CN204851852U

CN204851852U - Pull rod formula hydraulic cylinder's back cylinder cover

Info

Publication number: CN204851852U
Application number: CN201520520534.7U
Authority: CN
Inventors: 邓清玉
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-07-17
Filing date: 2015-07-17
Publication date: 2015-12-09
Anticipated expiration: 2025-07-17

Abstract

The utility model discloses a pull rod formula hydraulic cylinder's back cylinder cover relates to the hydraulic cylinder field, and the front and back of cylinder cap main part, the left and right sides are symmetrical structure, and a recess that is used for rabbeting the cylinder is offered at the preceding terminal surface middle part of this cylinder cap main part, and this grooved underside middle part is equipped with one and leads to to the oil feed passageway of the rear end face of cylinder cap main part, the oil feed passageway is equipped with an extension at the rear end face of cylinder cap main part, and this extension is equipped with the external screw thread that is used for connecting oil pipe. The utility model discloses beneficial effect: the oil feed passageway is difficult to be blockked up, because simple structure and symmetry are easier during the casting, is difficult for appearing casting defects moreover.

Description

A kind of back cylinder cover of pull-rod type hydraulic jack

Technical field

The utility model relates to hydraulic jack field, more specifically a kind of back cylinder cover of pull-rod type hydraulic jack.

Background technique

Hydraulic jack can carry out the various operations such as lifting, bending, alignment, extruding, shearing, rivet welding, jacking, stretching, dismounting, punching, building iron extruding, bridge, engineering machinery, use extensively, and hydraulic jack is of a great variety, pull-rod type hydraulic jack uses wider a kind of oil cylinder, and pull-rod type hydraulic jack generally comprises the compositions such as cylinder barrel, piston rod, cylinder cap, piston, Sealing.

With reference to shown in Fig. 5 and 6, the back cylinder cover of the pull-rod type hydraulic jack oil inlet passage 1a that is generally provided with fixed mechanism, groove 2a and communicates with groove 2a in the market, oil hydraulic cylinder is general, but some is because of structural limitations, often do not allow from the oil-feed of oil cylinder side, and require from cylinder bottom oil-feed, ordinary construction is difficult to meet above requirement, due to complicated structure during back cylinder cover simultaneously with die casting oil-feed from the side, it is more difficult that casting is got up, install hydraulic jack time should be noted filler opening towards so that connected pipes, easily block during use.

Summary of the invention

The utility model provides a kind of back cylinder cover of pull-rod type hydraulic jack, and object is the shortcoming solving above-mentioned existence.

The utility model adopts following technological scheme:

A kind of back cylinder cover of pull-rod type hydraulic jack, comprise a head body, the all around of this head body is symplex structure, offering one for rabbeting the groove of cylinder barrel, being provided with the oil inlet passage that passes to the ear end face of head body in the middle part of this groove floor in the middle part of the front-end face of this head body; Above-mentioned oil inlet passage is provided with an extension part at the ear end face of head body, and this extension part is provided with the outside thread for connected pipes.

Further, the rear sidewall of above-mentioned head body is provided with a round boss around oil inlet passage.

Further, above-mentioned head body is also provided with fixed mechanism, and this fixed mechanism comprises through hole and locking nut, and this through hole extends to the ear end face of head body from the front-end face of head body.

From the above-mentioned description to the utility model structure, the utility model tool has the following advantages:

The symmetrical configuration of the utility model back cylinder cover, simple, decrease difficulty during casting, reduce the probability that casting defect appears in back cylinder cover; The oil inlet passage of the utility model back cylinder cover is straight line type passage, and passage not easily blocks, and ensure that the normal operation of oil hydraulic cylinder.

Accompanying drawing explanation

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

Fig. 2 is plan view of the present utility model;

Fig. 3 is rear view of the present utility model;

Fig. 4 is sectional view of the present utility model;

Fig. 5 is the structural representation of existing back cylinder cover;

Fig. 6 is the sectional view of existing back cylinder cover.

Embodiment

Embodiment of the present utility model is described with reference to the accompanying drawings.

Referring to figs. 1 through Fig. 4, a kind of back cylinder cover of pull-rod type hydraulic jack, comprise the head body that is cuboid, the all around of this head body is symplex structure, offering one in the middle part of the front-end face of this head body for rabbeting the groove 2 of cylinder barrel (not shown in FIG.), in the middle part of the bottom surface of this groove 2, being provided with the oil inlet passage 1 that passes to the ear end face of head body; This oil inlet passage 1 is rounded and be provided with an extension part 11 at the ear end face of head body, and this extension part 11 is provided with the outside thread for connected pipes (not shown in FIG.).

Referring to figs. 1 through Fig. 4, the rear sidewall of head body is provided with a round boss 4 around oil inlet passage 1.Head body is equipped with fixed mechanism 3 in the jointing place of its four sides sidewall, this fixed mechanism 3 comprises through hole 301 and locking nut 302, this through hole 301 extends to the ear end face of head body from the front-end face of head body, for arranging attachment post (not shown in FIG.) and being locked by locking nut 302, the other end of attachment post (not shown in FIG.) is arranged at front end housing main body (not shown in FIG.).

Above are only embodiment of the present utility model, but design concept of the present utility model is not limited thereto, all changes utilizing this design the utility model to be carried out to unsubstantiality, all should belong to the behavior of invading the utility model protection domain.

Claims

1. the back cylinder cover of a pull-rod type hydraulic jack, comprise a head body, it is characterized in that: all around of described head body is symplex structure, offering one in the middle part of the front-end face of this head body for rabbeting the groove of cylinder barrel, in the middle part of this groove floor, being provided with the oil inlet passage that passes to the ear end face of head body; Described oil inlet passage is provided with an extension part at the ear end face of head body, and this extension part is provided with the outside thread for connected pipes.

2. the back cylinder cover of a kind of pull-rod type hydraulic jack as claimed in claim 1, is characterized in that: the rear sidewall of described head body is provided with a round boss around oil inlet passage.

3. the back cylinder cover of a kind of pull-rod type hydraulic jack as claimed in claim 1, it is characterized in that: described head body is also provided with fixed mechanism, this fixed mechanism comprises through hole and locking nut, and this through hole extends to the ear end face of head body from the front-end face of head body.