CN201261702Y - Fast lifting jack - Google Patents
Fast lifting jack Download PDFInfo
- Publication number
- CN201261702Y CN201261702Y CNU2008201628959U CN200820162895U CN201261702Y CN 201261702 Y CN201261702 Y CN 201261702Y CN U2008201628959 U CNU2008201628959 U CN U2008201628959U CN 200820162895 U CN200820162895 U CN 200820162895U CN 201261702 Y CN201261702 Y CN 201261702Y
- Authority
- CN
- China
- Prior art keywords
- lifting
- piston cylinder
- jack
- cylinder
- lifting piston
- 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
Links
- 230000006835 compression Effects 0.000 claims abstract description 22
- 238000007906 compression Methods 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims description 4
- 239000003921 oil Substances 0.000 description 31
- 239000010720 hydraulic oil Substances 0.000 description 5
- 230000001174 ascending effect Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 2
- 108010041986 DNA Vaccines Proteins 0.000 description 1
- 229940021995 DNA vaccine Drugs 0.000 description 1
- 241000220317 Rosa Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000003053 immunization Effects 0.000 description 1
- 238000002649 immunization Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
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- Fluid-Pressure Circuits (AREA)
Abstract
The utility model discloses a quick-lifting jack, which comprises an oil storage cylinder, a compression piston cylinder and a lifting piston cylinder, wherein, the compression piston cylinder is connected with the lifting piston cylinder by the oil storage cylinder through an oil path; a compression piston is arranged in the compression piston cylinder; a lifting piston is arranged in the lifting piston cylinder; a quick-lifting piston cylinder is also arranged in the lifting piston and is sealed by a plunger arranged at the bottom of the lifting piston cylinder; and a quick-lifting oil return on the oil storage cylinder is communicated with the quick lifting piston cylinder through the plunger. The quick-lifting jack can improve the lifting speed of the jack through the quick-lifting piston cylinder under the load-free condition. When being contacted with a load, the jack can be reduce the lifting speed rapidly to lift at the normal speed through pressure feedback of a pressure adjusting valve. Accordingly, the initial lifting speed of the jack can be improved greatly, thereby improving the work efficiency and saving time.
Description
Technical field
The utility model relates to a kind of jack, relates in particular to a kind of jack that hoists soon.
Background technology
We common to hydraulic jack utilized pascal's principle to reach the transmission of power.The hydrostatic drive of jack is to utilize the working medium of the fluid of pressure as transferring power arranged.By pressure to lever, make the oil cylinder pressure oil output, mechanical energy is converted to the pressure energy of fluid.When pressure oil through piping and check valve, promote piston and lift weight, be that the pressure with fluid can convert mechanical energy again to.But whether present hydraulic jack no matter bear heavy duty, and ascending velocity is all identical, under the situation of some rush repairs or single jack want can delay a lot of times under nonexpondable situation.
The utility model content
The purpose of this utility model provides a kind of jack that hoists soon, and when not bearing heavy duty, lifting piston can hoist fast.And when lifting piston touched weight and bears heavy duty, jack rose with normal speed.
In order to reach described purpose, jack soon hoists, comprise oil storage cylinder, oil storage cylinder links together compression piston cylinder and lifting piston cylinder by oil circuit, be provided with compression piston in the compression piston cylinder, be provided with lifting piston in the lifting piston cylinder, also be provided with the piston cylinder that hoists soon in the described lifting piston, piston cylinder hoist soon by the stick harness sealing that is arranged on lifting piston cylinder bottom portion, have one to rise oil return line soon and pass the stick harness access and hoist soon in the piston cylinder on the oil storage cylinder.
Preferably, be provided with pressure-modulation valve in described fast the jack oil circuit.When jack touches load, by pressure feedback, reduce the jack ascending velocity rapidly to pressure-modulation valve, make it rise according to normal speed.
Preferably, also offer overflow ducts in the described lifting piston, overflow ducts one end connects the lifting piston cylinder, and the other end is connected in the oil storage cylinder by outside oil circuit.When such structure can make lifting piston be raised to the extreme higher position, the oil in the lifting piston cylinder gushed from overflow ducts, can not continue to rise, and had played the effect that makes the utility model more durable.
Preferably, boiler check valve E is housed on the described overflow ducts, is connecting the push rod of boiler check valve E, boiler check valve E also is provided with position-limited lever on the overflow ducts between lifting piston cylinder and overflow ducts.This structure is used to be provided with the maximum height of jack, and the situation of avoiding transshipping takes place.
Owing to adopted described structure, when the utility model rises under immunization with gD DNA vaccine, can rise the quick increase of the oil return line piston cylinder pressure inside that hoists soon by fast, and promote the fast ascending velocity that plays jack greatly by the cooperation of hoist soon piston cylinder and stick harness.Improved work efficiency, saved time.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is hoist the soon scheme drawing of jack of the utility model.
The specific embodiment
The jack that hoists soon as shown in Figure 1 comprises oil storage cylinder 16, oil storage cylinder 16 links together compression piston cylinder 3 and lifting piston cylinder 9 by oil circuit, be provided with compression piston 2 in the compression piston cylinder 3, be provided with lifting piston 10 in the lifting piston cylinder 9, also be provided with the piston cylinder 8 that hoists soon in the described lifting piston 10, piston cylinder 8 hoist soon by stick harness 91 sealing that is arranged on lifting piston cylinder 9 bottoms, have one to rise oil return line 5 soon and pass stick harness 91 accesses and hoist soon in the piston cylinder 8 on the oil storage cylinder 16.The described fast oil return line 5 that rises is provided with pressure-modulation valve 11.
Also offer overflow ducts 15 in the described lifting piston 10, overflow ducts 15 1 ends connect lifting piston cylinder 9, and the other end is connected in the oil storage cylinder 16 by outside oil circuit.Described overflow ducts 15 operated by rotary motion are connected with the oil circuit that leads to oil storage cylinder 16 with flexible pipe in lifting piston 10, guarantee can not hinder or breakage when lifting piston 10 motions.
On the described overflow ducts 15 boiler check valve E14 is housed, is connecting the push rod 13 of boiler check valve E14, boiler check valve E14 also is provided with position-limited lever 12 on the overflow ducts 15 between lifting piston cylinder 9 and overflow ducts 15.
During use, at the beginning also not with treat that the top object contacts, be low load this moment.Operating personal will be carried on the compression piston 2, and compression piston cylinder 3 inner chambers form negative pressure, open boiler check valve A1, oil suction from oil storage cylinder 16.When again compression piston 2 being pressed down, the hydraulic oil of compression piston cylinder 3 inner chambers is pushed boiler check valve B4 open, pressure control valve 11 is not opened at this moment, the oil that compression piston cylinder 3 inner chambers extrude all rises oil return line 5 soon and enters the piston cylinder 8 that hoists soon by passing stick harness 91 in-to-ins, promotes lifting piston 10 fast rise.At this moment, negative pressure is formed at lifting piston cylinder 9 bottoms, and the hydraulic oil in the oil storage cylinder 16 is pushed boiler check valve C6 open and given the 9 bottom repairings of lifting piston cylinder.Lifting piston 10 fast rise under this operating mode.
When lifting piston 10 touched weight and bears heavy duty, boiler check valve B4 pushed open by the hydraulic oil of compression piston cylinder 3 inner chambers and compression indicator regulates the valves 11, gives hoist soon piston cylinder 8 and lifting piston cylinder 9 bottom pump oil simultaneously.Lifting piston 10 under this operating mode rises with normal speed.
When lifting piston 10 was raised to the extreme higher position, position-limited lever 12 was obstructed and can not rises again, pushes boiler check valve E14 open by push rod 13, and the hydraulic oil that pumps into lifting piston cylinder 8 is by this passage, and through overflow ducts 15 to oil storage cylinder 16 overflows.Lifting piston 10 no longer rises.Can avoid the jack overload to damage like this.
When a fast jack will descend, open pressure-relief valve 17, this moment, lifting piston cylinder 9 interior pressure were washed boiler check valve D7 open, and hydraulic oil flow is got back in the oil storage cylinder 16.This moment, lifting piston 10 declines returned to initial condition.
With 20 tons of jacks, upward stroke is 150 millimeters and is example.
When ordinary jack was not born heavy duty, lifting piston was raised to the extreme higher position from bottommost, and compression piston need be made pump 160 times.
The utility model hoists jack when not bearing heavy duty soon, and lifting piston is raised to the extreme higher position from bottommost, and compression piston only need be made pump 13 times.
When common lifting piston bore heavy duty, lifting piston was raised to the extreme higher position 5 times back and forth from bottommost, and lifting piston back seal spare is promptly destroyed.
The utility model jack that hoists soon, lifting piston is raised to the extreme higher position from bottommost and tests back and forth 500 times, and sealing member is still excellent.
This shows no matter the utility model jack that hoists soon is that remarkable lifting is all being arranged on the work efficiency or on the product durability.
Claims (4)
1, the jack that hoists soon, comprise oil storage cylinder (16), oil storage cylinder (16) links together compression piston cylinder (3) and lifting piston cylinder (9) by oil circuit, be provided with compression piston (2) in the compression piston cylinder (3), be provided with lifting piston (10) in the lifting piston cylinder (9), it is characterized in that: also be provided with the piston cylinder (8) that hoists soon in the described lifting piston (10), piston cylinder (8) hoist soon by stick harness (91) sealing that is arranged on lifting piston cylinder (9) bottom, have one to rise oil return line (5) soon and pass stick harness (91) access and hoist soon in the piston cylinder (8) on the oil storage cylinder (16).
2, the jack that hoists soon as claimed in claim 1 is characterized in that: be provided with pressure-modulation valve (11) in described fast the jack oil circuit.
3, the jack that hoists soon as claimed in claim 1 is characterized in that: also offer overflow ducts (15) in the described lifting piston (10), overflow ducts (15) one ends connect lifting piston cylinder (9), and the other end is connected in the oil storage cylinder (16) by outside oil circuit.
4, the jack that hoists soon as claimed in claim 3, it is characterized in that: boiler check valve E (14) is housed on the described overflow ducts (15), the push rod (13) that is connecting boiler check valve E (14), boiler check valve E (14) is positioned between lifting piston cylinder (9) and the overflow ducts (15), also is provided with position-limited lever (12) on the overflow ducts (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201628959U CN201261702Y (en) | 2008-08-21 | 2008-08-21 | Fast lifting jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201628959U CN201261702Y (en) | 2008-08-21 | 2008-08-21 | Fast lifting jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201261702Y true CN201261702Y (en) | 2009-06-24 |
Family
ID=40808173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201628959U Expired - Fee Related CN201261702Y (en) | 2008-08-21 | 2008-08-21 | Fast lifting jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201261702Y (en) |
-
2008
- 2008-08-21 CN CNU2008201628959U patent/CN201261702Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090624 Termination date: 20140821 |
|
| EXPY | Termination of patent right or utility model |