CN1241820C - Electric jack - Google Patents
Electric jack Download PDFInfo
- Publication number
- CN1241820C CN1241820C CN 02112363 CN02112363A CN1241820C CN 1241820 C CN1241820 C CN 1241820C CN 02112363 CN02112363 CN 02112363 CN 02112363 A CN02112363 A CN 02112363A CN 1241820 C CN1241820 C CN 1241820C
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- China
- Prior art keywords
- piston
- eccentric shaft
- cylinder body
- jack
- oil
- Prior art date
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- Expired - Fee Related
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Abstract
The present invention relates to an electric jack which utilizes own power supplies of vehicles or other transportation vehicles to drive miniature direct current motor. Power is transmitted to an eccentric shaft which uses a crank cam principle by secondary reduction transmission by a worm and a worm wheel. The rotary movement of the eccentric shaft generates the reciprocating movement of a connecting rod, and the eccentric shaft pushes a small piston to move in a reciprocating mode. Consequently, the small piston can suck oil and press oil. Pressure oil can be endlessly input to a cylinder body of a working piston to push a lifting piston rod to lift or fall off. The present invention changes a method for operating a jack manually by an operator who gets into space below vehicle frames of vehicles or other transportation vehicles. The present invention reduces the labor intensity of operators and achieves the goals of safe operation, convenience and high work efficiency.
Description
Technical field
The present invention relates to a kind of lifting device of transport vehicle, particularly belong to a kind of electronic jack field with new-type electronic, mechanical, hydraulic combined transmission.
Background technology
At present the jack of widespread use has the jack of hand-hydraulic and armstrong's patent transmission in automobile repair and maintenance, though its volume is little, in light weight, easy to carry, operating wastes time and energy, and labour intensity is big, work under hard conditions.CN 2334740Y discloses a kind of electric hydaulic jack, as shown in Figure 2, it include housing 6 ', by DC motor 1 ' and power drive and hydraulic jacking device of constituting such as reduction gear apparatus, wherein reduction gear apparatus mainly by retarder 2 ', the transmission shaft 3 that links to each other with reducer output shaft ', be contained in eccentric wheel 4 on the transmission shaft ' and be contained in link rod cover 5 on the eccentric wheel ', it gives eccentric wheel by retarder with transmission of power, the eccentric piston reciprocates that rotatablely moves and generate the crank motion of link rod cover and promote to link to each other with the link rod cover.Hydraulic jacking device comprise described piston 7 ', check valve ball 8 ', let out carry a ball valve 9 ', let out carry a bar 10 ', fuel tank shell 15 ', top 11 ', piston rod 13 ' and piston sleeve 14 ' etc., wherein the lower end of piston sleeve is contained on the housing, the upper end is by nut 12 ' the be fixed on middle part of fuel tank shell, the hoisting piston bar is contained in the piston sleeve, can upper and lowerly move, the top is equipped with in its top.Energising primary piston bar rises automatically, need not people's operation under car body, has automatic, safe advantage.But on its structure, this jack integral structure more greatly, not compact, assemble very inconvenient.
Summary of the invention
The electronic jack of the present invention is exactly in order to overcome the deficiency of existing jack of all kinds, a kind of electronic jack rational in infrastructure, easy to assembly is provided, it can alleviate operator's labour intensity, can provide a kind of safe, convenient, lifting device that is suitable for extensive use that work efficiency is high for the operator again.
The electronic jack of the present invention comprises the miniature cocurrent electromotor of horizontal arrangement, first worm screw is housed on the output shaft of electrical motor, and be meshing with each other with first worm gear, when being fixed as one by screw and second worm screw, first worm gear drives second worm screw rotation, second worm screw is meshing with each other with second worm gear again, form " transmission of worm and wormwheel double reduction " like this with after increasing driving torque, transmission of power is given the eccentric shaft that utilizes the crank cam principle by set pin, rotatablely moving of eccentric shaft generates the crank motion of connecting rod, connecting rod promotes the valve piston crank motion, thereby the oil suction and the oily process of pressure of valve piston have been realized: when the valve piston oil suction, oil in the oil cylinder housing backs down the ball of valve piston cylinder body one side by the oilhole of base, and oil is sucked in the valve piston cylinder body; When pressing oil, the ball that valve piston is pushed the oil in the valve piston cylinder body open the big piston cylinder base by the oilhole of band check valve with pressure oil enters in the big piston cylinder body, thereby the piston rod that jack-up and big piston interference fit fuse, the bottom-to-top-height of jack-up is decided by the overflow weir position that is arranged on big piston cylinder body top.Big piston cylinder body lower end is fixed with screw thread and base, and cylinder shell is fixed in by screw thread and cylinder cap in the upper end of big piston cylinder body, thereby realizes overall fixed.Ejecting screw rod and be bolted in the piston rod by screw thread, is the elemental height when being used to regulate the electronic jack work of the present invention.
When the electronic jack of the present invention was deactivated (realize descend) when needs, the pin of draining the oil need only outwarded winding get final product, and the interior pressure oil of big piston cylinder body this moment is released.
Compared with prior art, the invention has the advantages that the integral structure advantages of simple, easy to assembly, good reliability, the energy is provided by automobile or other transport vehicle self-supply power source, uses safety of operation, convenience, work efficiency high.
Description of drawings
Fig. 1 is the structural representation of the electronic jack of the present invention.
Fig. 2 is a kind of prior art constructions scheme drawing.
The specific embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
Fig. 1 is illustrated as most preferred embodiment.The miniature cocurrent electromotor 1 of the electronic jack of the present invention is horizontal arrangement, first worm screw 2 is housed on the output shaft 101 of electrical motor 1, and be meshing with each other with first worm gear 3, first worm gear 3 is fixed as one by screw 31 and second worm screw 4 and drives 4 rotations of second worm screw simultaneously, second worm screw 4 is meshing with each other with second worm gear 5 again, form " transmission of worm and wormwheel double reduction " like this with after increasing driving torque, transmission of power is given the eccentric shaft 7 that utilizes the crank cam principle by set pin 6, be that eccentric shaft 7 and second worm gear 5 be fixed together be as output shaft drivening rod 8, described eccentric shaft 7 usefulness jump rings 71 are connected with connecting rod 8, rotatablely moving of eccentric shaft 7 generated the crank motion of connecting rod 8, and described connecting rod 8 usefulness pins 81 are connected with valve piston 12; Connecting rod 8 promotes valve piston 9 crank motions, thereby the oil suction and the oily process of pressure of valve piston 9 have been realized: when valve piston 9 oil suctions, oil in oil cylinder housing 10 backs down the ball 13 of valve piston cylinder body 12 1 sides by the oilhole 11 of base, and oil is sucked in the valve piston cylinder body 12; When pressing oil, the ball 15 that valve piston 9 is pushed the oil in the valve piston cylinder body 12 open big piston cylinder body 14 bottoms by the oilhole (not shown) of band check valve with pressure oil enters in the big piston cylinder body 14, thereby the piston rod 17 that jack-up and big piston 16 interference fit fuse, the bottom-to-top-height of jack-up is limited by the overflow weir (not shown) position that is arranged on big piston cylinder body 14 tops.
The lower end of big piston cylinder body 14 is fixing with base 19 with screw thread 18, and cylinder shell 10 is fixed in by screw thread 20 and cylinder cap 21 in the upper end of big piston cylinder body 14, thereby realizes overall fixed.Ejecting screw rod 22 and be bolted in the piston rod 17 by screw thread 23, is the elemental height when being used to regulate the electronic jack work of the present invention.
Using method of the present invention is earlier electronic jack to be positioned over below the jacked object body, and the plug that lights a cigarette with automobile or other transport vehicle self-supply power source inserts in the socket that lights a cigarette of auto body then, with switch connection, promptly can begin jacking; When needs were deactivated (realize descend), the pin 24 of draining the oil need only outwarded winding get final product, and this moment, big piston cylinder body 14 interior pressure oils were released.
Claims (2)
1, a kind of electronic jack, the power drive and the hydraulic jacking device that comprise base (19), constitute by DC motor (1) and reduction gear apparatus, described hydraulic jacking device comprises the large and small piston (16,9) in large and small piston/cylinder (14,12) and the cylinder body, and described large and small piston/cylinder (14,12) axially is and is arranged vertically; Described power drive comprises that also being located at valve piston (9) and reduction gear apparatus exports interaxle one and can drive the reciprocating transmission device of valve piston (9), described transmission device comprises as the eccentric shaft of reduction gear apparatus output shaft (7), eccentric shaft (7) is connected with a connecting rod (8), connecting rod (8) is connected with valve piston (9), be characterised in that: described big piston (16) is provided with the piston rod (17) that constitutes one with big piston, is bolted with in the interior cylindrical cavity of piston rod (17) and ejects screw rod (22).
2, electronic jack as claimed in claim 1 is characterized in that: the lower end of described big piston cylinder body (14) and base (19) are spirally connected fixing, and the upper end of big piston cylinder body (14) and cylinder cap (21) bolt also are fixed in the cylinder shell (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02112363 CN1241820C (en) | 2002-07-02 | 2002-07-02 | Electric jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02112363 CN1241820C (en) | 2002-07-02 | 2002-07-02 | Electric jack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1465519A CN1465519A (en) | 2004-01-07 |
| CN1241820C true CN1241820C (en) | 2006-02-15 |
Family
ID=34141890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02112363 Expired - Fee Related CN1241820C (en) | 2002-07-02 | 2002-07-02 | Electric jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1241820C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102502449A (en) * | 2011-10-11 | 2012-06-20 | 戴志玉 | Oil-absorbing eccentric quick transmission mechanism for jack |
| CN103879917B (en) * | 2014-03-24 | 2017-04-12 | 江苏江北液压机械制造有限公司 | Bidirectional hydraulic integrated block overloading protective device of lifting jack |
| CN106391404A (en) * | 2016-11-17 | 2017-02-15 | 无锡市伟丰印刷机械厂 | High-reliability gluing device used for temperature controller machining |
| CN115258999B (en) * | 2022-07-16 | 2023-07-18 | 浙江轶品科技有限公司 | Electric horizontal hydraulic jack |
-
2002
- 2002-07-02 CN CN 02112363 patent/CN1241820C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1465519A (en) | 2004-01-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20060215 Termination date: 20140702 |
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| EXPY | Termination of patent right or utility model |