CN215928225U - Buffer device for rock burst prevention single hydraulic prop support - Google Patents
Buffer device for rock burst prevention single hydraulic prop support Download PDFInfo
- Publication number
- CN215928225U CN215928225U CN202121942235.4U CN202121942235U CN215928225U CN 215928225 U CN215928225 U CN 215928225U CN 202121942235 U CN202121942235 U CN 202121942235U CN 215928225 U CN215928225 U CN 215928225U
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- barrel
- hydraulic prop
- plate
- fixedly connected
- single hydraulic
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Abstract
The utility model discloses a buffer device for protecting a single hydraulic prop against rock burst, which comprises a barrel, a polyurethane spring and the single hydraulic prop, wherein the barrel is a seamless steel pipe, a bearing plate is fixedly connected below the barrel, an overflow port is arranged on the side surface of the barrel, a lower base plate is fixedly connected between the barrel and the bearing plate, the polyurethane spring is movably connected in the barrel, an upper base plate is embedded in the barrel, and a fixing ring is fixedly connected to the top of the barrel.
Description
Technical Field
The utility model relates to the technical field of mine supporting equipment, in particular to a buffering device for protecting a rock burst prevention single hydraulic prop.
Background
The working face of the great-rise mine of the iron coal group is threatened by rock burst to seriously deform a top plate, a single hydraulic prop support is adopted at present, although certain safety reliability is realized, a certain defect is still exposed under the condition of large impact load, the DW38-250/110 single hydraulic prop is taken as an example, the rated flow of a safety valve in a three-way valve is 30L/Min, the working pressure is 36.8Mpa, when the impact load occurs, the hydraulic resistance of the three-way valve is large, the rapid internal complete unloading cannot be realized, the internal pressure of a single body is rapidly increased and exceeds the bearing limit, so that the single body is expanded or cracked by an external cylinder, a piston rod is bent, the support fails, and serious hidden danger is brought to safe production.
SUMMERY OF THE UTILITY MODEL
In view of the above technical shortcomings, the present invention provides a buffer device for protecting a hydraulic prop against rock burst, so as to solve the problems in the background art.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a buffer device for protecting a single hydraulic prop against rock burst, which comprises a barrel, a polyurethane spring and the single hydraulic prop, wherein the barrel is a seamless steel pipe, a bearing plate is fixedly connected below the barrel, the bearing plate is of a rectangular plate structure, mounting holes are formed in the bottoms of the barrel and the bearing plate, an overflow port is formed in the side surface of the barrel and is positioned above the bottom of the barrel, a lower cushion plate is fixedly connected between the barrel and the bearing plate and embedded in the barrel, the barrel is movably connected with the polyurethane spring, the polyurethane spring is positioned above the lower cushion plate, an upper cushion plate is embedded in the barrel, the bottom surface of the upper cushion plate is in contact with the upper surface of the polyurethane spring, the upper surface of the upper cushion plate is in contact with the bottom surface of the single hydraulic prop, the upper surface of the upper cushion plate is processed into a curved surface, and with hydraulic prop's bottom curved surface looks adaptation, the top fixed connection of barrel solid fixed ring, solid fixed ring's below embedding barrel in, solid fixed ring's lower surface and hydraulic prop's upper surface contact.
Preferably, the number of the polyurethane springs is two, the two polyurethane springs are sequentially arranged in the cylinder body from top to bottom, and the outer portions of the polyurethane springs are in a groove shape.
Preferably, solid fixed ring be the semicircle form, solid fixed ring's quantity be two, solid fixed ring include two lower two parts, solid fixed ring's upper portion diameter be greater than the diameter of lower part, solid fixed ring's upper portion and the top fixed connection of barrel, solid fixed ring's lower part go deep into in the barrel, the bottom surface of solid fixed ring's lower part and the last surface contact of monomer hydraulic prop.
Preferably, the top end of the fixing ring is provided with a chain, and two ends of the chain are respectively and fixedly connected to the upper surfaces of the two fixing rings.
Preferably, the middle part of the outer side surface of the cylinder body is fixedly connected with a handle.
Preferably, the lower part of the outer side surface of the cylinder body is fixedly connected with a plurality of fixing plates, the fixing plates are triangular plate-shaped, and the lower ends of the fixing plates are fixedly connected with the bearing plates.
The utility model has the beneficial effects that:
1. according to the utility model, the cylinder body is arranged at the bottom of the single hydraulic prop, and the polyurethane spring, the upper base plate and the lower base plate are arranged in the cylinder body, so that the single hydraulic prop has higher pressure resistance and impact resistance, the effect of reducing the weight of the single hydraulic prop is realized on the basis of ensuring the working resistance of the single hydraulic prop, and the internal pressure of the single hydraulic prop is ensured to be within a safe range.
2. According to the utility model, the two polyurethane springs are arranged in the cylinder body, so that the supporting height is effectively increased, the pressure can be effectively relieved in time, and the sinking of the single hydraulic prop during pressure bearing is slowed down.
3. The utility model has the advantages of small mass, simple and firm structure, convenient disassembly and assembly, great reduction of labor intensity of workers, long service life and contribution to popularization and use.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of an overall structure provided in an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the overall structure provided by an embodiment of the present invention;
fig. 3 is a schematic view of a fixed ring structure according to an embodiment of the present invention.
Description of reference numerals:
the hydraulic support comprises a barrel body 1, a polyurethane spring 2, a single hydraulic support 3, a pressure bearing plate 4, a lower backing plate 5, an overflow port 6, an upper backing plate 7, a fixing ring 8, a mounting hole 9, a chain 10, a handle 11 and a fixing plate 12.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example (b):
as shown in fig. 1-3, the utility model provides a buffer device for protecting a single hydraulic prop against rock burst, which comprises a cylinder body 1, a polyurethane spring 2 and a single hydraulic prop 3, wherein the cylinder body 1 is a seamless steel pipe, a bearing plate 4 is fixedly connected below the cylinder body 1, and the cylinder body 1 and the bearing plate 4 are assembled and welded into a whole to increase the bearing area and slow down sinking of the single hydraulic prop during bearing;
the pressure bearing plate 4 is of a rectangular plate-shaped structure, and mounting holes 9 are formed in the bottoms of the cylinder body 1 and the pressure bearing plate 4, so that the pressure bearing plate can be conveniently mounted and dismounted with other components;
the side surface of the cylinder body 1 is provided with an overflow port 6, the overflow port 6 is positioned above the bottom of the cylinder body 1, so that the phenomenon that water cannot be discharged after entering the cylinder body 1 and parts in the cylinder body are soaked for a long time to cause corrosion or other forms of failure is prevented;
the lower backing plate 5 is fixedly connected between the cylinder body 1 and the bearing plate 4, and the lower backing plate 5 is embedded in the cylinder body 1 and used for isolating the mounting hole 9 of the cylinder body 1 and preventing the polyurethane spring 2 from being damaged by coal and rock blocks entering from the mounting hole 9 under the action of pressure;
the inner part of the cylinder body 1 is movably connected with a polyurethane spring 2, and the polyurethane spring 2 is positioned above the lower backing plate 5;
the cylinder body 1 is internally embedded with an upper padding plate 7, the bottom surface of the upper padding plate 7 is in contact with the upper surface of the polyurethane spring 2, the upper surface of the upper padding plate 7 is in contact with the bottom surface of the single hydraulic prop 3, the upper surface of the upper padding plate 7 is processed into a curved surface and is matched with the curved surface at the bottom of the single hydraulic prop 3, so that when the single hydraulic prop 3 bears pressure, the bottom of the single hydraulic prop 3 is in surface contact with the upper padding plate 7, and the curved surface at the bottom of the single hydraulic prop 3 can increase the contact surface, reduce the pressure intensity and avoid the damage and failure of a base of the hydraulic single hydraulic prop due to overlarge local pressure;
the solid fixed ring 8 of top fixed connection of barrel 1, solid fixed ring 8's below imbed in the barrel 1, solid fixed ring 8's lower surface and hydraulic prop 3's upper surface contact.
Further, the quantity of polyurethane spring 2 be two, two polyurethane spring 2 top-down install in barrel 1 in proper order, polyurethane spring 2's outside be the slot form, through the test of multiple material and structure, polyurethane elastomer performance is between plastics and rubber, polyurethane spring 2's wear-resisting degree is high, ageing-resistant, resilience and mechanical properties are better.
Further, solid fixed ring 8 be the semicircle form, solid fixed ring 8's quantity be two, solid fixed ring 8 include two parts down, solid fixed ring 8's upper portion diameter be greater than the diameter of lower part, solid fixed ring 8's upper portion and the top fixed connection of barrel 1, solid fixed ring 8's lower part go deep into in the barrel 1, the bottom surface of solid fixed ring 8's lower part and the last surface contact of hydraulic prop 3, gu fixed ring 8 is used for guaranteeing that hydraulic prop 3 and barrel 1 keep hang down straightness, ensures that the rock burst that comes from the roof conducts in the vertical direction of hydraulic prop, avoids producing transverse force, destroys hydraulic prop 3 and barrel 1, avoids hydraulic prop 3 flies out and hinders the people.
Further, the top end of the fixing ring 8 is provided with a chain 10, two ends of the chain 10 are respectively and fixedly connected to the upper surfaces of the fixing ring 8, and the chain 10 is used for ensuring that the fixing ring 8 is not lost in the transportation and installation processes.
Further, the middle part of the outer side surface of the barrel body 1 is fixedly connected with a lifting handle 11 so as to facilitate the transportation and installation of workers.
Further, the lower part of the outer side surface of the cylinder body 1 is fixedly connected with a plurality of fixing plates 12, the fixing plates 12 are triangular plate-shaped, the lower ends of the fixing plates 12 are fixedly connected with the bearing plate 4, the fixing plates 12 further stabilize the connection between the cylinder body 1 and the bearing plate 4, and simultaneously further slow down the sinking of the single hydraulic prop during bearing.
The working principle is as follows:
the buffer device for preventing the single hydraulic prop from being impacted to support is arranged at the bottom of the single hydraulic prop 3, when the impact pressure and the top plate are suddenly pressed, the single hydraulic prop 3 is decompressed through the safety valve, and meanwhile, the polyurethane spring 2 in the cylinder body 1 of the device can also be timely and effectively decompressed, so that the internal pressure of the single hydraulic prop 3 is ensured to be in a safe range.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. A buffer device for protecting a single hydraulic prop against rock burst is characterized by comprising a barrel, a polyurethane spring and the single hydraulic prop, wherein the barrel is a seamless steel pipe, a bearing plate is fixedly connected to the lower portion of the barrel and is of a rectangular plate-shaped structure, mounting holes are formed in the bottoms of the barrel and the bearing plate, an overflow port is formed in the side face of the barrel and is located above the bottom of the barrel, a lower cushion plate is fixedly connected between the barrel and the bearing plate and embedded in the barrel, the barrel is internally and movably connected with the polyurethane spring, the polyurethane spring is located above the lower cushion plate, an upper cushion plate is embedded in the barrel, the bottom surface of the upper cushion plate is in contact with the upper surface of the polyurethane spring, and the upper surface of the upper cushion plate is in contact with the bottom surface of the single hydraulic prop, the upper surface processing of upper padding plate be the curved surface to with the bottom curved surface looks adaptation of hydraulic prop, the solid fixed ring of top fixed connection of barrel, solid fixed ring's below embedding barrel in, solid fixed ring's lower surface and hydraulic prop's upper surface contact.
2. The buffer device for preventing rock burst of a single hydraulic prop support according to claim 1, wherein the number of the polyurethane springs is two, the two polyurethane springs are sequentially installed in the cylinder body from top to bottom, and the outer portions of the polyurethane springs are in a groove shape.
3. A buffering mechanism for protecting a hydraulic prop against impact pressure, as claimed in claim 1, wherein the number of said fixing rings is two, said fixing rings include two lower portions, the diameter of the upper portion of said fixing ring is larger than that of the lower portion, the upper portion of said fixing ring is fixedly connected to the top end of the cylinder, the lower portion of said fixing ring extends into the cylinder, and the bottom surface of the lower portion of said fixing ring is in contact with the upper surface of the hydraulic prop.
4. A damping device for an anti-rock-burst hydraulic prop support according to claim 1, wherein a chain is installed at the top end of each of said fixing rings, and both ends of said chain are fixedly connected to the upper surfaces of said two fixing rings, respectively.
5. A damping device for protecting a hydraulic prop against rock burst as claimed in claim 1, wherein a handle is fixedly attached to the middle of the outer surface of said cylinder.
6. A buffer device for an anti-rock-burst hydraulic prop support according to claim 1, wherein the lower portion of the outer side surface of the cylinder is fixedly connected with a plurality of fixing plates, the fixing plates are triangular plate-shaped, and the lower ends of the fixing plates are fixedly connected with the bearing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121942235.4U CN215928225U (en) | 2021-08-18 | 2021-08-18 | Buffer device for rock burst prevention single hydraulic prop support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121942235.4U CN215928225U (en) | 2021-08-18 | 2021-08-18 | Buffer device for rock burst prevention single hydraulic prop support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215928225U true CN215928225U (en) | 2022-03-01 |
Family
ID=80423419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121942235.4U Expired - Fee Related CN215928225U (en) | 2021-08-18 | 2021-08-18 | Buffer device for rock burst prevention single hydraulic prop support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215928225U (en) |
-
2021
- 2021-08-18 CN CN202121942235.4U patent/CN215928225U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220301 |
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| CF01 | Termination of patent right due to non-payment of annual fee |