CN118008424B - Tunneling protection equipment for coal mine exploitation - Google Patents
Tunneling protection equipment for coal mine exploitation Download PDFInfo
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- CN118008424B CN118008424B CN202410419982.1A CN202410419982A CN118008424B CN 118008424 B CN118008424 B CN 118008424B CN 202410419982 A CN202410419982 A CN 202410419982A CN 118008424 B CN118008424 B CN 118008424B
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- 230000005641 tunneling Effects 0.000 title claims abstract description 57
- 239000003245 coal Substances 0.000 title claims abstract description 29
- 230000005540 biological transmission Effects 0.000 claims abstract description 62
- 238000009434 installation Methods 0.000 claims description 29
- 230000002457 bidirectional effect Effects 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 abstract description 2
- 238000005065 mining Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000001681 protective effect Effects 0.000 description 7
- 238000012423 maintenance Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
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Abstract
The invention discloses tunneling protection equipment for coal mine exploitation, and belongs to the technical field of underground protection; the device comprises a tunneling vehicle, wherein a supporting component is connected above the tunneling vehicle through a lifting device; the supporting component comprises a power transmission mechanism, a transmission crawler belt and a supporting frame; the inner wall of the transmission crawler belt is connected with a transmission gear in a meshed manner; the driving crawler belt is connected with the driving device of the tunneling vehicle through a power transmission mechanism, and the power transmission mechanism transmits kinetic energy of the tunneling vehicle to the driving gear and drives the driving crawler belt to rotate; the surface of the transmission crawler belt is fixedly connected with a plurality of assembly seats at equal intervals, the assembly seats are connected with supporting frames, when the transmission crawler belt starts to rotate, the plurality of supporting frames are driven to rotate in sequence, and the supporting frames rotating to the top are spliced to form a supporting surface for supporting the mine tunnel roof; according to the invention, the tunneling protection equipment realizes alternate rolling support along with the tunneling vehicle, so that the safety and convenience are improved, and the tunneling working efficiency is ensured.
Description
Technical Field
The invention belongs to the technical field of underground protection, and relates to tunneling protection equipment for coal mine exploitation.
Background
Coal mines are areas where coal resources are mined by humans and are divided into two types, namely an underground coal mine and an open pit coal mine, mainly according to the distribution characteristics of the coal resources. When the coal seam is buried deeply, it is usually exploited by means of an underground coal mine, which means that it is necessary to excavate the tunnel into the ground to extract the coal. When the distance between the coal bed and the ground surface is relatively short, a surface mining mode is selected, namely, the ground surface layer is directly stripped to excavate coal.
In the exploitation process of underground coal mines, a heading machine is an indispensable key device. However, while coal is being mined, safety issues must also be of great concern, particularly to prevent coal mine collapse. In order to prevent coal mine collapse, a movable protective bracket is generally used as a safety measure. When the heading machine moves underground, the movable protective support can also move along with the movement of the heading machine so as to ensure the safety of a working area.
However, the existing movable protective support has quite complex operation steps when moving along with the heading machine. This is because the movement of the carriage needs to be effected by repeated extension and retraction of the hydraulic cylinders, which not only increases the complexity of the operation, but also reduces the convenience of the protective equipment. Therefore, how to simplify the following steps of the movable protective support and improve the convenience of protective equipment becomes a problem to be solved in the current coal mining technology.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides tunneling protection equipment for coal mine exploitation.
In order to achieve the above purpose, the present invention is realized by the following technical scheme.
The tunneling protection device for coal mine exploitation comprises a tunneling vehicle, wherein a supporting component is connected above the tunneling vehicle through a lifting device; the supporting component comprises a power transmission mechanism, a transmission crawler belt and a supporting frame; the inner wall of the transmission crawler belt is connected with a transmission gear in a meshed manner; the driving crawler belt is connected with the driving device of the tunneling vehicle through a power transmission mechanism, and the power transmission mechanism transmits kinetic energy of the tunneling vehicle to the driving gear and drives the driving crawler belt to rotate; the device comprises a plurality of assembling seats, wherein the assembling seats are fixedly connected to the surface of the transmission crawler at equal intervals, the supporting frames are connected to the assembling seats, when the transmission crawler starts to rotate, the supporting frames are driven to rotate in sequence, and the supporting frames rotating to the top are spliced to form a supporting surface to support a mine tunnel roof.
The assembly seat is provided with a rectangular groove; the bottom of the support frame is symmetrically and slidingly connected with a limit buckle, the limit buckle is connected with a rectangular hole on the inner wall of a rectangular groove of the assembly seat in a penetrating way, the inner wall of the bottom of the support frame is rotationally connected with a bidirectional screw rod, and the bidirectional screw rod is connected with the limit buckle in a meshed way; the limit buckle is clamped into or separated from the rectangular hole of the assembly seat by rotating the bidirectional screw rod.
Further, the power transmission mechanism comprises a first sprocket rod, a transmission sprocket, a second sprocket rod, a reciprocating block and a return spring; the driving chain wheel is fixed on the surface of a driving rod of the tunneling vehicle, and the second chain wheel rod is rotationally connected with the tunneling vehicle; the reciprocating block is slidably arranged on the supporting component, a reset spring is fixedly connected to the surface of one side of the reciprocating block, one side, away from the reciprocating block, of the reset spring is fixedly connected with the supporting component, and a chain wheel is rotatably connected to the other side of the reciprocating block; the chain wheel of the first chain wheel rod, the chain wheel at one end of the second chain wheel rod and the chain wheel rotationally connected with the reciprocating block are meshed and connected through a chain; the chain wheel at the other end of the second chain wheel rod is meshed and connected with the driving chain wheel through another chain; the first sprocket bar is connected with a drive gear of the drive track.
Further, the support assembly comprises an installation table, two sides of the installation table are symmetrically and fixedly connected with connecting plates, and one side, far away from the installation table, of each connecting plate is fixedly connected with a first installation shell and a second installation shell respectively; the transmission track is arranged above the mounting table and is positioned between the first mounting shell and the second mounting shell.
Furthermore, a plurality of transmission gears are rotationally connected to the inner walls of the first installation shell and the second installation shell at equal intervals, and the first sprocket rod is rotationally arranged in the second installation shell; one end of the first sprocket wheel rod extends out of the second installation shell, the other end of the first sprocket wheel rod is fixedly connected with a round rod of a transmission gear on one side, and one end of the first sprocket wheel rod extending out of the second installation shell is connected with a sprocket wheel.
Furthermore, the lifting device is a hydraulic rod, four hydraulic rods are symmetrically and fixedly connected to the inner wall of the round hole at the top of the tunneling vehicle, and the moving end of each hydraulic rod is fixedly connected with the bottom of the mounting table.
Furthermore, the reciprocating block is slidably arranged on the inner wall of the mounting table, and one side of the reset spring, which is far away from the reciprocating block, is fixedly connected with the inner wall of the mounting table.
Further, the support frame includes the backup pad at top and connects the supporting leg in the backup pad bottom perpendicularly, and the inside symmetry sliding connection of supporting leg of support frame has spacing knot.
Furthermore, reinforcing plates are symmetrically and fixedly connected between the bottom surface of the supporting plate of the supporting frame and the supporting legs.
Furthermore, the supporting frame is made of stainless steel materials.
Further, the two sides of the bidirectional screw rod are symmetrically and fixedly connected with driving discs.
Compared with the prior art, the invention has the following beneficial effects:
1. According to the invention, the support frame is followed when the tunneling vehicle is used for mining a coal mine by installing the tunneling vehicle, the transmission crawler belt, the support frame and the like, so that the mine tunnel is supported and protected. Compared with the existing movable support, the movable support saves moving steps, meanwhile, kinetic energy of a tunneling vehicle can be converted into kinetic energy of a transmission crawler belt, and convenience of protective equipment is improved.
2. According to the invention, the bearing performance of the device is effectively improved by adopting the supporting frame made of the stainless steel material. In the process of supporting and protecting the mine tunnel by the supporting frame, the surface of the supporting frame can keep the integrity of the supporting frame even if the surface of the supporting frame is strongly extruded or collided, and abrasion or sinking cannot occur easily. Greatly enhances the durability and stability of the support frame and effectively prolongs the service life of the support frame.
3. According to the invention, the surface of a driving rod of a tunneling vehicle is fixedly connected with a driving sprocket, a reciprocating block is slidably arranged on the inner wall of a mounting table, and the surface of the reciprocating block is fixedly connected with a reset spring; when the reset spring stretches and contracts, the chain wheel on the surface of the reciprocating block is guaranteed to be clung to the chain, and when the mounting table moves up and down, the kinetic energy of the tunneling vehicle can be stably transferred.
4. The invention adopts the structure of alternate rolling support, can replace or disassemble and maintain any support frame, does not influence the support and tunneling work, and ensures the working efficiency.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the tunneling protection apparatus provided by the present invention;
FIG. 2 is a schematic illustration of the position of a hydraulic lever provided by the present invention;
FIG. 3 is an exploded view of a support assembly provided by the present invention;
FIG. 4 is an exploded view of the support bracket and the assembly base provided by the present invention;
Fig. 5 is a schematic view of a power transmission mechanism provided by the present invention.
Reference numerals in the drawings: 1. tunneling vehicle; 2. a mounting table; 3. a connecting plate; 4. a first mounting case; 5. a second mounting case; 6. a drive track; 7. a support frame; 8. a hydraulic rod; 9. a transmission gear; 10. a first sprocket bar; 11. a reinforcing plate; 12. assembling a seat; 13. a limit button; 14. a two-way screw rod; 15. a drive plate; 16. a drive sprocket; 17. a second sprocket bar; 18. a reciprocating block; 19. and a return spring.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail by combining the embodiments and the drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. The following describes the technical scheme of the present invention in detail with reference to examples and drawings, but the scope of protection is not limited thereto.
Referring to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5 in combination, the present embodiment provides a tunneling protection apparatus for coal mine exploitation, the apparatus comprising: tunneling car 1, mount table 2, connecting plate 3, first installation shell 4 and second installation shell 5, tunneling car 1 top is provided with mount table 2, mount table 2 bilateral symmetry fixedly connected with connecting plate 3, two the one side that mount table 2 was kept away from to connecting plate 3 is fixedly connected with first installation shell 4 and second installation shell 5 respectively, and first installation shell 4 and second installation shell 5 are located mount table 2 top. The connection plate 3 ensures a firm connection between the first and second mounting shells 4, 5 and the mounting table 2, so that the whole structure is stable and reliable.
Be provided with drive track 6 between first installation shell 4 and the second installation shell 5, eight support frames 7 are installed to drive track 6 surface equipartition, and when drive track 6 began to rotate, drive support frame 7 and carry out corresponding action to carry out effectual support and protection to the mine tunnel. Along with the movement of the tunneling vehicle 1 in the mine tunnel, the transmission crawler belt 6 and the supporting frames 7 also synchronously move immediately after the tunneling vehicle, and the eight supporting frames 7 alternately support the mine tunnel, so that the safety and stability of the mine tunnel in the mining process are ensured. This structure has promoted the work efficiency of tunnelling car 1, has strengthened the security that the mine tunnel was mined simultaneously.
As shown in fig. 1 and 2, four hydraulic rods 8 are symmetrically and fixedly connected to the inner wall of the circular hole at the top of the tunneling vehicle 1, the moving end of each hydraulic rod 8 is fixedly connected to the bottom of the mounting table 2, and the hydraulic rods 8 play a vital role when the tunneling vehicle 1 performs mining operation. It drives the mounting table 2 to move upwards, thereby driving the transmission crawler belt 6 and the supporting frame 7 connected with the mounting table to ascend together. Along with the support frame 7 gradually clinging to the top of the mine tunnel, the support frame can effectively provide support for the mine tunnel, ensure the stability of the structure of the top of the mine tunnel and prevent the collapse of the mine tunnel caused by mining operation. The supporting frame 7 and the tunneling vehicle 1 synchronously move, so that the top of a working face after the excavation is timely supported, and safety guarantee is provided for the implementation of follow-up continuous tunneling and goaf further reinforcing supporting measures.
Referring to fig. 3 and 4, five transmission gears 9 are rotatably connected to the inner walls of the first installation shell 4 and the second installation shell 5 at equal intervals, and the gear teeth on the surfaces of the transmission gears 9 are meshed with the gear teeth on the inner wall of the transmission crawler belt 6. The second installation shell 5 is internally and rotatably provided with a first sprocket rod 10; one end of the first sprocket wheel rod 10 extends to the outer side of the second installation shell 5, the other end of the first sprocket wheel rod is fixedly connected with a round rod of the rightmost transmission gear 9, one end of the first sprocket wheel rod 10 extending to the outer side of the second installation shell 5 is connected with a sprocket wheel, the sprocket wheel is connected with a power transmission mechanism of the tunneling vehicle 1 through chain engagement, and kinetic energy of the tunneling vehicle 1 is converted into driving force of the transmission crawler belt 6 through the first sprocket wheel rod 10.
Specifically, the power transmission mechanism includes a drive sprocket 16, a second sprocket rod 17, a reciprocating block 18, and a return spring 19; the driving sprocket 16 is fixed on the surface of the driving rod of the tunneling vehicle 1, the second sprocket rod 17 is arranged above the driving sprocket 16, the second sprocket rod 17 rotates on the inner wall of the tunneling vehicle 1, and the two ends of the second sprocket rod 17 are provided with sprockets. The reciprocating block 18 is slidably mounted on the inner wall of the mounting table 2, a reset spring 19 is fixedly connected to one side surface of the reciprocating block 18, one side, far away from the reciprocating block 18, of the reset spring 19 is fixedly connected with the inner wall of the mounting table 2, and a sprocket is rotatably connected to the other side surface of the reciprocating block 18.
The chain wheel of the first chain wheel rod 10, the chain wheel of the side of the second chain wheel rod 17 far away from the mounting table 2 and the chain wheel rotationally connected with the surface of the reciprocating block 18 are meshed and connected through a chain; the sprocket wheel on the side of the second sprocket wheel rod 17 close to the mounting table 2 is engaged with the driving sprocket wheel 16 through another chain. In the moving process of the tunneling vehicle 1, the transmission rod drives the transmission chain wheel 16 to rotate, the chain on the surface of the transmission chain wheel 16 rotates along with the rotation, the chain wheel on one side of the second chain wheel rod 17, which is close to the mounting table 2, is driven to rotate, the whole second chain wheel rod 17 is driven to rotate, the chain on the chain wheel on one side of the second chain wheel rod 17, which is far away from the mounting table 2, is driven to rotate, the chain wheel on the first chain wheel rod 10 and the chain wheel on the surface of the reciprocating block 18 are driven to rotate, and the moving kinetic energy of the tunneling vehicle 1 is converted into the driving force for the rotation of the transmission caterpillar 6.
When the hydraulic rod 8 stretches, the first sprocket rod 10 is driven to move upwards, the sprocket on the first sprocket rod 10 is tightened, the reciprocating block 18 is driven to move rightwards, the reset spring 19 stretches, the surface sprocket of the reciprocating block 18 is guaranteed to cling to a chain, kinetic energy can still be transferred when the mounting table 2 moves upwards, the hydraulic rod 8 contracts, the reset spring 19 resets and contracts when the mounting table 2 resets, the reciprocating block 18 is driven to move leftwards, the surface sprocket of the reciprocating block 18 is guaranteed to cling to the chain, and the kinetic energy of the tunneling vehicle 1 can still be stably transferred when the mounting table 2 moves upwards and downwards.
When the first sprocket bar 10 of the inner wall of the second mounting case 5 rotates, the rotation bar of the first sprocket bar 10 immediately drives the rightmost transmission gear 9 to start rotating. The gear teeth on the surface of the transmission gear 9 are tightly contacted with the gear teeth on the inner wall of the transmission crawler belt 6, so that the effective transmission of power is ensured. With the rotation of the transmission gear 9, the round bars on both sides thereof smoothly rotate in the inner walls of the first and second mounting cases 4 and 5, providing stable and strong power for the continuous rotation of the transmission track 6. Therefore, the transmission crawler belt 6 can drive the supporting frame 7 to accurately move, so that effective supporting and protecting of a mine cavity are realized, and the safety and stability of the whole mining process are ensured.
Referring to fig. 4, eight assembling seats 12 are fixedly connected to the surface of the transmission crawler 6 at equal intervals, and the assembling seats 12 are provided with rectangular grooves. The support frame 7 comprises a support plate at the top and support legs vertically connected to the bottom of the support plate, and the bottoms of the support legs are slidably connected with the rectangular grooves of the assembly seat 12 in a penetrating manner.
Specifically, the supporting leg of the supporting frame 7 is symmetrically and slidingly connected with a limit buckle 13, the limit buckle 13 is connected with a rectangular hole on the inner wall of a rectangular groove of the assembly seat 12 in a penetrating manner, the inner wall of the supporting leg of the supporting frame 7 is rotationally connected with a bidirectional screw rod 14, and the threaded surface of the bidirectional screw rod 14 is meshed with the inner wall of a circular hole of the limit buckle 13. The support frame 7 is moved to the vicinity of the assembly seat 12, so that the bottoms of the support legs can smoothly enter the rectangular groove of the assembly seat 12, and then the threaded surface of the bidirectional screw rod 14 is tightly contacted with the inner wall of the circular hole of the limit buckle 13 by rotating the bidirectional screw rod 14. Along with the rotation of the bidirectional screw rod 14, the two symmetrical limit buckles 13 start to be far away from each other and gradually sent into the rectangular holes on the inner wall of the rectangular groove of the assembly seat 12. After this step is completed, the connection between the assembly seat 12 and the support frame 7 becomes very firm, and a reliable guarantee is provided for supporting and protecting the mine tunnel. When the support frame 7 is required to be overhauled and maintained, the limit buckles 13 can be retracted into the support frame 7 only by reversely rotating the two-way screw rods 14. The design makes the separation of the assembly seat 12 and the support frame 7 simple and convenient, and greatly improves the maintenance efficiency of the equipment. Through such operation, can easily take off support frame 7 and carry out necessary maintenance work, ensure its stability in mine tunnel support protection.
Referring to fig. 4, driving discs 15 are symmetrically and fixedly connected to two sides of the bidirectional screw 14, and the driving discs 15 are rotated to easily provide rotation power for the bidirectional screw 14, so that the bidirectional screw 14 can work smoothly. The design of the drive disk 15 allows for ease and practicality in that it allows for manual operation without reliance on any specialized equipment or tools. This characteristic has improved the convenience that two-way lead screw 14 used greatly for in mine cave support protection in-process, can accomplish the connection and the separation operation of equipment seat 12 and support frame 7 rapidly, high-efficient. At the same time, the design also reduces the skill requirements for the operator.
Referring to fig. 4, reinforcing plates 11 are symmetrically and fixedly connected between the bottom surface of the supporting plate of the supporting frame 7 and the supporting legs, and a triangular structure is formed on a vertical included angle formed between the supporting frame 7 and the transmission crawler 6. The structure has excellent stability in mechanics, and when the support frame 7 supports and protects a mine hole, the triangular stability greatly enhances the supporting performance of the support frame 7. Even if the supporting frame 7 is strongly extruded by the outside, the triangular stable structure can also effectively resist extrusion force and cannot easily bend and deform, so that the safe supporting and protecting of the mine tunnel are ensured. This design not only promotes the durability of support frame 7, has also further improved the security of mine tunnel exploitation.
Referring to fig. 2, eight of the supporting frames 7 are made of a stainless steel material, which is known for its excellent physical strength and excellent tensile resistance. In the process of supporting and protecting the mine tunnel, the surface of the supporting frame 7 can keep the integrity even if being strongly extruded or collided, and abrasion or sinking cannot easily occur. The excellent performance of the material greatly enhances the durability and stability of the support frame 7, and effectively prolongs the service life of the support frame 7. Therefore, the stainless steel material is selected as the main constituent material of the support frame 7, so that not only is the mining safety of the mine tunnel ensured, but also the equipment maintenance cost is reduced, and a powerful guarantee is provided for continuous and stable production of the mine.
While the invention has been described in detail in connection with specific preferred embodiments thereof, it is not to be construed as limited thereto, but rather as a result of a simple deduction or substitution by a person having ordinary skill in the art to which the invention pertains without departing from the scope of the invention defined by the appended claims.
Claims (6)
1. The tunneling protection device for coal mine exploitation comprises a tunneling vehicle (1), and is characterized in that a supporting component is connected above the tunneling vehicle (1) through a lifting device; the supporting component comprises a mounting table (2), a power transmission mechanism, a transmission crawler belt (6) and a supporting frame (7); the inner wall of the transmission crawler belt (6) is connected with a transmission gear (9) in a meshed manner; the driving crawler belt (6) is connected with a driving device of the tunneling vehicle (1) through a power transmission mechanism, and the power transmission mechanism transmits kinetic energy of the tunneling vehicle (1) to the driving gear (9) and drives the driving crawler belt (6) to rotate; the surface of the transmission crawler belt (6) is fixedly connected with a plurality of assembly seats (12) at equal intervals, the assembly seats (12) are connected with support frames (7), when the transmission crawler belt (6) starts to rotate, the plurality of support frames (7) are driven to rotate in sequence, and the support frames (7) rotating to the top are spliced to form a support surface to support a mine tunnel roof;
The assembly seat (12) is provided with a rectangular groove; the supporting frame (7) comprises a supporting plate at the top and supporting legs vertically connected to the bottom of the supporting plate, and limit buckles (13) are symmetrically and slidingly connected inside the supporting legs of the supporting frame (7); the limit buckle (13) is connected with a rectangular hole on the inner wall of a rectangular groove of the assembly seat (12) in a penetrating way, the inner wall of the bottom of the support frame (7) is rotationally connected with a bidirectional screw rod (14), and the bidirectional screw rod (14) is meshed with the limit buckle (13); the limit buckle (13) is clamped into or separated from the rectangular hole of the assembly seat (12) by rotating the bidirectional screw rod (14);
The two sides of the mounting table (2) are symmetrically and fixedly connected with connecting plates (3), and one side, far away from the mounting table (2), of each connecting plate (3) is fixedly connected with a first mounting shell (4) and a second mounting shell (5) respectively; the transmission crawler belt (6) is arranged above the mounting table (2) and is positioned between the first mounting shell (4) and the second mounting shell (5);
The power transmission mechanism comprises a first sprocket wheel rod (10), a transmission sprocket wheel (16), a second sprocket wheel rod (17), a reciprocating block (18) and a return spring (19); the driving chain wheel (16) is fixed on the surface of a driving rod of the tunneling vehicle (1), and the second chain wheel rod (17) is rotationally connected with the tunneling vehicle (1); the reciprocating block (18) is slidably arranged on the inner wall of the mounting table (2), a return spring (19) is fixedly connected to the surface of one side of the reciprocating block (18), and one side, away from the reciprocating block (18), of the return spring (19) is fixedly connected with the inner wall of the mounting table (2); the other side of the reciprocating block (18) is rotationally connected with a chain wheel; the chain wheel of the first chain wheel rod (10), the chain wheel at one end of the second chain wheel rod (17) and the chain wheel rotationally connected with the reciprocating block (18) are connected through a chain; the chain wheel at the other end of the second chain wheel rod (17) is meshed and connected with the driving chain wheel (16) through another chain; the first sprocket bar (10) is connected with a transmission gear (9) of the transmission crawler belt (6).
2. The tunneling protection device for coal mine exploitation according to claim 1, wherein a plurality of transmission gears (9) are rotatably connected to the inner walls of the first installation shell (4) and the second installation shell (5) at equal intervals, and the first sprocket rod (10) is rotatably installed inside the second installation shell (5); one end of the first sprocket wheel rod (10) extends out of the second installation shell (5), the other end of the first sprocket wheel rod is fixedly connected with a round rod of a transmission gear (9) on one side, and one end of the first sprocket wheel rod (10) extending out of the second installation shell (5) is connected with a sprocket wheel.
3. The tunneling protection device for coal mine exploitation according to claim 1, wherein the lifting device is a hydraulic rod (8), four hydraulic rods (8) are symmetrically and fixedly connected to the inner wall of a round hole at the top of the tunneling vehicle (1), and the moving end of each hydraulic rod (8) is fixedly connected with the bottom of the installation table (2).
4. The tunneling protection device for coal mine exploitation according to claim 1, wherein reinforcing plates (11) are symmetrically and fixedly connected between the bottom surface of the supporting plate of the supporting frame (7) and the supporting legs.
5. A tunneling protection apparatus for coal mine exploitation according to claim 1, wherein the support (7) is made of stainless steel material.
6. The tunneling protection device for coal mine exploitation according to claim 1, wherein the driving discs (15) are symmetrically and fixedly connected to two sides of the bidirectional screw rod (14).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410419982.1A CN118008424B (en) | 2024-04-09 | 2024-04-09 | Tunneling protection equipment for coal mine exploitation |
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| CN202410419982.1A CN118008424B (en) | 2024-04-09 | 2024-04-09 | Tunneling protection equipment for coal mine exploitation |
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