CN103723653A

CN103723653A - Length-adjustable jack

Info

Publication number: CN103723653A
Application number: CN201310540711.3A
Authority: CN
Inventors: 孟娥
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-10-26
Filing date: 2013-10-26
Publication date: 2014-04-16

Abstract

Provided is a length-adjustable jack. A button and an adjusting piston are arranged on a shell of the jack, an upper oil cylinder is connected with one end of the button and one end of the adjusting piston, a lower oil cylinder is arranged below the upper oil cylinder, a piston, an ejector rod and an ejector rod head are arranged at one end of the lower oil cylinder, and the upper oil cylinder and the lower oil cylinder are connected through a connecting pipe. When the button is pressed, the ejector rod at one end of the lower oil cylinder is jacked up, the adjusting piston is rotated, the amount of oil entering the lower oil cylinder can be increased or reduced, the stretching length of the ejector rod can be increased or reduced, using purposes can be achieved, demands on multiple aspects are met, and working efficiency is improved.

Description

Can regulate the jack of length

Affiliated technical field

The present invention relates to a kind of jack that can effectively regulate length.

Background technology

At present, it is short that the jack that people use can carry out the stroke of lifting, in a lot of local uses, all can not reach operating needs, both delayed job schedule, increased again user's danger.

Summary of the invention

For overcoming in existing situation, it is short that the jack that people use can carry out the stroke of lifting, in a lot of local uses, all can not reach operating needs, both delayed job schedule, increased again user's dangerous deficiency, the invention provides a kind of jack that can regulate length, it can regulate length as required effectively, meet many-sided demand, improved work efficiency.

The technical solution adopted for the present invention to solve the technical problems is: button and adjusting piston are set on the housing of jack, one end of button is connected with upper cylinder with one end of adjusting piston, below upper cylinder, there is lower oil cylinder, there are piston and push rod and push rod head in one end of lower oil cylinder, between upper cylinder and lower oil cylinder, there is connection pipe to be connected, when pressing button, the push rod of lower oil cylinder one end is by jack-up, rotate adjusting piston, can make the oil mass that enters lower oil cylinder increase or reduce, thereby the length that lengthening or shortening push rod stretch out, reach application target, met many-sided demand, improved work efficiency.

The invention has the beneficial effects as follows, easy to use, improved work efficiency.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the invention will be further described.

Fig. 1 is outward appearance front elevation of the present invention.

Fig. 2 is elevation cross-sectional view of the present invention.

Fig. 3 is the section-drawing of valve block part.

1. upper cylinders in figure, 2. button, 3. upper cylinder, 4. connection pipe, 5. plays oil cylinder, 6. piston, 7. spring, 8. push rod, 9. push rod head, 10. boiler check valve, 11. oil-draining locknuts, 12. housings, 13. length adjustment pistons, 14. regulate buttons.The specific embodiment

In Fig. 1, upper at the housing (12) of jack, there is button (2) above and regulate button (14), there is push rod head (9) below.

In Fig. 2, on the housing (12) of jack, there is button (2) and regulate button (14), also have upper cylinder (1) and upper cylinder (3) and lower oil cylinder (5), there is boiler check valve (10) lower oil cylinder (5) the inside, between upper cylinder and lower oil cylinder, there is connection pipe (4) to be connected, one end of button (2) is connected with upper cylinder (3), one end of length adjustment piston (13) is connected with upper cylinder (1), there are piston (6) and push rod head (9) in one end of lower oil cylinder (5), push rod head (9) is positioned at the top of push rod (8), between piston (6) and push rod head (9), there is spring (7), when pressing button (2), the hydraulic oil of upper cylinder (3) the inside is pushed into lower oil cylinder (5) the inside, push rod (8) extends, rotate adjusting piston (13), can make the oil mass that enters lower oil cylinder (5) the inside increase or reduce, thereby the length that lengthening or shortening push rod (8) stretch out, reach application target, met many-sided demand, improved work efficiency.

In Fig. 3, there are boiler check valve (10) and oil-draining locknut (11) in lower oil cylinder (5) the inside, when pressing button (2), the oil of upper cylinder the inside is pushed into lower oil cylinder (5) the inside, after boiler check valve (10) flows to oil cylinder (5) the inside, can not flow backwards again, push rod will (8) extend, open oil-draining locknut (11), just can remove the foreign material of housing the inside.

Claims

1. the jack that can regulate length, it is characterized in that: button and adjusting piston are set on the housing of jack, one end of button is connected with upper cylinder with one end of adjusting piston, below upper cylinder, there is lower oil cylinder, there are piston and push rod and push rod head in one end of lower oil cylinder, has connection pipe to be connected between upper cylinder and lower oil cylinder.