CN114658437B - Quick gangue discharging equipment for coal roadway tunneling and anchoring integrated machine - Google Patents
Quick gangue discharging equipment for coal roadway tunneling and anchoring integrated machine Download PDFInfo
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- CN114658437B CN114658437B CN202210451178.2A CN202210451178A CN114658437B CN 114658437 B CN114658437 B CN 114658437B CN 202210451178 A CN202210451178 A CN 202210451178A CN 114658437 B CN114658437 B CN 114658437B
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- 238000004873 anchoring Methods 0.000 title claims abstract description 20
- 230000005641 tunneling Effects 0.000 title claims abstract description 18
- 239000003245 coal Substances 0.000 title claims abstract description 16
- 238000007599 discharging Methods 0.000 title claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 18
- 210000001503 joint Anatomy 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 4
- 238000005065 mining Methods 0.000 abstract description 2
- 239000002390 adhesive tape Substances 0.000 description 5
- 230000005484 gravity Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000010878 waste rock Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/04—Transport of mined material in gravity inclines; in staple or inclined shafts
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Structure Of Belt Conveyors (AREA)
Abstract
The invention discloses quick gangue discharging equipment for a coal roadway tunneling and anchoring integrated machine, which belongs to the technical field of mining roadway tunneling and comprises a machine body assembly and a conveying mechanism arranged on one side of the machine body assembly, wherein the conveying mechanism comprises an adjusting assembly and a belt surface assembly arranged above the adjusting assembly, and the belt surface assembly comprises two rollers and two auxiliary belts arranged on the outer wall of the two rollers. According to the invention, the conveying mechanism and the machine body assembly are arranged, the conveying members of the existing anchor digger basically depend on the rubber belt for conveying, and the hidden danger of gangue sliding easily occurs when the rubber belt is conveyed to a roadway with a larger gradient, and the conveying mechanism of the device consists of the adjusting assembly and the belt surface assembly, so that materials conveyed on the belt surface assembly can be lifted and limited at a certain angle, the materials are prevented from sliding off, meanwhile, the adjusting assembly can adjust the gradient of the belt surface assembly, so that the inclination is matched with the angle of the roadway, and the conveying mechanism is used as the tail end member of the device, so that repeated collocation can be performed.
Description
Technical Field
The invention relates to a gangue conveying device, and belongs to the technical field of mining roadway tunneling.
Background
The excavating and anchoring integrated machine is core equipment for rapid excavation of coal mine tunnel, and can simultaneously carry out cutting and anchoring operation, wherein the cutting depth is the maximum stroke of a driving oil cylinder in each operation cycle.
The conveying members of the existing digging and anchoring machine basically depend on rubber belt conveying, and the rubber belt conveying is easy to cause hidden dangers of gangue sliding when aiming at a roadway with a larger gradient.
How to research a quick gangue discharging device for a coal roadway driving and anchoring integrated machine is a current problem to be solved urgently.
Disclosure of Invention
The invention mainly aims to solve the problem that hidden dangers of gangue sliding easily occur when the adhesive tape is transported to a roadway with a larger gradient in the prior art, and provides the quick gangue discharging equipment for the coal roadway tunneling and anchoring integrated machine.
The aim of the invention can be achieved by adopting the following technical scheme:
the utility model provides a coal roadway digs anchor all-in-one and uses quick play gangue equipment, includes the organism subassembly and sets up in the conveying mechanism of its one side, conveying mechanism includes adjusting part and sets up in the area face subassembly of top, area face subassembly includes two cylinders and sets up in two of its outer wall assist the area, two assist and be provided with the area between the area, assist the area inner wall and be provided with a plurality of ring cover, the outer wall is provided with a plurality of hack levers, hack lever both sides all are provided with the strap, the strap inner wall is provided with the sleeve pipe, the sleeve pipe inner wall is provided with the inserted bar, the inserted bar with ring cover adaptation, be provided with the zhong being provided with the folding cover, the cylinder is dumbbell structure, the area is concave surface structure, the inserted bar with be provided with the spring between the sleeve pipe.
Further, the adjusting component comprises two grillages and a plurality of clamping plates arranged between the grillages, a ground rail is arranged at the top of each clamping plate, and a sliding block is arranged on the outer wall of each ground rail.
Further, one of the plate frames is connected with the machine body assembly, two brackets are arranged at the top of the plate frames, and rocker arms are arranged at the tops of the brackets.
Furthermore, two inner walls at two ends of the rocker arm are respectively provided with a mandrel, and the roller is arranged on the outer wall of the mandrels.
Further, a rotary motor is arranged on one side of the rocker arm, and an output shaft of the rotary motor is connected with the mandrel.
Further, a sliding groove with a T-shaped structure is formed in the bottom of the rocker arm, a telescopic cylinder is arranged at the top of the sliding block, a sliding shaft is arranged on a piston rod of the telescopic cylinder, and the sliding shaft is arranged on the inner wall of the sliding groove.
Further, the body assembly comprises a front end frame and a rear end frame, a tunneling pipe is arranged on one side of the front end frame, and an output pump and a material pipe are arranged at the top of the rear end frame.
Further, the rear end frame is connected with the plate frame, a connecting frame is arranged on one side of the front end frame, and a butt joint frame is arranged on one side of the rear end frame.
Further, a communication pipe is arranged between the connecting frame and the butt joint frame, and a protective cover is arranged on the outer side of the communication pipe.
Further, the inner wall of one side of the butt joint frame is provided with a swing motor, an output shaft of the swing motor is connected with the connecting frame, an auxiliary shaft is arranged at the bottom of the swing motor, and the auxiliary shaft is arranged on the inner wall of the butt joint frame.
The beneficial technical effects of the invention are as follows: according to the quick gangue discharging equipment for the coal roadway tunneling and anchoring integrated machine, the conveying mechanism and the machine body assembly are arranged, the conveying members of the existing tunneling and anchoring machine basically depend on rubber belt conveying, hidden dangers of gangue sliding easily occur when the rubber belt conveying is aimed at a roadway with a larger gradient, the conveying mechanism of the device consists of the adjusting assembly and the belt surface assembly, materials conveyed on the belt surface assembly can be lifted and limited at a certain angle to avoid sliding, meanwhile, the adjusting assembly can adjust the gradient of the belt surface assembly to enable the inclination of the belt surface assembly to be matched with the angle of the roadway, and the conveying mechanism is used as the tail end member of the device, repeated collocation can be carried out, and long-distance gangue conveying is further completed; the roller rotates to drive the auxiliary belt and the middle belt to synchronously rotate, meanwhile, the two sides of the auxiliary belt are arranged by virtue of the annular sleeve and the hack lever, so that the middle ring is attached to the surface of the middle belt, meanwhile, after the middle ring is used for supporting gangue, the folding sleeve is extended backwards by virtue of gravity to expand supporting space, and by virtue of the spring between the inserted rod and the sleeve, the hack lever and the auxiliary belt can be separated by pulling the inserted rod, and the folding sleeve has an extending function, so that the middle ring can be prevented from rotating at will, and further, the annular sleeve is inlaid in the auxiliary belt, so that the breakage caused by stress concentration of the auxiliary belt can be avoided; through setting up the adjusting part, wherein the cardboard relies on the buckle of opposite side to connect, when the slider motion, the cardboard can dismantle the reinstallation, reduces space occupation, simultaneously reserves space for linking another group conveying mechanism, and the rotation motor starts, drives the dabber and rotates, provides moment of torsion for the cylinder rotation, and the telescopic cylinder of slider starts, can drive the sliding shaft motion to utilize the telescopic cylinder to stretch out, make the sliding shaft slide in the spout inside, thereby drive the rocking arm swing, accomplish inclination adjustment; through setting up organism subassembly, front end frame and rear end frame constitute the whole framework of anchor machine of digging to realize its corresponding function, and when narrower to the tunnel, swing motor starts, adjusts the relative angle that links up frame and butt joint frame, makes the relative angle of front end frame and rear end frame simultaneously, and the communicating pipe can guarantee material transportation and power transmission, and gangue is sent to behind the output pump simultaneously and is sent into conveying mechanism department by the material pipe, and the safety cover possesses folding function, can protect the communicating pipe.
Drawings
FIG. 1 is a schematic view of the overall structure according to the present invention;
FIG. 2 is a schematic view of a conveyor mechanism according to the present invention;
FIG. 3 is a schematic illustration of a belt structure according to the present invention;
FIG. 4 is a schematic view of a collar structure according to the present invention;
FIG. 5 is a schematic view of a rocker arm structure according to the present invention;
FIG. 6 is a schematic illustration of a middle ring structure according to the present invention;
FIG. 7 is a schematic view of a pallet structure according to the present invention;
FIG. 8 is a schematic view of a drum construction according to the present invention;
fig. 9 is a schematic view of a structure of a connecting frame according to the present invention.
In the figure: the device comprises a front end frame, a 2-connecting frame, a 3-rear end frame, a 4-material pipe, a 5-plate frame, a 6-tunneling pipe, a 7-belt surface assembly, an 8-rotary motor, a 9-bracket, a 10-roller, an 11-mandrel, a 12-rocker arm, a 13-auxiliary belt, a 14-belt, a 15-hack lever, a 16-loop, a 17-inserting rod, a 18-middle loop, a 19-folding sleeve, a 20-clamping plate, a 21-ground rail, a 22-sliding shaft, a 23-telescopic cylinder, a 24-sliding block, a 25-connecting pipe, a 26-protective cover, a 27-connecting frame, a 28-swinging motor, a 29-auxiliary shaft and a 30-sleeve.
Detailed Description
In order to make the technical solution of the present invention more clear and obvious to those skilled in the art, the present invention will be described in further detail with reference to examples and drawings, but the embodiments of the present invention are not limited thereto.
As shown in fig. 1-9, the quick gangue discharging device for the coal roadway tunneling and anchoring integrated machine provided by the embodiment comprises a machine body assembly and a conveying mechanism fixedly connected to one side of the machine body assembly, wherein the conveying mechanism comprises an adjusting assembly and a belt surface assembly 7 arranged above the adjusting assembly, the conveying mechanism and the machine body assembly are arranged, the conveying members of the conventional tunneling and anchoring machine are basically transported by means of adhesive tapes, hidden dangers of gangue sliding easily occur when the adhesive tapes are transported to a roadway with a larger gradient, the conveying mechanism of the device is composed of the adjusting assembly and the belt surface assembly 7, materials conveyed on the belt surface assembly 7 can be lifted and limited at a certain angle, sliding of the materials is avoided, meanwhile, the adjusting assembly can adjust the inclination of the belt surface assembly 7, so that the inclination of the materials is matched with the roadway angle, and the conveying mechanism is used as a tail end member of the device and can be repeatedly matched, and further long-distance gangue conveying is completed; the belt surface assembly 7 comprises two rollers 10 and two auxiliary belts 13 arranged on the outer wall of the belt surface assembly, a middle belt 14 is fixedly connected between the two auxiliary belts 13, a plurality of annular sleeves 16 are arranged on the inner wall of the auxiliary belts 13, a plurality of hack levers 15 are movably connected to the outer wall of the auxiliary belts, access boards are fixedly connected to the two sides of the hack levers 15, a sleeve 30 is fixedly connected to the inner wall of the access boards, a plug rod 17 is slidably connected to the inner wall of the sleeve 30, the plug rod 17 is matched with the annular sleeves 16, a middle ring 18 is arranged in the middle of the hack lever 15, a folding sleeve 19 is arranged on the inner wall of the middle ring 18, the rollers 10 are of dumbbell structures, the middle belt 14 is of a concave structure, and springs are arranged between the plug rod 17 and the sleeve 30. Wherein cylinder 10 rotates, drive and assist area 13 and well 14 synchronous rotation, simultaneously assist area 13 both sides and rely on the setting of ring cover 16 and hack lever 15, make the middle ring 18 laminating in well 14 surface, simultaneously after middle ring 18 accepts the waste rock, folding cover 19 relies on gravity to extend backward, expand and accept the space, and rely on the spring between inserted bar 17 and sleeve pipe 30, can make hack lever 15 and assist area 13 separation through pulling inserted bar 17, and folding cover 19 possesses the extension function, can avoid middle ring 18 to rotate at will, further, ring cover 16 inlays in assisting area 13 inside, can avoid assisting area 13 stress concentration to lead to the fracture.
In this embodiment, as shown in fig. 1-8, the adjusting assembly includes two grillage 5 and a plurality of clamping plates 20 disposed therebetween, a ground rail 21 is disposed on top of the clamping plates 20, and a sliding block 24 is slidably connected to an outer wall of the ground rail 21; one of the plate frames 5 is fixedly connected with the machine body assembly, the top of the plate frame is fixedly connected with two brackets 9, and the top of each bracket 9 is rotatably connected with a rocker arm 12; the inner walls at the two ends of the two rocker arms 12 are respectively and rotatably connected with a mandrel 11, and the roller 10 is fixedly connected with the outer wall of the mandrel 11; one side of the rocker arm 12 is fixedly connected with a rotary motor 8, and an output shaft of the rotary motor 8 is fixedly connected with a mandrel 11; the bottom of the rocker arm 12 is provided with a chute with a T-shaped structure, the top of the sliding block 24 is fixedly connected with a telescopic cylinder 23, a piston rod of the telescopic cylinder 23 is fixedly connected with a sliding shaft 22, and the sliding shaft 22 is slidably connected to the inner wall of the chute. Through setting up adjusting part, wherein cardboard 20 relies on the buckle of opposite side to connect, when slider 24 motion, cardboard 20 can dismantle the heavy load, reduces the space occupation, simultaneously for linking another group conveying mechanism space reservation, and rotary motor 8 starts, drives dabber 11 and rotates, provides moment of torsion for cylinder 10 rotates, and slider 24's telescopic cylinder 23 starts, can drive slide shaft 22 motion to utilize telescopic cylinder 23 to stretch out, make slide shaft 22 slide in the spout inside, thereby drive rocking arm 12 swing, accomplish the inclination adjustment.
In this embodiment, as shown in fig. 1 and 9, the body assembly includes a front end frame 1 and a rear end frame 3, a tunneling pipe 6 is provided at one side of the front end frame 1, and an output pump and a material pipe 4 are provided at the top of the rear end frame 3; the rear end frame 3 is fixedly connected with the plate frame 5, one side of the front end frame 1 is fixedly connected with the connecting frame 2, and one side of the rear end frame 3 is fixedly connected with the butt joint frame 27; a communication pipe 25 is arranged between the connecting frame 2 and the butt joint frame 27, and a protective cover 26 is arranged on the outer side; the inner wall of one side of the butt joint frame 27 is provided with a swing motor 28, an output shaft of the swing motor 28 is fixedly connected with the connecting frame 2, an auxiliary shaft 29 is arranged at the bottom of the swing motor, and the swing motor is rotatably connected to the inner wall of the butt joint frame 27. Through setting up organism subassembly, wherein front end frame 1 and rear end frame 3 constitute the whole framework of anchor digger to realize its corresponding function, and when narrower to the tunnel, swing motor 28 starts, adjusts the relative angle that links up frame 2 and butt joint frame 27, makes the relative angle of front end frame 1 and rear end frame 3 simultaneously, and the communicating pipe 25 can guarantee material transportation and power transmission, and gangue is sent into conveying mechanism department by material pipe 4 after the delivery pump simultaneously, and safety cover 26 possesses folding function, can protect communicating pipe 25.
In this embodiment, as shown in fig. 1 to 9, the working process of the quick gangue discharging device for the coal roadway tunneling and anchoring integrated machine provided in this embodiment is as follows:
Step 1: the rotary motor 8 is started to drive the mandrel 11 to rotate, so as to provide torque for the rotation of the roller 10 and drive the auxiliary belt 13 and the middle belt 14 to synchronously rotate;
step 2: after the middle ring 18 receives the gangue, the folding sleeve 19 extends backwards by gravity to expand the receiving space;
Step 3: as the slide 24 moves, the card 20 may be disassembled and reassembled, reducing space occupation.
In summary, in this embodiment, according to the quick gangue discharging device for the coal roadway tunneling and anchoring integrated machine of this embodiment, by setting the conveying mechanism and the machine body component, the conveying member of the existing tunneling and anchoring machine basically depends on the transportation of the adhesive tape, and the hidden danger of the gangue sliding easily occurs when the adhesive tape is transported to the roadway with a larger gradient, and the conveying mechanism of the device is composed of the adjusting component and the belt surface component 7, so that the material conveyed on the belt surface component 7 can be lifted and limited at a certain angle, the sliding of the material is avoided, meanwhile, the adjusting component can adjust the gradient of the belt surface component 7, so that the inclination is matched with the roadway angle, and the conveying mechanism is used as the tail end component of the device, so that the repeated matching can be performed, and the long-distance gangue conveying is completed; the roller 10 rotates to drive the auxiliary belt 13 and the middle belt 14 to synchronously rotate, meanwhile, the two sides of the auxiliary belt 13 are arranged by virtue of the annular sleeve 16 and the hack lever 15, so that the middle ring 18 is attached to the surface of the middle belt 14, meanwhile, after the middle ring 18 receives gangue, the folding sleeve 19 extends backwards by virtue of gravity to expand a receiving space, and by virtue of a spring between the inserting rod 17 and the sleeve 30, the hack lever 15 and the auxiliary belt 13 can be separated by pulling the inserting rod 17, and the folding sleeve 19 has an extending function, so that the middle ring 18 can be prevented from rotating randomly, and further, the annular sleeve 16 is inlaid in the auxiliary belt 13, so that breakage caused by stress concentration of the auxiliary belt 13 can be avoided;
Through setting up the adjusting part, wherein cardboard 20 relies on the buckle on opposite side to connect, when the slider 24 moves, cardboard 20 can dismantle the reinstallation, reduce space occupation, reserve space for linking another group of conveying mechanism at the same time, and rotary motor 8 starts, drive dabber 11 to rotate, provide moment of torsion for cylinder 10 rotation, and the telescopic cylinder 23 of slider 24 starts, can drive slide shaft 22 motion, and utilize telescopic cylinder 23 to stretch out, make slide shaft 22 slide in the spout, thus drive rocking arm 12 to swing, accomplish the inclination adjustment;
Through setting up organism subassembly, wherein front end frame 1 and rear end frame 3 constitute the whole framework of anchor digger to realize its corresponding function, and when narrower to the tunnel, swing motor 28 starts, adjusts the relative angle that links up frame 2 and butt joint frame 27, makes the relative angle of front end frame 1 and rear end frame 3 simultaneously, and the communicating pipe 25 can guarantee material transportation and power transmission, and gangue is sent into conveying mechanism department by material pipe 4 after the delivery pump simultaneously, and safety cover 26 possesses folding function, can protect communicating pipe 25.
The above is merely a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art will be able to apply equivalents and modifications according to the technical solution and the concept of the present invention within the scope of the present invention disclosed in the present invention.
Claims (5)
1. The quick gangue discharging equipment for the coal roadway tunneling and anchoring integrated machine is characterized by comprising a machine body assembly and a conveying mechanism arranged on one side of the machine body assembly, wherein the conveying mechanism comprises an adjusting assembly and a belt surface assembly (7) arranged above the adjusting assembly, the belt surface assembly (7) comprises two rollers (10) and two auxiliary belts (13) arranged on the outer wall of the two rollers, a middle belt (14) is arranged between the two auxiliary belts (13), a plurality of annular sleeves (16) are arranged on the inner wall of the auxiliary belts (13), a plurality of hack levers (15) are arranged on the outer wall of the auxiliary belts, a side plate is arranged on two sides of the hack lever (15), a sleeve (30) is arranged on the inner wall of the side plate, an inserting rod (17) is arranged on the inner wall of the sleeve (30), an inserting rod (17) is matched with the annular sleeve (16), a middle ring (18) is arranged in the middle of the hack lever (15), the inner wall of the middle ring (18) is provided with a folding sleeve (19), the rollers (10) are of a dumbbell structure, the middle belt (14) is of a concave structure, a side plate (17) is arranged between the sleeve (17) and the sleeve (30) and a plurality of end plates (20) are arranged on the front end plate (20) of the machine body assembly, the end plate and the end plate (20), front end frame (1) one side is provided with tunneling pipe (6), rear end frame (3) top is provided with output pump and material pipe (4), rear end frame (3) with grillage (5) are connected, front end frame (1) one side is provided with links up frame (2), rear end frame (3) one side is provided with butt joint frame (27), link up frame (2) with be provided with between butt joint frame (27) communication pipe (25), and the outside is provided with safety cover (26), butt joint frame (27) one side inner wall is provided with swing motor (28), the output shaft of swing motor (28) with link up frame (2) and be provided with auxiliary shaft (29) in the bottom the butt joint frame (27) inner wall.
2. The quick gangue discharging device for the coal roadway driving and anchoring integrated machine according to claim 1, wherein one plate frame (5) is connected with the machine body assembly, two brackets (9) are arranged at the top of the plate frame, and rocker arms (12) are arranged at the top of the brackets (9).
3. The quick gangue discharging device for the coal roadway driving and anchoring integrated machine according to claim 2, wherein mandrel shafts (11) are arranged on inner walls of two ends of the two rocker arms (12), and the roller (10) is arranged on the outer wall of the mandrel shafts (11).
4. A quick gangue discharging device for a coal roadway driving and anchoring integrated machine according to claim 3, wherein a rotary motor (8) is arranged on one side of the rocker arm (12), and an output shaft of the rotary motor (8) is connected with the mandrel (11).
5. The quick gangue discharging device for the coal roadway tunneling and anchoring integrated machine according to claim 4, wherein a chute with a T-shaped structure is arranged at the bottom of the rocker arm (12), a telescopic cylinder (23) is arranged at the top of the sliding block (24), a sliding shaft (22) is arranged on a piston rod of the telescopic cylinder (23), and the sliding shaft (22) is arranged on the inner wall of the chute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210451178.2A CN114658437B (en) | 2022-04-26 | 2022-04-26 | Quick gangue discharging equipment for coal roadway tunneling and anchoring integrated machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210451178.2A CN114658437B (en) | 2022-04-26 | 2022-04-26 | Quick gangue discharging equipment for coal roadway tunneling and anchoring integrated machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114658437A CN114658437A (en) | 2022-06-24 |
| CN114658437B true CN114658437B (en) | 2024-06-18 |
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ID=82038243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210451178.2A Active CN114658437B (en) | 2022-04-26 | 2022-04-26 | Quick gangue discharging equipment for coal roadway tunneling and anchoring integrated machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114658437B (en) |
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| Publication number | Publication date |
|---|---|
| CN114658437A (en) | 2022-06-24 |
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