CN113175338A - Stack type support with impact-resistant hydraulic prop and working method thereof - Google Patents
Stack type support with impact-resistant hydraulic prop and working method thereof Download PDFInfo
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- CN113175338A CN113175338A CN202110648077.XA CN202110648077A CN113175338A CN 113175338 A CN113175338 A CN 113175338A CN 202110648077 A CN202110648077 A CN 202110648077A CN 113175338 A CN113175338 A CN 113175338A
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- 238000000034 method Methods 0.000 title claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 25
- 239000010959 steel Substances 0.000 claims description 25
- 239000003245 coal Substances 0.000 claims description 10
- 238000010521 absorption reaction Methods 0.000 claims description 9
- 230000035939 shock Effects 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 4
- 239000006096 absorbing agent Substances 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims 1
- 230000007547 defect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
- E21D15/54—Details of the ends of props
- E21D15/55—Details of the ends of props of prop heads or feet
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Vibration Dampers (AREA)
Abstract
The invention provides a stack type support with an impact-resistant hydraulic prop and a working method thereof. The invention has reasonable design and simple structure, the main body of the impact-resistant hydraulic prop can effectively realize constant-resistance yielding, the possible impact problem of the top plate during engineering application is solved, the upper top plate is in planar contact with a supporting object, and the stability of the chopping type support when bearing top pressure and impact pressure is greatly enhanced.
Description
Technical Field
The invention relates to a stack type support with an impact-resistant hydraulic prop and a working method thereof.
Background
The occurrence conditions of coal resources in China are complex and changeable, the single hydraulic prop is limited by geological conditions due to low investment, and the problem of roof support after coal seam mining always troubles the whole coal industry. The support is widely used in coal mine roof supports due to the characteristics of less support construction, flexible operation, convenient use and the like under a plurality of coal mines, the support is developed from an initial metal friction support to a current single hydraulic support, and the support performance is greatly improved.
However, the existing single hydraulic prop has the defects of insufficient yielding capacity and the like, and the metal friction prop is easy to damage and lose efficacy in the underground due to the defects of insufficient supporting strength, incapability of maintaining constant resistance and the like.
Disclosure of Invention
The invention improves the problems, namely the invention aims to provide a stack type support with an impact-resistant hydraulic prop and a working method thereof, which can enhance the pressure yielding capacity and strength, keep constant resistance and are not easy to damage and lose efficacy.
The concrete implementation scheme of the invention is that the energy-absorbing hydraulic support comprises an upper top plate, a plurality of upright columns and a lower top plate which are sequentially arranged from top to bottom, wherein each upright column comprises an impact-resistant hydraulic support main body, and an energy-absorbing device is arranged between each impact-resistant hydraulic support main body and the corresponding lower top plate.
Further, the energy-absorbing device includes the steel sleeve, inside base, piston body, interior sleeve pipe and the outer tube of having from top to bottom in proper order of steel sleeve, interior sheathed tube external diameter is greater than the internal diameter of outer tube, impacted style hydraulic prop main part below sets up in the base top.
Furthermore, the outer tube includes reducing section A and constant diameter section, reducing section A's external diameter is unchangeable, and reducing section A's internal diameter from top to bottom shrinks gradually, constant diameter section external diameter and internal diameter are unchangeable.
Further, the outer sleeve comprises a large-diameter section, a variable-diameter section B and a small-diameter section, the inner diameter and the outer diameter of the large-diameter section and the inner diameter and the outer diameter of the small-diameter section are kept unchanged, the maximum outer diameter of the variable-diameter section B is the same as the outer diameter of the large-diameter section, and the minimum outer diameter of the variable-diameter section B is the same as the outer diameter of the small-diameter section.
Furthermore, the outer side of the inner sleeve is provided with a necking section, so that the inner sleeve can be pressed into the outer sleeve conveniently, and the clamping is prevented.
Furthermore, the anti-impact hydraulic prop main body comprises a butterfly nut, a top cover, a movable column body and an oil cylinder which are sequentially arranged from top to bottom, wherein a three-way valve is arranged on the upper side part of the oil cylinder, a handle body is arranged on the side part of the three-way valve, and a spring is further arranged at the bottom in the piston body.
Furthermore, a flat-bottom column socket and an ear seat connected with the upper end of the stand column are welded in the upper top plate, and a flat-bottom column socket and an ear seat connected with the lower end of the stand column are also welded in the lower top plate.
Further, the working method of the stack type support with the impact-resistant hydraulic prop comprises the following steps: (1) after all parts of the chopped type support are conveyed into a roadway to be supported, a lower top plate is connected with an upright post, and then the upper end of the upright post and an upper top plate are fixed through a pin shaft; (2) lifting the upright column to enable the upper top plate and the lower top plate to stabilize the top plate and the bottom plate of the support pillar roadway; (3) when a supporting object (a coal mine roof) impacts downwards, pressure is transmitted into a base of the energy absorption device below the upright post from the upper roof, the pressure is transmitted to the inner sleeve through the piston body, and the inner sleeve deforms; (4) because the lower end of the outer sleeve is fixed at the inner bottom of the steel sleeve, the inner diameter of the outer sleeve is increased under the high-pressure extrusion, the inner sleeve is gradually extruded into the outer sleeve, the deformation can be continuously carried out, extremely high resistance is kept, the aim of impact resistance is fulfilled, and the impact energy is effectively absorbed.
Compared with the prior art, the invention has the following beneficial effects: this device reasonable in design, simple structure, the formula hydraulic prop main part that shocks resistance can effectively realize the constant resistance and let the pressure, and the roof that probably strikes problem when solving the engineering and using goes up the roof and is plane contact with strutting the object, strengthens greatly chopping the stability of formula support when bearing top pressure and impact pressure.
Drawings
FIG. 1 is a schematic diagram of an energy absorber according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a second energy absorber according to an embodiment of the present invention;
FIG. 3 is an overall front view of an embodiment of the present invention;
FIG. 4 is an overall left side view of an embodiment of the invention
FIG. 5 is an overall view of an embodiment of the present invention;
in the figure: 1-butterfly nut, 2-top cover, 3-movable column, 4-spring, 5-base, 6-three-way valve, 7-handle, 8-oil cylinder, 9-piston, 10-inner sleeve, 11-outer sleeve, 12-steel sleeve, 13-upper top plate, 14-upright post, 15-lower top plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example (b): referring to fig. 1-5, a stack support with an impact-resistant hydraulic prop is provided, which comprises an upper top plate 13, four upright posts 14 and a lower top plate 15, wherein the upper ends and the lower ends of the four upright posts are respectively and uniformly arranged at four corners of the upper top plate and the lower top plate; the energy absorption device can be arranged at the bottom of the main body of the shock-resistant hydraulic prop to serve as a base, and can also be arranged at the top of the main body of the shock-resistant hydraulic prop to serve as a top cap.
In the first embodiment of the invention, as shown in fig. 1, the energy absorption device comprises a steel sleeve 12, a base 5, a piston body 9, an inner sleeve 10 and an outer sleeve 11 are sequentially arranged in the steel sleeve from top to bottom, the outer diameter of the inner sleeve is larger than the inner diameter of the outer sleeve, and the lower part of the main body of the impact hydraulic prop is sleeved above the base;
the outer sleeve is a section of high-strength hollow steel pipe and is fixed at the center of a station at the bottom of the steel sleeve; the outer tube includes reducing section A and constant diameter section, reducing section A's external diameter is unchangeable, and reducing section A's internal diameter from top to bottom shrinks gradually, constant diameter section external diameter and internal diameter are unchangeable.
The steel sleeve is a steel cylindrical sleeve structure with a bottom at one end and an opening at the other end; the piston body is a round steel plate, and the diameter of the piston body is matched with the inner diameter of the steel sleeve; the inner sleeve is a section of hollow steel pipe, the outer diameter of the inner sleeve is larger than the inner diameter of the outer sleeve, and the inner sleeve is fixedly connected with the center of the piston body.
When the hydraulic prop works, the impact-resistant hydraulic prop main body is sleeved on the base, and after the hydraulic prop main body is placed stably, the movable prop body is lifted to start working; when the coal mine roof impacts downwards, pressure is generated on the energy absorption device and is transmitted to the inner sleeve through the piston body. Because the outer sleeve is fixed, the inner sleeve generates shrinkage deformation on the tapered section of the outer sleeve under the high-pressure extrusion, and is gradually extruded into the outer sleeve. This deformation can be continued while maintaining a very high resistance, thus achieving the aim of resisting impacts.
In the second embodiment of the invention, as shown in fig. 2, the energy absorption device comprises a steel sleeve 12, the steel sleeve is internally provided with a base 5, a piston body 9, an inner sleeve 10 and an outer sleeve 11 from top to bottom in sequence, the outer diameter of the inner sleeve is larger than the inner diameter of the outer sleeve, and the lower part of the main body of the impact type hydraulic prop is sleeved above the base;
the outer sleeve comprises a large-diameter section, a variable-diameter section B and a small-diameter section, the inner diameter and the outer diameter of the large-diameter section and the small-diameter section are kept unchanged, the maximum outer diameter of the variable-diameter section B is the same as the outer diameter of the large-diameter section, and the minimum outer diameter of the variable-diameter section B is the same as the outer diameter of the small-diameter section; the outer diameter of the large-diameter section is matched with the inner diameter of the steel sleeve, and the small-diameter section is fixedly connected with the center of the bottom surface of the steel sleeve.
The steel sleeve is a steel cylindrical sleeve structure with a bottom at one end and an opening at the other end; the piston body is a round steel plate, and the diameter of the piston body is matched with the inner diameter of the steel sleeve; the inner sleeve is a section of solid round steel, the outer diameter of the inner sleeve is larger than the inner diameter of the small-diameter section of the outer sleeve, and the inner sleeve is fixedly connected with the center of the piston body.
When the second embodiment of the invention works, the impact-resistant hydraulic prop main body is sleeved on the base, and the movable prop body is lifted after the second embodiment is placed stably to start working; when the coal mine roof impacts downwards, pressure is generated on the energy absorption device and is transmitted to the inner sleeve through the piston body. Because the small diameter section of the outer sleeve is fixed, the inner diameter of the small diameter section of the outer sleeve is expanded under the pressure of the inner sleeve under the high-pressure extrusion, and the inner sleeve is gradually extruded into the outer sleeve. This deformation can be continued while maintaining a very high resistance, thus achieving the aim of resisting impacts.
In an embodiment, a necking section is arranged on the outer side of the inner sleeve, and after the necking section is contacted with the diameter-variable section of the outer sleeve, the starting plastic deformation of the inner sleeve is facilitated, and the clamping is prevented.
In this embodiment, the length of the inner sleeve is matched with that of the outer sleeve, so that plastic deformation can be fully performed, and the compression length is sufficient.
In this embodiment, the main body of the impact-resistant hydraulic prop is a suspension type single hydraulic prop, and is applied to coal mines.
The anti-impact hydraulic prop main body comprises a butterfly nut 1, a top cover 2, a movable prop body 3 and an oil cylinder 8 which are sequentially arranged from top to bottom, wherein a three-way valve 6 is arranged at the upper side part of the oil cylinder, a handle body 7 is arranged at the side part of the three-way valve, and a spring 4 is further arranged at the bottom in the piston body.
In this embodiment, weld flat bottom post nest and the ear seat of being connected with the stand upper end in the upper plate, also weld flat bottom post nest and the ear seat of being connected with the stand lower extreme in the roof down.
The upper top plate and the lower top plate are both in a cuboid box shape, and the upper top plate is in direct contact with a supporting object.
In the embodiment, when the anti-impact stacking type support works, after all parts of the anti-impact stacking type support are conveyed into a roadway needing to be supported, the lower top plate is well connected with the upright post; placing the upright column into the column nest of the upper top plate from bottom to top, and locking the pin shaft structure; the four upright posts are lifted simultaneously, the supports stably support a top plate and a bottom plate of the roadway, and a plurality of supports are adjacently placed and supported along the direction of the roadway, so that a firm roadway space is formed;
when the supporting object impacts downwards, the pressure is transmitted to the energy absorption device below the upright post through the upper top plate, the inner sleeve in the energy absorption device contracts and deforms, and the impact energy is effectively absorbed.
Any embodiment disclosed herein above is meant to disclose, unless otherwise indicated, all numerical ranges disclosed as being preferred, and any person skilled in the art would understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Since the numerical values are too numerous to be exhaustive, some of the numerical values are disclosed in the present invention to illustrate the technical solutions of the present invention, and the above-mentioned numerical values should not be construed as limiting the scope of the present invention.
If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the terms "first" and "second" are used merely to distinguish one element from another in a descriptive sense and are not intended to have a special meaning unless otherwise stated.
Meanwhile, if the invention as described above discloses or relates to parts or structural members fixedly connected to each other, the fixedly connected parts can be understood as follows, unless otherwise stated: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated.
Any part provided by the invention can be assembled by a plurality of independent components or can be manufactured by an integral forming process.
Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (8)
1. The utility model provides a take formula of shocking resistance hydraulic prop's buttress support which characterized in that, is including last roof, a plurality of stand and the roof down that sets gradually from top to bottom, the stand includes formula of shocking resistance hydraulic prop main part, be provided with the energy-absorbing device between impact formula hydraulic prop main part and the roof down.
2. The stacking rack with the impact-resistant hydraulic prop according to claim 1, wherein the energy absorber comprises a steel sleeve, the steel sleeve is internally provided with a base, a piston body, an inner sleeve and an outer sleeve from top to bottom in sequence, the outer diameter of the inner sleeve is larger than the inner diameter of the outer sleeve, and the impact-resistant hydraulic prop is arranged above the base below the main body of the impact-resistant hydraulic prop.
3. A stacked stent with impact resistant hydraulic struts according to claim 2, wherein the outer sleeve comprises a reducing section a having a constant outer diameter and a constant inner diameter, wherein the inner diameter of the reducing section a gradually decreases from top to bottom, and the outer diameter and the inner diameter of the constant inner diameter section are constant.
4. A buttress mount with impact-resistant hydraulic prop according to claim 2, in which the outer sleeve comprises a large diameter section, a reduced diameter section B and a small diameter section, the inner and outer diameters of the large and small diameter sections being constant, the maximum outer diameter of the reduced diameter section B being the same as the outer diameter of the large diameter section and the minimum outer diameter of the reduced diameter section B being the same as the outer diameter of the small diameter section.
5. A stack support with impact resistant hydraulic prop according to claim 1, characterized in that the outer side of the inner sleeve is provided with a tapered section to facilitate pressing of the inner sleeve inside the outer sleeve to prevent jamming.
6. The stacking support with the shock-resistant hydraulic prop according to claim 1, wherein the shock-resistant hydraulic prop body comprises a butterfly nut, a top cover, a plunger body and an oil cylinder which are sequentially arranged from top to bottom, a three-way valve is arranged on the upper side of the oil cylinder, a handle body is arranged on the side of the three-way valve, and a spring is further arranged at the bottom in the piston body.
7. A stack stand according to claim 1, wherein a flat-bottomed socket and an ear mount connected to the upper end of the upright are welded into the upper top plate, and a flat-bottomed socket and an ear mount connected to the lower end of the upright are also welded into the lower top plate.
8. A method of operating a pallet support with impact resistant hydraulic props as claimed in claim 2, characterised by the steps of: (1) after all parts of the chopped type support are conveyed into a roadway to be supported, a lower top plate is connected with an upright post, and then the upper end of the upright post and an upper top plate are fixed through a pin shaft; (2) lifting the upright column to enable the upper top plate and the lower top plate to stabilize the top plate and the bottom plate of the support pillar roadway; (3) when a supporting object (a coal mine roof) impacts downwards, pressure is transmitted into a base of the energy absorption device below the upright post from the upper roof, the pressure is transmitted to the inner sleeve through the piston body, and the inner sleeve deforms; (4) because the lower end of the outer sleeve is fixed at the inner bottom of the steel sleeve, the inner diameter of the outer sleeve is increased under the high-pressure extrusion, the inner sleeve is gradually extruded into the outer sleeve, the deformation can be continuously carried out, extremely high resistance is kept, the aim of impact resistance is fulfilled, and the impact energy is effectively absorbed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110648077.XA CN113175338A (en) | 2021-06-10 | 2021-06-10 | Stack type support with impact-resistant hydraulic prop and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110648077.XA CN113175338A (en) | 2021-06-10 | 2021-06-10 | Stack type support with impact-resistant hydraulic prop and working method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN113175338A true CN113175338A (en) | 2021-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110648077.XA Pending CN113175338A (en) | 2021-06-10 | 2021-06-10 | Stack type support with impact-resistant hydraulic prop and working method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111044350A (en) * | 2019-12-13 | 2020-04-21 | 辽宁工程技术大学 | Rigid impact protection device is prevented to impact test platform |
| CN113530579A (en) * | 2021-08-25 | 2021-10-22 | 中煤北京煤矿机械有限责任公司 | Hydraulic support stand is with buffering energy-absorbing mechanism convenient to replacement |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1425917A (en) * | 1964-03-06 | 1966-01-24 | hydraulically operated mine prop with friction locking device | |
| RU2150005C1 (en) * | 1999-03-24 | 2000-05-27 | Институт горного дела СО РАН | Hydraulic prop with protection from dynamic loads |
| CN2937478Y (en) * | 2006-06-22 | 2007-08-22 | 中国矿业大学 | Protection type suspension single hydraulic prop |
| CN201180547Y (en) * | 2008-02-20 | 2009-01-14 | 沈阳天安矿山机械科技有限公司 | Anti-impact cog timbering |
| CN103628901A (en) * | 2013-12-10 | 2014-03-12 | 辽宁工程技术大学 | Mining diameter-expanding type anti-impact single hydraulic bracket |
| CN110130953A (en) * | 2019-05-23 | 2019-08-16 | 辽宁工程技术大学 | A kind of compound erosion control energy absorption device |
| CN110905571A (en) * | 2019-12-18 | 2020-03-24 | 辽宁工程技术大学 | Diameter-expanding type energy absorption device for straight-line pipe |
| CN112627867A (en) * | 2020-12-31 | 2021-04-09 | 山东科技大学 | Hydraulic support double-cavity upright column jack structure and energy-absorbing impact-resistant constant-resistance method thereof |
-
2021
- 2021-06-10 CN CN202110648077.XA patent/CN113175338A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1425917A (en) * | 1964-03-06 | 1966-01-24 | hydraulically operated mine prop with friction locking device | |
| RU2150005C1 (en) * | 1999-03-24 | 2000-05-27 | Институт горного дела СО РАН | Hydraulic prop with protection from dynamic loads |
| CN2937478Y (en) * | 2006-06-22 | 2007-08-22 | 中国矿业大学 | Protection type suspension single hydraulic prop |
| CN201180547Y (en) * | 2008-02-20 | 2009-01-14 | 沈阳天安矿山机械科技有限公司 | Anti-impact cog timbering |
| CN103628901A (en) * | 2013-12-10 | 2014-03-12 | 辽宁工程技术大学 | Mining diameter-expanding type anti-impact single hydraulic bracket |
| CN110130953A (en) * | 2019-05-23 | 2019-08-16 | 辽宁工程技术大学 | A kind of compound erosion control energy absorption device |
| CN110905571A (en) * | 2019-12-18 | 2020-03-24 | 辽宁工程技术大学 | Diameter-expanding type energy absorption device for straight-line pipe |
| CN112627867A (en) * | 2020-12-31 | 2021-04-09 | 山东科技大学 | Hydraulic support double-cavity upright column jack structure and energy-absorbing impact-resistant constant-resistance method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111044350A (en) * | 2019-12-13 | 2020-04-21 | 辽宁工程技术大学 | Rigid impact protection device is prevented to impact test platform |
| CN113530579A (en) * | 2021-08-25 | 2021-10-22 | 中煤北京煤矿机械有限责任公司 | Hydraulic support stand is with buffering energy-absorbing mechanism convenient to replacement |
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