CN217708443U

CN217708443U - Elevator buffer with exhaust sealing function

Info

Publication number: CN217708443U
Application number: CN202221377651.9U
Authority: CN
Inventors: 李建忠; 郭利广; 陈宇强; 吴海棠
Original assignee: Foshan Guangyang Elevator Parts Co ltd
Current assignee: Foshan Guangyang Elevator Parts Co ltd
Priority date: 2022-06-02
Filing date: 2022-06-02
Publication date: 2022-11-01
Anticipated expiration: 2032-06-02

Abstract

The utility model discloses an elevator buffer with exhaust sealing function, including the plunger type jar and install the upper end cover at the plunger type jar top, the upper end cover link up be equipped with the hole body of the inner chamber intercommunication of plunger type jar, seal installation cock body in the hole body, the cock body is equipped with the exhaust hole, the exhaust hole is including the front hole that is located the outside and the back hole that is located the inboard, the back hole enlarges relatively to the front hole, install the movable shutoff piece that is equipped with the rear end orifice shutoff to the front hole in the back hole; when the plunger cylinder is compressed downwards, air in the plunger cylinder can be discharged through the front hole, and the air exhaust is smooth and smooth; along with the increase of the pressure, when the hydraulic oil rushes upwards through the plunger cylinder, the movable plugging piece can be jacked up to plug the rear end orifice of the front hole, so that the hydraulic oil is prevented from being ejected out during exhaust; when the plunger cylinder is reset upwards, the movable blocking piece can automatically separate from the rear end orifice of the front hole and enable external air to enter the inner cavity of the plunger cylinder through the front hole, so that the external air can smoothly enter the plunger cylinder and the internal and external air pressures of the buffer are consistent.

Description

Elevator buffer with exhaust sealing function

Technical Field

The utility model belongs to the technical field of the elevator accessory, concretely relates to elevator buffer.

Background

When the elevator buffer is compressed downwards, air in the oil cylinder and the plunger cylinder needs to be exhausted through the air holes, and when the buffer is reset upwards under the action of spring force, air needs to enter, so that the internal air pressure and the external air pressure are kept consistent. In the prior art, the exhaust and air intake system of the elevator buffer in China is generally that an exhaust hole is formed in the top end cover of the buffer, or a plurality of exhaust holes are formed in the side surface of the top end cover and directly communicated with the inner cavity of a plunger cylinder.

This kind of exhaust, admit air arrangement mode has two drawbacks: 1. when the elevator buffer works and is compressed downwards, because of large impact and short compression time, hydraulic oil can be sprayed out of the exhaust hole while air is exhausted; 2. after the hydraulic oil is added to the buffer, if the buffer is horizontally placed in the transportation and carrying processes, the hydraulic oil may leak out of the exhaust hole.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an elevator buffer that has exhaust sealing function that exhaust, air inlet are unblocked and hydraulic oil can not spray out when exhausting, and the transportation handling of keeping flat hydraulic oil also can not the seepage come out.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an elevator buffer with an exhaust sealing function comprises a plunger cylinder and an upper end cover arranged on the top of the plunger cylinder, wherein the upper end cover is provided with a hole body communicated with an inner cavity of the plunger cylinder in a penetrating manner, a plug body is arranged in the hole body in a sealing manner, the plug body is provided with an exhaust hole, the exhaust hole comprises a front hole positioned on the outer side and a rear hole positioned on the inner side, the rear hole is enlarged relative to the front hole, and a movable blocking piece for blocking a rear end hole opening of the front hole is arranged in the rear hole; when the plunger cylinder is compressed downwards, air in the plunger cylinder can be discharged through the front hole, and the air exhaust is smooth and smooth; along with the increase of the pressure, when the hydraulic oil rushes upwards through the plunger cylinder, the movable plugging piece can be jacked up to plug the rear end orifice of the front hole, so that the hydraulic oil is prevented from being ejected out during exhaust; when the plunger cylinder is reset upwards, the movable plugging piece can automatically separate from the rear end orifice of the front hole and enable external air to enter the inner cavity of the plunger cylinder through the front hole, so that the external air can smoothly enter the plunger cylinder and the internal and external air pressures of the buffer are consistent.

As an improvement scheme, a front end plugging piece is detachably mounted at a front end orifice of the front hole, and when the elevator buffer is horizontally transported and carried, the front end plugging piece is fixedly mounted at the front hole to plug the front end orifice of the front hole, so that hydraulic oil is prevented from leaking out in the process of horizontally transporting and carrying the elevator buffer; when the elevator buffer is installed and used, the front end plugging piece is detached from the front hole, so that the smooth exhaust and air intake of the elevator buffer can be ensured when the elevator buffer is installed and used.

The utility model discloses following beneficial effect has:

the utility model discloses elevator buffer with sealed function of exhaust has the exhaust, admits air unblocked and when exhausting hydraulic oil can not spray out, and keeps flat the characteristics that hydraulic oil can not the seepage come out yet in the transportation handling.

Drawings

Fig. 1 is an overall structure diagram of an elevator buffer with an exhaust sealing function according to the present invention;

fig. 2 is a schematic view of a first embodiment of an elevator buffer having an exhaust sealing function according to the present invention;

FIG. 3 is an enlarged view of a portion A of FIG. 2;

FIG. 4 is a cross-sectional view of the plug screw of the embodiment of FIG. 2;

FIG. 5 is a top view of the plug screw of the embodiment of FIG. 2;

fig. 6 is a schematic view of a second embodiment of the buffer of the present invention;

FIG. 7 is a cross-sectional view of the plug screw of the embodiment of FIG. 6;

fig. 8 is a top view of the plug screw in the embodiment of fig. 6.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments, so as to more clearly understand the technical idea claimed in the present invention.

As shown in fig. 1-5 the utility model discloses elevator buffer's first embodiment with sealed function of exhaust, including hydro-cylinder 1, plunger cylinder 2, spring 3, switch is played pole 4, rubber pad 5, spring gland 6 and upper end cover 7, plunger cylinder 2 installs in hydro-cylinder 1, upper end cover 7 threaded connection and sealed top of being fixed in plunger cylinder 2, spring gland 6 passes through countersunk screw fixed mounting in upper end cover 7, rubber pad 5 bonds on spring gland 6, switch is played pole 4 installation and is fixed in spring gland 6, still be provided with spring support plate on the hydro-cylinder 1, spring 3 suit is in plunger cylinder 2 and fixed a position between spring support plate and spring gland 6, this kind of assembly structure belongs to the conventional mode of elevator buffer in this field, do not expand the statement here to its specific assembly structure's functional characteristics.

In this embodiment, a hole 17 communicating with the inner cavity of the plunger cylinder 2 is provided through the center of the upper end cap 7, but the hole 17 may not be provided at the center of the upper end cap 7 in other embodiments. The hole body 17 is internally provided with a plug body 10 in a sealing way, in the embodiment, the hole body 17 through which the upper end cover 7 is arranged is a screw hole, the plug body 10 is a screw plug which is connected with the hole body 17 in a threaded way, and is connected with the hole body 17 in a sealing way through a second sealing ring 11 when fixedly connected with the hole body 17 in the threaded way; in order to facilitate screwing the screw plug to the hole body 17, a screwing groove 19 is further formed in the front end face of the screw plug. In other embodiments, the plug body 10 may be fixed to the hole 17 in a sealing manner, such as a snap-fit connection, as long as the plug body 10 is securely fixed to the hole 17 in a sealing manner.

The plug body 10 is provided with an exhaust hole 18, the exhaust hole 18 specifically comprises a front hole 181 positioned on the outer side and a rear hole 182 positioned on the inner side, the rear hole 182 is enlarged relative to the front hole 181, a movable plugging piece for plugging a rear end hole of the front hole 181 is installed in the rear hole 182, the movable plugging piece comprises a pin piece 13 and a first sealing ring 12 installed and fixed on a step of the pin piece 13, a supporting piece 14 for supporting and supporting the pin piece 13 is arranged at the tail end of the rear hole 182, the supporting piece 14 is provided with a through hole 15 for communicating the rear hole 182 with an inner cavity of the plunger cylinder 2, the pin piece 13 is plugged at the rear end of the front hole 181 through the first sealing ring 12 when being jacked up, and the first sealing ring 12 is specifically an O-shaped sealing ring. When the plunger cylinder 2 is compressed downwards, the air in the plunger cylinder 2 can be discharged through the front hole 181, and the air discharge is smooth and smooth; when the hydraulic oil rushes upwards through the plunger cylinder 2 along with the increase of the pressure, the movable plugging pieces, namely the pin piece 13 and the supporting piece 14, can be jacked up and plugged at the rear end orifice of the front hole 181, so that the hydraulic oil is prevented from being sprayed out during the exhaust; when the plunger cylinder 2 is reset upwards, the movable blocking parts, namely the pin part 13 and the supporting part 14 automatically separate from the rear end orifice of the front hole 181 under the action of self gravity, and outside air enters the inner cavity of the plunger cylinder 2 through the front hole 181, so that the outside air smoothly enters the plunger cylinder 2, and the air pressure inside and outside the buffer is consistent. In the present embodiment, the supporting member 14 is installed and fixed by the following structure: the inner wall of the tail end of the rear hole 182 is provided with a clamping groove 16, and the supporting piece 14 is a hole circlip which is clamped and fixed on the clamping groove 16, and belongs to a mechanical part which can be directly purchased in the market, and the specific structure of the hole circlip is not expanded.

A second embodiment of the present invention, as shown in fig. 6-8, differs from the first embodiment shown in fig. 1-5 in that: the movable plugging piece adopts the steel ball 110 with the diameter larger than the front hole 181 and smaller than the rear hole 182, and the steel ball 110 replaces the pin piece 13 and the first sealing ring 12 in the first embodiment shown in fig. 1-5, so that the aim of preventing hydraulic oil from being sprayed during exhaust and the effect of smooth exhaust and air intake can be achieved. In this embodiment, a hexagonal nut 111 may be fixedly welded to the front end face of the plug screw instead of the screwing groove 19, so that the plug screw can be easily screwed to be screwed into the hole 17 in a sealing manner.

As shown in fig. 3 and 6, a front end plugging piece can be further detachably mounted at the front end orifice of the front hole 181, so that after hydraulic oil is added to the buffer, and the elevator buffer is horizontally transported and carried, the front end plugging piece is fixedly mounted in the front hole 181 and can plug the front end orifice of the front hole 181; when the elevator buffer is installed and used, the front end plugging piece can be detached from the front hole 181, so that the exhaust hole 18 can exhaust air and intake air smoothly.

In the two embodiments described above, the front end plugging member specifically includes the sealing screw 8 and the sealing washer 9, the front hole 181 is provided as a screw hole, and the sealing washer 9 is sleeved on the sealing screw 8 and is used to seal the front hole 181 when the sealing screw 8 is screwed into the front hole 181; of course, in other embodiments, the sealing connection of the front end block piece to the front hole 181 does not have to be a screw-hole fit, and may be a snap-seal fit, for example, which is not described herein.

Various other modifications and changes may occur to those skilled in the art based on the teachings and concepts herein disclosed, and all such modifications and changes are intended to be included within the scope of the present invention.

Claims

1. An elevator buffer with an exhaust sealing function comprises a plunger cylinder and an upper end cover arranged at the top of the plunger cylinder, wherein the upper end cover is provided with a hole body communicated with an inner cavity of the plunger cylinder in a penetrating manner;

when the plunger cylinder is compressed downwards, air in the plunger cylinder can be discharged through the front hole; along with the increase of pressure, when hydraulic oil rushes upwards through the plunger cylinder, the movable plugging piece can be jacked up to plug a rear end orifice of the front hole; when the plunger cylinder is reset upwards, the movable plugging piece can automatically separate from the rear end orifice of the front hole and allow external air to enter the inner cavity of the plunger cylinder through the front hole.

2. The buffer of claim 1, wherein the movable block comprises a pin and a first sealing ring fixed on a step of the pin, a supporting member supporting and holding the pin is provided at the end of the rear hole, the supporting member has a through hole communicating the rear hole and the inner cavity of the plunger cylinder, and the pin is blocked at the rear end of the front hole by the first sealing ring when being jacked up.

3. The elevator buffer with the exhaust sealing function as claimed in claim 1, wherein the movable blocking piece is a steel ball with a diameter larger than the front hole and smaller than the rear hole, a supporting piece for supporting the steel ball is arranged at the tail end of the rear hole, and the supporting piece is provided with a through hole for communicating the rear hole and the inner cavity of the plunger cylinder.

4. The buffer of claim 2 or 3, wherein the inner wall of the rear end of the rear hole is provided with a locking groove, and the support member is a circlip for hole which is locked and fixed to the locking groove.

5. The elevator buffer with the exhaust sealing function according to any one of claims 1 to 3, wherein a front end block piece is detachably mounted on the front end opening of the front hole, and is fixedly mounted on the front hole to block the front end opening of the front hole when the elevator buffer is transported and carried in a flat state; when the elevator buffer is installed and used, the front end plugging piece is detached from the front hole.

6. The exhaust-sealing elevator buffer of claim 5 wherein said front opening is a threaded opening and said front end block comprises a sealing screw and a sealing washer, said sealing washer being received over said sealing screw and adapted to seal said front opening when said sealing screw is threaded into said front opening.

7. The buffer of any claim 1-3, wherein the hole through which the top cover is inserted is a threaded hole, and the plug body is a plug screw connected to the hole and is sealed by a second sealing ring when the plug is fixedly connected to the hole.

8. The buffer of an elevator having an exhaust sealing function according to claim 7, wherein a front end surface of the screw plug is provided with a screwing groove for facilitating screwing of the screw plug at the time of mounting.

9. The buffer of an elevator with an exhaust sealing function as claimed in claim 7, wherein the front end face of the screw plug is fixedly welded with a hexagonal nut for facilitating screwing of the screw plug when mounted.