CN206940324U - A kind of hydraulic jack - Google Patents
A kind of hydraulic jack Download PDFInfo
- Publication number
- CN206940324U CN206940324U CN201621202710.3U CN201621202710U CN206940324U CN 206940324 U CN206940324 U CN 206940324U CN 201621202710 U CN201621202710 U CN 201621202710U CN 206940324 U CN206940324 U CN 206940324U
- Authority
- CN
- China
- Prior art keywords
- control valve
- oil
- fuel tank
- pressure relief
- door body
- 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.)
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Abstract
It the utility model is related to a kind of hydraulic jack,Fuel tank is connected with oil cylinder by control valve door body,Oil pump is provided between fuel tank and control valve door body,Oil pump is driven by motor,Check valve is provided between fuel tank and oil pump,Hydraulic jacking device is provided with oil cylinder,Control valve door body bottom is connected with pressure relief device,Pressure relief device includes steel ball and spring,Spring one end connects steel ball,The spring other end is fixed on pressure relief device lower end,Pressure relief device side wall is provided with oil strain network interface,Oil strain network interface connection damping hole,Damping hole connects fuel tank by high pressure return line,Pressure relief device lower end connects fuel tank by low-pressure oil return pipe road,Limited block is provided with control valve body,The inflow control valve body being fixed at the top of control valve door body is provided between limited block,Inflow control valve body both sides are respectively equipped with the outflow control valve body for being fixed on control valve door body bottom,Outflow control valve body is stuck under limited block,It is a kind of hydraulic jack that friction speed decline can be carried out according to loading weight size.
Description
Technical field
It the utility model is related to lifting implement technical field, and in particular to a kind of hydraulic jack.
Background technology
Sedan-chair jack for vehicles typically uses hydraulic structure, manually controls hydraulic oil the top of jack is lifted device liter
Rise, physical consumption is big, and efficiency is low, dangerous, and especially female driver feels inconvenience deeply, and particularly in-oil cylinder top is lifted device and fallen after rise
When, the decrease speed of energy held stationary typically in underloading or unloaded decline, if overload, the unexpected rapid decrease of meeting, to behaviour
Author and vehicle lack safety guarantee, huge potential safety hazard be present.
Utility model content
The purpose of this utility model is overcome the deficiencies in the prior art, there is provided one kind can be carried out according to loading weight size
The hydraulic jack that friction speed declines.
The utility model solves its technical problem and takes following technical scheme to realize：
A kind of hydraulic jack, including fuel tank, oil cylinder, hydraulic jacking device, control valve door body, pressure relief device, oil pump and
Motor, the fuel tank and the oil cylinder are connected by the control valve door body, are set between the fuel tank and the control valve door body
There is oil pump, the oil pump is driven by the motor, and check valve is provided between the fuel tank and the oil pump, is provided with the oil cylinder
Hydraulic jacking device, the control valve door body bottom are connected with the pressure relief device, and the pressure relief device includes steel ball and spring,
The spring one end connects the steel ball, and the spring other end is fixed on the pressure relief device lower end, the pressure relief device side
Wall is provided with oil strain network interface, the oil strain network interface connection damping hole, and the damping hole connects institute by high pressure return line
Fuel tank is stated, the pressure relief device lower end connects the fuel tank by low-pressure oil return pipe road, is provided with the control valve body spacing
Block, the inflow control valve body being fixed on by the spring at the top of the control valve door body is provided between the limited block, it is described
Inflow control valve body both sides are respectively equipped with the outflow control valve body that the control valve door body bottom is fixed on by the spring, institute
Outflow control valve body is stated to be stuck under the limited block.
In above-mentioned hydraulic jack, further, the control valve door body respectively with the oil pump, the oil cylinder, institute
State pressure relief device to connect by pipeline, valve is equipped with the pipeline, the fuel tank is connected with the oil pump by pipeline.
In above-mentioned hydraulic jack, further, the position of the oil strain network interface and the position consistency of the steel ball, even
The spring for connecing the steel ball is in nature elongation state.
In above-mentioned hydraulic jack, further, the inflow control valve body section is inverted " convex " type, the stream
It is rectangle to go out application valve body section, and the outflow control valve body is provided with pad.
In above-mentioned hydraulic jack, further, the oil strain network interface is provided with oil cleaner screen.
In above-mentioned hydraulic jack, further, the motor is either-rotation motor.
In above-mentioned hydraulic jack, further, the hydraulic jacking device is piston rod.
The advantages of the utility model and good effect are：
1st, normal speed declines when the utility model can realize zero load, underloading, descending at slow speed when heavily loaded, it is ensured that the peace used
Quan Xing.
2nd, the utility model the sealing of control valve door body, ensures external atmosphere pressure and oil when jack reaches specified altitude assignment
The oil pressure difference of cylinder is stable, weight is stably parked in a height, is not in the phenomenon declined suddenly, ensures jack, weight
With the security of user.
3rd, there is certain distance between the oil cleaner screen and damping hole in the utility model, effectively can prevent in damping hole
Block.
4th, the utility model is simple in construction, stable and reliable for performance, cost is low.
Brief description of the drawings
The technical solution of the utility model is described in further detail below with reference to drawings and examples, still
It should be known that these accompanying drawings only design for task of explanation, therefore not as the restriction of the scope of the utility model.In addition,
Unless otherwise indicated, these accompanying drawings are meant only to conceptually illustrate structure construction described herein, without to carry out to scale
Draw.
Fig. 1 is the structural representation of embodiment.
In figure：
1. fuel tank, 2. control valve door body, 3. oil cylinders, 4. hydraulic jacking devices, 5. oil pumps, 6. motors, 7. check valves, 8. are unloaded
Pressure device, 9. oil strain network interfaces, 10. damping holes, 11. high pressure return lines, 12. steel balls, 13. oil cleaner screens, 14. springs, 15. limits
Position block, 16. outflow control valve bodies, 17. pads, 18. inflow control valve bodies, 19. valves, 20. low-pressure oil return pipe roads, 21. pipelines
Embodiment
Firstly, it is necessary to explanation, illustrates hydraulic jack of the present utility model by by way of example below
Concrete structure, feature and advantage etc., but all descriptions are intended merely to what is illustrated, and should not be construed as to this reality
With new formation any restrictions.In addition, any single technology for being described by or implying in each embodiment mentioned by this paper is special
Sign, or shown or implicit any single technical characteristic in the drawings, still can (or it be equivalent in these technical characteristics
Thing) between continue to be combined or delete, so as to obtain may not refer to directly herein it is of the present utility model more
More other embodiments.In addition, for the sake of simplifying drawing, same or like technical characteristic may only exist in the same figure
Indicated at one.
As shown in figure 1, a kind of hydraulic jack, including fuel tank 1, oil cylinder 3, hydraulic jacking device 4, control valve door body 2, unload
Pressure device 8, oil pump 5 and motor 6, fuel tank 1 and oil cylinder 3 are connected by control valve door body 2, are set between fuel tank 1 and control valve door body 2
There is oil pump 5, oil pump 5 is driven by motor 6, and check valve 7 is provided between fuel tank 1 and oil pump 5, hydraulic jacking device is provided with oil cylinder 3
4, the bottom of control valve door body 2 is connected with pressure relief device 8, and pressure relief device 8 includes steel ball 12 and spring 14, the one end of spring 14 connection steel
Ball 12, the other end of spring 14 are fixed on the lower end of pressure relief device 8, and the side wall of pressure relief device 8 is provided with oil strain network interface 9, and oil strain network interface 9 connects
Damping hole 10 is connect, damping hole 10 connects fuel tank 1 by high pressure return line 11, and the lower end of pressure relief device 8 passes through low pressure oil return
Pipeline 20 connects fuel tank 1, and limited block 15 is provided with control valve door body 2, is provided between limited block 15 and is fixed on control by spring 14
The inflow control valve body 18 at the top of valve body 2 processed, the both sides of inflow control valve body 18 are respectively equipped with is fixed on control by spring 14
The outflow control valve body 16 of the bottom of valve body 2, outflow control valve body 16 are stuck under limited block 15.
Control valve door body 2 is connected with oil pump 5, oil cylinder 3, pressure relief device 8 by pipeline 21 respectively, and valve is equipped with pipeline 21
Door 19, fuel tank 1 is connected with oil pump 5 by pipeline 21, the position of oil strain network interface 9 and the position consistency of steel ball 12, connects steel ball 12
Spring 14 be in nature elongation state, the section of inflow control valve body 18 is inverted " convex " type, the section of outflow control valve body 16
For rectangle, outflow control valve body 16 is provided with pad 17, and oil strain network interface 9 is provided with oil cleaner screen 13, and motor 6 is either-rotation motor,
Hydraulic jacking device 4 is piston rod.
Specific work process is：Motor 6 starts, and motor 6 drives oil pump 5 to work, and pressure is produced between fuel tank 1 and oil pump 5
Oil out, by check valve 7, is transported to oil pump 5, valve 19 is opened, and oil enters control valve door body 2 by difference, oil in fuel tank 1
It is interior, pressure is produced, pasta, which is gradually increasing to reach, produces a upward active force at inflow control valve body 18, inflow control is opened on top
Valve body 18, spring 14 are compressed, and oil enters in the upper cavity of limited block 15, and oil is entered in oil cylinder 3 by pipeline 21, promote piston
Bar top is lifted, and when reaching specified altitude assignment, closes motor 6 and valve 19, control valve door body 2 seal, ensure external atmosphere pressure and oil cylinder 3
Oil pressure difference it is stable, weight is stably parked in a height, after the completion of work, jack need to be lowered, motor 6 reversely opens
Dynamic, when jack is unloaded or underloading, the oil pressure in control valve door body 2 and oil cylinder 3 is small, the steel ball 12 in pressure relief device 8
The pressure born is less than the active force of spring 14, and steel ball 12 will not block low-pressure oil return pipe road 20, and oil is by pressure relief device 8 by low
Oil pipe line 20 is pushed back to be back in fuel tank 1 with normal speed, when jack is heavily loaded, the oil in control valve door body 2 and oil cylinder 3
Pressure is larger, and the oil pressure that steel ball 12 is born is more than the active force of spring 14, and steel ball 12 blocks low-pressure oil return pipe road 20, and oil passes through filter
In oil network mouth 9 to damping hole 10, it is back to by high pressure return line 11 with low speed in fuel tank 1, realizes hydraulic jack
Descending at slow speed.
Normal speed declines when the present embodiment can realize zero load, underloading, descending at slow speed when heavily loaded, it is ensured that the safety used
Property.
The utility model is described in detail above example, but the content is only of the present utility model preferably real
Apply example, it is impossible to be considered as being used to limit practical range of the present utility model.All equalizations made according to present utility model application scope
Change and improvement etc., all should still be belonged within patent covering scope of the present utility model.
Claims (7)
1. a kind of hydraulic jack, including fuel tank, oil cylinder, hydraulic jacking device, control valve door body, pressure relief device, oil pump and electricity
Machine, it is characterised in that：The fuel tank is connected with the oil cylinder by the control valve door body, the fuel tank and the control valve
Oil pump is provided between body, the oil pump is driven by the motor, and check valve, the oil are provided between the fuel tank and the oil pump
Hydraulic jacking device is provided with cylinder, the control valve door body bottom is connected with the pressure relief device, and the pressure relief device includes steel
Ball and spring, the spring one end connect the steel ball, and the spring other end is fixed on the pressure relief device lower end, described to unload
Pressure device side wall is provided with oil strain network interface, the oil strain network interface connection damping hole, and the damping hole passes through high pressure oil return pipe
Road connects the fuel tank, and the pressure relief device lower end connects the fuel tank by low-pressure oil return pipe road, in the control valve body
The inflow control valve being fixed on by the spring at the top of the control valve door body is provided with provided with limited block, between the limited block
Body, the inflow control valve body both sides are respectively equipped with the outflow control that the control valve door body bottom is fixed on by the spring
Valve body, the outflow control valve body are stuck under the limited block.
A kind of 2. hydraulic jack according to claim 1, it is characterised in that：The control valve door body respectively with the oil
Pump, the oil cylinder, the pressure relief device are connected by pipeline, and valve, the fuel tank and the oil pump are equipped with the pipeline
Connected by pipeline.
A kind of 3. hydraulic jack according to claim 1, it is characterised in that：The position of the oil strain network interface and the steel
The position consistency of ball, the spring for connecting the steel ball are in nature elongation state.
A kind of 4. hydraulic jack according to claim 1, it is characterised in that：The inflow control valve body section is inversion
" convex " type, the outflow control valve body section is rectangle, and the outflow control valve body is provided with pad.
A kind of 5. hydraulic jack according to claim 1, it is characterised in that：The oil strain network interface is provided with oil cleaner screen.
A kind of 6. hydraulic jack according to claim 1, it is characterised in that：The motor is either-rotation motor.
A kind of 7. hydraulic jack according to claim 1, it is characterised in that：The hydraulic jacking device is piston rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621202710.3U CN206940324U (en) | 2016-11-08 | 2016-11-08 | A kind of hydraulic jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621202710.3U CN206940324U (en) | 2016-11-08 | 2016-11-08 | A kind of hydraulic jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206940324U true CN206940324U (en) | 2018-01-30 |
Family
ID=61357379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621202710.3U Expired - Fee Related CN206940324U (en) | 2016-11-08 | 2016-11-08 | A kind of hydraulic jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206940324U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111891963A (en) * | 2019-05-05 | 2020-11-06 | 上海赫技机电技术服务有限公司 | Hydraulic jack that stability is good |
-
2016
- 2016-11-08 CN CN201621202710.3U patent/CN206940324U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111891963A (en) * | 2019-05-05 | 2020-11-06 | 上海赫技机电技术服务有限公司 | Hydraulic jack that stability is good |
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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 |
Granted publication date: 20180130 Termination date: 20211108 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |