CN111997663A - Energy-absorbing yielding type steel support and supporting process thereof - Google Patents
Energy-absorbing yielding type steel support and supporting process thereof Download PDFInfo
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- CN111997663A CN111997663A CN202011065001.6A CN202011065001A CN111997663A CN 111997663 A CN111997663 A CN 111997663A CN 202011065001 A CN202011065001 A CN 202011065001A CN 111997663 A CN111997663 A CN 111997663A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 53
- 239000010959 steel Substances 0.000 title claims abstract description 53
- 230000008093 supporting effect Effects 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000008569 process Effects 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000010985 leather Substances 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 238000005086 pumping Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 description 12
- 230000006872 improvement Effects 0.000 description 9
- 101100521345 Mus musculus Prop1 gene Proteins 0.000 description 7
- 108700017836 Prophet of Pit-1 Proteins 0.000 description 7
- 239000003921 oil Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 239000000741 silica gel Substances 0.000 description 4
- 229910002027 silica gel Inorganic materials 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052755 nonmetal Inorganic materials 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 230000001066 destructive effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
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
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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
-
- 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
- E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
- E21D15/512—Arrangement of valves
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
- E21D17/006—Caps for supporting mine roofs characterised by the material
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention provides an energy-absorbing yielding type steel support and a supporting process thereof. The energy-absorbing yielding steel support comprises a first hydraulic support column, a second hydraulic support column and a steel cross beam, wherein the second hydraulic support column is parallel to and symmetrically arranged with the first hydraulic support column, and the steel cross beam is erected at the tops of the first hydraulic support column and the second hydraulic support column; the first hydraulic prop comprises an upper cylinder body, a lower cylinder body and a conical clamping ring, wherein the upper cylinder body and the lower cylinder body are sleeved with each other, and the conical clamping ring is nested at the joint of the upper cylinder body and the lower cylinder body; the bottom of the lower column body is provided with a valve for water inlet and outlet; the second hydraulic strut is structurally identical to the first hydraulic strut. Through the mode, the water medium is used for replacing an oil medium to serve as a hydraulic source for active supporting, after the strut achieves the set supporting force, the upper column body and the lower column body are fastened through the conical clamping ring, the water outlet valve is opened, and the friction resistance provided by the conical clamping ring plays a role in energy absorption and yielding, so that a better supporting effect is achieved; meanwhile, a beam-column integrated benign supporting system is utilized to effectively support and protect the whole roadway.
Description
Technical Field
The invention relates to the technical field of mine support, in particular to an energy-absorbing yielding type steel support and a support process thereof.
Background
Along with the increase of the mining depth of metal and nonmetal mines, the requirements on the supporting technical level of volatile and stable rock masses such as top plates and surrounding rocks are higher and higher, and how to improve the supporting effect of the support is a problem to be solved urgently at the present stage.
At present, the supports which are widely applied comprise hydraulic supports and mechanical rod-shaped supports for coal mines. Although the coal mine hydraulic support can achieve high supporting capacity, the coal mine hydraulic support is inconvenient to recover and complicated in step advancing process; and the whole supporting process has large material consumption and high manpower transportation cost, so that the practical application is limited, and the applicability to metal and nonmetal mines is poor. The mechanical rod-shaped support is smaller, more flexible and more convenient to use, but the supporting force of the mechanical rod-shaped support is insufficient, so that the ideal supporting effect is difficult to achieve.
Meanwhile, in metal and nonmetal mines, active support is used less, and most of the active support is passive support after mine pressure comes, so that damage is more serious, and the mine cannot be prevented from happening in the bud. In addition, in passive support, the mechanical strut cannot buffer the damage caused by pressure coming, the effect of energy absorption and pressure yielding cannot be achieved, and therefore the mechanical strut is extremely easy to damage and cannot be recycled after being damaged. In addition, the existing supporting columns are not combined with the beam body structure generally, the form is single, and a set of benign supporting system in a closed loop form is not formed.
To improve the existing support, patent publication No. CN210829314U provides a portal type advance support with a buffering energy absorbing device. The hydraulic support is characterized in that a left support beam, a right support beam and a guide beam are arranged, so that a beam body is combined with the hydraulic support; and an elastic buffer mechanism is arranged on the sliding beam to play a role in buffering and absorbing energy. However, the elastic buffer mechanism in the patent can only buffer the incoming pressure in the horizontal direction, and cannot play an effective buffer role in the pressure in the vertical direction; meanwhile, the beam body structure arranged in the patent is complex, so that the use is inconvenient, and a large load is brought to the hydraulic support; in addition, the hydraulic support of the patent uses hydraulic oil, so that the cost is high, the pollution is large, and the whole application is limited.
In view of the above, there is a need for an improved energy-absorbing and pressure-relieving profiled support to solve the above problems.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide an energy-absorbing yielding type steel bracket and a supporting process thereof. Erecting a steel cross beam on a first hydraulic prop and a second hydraulic prop to form a beam-column integrated benign supporting system; the conical snap ring is nested at the joint of the upper cylinder body and the lower cylinder body, so that the energy absorption and yielding effects are achieved while the upper cylinder body and the lower cylinder body are fixed; meanwhile, the water medium is used for replacing an oil medium to serve as a hydraulic source for active supporting, so that a good supporting effect is achieved through a simple structure and a convenient operation mode.
In order to achieve the purpose, the invention provides an energy-absorbing yielding steel support which comprises a first hydraulic support, a second hydraulic support and a steel cross beam, wherein the second hydraulic support is parallel to and symmetrically arranged with the first hydraulic support, and the steel cross beam is erected on the tops of the first hydraulic support and the second hydraulic support; the first hydraulic prop comprises an upper cylinder body, a lower cylinder body and a conical clamping ring, wherein the upper cylinder body and the lower cylinder body are sleeved with each other, and the conical clamping ring is nested at the joint of the upper cylinder body and the lower cylinder body; the bottom of the lower column body is provided with a valve for water inlet and outlet; the second hydraulic strut is structurally identical to the first hydraulic strut.
As a further improvement of the invention, the diameter of the upper surface of the conical snap ring is larger than that of the lower surface of the conical snap ring; and a notch penetrating through the upper surface and the lower surface is axially arranged on the side wall of the conical clamping ring.
As a further improvement of the invention, a tamping accessory is sleeved on the outer side of the upper column body, close to the position above the conical snap ring; the tamping accessory can move up and down along the upper column body and is used for tamping the conical snap ring to keep the conical snap ring fastened.
As a further improvement of the invention, the lower end of the upper column body is sleeved in the lower column body, and the bottom of the upper column body is provided with a leather cup for sealing.
As a further improvement of the invention, the top of the upper column body is of an upward-protruding hemispherical structure, and the top of the upper column body is covered with a top tray.
As a further improvement of the invention, the bottom of the lower column body is of a downward-protruding hemispherical structure which is symmetrical to the top of the upper column body, and the bottom of the lower column body is provided with a base which is symmetrical to the top tray.
As a further improvement of the invention, a plurality of handles are arranged on the side wall of the lower column body.
As a further improvement of the invention, the top of the upper column body is provided with a side tray for supporting the steel beam.
As a further improvement of the invention, the steel beam is an I-shaped steel beam.
As a further improvement of the invention, the inner diameter of the opening at the top of the lower cylinder is slightly larger than that of other parts of the cylinder, thus being beneficial to the installation and fastening of the tapered snap ring.
In order to achieve the purpose, the invention also provides a supporting process of the energy-absorbing yielding steel bracket, which comprises the following steps:
s1, after the first hydraulic support and the second hydraulic support are checked to ensure that the connection of each part is correct and the parts are not damaged, erecting the first hydraulic support and the second hydraulic support to enable the first hydraulic support and the second hydraulic support to be vertical to the top plate surface;
s2, opening a valve, and pumping water into the first hydraulic support and the second hydraulic support to enable the upper surfaces of the first hydraulic support and the second hydraulic support to be in contact with the top plate;
s3, erecting a steel cross beam on the tops of the first hydraulic support and the second hydraulic support, and continuously pumping water into the valve until the water injection pressure reaches a set value; the first hydraulic prop and the second hydraulic prop are firmly pressed against the top plate;
s4, moving the tamping and tamping accessory up and down to tamp and smash the conical clamping ring, so that the conical clamping ring is fastened;
and S5, opening the valve, and discharging the water in the first hydraulic prop and the second hydraulic prop, namely completing the support work.
The invention has the beneficial effects that:
(1) according to the invention, the conical snap ring is nested at the joint of the upper cylinder body and the lower cylinder body, and the gap is arranged on the side wall of the conical snap ring, so that the upper cylinder body and the lower cylinder body can be effectively fixed by the conical snap ring which is fastened after being tamped, and a firm organic whole is formed; the hydraulic prop has the advantages that the hydraulic prop can also play a role in pressure resistance when pressure comes, the destructive energy is absorbed, the destructiveness of the pressure comes is fully reduced, the hydraulic prop has a buffer room in the vertical direction, irrecoverable loss caused by the damage of surrounding rocks of the top plate and the like can be avoided, and the effect of energy absorption and pressure yielding is achieved.
(2) On the basis that the bottom of the lower cylinder body is provided with the leather cup for sealing, the interior of the hydraulic prop can achieve a better sealing degree, the valve for water inlet and outlet is arranged at the bottom of the lower cylinder body, water can be used as a hydraulic source for active supporting of the hydraulic prop, after the hydraulic loading enables the prop to achieve a set supporting force, the conical clamping ring is fastened, the valve is opened for water drainage, the energy absorption and pressure yielding effects can be achieved by means of the friction resistance provided by the conical clamping ring, the actual supporting effect is obviously superior to that of passive supporting, and the function of preventing accidents can be achieved. Compared with the prior art that the oil liquid is used as the hydraulic source, the invention uses water as the hydraulic source, thereby solving the problems of high cost and large pollution of the oil liquid, avoiding the problem of easy leakage when water is used as the hydraulic source in the traditional technology, being easy to take water on site, being capable of being pumped and stored at any time for use, having no pollution in the whole process, being capable of recycling the water source, being capable of practically achieving the pressure bearing capacity of 15-20 tons, and being capable of meeting the requirements of practical application.
(3) According to the invention, the steel cross beams are erected on the first hydraulic prop and the second hydraulic prop, and the integrated common supporting function of the beam columns can be utilized, so that the effect of supporting the stress concentration area of the side wall is achieved, the roof is prevented from falling off, the whole roadway is supported and protected, and a benign supporting system in a closed-loop form is formed.
(4) In the energy-absorbing yielding type steel support provided by the invention, the hydraulic prop is small and exquisite in structure, convenient to use and adjustable in length, and the supporting elevation range can be flexibly changed so as to meet the use requirements under different conditions. Simultaneously, this support mounting is simple, save labour, but reuse, and the pumping time is shorter, overall efficiency is higher, and use safe and reliable, easily maintenance can reach better effect of strutting through the mode that dynamic pressure-bearing and static pressure-bearing combined together to satisfy practical application's demand.
Drawings
FIG. 1 is a schematic structural diagram of an energy-absorbing yielding steel bracket provided by the invention.
FIG. 2 is an exploded view of the first hydraulic prop in the energy-absorbing crush section steel support provided by the invention.
Reference numerals:
1. a first hydraulic prop; 11. an upper column; 111. a leather cup; 112. a top tray; 113. a side tray; 12. a lower column; 121. a valve; 122. a base; 123. a handle; 13. a tapered snap ring; 2. a second hydraulic strut; 3. a steel beam; 4. tamping and smashing accessories.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the aspects of the present invention are shown in the drawings, and other details not closely related to the present invention are omitted.
In addition, it is also to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
As shown in fig. 1 to 2, the invention provides an energy-absorbing yielding steel support, which comprises a first hydraulic prop 1, a second hydraulic prop 2 arranged in parallel and symmetrically with the first hydraulic prop 1, and a steel beam 3 erected on the tops of the first hydraulic prop 1 and the second hydraulic prop 2. Wherein the first hydraulic prop 1 and the second hydraulic prop 2 are identical in structure.
Specifically, referring to fig. 2, the first hydraulic prop 1 includes an upper cylinder 11, a lower cylinder 12 sleeved with each other, and a tapered snap ring 13 nested at a joint of the upper cylinder 11 and the lower cylinder 12. The diameter of the upper surface of the conical snap ring 13 is larger than that of the lower surface of the conical snap ring, and a gap penetrating through the upper surface and the lower surface is further formed in the side wall of the conical snap ring along the axial direction. Based on the arrangement mode, the conical snap ring 13 can stretch in the radial direction, so that the conical snap ring can move up and down in a certain range, and the upper column body 11 and the lower column body 12 can be effectively fixed; the device can also play a role in pressure resistance when in pressure coming, absorb the destructive energy and fully reduce the destructiveness of the pressure coming; and the hydraulic prop has a buffer room in the vertical direction, so that irrecoverable loss caused by damage of surrounding rocks of the top plate and the like can be avoided, and the effects of energy absorption and yielding are achieved.
A valve 121 for water inlet and outlet is also provided at the bottom of the lower column 12, through which valve 121 water can be pumped and drained into the hydraulic prop. A leather cup 111 for sealing is further arranged at the bottom of the upper column body 11 to ensure that the interior of the hydraulic support column can achieve better sealing, so that water pumped in through the valve 121 is not easy to leak. On the basis, the invention can replace the oil medium in the prior art with the water medium, the water medium can be obtained on site and can be pumped and stored for use at any time, the whole process is pollution-free, and the water source can be recycled. Meanwhile, water is pumped into the hydraulic support from the valve 121, the hydraulic support can be prompted to generate upward prefabricated bearing pressure in a water injection stamping mode, after the conical clamping ring 13 is fastened, the valve 121 is opened to drain water, the energy absorption yielding effect is achieved by means of friction resistance provided by the conical clamping ring 13, the actual supporting effect is obviously superior to passive supporting, and the function of preventing accidents can be achieved.
In one embodiment of the invention, a tamping accessory 4 is further sleeved outside the upper column body 11 and at a position close to the upper part of the conical snap ring 13; the tamping accessory 4 can move up and down along the upper column body 11 and is used for tamping the conical snap ring 13 to keep the conical snap ring 13 fastened.
In an embodiment of the present invention, the lower end of the upper cylinder 11 is sleeved inside the lower cylinder 12, and the inner diameter of the opening at the top of the lower cylinder 12 is slightly larger than the inner diameter of the other positions of the lower cylinder 12, so as to facilitate the installation and fastening of the tapered snap ring 13. Meanwhile, the leather cup 111 arranged at the bottom of the upper column body 11 is a silica gel leather cup, so that a good sealing effect is achieved between the upper column body 11 and the lower column body 12, and water in the hydraulic support is prevented from leaking. In other embodiments of the present invention, the cup 111 disposed at the bottom of the upper column 11 may be made of other materials, so as to keep a good seal inside the hydraulic prop, which is not limited by the present invention.
In an embodiment of the present invention, the top of the upper column 11 is an upward protruding semispherical structure, and the top of the upward protruding semispherical structure is covered with a top tray 112, so that the upper column 11 is in close contact with the top plate, and a good supporting function is achieved; meanwhile, the bottom of the lower column 12 is a downward-protruding hemispherical structure symmetrical to the top of the upper column 11, and the bottom of the downward-protruding hemispherical structure is further provided with a base 122 symmetrical to the top tray 112, so that the lower column 12 is in close contact with the bottom plate, and a stable supporting function is provided for the hydraulic prop.
In one embodiment of the present invention, two handles 123 are provided on the sidewall of the lower column 12 in the vertical direction for installation and support. In other embodiments of the present invention, the number and the position of the handles 123 can be set according to practical situations, and the present invention is not limited thereto.
In one embodiment of the invention, the top of the upper column 11 is provided with a side tray 113 for supporting the erected steel beam 3 to keep it stable.
In one embodiment of the invention, the steel beam 3 is an i-beam 3. In other embodiments of the present invention, the steel beam 3 may be a steel beam with other structure, and may play a role of stable support, which is not limited by the present invention.
Based on the energy-absorbing yielding type steel bracket provided by the invention, the invention also provides a supporting process of the bracket, which specifically comprises the following steps:
s1, placing neat and stable bases 122 at the places where the first hydraulic prop 1 and the second hydraulic prop 2 need to be installed respectively, and cleaning and lubricating water injection ports of the hydraulic props; and (4) checking whether the silica gel leather cup 111 at the bottom of the upper column body 11 is damaged or not, and if the silica gel leather cup 111 is damaged, correspondingly replacing the silica gel leather cup. After the connection of the respective parts is ensured to be correct and clean without damage, the first hydraulic prop 1 and the second hydraulic prop 2 are erected so as to be perpendicular to the ceiling surface, and the top tray 112 is mounted on the top of each hydraulic prop.
And S2, connecting the water injection pipe to each hydraulic prop to ensure that the water injection pin is locked. Then the valve 121 is opened, water is pumped into each hydraulic support, and the upper surface of each hydraulic support is contacted with the top plate and the lower surface is contacted with the bottom plate by utilizing the hydraulic stamping principle, so that the hydraulic support achieves the effect of self-standing.
S3, erecting an I-shaped steel beam 3 between the tops of the first hydraulic support column 1 and the second hydraulic support column 2, and continuously pumping water into each hydraulic support column through a valve 121 until a water injection release valve falls off (after a set water injection pressure is reached); at this point, the hydraulic struts have been firmly braced against the roof, forming a first barrier for active bracing.
And S4, hammering the ramming and hammering accessory 4 from the highest position of the hydraulic support to the conical clamping ring 13, and repeating for multiple times to fasten the conical clamping ring 13 in place.
S5, opening the valve 121 at the bottom of the lower column body 12, discharging water in each hydraulic support column, and keeping the support column supporting work by the conical snap ring 13; and then taking the water injection connecting device down from the hydraulic prop and carrying out rust prevention protection on the inner pipe. And after checking whether each hydraulic prop is installed in place according to the requirement again, the supporting work can be completed, and the good combined supporting effect of the hydraulic props and the I-shaped steel beam is achieved.
Through the mode, the energy-absorbing yielding type steel support provided by the invention can achieve an active supporting effect by utilizing an easy-to-use pollution-free water medium, achieves an energy-absorbing yielding effect by utilizing the conical clamp ring, and simultaneously achieves a good supporting system in a closed-loop form by integrally forming the beam column, thereby achieving a better supporting effect. Meanwhile, the energy-absorbing yielding steel support is simple to mount, labor force is saved, and the energy-absorbing yielding steel support can be repeatedly recycled; and the supporting process based on the energy-absorbing yielding type steel support is easy to operate, short in water pumping time, high in overall efficiency, safe and reliable in use and easy to maintain, and can achieve a better supporting effect through a mode of combining dynamic pressure bearing and static pressure bearing.
In conclusion, the invention provides an energy-absorbing yielding type steel bracket and a supporting process thereof. The energy-absorbing yielding steel support comprises a first hydraulic support column, a second hydraulic support column and a steel cross beam, wherein the second hydraulic support column is parallel to and symmetrically arranged with the first hydraulic support column, and the steel cross beam is erected at the tops of the first hydraulic support column and the second hydraulic support column; the first hydraulic prop comprises an upper cylinder body, a lower cylinder body and a conical clamping ring, wherein the upper cylinder body and the lower cylinder body are sleeved with each other, and the conical clamping ring is nested at the joint of the upper cylinder body and the lower cylinder body; the bottom of the lower column body is provided with a valve for water inlet and outlet; the second hydraulic strut is structurally identical to the first hydraulic strut. Through the mode, the hydraulic support can be actively supported by using a water medium instead of an oil medium as a hydraulic source, after the strut reaches a set supporting force through hydraulic loading, the upper cylinder and the lower cylinder are fastened by using the conical clamping ring, then the water outlet valve is opened, and the effect of energy absorption and pressure yielding is achieved by means of the friction resistance provided by the conical clamping ring, so that the use is convenient and fast, and a better supporting effect is achieved; meanwhile, the invention can also utilize a beam-column integrated benign supporting system to effectively support and protect the whole roadway so as to meet the requirements of practical application.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.
Claims (10)
1. The utility model provides an energy-absorbing lets pressure profiled bar support which characterized in that: the hydraulic support comprises a first hydraulic support column (1), a second hydraulic support column (2) which is parallel to and symmetrically arranged with the first hydraulic support column (1), and a steel cross beam (3) which is erected on the tops of the first hydraulic support column (1) and the second hydraulic support column (2); the first hydraulic prop (1) comprises an upper cylinder (11), a lower cylinder (12) and a conical snap ring (13), wherein the upper cylinder (11) and the lower cylinder (12) are sleeved with each other; a valve (121) for water inlet and outlet is arranged at the bottom of the lower column body (12); the second hydraulic prop (2) is structurally identical to the first hydraulic prop (1).
2. The energy-absorbing yielding steel bracket as claimed in claim 1, wherein: the diameter of the upper surface of the conical clamping ring (13) is larger than that of the lower surface of the conical clamping ring; and a notch penetrating through the upper surface and the lower surface is axially arranged on the side wall of the conical clamping ring (13).
3. The energy-absorbing yielding steel bracket as claimed in claim 1, wherein: a tamping accessory (4) is sleeved at the position, close to the upper part of the conical snap ring (13), on the outer side of the upper cylinder (11); the tamping accessory (4) can move up and down along the upper column body (11) and is used for tamping the conical snap ring (13) to keep the conical snap ring fastened.
4. The energy-absorbing yielding steel bracket as claimed in claim 1, wherein: the lower end of the upper column body (11) is sleeved inside the lower column body (12), and a leather cup (111) for sealing is arranged at the bottom of the upper column body (11).
5. The energy-absorbing yielding steel bracket as claimed in claim 1, wherein: the top of the upper column body (11) is of an upward-protruding hemispherical structure, and a top tray (112) is covered on the top of the upper column body (11).
6. The energy-absorbing yielding steel bracket as claimed in claim 5, wherein: the bottom of the lower column body (12) is of a downward-protruding hemispherical structure which is symmetrical to the top of the upper column body (11), and the bottom of the lower column body (12) is provided with a base (122) which is symmetrical to the top tray (112).
7. The energy-absorbing yielding steel bracket as claimed in claim 1, wherein: the side wall of the lower column body (12) is provided with a plurality of handles (123).
8. An energy-absorbing yield section steel support according to any one of claims 1 to 7, wherein: and a side tray (113) used for supporting the steel beam (3) is arranged at the top of the upper column body (11).
9. An energy-absorbing yield section steel support according to any one of claims 1 to 8, wherein: the steel beam (3) is an I-shaped steel beam.
10. The supporting process of the energy-absorbing yielding steel section bracket as claimed in any one of claims 1 to 9, which is characterized by comprising the following steps:
s1, after the first hydraulic support (1) and the second hydraulic support (2) are checked to ensure that the connection of the parts is correct and the parts are not damaged, erecting the first hydraulic support (1) and the second hydraulic support (2) to be vertical to the top plate surface;
s2, opening a valve (121), pumping water into the first hydraulic support column (1) and the second hydraulic support column (2), and enabling the upper surfaces of the first hydraulic support column (1) and the second hydraulic support column (2) to be in contact with the top plate;
s3, erecting a steel cross beam (3) at the tops of the first hydraulic support column (1) and the second hydraulic support column (2), and continuously pumping water into the valve (121) until the water injection pressure reaches a set value; the first hydraulic prop (1) and the second hydraulic prop (2) are firmly pressed against the top plate;
s4, moving the tamping and tamping accessory (4) up and down to tamp and smash the conical clamping ring (13) so as to fasten the conical clamping ring (13);
and S5, opening the valve (121) and discharging the water in the first hydraulic support column (1) and the second hydraulic support column (2), namely completing the support work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011065001.6A CN111997663B (en) | 2020-09-30 | 2020-09-30 | Energy-absorbing yielding type steel support and supporting process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011065001.6A CN111997663B (en) | 2020-09-30 | 2020-09-30 | Energy-absorbing yielding type steel support and supporting process thereof |
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| CN1185193A (en) * | 1995-04-20 | 1998-06-17 | 泰奥多尔·科尔克 | Prop for used in underground mining or tunnel construction |
| CN1844684A (en) * | 2006-05-08 | 2006-10-11 | 张连墩 | Shockproof locknut capable of positioning and automatically enhancing self-locking strength when securing |
| WO2011032525A1 (en) * | 2009-09-16 | 2011-03-24 | Wolfgang Voss | Pressure limiting valve for large connection widths |
| CN109098738A (en) * | 2018-09-20 | 2018-12-28 | 山东科技大学 | A kind of heading two helps deformation hydraulic prop device and its implementation |
| CN210829314U (en) * | 2019-09-23 | 2020-06-23 | 山东赛诺机电设备科技有限公司 | Gate-type fore support with buffering energy-absorbing device |
| CN211008683U (en) * | 2019-11-23 | 2020-07-14 | 张勇 | Colliery tunnelling supporting device with regulatory function |
| CN211058823U (en) * | 2019-07-29 | 2020-07-21 | 石家庄博安煤矿机械制造有限公司 | Hydraulic water stand column for coal mine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1185193A (en) * | 1995-04-20 | 1998-06-17 | 泰奥多尔·科尔克 | Prop for used in underground mining or tunnel construction |
| CN1844684A (en) * | 2006-05-08 | 2006-10-11 | 张连墩 | Shockproof locknut capable of positioning and automatically enhancing self-locking strength when securing |
| WO2011032525A1 (en) * | 2009-09-16 | 2011-03-24 | Wolfgang Voss | Pressure limiting valve for large connection widths |
| CN109098738A (en) * | 2018-09-20 | 2018-12-28 | 山东科技大学 | A kind of heading two helps deformation hydraulic prop device and its implementation |
| CN211058823U (en) * | 2019-07-29 | 2020-07-21 | 石家庄博安煤矿机械制造有限公司 | Hydraulic water stand column for coal mine |
| CN210829314U (en) * | 2019-09-23 | 2020-06-23 | 山东赛诺机电设备科技有限公司 | Gate-type fore support with buffering energy-absorbing device |
| CN211008683U (en) * | 2019-11-23 | 2020-07-14 | 张勇 | Colliery tunnelling supporting device with regulatory function |
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| CN111997663B (en) | 2022-03-01 |
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