the bottom plate is arranged at the bottom of the device main body, the reset valve is embedded in the left side of the inner part of the bottom plate, and the top of the reset valve is connected with the inner cavity through a conduit.

Preferably, the auxiliary member includes: the bottom of the base is rotatably connected with at least two walking wheels, the middle of the left end of the base is provided with an opening, and the left end of the upper surface of the base is tightly attached with a rubber pad.

Preferably, the top of the limiting plate is integrally provided with a limiting top plate at the end close to the device body, the bottom of the limiting plate is integrally provided with a limiting bottom plate at the end far away from the device body, and the limiting plate, the limiting top plate and the limiting bottom plate are integrally S-shaped.

Preferably, connecting shafts are installed at the upper sides of the front end and the rear end of the upper side of the front end and the rear end of the opening of the base of the limiting plate, and the connecting shafts at the upper end and the lower end are clamped through reset springs.

Has the advantages that:

the sealing performance between the device and the plunger is increased conveniently through the sealing ring, the dustproof effect is achieved by utilizing the material of the dustproof ring rubber, meanwhile, hydraulic oil can be prevented from leaking from the upper end of the device, and when the height of the height-limited oil return hole is reached, the hydraulic oil can enter the inner cavity of the device through the height-limited oil return hole, so that the plunger is prevented from being out of a cylinder;

through the plunger in the upward movement, can drive the limiting plate, spacing roof and spacing bottom plate synchronous motion, when needs reset the plunger, can twist out one section length with the reset valve for hydraulic oil among the device can follow and get into in the inner chamber in the pipe of reset valve intercommunication, and then makes hydraulic oil disappear to the pressure of plunger, the plunger downstream of being convenient for, simultaneously, utilize reset spring can assist the faster answer of plunger to the normal position, the effectual stability that improves the device during operation.

Drawings

FIG. 1 is a schematic view of the overall plane structure of the present invention;

fig. 2 is a schematic plan view of the device body of the present invention;

FIG. 3 is an enlarged schematic view of A of FIG. 2 according to the present invention;

fig. 4 is a schematic top view of the base of the present invention;

in fig. 1 to 4, the correspondence between the component names and the reference numbers is:

1-device body, 101-plunger, 102-inner cavity, 103-dustproof ring, 104-sealing ring, 105-height-limiting oil return hole, 106-bottom plate, 107-guide pipe, 108-reset valve, 2-base, 201-walking wheel, 202-rubber pad, 3-limiting plate, 301-limiting top plate, 302-limiting bottom plate, 303-connecting shaft and 304-reset spring.

Detailed Description

Please refer to fig. 1 to 4, in an embodiment of the present invention, an oil cylinder height limiting device for a pneumatic jack includes a device main body 1, a plunger 101, a base 2 and a limiting plate 3, wherein the inside of the device main body 1 is provided with a height limiting component, and the inner wall of the device main body 1 is movably connected to the plunger 101, the outer side ends of the device main body 1 and the plunger 101 are provided with the limiting plate 3, the base 2 is installed at the bottom of the device main body 1, and the limiting plate 3 and the base 2 are provided with auxiliary components.

Wherein, limit for height part includes: inner chamber 102, spacing oil gallery 105 and bottom plate 106, the embedding of inner chamber 102 sets up in device main part 1, and the interior top of device main part 1 installs dust ring 103 to the bottom of dust ring 103 is provided with sealing washer 104, is convenient for increase the leakproofness between this device main part 1 and plunger 101 through sealing washer 104, utilizes the material of dust ring 103 rubber, in order to play dirt-proof effect, can prevent simultaneously that hydraulic oil from leaking from the upper end of this device main part 1.

The limit oil return hole 105 is arranged between the sealing ring 104 and the inner cavity 102, the dust ring 103 is made of rubber, the sealing ring 104 is installed at the upper end of the inner part of the device main body 1, and hydraulic oil can enter the inner cavity 102 of the device through the height limit oil return hole 105 when reaching the height of the height limit oil return hole 105 through the height limit oil return hole 105, so that the plunger 101 is prevented from being out of a cylinder.

The bottom plate 106 is installed at the bottom of the device body 1, the reset valve 108 is embedded in the left side of the inside of the bottom plate 106, the top of the reset valve 108 is connected with the inner cavity 102 through the guide pipe 107, when the plunger 101 needs to be reset, the reset valve 108 can be screwed out for a certain length, so that hydraulic oil in the device body 1 can enter the inner cavity 102 from the guide pipe 107 communicated with the reset valve 108, the pressure of the hydraulic oil on the plunger 101 is eliminated, and the plunger 101 can move downwards conveniently.

Wherein, the auxiliary member includes: base 2 and limiting plate 3, the bottom of base 2 is rotated and is connected with two at least walking wheels 201, and the left end middle part of base 2 is the opening setting to the upper surface left end of base 2 closely laminates rubber pad 202, and when can contact with limiting bottom plate 302 through rubber pad 202, reduces the vibrations that plunger 101 and limiting bottom plate 302 downshifted and produce, has certain shock attenuation effect.

Wherein, the top of limiting plate 3 is close to the one end integration of device main part 1 and is provided with spacing roof 301, and the bottom of limiting plate 3 is kept away from the one end integration of device main part 1 and is provided with spacing bottom plate 302 to limiting plate 3, spacing roof 301 are "S" form with spacing bottom plate 302 is whole, through plunger 101 in the rebound, can drive limiting plate 3, spacing roof 301 and spacing bottom plate 302 synchronous motion.

Wherein, connecting axle 303 is all installed at both ends around both ends upside and the 2 openings of base around the limiting plate's 3 front and back both ends upside, and through reset spring 304 joint between the connecting axle 303 at upper and lower both ends, utilize reset spring 304 can assist the more rapid answer to the normal position of plunger 101, the effectual stability that has improved device main part 1 during operation.

The working principle is as follows:

when the oil cylinder height limiting device of the pneumatic jack is installed, firstly, the plunger 101 is driven to move upwards gradually by hydraulic oil, and the plunger 101 can drive the limiting plate 3, the limiting top plate 301 and the limiting bottom plate 302 to move synchronously while moving upwards, then the sealing ring 104 is used for increasing the sealing performance between the device main body 1 and the plunger 101, and the material of the dust ring 103 rubber is utilized to play a dustproof role, meanwhile, the hydraulic oil can be prevented from leaking from the upper end of the device main body 1, then, the height limiting oil return hole 105 can enable the hydraulic oil to enter the inner cavity 102 of the device through the height limiting oil return hole 105 when reaching the height of the height limiting oil return hole 105, the plunger 101 is prevented from being out of the cylinder, when the plunger 101 needs to be reset, the reset valve 108 can be screwed out by a length, so that the hydraulic oil in the device main body 1 can enter the inner cavity 102 from the conduit 107 communicated with the reset valve 108, and then make hydraulic oil disappear to the pressure of plunger 101, the plunger 101 of being convenient for moves down, simultaneously, utilize reset spring 304 can assist plunger 101 more fast to resume to the normal position, the effectual stability that improves device main part 1 during operation, when can contact with spacing bottom plate 302 through rubber pad 202 at last, reduce the vibrations that plunger 101 and spacing bottom plate 302 moved down and produced, have certain shock attenuation effect.

Claims

1. A hydro-cylinder limit for height device of pneumatic jack includes: device main part (1), plunger (101), base (2) and limiting plate (3), its characterized in that: the utility model discloses a device, including device main part (1), the internally mounted of device main part (1) has the limit for height part, and the inner wall of device main part (1) and the swing joint of plunger (101), the outside one end of device main part (1) and plunger (101) is provided with limiting plate (3), and installs base (2) bottom of device main part (1), be provided with the auxiliary component on limiting plate (3) and base (2).

2. The cylinder height limiting device of the pneumatic jack according to claim 1, wherein: the height limiting member includes: inner chamber (102), spacing oil gallery (105) and bottom plate (106), inner chamber (102) embedding sets up in device main part (1), and the interior top of device main part (1) installs dust ring (103) to the bottom of dust ring (103) is provided with sealing washer (104).

3. The oil cylinder height limiting device of the pneumatic jack as claimed in claim 2, wherein: the limiting oil return hole (105) is formed between the sealing ring (104) and the inner cavity (102), the dust ring (103) is made of rubber, and the sealing ring (104) is arranged at the upper end in the device main body (1).

4. The oil cylinder height limiting device of the pneumatic jack as claimed in claim 2, wherein: the bottom plate (106) is arranged at the bottom of the device main body (1), a reset valve (108) is embedded in the left side of the interior of the bottom plate (106), and the top of the reset valve (108) is connected with the inner cavity (102) through a guide pipe (107).

5. The oil cylinder height limiting device of the pneumatic jack as claimed in claim 1, wherein: the auxiliary member includes: base (2) and limiting plate (3), the bottom of base (2) is rotated and is connected with two at least walking wheels (201), and the left end middle part of base (2) is the opening setting to the upper surface left end of base (2) closely laminates rubber pad (202).

6. The oil cylinder height limiting device of the pneumatic jack as claimed in claim 5, wherein: the top of the limiting plate (3) is integrally provided with a limiting top plate (301) at one end close to the device main body (1), the bottom of the limiting plate (3) is integrally provided with a limiting bottom plate (302) at one end far away from the device main body (1), and the limiting plate (3), the limiting top plate (301) and the limiting bottom plate (302) are integrally S-shaped.

7. The oil cylinder height limiting device of the pneumatic jack as claimed in claim 5, wherein: connecting shafts (303) are mounted at the upper sides of the front end and the rear end of the limiting plate (3) and the front end and the rear end of the opening of the base (2), and the connecting shafts (303) at the upper end and the lower end are connected in a clamping mode through reset springs (304).