CN2769246Y

CN2769246Y - Hydraulic jack

Info

Publication number: CN2769246Y
Application number: CN 200520080740
Authority: CN
Inventors: 张波
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-02-26
Filing date: 2005-02-26
Publication date: 2006-04-05
Anticipated expiration: 2015-02-26

Abstract

The utility model relates to a hydraulic jack which has the advantage of convenient use. The utility model comprises a hydraulic pump, a hydraulic cylinder, an oil tank, an oil pipe, an oil feed one-way valve, an oil drain valve, a lever and a jack base, wherein the hydraulic pump, the hydraulic cylinder and the oil tank are respectively and fixedly connected with the jack base, and one end of the lever is connected with the jack base in counterrotating mode. The hydraulic pump comprises a pump body and a dynamic plunger, wherein the lower part of the pump body is provided with a dynamic oil chamber, and the dynamic plunger is arranged at the upper part of the dynamic oil chamber arranged in the pump body. The hydraulic cylinder comprises a hydraulic cylinder body and a hydraulic cylinder piston, wherein the lower part of the hydraulic cylinder body is provided with a hydraulic cylinder oil chamber, and the hydraulic cylinder piston is arranged at the upper part of the hydraulic cylinder oil chamber arranged in the hydraulic cylinder body. The side wall of the jack base is fixedly connected with a supporting rack which is connected with a supporting rod. The supporting rack and the supporting rod can be movably connected with each other up and down, and the upper part of the supporting rod is provided with a retractable spring. The upper part of the retractable spring is connected with the lower end face of the supporting rack, and the lower end of the supporting rod is connected with a retractable wheel.

Description

Hydraulic jack

Affiliated technical field

The utility model relates to hydraulic jack.

Background technology

The hydraulic jack that people are common is comprising manual plunger Hydraulic Pump, hydraulic actuating cylinder, fuel tank, oil pipe, check valve, oil cock, lever, oil tank frame; Manual plunger Hydraulic Pump, hydraulic actuating cylinder, fuel tank are captiveed joint with oil tank frame respectively; Hydraulic Pump has the pump housing of oil pocket, the piston of oil pocket top in the pump housing comprising the below, the relative rotary connection of lever with piston, and oil pocket communicates with oil pipe, and the oil pipe centre is provided with check valve, and oil pipe communicates with fuel tank; Hydraulic actuating cylinder has the cylinder body of oil pocket, the piston of oil pocket top in the cylinder body comprising the below, and oil pocket communicates with oil pipe, is provided with oil cock in the middle part of the oil pipe; Close oil cock during work and mention lever, the piston of the pump housing just drive to be risen, and the oil pocket sealed volume in the pump housing increases, and the fluid in the fuel tank enters oil pocket in the pump housing by oil pipe and check valve; Depress lever, the fluid in the pump housing oil pocket flows to oil pocket in the hydraulic actuating cylinder by oil pipe, and the oil pocket sealed volume in the hydraulic actuating cylinder is increased, and the piston that the result promotes in the hydraulic actuating cylinder rises together with weight; This kind hydraulic jack is owing to the oil mass of oil pocket output in Hydraulic Pump is constant, and inefficiency uses trouble.

Summary of the invention

The utility model purpose provides a kind of hydraulic jack easy to use.

For achieving the above object, the technical solution adopted in the utility model is: a kind of hydraulic jack, comprising Hydraulic Pump, hydraulic actuating cylinder, fuel tank, oil pipe, in line check valve, oil cock, lever, jack base; Hydraulic Pump, hydraulic actuating cylinder, fuel tank are captiveed joint with jack base respectively; The relative rotary connection of lever one end with jack base; Hydraulic Pump has the pump housing of power oil pocket, the power plunger of power oil pocket top in the pump housing comprising the below; Hydraulic actuating cylinder has the hydraulic cylinder of hydraulic actuating cylinder oil pocket, the hydraulic cylinder piston of hydraulic actuating cylinder oil pocket top in the hydraulic cylinder comprising the below; Its characteristics are: captive joint one bracing frame on the jack base sidewall, connect a strut bar on the bracing frame, bracing frame can up and downly be connected with strut bar, and a coil tension spring is installed on strut bar top, connect the bracing frame lower surface on the coil tension spring, the strut bar lower end connects an expanding pulley.

Owing to have expanding pulley in the utility model, when using the utility model, the utility model has been put into the weight bottom or taken out the utility model from the weight bottom, simple to operate, easy to use.

Description of drawings

Fig. 1 is a kind of structural representation of the present utility model;

Fig. 2 is the structural representation of a kind of hydraulic actuating cylinder in the utility model;

Fig. 3 is the structural representation of a kind of unsteady flow cylinder in the utility model.

The specific embodiment

Embodiment 1: a kind of hydraulic jack, as shown in Figure 1, 2, 3, comprising Hydraulic Pump, hydraulic actuating cylinder, fuel tank 10, oil pipe, in line check valve, oil cock 6) lever 9, jack base 7; Hydraulic Pump, hydraulic actuating cylinder, fuel tank 10 are captiveed joint with jack base 7 respectively; Lever 9 one ends and jack base 7 relative rotary connections; Hydraulic Pump has the pump housing 13 of power oil pocket 14, the power plunger 12 of power oil pocket 14 tops in the pump housing comprising the below; Hydraulic actuating cylinder has the hydraulic cylinder 23 of hydraulic actuating cylinder oil pocket, the hydraulic cylinder piston 11 of hydraulic actuating cylinder oil pocket top in the hydraulic cylinder comprising the below; Captive joint one bracing frame 16 on jack base 7 sidewalls, connect a strut bar 15 on the bracing frame 16, bracing frame 16 can up and downly be connected with strut bar 15, a coil tension spring 17 is installed on strut bar 15 tops, connect bracing frame 16 lower surfaces on the coil tension spring 17, strut bar 15 lower ends connect an expanding pulley 18; In the present embodiment, have oil circuit in the jack base 7, hydraulic jack also comprises unsteady flow cylinder, variable pressure valve; The unsteady flow cylinder comprising the top of the closing cover 34 of top, below have the variable flow cylinder body 25 of unsteady flow cavity 29, be positioned at unsteady flow cavity 29 variable flow piston 30, be positioned at unsteady flow cavity variable flow piston top variable flow spring 32, be positioned at the fourth headpin plug 28 of unsteady flow cavity variable flow piston below; Closing cover 34 and variable flow cylinder body 25 are airtight captives joint; Connect closing cover 34 on the variable flow spring 32, under connect variable flow piston 30, have unsteady flow check valve 31 in the variable flow piston 30, unsteady flow check valve 31 respectively with variable flow piston on, the unsteady flow cavity 29 of below communicates, fourth headpin plug 28 upper surfaces respectively with unsteady flow check valve 31 bottom pores, variable flow piston 30 lower surfaces are corresponding, variable flow cylinder body 25 bottoms have chargine line 27 and fourth headpin plug through hole 26, chargine line 27 tops communicate with the unsteady flow cavity 29 of variable flow piston below, chargine line 27 bottoms communicate with fuel tank 10, fourth headpin plug 28 top fourth heads are positioned at the unsteady flow cavity 29 of variable flow piston bottom, fourth headpin plug 28 bottoms are positioned at fourth headpin plug through hole 26 and corresponding with it, fourth headpin plug 28 bottoms slide up and down sealing with fourth headpin plug through hole 26 madial walls and are connected, fourth headpin plug through hole 26 tops communicate with the unsteady flow cavity 29 of variable flow piston 30 bottoms, have oil transportation path and output check valve 33 in the closing cover 34; Output check valve 33 communicates with the unsteady flow cavity 29 of oil transportation path, variable flow piston 30 tops respectively, and oil circuit is comprising hydraulic actuating cylinder oil circuit 24 in the jack base 7, and the oil transportation path communicates with the hydraulic actuating cylinder oil pocket by described external oil pipe, hydraulic actuating cylinder oil circuit 24; Variable pressure valve comprising the jack base 7 that has transformation cavity, transformation fluid path, oil pipe fluid path, be positioned at the unidirectional valve ball 22 of transformation, transformation spring 21, baffle plate, plus-minus screw 20, the sealed screw 19 of transformation cavity, oil pipe fluid path one end communicates with power oil pocket 14 in the Hydraulic Pump, the other end communicates with transformation cavity one end and corresponding with unidirectional valve ball 22 front ends of transformation, and transformation fluid path one end communicates with the transformation cavity in the unidirectional valve ball of transformation 22 rears, plus-minus screw 20 the place aheads, the other end communicates with the hydraulic actuating cylinder oil pocket; The unidirectional valve ball 22 back terminates of transformation, captiveing joint with transformation spring 21 in the baffle plate back, connects plus-minus screw 20 behind the transformation spring 21, and plus-minus screw 20 is threaded with transformation cavity madial wall, connect sealed screw 19 behind the plus-minus screw 20, sealed screw 19 is connected with transformation cavity madial wall thread seal; Oil transportation path in the closing cover 34 communicates with hydraulic actuating cylinder oil circuit 24, the transformation fluid path in the variable pressure valve in the jack base 7 respectively by external oil pipe; Fourth headpin plug through hole 26 in the variable flow cylinder body 25 communicates with power oil pocket 14, the oil pipe fluid path in the jack base 7 in the pump housing 13 respectively by jack base 7 internal oil passages; Have the in line check valve ball on fourth headpin plug through hole in the variable flow cylinder body and jack base 7 internal oil passages between the fuel tank, on jack base 7 oil circuits between hydraulic actuating cylinder oil pocket and the fuel tank oil cock 6 is installed; In the present embodiment, captive joint one fixed pulley 8 on the jack base 7 of lever 9 belows, lever 9 other end captive joints one hauling rope 5 one ends, hauling rope 5 pass from fixed pulley 8 belows and are connected with 8 one-tenth rollings of fixed pulley; In the present embodiment, hydraulic jack also comprises pressure frame 2, and pressure frame 2 is comprising underframe 1, connecting rod 3, depression bar 4; Connecting rod 3 lower ends are connected with underframe 1 hinge, captive joint with depression bar 4 one ends in connecting rod 3 tops, captive joint with hauling rope 5 other ends in connecting rod 3 upper ends.

Owing to used hauling rope in the present embodiment, connect power by hauling rope one end, can make human body away from playing weight, use the utility model safety, convenience.

Claims

1, a kind of hydraulic jack is comprising Hydraulic Pump, hydraulic actuating cylinder, fuel tank (10), oil pipe, in line check valve, oil cock (6), lever (9), jack base (7); Hydraulic Pump, hydraulic actuating cylinder, fuel tank (10) are captiveed joint with jack base (7) respectively; Lever (9) one ends and the relative rotary connection of jack base (7); Hydraulic Pump has the power plunger (12) of power oil pocket (14) top in the pump housing (13), the pump housing of power oil pocket (14) comprising the below; Hydraulic actuating cylinder has the hydraulic cylinder piston (11) of the hydraulic actuating cylinder oil pocket top in the hydraulic cylinder (23), hydraulic cylinder of hydraulic actuating cylinder oil pocket comprising the below; It is characterized in that: captive joint one bracing frame (16) on jack base (7) sidewall, bracing frame (16) is gone up and is connected a strut bar (15), bracing frame (16) can up and downly be connected with strut bar (15), a coil tension spring (17) is installed on strut bar (15) top, connect bracing frame (16) lower surface on the coil tension spring (17), strut bar (15) lower end connects an expanding pulley (18).

2, hydraulic jack according to claim 1 is characterized in that: described jack base has oil circuit in (7), and described hydraulic jack also comprises unsteady flow cylinder, variable pressure valve; The unsteady flow cylinder comprising the top of the closing cover (34) of top, below have the variable flow cylinder body (25) of unsteady flow cavity (29), be positioned at unsteady flow cavity (29) variable flow piston (30), be positioned at unsteady flow cavity variable flow piston top variable flow spring (32), be positioned at the fourth headpin plug (28) below the unsteady flow cavity variable flow piston; Closing cover (34) is captiveed joint with variable flow cylinder body (25) is airtight; Connect closing cover (34) on the variable flow spring (32), under connect variable flow piston (30), have unsteady flow check valve (31) in the variable flow piston (30), unsteady flow check valve (31) respectively with variable flow piston on, the unsteady flow cavity (29) of below communicates, fourth headpin plug (28) upper surface respectively with unsteady flow check valve (31) bottom pore, variable flow piston (30) lower surface is corresponding, variable flow cylinder body (25) bottom has chargine line (27) and fourth headpin plug through hole (26), chargine line (27) top communicates with the unsteady flow cavity (29) of variable flow piston below, chargine line (27) bottom communicates with described fuel tank (10) by the interior oil circuit of jack base (7), fourth headpin plug (28) top fourth head is positioned at the unsteady flow cavity (29) of variable flow piston bottom, fourth headpin plug (28) bottom is positioned at fourth headpin plug through hole (26) and corresponding with it, fourth headpin plug (28) bottom slides up and down sealing with fourth headpin plug through hole (26) madial wall and is connected, fourth headpin plug through hole (26) top communicates with the unsteady flow cavity (29) of variable flow piston (30) bottom, has oil transportation path and output check valve (33) in the closing cover (34); Output check valve (33) communicates with the unsteady flow cavity (29) of oil transportation path, variable flow piston (30) top respectively, the interior oil circuit of described jack base (7) is comprising hydraulic actuating cylinder oil circuit (24), and the oil transportation path communicates with described hydraulic actuating cylinder oil pocket by described external oil pipe, hydraulic actuating cylinder oil circuit (24); Variable pressure valve is comprising having the transformation cavity, transformation fluid path, the jack base (7) of oil pipe fluid path, be positioned at the unidirectional valve ball of transformation (22) of transformation cavity, transformation spring (21), baffle plate, plus-minus screw (20), sealed screw (19), oil pipe fluid path one end communicates with power oil pocket (14) in the described Hydraulic Pump, the other end communicates with transformation cavity one end and is corresponding with the unidirectional valve ball of transformation (22) front end, transformation fluid path one end and the unidirectional valve ball of transformation (22) rear, the transformation cavity in plus-minus screw (20) the place ahead communicates, the other end communicates with the hydraulic actuating cylinder oil pocket; The unidirectional valve ball of transformation (22) back terminates, captive joint with transformation spring (21) in the baffle plate back, connect plus-minus screw (20) behind the transformation spring (21), plus-minus screw (20) is threaded with transformation cavity madial wall, connect sealed screw (19) behind the plus-minus screw (20), sealed screw (19) is connected with transformation cavity madial wall thread seal; Oil transportation path in the closing cover (34) communicates with hydraulic actuating cylinder oil circuit (24), the transformation fluid path in the variable pressure valve in the jack base (7) respectively by external oil pipe; Fourth headpin plug through hole (26) in the variable flow cylinder body (25) by jack base (7) internal oil passages respectively with the pump housing (13) in power oil pocket (14), jack base (7) in oil pipe fluid path communicate; Have the in line check valve ball on fourth headpin plug through hole in the variable flow cylinder body and jack base (7) internal oil passages between the fuel tank, on the jack base between hydraulic actuating cylinder oil pocket and the fuel tank (7) oil circuit oil cock (6) is installed.

3, hydraulic jack according to claim 2, it is characterized in that: the jack base (7) of described lever (9) below is gone up captive joint one fixed pulley (8), lever (9) other end captive joint one hauling rope (5) one ends, hauling rope (5) passes from fixed pulley (8) below and becomes rolling to be connected with fixed pulley (8).

4, hydraulic jack according to claim 3 is characterized in that: described hydraulic jack also comprises pressure frame (2), and pressure frame (2) is comprising underframe (1), connecting rod (3), depression bar (4); Connecting rod (3) lower end is connected with underframe (1) hinge, captives joint with depression bar (4) one ends in connecting rod (3) top, captives joint with described hauling rope (5) other end in connecting rod (3) upper end.