CN213205706U

CN213205706U - Suspension single hydraulic prop

Info

Publication number: CN213205706U
Application number: CN202020939695.0U
Authority: CN
Inventors: 周长申; 马晖; 姚君立; 高帅帅; 顾士贞
Original assignee: YANKUANG GROUP TANGCUN INDUSTRIAL CO LTD; Yankuang Donghua Heavy Industry Co ltd
Current assignee: YANKUANG GROUP TANGCUN INDUSTRIAL CO LTD; Yankuang Donghua Heavy Industry Co ltd
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2021-05-14
Anticipated expiration: 2030-05-27

Abstract

The utility model discloses a suspension hydraulic prop, locate the post of living in the hydro-cylinder and be used for the sealed stifled on the top of sealed post of living including hydro-cylinder, slidable cover, the bottom of hydro-cylinder is equipped with the base, and the inner wall that the post of living is close to sealed stifled one end is equipped with first string spring hook, and the base is equipped with second string spring hook, is connected with reset spring between first string spring hook and the second string spring hook. The suspension single hydraulic prop changes the connection positions of two ends of a return spring, changes the return spring with two ends respectively connected with a base and a sealing plug in the prior art into one end connected with a first hanging spring hook and the other end connected with a second hanging spring hook. Because the first hanging spring hook is arranged on the inner wall of the plunger and is fixedly connected with the plunger, the reset spring does not produce certain spring tension on the sealing plug any more in the process of disassembling the sealing plug, so that the disassembling of the sealing plug becomes simple and convenient, the difficulty of disassembling the sealing plug by workers is reduced, the labor intensity of the workers is reduced, and time and labor are saved.

Description

Suspension single hydraulic prop

Technical Field

The utility model relates to a coal mine machinery technical field, more specifically say, relate to a suspension hydraulic prop.

Background

The suspended single hydraulic prop in the prior art generally comprises an oil cylinder, a plunger, a base, a handle body, a top cover, a sealing plug, a return spring and the like, wherein the base and the handle body are respectively sleeved outside the end heads at two ends of the oil cylinder and are respectively connected with two ends of the oil cylinder through steel wires to form a sealing cavity; the plunger is slidably arranged in the oil cylinder, the sealing plug is arranged at the top of the plunger, one end of the reset spring is connected with the base, and the other end of the reset spring is connected with the sealing plug.

When the suspended single hydraulic prop with the structure is disassembled and maintained, the connecting steel wires of the handle body and the base are firstly disassembled, the top cover is disassembled, and then the sealing plug is disassembled by adopting a special tool.

However, in the process of disassembling the sealing plug, because the sealing plug is connected with the return spring, a certain spring tension exists, so that the disassembling difficulty of the sealing plug is very high, two persons are required to cooperate to complete the disassembling, the labor intensity is high, and time and labor are wasted; when the cooperation of two people is not the default, lead to reset spring to kick-back to base department easily, cause reset spring to hang the spring hook and close the scheduling problem.

Therefore, how to provide a suspended single hydraulic prop with a sealing plug convenient to disassemble is a problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a suspension hydraulic prop, its sealed stifled convenient dismantlement has reduced the dismantlement maintenance degree of difficulty, has reduced workman's intensity of labour, labour saving and time saving.

In order to achieve the above object, the present invention provides the following technical solutions:

the utility model provides a suspension hydraulic prop, includes that hydro-cylinder, slidable cover are located the post of living in the hydro-cylinder with be used for sealing the sealed stifled on the top of post of living, the bottom of hydro-cylinder is equipped with the base, the post of living is close to the inner wall of sealed stifled one end is equipped with first hanging spring hook, the base is equipped with second hanging spring hook, first hanging spring hook with be connected with reset spring between the second hanging spring hook.

Preferably, both ends of the first hanging spring hook are respectively welded and fixed with the inner wall of the plunger.

Preferably, the first hook spring includes:

the first transverse supporting arm is fixedly connected with the inner wall of the plunger;

and the first arc-shaped hook part is connected with the first transverse supporting arm and protrudes towards the base.

Preferably, the base and the oil cylinder are welded and fixed.

Preferably, the base and the oil cylinder are welded into a whole through a two-welding-protection welding process.

Preferably, the base includes an insert portion for mating with an inner bore of the cylinder.

Preferably, the base further comprises a flange for fitting with an end face of the oil cylinder.

Preferably, the outer diameter of the flange is greater than or equal to the outer diameter of the oil cylinder.

Preferably, the second hanging spring hook is welded and fixed with the base.

Preferably, the second hook spring comprises:

a second arc-shaped hook part protruding towards the first hook spring;

the inclined supporting arm is fixedly connected with the base;

a second transverse support arm connected between the second arcuate hook portion and the angled support arm.

The utility model provides a suspension hydraulic prop has changed the hookup location at reset spring both ends, with the reset spring that both ends were connected with base and sealed stifled respectively among the prior art, change into one end and first string spring hook joint, the other end and second string spring hook joint, first string spring hook and second string spring hook are located post and base alive respectively, also promptly, the utility model provides a reset spring connects between post and base alive.

Because the inner wall of the plunger is arranged on the first hanging spring hook and is fixedly connected with the plunger, compared with the prior art, in the process of disassembling the sealing plug, the reset spring does not produce certain spring tension on the sealing plug any more, so that the disassembly of the sealing plug becomes simple and convenient, the difficulty of disassembling the sealing plug by workers is reduced, the labor intensity of the workers is reduced, and time and labor are saved.

Simultaneously, compare in prior art, still avoided still because the workman cooperates the not tacit that leads to of understanding to kick-back to base department when dismantling sealed stifled reset spring, caused the phenomenon that reset spring hanging spring hook is closed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a cross-sectional view of a suspended single hydraulic prop according to an embodiment of the present invention.

The reference numerals in fig. 1 are as follows:

1 is an oil cylinder, 2 is a plunger, 3 is a sealing plug, 4 is a base, 5 is a first hanging spring hook, 6 is a second hanging spring hook, and 7 is a return spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The core of the utility model is to provide a suspension hydraulic prop, its sealed stifled convenient dismantlement has reduced the dismantlement maintenance degree of difficulty, has reduced workman's intensity of labour, labour saving and time saving.

Please refer to fig. 1, which is a cross-sectional view of a suspended single hydraulic prop according to an embodiment of the present invention.

The utility model provides a suspension hydraulic prop mainly includes hydro-cylinder 1, post 2, sealed stifled 3, base 4, first string spring hook 5, second string spring hook 6 and reset spring 7 etc..

Specifically, in hydro-cylinder 1 was located to the cover that the plunger 2 is slidable, sealed stifled 3 was used for the top of sealed plunger 2, and the bottom of hydro-cylinder 1 is located to base 4 to the bottom of sealed hydro-cylinder 1.

It should be noted that the main structures of the oil cylinder 1, the plunger 2, the seal plug 3, the base 4, the return spring 7 and other parts of the suspension single hydraulic prop are the same as the structures of the corresponding parts of the conventional suspension single hydraulic prop in the prior art.

The utility model discloses a main improvement point lies in, sets up first hanging spring hook 5 near sealed stifled 3's one end inner wall at post 2 alive, makes its and the 6 combined action of second hanging spring hook of locating base 4, connects reset spring 7.

It should be noted that, the utility model discloses do not limit to the specific height position of the relative post 2 of first string spring hook 5, the technical staff in this field can set for according to actual need, as long as can cooperate reset spring 7's practical application can.

That is to say, the utility model provides a suspension hydraulic prop has changed the hookup location at 7 both ends of reset spring, with reset spring 7 that both ends are connected with base 4 and sealed stifled 3 respectively among the prior art, change one end into and be connected with first string spring hook 5, the other end is connected with second string spring hook 6, and movable column 2 and base 4 are located respectively to first string spring hook 5 and second string spring hook 6, also, the utility model provides a reset spring 7 connects between movable column 2 and base 4.

Because first hanging spring hook 5 locates the inner wall of plunger 2, with plunger 2 fixed connection, consequently, compare in prior art, at the in-process of disassembling sealed stifled 3, reset spring 7 no longer produces certain spring tension to sealed stifled 3, consequently for disassembling of sealed stifled 3 becomes simple and convenient, has reduced the degree of difficulty that the workman disassembled sealed stifled 3, thereby has reduced workman's intensity of labour, labour saving and time saving.

Meanwhile, compared with the prior art, the phenomenon that the spring hook of the reset spring 7 is closed due to the fact that the reset spring 7 rebounds to the base 4 caused by the fact that workers are not matched with each other when the sealing plug 3 is detached is avoided.

In consideration of the specific connection mode of the first hanging spring hook 5 and the inner wall of the plunger 2, on the basis of the above embodiment, two ends of the first hanging spring hook 5 are respectively welded and fixed with the inner wall of the plunger 2.

That is, the first hanging spring hook 5 is connected with the inner wall of the plunger 2 in a welding mode, so that the connection between the first hanging spring hook and the plunger is more stable.

In view of the simplicity and the easy implementation of the specific structure of the first hook spring 5, on the basis of the above embodiment, the first hook spring 5 includes a first transverse support arm and a first arc-shaped hook portion, the first transverse support arm is respectively disposed at two ends of the first arc-shaped hook portion, the first transverse support arm is used for being fixedly connected with the inner wall of the plunger 2, and the first arc-shaped hook portion protrudes toward the base 4 relative to the first transverse support arm, so as to facilitate the hooking of the return spring 7.

Further, because the base 4 of the conventional single hydraulic prop is fixedly connected with the oil cylinder 1 through a steel wire in the prior art, and the connecting steel wire penetrates into a steel wire groove from an opening on the excircle of the base 4, when the conventional single hydraulic prop is used under the coal mine under the condition of unbalance loading or has other uncertain factors, high-pressure liquid in the oil cylinder 1 is easy to seep or leak from the base 4. In addition, when the base 4 is disassembled, the connecting steel wire is easy to break due to uneven stress, once the steel wire breaks in the steel wire groove, the base 4 needs to be damaged to disassemble the steel wire, so that the recycling rate of the base 4 is low, the base 4 is difficult to disassemble, and in order to solve the technical problems, the base 4 and the oil cylinder 1 are welded and fixed on the basis of the embodiment.

That is, in this embodiment, the base 4 and the oil cylinder 1 are integrated by welding, the sealing performance of welding is good, and the phenomenon that the high-pressure liquid in the oil cylinder 1 seeps or leaks from the base 4 due to uncertain factors of the use environment or unbalanced load can be avoided.

Meanwhile, when the suspended single hydraulic prop is disassembled, the base 4 does not need to be disassembled again, namely, the disassembly and maintenance mode of the suspended single hydraulic prop is changed, the disassembly difficulty is reduced, and the maintenance cost is reduced.

Preferably, on the basis of the above embodiment, the base 4 and the oil cylinder 1 are welded into a whole by adopting a two-dimensional welding process.

In view of the simplicity of the specific structure of the base 4, on the basis of the above-described embodiment, the base 4 includes an insertion portion for engaging with the inner hole of the cylinder 1.

That is, before the base 4 is welded to the cylinder 1, the insertion portion of the base 4 is first inserted into the inner hole of the cylinder 1, so that the machined surface of the outer periphery of the insertion portion of the base 4 is fitted with the inner hole of the cylinder 1.

Further, on the basis of the above embodiment, the base 4 further includes a flange for fitting with the end surface of the oil cylinder 1.

That is, after the embedded portion of the base 4 is inserted in place, the side surface of the flange of the base 4 facing the oil cylinder 1 is in contact with the end surface of the oil cylinder 1 in an attaching manner, so that the sealing performance of the base 4 and the oil cylinder 1 is improved.

Preferably, the base 4 is welded with the end face of the oil cylinder 1 through a flange.

As shown in fig. 1, preferably, on the basis of the above embodiment, the outer diameter dimension of the flange is larger than or equal to the outer diameter dimension of the oil cylinder 1.

In consideration of the specific connection manner of the second hook 6 and the base 4, on the basis of the above-described embodiment, the second hook 6 is fixed to the base 4 by welding.

It can be understood that, after the base 4 is welded and fixed with the oil cylinder 1, the base 4 does not need to be disassembled again when the suspended single hydraulic prop is disassembled, and therefore, the second hanging spring hook 6 can be directly fixed on the base 4 in a welding mode, and the firmness of connection between the second hanging spring hook 6 and the base 4 is improved.

In consideration of the specific structure of the second hook 6, on the basis of the above-described embodiment, the second hook 6 includes a second arc-shaped hook portion, a tilt support arm and a second transverse support arm, the second arc-shaped hook portion protrudes toward the first hook 5, the tilt support arm is used for being fixedly connected with the base 4, the tilt support arm is disposed in a tilted manner so as to increase the contact height between the second arc-shaped hook portion and the return spring 7, and the second arc-shaped hook portion and the tilt support arm are connected by the second transverse support arm.

It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

It is right above that the utility model provides a suspension hydraulic prop has carried out the detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. A suspended single hydraulic prop comprises an oil cylinder (1), a plunger (2) slidably sleeved in the oil cylinder (1) and a sealing plug (3) used for sealing the top end of the plunger (2), and is characterized in that a base (4) is arranged at the bottom end of the oil cylinder (1), a first hanging spring hook (5) is arranged on the inner wall of one end, close to the sealing plug (3), of the plunger (2), a second hanging spring hook (6) is arranged on the base (4), and a reset spring (7) is connected between the first hanging spring hook (5) and the second hanging spring hook (6);

base (4) including be used for with the hole complex embedding portion of hydro-cylinder (1) and be used for with the flange of the terminal surface laminating of hydro-cylinder (1), the external diameter size of flange is more than or equal to the external diameter size of hydro-cylinder (1), base (4) pass through the flange with hydro-cylinder (1) terminal surface welding together.

2. The hydraulic prop of claim 1, characterized in that the two ends of the first suspension spring hook (5) are respectively welded and fixed with the inner wall of the plunger (2).

3. The suspended monoblock hydraulic prop according to claim 1, characterized in that said first suspension spring hook (5) comprises:

the first transverse supporting arm is fixedly connected with the inner wall of the plunger (2);

and the first arc-shaped hook part is connected with the first transverse supporting arm and protrudes towards the base (4).

4. The suspended single hydraulic prop according to any one of claims 1 to 3, characterized in that the base (4) and the cylinder (1) are welded together by a two-dimensional welding process.

5. The suspended single hydraulic prop according to any one of claims 1 to 3, characterized in that the second suspension spring hook (6) is welded and fixed to the base (4).

6. A suspended mono-hydraulic prop according to any one of claims 1-3, characterized in that the second suspension spring hook (6) comprises:

a second arc-shaped hook part protruding towards the first hook spring (5);

the inclined supporting arm is fixedly connected with the base (4);