CN220869444U - Suspension type single hydraulic prop - Google Patents

Abstract

The application discloses a suspension type single hydraulic prop, and relates to the field of coal mine machinery; the suspended single hydraulic prop comprises an oil cylinder, two ends of the oil cylinder are respectively welded with a welding handle body and a welding base, a movable column is assembled in the oil cylinder, a sealing cover is installed at one end of the movable column, the sealing cover is connected with a top cover, the oil cylinder, the welding handle body, the welding base, the movable column and the sealing cover form a sealing cavity, and a reset tension spring for connecting the welding base and the sealing cover is arranged in the sealing cavity. The handle body and the base of the suspension type single hydraulic prop are fixed at two ends of the oil cylinder in a welding mode, so that the assembly is convenient, the sealing surface is reduced, the disassembly and maintenance parts are reduced, and the labor intensity of workers is reduced.

Description

Suspension type single hydraulic prop

Technical Field

The application relates to the field of coal mine machinery, in particular to a suspension type single hydraulic prop.

Background

In the existing suspension single hydraulic prop, a base and a handle body are respectively sleeved on the outer sides of two end heads of an oil cylinder, and are respectively connected with two ends of the oil cylinder through steel wires.

In the underground acid etching environment of the coal mine, the sealing surface of the suspension single hydraulic prop is easy to rust, so that phenomena such as prop leakage, slow seepage and the like occur, and the product quality is influenced; in the assembly process, the requirements on the size and the quality of the sealing surface parts of the end sealing surface of the oil cylinder, the handle body, the base, the movable column and the like are high, and the assembly difficulty is high; when the hydraulic cylinder is disassembled and maintained, the maintenance parts comprise, but are not limited to, a matching surface of a cylinder opening and a handle body, a matching surface of the handle body and an outer circle of a movable cylinder, a matching surface of the cylinder opening and a base, and the like, and the parts are strut sealing parts and key parts, so that the assembly and maintenance difficulties are high.

Disclosure of utility model

The application aims to provide a suspension type single hydraulic prop, wherein a handle body and a base are fixed at two ends of an oil cylinder in a welding mode, so that the assembly is convenient, and sealing surfaces are reduced, thereby reducing disassembly and maintenance parts and reducing the labor intensity of workers.

In order to achieve the above purpose, the application provides a suspension type single hydraulic prop, which comprises an oil cylinder, wherein two ends of the oil cylinder are respectively welded with a welding handle body and a welding base, a movable column is assembled in the oil cylinder, one end of the movable column is provided with a sealing cover, the sealing cover is connected with a top cover, the oil cylinder, the welding handle body, the welding base, the movable column and the sealing cover form a sealing cavity, and a reset tension spring for connecting the welding base and the sealing cover is arranged in the sealing cavity.

In some embodiments, the welded handle body comprises an outer sleeve and a guide sleeve, wherein a first portion of the outer sleeve is welded with the oil cylinder, an outer portion of the guide sleeve is sleeved inside a second portion of the outer sleeve, and an inner portion of the guide sleeve is sleeved with the movable column.

In some embodiments, a stop is provided between the first and second portions of the jacket for limiting the end of the cylinder.

In some embodiments, the guide sleeve is provided with a guard for covering and protecting the jacket.

In some embodiments, the inner portion of the guide sleeve is sealingly connected to the movable post and the outer portion of the guide sleeve is sealingly connected to the outer sleeve.

In some embodiments, the outer sleeve is connected to the guide sleeve by a connecting wire.

In some embodiments, the welding base comprises a base body and a spring core barrel, the base body is welded with the oil cylinder, the spring core barrel is connected with the base body and is positioned in the sealing cavity, and at least part of the reset tension spring is positioned in the spring core barrel.

In some embodiments, the sealing cover and the spring core barrel are both provided with spring hooks, and the reset tension spring is connected with the sealing cover and the spring hooks at the welding base.

In some embodiments, the spring cartridge is provided with a pair of flow-through apertures.

In some embodiments, the first portion of the housing is embedded within the interior of the cylinder and the second portion of the housing is located outside of the cylinder and flush with the surface of the cylinder.

Compared with the background art, the suspension type single hydraulic prop provided by the application comprises an oil cylinder, a welding handle body, a welding base, a movable column, a sealing cover, a top cover and a reset tension spring. The welding handle body and the welding base are respectively welded at two ends of the oil cylinder, the movable column is assembled in the oil cylinder, the sealing cover is mounted at one end of the movable column, the top cover is connected with the sealing cover, the oil cylinder, the welding handle body, the welding base, the movable column and the sealing cover form a sealing cavity, the reset tension spring is positioned in the sealing cavity, and the welding base is connected with the sealing cover through the reset tension spring.

Compared with the existing single hydraulic prop, the suspension type single hydraulic prop has the advantages that the handle body and the base are fixed at two ends of the oil cylinder in a welding mode, so that the assembly is convenient, the sealing surface is reduced, the disassembly and maintenance positions are reduced, and the labor intensity of workers is reduced.

Drawings

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

Fig. 1 is a schematic structural view of a suspension type single hydraulic prop according to an embodiment of the present application;

fig. 2 is a schematic structural view of a guide sleeve according to an embodiment of the present application;

FIG. 3 is a schematic structural view of an outer jacket according to an embodiment of the present application;

Fig. 4 is a schematic structural diagram of a welding base according to an embodiment of the present application;

Fig. 5 is a schematic structural diagram of a spring core barrel in a welding base according to an embodiment of the present application.

Wherein:

1-top cover, 2-sealing cover, 3-welding handle body, 31-guiding sleeve, 32-outer sleeve, 4-oil cylinder, 5-movable column, 6-welding base, 61-base, 62-spring core barrel, 63-spring hook and 7-reset tension spring.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The present application will be further described in detail below with reference to the drawings and detailed description for the purpose of enabling those skilled in the art to better understand the aspects of the present application.

The suspension single hydraulic prop in the prior art generally comprises an oil cylinder, a movable column, a base, a handle body, a top cover, a sealing cover, a reset spring and the like, wherein the base and the handle body are respectively sleeved on the outer sides of the end heads at two ends of the oil cylinder, are respectively connected with the two ends of the oil cylinder through steel wires, and form a sealing cavity by assembling sealing elements such as O-shaped rings, check rings, D-shaped rings and the like; the movable column is slidably arranged in the oil cylinder, the sealing cover is arranged at the top of the movable column, one end of the reset spring is connected with the base, and the other end of the reset spring is connected with the sealing cover.

The suspended single hydraulic prop is extremely easy to rust in the supporting process due to the acid etching environment of the underground coal mine, so that phenomena of prop leakage, slow seepage and the like are caused, and the product quality is influenced; in the assembly process, the requirements on the size and the quality of sealing surfaces such as an oil cylinder end sealing surface, a handle body, a base, a movable column body and the like are high, the assembly difficulty is high, and meanwhile, when the assembly and the maintenance are disassembled, the maintenance parts comprise but are not limited to the matching surface of an oil cylinder opening and the handle body, the matching surface of the handle body and the movable column outer circle, the matching surface of the oil cylinder opening and the base and the plugging position of the movable column, and the parts are strut sealing parts and key parts, so that the assembly and the maintenance difficulty are high, and therefore, the improvement on the structural form of the existing suspension type single hydraulic strut is needed.

Referring to fig. 1 to 5, fig. 1 is a schematic structural diagram of a suspension type single hydraulic prop provided in an embodiment of the present application, fig. 2 is a schematic structural diagram of a guide sleeve provided in an embodiment of the present application, fig. 3 is a schematic structural diagram of an outer sleeve provided in an embodiment of the present application, fig. 4 is a schematic structural diagram of a welding base provided in an embodiment of the present application, and fig. 5 is a schematic structural diagram of a spring core barrel in a welding base provided in an embodiment of the present application.

As shown in fig. 1, the main top cover 1, the sealing cover 2, the welding handle body 3, the oil cylinder 4, the movable column 5, the welding base 6 and the reset tension spring 7 of the suspension type single hydraulic prop.

The welding handle body 3 and the welding base 6 are respectively welded at two ends of the oil cylinder 4, the movable column 5 is assembled in the oil cylinder 4, the sealing cover 2 is arranged at one end of the movable column 5, the top cover 1 is connected with the sealing cover 2, the oil cylinder 4, the welding handle body 3, the welding base 6, the movable column 5 and the sealing cover 2 form a sealing cavity, the reset tension spring 7 is positioned in the sealing cavity, and the welding base 6 is connected with the sealing cover 2 through the reset tension spring 7.

It should be noted that, the improved content of this embodiment lies in the connection mode of welding handle body 3 and welding base 6 and hydro-cylinder 4, and this suspension type single hydraulic prop compares with current suspension single hydraulic prop, and handle body and base are all fixed at hydro-cylinder 4 both ends with the welded mode, not only convenient assembly, has reduced sealed face moreover to the disassembly maintenance position has been reduced, workman's intensity of labour has been alleviateed.

In this embodiment, except for the above-mentioned connection manner between the welding handle body 3 and the welding base 6 and the oil cylinder 4, which is a modification of this embodiment, the working principle of the suspension type single hydraulic prop and other non-mentioned structures, sealing members, etc. of this embodiment should be the same as those of the existing suspension type single hydraulic prop, and therefore will not be described herein again.

In a specific embodiment, the suspension type single hydraulic prop comprises a top cover 1, a sealing cover 2, a welding handle body 3, an oil cylinder 4, a movable column 5, a welding base 6 and a reset tension spring 7, and the welding handle body 3 is divided into two parts of an outer sleeve 32 and a guide sleeve 31.

The first part of the outer sleeve 32 is welded with the oil cylinder 4, the outer part of the guide sleeve 31 is sleeved inside the second part of the outer sleeve 32, and the movable column 5 is sleeved inside the guide sleeve 31.

Referring to fig. 1 in conjunction with fig. 2 and 3, the lower portion of the outer sleeve 32 is a first portion, the upper portion of the outer sleeve 32 is a second portion, at this time, the lower portion of the outer sleeve 32 is sleeved on the oil cylinder 4 and welded to the oil cylinder 4, the upper portion of the outer sleeve 32 is sleeved on the guide sleeve 31, the main portion of the movable column 5 is sleeved in the oil cylinder 4, and the movable column 5 is also partially sleeved in the guide sleeve 31 of the welded handle body 3.

Further, a baffle is provided between the first portion and the second portion of the outer sleeve 32, and the baffle is used for limiting the end of the oil cylinder 4.

Referring to fig. 3 in combination with fig. 1, the baffle is located at the middle part of the outer sleeve 32, and when the lower part of the outer sleeve 32 is sleeved on the oil cylinder 4, the baffle located at the middle part of the outer sleeve 32 is limited at the end part of the oil cylinder 4, which is equivalent to the baffle of the outer sleeve 32 to provide a positioning effect for the installation of the outer sleeve 32 on the oil cylinder 4, and further provide a positioning effect for the installation of the welding handle body 3 on the oil cylinder 4.

Further, the guide sleeve 31 is provided with a guard for covering the outer jacket 32 and providing protection to the outer jacket 32.

Referring to fig. 2 in combination with fig. 1, the guard is located at the upper portion of the guide sleeve 31, the lower portion of the guide sleeve 31 is sleeved in the outer sleeve 32, and after the guide sleeve 31 is assembled with the outer sleeve 32, the guard of the guide sleeve 31 is located at the upper side of the outer sleeve 32, which is equivalent to the guard of the guide sleeve 31 providing protection to the outer sleeve 32 in the upper side direction.

Further, the inside of the guide sleeve 31 is in sealing connection with the movable column 5, and the outside of the guide sleeve 31 is in sealing connection with the outer sleeve 32.

The outer jacket 32 is connected with the guide sleeve 31 by connecting steel wires.

For the oil cylinder 4, an inner hole corresponding to the welding base 6 is turned at the lower end of the oil cylinder 4, and the outer circle is chamfered, and the oil cylinder is welded with the welding base 6 through two-step welding; the upper end of the oil cylinder 4 is lathed to form an outer circle with the size equivalent to the inner hole of the outer sleeve 32 of the welding handle body 3, and is chamfered, and the outer sleeve 32 of the welding handle body 3 is welded through two-step welding to form a whole.

For the uide bushing 31 of welding handle body 3, uide bushing 31 hole is according to movable column 5 size and slot cooperation size, processes out uide ring, D type circle, dust ring size, hole assembly uide ring, D type circle, dust ring, the guard pad of thickening is widened in the upper edge design of uide bushing 31, the size is greater than overcoat 32 external diameter for protect overcoat 32 outward flange after the assembly, uide bushing 31 excircle turning wire groove and O type circle groove, excircle assembly retaining ring, O type circle seals through O type circle and retaining ring after the assembly with overcoat 32, prevent slow infiltration.

For the outer sleeve 32 of the welding handle body 3, turning is carried out on the inner hole size of the outer sleeve 32 according to the size of the cylinder opening of the oil cylinder 4 and the size of the guide sleeve 31, a corresponding baffle is turned on the inner hole of the outer sleeve 32 for limiting the oil cylinder 4, simultaneously, a steel wire groove is turned, a steel wire notch is milled on the outer circle, the outer circle is connected with the guide sleeve 31 through a connecting steel wire, and a chamfer is formed on the outer circle of the outer sleeve 32 to be welded with the upper end of the oil cylinder 4.

In a specific embodiment, the suspension type single hydraulic prop comprises a top cover 1, a sealing cover 2, a welding handle body 3, an oil cylinder 4, a movable column 5, a welding base 6 and a reset tension spring 7, and the welding base 6 is divided into a base body 61 and a spring core barrel 62.

The base 61 is welded with the cylinder 4, the spring core barrel 62 is connected with the base 61 and is positioned in the sealing cavity, and at least part of the return tension spring 7 is positioned in the spring core barrel 62.

Referring to fig. 4 in combination with fig. 1, the base 61 is welded and fixed at the lower end of the cylinder 4, the spring core 62 is fixed at the upper side of the base 61, and the spring core 62 is used for limiting the position of the return tension spring 7 in the sealed cavity and maintaining the state of the return tension spring 7 stable.

Further, a spring hook 63 is arranged in the sealing cover 2 and the spring core barrel 62, and the reset tension spring 7 is connected with the sealing cover 2 and the spring hook 63 at the welding base 6.

Referring to fig. 5 in combination with fig. 1, the upper end of the return tension spring 7 is connected with a spring hook on the sealing cover 2, the lower end of the return tension spring 7 is connected with a spring hook 63 in the spring core barrel 62, and the spring hook is connected with the return tension spring 7 by the spring core barrel 62 and the spring hook 63, so that the phenomenon that the return tension spring 7 is closed by hanging the spring hook due to the fact that the stress of the return tension spring 7 rebounds to the welding base 6 is avoided when the sealing cover 2 and the return tension spring 7 are disassembled.

Further, the spring core barrel 62 is provided with a pair of overflow holes which are communicated with the sealing cavity and are used for flowing the liquid adhesion dirt in the oil cylinder 4.

The first portion of the seat 61 is embedded inside the cylinder 4, and the second portion of the seat 61 is located outside the cylinder 4 and flush with the surface of the cylinder 4.

Referring to fig. 4 in combination with fig. 1, the inner ring portion of the base 61 is a first portion, the outer ring portion of the base 61 is a second portion, at this time, the inner ring portion of the base 61 is embedded into the lower end of the cylinder 4, and the outer surface of the outer ring portion of the base 61 is flush with the outer surface of the lower end of the cylinder 4.

Illustratively, for the base 61 of the welded base 6, the portion of the base 61 embedded in the cylinder 4 corresponds to the inner hole of the cylinder 4, and the chamfer is machined, and the outer diameter of the portion of the base 61 protruding out of the cylinder 4 corresponds to the outer diameter of the cylinder 4.

For the spring core barrel 62 of the welding base 6, the spring core barrel 62 is welded at the center position of one side of the welding base 6, the spring core barrel 62 is formed by processing DN40 welded steel pipes, the whole length is 120mm, opposite drilling holes are formed in the spring core barrel for welding the spring hooks 63, and two large holes are formed in the spring core barrel for flowing of liquid adhesion dirt in the oil cylinder 4.

Compared with the strut mentioned in the background art, the suspension type single hydraulic strut has the advantages that on the premise of ensuring the working stroke and the supporting strength, the welding handle body 3 and the welding base 6 are connected with the oil cylinder 4 in a welding way, cylinder openings at two ends of the oil cylinder 4 are protected, sealing surfaces are reduced, and the number of the original 3 sealing surfaces is reduced to 1; in addition, the support post assembled by the method is more convenient to assemble and maintain, reduces the sealing surface, reduces the damage probability and can prolong the service life; the method can also be applied to the post maintenance mentioned in the background art, reduces the investment of new fittings and can effectively repair old and waste.

During processing, the processing of the two ends of the oil cylinder 4 does not have precision requirements; the DN40 welded pipe is oppositely drilled at a proper position, a spring hook 63 is welded to form a spring core barrel 62, the spring core barrel 62 is welded at the center of a welding base 6 to form the welding base 6, the welding base 6 is integrally welded by two-protection welding, and an embedded ring is welded to a port at one side of the oil cylinder 4; the inner hole of the guide sleeve 31 is turned to form a guide ring, a D-shaped ring and a dustproof ring, and a guard platform larger than the outer circle of the outer sleeve 32 is reserved on the upper edge of the guide ring, so that the port of the welded outer sleeve 32 is protected. The steel wire groove of the outer circle is turned, the sealing size matched with the outer sleeve 32 is achieved, the size matched with the oil cylinder 4 is turned on the lower edge of the outer sleeve 32, corresponding blocking platforms are turned, the oil cylinder 4 is prevented from entering the outer sleeve 32 excessively, the size matched with the guide sleeve 31 is turned on the upper edge of the outer sleeve 32, and the matching precision is guaranteed. The outer sleeve 32 is sleeved on the cylinder opening of the cylinder 4, and is welded by adopting two-welding-protection ring welding. During assembly, the movable column 5 is arranged in the oil cylinder 4 welded at two ends, the guide sleeve 31 is assembled, the connecting steel wire is used for fixing, the reset tension spring 7 is arranged, the hook heads at two ends are hung on the spring hook 63, one end of the hook head is hung on the sealing cover 2, the top cover 1 is assembled, the elastic cylindrical pin is used for fixing the top cover 1 on the sealing cover 2, and the whole assembly of the support is completed. When the single hydraulic prop mentioned in the technology is maintained, the elastic cylindrical pin is taken down, the top cover 1 is disassembled, the special tool is used for taking out the sealing cover 2, the reset tension spring 7 is disassembled, the connecting steel wire fixed by the guide sleeve 31 and the outer sleeve 32 is taken down, the maintenance part is only the part of the guide sleeve 31, the sealing cover 2 is placed at the plugging port of the movable post 5 and the outer surface of the movable post 5, the two ends of the cylinder port of the oil cylinder 4 mentioned in the background technology, the sealing surface of the base 6 and the sealing surface of the handle body 3 are not required to be maintained, the maintenance part is reduced, and the maintenance cost and the labor intensity of workers are reduced.

It should be noted that many components mentioned in the present application are common standard components or components known to those skilled in the art, and the structures and principles thereof are known to those skilled in the art through technical manuals or through routine experimental methods.

It should be noted that in this specification relational terms such as first and second are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

The suspended single hydraulic prop provided by the application is described in detail above. The principles and embodiments of the present application have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present application and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the application can be made without departing from the principles of the application and these modifications and adaptations are intended to be within the scope of the application as defined in the following claims.

Claims (10)

1. The utility model provides a suspension type single hydraulic prop, its characterized in that includes the hydro-cylinder, the welding handle body and the welding base have been welded respectively at the both ends of hydro-cylinder, the inside of hydro-cylinder is equipped with movable post, sealed lid is installed to the one end of movable post, sealed lid is connected with the top cap, the hydro-cylinder the welding handle body the welding base the movable post with sealed lid forms sealed cavity, be provided with in the sealed cavity and connect the welding base with sealed lid's extension spring that resets.

2. The suspended single hydraulic prop of claim 1, wherein the welding handle body comprises an outer sleeve and a guide sleeve, a first portion of the outer sleeve is welded with the cylinder, an outer portion of the guide sleeve is sleeved inside a second portion of the outer sleeve, and an inner portion of the guide sleeve is sleeved with the movable post.

3. The suspended single hydraulic prop of claim 2, wherein a stop is provided between the first and second portions of the jacket for limiting the end of the cylinder.

4. The suspended mono-hydraulic prop of claim 2, wherein the guide sleeve is provided with a guard for covering and providing protection to the jacket.

5. The suspended single hydraulic prop of claim 2, wherein an interior of the guide sleeve is sealingly connected to the movable post and an exterior of the guide sleeve is sealingly connected to the outer sleeve.

6. The suspended single hydraulic prop of claim 2, wherein the outer jacket is connected to the guide sleeve by a connecting wire.

7. The suspended single hydraulic prop of claim 1, wherein the welding base comprises a base and a spring core, the base is welded to the cylinder, the spring core is connected to the base and located in the sealed cavity, and at least a portion of the return tension spring is located in the spring core.

8. The suspended single hydraulic prop according to claim 7, wherein the sealing cover and the spring core barrel are provided with spring hooks, and the return tension spring is connected with the sealing cover and the spring hooks at the welding base.

9. The suspended cell hydraulic prop of claim 7, wherein the spring core is provided with a pair of flow-through holes.

10. The suspended single hydraulic prop of claim 7, wherein the first portion of the housing is embedded within the interior of the ram and the second portion of the housing is located outside of the ram and flush with the surface of the ram.