CN2553155Y - Pressure booster for hydraulic oil cylinder - Google Patents

Abstract

The utility model relates to a device which pressures the piston in the hydraulic pressure device, which comprises a support seat connected with one end of oil cylinder, a supercharging mechanism is arranged in the oil cylinder and the support seat; a supercharging piston is arranged in the supercharging mechanism, the support seat is provided with unequal-radius coaxial through-holes, wherein a length of small-diameter through-hole is communicated with the inner hole of the oil cylinder, the support seat is provided with a supercharging rod, one end of the supercharging rod passes through the through-hole of the supercharging piston and then connected fixedly with an oil guide tray propped at the end face of the supercharging piston, a plurality of oil guide holes that are corresponding to the large horn mouth of the piston are distributed on the oil guide tray, the transitional shoulder of the supercharging rod is provided with a conical surface, the support seat is provided with an oil cylinder covered on the supercharging rod, when the supercharging rod moves, the transitional conical face on the rod presses the supercharging piston to seal the oil cavity of oil cylinder, the supercharging rod continues to drive the supercharging rod move toward the left, the pressure of the hydraulic pressure oil in the compression oil cylinder is raised so as to increase the pressure of piston, thereby having obvious supercharging effect; no oil leakage occurs on the tapered sealing face during supercharging, moreover pressure retaining time is long.

Description

A kind of supercharging device that is used for hydraulic jack

Technical field

The utility model relates to hydraulic pressure installation, is specifically related to a kind of device that can carry out supercharging to the piston in the hydraulic pressure installation.

Background technique

In the prior art, be arranged on that the floating piston in the pressure charging press-shoot chamber is interior pillar in the supercharging device, in pressurization, its oil sealing principle is to realize by closely cooperating of pillar floating piston and piston cavity, adopts the supercharging device of this structure, requirement on machining accuracy to the part that matches is very high, make the manufacture cost height of device, in addition, the easy draining of this pressure structure, it is long to build the pressure time, and the dwell time is short.

The model utility content

The technical problems to be solved in the utility model is, a kind of supercharging device that overcomes the hydraulic jack of above-mentioned shortcoming in the prior art is provided, and can reduce the fabricating cost of supercharging device, and oil sealing is effective, builds pressure time weak point, and the dwell time is long.

The technological scheme that the utility model provides is: design a kind of supercharging device that is used for hydraulic jack, it is characterized in that, comprise the bearing that is connected with hydraulic jack one end, be arranged on the booster body in described hydraulic jack and the described bearing.

At the above-mentioned supercharging device that is used for hydraulic jack, described booster body comprises in the endoporus that is arranged on described oil cylinder, charged piston with through hole, the left end of described piston hole has a typhon mouth, its right-hand member has a toy trumpet mouth, three sections waney coaxial through-holes are arranged in the described bearing, wherein one section minor diameter through hole is communicated with the endoporus of described oil cylinder, described bearing is provided with the oil inlet hole that is communicated with intermediate throughholes, the described flange that in diameter through hole, is provided with a ring-type, a booster rod is arranged in the through hole of flange, one end of this booster rod is fixedlyed connected with an Oil Guide dish that is resisted against described charged piston end face after passing the through hole of described charged piston, be evenly equipped with the corresponding oil guiding hole of a plurality of and described piston typhon mouth on this Oil Guide dish, one section body of rod that booster rod is arranged in piston hole back of contracting forms a neck bar, the transition shoulder of this neck bar has a conical surface that matches with described toy trumpet mouth, an oil conducting tube that covers on described booster rod outside is arranged on the end face of described flange, the periphery of the other end of this oil conducting tube is connected in the minor diameter through hole of described bearing, bore ends has a female cone hole that matches with the described transition shoulder conical surface in it, is evenly equipped with the corresponding oil guiding hole of a plurality of and described bearing oil inlet hole on the same peripheral wall of described cylindrical shell.

The supercharging device that the utility model provides, compare with existing supercharging device, has following advantage: by booster body is set in device, after the hydraulic jack oil-feed finishes, the booster rod that promotes in the booster body is moved to the left, the transition conical surface on the booster rod is pushed down the toy trumpet mouth on the charged piston, thereby seal the oil pocket of oil cylinder, booster rod continues to drive charged piston and is moved to the left, hydraulic oil in the compression cylinder raises pressure, increase piston pressure, package unit is quick on the draw rapidly, and closing time is short; Pressurized effect is obvious; Conical seal (contact) face is not easy draining in pressurization, build pressure time weak point, and the dwell time is long.

Description of drawings

Fig. 1 is the structure sectional view of the utility model supercharging device.

Embodiment

As shown in Figure 1, the supercharging device that is used for hydraulic jack that is provided is that the end at hydraulic jack 1 has additional a bearing 7, is provided with booster body in hydraulic jack 1 and bearing 7;

As shown in Figure 1, booster body is to be provided with a charged piston 6 with through hole in the endoporus of oil cylinder 1, the left end of piston hole is provided with a typhon mouth 61, its right-hand member is provided with a toy trumpet mouth 62, be provided with three sections waney coaxial through-holes in the bearing 7, by little, in, major diameter distributes from left to right, wherein one section minor diameter through hole is communicated with the endoporus of oil cylinder 1, on bearing 7, be provided with the oil inlet hole 71 that is communicated with intermediate throughholes, in diameter through hole, be provided with the flange 9 of a ring-type, be provided with a booster rod 2 in the through hole of flange 9, one end of this booster rod 2 is fixedlyed connected with an Oil Guide dish 5 that is resisted against charged piston 6 end faces after passing the through hole of charged piston 6, be evenly equipped with the corresponding oil guiding hole 51 of a plurality of and piston 6 typhon mouths 61 on this Oil Guide dish 5, one section body of rod that booster rod 2 is arranged in piston 6 through holes back of contracting forms a neck bar, the transition shoulder of this neck bar has a conical surface 21 that matches with toy trumpet mouth 62, on the end face of flange 9, be provided with an oil conducting tube 8 that covers on booster rod 2 outsides, the periphery of the other end of this oil conducting tube 8 is connected in the minor diameter through hole of bearing 7, bore ends has a female cone hole 81 that matches with the transition shoulder conical surface 21 in it, is evenly equipped with the corresponding oil guiding hole 82 of a plurality of and bearing 7 oil inlet holes 71 on the same peripheral wall of oil conducting tube 8.

Be provided with two round nut 3 and retaining pads that match 4 that are used for locking Oil Guide dish 5 in the end of booster rod 2.

The supercharging principle: as shown in Figure 1, oil inlet hole that pressure oil processes on seat 7 and the F radially circular hole E on 8 enters the A chamber by D, C, B, acts on the piston in the oil cylinder 1, promotes piston to left movement.(described direction is a benchmark with the view aspect all) is when the right-hand member of thrust at booster rod 2, booster rod 2 under thrust to left movement, the toy trumpet mouth 62 of piston 6 cooperates with the bar 2 neck bar conical surfaces 21 and is adjacent to then, make the A chamber with the seat in each pipeline separate the formation enclosed cavity, at this moment booster rod 2 continuation drive piston 6 and move together, compress A chamber volume and then the A cavity pressure is raise, realize the purpose of supercharging.When piston moved right in thrust cancellation that acts on booster rod 2 right-hand members and the A cylinder, the oil conducting tube 5 on the booster rod 2 drove piston 6 and gets back to initial position, i.e. shown position.At work, the effect of the internal taper hole in oil conducting tube 8 holes is to avoid pressure oil directly to impact on the large end face of piston 6, and to pressure oil guiding, in addition, and the also initial position of limited piston 6.

Claims (2)

1, a kind of supercharging device that is used for hydraulic jack is characterized in that, comprises the bearing (7) that is connected with hydraulic jack (1) one end, is arranged on the booster body in described hydraulic jack (1) and the described bearing (7).

2, according to the described supercharging device that is used for hydraulic jack of claim 1, it is characterized in that, described booster body comprises in the endoporus that is arranged on described oil cylinder (1), charged piston (6) with through hole, the left end of described piston hole has a typhon mouth (61), its right-hand member has a toy trumpet mouth (62), three sections waney coaxial through-holes are arranged in the described bearing (7), wherein one section minor diameter through hole is communicated with the endoporus of described oil cylinder (1), described bearing (7) is provided with the oil inlet hole (71) that is communicated with intermediate throughholes, the described flange (9) that in diameter through hole, is provided with a ring-type, a booster rod (2) is arranged in the through hole of flange (9), one end of this booster rod (2) is fixedlyed connected with an Oil Guide dish (5) that is resisted against described charged piston (6) end face after passing the through hole of described charged piston (6), be evenly equipped with the corresponding oil guiding hole (51) of a plurality of and described piston typhon mouth (61) on this Oil Guide dish (5), one section body of rod that described booster rod (2) is arranged in described piston hole back of contracting forms a neck bar, the transition shoulder of this neck bar has a conical surface (21) that matches with described toy trumpet mouth (62), an oil conducting tube (8) that covers on described booster rod (2) outside is arranged on the end face of described flange (9), the periphery of the other end of this oil conducting tube (8) is connected in the minor diameter through hole of described bearing (7), bore ends has a female cone hole (81) that matches with the described transition shoulder conical surface (21) in it, is evenly equipped with the corresponding oil guiding hole (82) of a plurality of and described bearing oil inlet hole (71) on the same peripheral wall of described oil conducting tube (8).