A new type of coal tunnel fast boring machine

Abstract

This invention discloses a novel rapid coal roadway tunneling machine, solving the problems of low safety factor and low working efficiency in existing coal roadway excavation devices. The invention includes an adjustable shield body and a rear support shield. The adjustable shield body is connected to the rear support shield via a propulsion cylinder. The adjustable shield body is equipped with a cutting device and an advanced drilling rig. A shoveling and transporting device is located at the lower part of the adjustable shield body. A top anchor drilling system is installed between the adjustable shield body and the rear support shield. The rear support shield is equipped with a side anchor drilling system, a dust removal system, and a slag conveying system, which is connected to the shoveling and transporting device. This invention has advantages such as strong geological adaptability, high tunneling efficiency, high degree of mechanization, and operational safety, and has high promotional value.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine tunnel construction, in particular to a novel coal tunnel fast excavator. Background Art

[0002] The tunneling operation is a prerequisite for all other mining operations in coal mine production. With the substantial improvement of the efficiency of the mining face, the contradiction that the tunneling speed cannot keep up with the mining demand has become increasingly prominent in many mining areas. Safe, fast and efficient tunneling and support technology is a necessary condition to ensure high production and high efficiency of coal mines. At present, there are three main ways of mechanized rapid tunneling in underground coal mines: the first is the traditional single tunneling, and the main equipment of the working face is the tunneling machine and the bolting machine; the second is the double tunneling, which uses a continuous coal mining machine for tunneling. This tunneling mode is equipped with an advanced bolting drilling vehicle. The third is the single tunnel tunneling of the integrated digging and anchoring machine. However, the above three processes and equipment have the following shortcomings: tunneling, anchoring, cross operation, low production efficiency, and poor safety; the operation of the continuous coal mining machine and the integrated digging and anchoring digging and anchoring unit can only play its rapid tunneling performance when the roof is solid, and the adaptability to working conditions is poor; its empty top distance is large, the empty top time is long, and there are safety hazards. Summary of the invention

[0003] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a novel coal tunnel rapid boring machine, which solves the problems of low safety factor and low working efficiency of coal tunnel excavation devices in the prior art.

[0004] The technical solution of the present invention is achieved as follows: a new type of coal tunnel rapid tunneling machine includes an adjustable shield body and a rear support shield. The adjustable shield body is connected to the rear support shield through a thrust cylinder. A cutting device and an advance drill are provided inside the adjustable shield body. A shoveling device is provided at the lower part of the adjustable shield body. A top anchor drilling system is provided between the adjustable shield body and the rear support shield. An auxiliary anchor drilling system, a dust removal system and a slag conveying system are provided on the rear support shield. The slag conveying system is connected to the shoveling device.

[0005] The adjustable shield body comprises a top shield, side shields and a bottom shield, the side shields are symmetrically arranged on both sides of the bottom shield, the lower parts of the side shields are hinged to the bottom shield, the inner walls of the side shields are provided with lateral cylinders, one end of the lateral cylinders is connected to the side shields, and the other end is connected to the bottom shield, the inner wall of the top shield is provided with a top cylinder, one end of the top cylinder is connected to the top shield, and the other end is connected to the bottom shield.

[0006] A hollow slide groove is arranged in the top shield, a movable shield is slidably arranged in the hollow slide groove, and the movable shield is connected with the top shield through a transverse oil cylinder.

[0007] The cutting device includes a base, a cantilever beam and a cutting drum. The base is fixed inside an adjustable shield body. The cantilever beam is hinged to the base. The cutting drum is arranged at the free end of the cantilever beam. A swing cylinder is arranged on the cantilever beam. One end of the swing cylinder is connected to the cantilever beam and the other end is connected to the base. The cutting drum is connected to a driving device arranged in the cantilever beam.

[0008] The cutting drum comprises a drum, on which a plurality of cutting teeth are arranged.

[0009] The shoveling device comprises a bucket, a slag removing toothed disc is arranged on the lower surface of the bucket, a slag conveying channel is arranged at the rear of the bucket, and the slag conveying channel is connected with a slag stone conveying system.

[0010] Two groups of support shoes are symmetrically arranged in the rear support shield, and the two groups of support shoes are connected by a tightening oil cylinder.

[0011] The top anchor drilling system includes at least two vertically arranged anchor drilling rigs I, which are symmetrically arranged on both sides of the adjustable shield; the auxiliary anchor drilling system includes at least two inclined anchor drilling rigs II, which are symmetrically arranged on both sides of the rear support shield.

[0012] The dust removal system is connected with the adjustable shield body through an air duct, and the air duct extends into the interior of the adjustable shield body.

[0013] The beneficial effects of the present invention are as follows: 1. The cutting device adopts a retractable roller to cut and excavate up and down, which can meet the requirements of various working surfaces for the cross-sectional size of the tunnel and realize the excavation of any rectangular cross-section; 2. While the cutting device excavates the section, the top anchor drilling system and the side anchor drilling system can realize parallel operation, realize the parallel operation of excavation and anchoring, and improve the excavation efficiency. 3. The present invention adopts the excavation method of front and rear support, which has good adaptability to the top surface, bottom surface and side wall. At the same time, the equipment has a small top-to-empty distance. When passing through the fault structure zone and the broken coal seam, it can effectively reduce the risk of roof collapse accidents; enhance adaptability and improve the construction safety factor. 4. The adjustable shield body and the rear support shield have a protective function to ensure the safety of equipment and operators, and use negative pressure technology to remove dust, effectively improving the working environment. The present invention has the advantages of strong geological adaptability, high excavation efficiency, high degree of mechanization, and safe operation, and has a high promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0015] Figure 1It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 for Figure 1 Center A view.

[0017] Figure 3 for Figure 1 Center B view.

[0018] Figure 4 for Figure 1 Center C view.

[0019] Figure 5 for Figure 1 Center D view.

[0020] Figure 6 for Figure 1 Middle E view. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Embodiment 1, as Figure 1 As shown, a new type of coal tunnel fast tunneling machine includes an adjustable shield body 1 and a rear support shield 2. The adjustable shield body 1 is connected to the rear support shield 2 through four thrust cylinders 3. The four thrust cylinders are extended and retracted to realize the step-changing and direction-adjusting operations of the whole machine. A cutting device 4 and an advance drill rig 5 are arranged in the adjustable shield body 1. The cutting device 4 swings up and down through the power provided by the hydraulic system to realize the excavation of a rectangular section. The advance drill rig 5 performs advanced geological exploration operations through hydraulic control. A shovel-carrying device 6 is arranged at the lower part of the adjustable shield body 1. The shovel-carrying device collects the coal or rock excavated by the cutting device. A top anchor drill system 7 is arranged between the adjustable shield body 1 and the rear support shield 2. The top anchor drill system performs anchor support operations at the top of the tunnel. The rear support shield 2 is provided with a side bolting system 8, a dust removal system 9 and a slag conveying system 10. The slag conveying system 10 is connected to the shovel 6. The coal or rock of the shovel is transported to the outside of the tunnel through the slag conveying system. The side bolting system 8 is used for bolting support operations at the side of the tunnel. The dust removal system 9 is connected to the adjustable shield body 1 through an air duct, and the air duct extends into the inside of the adjustable shield body 1. The dust removal system is responsible for the negative pressure dust removal work of the excavation face during the excavation process.

[0023] Embodiment 2, as Figure 2-6As shown, a novel coal tunnel fast tunneling machine is described, wherein the adjustable shield body 1 comprises a top shield 1-1, side shields 1-2 and a bottom shield 1-3, the side shields 1-2 are symmetrically arranged on both sides of the bottom shield 1-3, the lower part of the side shields 1-2 is hinged to the bottom shield 1-3, a lateral cylinder 1-4 is arranged on the inner wall of the side shield 1-2, one end of the lateral cylinder 1-4 is connected to the side shield 1-2, and the other end is connected to the bottom shield 1-3, through the extension and retraction of the lateral cylinder, the side shield rotates around the hinge point, so that the side shield can support the tunnel tightly. A top cylinder 1-5 is provided on the inner wall of the top shield 1-1, one end of the top cylinder 1-5 is connected to the top shield 1-1, and the other end of the top cylinder 1-5 is connected to the bottom shield 1-3. The top shield is moved up and down by the extension and retraction of the top cylinder. When the top shield 1-1, the side shield 1-2 and the bottom shield 1-3 support the inner wall of the tunnel, a rectangular support is formed.

[0024] Furthermore, a hollow slide groove is provided in the top shield 1-1, and a movable shield 1-6 is slidably provided in the hollow slide groove, and the movable shield 1-6 is connected to the top shield 1-1 through a transverse oil cylinder 1-7. The movable shield 1-6 cooperates with the top shield 1-1, and the movable shield moves left and right along the top shield through the extension and contraction of the transverse oil cylinder.

[0025] Furthermore, the cutting device 4 includes a base 4-1, a cantilever beam 4-2 and a cutting drum 4-3. The base 4-1 is fixed inside the adjustable shield body 1 and fixedly connected to the bottom shield. The cantilever beam 4-2 is hinged to the base 4-1, and the cantilever beam can swing up and down around the hinge point. The cutting drum 4-3 is arranged at the free end of the cantilever beam 4-2. The cantilever beam 4-2 is provided with a swing cylinder 4-4. One end of the swing cylinder 4-4 is connected to the cantilever beam 4-2 and the other end is connected to the base 4-1. Through the extension and retraction of the swing cylinder, the cantilever beam and the cutting drum are driven to swing up and down, so as to realize the excavation of the tunnel by the up and down movement of the cutting drum. The cutting drum 4-3 is connected to the driving device arranged in the cantilever beam 4-2, so as to drive the cutting drum to rotate. The cutting drum 4-3 includes a drum 4-5, and a plurality of cutting teeth 4-6 are provided on the drum 4-5. One end of the cutting teeth 4-6 is a sharp point, which is used for rapid excavation of the tunnel.

[0026] The other structures are the same as those in Example 1.

[0027] Embodiment 3, a new type of coal tunnel fast excavator, the shovel device 6 includes a bucket 6-1, the lower surface of the bucket 6-1 is provided with a slag tooth plate 6-2, which is used to push coal soil into the bucket, and the rear part of the bucket 6-1 is provided with a slag delivery channel 6-3, which is connected to the slag conveying system 10, and the slag conveying system 10 adopts a scraper conveyor for conveying coal soil or rock soil. Two groups of support shoes 2-1 are symmetrically arranged in the rear support shield 2, and the two groups of support shoes 2-1 are connected by a tightening oil cylinder 2-2, which is horizontally arranged, and the support shoes can be extended and retracted left and right by the control of the oil cylinder. The support shoes are tightened on the cave wall by extending the tightening oil cylinder, which can provide a support reaction force for the propulsion oil cylinder to propel forward.

[0028] Furthermore, the top anchor drilling system 7 includes at least two (or four) vertically arranged anchor drilling machines I71, which are symmetrically arranged on both sides of the adjustable shield 1, and are used for anchor support operations at the top of the tunnel. The side anchor drilling system 8 includes at least two (or four) tilted anchor drilling machines II81, which are symmetrically arranged on both sides of the rear support shield 2; four anchor drilling machines II are used to perform anchor support operations at the side of the tunnel.

[0029] The other structures are the same as those in Example 2.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel coal tunnel fast tunneling machine, comprising an adjustable shield body (1) and a rear support shield (2), wherein the adjustable shield body (1) is connected to the rear support shield (2) via a thrust cylinder (3), and is characterized in that: The adjustable shield body (1) is provided with a cutting device (4) and an advance drill (5), a scraper (6) is provided at the lower part of the adjustable shield body (1), a top anchor drill system (7) is provided between the adjustable shield body (1) and the rear support shield (2), an auxiliary anchor drill system (8), a dust removal system (9) and a slag conveying system (10) are provided on the rear support shield (2), and the slag conveying system (10) is connected to the scraper (6); The adjustable shield body (1) comprises a top shield (1-1), a side shield (1-2) and a bottom shield (1-3); the side shields (1-2) are symmetrically arranged on both sides of the bottom shield (1-3); the lower part of the side shield (1-2) is hinged to the bottom shield (1-3); a lateral oil cylinder (1-4) is provided on the inner wall of the side shield (1-2); one end of the lateral oil cylinder (1-4) is connected to the side shield (1-2) and the other end is connected to the bottom shield (1-3); a top oil cylinder (1-5) is provided on the inner wall of the top shield (1-1); one end of the top oil cylinder (1-5) is connected to the top shield (1-1) and the other end is connected to the bottom shield (1-3); The top shield (1-1) is provided with a hollow slide groove, a movable shield (1-6) is slidably provided in the hollow slide groove, and the movable shield (1-6) is connected to the top shield (1-1) via a transverse oil cylinder (1-7); Two sets of support shoes (2-1) are symmetrically arranged in the rear support shield (2), and the two sets of support shoes (2-1) are connected via a tightening oil cylinder (2-2); The shovel transport device (6) comprises a bucket (6-1), a slag removal toothed disc (6-2) is provided on the lower surface of the bucket (6-1), a slag delivery channel (6-3) is provided at the rear of the bucket (6-1), and the slag delivery channel (6-3) is connected to a slag conveying system (10).

2. The novel coal tunnel fast boring machine according to claim 1 is characterized in that: The cutting device (4) comprises a base (4-1), a cantilever beam (4-2) and a cutting drum (4-3); the base (4-1) is fixed inside the adjustable shield body (1); the cantilever beam (4-2) is hinged to the base (4-1); the cutting drum (4-3) is arranged at the free end of the cantilever beam (4-2); a swing cylinder (4-4) is arranged on the cantilever beam (4-2); one end of the swing cylinder (4-4) is connected to the cantilever beam (4-2) and the other end is connected to the base (4-1); the cutting drum (4-3) is connected to a driving device arranged in the cantilever beam (4-2).

3. The novel coal tunnel fast boring machine according to claim 2 is characterized in that: The cutting drum (4-3) comprises a drum (4-5), and a plurality of cutting teeth (4-6) are provided on the drum (4-5).

4. The novel coal tunnel fast boring machine according to claim 1 is characterized in that: The top anchor drilling system (7) comprises at least two vertically arranged anchor drilling machines I (71), which are symmetrically arranged on both sides of the adjustable shield (1); the auxiliary anchor drilling system (8) comprises at least two inclined anchor drilling machines II (81), which are symmetrically arranged on both sides of the rear support shield (2).

5. The novel coal tunnel fast boring machine according to claim 1 or 4, characterized in that: The dust removal system (9) is connected to the adjustable shield body (1) via an air duct, and the air duct extends into the interior of the adjustable shield body (1).

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