CN112761695A - Colliery hydraulic support system - Google Patents
Colliery hydraulic support system Download PDFInfo
- Publication number
- CN112761695A CN112761695A CN202011639246.5A CN202011639246A CN112761695A CN 112761695 A CN112761695 A CN 112761695A CN 202011639246 A CN202011639246 A CN 202011639246A CN 112761695 A CN112761695 A CN 112761695A
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- Prior art keywords
- plate
- hydraulic
- arc
- support system
- supporting
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
- E21D23/0472—Supports specially adapted for people walking or transporting material
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
Abstract
The invention provides a coal mine hydraulic support system which comprises two obliquely arranged jacking hydraulic columns, wherein the upper ends of the two jacking hydraulic columns are far away from each other and are respectively detachably connected with arc-shaped supporting plates; the two vertical supporting plates are respectively positioned on two sides of the two jacking hydraulic columns; the hydraulic support is characterized by further comprising a floor plate located between the two supporting hydraulic columns, wherein a plurality of fixing nails are arranged on the floor plate, and a plurality of communicating holes are further formed in the floor plate. The invention adopts the two arc-shaped supporting plates to form the arch-shaped supporting frame, optimizes the stress structure of the hydraulic support system, ensures that the hydraulic support system is more stable, and further ensures the safety of the mine hole.
Description
Technical Field
The invention relates to the technical field of coal mine safety auxiliary equipment systems, in particular to a coal mine hydraulic support system.
Background
The hydraulic support is an important component of the comprehensive coal mining equipment, and can reliably and effectively support and control a top plate of a working face, isolate a goaf, prevent gangue from entering a stope face, and prevent equipment such as a conveyor from entering and exiting a mine hole.
Colliery hydraulic support among the prior art generally adopts a plurality of hydraulic prop to support the top in mine hole, and hydraulic prop is located the both sides in mine hole, sets up the guard plate at its top, and hydraulic prop is connected with the guard plate to the realization is to the support in mine hole. However, the supporting structure is simple and crude, and the middle section of the top of the mine hole is lack of supporting force, so that the protection plate is broken easily at the middle section, and safety accidents are caused.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a coal mine hydraulic support system, which solves the problem that the middle section of a protection plate is broken by pressure easily to cause safety accidents due to the fact that the middle section of the top of a mine hole is lack of support by a hydraulic support in the prior art.
According to the embodiment of the invention, the coal mine hydraulic support system comprises two obliquely arranged jacking hydraulic columns, the upper ends of the two jacking hydraulic columns are far away from each other and are respectively detachably connected with arc-shaped supporting plates, one ends of the two arc-shaped supporting plates are far away from the jacking hydraulic columns connected with the two arc-shaped supporting plates, the other ends of the two arc-shaped supporting plates are detachably connected, and the two arc-shaped supporting plates surround to form an arch-shaped support frame;
the hydraulic support system also comprises two vertical supporting plates positioned at the lower end of the arched support frame, and the two vertical supporting plates are respectively positioned at two sides of the two jacking hydraulic columns;
the hydraulic support system further comprises a floor plate located between the two supporting hydraulic columns, a plurality of fixing nails are arranged on the floor plate, and a plurality of communicating holes are further formed in the floor plate.
In the above embodiment, two arc backplate upper ends that set up offset, enclose into the arch support frame, respectively will receive the pressure water conservancy diversion to the back-up hydraulic column of both sides on, reduced the stress strength of braced frame in the middle section to make the support frame be difficult for breaking at the middle section, guarantee mine opening safety.
Further, the both sides of bed board are provided with the confession prop up the articulated mount pad of top hydraulic column, just the mount pad with be provided with a side hydraulic column between the vertical supporting board, prop up the side hydraulic column with the mount pad reaches vertical supporting board is articulated.
Furthermore, first sunken platforms positioned on two sides of the upper plate surface of the plank are arranged on the upper plate surface of the plank, and the fixing nail and the communication hole are arranged between the two first sunken platforms; the mounting base is provided with a second sunken table close to the first sunken table, a rubber plate is covered between the first sunken table and the second sunken table, and the rubber plate is in threaded connection with the second sunken table through a first screw.
Furthermore, a first hinge seat is fixedly connected to the mounting seat, and the supporting hydraulic column is hinged to the first hinge seat; one side of the mounting seat, which is far away from the bed plate, is provided with a hinge groove, and the branch side hydraulic column is hinged in the hinge groove.
Furthermore, a second hinge seat is fixedly connected to the vertical supporting and protecting plate, and one end, far away from the hinge groove, of the supporting side hydraulic column is hinged to the second hinge seat; the vertical supporting and protecting plate is also provided with a plurality of first water guide holes penetrating through the vertical supporting and protecting plate.
Furthermore, one end of the arc-shaped supporting and protecting plate is connected with a bending plate through a second screw rod, the supporting and jacking hydraulic column is fixedly connected with the bending plate, and the bending plate comprises an inclined section connected with the arc-shaped supporting and protecting plate and the supporting and jacking hydraulic column and a horizontal section located between the two supporting and jacking hydraulic columns.
Furthermore, a connecting plate is arranged below one end, far away from the inclined section connected with the two arc-shaped supporting plates, of the inclined section, two ends of the connecting plate are connected with the two arc-shaped supporting plates through third screw rods respectively, and a 90-degree included angle is formed between the third screw rods and the inner arc surfaces of the arc-shaped supporting plates.
Furthermore, the upper plate surface of the connecting plate is provided with an arc-shaped supporting surface, and the two arc-shaped supporting plates are tightly attached to the arc-shaped supporting surface; the connecting plate is provided with an inclined threaded hole for the third screw rod to connect, the inclined threaded hole is internally and further in threaded connection with an installation column located below the third screw rod, and a spring is arranged between the connecting plate and the horizontal section, wherein the upper end of the spring is fixedly connected with the installation column, and the lower end of the spring is fixedly connected with the horizontal section.
Furthermore, the lower end of the inclined section is located above the lower end of the arc-shaped supporting plate, a second water guide hole is formed in the arc-shaped supporting plate, the upper end face of the second water guide hole is located above the lower end face of the inclined section, and the lower end face of the second water guide hole is located below the lower end face of the inclined section.
Furthermore, an inclined plane is arranged at one side, close to the floor, of the upper end of the vertical supporting and protecting plate, and an opening at the lower end of the second water guide hole is located right above the inclined plane.
Compared with the prior art, the invention has the following beneficial effects:
the arched support frame formed by enclosing the two arc-shaped supporting plates is adopted to replace the support frame in the prior art, so that the acting force applied to the middle section of the support frame can be guided to the supporting hydraulic columns on the two sides, the load of the middle section of the support frame is reduced, and the safety of the mine tunnel is effectively ensured;
meanwhile, vertical supporting plates are arranged on two sides of the supporting frame for protection, so that two sides of the mine hole are reinforced, and collapse accidents on two sides of the mine hole are prevented;
the floor is arranged below the supporting frame, so that the bottom of the mine hole is smoother, and equipment and personnel can conveniently pass through the mine hole.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
FIG. 2 is a schematic top view of a plank according to an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of the structure at A in FIG. 1;
FIG. 4 is a schematic view of the relative position between the first hinged seat and the deck according to an embodiment of the present invention;
FIG. 5 is an enlarged view of a portion of the structure at B in FIG. 1;
FIG. 6 is a schematic diagram of a vertical supporting plate structure according to an embodiment of the present invention;
FIG. 7 is an enlarged view of a portion of the structure at C in FIG. 1; (ii) a
In the above drawings:
prop up hydraulic column 1, arc and prop up backplate 2, vertical supporting plate 3, bed board 4, staple 5, intercommunicating pore 6, mount pad 7, prop up side hydraulic column 8, rubber slab 9, first screw thread 10, first articulated seat 11, articulated groove 12, installation pole 13, second articulated seat 14, first water guiding hole 15, second screw rod 16, bent plate 17, slope section 18, horizontal segment 19, connecting plate 20, third screw rod 21, installation post 22, spring 23, second water guiding hole 24, inclined plane 25, first depressed platform 26.
Detailed Description
The technical solution of the present invention is further explained with reference to the drawings and the embodiments.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
As shown in fig. 1 and 2, the embodiment provides a coal mine hydraulic support system, which includes two hydraulic props 1 arranged obliquely, upper ends of the two hydraulic props 1 are arranged away from each other and detachably connected with arc-shaped prop plates 2 respectively, one ends of the two arc-shaped prop plates 2 are arranged away from the hydraulic prop 1 connected therewith and the other ends of the two arc-shaped prop plates 2 are detachably connected, and the two arc-shaped prop plates 2 enclose an arch-shaped support frame;
the hydraulic support system also comprises two vertical supporting and protecting plates 3 positioned at the lower end of the arched support frame, and the two vertical supporting and protecting plates 3 are respectively positioned at two sides of the two jacking hydraulic columns 1;
the hydraulic support system also comprises a bed plate 4 positioned between the two supporting hydraulic columns 1, a plurality of fixing nails 5 are arranged on the bed plate 4, the bed plate 4 is nailed on the ground of the mine hole through the fixing nails 5 to prevent the bed plate 4 from moving back and forth when being penetrated by equipment personnel, a plurality of communication holes 6 are also arranged on the bed plate 4, the communication holes 6 are used for water on the ground of the mine hole to penetrate, upward buoyancy is prevented from being applied to the bed plate 4 by water under the bed plate 4, and therefore the stability of the whole system is effectively guaranteed;
wherein, will prop up 1 slope settings of hydraulic column, can vacate bigger effective utilization space in for the mine cavity, take place the striking with prop up hydraulic column 1 when preventing that equipment is current, further guarantee mine cavity safety, simultaneously, the slope sets up makes prop up hydraulic column 1 can receive partly pressure that comes from the mine cavity side to alleviate the load of vertical fender board 3.
In the above embodiment, the upper ends of the two arc-shaped supporting plates 2 are abutted to each other to form the arch-shaped supporting frame, and the pressure flow to be received is guided to the supporting hydraulic columns 1 on the two sides respectively, so that the stress strength of the supporting frame at the middle section is reduced, the supporting frame is not easy to break at the middle section, and the safety of the mine cavity is ensured.
In the embodiment, the arched support frame formed by enclosing the two arc-shaped supporting plates 2 is used for replacing the support frame in the prior art, so that the acting force applied to the middle section of the support frame can be guided to the supporting hydraulic columns 1 on the two sides, the load of the middle section of the support frame is reduced, and the safety of the mine cave is effectively ensured; meanwhile, vertical supporting plates are arranged on two sides of the supporting frame for protection, so that two sides of the mine hole are reinforced, and collapse accidents on two sides of the mine hole are prevented; the floor plate 4 is arranged below the supporting frame, so that the bottom of the mine hole is smoother, and equipment and personnel can conveniently pass through the mine hole.
As shown in fig. 1, preferably, mounting seats 7 for hinging the supporting hydraulic columns 1 are arranged on two sides of the bed plate 4, a supporting hydraulic column 8 is arranged between the mounting seat 7 and the vertical supporting guard plate 3, and the supporting hydraulic column 8, the mounting seat 7 and the vertical supporting guard plate 3 are hinged. The side hydraulic column 8 that props up that sets up supports vertical backplate 3 tightly on the mine hole side, realizes the reinforcement to the mine hole side, and especially, the side hydraulic column 8 that props up also sets up for the slope, makes vertical backplate 3 more difficult to move down like this to make whole system have better stability.
As shown in fig. 2 and 3, preferably, the upper plate surface of the plank 4 is provided with first recessed platforms 26 at both sides thereof, and the fixing nail 5 and the communication hole 6 are both arranged between the two first recessed platforms 26; the mounting base 7 is provided with a second sunken table close to the first sunken table 26, the first sunken table 26 and the second sunken table are covered with a rubber plate 9, and the rubber plate 9 is connected with the second sunken table through a first screw thread 10. Rubber slab 9 carries out the gland to bed plate 4, realizes the flexible coupling of bed plate 4 and mount pad 7, and both do not have direct connection relation, and when equipment personnel passed, the vibration of production can be absorbed by rubber slab 9 to make the influence that props up hydraulic column 1 and prop up side hydraulic column 8 and avoid vibrating, guarantee that entire system's stability is not destroyed.
As shown in fig. 4, preferably, a first hinge seat 11 is fixedly connected to the mounting seat 7, and the supporting hydraulic column 1 is hinged to the first hinge seat 11; one side of the mounting seat 7, which is far away from the floor 4, is provided with a hinge groove 12, and the branch side hydraulic column 8 is hinged in the hinge groove 12. And mounting rods 13 are arranged in the first hinge base 11 and the hinge groove 12, and the supporting hydraulic column 1 and the supporting hydraulic column 8 are hinged and mounted through the mounting rods 13 in the first hinge base and the hinge groove 12 respectively.
As shown in fig. 1 and 5, preferably, one end of the arc-shaped supporting and protecting plate 2 is connected with a bending plate 17 through a second screw 16, and the supporting and protecting plate 1 is fixedly connected with the bending plate 17, wherein the bending plate 17 comprises an inclined section 18 connected with the arc-shaped supporting and protecting plate 2 and the supporting and protecting plate 1, and a horizontal section 19 located between the two supporting and protecting plates 1. The setting of slope section 18 is used for realizing the supporting role of a hydraulic column 1 to an arc backplate 2, and horizontal segment 19 is located the middle section upper end in ore deposit hole, can play the effect of limit for height, prevents that high too high equipment from causing the striking to an arc backplate 2 of top, and simultaneously, the setting of slope section 18 can upwards lift an arc backplate 2 for the arc is more stable to an backplate 2.
As shown in fig. 1 and 5, preferably, a connecting plate 20 is arranged below one end of each of the two arc-shaped support and protection plates 2, which is far away from the inclined section 18 connected to the two arc-shaped support and protection plates, two ends of the connecting plate 20 are respectively connected to the two arc-shaped support and protection plates 2 through third screws 21, and an included angle of 90 degrees is formed between the third screws 21 and the inner arc surfaces of the arc-shaped support and protection plates 2, so that the third screws 21 are obliquely arranged and are not easy to loosen. The two third screws 21 connect the connecting plate 20 between the two arc-shaped supporting plates 2, thereby realizing the detachable connection of the two arc-shaped supporting plates 2.
As shown in fig. 1 and 5, preferably, the upper plate surface of the connecting plate 20 is provided with an arc-shaped supporting surface, and the two arc-shaped supporting plates 2 are tightly attached to the arc-shaped supporting surface, so that the connecting plate 20 provides effective supporting force for the arc-shaped supporting plates 2; an inclined threaded hole for connecting the third screw 21 is formed in the connecting plate 20, an installation column 22 located below the third screw 21 is further in threaded connection in the inclined threaded hole, and a spring 23 is further arranged between the connecting plate 20 and the horizontal section 19, wherein the upper end of the spring is fixedly connected with the installation column 22, and the lower end of the spring is fixedly connected with the horizontal section 19. The spring 23 is arranged, so that the energy absorption effect can be achieved, and the stability of the middle section of the arched support frame is further improved.
As shown in fig. 1 and 6, preferably, a second hinge base 14 is fixedly connected to the vertical support guard plate 3, and one end of the support-side hydraulic column 8, which is away from the hinge groove 12, is hinged to the second hinge base 14 (a mounting rod 13 is also arranged in the second hinge base 14 and is used for connecting the support-side hydraulic column 8); the vertical supporting plate 3 is also provided with a plurality of first water guide holes 15 penetrating through the vertical supporting plate. First water guide hole 15 can be with the water conservancy diversion of mine cave side to the mine cave in, guarantee mine cave safety is taken away through the water pumper of peripheral hardware etc., especially, in order to prevent the solid of mine cave side from following water loss, can also install the steel filter screen on vertical supporting plate 3, intercept solid matter (like silt), wherein, first water guide hole 15 slope sets up, and the one end that is close to bed board 4 is lower, can play better water guide effect, the steel filter screen also can be installed in the upper end of first water guide hole 15, play better interception effect.
As shown in fig. 1 and 7, preferably, the lower end of the inclined section 18 is located above the lower end of the arc-shaped supporting and protecting plate 2, a second water guide hole 24 is formed in the arc-shaped supporting and protecting plate 2, the upper end surface of the second water guide hole 24 is located above the lower end surface of the inclined section 18, and the lower end surface of the second water guide hole 24 is located below the lower end surface of the inclined section 18. The second water guide hole 24 is used for guiding water at the bottom of the mine hole to the ground of the mine hole, so that the water can be conveniently pumped away.
As shown in fig. 1, 6 and 7, preferably, in order to prevent water from the second water guide holes 24 from affecting the side of the mine cavity, an inclined plane 25 is arranged at the upper end of the vertical support guard plate 3 close to one side of the floor plate 4, the lower end openings of the second water guide holes 24 are positioned right above the inclined plane 25, and water from the second water guide holes 24 falls on the inclined plane 25 and then flows to the ground of the mine cavity through the vertical support guard plate 3.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. A coal mine hydraulic support system is characterized by comprising two obliquely arranged jacking hydraulic columns, wherein the upper ends of the two jacking hydraulic columns are far away from each other and are detachably connected with arc-shaped supporting plates respectively; the two vertical supporting plates are respectively positioned on two sides of the two jacking hydraulic columns;
the hydraulic support is characterized by further comprising a floor plate located between the two supporting hydraulic columns, wherein a plurality of fixing nails are arranged on the floor plate, and a plurality of communicating holes are further formed in the floor plate.
2. The coal mine hydraulic support system according to claim 1, wherein mounting seats for the hydraulic prop to hinge are arranged on two sides of the bed plate, a hydraulic prop is arranged between each mounting seat and the vertical support plate, and the hydraulic prop is hinged with the mounting seats and the vertical support plate.
3. The hydraulic support system for coal mines according to claim 2, wherein the upper deck of the deck is provided with first recessed platforms on both sides thereof, and the fixing nail and the communication hole are both provided between the first recessed platforms; the mounting base is provided with a second sunken table close to the first sunken table, a rubber plate is covered between the first sunken table and the second sunken table, and the rubber plate is in threaded connection with the second sunken table through a first screw.
4. The hydraulic support system for the coal mine according to claim 2, wherein a first hinge base is fixedly connected to the mounting base, and the supporting hydraulic column is hinged to the first hinge base; one side of the mounting seat, which is far away from the bed plate, is provided with a hinge groove, and the branch side hydraulic column is hinged in the hinge groove.
5. The coal mine hydraulic support system according to claim 4, wherein a second hinge seat is fixedly connected to the vertical support guard plate, and one end of the support-side hydraulic column, which is far away from the hinge groove, is hinged to the second hinge seat; the vertical supporting and protecting plate is also provided with a plurality of first water guide holes penetrating through the vertical supporting and protecting plate.
6. The hydraulic support system for coal mines as set forth in claim 1, wherein one end of the arc-shaped support guard plate is connected with a bending plate through a second screw rod, the hydraulic prop is fixedly connected with the bending plate, and wherein the bending plate comprises an inclined section connected with the arc-shaped support guard plate and the hydraulic prop and a horizontal section located between the two hydraulic props.
7. The coal mine hydraulic support system according to claim 6, wherein a connecting plate is arranged below one end of each of the two arc-shaped support plates, which is far away from the inclined section connected with the arc-shaped support plates, two ends of the connecting plate are respectively connected with the two arc-shaped support plates through third screw rods, and an included angle of 90 degrees is formed between each third screw rod and the inner arc surface of each arc-shaped support plate.
8. The coal mine hydraulic support system according to claim 7, wherein the upper plate surface of the connecting plate is provided with an arc-shaped supporting surface, and the two arc-shaped supporting plates are tightly attached to the arc-shaped supporting surface; the connecting plate is provided with an inclined threaded hole for the third screw rod to connect, the inclined threaded hole is internally and further in threaded connection with an installation column located below the third screw rod, and a spring is arranged between the connecting plate and the horizontal section, wherein the upper end of the spring is fixedly connected with the installation column, and the lower end of the spring is fixedly connected with the horizontal section.
9. The hydraulic support system for the coal mine according to claim 6, wherein the lower end of the inclined section is located above the lower end of the arc-shaped support and protection plate, a second water guide hole is formed in the arc-shaped support and protection plate, the upper end face of the second water guide hole is located above the lower end face of the inclined section, and the lower end face of the second water guide hole is located below the lower end face of the inclined section.
10. The hydraulic support system for the coal mine as claimed in claim 9, wherein an inclined surface is arranged at the upper end of the vertical support guard plate close to one side of the paving plate, and the lower end opening of the second water guide hole is positioned right above the inclined surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011639246.5A CN112761695B (en) | 2020-12-31 | 2020-12-31 | Colliery hydraulic support system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011639246.5A CN112761695B (en) | 2020-12-31 | 2020-12-31 | Colliery hydraulic support system |
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| Publication Number | Publication Date |
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| CN112761695A true CN112761695A (en) | 2021-05-07 |
| CN112761695B CN112761695B (en) | 2023-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011639246.5A Active CN112761695B (en) | 2020-12-31 | 2020-12-31 | Colliery hydraulic support system |
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| CN104314596A (en) * | 2014-10-30 | 2015-01-28 | 周文川 | Pneumatic movable support of roadway |
| CN104989436A (en) * | 2015-06-02 | 2015-10-21 | 辽宁工程技术大学 | Energy-absorption type impact-resistant tunnel cross-section hydraulic support |
| CN109826659A (en) * | 2019-02-28 | 2019-05-31 | 中建七局第四建筑有限公司 | A kind of constructing tunnel tunnel arched door support device |
| CN209324382U (en) * | 2018-12-24 | 2019-08-30 | 华东交通大学 | A kind of stable tunnel excavation supporting apparatus |
| CN210370706U (en) * | 2019-07-05 | 2020-04-21 | 珠海格力市政工程有限公司 | Tunnel arch bearing structure |
| CN111734463A (en) * | 2020-06-18 | 2020-10-02 | 辽宁工程技术大学 | Energy-absorbing and impact-preventing combined supporting equipment for arch roadway |
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2020
- 2020-12-31 CN CN202011639246.5A patent/CN112761695B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314596A (en) * | 2014-10-30 | 2015-01-28 | 周文川 | Pneumatic movable support of roadway |
| CN104989436A (en) * | 2015-06-02 | 2015-10-21 | 辽宁工程技术大学 | Energy-absorption type impact-resistant tunnel cross-section hydraulic support |
| CN209324382U (en) * | 2018-12-24 | 2019-08-30 | 华东交通大学 | A kind of stable tunnel excavation supporting apparatus |
| CN109826659A (en) * | 2019-02-28 | 2019-05-31 | 中建七局第四建筑有限公司 | A kind of constructing tunnel tunnel arched door support device |
| CN210370706U (en) * | 2019-07-05 | 2020-04-21 | 珠海格力市政工程有限公司 | Tunnel arch bearing structure |
| CN111734463A (en) * | 2020-06-18 | 2020-10-02 | 辽宁工程技术大学 | Energy-absorbing and impact-preventing combined supporting equipment for arch roadway |
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| CN112761695B (en) | 2023-04-11 |
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Effective date of registration: 20230602 Address after: 443000 shuangchuang Park, Luxun Avenue, Lucheng street, Yidu City, Yichang City, Hubei Province Patentee after: Yichang Yiyue mechanical equipment Co.,Ltd. Address before: 443300 Shilipu village, Lucheng, Yidu City, Yichang City, Hubei Province (Shilipu Industrial Park) Patentee before: YIDU BOSHENG MACHINERY CO.,LTD. |
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