CN2283644Y

CN2283644Y - Hydraulic jack puller

Info

Publication number: CN2283644Y
Application number: CN 96242409
Authority: CN
Inventors: 麻水福
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-10-21
Filing date: 1996-10-21
Publication date: 1998-06-10
Anticipated expiration: 2006-10-21

Abstract

The utility model discloses a hydraulic jack puller, which is an improvement based on the existing hydraulic jack structure. The improvements are that an oil inlet pipe is connected with an oil tank through a plurality of passages, wherein one of the passage ports is arranged on the top of the oil tank, and each oil passage is provided with an oil inlet control part; an oil tank press cover is movably connected with two (or three) puller claws. On one hand, the utility model is provided with a plurality of oil inlet passage ports in different positions, which causes the jack to be capable of sucking oil from the oil tank in the position of transversality, obliquity or inversion; on the other hand, the oil tank press cover is additionally provided with puller claws, which causes the utility model to have double function of a jack and a jack puller.

Description

A kind of hydraulic jack withdrawer

The utility model belongs to a kind of jack withdrawer product.

Before the utility model is made, see also on the market that similar products openly report public offering.At present, a dismounting axle upper-part, as gear, belt pulley etc., mostly by hand or the screw mandrel withdrawer, the screw mandrel withdrawer is not only heavy, operation inconvenience, take side, off-load is inconvenience also

How on common hydraulic jack basis, produce the hydraulic jack withdrawer, become people's a problem.Mainly by the large and small oil cylinder and the large and small piston of in-to-in thereof that are installed on the base, the fuel tank that the outer wall of shell and large tank surrounds is into and out of compositions such as oil pipe, some check valves for its structure of common hydraulic jack.Its principle of work is: when pulling handle valve piston being moved on upper and lower move in small oil tank, the oil in the fuel tank is inhaled into the small oil tank cavity of resorption through an oil inlet; When moving down, the oil of small oil tank cavity of resorption through oil outlet pipe, be pressed into the large tank cavity of resorption, force big piston to move up, thereby jack-up places the weight work of big piston masthead portion to finish, open oil cock, make the oil of large tank cavity of resorption flow back to fuel tank, big piston is slowly fallen power cut-off.But also there is weak point in the hydraulic jack of this structure: it can only push up vertically upward, need oblique top, horizontal top or fall the specific occasion on top not only to operate inconvenience at some, even can not use, moreover do not have the withdrawer function yet, and then placed restrictions on its range of use.

Task of the present utility model provides a kind of hydraulic jack withdrawer.The function that it not only can keep existing hydraulic jack to push up vertically upward, and can realize oblique top, horizontal top easily or fall the top to have the withdrawer function again

Task of the present utility model is achieved through the following technical solutions:

The utility model comprises large and small oil cylinder and the large and small piston of in-to-in thereof that is installed on the base, the fuel tank that shell and the outer wall of large tank surround and relevant to oil pipe, some check valves and oil cock etc. with hydrostatic drive, and its structural feature is:

1. have a plurality of passages to communicate between oil inlet and fuel tank, and have at least a porthole to be positioned at the top of fuel tank, each passage is equipped with the oil-feed control cock;

2. flexibly connected the claw more than 2 on the fuel tank gland

The hydraulic jack withdrawer of said structure, in the specific implementation, oil inlet is groove ringwise in fuel tank bottom, and corresponding annular groove seal cover cap is set; Annular groove communicates with fuel tank through three passages, and the oil inlet passage mouth is positioned at the different parts of fuel tank, and the oil-feed control cock all is set on each passage.

The utility model is compared with prior art products, the oil inlet of existing product has only an oil inlet passage from the fuel tank oil suction, when the jack position changes a little, just may cause to be drawn onto oil, and influence jack work, moreover no withdrawer claw on the fuel tank gland, so do not have the withdrawer function.And having a plurality of oil inlet passage mouths, the oil inlet of improved jack communicates with fuel tank, and each oil inlet passage is equipped with the oil-feed control cock, the jack position changes in any case, and oil inlet always can be drawn onto oil from fuel tank by a porthole, moreover has set up the withdrawer claw on the fuel tank gland.Therefore, this product all can use when horizontal, oblique or inversion state, and also has the double-purpose functional of jack and jack withdrawer.The utility model improves simple in structure, and effect is obvious.

By embodiment the utility model being done to connect a step below in conjunction with accompanying drawing describes in detail.

Fig. 1 shows structural representation for the utility model embodiment integral structure partial cutaway;

Fig. 2 is that Figure 1A-A is to generalized section;

Fig. 3 is the upward view of fuel tank gland among Fig. 1.

Referring to accompanying drawing.Accompanying drawing 1-3 shows an embodiment of the present utility model.From Fig. 1 as seen, present embodiment comprises the large and small oil cylinder 2,3 that is installed in base 9, and the large and

small piston

16,4 of in-to-in, the fuel tank 14 that the outer wall of shell 18 and large tank 2 surrounds, fuel tank gland 17 is connected with the large tank outside thread, fuel tank gland 17 is suitably thickeied and is put 2 earrings 26 in outer periphery and (also can establish 3 earrings, become three-jaw), have a screw on every earrings, flexibly connect (referring to accompanying drawing 1,3) through this hole and connecting panel 24 1 terminal bolts, the other end of connecting panel 24 flexibly connects with the inspection of claw 25 usefulness spiral shells again.

Two pipeline pass-outs are arranged at small oil tank 3 bottoms (seeing Fig. 1,2), and one through in line check valve 6, oil inlet 7, annular groove 7 ', and oil inlet passage 15 communicates with fuel tank 14; Another root feeds the cavity of resorption 11 of large tank 2 through oil outlet 19, oil outlet pipe 8, check valve 10

Fuel tank 14 bottoms are provided with annular groove 7 (referring to Fig. 1,2) and are furnished with seal ring female cap 5, and shell 18 is pushed down ring cover 5 backs and fixed, makes ring cover 5 location with the bottom, and oil inlet 7 communicates with fuel tank 14 through these 3 passages with annular groove 7 '.Porthole 23a, 23b, 23c are arranged on the different parts of

fuel tank

14,2 porthole 23a, 23c are arranged on fuel tank 14 bottoms, porthole 23b is with the top of pipe stretching to fuel tank 14, so that jack uses when being inverted, each oil inlet passage 15 is equipped with oil-feed control cock 13a, 13b, 13c.

An inlet valve 13b and annular groove 7 ' and oil inlet passage 15 structural relations have been shown among Fig. 1.Ring cover 5 makes annular groove 7 ' and fuel tank 14 isolated, annular groove 7 ' only communicates with fuel tank 14 by these several oil inlet passages 15, form oil circuit with oil inlet 7, the switching seal ring 12 of the precession of inlet valve and this oil circuit of back-out may command is for preventing leakage of oil setting

The operating process of the utility model hydraulic jack withdrawer roughly is:

When 1, using as the hydraulic jack withdrawer:

On the earrings of fuel tank gland 17 with bolt with connecting panel 24, claw 25 flexibly connects, select the appropriate location after, the leading hook of claw 25 hooked needs the axle of dismounting upper-part, as gear, the edge of belt pulley, the operation jack can reach the dismounting purpose.If in some specific occasions, when needing with jack inversion dismounting, i.e. precession oil-feed control cock 13a, 13c.Generally speaking, when operation, should note closing the oil-feed control cock of suction less than the oil inlet of oil.

When 2, using as hydraulic jack:

Remove connecting panel 24, behind the claw 25, promptly can be used as hydraulic jack and use.

1., during vertical top lifting, close inlet valve, open all the other 2 inlet valves or only drive an inlet valve, other step and existing hydraulic jack are just the same.

2., when oblique top or horizontal top, only open 1 inlet valve of position, the end.

Claims

1, a kind of hydraulic jack withdrawer, it comprises the large and small oil cylinder (2 that is installed on the base (9), 3) and the large and small piston (16 of in-to-in, 4), the fuel tank (14) that shell (18) and the outer wall of large tank ⑵ surround and relevant to oil pipe (7 with hydrostatic drive, 8), some check valves (6,10) and oil cock (21) etc., it is characterized in that:

(1) have a plurality of passages (15) to communicate between oil pipe (7) and fuel tank (14), and have at least a porthole (23b) to be positioned at the top of fuel tank (14), each passage (15) be equipped with the oil-feed control cock (13a, 13b, 13c);

(2) flexibly connected the claw (25) more than 2 on the fuel tank gland (17).

2, a kind of hydraulic jack withdrawer according to claim 1, it is characterized in that: after fuel tank gland (17) thickening, the periphery is provided with two earrings (26), every earrings (26) has a screw, end through this Kong Yuyi piece connecting panel (24) flexibly connects, and the other end of connecting panel (24) flexibly connects with claw (25) again.

3, a kind of hydraulic jack withdrawer according to claim 1 and 2, it is characterized in that: oil inlet (7) is groove (7 ') ringwise in fuel tank (14) bottom, a corresponding seal ring female cap (5) is arranged on the annular groove (7 '), and annular groove (7 ') communicates with fuel tank (14) through three passages (15).