CN215633055U - Temporary support device for roadway excavation - Google Patents
Temporary support device for roadway excavation Download PDFInfo
- Publication number
- CN215633055U CN215633055U CN202120954822.9U CN202120954822U CN215633055U CN 215633055 U CN215633055 U CN 215633055U CN 202120954822 U CN202120954822 U CN 202120954822U CN 215633055 U CN215633055 U CN 215633055U
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- plate
- wall
- sliding
- slide
- supporting plate
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- 238000009412 basement excavation Methods 0.000 title abstract description 12
- 230000008859 change Effects 0.000 claims description 7
- 230000005641 tunneling Effects 0.000 claims description 6
- 230000006978 adaptation Effects 0.000 claims 1
- 230000009471 action Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 12
- 239000011435 rock Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
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Abstract
The utility model discloses a temporary supporting device for roadway excavation, which belongs to the technical field of roadway construction and comprises a supporting plate, a supporting and protecting plate, a sliding groove, a sliding rod, a connecting block, a universal wheel, an inserting rod, a connecting plate, a tension spring and a stretching assembly, wherein the supporting and protecting plate is connected to the side wall of one side of the supporting plate in a sliding manner, and the sliding groove is formed in the supporting plate. When the support device is unfolded, the limiting bolt is firstly rotated to enable the limiting bolt to rotate out of the limiting hole, the limit on the expansion plate is removed, then the support plate is pulled, the position of the support plate is moved under the action of the universal wheel, and the function of unfolding the support device is achieved.
Description
Technical Field
The utility model relates to the technical field of roadway construction, in particular to a temporary supporting device for roadway excavation.
Background
The excavation is the work of excavating wells, roadways and chambers with various shapes, sections or criss-cross in rock strata or mineral layers, the excavation process is divided into a main process and an auxiliary process, the main process is a process for directly completing the process of ensuring the progress of a working face on the working face and a supporting operation in an excavation area of the roadway, the main process is determined by the properties of rocks passing through the roadway, and the auxiliary process is a process for ensuring the normal operation of the main process and is performed simultaneously with the main process in most cases without occupying the excavation cycle time.
The auxiliary process of tunneling comprises a temporary support, and during tunneling in a roadway in soft coal, rock stratum or sand-shifting stratum and a geological broken zone, a forepoling support or other measures must be taken, so that the exposure time of surrounding rocks of a top plate of a working face can be shortened, and the empty roof operation of workers is avoided.
The existing temporary supporting device is generally fixed in shape and size, the height and the width of the supporting device cannot be adjusted, the supporting device needs to be used in a roadway, when the height and the width of the roadway are larger than those of the supporting device, the supporting device can be enabled to support the roadway, and when the height and the width of the roadway are smaller than those of the supporting device, the supporting device can be enabled to enter the roadway, so that the application range of the supporting device is limited, and the practicability of the supporting device is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a temporary supporting device for roadway excavation, which aims to solve the problems that when the height and the width of a roadway are larger than those of the supporting device, the supporting device cannot support the roadway, and when the height and the width of the roadway are smaller than those of the supporting device, the supporting device cannot enter the interior of the roadway, so that the use range of the supporting device is limited, and the practicability of the supporting device is influenced.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a temporary support device that tunnelling was used, it comprises backup pad, backplate, spout, slide bar, connecting block, universal wheel, inserted bar, connecting plate, extension spring and tensile subassembly, one side lateral wall sliding connection of backup pad has a backplate, the spout has been seted up to the inside of backup pad, the inner wall sliding connection of spout has the slide bar, the connecting block is equipped with to the bottom of slide bar, the universal wheel is equipped with admittedly to the lower surface of connecting block, the surface sliding connection of backup pad has the inserted bar, the inserted bar runs through the surface of backup pad and extends to the inside of spout, the one end that the backup pad was kept away from to the inserted bar is equipped with the connecting plate, the surface cover of inserted bar is equipped with the extension spring, one side lateral wall of backup pad is provided with tensile subassembly, the inner wall of connecting block is provided with fixed subassembly.
Preferably, one end of the tension spring is fixedly connected with the supporting plate, the other end of the tension spring is fixedly connected with the connecting plate, and the outer surface of the sliding rod is provided with a jack matched with the inserted link.
Preferably, the stretching assembly comprises an accommodating groove, a telescopic plate, a sliding block, a limiting bolt, a limiting groove, a hinged plate and a limiting block, the accommodating groove is formed in the supporting plate, the telescopic plate is installed on one side wall of the supporting plate, the telescopic plate is connected with the inner wall of the accommodating groove in a sliding mode, the sliding block is fixedly installed on the lower surface of the telescopic plate, the sliding block penetrates through the inner wall of the accommodating groove and extends to the outer side of the supporting plate, the limiting bolt is connected to the lower surface of the supporting plate in a rotating mode, the limiting bolt penetrates through the lower surface of the supporting plate and extends to the inside of the accommodating groove, the limiting groove is formed in one side wall of the supporting plate, the hinged plate is connected to one side wall of the supporting plate in a rotating mode through a rotating shaft, and the limiting block is connected to one side wall of the hinged plate in a rotating mode.
Preferably, the lower surface of the expansion plate is provided with a limiting hole matched with the limiting bolt, and the limiting bolt is connected with the inner wall of the limiting hole in a sliding manner.
Preferably, the shape of the limiting block is matched with that of the limiting groove, and the limiting block is connected with the inner wall of the limiting groove in a sliding mode.
Preferably, fixed subassembly includes standing groove, slide, threaded rod, staple and change, the standing groove has been seted up to the inside of connecting block, the inner wall sliding connection of standing groove has the slide, the upper surface sliding connection of slide has the threaded rod, the threaded rod runs through the upper surface of slide and extends to the lower surface of slide, the staple is equipped with to the bottom of threaded rod, the surface cover of threaded rod is equipped with the change.
Preferably, the inner wall of the rotating ring is provided with a thread groove matched with the threaded rod, and the rotating ring is rotatably connected with the upper surface of the sliding plate.
Compared with the prior art, the utility model has the beneficial effects that:
(1) before the expansion of the utility model, the limit bolt is positioned in the limit hole to limit the expansion plate, so that the expansion plate can not slide, when the expansion joint is expanded, the limit bolt is rotated to rotate out of the limit hole, the limit on the expansion plate is released, then the support plate is pulled, under the action of the universal wheel, the position of the support plate moves, and simultaneously the expansion plate is driven to slide in the accommodating groove, so that the slide block slides, the expansion plate is limited, so that the expansion plate can not completely slide out of the accommodating groove, when the support plate contacts the inner wall of the roadway, the pulling is stopped, then the limit bolt is rotated reversely, so that the limit bolt rotates into the limit hole to limit the expansion plate, so that the expansion plate can not continuously slide, then the hinged plate is rotated, so that the hinged plate rotates on the side of the supporting plate through the rotating shaft, then the limiting block is rotated to align the limiting block with the limiting groove, then the limiting block is slid into the limiting groove, the hinged plate supports the supporting plate to complete stretching, then the connecting plate is pulled to drive the inserted rod to slide out of the inner part of the jack to stretch and deform the tension spring, then the supporting plate is lifted upwards to drive the supporting plate to move upwards to drive the sliding rod to slide out of the sliding groove, when the supporting plate contacts the top end of the roadway, the lifting is stopped, then the connecting plate is loosened, the tension spring is restored, the connecting plate is pulled to move towards the direction of the supporting plate, the connecting plate drives the inserted rod to slide towards the inner part of the jack, when the inserted rod is positioned in the inner part of the jack, the supporting plate is limited, so that the supporting plate cannot be lifted continuously to complete unfolding, the whole supporting device plays a role in unfolding, and when the supporting device is actually used, a worker can adjust the height and the width of the supporting device according to the height and the width of the roadway, the condition that the supporting device can not support the roadway or can not enter the roadway is prevented from occurring, so that the supporting device can be matched with the roadway with different heights and widths, and the practicability of the supporting device is improved.
(2) When fixing strutting arrangement, the pulling slide, make the slide outwards slide from the inside of connecting block along the inner wall of standing groove, when sliding suitable length, stop the pulling slide, rotate the change after that, make the change rotate at the upper surface of slide, make the threaded rod slide downwards at the inner wall of change, drive the staple and slide downwards simultaneously, after the staple inserts ground, fix strutting arrangement, above that the whole function of fixing strutting arrangement's position through the staple that has played, the holistic stability of strutting arrangement has been promoted, the personal safety of staff when carrying out the operation has been ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic perspective view of a temporary support device for roadway excavation according to the present invention;
fig. 2 is a schematic sectional view of a temporary support device for roadway excavation according to the present invention;
fig. 3 is an enlarged view of a portion a in fig. 2, which shows a temporary support device for tunneling according to the present invention;
fig. 4 is an exploded view of a temporary support device for roadway excavation according to the present invention;
fig. 5 is a schematic partial structural view of a temporary support device for tunneling according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1-supporting plate, 2-supporting plate, 3-sliding groove, 4-sliding rod, 5-connecting block, 6-universal wheel, 7-inserted rod, 8-connecting plate, 9-tension spring, 10-accommodating groove, 11-expansion plate, 12-sliding block, 13-limiting bolt, 14-limiting groove, 15-hinged plate, 16-limiting block, 17-placing groove, 18-sliding plate, 19-threaded rod, 20-fixing nail and 21-rotating ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a temporary supporting device for tunneling comprises a supporting plate 1, a supporting plate 2, a sliding chute 3, a sliding rod 4, a connecting block 5, a universal wheel 6, an inserted link 7, a connecting plate 8, a tension spring 9 and a stretching assembly, wherein the supporting plate 2 is connected with the side wall of one side of the supporting plate 1 in a sliding way, the sliding chute 3 is arranged in the supporting plate 1, the sliding chute 4 is connected with the inner wall of the sliding chute 3 in a sliding way, the connecting block 5 is arranged at the bottom end of the sliding rod 4, the universal wheel 6 is fixedly arranged on the lower surface of the connecting block 5, the inserted link 7 is connected with the outer surface of the supporting plate 1 in a sliding way, the inserted link 7 penetrates through the outer surface of the supporting plate 1 and extends into the sliding chute 3, the connecting plate 8 is arranged at one end of the inserted link 7, the tension spring 9 is sleeved on the outer surface of the inserted link 7, one end of the tension spring 9 is fixedly connected with the supporting plate 1, the other end of the tension spring 9 is fixedly connected with the connecting plate 8, the outer surface of the sliding rod 4 is provided with an insertion hole matched with the inserted link 7, a stretching component is arranged on the side wall of one side of the supporting plate 1, a fixing component is arranged on the inner wall of the connecting block 5, the stretching component comprises an accommodating groove 10, a telescopic plate 11, a sliding block 12, a limiting bolt 13, a limiting groove 14, a hinged plate 15 and a limiting block 16, the accommodating groove 10 is arranged in the supporting plate 2, the telescopic plate 11 is arranged on the side wall of one side of the supporting plate 1, the telescopic plate 11 is connected with the inner wall of the accommodating groove 10 in a sliding manner, the sliding block 12 is fixedly arranged on the lower surface of the telescopic plate 11, the sliding block 12 penetrates through the inner wall of the accommodating groove 10 and extends to the outer side of the supporting plate 2, the lower surface of the supporting plate 2 is rotatably connected with the limiting bolt 13, the limiting bolt 13 penetrates through the lower surface of the supporting plate 2 and extends to the inside of the accommodating groove 10, the lower surface of the telescopic plate 11 is provided with a limiting hole matched with the limiting bolt 13, the limiting bolt 13 is connected with the inner wall of the limiting hole in a sliding manner, the side wall of one side of the supporting plate 1 is provided with the limiting groove 14, a hinged plate 15 is rotatably connected to one side wall of the supporting plate 2 through a rotating shaft, a limiting block 16 is rotatably connected to one side wall of the hinged plate 15, the shape of the limiting block 16 is matched with that of the limiting groove 14, and the limiting block 16 is slidably connected with the inner wall of the limiting groove 14.
Before the expansion of the utility model, the limit bolt 13 is positioned in the limit hole to limit the expansion plate 11, so that the expansion plate 11 can not slide, when the expansion of the utility model is carried out, the limit bolt 13 is firstly rotated to enable the limit bolt 13 to rotate out of the limit hole, the limit on the expansion plate 11 is removed, then the support plate 1 is pulled, under the action of the universal wheels 6, the position of the support plate 1 is moved, meanwhile, the expansion plate 11 is driven to slide in the accommodating groove 10, so that the slide block 12 slides, the expansion plate 11 is limited, so that the expansion plate 11 can not completely slide out of the accommodating groove 10, when the support plate 1 contacts the inner wall of the roadway, the pulling is stopped, then the limit bolt 13 is reversely rotated to rotate into the limit hole to limit the expansion plate 11, so that the expansion plate 11 can not slide continuously, and then the hinged plate 15 is rotated, the hinged plate 15 rotates on the side wall of the supporting plate 2 through the rotating shaft, then the limiting block 16 rotates, the limiting block 16 is aligned with the limiting groove 14, then the limiting block 16 slides into the limiting groove 14, the hinged plate 15 supports the supporting plate 2 to complete stretching, then the connecting plate 8 is pulled to drive the inserted rod 7 to slide out of the inner part of the jack, the tension spring 9 is stretched and deformed, then the supporting plate 1 is lifted upwards to drive the supporting plate 2 to move upwards, the sliding rod 4 slides out of the sliding groove 3, when the supporting plate 2 contacts the top end of the roadway, the lifting is stopped, then the connecting plate 8 is loosened, the tension spring 9 is restored, the connecting plate 8 is pulled to move towards the direction of the supporting plate 1, the connecting plate 8 drives the inserted rod 7 to slide towards the inner part of the jack, when the inserted rod 7 is positioned in the inner part of the jack, the supporting plate 1 is limited, and the supporting plate 1 can not be lifted continuously, accomplish the expansion, above whole played carry out the function that expandes to supporting device, during the in-service use, the staff can adjust supporting device's height and width according to the height and the width in tunnel, prevent that supporting device can't support the tunnel or can't get into the condition in tunnel and take place to make supporting device can with the not tunnel phase-match of co-altitude and width, promoted supporting device's practicality.
Referring to fig. 1-5, the fixing assembly includes a placement groove 17, a sliding plate 18, a threaded rod 19, a fixing nail 20 and a rotary ring 21, the placement groove 17 is formed inside the connecting block 5, the sliding plate 18 is slidably connected to the inner wall of the placement groove 17, the threaded rod 19 is slidably connected to the upper surface of the sliding plate 18, the threaded rod 19 penetrates through the upper surface of the sliding plate 18 and extends to the lower surface of the sliding plate 18, the fixing nail 20 is mounted at the bottom end of the threaded rod 19, the rotary ring 21 is sleeved on the outer surface of the threaded rod 19, the threaded groove matched with the threaded rod 19 is formed in the inner wall of the rotary ring 21, and the rotary ring 21 is rotatably connected with the upper surface of the sliding plate 18.
Wherein, when fixing the supporting device, pulling slide 18, make slide 18 outwards slide from the inside of connecting block 5 along the inner wall of standing groove 17, when sliding to suitable length, stop pulling slide 18, rotate swivel 21 after that, make swivel 21 rotate at slide 18's upper surface, make threaded rod 19 slide downwards at swivel 21's inner wall, drive staple 20 and slide downwards simultaneously, insert ground back when staple 20, fix the supporting device, above the whole function of fixing the position of supporting device through staple 20 has been played, the holistic stability of supporting device has been promoted, the personal safety of staff when carrying out the operation has been ensured.
The overall working principle is as follows: before the expansion of the utility model, the limit bolt 13 is positioned in the limit hole to limit the expansion plate 11, so that the expansion plate 11 can not slide, when the expansion of the utility model is carried out, the limit bolt 13 is rotated to rotate the limit bolt 13 out of the limit hole, the limit on the expansion plate 11 is released, then the support plate 1 is pulled, under the action of the universal wheel 6, the position of the support plate 1 is moved, meanwhile, the expansion plate 11 is driven to slide in the accommodating groove 10, so that the slide block 12 slides, the expansion plate 11 is limited, so that the expansion plate 11 can not completely slide out of the accommodating groove 10, when the support plate 1 contacts the inner wall of the roadway, the pulling is stopped, then the limit bolt 13 is rotated in reverse direction, so that the limit bolt 13 rotates into the limit hole, the expansion plate 11 is limited, so that the expansion plate 11 can not slide continuously, and then the hinged plate 15 is rotated, the hinged plate 15 rotates on the side wall of the supporting plate 2 through the rotating shaft, then the limiting block 16 rotates, the limiting block 16 is aligned with the limiting groove 14, then the limiting block 16 slides into the limiting groove 14, the hinged plate 15 supports the supporting plate 2 to complete stretching, then the connecting plate 8 is pulled to drive the inserted rod 7 to slide out of the inner part of the jack, the tension spring 9 is stretched and deformed, then the supporting plate 1 is lifted upwards to drive the supporting plate 2 to move upwards, the sliding rod 4 slides out of the sliding groove 3, when the supporting plate 2 contacts the top end of the roadway, the lifting is stopped, then the connecting plate 8 is loosened, the tension spring 9 is restored, the connecting plate 8 is pulled to move towards the direction of the supporting plate 1, the connecting plate 8 drives the inserted rod 7 to slide towards the inner part of the jack, when the inserted rod 7 is positioned in the inner part of the jack, the supporting plate 1 is limited, and the supporting plate 1 can not be lifted continuously, when the spreading is completed and the support device is fixed, the sliding plate 18 is pulled so that the sliding plate 18 slides outwards along the inner wall of the placing groove 17 from the inside of the connecting block 5, when the sliding plate slides to a proper length, the sliding plate 18 stops being pulled, then the rotating ring 21 is rotated so that the rotating ring 21 rotates on the upper surface of the sliding plate 18, the threaded rod 19 slides downwards on the inner wall of the rotating ring 21, the fixing nail 20 is driven to slide downwards, and after the fixing nail 20 is inserted into the ground, the support device is fixed.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.
Claims (7)
1. The utility model provides a temporary support device of tunnelling usefulness, it comprises backup pad (1), supporting plate (2), spout (3), slide bar (4), connecting block (5), universal wheel (6), inserted bar (7), connecting plate (8), extension spring (9) and tensile subassembly, its characterized in that: one side lateral wall sliding connection of backup pad (1) has a backplate (2), spout (3) have been seted up to the inside of backup pad (1), the inner wall sliding connection of spout (3) has slide bar (4), connecting block (5) are equipped with to the bottom of slide bar (4), universal wheel (6) are equipped with admittedly to the lower surface of connecting block (5), the surface sliding connection of backup pad (1) has inserted bar (7), inserted bar (7) run through the surface of backup pad (1) and extend to the inside of spout (3), connecting plate (8) are equipped with to the one end that backup pad (1) was kept away from in inserted bar (7), the surface cover of inserted bar (7) is equipped with extension spring (9), one side lateral wall of backup pad (1) is provided with tensile component, the inner wall of connecting block (5) is provided with fixed subassembly.
2. A temporary support device for tunnel boring according to claim 1, wherein: one end of the tension spring (9) is fixedly connected with the support plate (1), the other end of the tension spring (9) is fixedly connected with the connecting plate (8), and the outer surface of the sliding rod (4) is provided with a jack matched with the inserted rod (7).
3. A temporary support device for tunnel boring according to claim 1, wherein: the stretching assembly comprises an accommodating groove (10), a telescopic plate (11), a sliding block (12), a limiting bolt (13), a limiting groove (14), a hinged plate (15) and a limiting block (16), the accommodating groove (10) is formed in the supporting plate (2), the telescopic plate (11) is installed on the side wall of one side of the supporting plate (1), the telescopic plate (11) is connected with the inner wall of the accommodating groove (10) in a sliding mode, the sliding block (12) is fixedly installed on the lower surface of the telescopic plate (11), the sliding block (12) penetrates through the inner wall of the accommodating groove (10) and extends to the outer side of the supporting plate (2), the limiting bolt (13) is rotatably connected to the lower surface of the supporting plate (2), the limiting bolt (13) penetrates through the lower surface of the supporting plate (2) and extends to the inside of the accommodating groove (10), the limiting groove (14) is formed in the side wall of one side of the supporting plate (1), the side wall of one side of the supporting plate (2) is rotatably connected with a hinged plate (15) through a rotating shaft, and the side wall of one side of the hinged plate (15) is rotatably connected with a limiting block (16).
4. A temporary support device for use in tunnelling according to claim 3, in which: the lower surface of the expansion plate (11) is provided with a limiting hole matched with the limiting bolt (13), and the limiting bolt (13) is connected with the inner wall of the limiting hole in a sliding mode.
5. A temporary support device for use in tunnelling according to claim 3, in which: the shape of stopper (16) and the shape looks adaptation of spacing groove (14), stopper (16) and the inner wall sliding connection of spacing groove (14).
6. A temporary support device for tunnel boring according to claim 1, wherein: fixed subassembly includes standing groove (17), slide (18), threaded rod (19), staple (20) and change (21), standing groove (17) have been seted up to the inside of connecting block (5), the inner wall sliding connection of standing groove (17) has slide (18), the last surface sliding connection of slide (18) has threaded rod (19), threaded rod (19) run through the upper surface of slide (18) and extend to the lower surface of slide (18), staple (20) are equipped with to the bottom of threaded rod (19), the surface cover of threaded rod (19) is equipped with change (21).
7. The temporary support device for tunneling according to claim 6, characterized in that: the inner wall of the rotary ring (21) is provided with a thread groove matched with the threaded rod (19), and the rotary ring (21) is rotatably connected with the upper surface of the sliding plate (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120954822.9U CN215633055U (en) | 2021-05-07 | 2021-05-07 | Temporary support device for roadway excavation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120954822.9U CN215633055U (en) | 2021-05-07 | 2021-05-07 | Temporary support device for roadway excavation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215633055U true CN215633055U (en) | 2022-01-25 |
Family
ID=79937597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120954822.9U Expired - Fee Related CN215633055U (en) | 2021-05-07 | 2021-05-07 | Temporary support device for roadway excavation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215633055U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776354A (en) * | 2022-06-20 | 2022-07-22 | 徐州华超矿山设备有限公司 | Mine ore mining supporting platform |
| CN114837709A (en) * | 2022-05-13 | 2022-08-02 | 河南理工大学 | Supporting construction of soft coal seam tunnel section |
-
2021
- 2021-05-07 CN CN202120954822.9U patent/CN215633055U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114837709A (en) * | 2022-05-13 | 2022-08-02 | 河南理工大学 | Supporting construction of soft coal seam tunnel section |
| CN114837709B (en) * | 2022-05-13 | 2023-03-10 | 河南理工大学 | Supporting construction of soft coal seam tunnel section |
| CN114776354A (en) * | 2022-06-20 | 2022-07-22 | 徐州华超矿山设备有限公司 | Mine ore mining supporting platform |
| CN114776354B (en) * | 2022-06-20 | 2022-08-26 | 徐州华超矿山设备有限公司 | Mine ore mining supporting platform |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220125 |