CN201212010Y

CN201212010Y - Integrated double acting jeck

Info

Publication number: CN201212010Y
Application number: CNU200820053180XU
Authority: CN
Inventors: 彭长胜
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-05-19
Filing date: 2008-05-19
Publication date: 2009-03-25
Anticipated expiration: 2018-05-19

Abstract

The utility model discloses a one-piece double-acting jack which comprises a mandril and a mandril piston, wherein the mandril piston separates a cylinder body into a first oil cylinder, a second oil cylinder and a pressure oil cylinder communicated with an oil intake pipe and an oil return pipe. The one-piece double-acting jack is characterized in that an oil return cylinder and an oil return cylinder piston are arranged in an inner cavity of the mandril, the oil return cylinder piston is connected with one end of a compression spring, and the other end of the compression spring is connected with a fixed screw cap or a fixed clamp spring; the bottom of the oil return cylinder is communicated with an oil return hole and the oil return pipe, a rotary multiple-way valve is arranged at the bottoms of the oil return cylinder and the first oil cylinder, and the valve cores of the multiple-way valve are respectively connected with the oil intake pipe, an oil intake/return pipe outside the valve core of the second oil cylinder, an oil intake/return hole of the first oil cylinder, and the oil return hole at the bottom of the oil return cylinder. The utility model has compact structure, light weight, small size, oil conservation and convenient operation and can realize transversal, lateral and reverse work.

Description

The integral double-acting jack

Technical field

The utility model relates to the integral double-acting jack that a kind of load is the 3-50 ton.Specifically a kind of shaking jack.

Background technology

Existing a kind of split type double-acting hand formula jack, its jack is a split-type design with pressing oil cylinder and fuel tank, does not have the oil return oil cylinder, its volume is big, carry inconvenience, presses that oil cylinder and fuel tank can not be sidelong and put upside down, inconvenient operation.

The utility model content

The purpose of this utility model be to provide a kind of compact conformation, in light weight, volume is little, easy to carry, fuel-efficient, can be laterally, side direction, swing to the integral double-acting hand formula jack of work.

The technical solution of the utility model is: comprise push rod, ram piston, ram piston is separated into first oil cylinder and second oil cylinder with cylinder body, the pressure oil oil cylinder that is communicated with oil inlet and oil return pipe, it is characterized in that, the push rod inner chamber is provided with oil return oil cylinder and oil return oil cylinder piston, the oil return oil cylinder piston is connected with compression spring one end, the other end of compression spring and hold-doun nut or fixedly jump ring be connected, oil return oil cylinder bottom is communicated with fuel return hole and oil return pipe, be provided with rotary multichannel valve in the bottom of the oil return oil cylinder and first oil cylinder, the fuel return hole of the oil inlet and oil return pipe that the spool of multichannel valve and oil inlet and the second oil cylinder spool are outer and the oil inlet and oil return hole of first oil cylinder and oil return oil cylinder bottom is communicated with.

Be provided with in line check valve in the described oil inlet, be provided with return check valve in the described oil return pipe.

Described nut center is provided with pore, and the push rod top is provided with the pore that communicates with pore on the nut.

On first oil cylinder and the second oil cylinder outer wall, be provided with refuel and emptying gas with check valve and tighten the screw rod of check valve.

An oil return oil cylinder is set up in described cylinder body outside.

Be provided with the jump ring that prevents that spool from skidding off between multichannel valve and the spool.

When multiway valve family of power and influence core rotates to a direction, the first oil cylinder oil-feed, second oil cylinder is fuel-displaced; This moment, push rod stretched out; When multiway valve family of power and influence core rotated to another direction, first oil cylinder was fuel-displaced, the second oil cylinder oil-feed; Push rod withdrawal this moment.Realize two-way function; Be by length of spring compressed and bounce-back oil return during work, do not have air,, whole jack can be put upside down or be sidelong if swing to or side direction when work, but equal normal operation.

The utility model compact conformation, in light weight, volume is little, and is fuel-efficient; Easy to operate, can realize laterally, side direction, swing to work.

Description of drawings

Fig. 1 is embodiment 1 a Facad structure scheme drawing;

Construction profile scheme drawing when Fig. 2 stretches out for embodiment 1 push rod;

Construction profile scheme drawing when Fig. 3 is embodiment 1 push rod indentation;

Multiway valve gate control oil inlet and oil return scheme drawing when Fig. 4 stretches out for embodiment 1 push rod;

Multiway valve gate control oil inlet and oil return scheme drawing when Fig. 5 is embodiment 1 push rod indentation.

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

Embodiment 1: be applicable to when push rod is big the situation that the push rod inner chamber is bigger.

With reference to Fig. 1, Fig. 2 and Fig. 4:

Present embodiment comprises presses oil cylinder 1, presses oil cylinder 1 to be communicated with oil inlet 2 and oil return pipe 14; Be provided with in line check valve 18 in the oil inlet 2, be provided with return check valve 19 in the oil returning tube 14.Push rod 3 fuses with ram piston 4, ram piston 4 is separated into first oil cylinder 6 and second oil cylinder 7 with cylinder body 5, the inner chamber of push rod 3 is provided with oil return cylinder block 26, be provided with oil return oil cylinder 8 and oil return oil cylinder piston 9 in the oil return cylinder block, oil return oil cylinder piston top is connected with an end of compression spring 10, the other end of compression spring is connected with nut 11, the nut center is provided with pore 12, the pore 13 at push rod top communicates with nut centre porosity 12, oil return oil cylinder bottom is communicated with oil return pipe 14 and fuel return hole 15, be provided with rotary multichannel valve 16 in the bottom of the oil return oil cylinder and first oil cylinder, be provided with the jump ring 25 that prevents that spool from skidding off between multichannel valve 16 and the spool 21.Be provided with the first oil cylinder oil inlet and oil return pipe 22 and the second oil cylinder oil inlet and oil return pipe 23 in the spool 21.The fuel return hole 15 of the oil inlet and oil return pipe 20 that the oil inlet 2 that spool 21 and spool are outer and the second oil cylinder spool are outer and the oil inlet and oil return hole 17 of first oil cylinder and oil return oil cylinder bottom is communicated with.To control the oil turnover in first oil cylinder and second oil cylinder.On first oil cylinder and the second oil cylinder outer wall, be provided with refuel and emptying gas with check valve and tighten the screw rod 24-1 and the 24-2 of check valve.

When rotary multiway valve family of power and influence core 21 rotates to a direction, press oil cylinder 1 to press oil, in line check valve 18 is opened, return check valve 19 cuts out, hydraulic oil enters oil inlet 2, enters the first oil cylinder oil inlet and oil return pipe 22 in the spool 21 again, and the oil inlet and oil return hole 17 by first oil cylinder enters first oil cylinder 6; Hydraulic oil is pushed to ram piston 4, and this moment, push rod protruded upward; Ram piston 4 is with the oil inlet and oil return pipe 20 of hydraulic oil pressure outside the second oil cylinder spool in second oil cylinder 7, enter the fuel return hole 15 of oil return oil cylinder 8 again by the oil inlet and oil return pipe 23 of second oil cylinder in the spool 21, enter oil return oil cylinder 8 again, during the oil-feed of oil return oil cylinder, oil return oil cylinder piston 9 is up, compression spring 10 compressions, air in the spring is discharged from

pore

12 and 13, when pressing oil cylinder 1 not press oil, the in-oil cylinder pressure of the in-oil cylinder pressure specific pressure oil of oil return is big, by oil return oil cylinder piston 9 and spring 10 with oil pressure to oil return pipe 14, enter through return check valve door 19 again and press oil cylinder 1.

With reference to Fig. 1, Fig. 3 and Fig. 5:

When multiway valve family of power and influence core 21 rotates to another direction, press oil cylinder 1 to press oil, this moment, in line check valve 18 was opened, return check valve 19 cuts out, the second oil cylinder oil inlet and oil return pipe 23 of hydraulic oil in oil inlet 2 and spool 21 enters the oil inlet and oil return pipe 20 of second oil cylinder outside the spool, enters second oil cylinder 7 again; Hydraulic oil is depressed ram piston 4; This moment, push rod was withdrawn downwards, ram piston 4 is gone into the oil inlet and oil return hole 17 of first oil cylinder with the oil pressure of first oil cylinder the inside, enter the fuel return hole 15 of oil return oil cylinder 8 again by the first oil cylinder oil inlet and oil return pipe 22 in the spool 21, enter oil return oil cylinder 8 again, after the oil-feed of oil return oil cylinder, oil return oil cylinder piston 9 is up, the compression spring compression, air in the compression spring is discharged from pore, when pressing oil cylinder not during repress oil, the in-oil cylinder pressure of the in-oil cylinder pressure specific pressure oil of oil return is big, and to oil return pipe 14, oil enters through return check valve door 19 and presses oil cylinder with oil pressure for oil return oil cylinder piston 9 and spring 10 at this moment.

Embodiment 2:

Different with embodiment 1 is that an oil return oil cylinder is set up in the cylinder body outside.Mainly be applicable to push rod hour, the situation that the push rod inner chamber is less.

Claims

1. integral double-acting jack, comprise push rod, ram piston, ram piston is separated into first oil cylinder and second oil cylinder with cylinder body, the pressure oil oil cylinder that is communicated with oil inlet and oil return pipe, it is characterized in that, the push rod inner chamber is provided with oil return oil cylinder and oil return oil cylinder piston, the oil return oil cylinder piston is connected with compression spring one end, the other end of compression spring and hold-doun nut or fixedly jump ring be connected, oil return oil cylinder bottom is communicated with fuel return hole and oil return pipe, be provided with rotary multichannel valve in the bottom of the oil return oil cylinder and first oil cylinder, the fuel return hole of the oil inlet and oil return pipe that the spool of multichannel valve and oil inlet and the second oil cylinder spool are outer and the oil inlet and oil return hole of first oil cylinder and oil return oil cylinder bottom is communicated with.

2. integral double-acting jack according to claim 1 is characterized in that, is provided with in line check valve in the described oil inlet, is provided with return check valve in the described oil return pipe.

3. integral double-acting jack according to claim 1 is characterized in that, described nut center is provided with pore, and the push rod top is provided with the pore that communicates with pore on the nut.

4. integral double-acting jack according to claim 1 is characterized in that, on first oil cylinder and the second oil cylinder outer wall, be provided with refuel and emptying gas with check valve and tighten the screw rod of check valve.

5. integral double-acting jack according to claim 1 is characterized in that, an oil return oil cylinder is set up in described cylinder body outside.