CN201217591Y

CN201217591Y - Oil hydraulic buffer

Info

Publication number: CN201217591Y
Application number: CNU2008201143021U
Authority: CN
Inventors: 贾砚华; 刘全和; 王秀华
Original assignee: HEBEI DONGFANG FUDA MACHINERY CO Ltd
Current assignee: HEBEI DONGFANG FUDA MACHINERY CO Ltd
Priority date: 2008-05-08
Filing date: 2008-05-08
Publication date: 2009-04-08
Anticipated expiration: 2018-05-08

Abstract

Disclosed is an oil buffer, comprising a pressure cylinder, a guide sleeve, a plunger barrel, a threaded sleeve, an upper spring seat, an end cap and a steam exhaust port; and the oil buffer is provided with a downward one-way air let structure at an exhaust hole of the end cap, therefore, when encountering the elevator car or counterweight impact, the end cap exhaust hole is in the closed state under high air pressure in the plunger barrel, the oil will not be sprayed out of the plunger barrel through the exhaust hole and will not be lost, thereby reducing the maintenance work brought by loss of oil.

Description

Oleo gear

Technical field

The utility model relates to a kind of energy disperser, particularly a kind of oleo gear.

Background technology

Oleo gear is used in the elevator hoistways bottom, when lift car or counterweight landing, to lift car or to restarting the effect of buffering stop.The end cap on prior oil pressure buffer plunger tube top is provided with simple deflation hole, described plunger barrel glides when oleo gear is subjected to lift car or counterweight bump, fluid enters in the plunger barrel, and part fluid can spray plunger barrel by deflation hole, causes the loss of fluid.

Summary of the invention

For addressing the above problem, the utility model provide a kind of when being subjected to lift car or counterweight bump fluid can not spray the oleo gear of plunger barrel by deflation hole.

The utility model oleo gear comprises pressure cylinder, orienting sleeve, plunger barrel, screw collar, upper spring seat, end cap, deflation hole, and wherein, it is as follows that described deflation hole is positioned at the part-structure of described end cap:

Described end cap downside center has first section of columned end cap deflation hole, first section upside of end cap deflation hole is communicated with second section of columned end cap deflation hole, the diameter that described end cap deflation hole is second section is greater than first section of described end cap deflation hole, second section upside of described end cap deflation hole is communicated with the 3rd section of columned end cap deflation hole, and the diameter that described end cap deflation hole is the 3rd section is greater than second section of described end cap deflation hole and upper spring seat deflation hole; The upper end that described end cap deflation hole is the 3rd section is communicated with described upper spring seat deflation hole;

In second section of the end cap deflation hole steel ball is arranged, the diameter of described steel ball is greater than the diameter of first section of described end cap deflation hole; The seal ring of ring-type is arranged in the 3rd section of the described end cap deflation hole, and the outer rim of described seal ring contacts the sidewall of the 3rd section of described end cap deflation hole, and the circle diameter that the inner edge of described seal ring forms is less than the diameter of described steel ball;

Have at least one induction opening around first section of the described end cap deflation hole, described induction opening is communicated with for second section with described end cap deflation hole.

The utility model oleo gear, wherein: be provided with first seal ring between described plunger barrel and the orienting sleeve, be provided with second seal ring between described orienting sleeve and the pressure cylinder.

The utility model oleo gear, wherein: the felt that is provided with ring-type between described plunger barrel and the screw collar.

The utility model oleo gear, wherein: the induction opening symmetry around first section of the described end cap deflation hole be provided with two.

The utility model oleo gear is provided with the structure of downward unidirectional air inlet at end cap deflation hole place, when therefore being subjected to lift car or counterweight bump, be in closed state under the anticyclonic pressure of this end cap deflation hole in plunger barrel, fluid can not spray plunger barrel by deflation hole, can not cause the loss of fluid, reduce the handling labor that brings because of the fluid loss.

Description of drawings

Fig. 1 is the cutaway view of the utility model oleo gear;

Fig. 2 is the top enlarged drawing of Fig. 1.

The specific embodiment

Below in conjunction with Figure of description the utility model oleo gear is described further.

As shown in Figure 1, the utility model oleo gear, comprise base plate 1, the pressure cylinder 2 that inside is full of fluid is fixed on the base plate 1, on pressure cylinder 2, be fixedly connected with elbow 3, connecting panel 20 and spring perch 8, pressure cylinder 2 inner bottom part center fixation have bevelled adjust bar 25, between pressure cylinder 2 and bevelled adjust bar 25, be with the torus knot stem bar 24 of band centromere discharge orifice versatilely, flow bean choke 24 is captiveed joint with plunger barrel 18, captive joint with end cap 16 in plunger barrel 18 upper ends, also be provided with orienting sleeve 9 between upper end and the plunger barrel 18 in the described pressure cylinder 2, guiding plunger barrel 18 moves up and down, and described orienting sleeve 9 is pressed in the internal upper part of pressure cylinder 2 by screw collar 10.

Switch connecting panel 21 is provided with snap switch 22, described switch connecting panel 21 is captiveed joint with the connecting panel 20 on the pressure cylinder 2, the hole of the upper end of described elbow 3 is used for to the pressure cylinder 2 inner fluid that inject, and elbow 3 is provided with plug screw 5, be used to check oil level, with elbow 3 places 4 sealings of plug screw seal ring are arranged at described plug screw 5, described end cap 16 upper surfaces are provided with upper spring seat 12, upper spring seat 12 captive joints dash plate 13, be provided with compression spring 11 described being fixed between spring perch 8 on pressure cylinder 2 cylindricals and the upper spring seat 12, play the effect that plunger barrel 18 upward movements are resetted, switch is beaten bar 17 upper ends and is fixed on the upper spring seat 12, and be abutted against the contact 23 on the other end and the snap switch 22.In addition, deflation hole 30 runs through end cap 16, upper spring seat 12 and dash plate 13.

Said structure is identical with the structure of prior oil pressure energy disperser.

Narration the utility model oleo gear is different from the structure of existing oleo gear below:

As shown in Figure 2, it is as follows that the utility model oleo gear, deflation hole 30 are positioned at the part-structure of end cap 16:

End cap 16 downside centers have columned end cap deflation hole first section 31, first section 31 upside of end cap deflation hole is communicated with second section 32 of columned end cap deflation hole, the diameter that the end cap deflation hole is second section 32 is greater than first section 31 of end cap deflation hole, second section 32 upside of end cap deflation hole is communicated with the 3rd section 33 of columned end cap deflation hole, and the diameter that the end cap deflation hole is the 3rd section 33 is greater than second section 32 of end cap deflation hole and upper spring seat deflation hole 40; The upper end that the end cap deflation hole is the 3rd section 33 is communicated with upper spring seat deflation hole 40;

In second section 32 of the end cap deflation hole steel ball 15 is arranged, the diameter of steel ball 15 is greater than the diameter of first section 31 of end cap deflation hole; The seal ring 14 that ring-type is arranged in the 3rd section 33 of the end cap deflation hole, the sidewall that the outer rim contact end cap deflation hole of seal ring 14 is the 3rd section 33, the circle diameter that the inner edge of seal ring 14 forms is less than the diameter of steel ball 15;

Around first section 31 of the end cap deflation hole symmetry be provided with two induction openings 35, induction opening 35 is communicated with for second section 32 with the end cap deflation hole.

As shown in Figure 1, the utility model oleo gear is provided with following hermetically-sealed construction in addition, can prevent that fluid from flowing out from the seal ring place under pressure: be provided with first seal ring 6 between plunger barrel 18 and the orienting sleeve 9, be provided with second seal ring 7 between orienting sleeve 9 and the pressure cylinder 2.

As shown in Figure 1, the utility model oleo gear is provided with antisoiling felt 19 between plunger barrel 18 and the screw collar 10.

The working process of the utility model oleo gear is as follows: when the dash plate 13 at lift car or counterweight cushion at collision top, plunger barrel 18 moves downward, and the fluid in the pressure cylinder 2 overflows in the plunger barrel 18 by the cutoff port on the flow bean choke 24 of plunger barrel 18 lower ends.When plunger barrel 18 moved down, the end cap 16 that is fixed on plunger barrel 18 upper ends drove upper spring seat 12 fixed thereon and moves down, thus the switch that is fixed on upper spring seat 12 1 sides make bar 17 and also move down, snap switch 22 is opened, make the towing machine outage.After lift car or counterweight left energy disperser, compression spring 11 resetted plunger barrel 18 fully, and snap switch 22 contacts 23 are resetted, and switch on makes it be in normal operating condition.In addition, because plunger barrel 18 moves down, fluid overflows and is filled into plunger barrel 18 inner chambers, leak out micro-air after making plunger barrel 18 in-to-in air by high compression, in compression spring 11 reseting procedures, mend air by the induction opening on the end cap 16 35 when steel ball 15 falls, make plunger barrel 18 internal pressure balances.In entire work process, there is not fluid to overflow outside the energy disperser, so do not need to safeguard and additional fluid.

Above embodiment is described preferred implementation of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that the common engineering staff in this area make the technical solution of the utility model all should fall in the definite protection domain of claims of the present utility model.

Claims

1. oleo gear, comprise pressure cylinder (2), orienting sleeve (9), plunger barrel (18), screw collar (10), upper spring seat (12), end cap (16), deflation hole (30), it is characterized in that: it is as follows that described deflation hole (30) is positioned at the part-structure of described end cap (16):

Described end cap (16) downside center has first section of columned end cap deflation hole (31), first section (31) upside of end cap deflation hole is communicated with second section of columned end cap deflation hole (32), the diameter of described end cap deflation hole second section (32) is greater than first section of described end cap deflation hole (31), second section (32) upside of described end cap deflation hole is communicated with columned the 3rd section of end cap deflation hole (33), and the diameter of described end cap deflation hole the 3rd section (33) is greater than described end cap deflation hole second section (32) and upper spring seat deflation hole (40); The upper end of described end cap deflation hole the 3rd section (33) is communicated with described upper spring seat deflation hole (40);

The end cap deflation hole has steel ball (15) in second section (32), and the diameter of described steel ball (15) is greater than the diameter of described end cap deflation hole first section (31); The seal ring (14) that ring-type is arranged in the described end cap deflation hole the 3rd section (33), the outer rim of described seal ring (14) contacts the sidewall of described end cap deflation hole the 3rd section (33), and the circle diameter that the inner edge of described seal ring (14) forms is less than the diameter of described steel ball (15);

Have at least one induction opening (35) around the described end cap deflation hole first section (31), described induction opening (35) and described end cap deflation hole second section (32) are communicated with.

2. oleo gear according to claim 1 is characterized in that: be provided with first seal ring (6) between described plunger barrel (18) and the orienting sleeve (9), be provided with second seal ring (7) between described orienting sleeve (9) and the pressure cylinder (2).

3. oleo gear according to claim 2 is characterized in that: the felt (19) that is provided with ring-type between described plunger barrel (18) and the screw collar (10).

4. oleo gear according to claim 3 is characterized in that: what first section (31) induction opening (35) on every side of described end cap deflation hole was symmetrical is provided with two.