CN201842610U - Hydraulic jack - Google Patents
Hydraulic jack Download PDFInfo
- Publication number
- CN201842610U CN201842610U CN2010205829704U CN201020582970U CN201842610U CN 201842610 U CN201842610 U CN 201842610U CN 2010205829704 U CN2010205829704 U CN 2010205829704U CN 201020582970 U CN201020582970 U CN 201020582970U CN 201842610 U CN201842610 U CN 201842610U
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- CN
- China
- Prior art keywords
- hydraulic
- piston rod
- jack
- piston
- screw shaft
- 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 provides a hydraulic jack, comprising a hydraulic oil tank, a hydraulic pump, a hydraulic cylinder, a rocker arm, a piston and a piston rod, wherein the hydraulic pump is connected with a hydraulic oil cylinder, and the rocker arm is connected with the hydraulic pump; the hydraulic oil tank is communicated with the hydraulic cylinder; and the piston and the piston rod are positioned in the hydraulic cylinder. The hydraulic jack also comprises a screw shaft, and screw threads are arranged on the piston rod and are matched with screw threads on the screw shaft. As the structure is adopted, when the length of the piston rod can not jack up a heavy object to the needed height, the screw shaft is connected onto the piston rod through the screw threads, and therefore the operating stroke of the jack is increased under the condition that the height of the hydraulic oil cylinder is invariable. The hydraulic jack also has the beneficial effects of simple structure, convenience for use, high practicality, low cost and the like.
Description
Technical field
The utility model relates to a kind of hydraulic jack, particularly a kind of rocker-arm hydraulic jack.
Background technology
Present rocker-arm hydraulic jack is made up of hydraulic reservoir, Hydraulic Pump, hydraulic actuating cylinder, rocking arm, piston and piston rod, and Hydraulic Pump links to each other with hydraulic ram, and rocking arm links to each other with Hydraulic Pump, and hydraulic reservoir is communicated with hydraulic actuating cylinder, and piston and piston rod are arranged in hydraulic actuating cylinder.Because the length of piston rod is subjected to the restriction of hydraulic actuating cylinder height, the stroke that causes piston rod movement also is restricted and can not be with weight jack-up to the height that needs, thereby makes troubles for the application of jack.
Summary of the invention
The purpose of this utility model provides a kind of simple in structure, can not be subjected to the hydraulic actuating cylinder height restriction and with weight jack-up to the rocker-arm jack that needs height.
In order to achieve the above object, the technical scheme that the utility model adopted is: comprise hydraulic reservoir, Hydraulic Pump, hydraulic actuating cylinder, rocking arm, piston and piston rod, Hydraulic Pump links to each other with hydraulic ram; rocking arm links to each other with Hydraulic Pump; hydraulic reservoir is communicated with hydraulic actuating cylinder, and piston and piston rod are arranged in hydraulic actuating cylinder, also comprises screw shaft; piston rod is provided with screw thread, and the screw thread on this screw thread and the screw shaft is complementary.
Owing to adopted said structure, when the length of piston rod inadequately with weight jack-up during to the height that needs, can be with screw shaft by being threaded onto on the piston rod, thus make jack under hydraulic ram height unmodified situation, improved the forced stroke of jack.The utility model also has simple in structure, and is easy to use, practicality height, the beneficial effect that waits with low cost.
Description of drawings
Fig. 1 is the scheme drawing of a kind of embodiment of the utility model hydraulic jack.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, hydraulic jack of the present utility model comprises hydraulic reservoir 1, Hydraulic Pump 8, hydraulic actuating cylinder 2, rocking arm 3, piston 4 and piston rod 5; rocking arm 3 links to each other with Hydraulic Pump 8; Hydraulic Pump 8 links to each other with hydraulic reservoir 1; hydraulic reservoir 1 is communicated with hydraulic actuating cylinder 2, and piston 4 and piston rod 5 are arranged in hydraulic actuating cylinder 2, also comprise screw shaft 6; piston rod 5 is provided with screw thread, and the screw thread 9 on this screw thread and the screw shaft 6 is complementary.
During use, act on Hydraulic Pump 8, by the oil pressure in the hydraulic reservoir 1 is gone into hydraulic actuating cylinder 2, with piston 4 and piston rod 5 jack-up by rocking arm 3.When the length of piston rod during to the height that needs, can be connected to screw shaft 6 weight jack-up on the piston rod 5 by screw thread 9, thereby make jack under hydraulic ram height unmodified situation inadequately, improved the forced stroke of jack.The utility model also has simple in structure, and is easy to use, practicality height, the beneficial effect that waits with low cost.
Claims (1)
1. hydraulic jack, it is characterized in that, comprise hydraulic reservoir, Hydraulic Pump, hydraulic actuating cylinder, rocking arm, piston and piston rod, Hydraulic Pump links to each other with hydraulic ram, and rocking arm links to each other with Hydraulic Pump, and hydraulic reservoir is communicated with hydraulic actuating cylinder, piston and piston rod are arranged in hydraulic actuating cylinder, also comprise screw shaft, piston rod is provided with screw thread, and the screw thread on this screw thread and the screw shaft is complementary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205829704U CN201842610U (en) | 2010-10-29 | 2010-10-29 | Hydraulic jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205829704U CN201842610U (en) | 2010-10-29 | 2010-10-29 | Hydraulic jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201842610U true CN201842610U (en) | 2011-05-25 |
Family
ID=44037506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205829704U Expired - Fee Related CN201842610U (en) | 2010-10-29 | 2010-10-29 | Hydraulic jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201842610U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109896463A (en) * | 2017-12-07 | 2019-06-18 | 中冶宝钢技术服务有限公司 | Foreboard assembly and disassembly methods on bilateral scissors device |
-
2010
- 2010-10-29 CN CN2010205829704U patent/CN201842610U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109896463A (en) * | 2017-12-07 | 2019-06-18 | 中冶宝钢技术服务有限公司 | Foreboard assembly and disassembly methods on bilateral scissors device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110525 Termination date: 20111029 |