CN2440801Y

CN2440801Y - Hydraulic vertical jack with two pumps

Info

Publication number: CN2440801Y
Application number: CN 00221367
Authority: CN
Inventors: 葛宁远
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-08-09
Filing date: 2000-08-09
Publication date: 2001-08-01
Anticipated expiration: 2010-08-09

Abstract

The utility model discloses a novel hydraulic vertical jack with two pumps. A small pump 1 is connected with an operating handle 2. The hydraulic vertical jack with two pumps is also provided with a big pump 3, and the operating handle 2 is connected with one end of the big pump. The operating handle 2 is movably connected with a supporting rod 4. A valve 6 and a valve 7 are arranged in an oil passage 5. For example, a simple pump needs to pump one hundred times in a whole ascending travel, but two pumps only need thirty times. Therefore, the utility model is rapid and stable on the occasion of the ascending travel.

Description

Novel double pump hydraulic standing jack

The utility model relates to a kind of jack.

The hydraulic standing jack that uses generally only has a little pump at present, so slow, time-consuming, the effort of speed when the idle travel jacking.

The purpose of this utility model is to provide a kind of jacking idle travel not only fast but also steady novel double pump hydraulic standing jack.

In order to address the above problem, the technical solution of the utility model is: set up a big pump, for idle travel promotes used, operating handle is connected with little pump and big pump one end simultaneously, strut bar is between big pump and little pump, operating handle is movably connected on strut bar, and the operating handle linkage is operated big pump and little pump like this, is provided with valve A and valve B in the oil duct.

Good effect of the present utility model: owing to be provided with the idle travel jacking and use big pump and little pump to be connected in operating handle together, like this by operating handle can with little pump combined operation, that is, big pump and little pump work simultaneously during the idle travel jacking.Need pump 100 times as omnidistance empty liter of single pump, double pump only needs pump to get final product for 30 times, and therefore, the utility model is not only fast but also steady when the jacking idle travel.

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Fig. 1 is for commonly using common hydraulic standing jack scheme drawing;

Fig. 2 is the utility model schematic appearance;

Fig. 3 is the utility model local structure scheme drawings.

Embodiment: referring to Fig. 1, Fig. 2 and Fig. 3, a kind of novel double pump hydraulic standing jack, also set up a big pump 3, it is used to aim at the idle travel jacking, idle running is inoperative to the back, top, be provided with valve 6 and valve 7 (idle running could be got back to oil cistern by valve 7 to the oil that the big pump 3 in back, top pumps) in the oil duct 5, operating handle 2 is connected in big pump 3 and little pump 1 one ends simultaneously, strut bar 4 is between big pump 3 and little pump 1, operating handle 2 is movably connected on strut bar 4, be that operating handle 2 is that fulcrum moves up and down with strut bar 4, make reverse up-and-down movement with big pump 3 thereby drive little pump 1.Certainly in the utility model, strut bar 4 also can not be located between little pump 1 and the big pump 3, is located at an end of jack base as strut bar 4, and at this moment, little pump 1 and big pump 3 are made up-and-down movement in the same way.

The utility model use is: lift operating handle 2, as down, then driving little pump 1 down moves, big pump 3 up moves, vice versa, so moves in circles, and arrives the top until idle running, again, valve 7 have certain bearing pressure (valve 7 bearing pressuries are determined in experiment, are specially: when idle travel, the oily impassabitity valve 7 that big pump 3 pumps, can only enter oil cylinder by valve 6, idle running is behind the top, and the oil that big pump 3 pumps can pass through valve 7), so, the oil that this moment, big pump 3 pumped can only enter oil cylinder by valve 6, and can not enter oil cistern by valve 7.Idle running is behind the top, because oil pressure is very high in the oil cylinder, therefore the pressure of valve 6 from oil cylinder to the oil cistern direction very strong (be oil that big pump pumps can not back down valve 6 enter oil cylinder), the oily impassabitity valve 6 that therefore big pump 3 pumps enters oil cylinder, flows back to oil cistern and can only back down valve 7, therefore, idle travel is behind the top, big pump 3 is inoperative, only stays little pump 1 to work on, and also can not feel when people lift operating handle 2 than single pump effort.

Claims

1. novel double pump hydraulic standing jack; little pump (1) is connected with operating handle (2); it is characterized in that: also be provided with big pump (3); operating handle (2) is connected in big pump (3) one ends; operating handle (2) is movably connected on strut bar (4), is provided with valve (6) and valve (7) in the oil duct (5).

2. novel double pump hydraulic standing jack according to claim 1 is characterized in that: strut bar (4) is positioned between big pump (3) and the little pump (1).