CN207726643U - Hydraulic jack - Google Patents
Hydraulic jack Download PDFInfo
- Publication number
- CN207726643U CN207726643U CN201721895895.5U CN201721895895U CN207726643U CN 207726643 U CN207726643 U CN 207726643U CN 201721895895 U CN201721895895 U CN 201721895895U CN 207726643 U CN207726643 U CN 207726643U
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- CN
- China
- Prior art keywords
- oil
- piston
- plunger pump
- pressurizing chamber
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of hydraulic jacks, including pedestal, cylinder barrel, oil depot, cylinder cap, aerating gas nozzle, piston, piston rod and plunger pump.Using the seal cavity below piston as pressurizing chamber, seal cavity above piston is as pressure-releasing chamber, fill the air of certain pressure into pressure-releasing chamber by aerating gas nozzle first, then the oil outlet of plunger pump is connected to pressurizing chamber, and the oil inlet of plunger pump is connected to oil depot, and pressurizing chamber is connected to oil depot, hydraulic oil is constantly pumped to pressurizing chamber out of oil depot by plunger pump, push piston upwards, piston rod end is connect with object to be drawn simultaneously, the process that piston rod moves upwards, realize weight traction, and when needing descent of piston return, opening valve makes the oil stream in pressurizing chamber into oil depot, pressure-releasing chamber air is piston pushed home.In use, jack need to only be fixed, it is simple in structure without using other auxiliary equipments, it is practical and convenient.
Description
Technical field
The utility model is related to hydraulic haulage equipment technology field more particularly to a kind of hydraulic jacks.
Background technology
Jack is a kind of simplest lifting equipment of lifting height small (being less than 1m).It has mechanical and fluid pressure type two
Kind.Jack is mainly used for the departments such as factories and miness, communications and transportation as the work such as Mechanical Help and other liftings, support.Its structure
Light and handy firm, flexibility and reliability, a people can carry and operate.
Chinese patent CN204324795U discloses a kind of Manual hydraulic jack, and jack includes pedestal, cylinder barrel, work
Plug, piston rod and plunger pump, cylinder barrel and plunger pump are upside down on pedestal, and will be close below the oil outlet and piston of plunger pump
Seal cavity connection, and the oil inlet of plunger pump is connected to the seal cavity above piston, using the seal cavity below piston as
Pressurizing chamber, the seal cavity above piston hydraulic oil is constantly pumped to out of pressure-releasing chamber as pressure-releasing chamber, by plunger pump plus
Chamber is pressed, pushes piston upwards, while piston rod end being connect with object to be drawn, the process that piston rod moves upwards, it is real
Existing weight traction need to only fix jack in use, simple in structure without using other auxiliary equipments, make
With conveniently.But there are still shortcomings for the jack, and after piston upwards realize weight traction, when reusing,
Piston need to be pulled down, since jack is not to use daily, so ought after a period of time, piston be clung with cylinder barrel, to handle
Piston pulls down, and needs to exert great efforts, and often needs 2-3 talent's stretchies, so the jack is made troubles to user, if
Sleeve spring on the piston rod can solve the problems, such as descent of piston in theory, but since descent of piston needs very big pulling force, institute
There is certain length with spring, but piston stroke is shorter, so can not solve the problems, such as piston rod downlink very well using spring.
Invention content
The technical problem to be solved by the utility model is to provide a kind of hydraulic pressure for keeping piston self return simple and practicable
Jack.
In order to solve the above technical problems, technical solution adopted in the utility model is：A kind of hydraulic jack, including bottom
Seat, cylinder barrel, piston, piston rod and plunger pump, it is characterised in that：On the base and in cylinder barrel peripheral hardware oil depot, the plunger
Pump oil inlet is connected to by oil circuit with oil depot, and the cavity in the cylinder barrel and below piston is pressurizing chamber, and is located at piston
The inner cavity of cylinder of top is pressure-releasing chamber, and the plunger pump oil outlet is connected to by oil circuit with the pressurizing chamber in cylinder barrel, the pressurization
Chamber is connected to by oil circuit with oil depot, and cylinder barrel top is less than at the top of the oil depot, on the oil depot top and in cylinder barrel peripheral hardware cylinder cap,
Aerating gas nozzle is set on the cylinder cap.
The first check valve is equipped on the oil circuit that the plunger pump oil inlet is connected to oil depot, and it is fuel-displaced in the plunger pump
The oil circuit that mouth is connected to pressurizing chamber in cylinder barrel is equipped with the second check valve, and valve is set on the oil circuit that the pressurizing chamber is connected to oil depot
Door.
It is using advantageous effect caused by above-mentioned technical proposal：First by aerating gas nozzle to cylinder barrel inner carrier top
Pressure-releasing chamber in fill the air of certain pressure, the air pressure in pressure-releasing chamber is generally 0.3Mpa.Then by cylinder barrel and plunger pump
It is upside down on pedestal, and the oil outlet of plunger pump is connected to pressurized cavity, and the oil inlet of plunger pump is connected to oil depot, is passed through
Hydraulic oil is constantly pumped to pressurizing chamber by plunger pump from oil depot, pushes piston upwards, at the same by piston rod end with wait leading
Primer connects, the process that piston rod moves upwards, and realizes weight traction；If you need to piston return, when descent of piston, first, open
Pressurizing chamber and the valve on oil depot oil circuit, the pressure of pressurizing chamber are less than the pressure of the pressure-releasing chamber of piston upper, the oil in pressurizing chamber
Oil depot is flowed to, pressure-releasing chamber air is piston pushed home.The oil of pressurizing chamber just automatically into oil depot, thereby realizes piston certainly
The purpose of dynamic return.When piston stroking upward, pressurizing chamber is closed with the valve on oil depot oil circuit.The utility model hydraulic pressure thousand
Jin top in use, need to only fix jack, without using other auxiliary equipments, so that it may realize the liter of jack
Rise and return, it is simple in structure, it is practical and convenient.
Description of the drawings
Fig. 1 is the utility model structure diagram；
In the accompanying drawings：1, pedestal；2, oil depot；3, cylinder cap；4, aerating gas nozzle；5, pressurizing chamber；6, pressure-releasing chamber；11, cylinder barrel；
12, piston；13, handle；14, plunger pump；15, the first check valve；16, the second check valve；17, piston rod；18, valve.
Specific implementation mode
Utility model will be further described in detail below with reference to the attached drawings and specific embodiments.
It can only jack, need during drawing cargo by means of auxiliary equipment ability in order to solve existing hydraulic jack
Realize that the problem of jack return inconvenience, the utility model provide a kind of hydraulic jack as shown in Figure 1, including pedestal 1, cylinder
Cylinder 11, piston 12, piston rod 17 and plunger pump 14, the cylinder barrel 11 are the tubular structure of both ends open, bottom opening end and bottom
The sealing docking of 1 upper surface of seat, the piston 12 is set in cylinder barrel 11 and is slidably matched with 11 inner wall sealing of cylinder barrel, under piston 12
11 seal cavity of cylinder barrel of side is pressurizing chamber 5, and 11 seal cavity of cylinder barrel of 12 top of piston is pressure-releasing chamber 6, is filled in pressure-releasing chamber 6
There are the air of certain pressure, the air in pressure-releasing chamber 6 to be generally 0.3Mppa atmospheric pressure；The piston rod 17 is fixed at work
It fills in the through-hole on 12 lower surfaces and on pedestal 1 to stretch out, convenient for connecting the equipment to be drawn, be set on the through-hole wall
Have and seal the sealing ring that is slidably matched with piston rod 17, the plunger pump 14 is inverted on 1 upper surface of pedestal, on pedestal 1 and
The tubular device for containing oil is set within one week in 11 periphery of cylinder barrel, that is, forms oil depot 2, the oil depot 2 is that sealing is docked with pedestal 1；
2 height of oil depot of the utility model is less than cylinder barrel 11, i.e. 2 top of oil depot is less than 11 top of cylinder barrel, on 2 top of oil depot and in cylinder barrel
11 peripheral hardware cylinder caps 3, the diameter of cylinder cap 3 are simultaneously greater than the diameter of cylinder barrel 11 and oil depot 2, i.e. cylinder cap 3 is covered in cylinder barrel 11 and oil depot 2,
Seal 2 upper end of cylinder barrel 11 and oil depot simultaneously；Cylinder cap 3 and the outside of cylinder barrel 11 to be threadedly coupled, between equipped with sealing ring, prevent
Air leakage in pressure-releasing chamber 6.The aerating gas nozzle 4 that supply pressure-releasing chamber 6 is inflated is set on the cylinder cap；For ease of use, originally
Utility model is equipped with handle 13 on 14 top of plunger pump, and 4 oil outlet of plunger pump is connected by the pressurizing chamber 5 in oil circuit and cylinder barrel 11
It is logical, and 14 oil inlet of plunger pump is connected to by oil circuit with oil depot 2, pressurizing chamber 5 is also connected to oil depot 2 by oil circuit, the plunger
It pumps 14 oil outlets and is equipped with the second one-way cock 16, the oil circuit being connected to oil depot 2 with 14 oil inlet of plunger pump is equipped with the
One one-way cock 15；Valve 18 is set on the pedestal 1 and on the oil circuit that pressurizing chamber 5 is connected to oil depot 2.
During concrete application, one is filled into the pressure-releasing chamber 6 on 11 inner carrier of cylinder barrel, 12 top by aerating gas nozzle 4 first
The air of constant-pressure, the air pressure in pressure-releasing chamber 6 are generally 0.3Mpa.Then cylinder barrel 11 and plunger pump 4 are upside down in bottom again
On seat 1, and the oil outlet of plunger pump 4 is connected to 5 body of pressurizing chamber, and the oil inlet of plunger pump 4 is connected to oil depot 2, passes through column
Hydraulic oil is constantly pumped to pressurizing chamber 5 by plug pump 4 from oil depot 2, and piston 12 is pushed to move upwards, at the same by 17 end of piston rod with
Object connection to be drawn, the process that piston rod 17 moves upwards realize weight traction；If you need to 12 return of piston, when 12 downlink of piston,
First, valve 18 is opened, the pressure of pressurizing chamber 5 is less than the pressure of pressure-releasing chamber 6 at this time, and the oil of pressurizing chamber 5 is just automatically into oil depot
2, the pressure of pressurizing chamber 5 is smaller and smaller, and the pressure of pressure-releasing chamber 6 remains as 0.3Mpa, and piston 12 is run down naturally at this time,
Thereby realize the purpose of 12 self-return of piston.When 12 uplink of piston, valve 18 is closed.The utility model liquid
It presses jack in use, is inflated once to pressure-releasing chamber 6, so that it may to be reused several times, when the air pressure in pressure-releasing chamber 6
When power is not big enough, it need to only be inflated with common inflator.In use, only jack need to be fixed, without using other
Auxiliary equipment, so that it may realize the rise of jack and the purpose of return, it is simple in structure, it is practical and convenient.
Claims (2)
1. a kind of hydraulic jack, including pedestal, cylinder barrel, piston, piston rod and plunger pump, it is characterised in that：In the pedestal
（1）Above and in cylinder barrel（11）Peripheral hardware oil depot（2）, the plunger pump（14）Oil inlet passes through oil circuit and oil depot（2）Connection, the cylinder
Cylinder（11）It is interior and be located at piston（12）The cavity of lower section is pressurizing chamber（5）, and it is located at piston（12）The cylinder barrel of top（11）Inner cavity
For pressure-releasing chamber（6）, the plunger pump（14）Oil outlet passes through oil circuit and cylinder barrel（11）Interior pressurizing chamber（5）Connection, the pressurization
Chamber（5）Pass through oil circuit and oil depot（2）Connection, the oil depot（2）Top is less than cylinder barrel（11）Top, in the oil depot（2）Top
And in cylinder barrel（11）Peripheral hardware cylinder cap（3）, in the cylinder cap（3）On set aerating gas nozzle（4）.
2. hydraulic jack according to claim 1, it is characterised in that：In the plunger pump（14）Oil inlet and oil depot
（2）The oil circuit of connection is equipped with the first check valve（15）, and in the plunger pump（14）Oil outlet and cylinder barrel（11）Interior pressurizing chamber
（5）The oil circuit of connection is equipped with the second check valve（16）, in the pressurizing chamber（5）With oil depot（2）Valve is set on the oil circuit of connection
（18）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721895895.5U CN207726643U (en) | 2017-12-29 | 2017-12-29 | Hydraulic jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721895895.5U CN207726643U (en) | 2017-12-29 | 2017-12-29 | Hydraulic jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207726643U true CN207726643U (en) | 2018-08-14 |
Family
ID=63083637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721895895.5U Expired - Fee Related CN207726643U (en) | 2017-12-29 | 2017-12-29 | Hydraulic jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207726643U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110356994A (en) * | 2019-07-11 | 2019-10-22 | 赵泉 | A kind of hand-hydraulic is very heavy to be hung |
| CN110566427A (en) * | 2019-09-24 | 2019-12-13 | 常熟通润汽车零部件股份有限公司 | Large-tonnage vertical hydraulic jack pump body capable of being lifted quickly in no-load mode |
-
2017
- 2017-12-29 CN CN201721895895.5U patent/CN207726643U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110356994A (en) * | 2019-07-11 | 2019-10-22 | 赵泉 | A kind of hand-hydraulic is very heavy to be hung |
| CN110566427A (en) * | 2019-09-24 | 2019-12-13 | 常熟通润汽车零部件股份有限公司 | Large-tonnage vertical hydraulic jack pump body capable of being lifted quickly in no-load mode |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180814 Termination date: 20191229 |