CN113153400A - Fully-mechanized underground protection support frame - Google Patents
Fully-mechanized underground protection support frame Download PDFInfo
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- CN113153400A CN113153400A CN202110433130.4A CN202110433130A CN113153400A CN 113153400 A CN113153400 A CN 113153400A CN 202110433130 A CN202110433130 A CN 202110433130A CN 113153400 A CN113153400 A CN 113153400A
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- rod
- support
- hydraulic telescopic
- servo motor
- gear
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- 230000007246 mechanism Effects 0.000 claims abstract description 64
- 238000005065 mining Methods 0.000 claims abstract description 23
- 230000001681 protective effect Effects 0.000 claims abstract description 9
- 230000002457 bidirectional effect Effects 0.000 claims description 12
- 239000003245 coal Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 6
- 230000003028 elevating effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- 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
- E21D23/0056—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor with individual advancing shifting devices
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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 OR ROCK 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
- E21D23/0409—Aligning or guiding means for the supports or for the constitutive parts of the supports
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
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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)
- Architecture (AREA)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a fully mechanized underground protection support frame, which relates to the field of coal mining protection, and comprises a working face and is characterized in that: the supporting mechanism is arranged on a working surface and is used for supporting the top wall and the side wall of the protective fully mechanized mining well; the lifting mechanism is arranged at the bottom end of the working face and used for adjusting and supporting the fully mechanized mining wells with different heights, the protection and support effect is good, the stability of the device is high, and the safety of workers and equipment can be well guaranteed.
Description
Technical Field
The invention relates to the field of coal mining protection, in particular to a fully mechanized underground protection support frame.
Background
The comprehensive mining is a short term of comprehensive mechanized coal mining of coal mines, generally refers to a mining mode with a mechanization rate of more than 95 percent, relates to underground coal mining, and is suitable for mining of medium-thickness coal seams and thick coal seams by a layered longwall method, wherein the coal seams are stable, the top plate of the coal seams is hard, and the coal seams have no fault and are slowly inclined.
The underground protection support is needed in the process of carrying out work in the fully mechanized mining, the safety and the stability of a mine shaft of the fully mechanized mining well are guaranteed, the safety of workers and equipment are guaranteed, the protection effect of the existing protection support frame is poor when the protection support frame is used for carrying out support work, and the safety of the workers and the equipment cannot be well guaranteed.
Disclosure of Invention
The invention aims to provide a fully-mechanized underground protection support frame, which aims to solve the problems that the prior art is poor in protection effect and cannot well ensure the safety of workers and equipment.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a combine and adopt protection support frame in pit, includes the working face, still includes:
the supporting mechanism is arranged on a working surface and is used for supporting the top wall and the side wall of the protective fully mechanized mining well;
and the lifting mechanism is arranged at the bottom end of the working face and is used for adjusting and supporting the fully mechanized mining wells with different heights.
On the basis of the technical scheme, the invention also provides the following optional technical scheme:
the further technical scheme is as follows: the lifting mechanism is arranged on two sides of the working face and comprises a supporting cylinder and a supporting rod, the supporting rod is connected with the inner wall of the supporting cylinder in a sliding mode, a bottom plate is arranged at the bottom end of the supporting cylinder, a first driving mechanism is arranged on the bottom plate and connected with the supporting rod, and limiting mechanisms are symmetrically arranged on two sides, close to the top end, of the supporting cylinder.
The further technical scheme is as follows: first actuating mechanism includes two-way servo motor and one-way threaded rod, two output of two-way servo motor all are provided with the rotation axis, the one end that two-way servo motor was kept away from to the rotation axis is provided with first bevel gear, the rotation axis rotates with a support section of thick bamboo to be connected, one-way threaded rod rotates through the bearing with supporting between the section of thick bamboo to be connected, one-way threaded rod one end is connected with bracing piece screw fit, and the one end that the bracing piece was kept away from to one-way threaded rod is provided with second bevel gear, first bevel gear is connected with second bevel gear meshing.
The further technical scheme is as follows: the limiting mechanism comprises a limiting groove, a limiting rod and a fixing box, the limiting groove is formed in the side wall of the supporting rod, a through hole is formed in the side wall of the supporting cylinder, the fixing box is arranged opposite to the through hole, an L-shaped rod is arranged in the fixing box, a sliding groove is formed in the fixing box, the L-shaped rod is connected with the sliding groove in a sliding mode, the L-shaped rod is fixedly connected with the limiting rod, and a second driving mechanism is arranged between the L-shaped rod and the side wall of the supporting cylinder.
The further technical scheme is as follows: the second driving mechanism comprises a first servo motor and a rack, a fixing plate is arranged on the side wall of the supporting cylinder, the first servo motor is fixed on the fixing plate, a gear is arranged at the output end of the first servo motor, the rack is arranged on the L-shaped rod, and the gear is meshed with the rack.
The further technical scheme is as follows: the utility model discloses a hydraulic telescopic device, including the elevating system, top supporting mechanism, first hydraulic telescoping rod, hydraulic telescopic cylinder and second hydraulic telescopic rod, elevating system's one end is kept away from at the working face to the top supporting mechanism setting, top supporting mechanism includes first hydraulic telescopic rod, hydraulic telescopic cylinder and second hydraulic telescopic rod, first hydraulic telescopic rod's one end is provided with third actuating mechanism, be provided with worker's type groove on the working face, third actuating mechanism sets up at worker's inslot, and first hydraulic telescopic rod's the other end articulates and is provided with first side shield, the one end of second hydraulic telescopic rod is articulated with the one end of bracing piece, and the other end of second hydraulic telescopic rod articulates and is provided with second side shield hydraulic telescopic cylinder sets up on the working face, the one end of first side shield and the one end of second side shield all rotate with the working face.
The further technical scheme is as follows: third actuating mechanism includes servo motor, two-way threaded rod and rotation axis, two-way threaded rod rotates respectively to be connected and sets up on the both sides inner wall in worker's type groove, the rotation axis rotates with worker's type groove and is connected, servo motor's output and one end fixed connection of one of them two-way threaded rod, all be provided with meshing mechanism, two between the both ends of rotation axis and two-way threaded rod equal symmetry is provided with the threaded sleeve that the screw fit is connected on the two-way threaded rod, threaded sleeve is articulated with first hydraulic telescoping rod.
The further technical scheme is as follows: the meshing mechanism comprises a first gear, the first gear is fixed on the bidirectional threaded rod, a second gear is arranged at the end of the rotating shaft, and the first gear is meshed with the second gear.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the two-way servo motor drives the first bevel gear and the second bevel gear to perform meshing motion, so that the support rod is driven to move upwards, and the protection mechanism on the working surface is lifted to a proper position, so that the protection support can be conveniently performed on the shafts with different heights, and the applicability of the device is increased.
According to the invention, the gear and the rack on the L-shaped plate are driven to perform meshing motion by the arranged first servo motor, so that the limiting rod is driven to enter the limiting hole through the through hole, the supporting rod is fixed, and the whole device is more stable during supporting and protecting.
According to the invention, the threaded sleeve on the bidirectional threaded rod is driven to relatively move by the arranged second servo motor, so that the first side baffle plate is tightly attached to the top end side wall of the well, the top protection plate is driven to move upwards by the hydraulic telescopic cylinder and is tightly attached to the top end wall of the well, and meanwhile, the second electric telescopic rod is started to drive the second side baffle plate to be tightly attached to the side wall of the well, so that the protection effect is better when the device is in protection support.
The invention can conveniently protect the hoistways with different heights and the like, and has good protection and support effects, high stability and strong practicability.
Drawings
Fig. 1 is a schematic structural diagram of the fully mechanized mining underground protective support frame.
Fig. 2 is a schematic perspective view of the working surface of the present invention.
Fig. 3 is a schematic view of the inner structure of the working surface of the present invention.
Fig. 4 is a schematic structural view of the lifting mechanism of the present invention.
Fig. 5 is an enlarged schematic view of the structure at a in the present invention.
Notations for reference numerals: the device comprises a bottom plate 1, a support cylinder 2, a support rod 3, a bidirectional servo motor 4, a rotating shaft 5, a first bevel gear 6, a second bevel gear 7, a one-way threaded rod 8, a limiting hole 9, a through hole 10, a limiting rod 11, a first servo motor 12, a fixing plate 13, a gear 14, a fixing box 15, a sliding groove 16, an L-shaped rod 17, a rack 18, a working surface 19, a I-shaped groove 20, a second servo motor 21, a bidirectional threaded rod 22, a third bevel gear 23, a fourth bevel gear 24, a rotating shaft 25, an inserted link 26, a threaded sleeve 27, a first hydraulic telescopic rod 28, a first side baffle 29, a hydraulic telescopic cylinder 30, a top protection plate 31, a second side baffle 32, a second hydraulic telescopic rod 33, a needle plate 34 and a spring 35.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
In the embodiment of the invention, the fully mechanized underground protective support frame comprises a working surface 19, and further comprises:
the supporting mechanism is arranged on the working surface 19 and is used for supporting the top wall and the side wall of the protective fully mechanized mining well;
and the lifting mechanism is arranged at the bottom end of the working surface 19 and is used for adjusting and supporting the fully mechanized mining wells with different heights.
Can protect the well of co-altitude etc. through setting up elevating system, the supporting mechanism protection support effect through setting up is good, and the stability of device is high, and the practicality is strong.
As an embodiment, please refer to fig. 1 and 4, the lifting mechanism is disposed on two sides of the working surface 19, the lifting mechanism includes a supporting cylinder 2 and a supporting rod 3, the supporting rod 3 is slidably connected to an inner wall of the supporting cylinder 2, a bottom plate 1 is disposed at a bottom end of the supporting cylinder 3, a first driving mechanism is disposed on the bottom plate 1, the first driving mechanism is connected to the supporting rod 3, the supporting cylinder 2 is symmetrically disposed on two sides near a top end, and when the lifting is required, the first driving mechanism drives the one-way threaded rod 8 to rotate, so as to drive the supporting rod 3 to move upward or downward relative to the supporting cylinder 2, thereby achieving the lifting of the top supporting mechanism, and the lifting stability is high.
As an embodiment, please refer to fig. 1, the first driving mechanism includes a bidirectional servo motor 4 and a one-way threaded rod 8, two output ends of the bidirectional servo motor 4 are respectively provided with a rotating shaft 5, one end of the rotating shaft 5, which is far away from the bidirectional servo motor 4, is provided with a first bevel gear 6, the rotating shaft 5 is rotatably connected with the support cylinder 2, the one-way threaded rod 8 is rotatably connected with the support cylinder 3 through a bearing, one end of the one-way threaded rod 8 is spirally matched and connected with the support rod 3, one end of the one-way threaded rod 8, which is far away from the support rod 3, is provided with a second bevel gear 7, and the first bevel gear 6 is meshed and connected with the second bevel gear 7, which is beneficial to the stability of the whole device in the lifting process.
As an embodiment, please refer to fig. 5, the limiting mechanism includes a plurality of limiting grooves 9, a limiting rod 11 and a fixing box 15, the limiting grooves 9 are disposed on a side wall of the supporting rod 3, a through hole 10 is disposed on a side wall of the supporting cylinder 3, the fixing box 15 is disposed opposite to the through hole 10, an L-shaped rod 17 is disposed in the fixing box 15, a sliding groove 16 is disposed on the fixing box 15, the L-shaped rod 17 is slidably connected to the sliding groove 16, the L-shaped rod 17 is fixedly connected to the limiting rod 11, a second driving mechanism is disposed between the L-shaped rod 17 and the side wall of the supporting cylinder 3, and the second driving mechanism may be an electric telescopic rod, an air cylinder, a hydraulic push rod, and the like.
As an embodiment, please refer to fig. 5, the second driving mechanism includes a first servo motor 12 and a rack 18, a fixing plate 13 is disposed on a side wall of the support cylinder 3, the first servo motor 12 is fixed on the fixing plate 13, a gear 14 is disposed at an output end of the first servo motor 12, the rack 18 is disposed on an L-shaped rod 17, the gear 14 is engaged with the rack 18, and the first servo motor 12 drives the gear 14 and the rack 18 to perform an engaging motion, so as to drive the limit rod 11 to limit the support rod 3.
As an embodiment, referring to fig. 1, the top supporting mechanism is disposed at one end of the working surface 19 far from the lifting mechanism, the top supporting mechanism includes a first hydraulic telescopic rod 28, a hydraulic telescopic cylinder 30 and a second hydraulic telescopic rod 33, one end of the first hydraulic telescopic rod 28 is provided with a third driving mechanism, the working surface 19 is provided with an i-shaped groove 20, the third driving mechanism is disposed in the i-shaped groove 20, the other end of the first hydraulic telescopic rod 28 is hinged to a first side baffle 29, one end of the second hydraulic telescopic rod 33 is hinged to one end of the supporting rod 3, the other end of the second hydraulic telescopic rod 33 is hinged to a second side baffle 32, the hydraulic telescopic cylinder 30 is disposed on the working surface 19, one end of the first side baffle 29 and one end of the second side baffle 32 are both rotatably connected to the working surface 19, the top end of the hydraulic telescopic cylinder 30 is provided with a top protection plate 31, the hydraulic telescoping cylinder 30 drives the top protection plate 31 to realize the support to the well top wall, and the first hydraulic telescoping rod 28 drives the first side baffle 29 to hug closely the well lateral wall, and the second hydraulic telescoping rod 28 drives the second side baffle 32 to also hug closely the lateral wall of well simultaneously, realizes the support protection to the well.
As an embodiment, please refer to fig. 3, the third driving mechanism includes a servo motor 21, two-way threaded rods 22 and a rotating shaft 25, the two-way threaded rods 22 are respectively rotatably connected to the inner walls of the two sides of the tool-shaped groove 20, the rotating shaft 25 is rotatably connected to the tool-shaped groove 20, the output end of the servo motor 21 is fixedly connected to one end of one of the two-way threaded rods 22, engaging mechanisms are respectively disposed between the two ends of the rotating shaft 25 and the two-way threaded rods 22, threaded sleeves 27 connected in a spiral fit manner are symmetrically disposed on the two-way threaded rods 22, the threaded sleeves 27 are hinged to the first hydraulic telescopic rod 28, and the third driving mechanism simultaneously drives the two first side baffles 29 to simultaneously rotate outward, which is convenient to use.
Referring to fig. 3, as an embodiment, the meshing mechanism includes a first gear 23, the first gear 23 is fixed on the bidirectional threaded rod 22, a second gear 24 is disposed at an end of the rotating shaft 25, and the first gear 23 and the second gear 24 are in meshing connection.
As an embodiment, referring to fig. 1, a plurality of insertion rods 26 are disposed at the top end of the base plate 1, and the insertion rods 26 are disposed to further enhance the stability of the device, so that the device is stabilized better.
The working principle of the invention is as follows: when the fully mechanized coal mining underground protection support is used, the device is moved to a position needing to be supported and protected, then a plurality of inserted rods 26 are inserted into the ground, the stability of the device is increased, then the two-way servo motor is started, the rotating shaft 5 drives the first bevel gear 6 and the second bevel gear 7 to perform meshing motion, further the supporting rod 3 is driven to move upwards relative to the supporting barrel 2, the protection mechanism on the working face is pushed to a proper position, then the first servo motor 12 is started to drive the gear 14 and the rack 18 on the L-shaped rod 17 to perform meshing motion, further the limiting rod 11 is driven to enter the limiting hole 9 through the through hole 10, the height fixation is realized, the stability of the device is increased, then the second servo motor 21 is started to drive the two-way threaded rods 22 to rotate, so that the threaded sleeves 27 on the two-way threaded rods 22 perform relative motion, and simultaneously the first hydraulic telescopic rod 28 is started to drive the first side baffle 29 to rotate outwards, then, the second hydraulic telescopic rod 33 is started again to drive the second side baffle 32 to cling to the side wall of the well, and meanwhile, the hydraulic telescopic cylinder 30 is started to drive the top protection plate 31 to realize protection support for the top end and the side wall of the well.
The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present disclosure, and all the changes or substitutions should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (8)
1. The utility model provides a combine and adopt protection support frame in pit, includes working face (19), its characterized in that still includes:
the supporting mechanism is arranged on a working surface (19) and is used for supporting the top wall and the side wall of the protective fully mechanized mining well;
the lifting mechanism is arranged at the bottom end of the working face (19) and used for adjusting and supporting the fully mechanized mining wells with different heights.
2. The fully mechanized mining downhole protection support frame according to claim 1, wherein the lifting mechanism is arranged on both sides of a working surface (19), the lifting mechanism comprises a support cylinder (2) and a support rod (3), the support rod (3) is slidably connected with the inner wall of the support cylinder (2), a bottom plate (1) is arranged at the bottom end of the support cylinder (3), a first driving mechanism is arranged on the bottom plate (1), the first driving mechanism is connected with the support rod (3), and limiting mechanisms are symmetrically arranged on both sides of the support cylinder (2) close to the top end.
3. The fully-mechanized underground protective support frame according to claim 2, wherein the first driving mechanism comprises a bidirectional servo motor (4) and a one-way threaded rod (8), two output ends of the bidirectional servo motor (4) are respectively provided with a rotating shaft (5), one end of the rotating shaft (5) far away from the bidirectional servo motor (4) is provided with a first bevel gear (6), the rotating shaft (5) is rotatably connected with the support cylinder (2), the one-way threaded rod (8) is rotatably connected with the support cylinder (3) through a bearing, one end of the one-way threaded rod (8) is spirally matched and connected with the support rod (3), one end of the one-way threaded rod (8) far away from the support rod (3) is provided with a second bevel gear (7), and the first bevel gear (6) is meshed and connected with the second bevel gear (7).
4. The fully-mechanized underground protective support frame according to claim 2, wherein the limiting mechanism comprises a plurality of limiting grooves (9), a plurality of limiting rods (11) and a fixing box (15), the limiting grooves (9) are arranged on the side wall of the support rod (3), a through hole (10) is formed in the side wall of the support cylinder (3), the fixing box (15) is arranged opposite to the through hole (10), an L-shaped rod (17) is arranged in the fixing box (15), a sliding groove (16) is formed in the fixing box (15), the L-shaped rod (17) is connected with the sliding groove (16) in a sliding mode, the L-shaped rod (17) is fixedly connected with the limiting rods (11), and a second driving mechanism is arranged between the L-shaped rod (17) and the side wall of the support cylinder (3).
5. The fully mechanized mining downhole protection support frame according to claim 4, wherein the second driving mechanism comprises a first servo motor (12) and a rack (18), a fixing plate (13) is arranged on the side wall of the support cylinder (3), the first servo motor (12) is fixed on the fixing plate (13), a gear (14) is arranged at the output end of the first servo motor (12), the rack (18) is arranged on an L-shaped rod (17), and the gear (14) is in meshed connection with the rack (18).
6. The fully-mechanized underground protective support frame according to claim 1, characterized in that a top support mechanism is arranged at one end of the working surface (19) far away from the lifting mechanism, the top support mechanism comprises a first hydraulic telescopic rod (28), a hydraulic telescopic cylinder (30) and a second hydraulic telescopic rod (33), a third driving mechanism is arranged at one end of the first hydraulic telescopic rod (28), an I-shaped groove (20) is arranged on the working surface (19), the third driving mechanism is arranged in the I-shaped groove (20), a first side baffle (29) is hinged at the other end of the first hydraulic telescopic rod (28), one end of the second hydraulic telescopic rod (33) is hinged with one end of the support rod (3), a second side baffle (32) is hinged at the other end of the second hydraulic telescopic rod (33), and the hydraulic telescopic cylinder (30) is arranged on the working surface (19), the top of hydraulic telescoping cylinder (30) is provided with top guard plate (31), the one end of first side shield (29) and the one end of second side shield (32) all rotate with working face (19) and are connected, and the top of hydraulic telescoping cylinder (30) is provided with top guard plate (31).
7. The fully-mechanized underground mining protection support frame according to claim 6, wherein the third driving mechanism comprises a servo motor (21), two-way threaded rods (22) and a rotating shaft (25), the two-way threaded rods (22) are respectively and rotatably connected to the inner walls of the two sides of the I-shaped groove (20), the rotating shaft (25) is rotatably connected to the I-shaped groove (20), the output end of the servo motor (21) is fixedly connected to one end of one of the two-way threaded rods (22), an engagement mechanism is arranged between each of the two ends of the rotating shaft (25) and each of the two-way threaded rods (22), threaded sleeves (27) which are in screw fit connection are symmetrically arranged on each of the two-way threaded rods (22), and the threaded sleeves (27) are hinged to the first hydraulic telescopic rod (28).
8. The fully mechanized mining downhole protection support frame according to claim 7, wherein the engagement mechanism comprises a first gear (23), the first gear (23) is fixed on a bidirectional threaded rod (22), a second gear (24) is arranged at an end of the rotating shaft (25), and the first gear (23) and the second gear (24) are in engagement connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110433130.4A CN113153400A (en) | 2021-04-22 | 2021-04-22 | Fully-mechanized underground protection support frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110433130.4A CN113153400A (en) | 2021-04-22 | 2021-04-22 | Fully-mechanized underground protection support frame |
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| Publication Number | Publication Date |
|---|---|
| CN113153400A true CN113153400A (en) | 2021-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110433130.4A Pending CN113153400A (en) | 2021-04-22 | 2021-04-22 | Fully-mechanized underground protection support frame |
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| CN (1) | CN113153400A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114000905A (en) * | 2021-11-05 | 2022-02-01 | 梁献茹 | Supporting mechanism for tunnel face reinforcement construction in shield machine cabin |
-
2021
- 2021-04-22 CN CN202110433130.4A patent/CN113153400A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114000905A (en) * | 2021-11-05 | 2022-02-01 | 梁献茹 | Supporting mechanism for tunnel face reinforcement construction in shield machine cabin |
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Application publication date: 20210723 |
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