CN206553135U - A kind of hydraulic jack - Google Patents
A kind of hydraulic jack Download PDFInfo
- Publication number
- CN206553135U CN206553135U CN201621297426.9U CN201621297426U CN206553135U CN 206553135 U CN206553135 U CN 206553135U CN 201621297426 U CN201621297426 U CN 201621297426U CN 206553135 U CN206553135 U CN 206553135U
- Authority
- CN
- China
- Prior art keywords
- oil
- oil cylinder
- switch
- locking
- overcoat
- 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 jack, include base, oil cylinder, overcoat, the pump housing, fore-set component, oil cylinder, overcoat and the pump housing are arranged on the base, fore-set component is located in oil cylinder, oil cylinder is located in overcoat, and oil pocket is formed between oil cylinder and overcoat；Base is communicated with the second channel of the first passage of oil cylinder and oil pocket, connection oil pocket and the pump housing and connects the third channel of the pump housing and oil cylinder, the through hole of connection first passage is additionally provided with base, through hole is provided with the first ball type check valve, first ball type check valve is connected with pre- switch for locking, pre- switch for locking is provided with stopper slot, base provided with the spacer pin being engaged with the stopper slot of pre- switch for locking.The utility model is simple and reasonable, by setting up spacer pin, coordinates the stopper slot of itself and pre- switch for locking, and when pressure release, pre- switch for locking switchs pretension locked after rotation certain distance, prevents pretension switch rotary from excessively, causing to come off and cause danger.
Description
Technical field
The utility model is related to hydraulic power unit technical field, more particularly to a kind of hydraulic jack.
Background technology
Jack is the simple crane gear that a kind of lifting is highly less than 1m, with rigidity top lift part as equipment, is led to
Cross the light small crane gear of top bracket or bottom claw the jacking weight in stroke.It has mechanical and two kinds of fluid pressure type.
Mechanical jack has rack-and-pinion and spiral two kinds again, because lifting capacity is small, and operation is laborious, and mechanical jack is typically only used
In flight-line maintenance work.Hydraulic jack compact conformation, stable working is easy to carry, therefore uses extensive.
Piston boit, must all original position be put into after lifting is finished by manually operated hydraulic jack, to recover original-pack
After carry.At this moment need, by in-oil cylinder hydraulic oil pressure release, can just make piston return to original position.The method of pressure release is typically to rotate pretension
Switch, fuel outlet valve is unscrewed, in-oil cylinder hydraulic oil is back to fuel reserve tank by oil duct.But in heavy load situations, if
Accelerate pressure release speed of draining the oil, by pretension switch rotary excessively sometimes, cause to come off so that hydraulic oil sprays rapidly, pushed up
The weight risen can rapidly decline together with piston rod, and it is dangerous that this thing happens.So people are typically when in use
Carefully operated, accomplish slow pressure release as far as possible, cause the time to waste.
The content of the invention
, by setting up spacer pin, make itself and pretension there is provided a kind of hydraulic jack with defect in view of the shortcomings of the prior art
The stopper slot of switch is engaged, and when pressure release, pretension is switched locked, prevent pretension from opening by pre- switch for locking after rotation certain distance
Close rotation excessive, cause to come off, moreover it is possible to avoid pretension switch rotary too small, cause the time to waste.
To achieve the above object, the utility model provides following technical scheme.
A kind of hydraulic jack, includes base, oil cylinder, overcoat, the pump housing, fore-set component, the oil cylinder, overcoat and the pump housing
It is arranged on the base, the fore-set component is located in oil cylinder, the oil cylinder is located in overcoat, shape between oil cylinder and overcoat
Into oil pocket；The base is communicated with the second channel of first passage, connection oil pocket and the pump housing oil-feed port of oil cylinder and oil pocket
And connect the through hole that connection first passage is additionally provided with the third channel of the fuel-displaced port of the pump housing and oil cylinder, base, the through hole
Provided with the first ball type check valve, the first ball type check valve is connected with adjustable pre- switch for locking, and pre- switch for locking is provided with limit
Position groove, pre- switch for locking coordinates so that first passage to be blocked with the first ball type check valve, provided with the limit with pre- switch for locking in base
The spacer pin that position groove is engaged.
Further, the pump housing include hydraulic cylinder and the plunger assembly in hydraulic cylinder, the second channel with
The junction of pump housing oil-feed port is provided with the second ball type check valve, and the junction of the third channel and oil cylinder is provided with the 3rd steel
Bead check valve.
Further, it is connected with screw plug provided with the oil filler connected with oil pocket, oil filler at the top of the overcoat.
Further, the plunger top is connected with the pressure ring above hydraulic cylinder, and pressure ring is used to connect depression bar.
Further, described pressure ring one end is connected to base by connecting rod.
Further, closure is provided with the top of the overcoat, fore-set top passes through closure.
Further, the pre- switch for locking is trip bolt, and trip bolt is connected to through hole by the way that screw thread is adjustable.
The beneficial effects of the utility model are：Hydraulic jack of the present utility model, it is simple and reasonable, during work, lead to
Cross plunger assembly to move up so that hydraulic oil enters hydraulic cylinder by second channel in oil pocket, then moving down by plunger assembly again makes
Obtain hydraulic oil in hydraulic cylinder by third channel to enter in oil cylinder, during pressure release, by rotating pre- switch for locking so that first passage connects
Logical, hydraulic oil enters in oil pocket by first passage in oil cylinder, by setting up spacer pin, matches somebody with somebody the stopper slot of itself and pre- switch for locking
Close, when pressure release pre- switch for locking rotation certain distance after, pretension is switched it is locked, prevent pretension switch rotary excessively, cause
Come off so that hydraulic oil sprays rapidly, can rapidly be declined together with piston rod by the weight of jack-up, cause danger.Also it is avoided that
Because of slow pressure release, the time is caused to waste.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present utility model.
Fig. 2 is exploded view of the present utility model.
Fig. 3 is understructure schematic diagram of the present utility model.
Fig. 4 is sectional view at Fig. 3 A-A.
Fig. 5 is sectional view at Fig. 3 B-B.
Fig. 6 is sectional view at Fig. 3 C-C.
Fig. 1 is into Fig. 6,1. overcoats；2. fore-set component；3. base；31. first passage；32. second channel；33. threeway
Road；34. the first ball type check valve；35. the second ball type check valve；36. the 3rd ball type check valve；37. through hole；4. hydraulic pressure
Cylinder；5. plunger assembly；6. pre- switch for locking；61. stopper slot;7. pressure ring；8. connecting rod；9. oil cylinder；10. closure；11. spacer pin；
12. screw plug.
Embodiment
With reference to accompanying drawing to the further explaination of the utility model.
Referring to a kind of hydraulic jack shown in Fig. 1 to Fig. 6, include base 3, oil cylinder 9, overcoat 1, the pump housing, fore-set group
Part 2, the oil cylinder 9, overcoat 1 and the pump housing are arranged on the base 3, and the fore-set component 2 is located in oil cylinder 9, fore-set group
Part 2 includes fore-set and is connected to the first piston of fore-set bottom, and the oil cylinder 9 is located in overcoat 1, shape between oil cylinder 9 and overcoat 1
Into oil pocket.
The pump housing include hydraulic cylinder 4 and the plunger assembly 5 in hydraulic cylinder 4, plunger assembly 5 include plunger and
The second piston of plunger bottom is connected to, plunger top is connected with the pressure ring 7 positioned at the top of hydraulic cylinder 4, and pressure ring 7, which is used to connect, presses
Bar, one end of pressure ring 7 is connected to base 3 by connecting rod 8.
The base 3 is communicated with first passage 31, connection oil pocket and the oil-feed port of hydraulic cylinder 4 of oil cylinder 9 and oil pocket
Connection first is additionally provided with second channel 32 and the connection fuel-displaced port of hydraulic cylinder 4 and the third channel 33 of oil cylinder 9, base 3 to lead to
The through hole 37 in road 31, the through hole 37 is provided with the first ball type check valve 34, and the first ball type check valve 34 is connected with adjustable
Pre- switch for locking 6, pre- switch for locking 6 is trip bolt, and trip bolt is connected to through hole 37, pre- switch for locking 6 by the way that screw thread is adjustable
Stopper slot 61 is provided with, pre- switch for locking 6 coordinates so that first passage 31 to be blocked with the first ball type check valve 34, set in base 3
There are the spacer pin 11 that the stopper slot 61 with pre- switch for locking 6 is engaged, the second channel 32 and the connection of the oil-feed port of hydraulic cylinder 4
Place is provided with the second ball type check valve 35, when hydraulic oil enters hydraulic cylinder 4 through second channel 32 in oil pocket, will promote second
Ball type check valve 35 is opened, and hydraulic oil smoothly enters hydraulic cylinder 4, if hydraulic oil wants to flow back into oil pocket, will promote the
Two ball type check valves 35 are fitted closely with second channel 32, and hydraulic oil cannot be introduced into oil pocket in hydraulic cylinder 4.The third channel
33 are provided with the 3rd ball type check valve 36 with the junction of oil cylinder 9.When hydraulic oil enters oil cylinder through third channel 33 in hydraulic cylinder 4
When 9, the 3rd ball type check valve 36 will be promoted to open, hydraulic oil smoothly enters oil cylinder 9, if hydraulic oil is wanted to flow back into hydraulic pressure
During cylinder 4, the 3rd ball type check valve 36 will be promoted to be fitted with third channel 33 closely, hydraulic oil cannot be introduced into liquid in oil cylinder 9
Cylinder pressure 4.
During work, depression bar is connected into pressure ring 7, applying upward power to depression bar drives plunger to move up, and then drives second to live
Move beyond the Great Wall so that hydraulic oil enters hydraulic cylinder 4 by second channel 32 in oil pocket, then applying downward power to depression bar again drives
Plunger is moved down so that hydraulic oil is entered in oil cylinder 9 by third channel 33 in hydraulic cylinder 4, drives fore-set component 2 to rise, and is realized
The purpose of jack-up weight.
During pressure release, by rotating pre- switch for locking 6 so that first passage 31 is connected, hydraulic oil passes through first passage in oil cylinder 9
31 enter in oil pocket.By setting up spacer pin 11, it is set to be engaged with the stopper slot 61 of pre- switch for locking 6, pretension is opened when pressure release
6 are closed after rotation certain distance, the stopper slot 61 of spacer pin 11 and pre- switch for locking 6 offsets that pre- switch for locking 6 is locked, prevents pretension
The rotation of switch 6 is excessive, causes to come off so that hydraulic oil sprays rapidly, by the weight of jack-up can and piston rod it is rapid together under
Drop, causes danger.Also it is avoided that because of slow pressure release, causes the time to waste.
Further, the top of overcoat 1 is communicated with the oil filler of oil pocket, and oil filler is connected with screw plug 12, works as oil pocket
During interior hydraulic pressure shortage of oil, it just can open screw plug 12 and add hydraulic oil out of oil filler phase oil pocket.The top of overcoat 1 is provided with sealing
Lid 10, the top of fore-set component 2 passes through closure 10, and closure 10 causes jack sealing good, and hydraulic oil is difficult leakage.
Described above is only better embodiment of the present utility model, therefore all according to described in the utility model patent claim
The equivalent change or modification done of construction, feature and principle, be included in the utility model patent claim.
Claims (7)
1. a kind of hydraulic jack, includes base（3）, oil cylinder（9）, overcoat（1）, the pump housing, fore-set component（2）, its feature exists
In：The oil cylinder（9）, overcoat（1）The base is arranged at the pump housing（3）On, the fore-set component（2）Positioned at oil cylinder（9）
It is interior, the oil cylinder（9）Positioned at overcoat（1）It is interior, oil cylinder（9）With overcoat（1）Between form oil pocket；The base（3）It is communicated with
Oil cylinder（9）With the first passage of oil pocket（31）, connection oil pocket and pump housing oil-feed port second channel（32）And the connection pump housing
Fuel-displaced port and oil cylinder（9）Third channel（33）, base（3）On be additionally provided with connection first passage（31）Through hole（37）, institute
State through hole（37）Provided with the first ball type check valve（34）, the first ball type check valve（34）It is connected with adjustable pre- switch for locking
（6）, pre- switch for locking（6）It is provided with stopper slot (61), pre- switch for locking（6）With the first ball type check valve（34）Coordinate with by first
Passage（31）It is provided with and pre- switch for locking in closure, base (3)（6）The spacer pin that is engaged of stopper slot（11）.
2. a kind of hydraulic jack according to claim 1, it is characterised in that：The pump housing includes hydraulic cylinder（4）And
Positioned at hydraulic cylinder（4）Interior plunger assembly（5）, the second channel（32）The second steel is provided with the fuel-displaced port junction of the pump housing
Bead check valve（35）, the third channel（33）With oil cylinder（9）Junction be provided with the 3rd ball type check valve（36）.
3. a kind of hydraulic jack according to claim 1, it is characterised in that：The overcoat（1）Top is provided with and oil pocket
The oil filler of connection, oil filler is connected with screw plug（12）.
4. a kind of hydraulic jack according to claim 2, it is characterised in that：The plunger assembly（5）Top is connected with
Positioned at hydraulic cylinder（4）The pressure ring of top（7）, pressure ring（7）For connecting depression bar.
5. a kind of hydraulic jack according to claim 4, it is characterised in that：The pressure ring（7）One end passes through connecting rod（8）
It is connected to base（3）.
6. a kind of hydraulic jack according to claim 1, it is characterised in that：The overcoat（1）Top is provided with closure
（10）, fore-set component（2）Top passes through closure（10）.
7. a kind of hydraulic jack according to claim 1, it is characterised in that：The pre- switch for locking（6）For trip bolt,
Trip bolt is connected to through hole by the way that screw thread is adjustable（37）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621297426.9U CN206553135U (en) | 2016-11-30 | 2016-11-30 | A kind of hydraulic jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621297426.9U CN206553135U (en) | 2016-11-30 | 2016-11-30 | A kind of hydraulic jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206553135U true CN206553135U (en) | 2017-10-13 |
Family
ID=60369401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621297426.9U Expired - Fee Related CN206553135U (en) | 2016-11-30 | 2016-11-30 | A kind of hydraulic jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206553135U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112792594A (en) * | 2020-12-30 | 2021-05-14 | 陆锋 | One-way hydraulic clamping and fastening device with high safety |
-
2016
- 2016-11-30 CN CN201621297426.9U patent/CN206553135U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112792594A (en) * | 2020-12-30 | 2021-05-14 | 陆锋 | One-way hydraulic clamping and fastening device with high safety |
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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: 20171013 Termination date: 20181130 |