Small-section coal mine tunnel rapid tunneling complete device and tunneling method

Abstract

The invention aims to disclose a complete device and method for quickly tunneling a small-section coal mine tunnel, and relates to the technical field of coal mine tunnel tunneling, the complete device comprises a conveyor, a cutting tunneling machine, a self-moving shield and an anchor rod drill carriage bestriding the conveyor; the self-moving shield temporarily supports the front part, and the cutting heading machine is driven by a first oil cylinder and moves back and forth along the first sliding rail and the second sliding rail; the self-moving shield comprises a front shield and a rear shield, a third sliding rail and a fourth sliding rail are arranged at the bottom of the front shield, and a second oil cylinder is arranged between the front shield and the rear shield; the front part moves along the third sliding rail and the fourth sliding rail, and a third oil cylinder is arranged between the front part and the self-moving shield; the cutting tunneling machine has the beneficial effects that the cutting tunneling machine is installed on the first sliding rail and the second sliding rail above the front portion of the conveyor and is driven by the first oil cylinder to conduct tunneling, the self-moving shield can temporarily support the front portion of the whole conveyor, and the conveyor and the self-moving shield alternately advance by one step pitch every time the conveyor conducts tunneling by one step pitch.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine tunnel excavation, and in particular to a complete set of rapid excavation equipment and an excavation method for a small-section coal mine tunnel. Background Art

[0002] In small-section tunnels (tunnel section width: 3600-4000mm, tunnel section height: 2400-2800mm), the working space is limited. How to balance the efficiency of excavation, coal transportation and anchoring while ensuring construction safety is a technical problem that needs to be solved.

[0003] In view of this, there is an urgent need to develop a complete set of equipment and a method for rapid excavation of small-section coal mine tunnels to overcome the above-mentioned defects. Summary of the invention

[0004] The purpose of the present invention is to disclose a complete set of equipment and a method for rapid excavation of a small-section coal mine tunnel.

[0005] The first object of the present invention is to provide a complete set of equipment for rapid excavation of small-section coal mine tunnels.

[0006] The second object of the present invention is to provide a method for rapid excavation of small-section coal mine tunnels.

[0007] To achieve the first invention objective, the present invention provides a complete set of equipment for rapid excavation of small-section coal mine tunnels, including a conveyor, a cutting and boring machine, a self-moving shield, and an anchor drilling vehicle straddling the conveyor;

[0008] The transporter includes a front part, a middle part and a tail part, the front part is provided with a first lifting wheel, the anchor drilling vehicle is straddled on the middle part, the tail part is a tilting structure and is provided with a second lifting wheel, and the self-moving shield temporarily supports the front part;

[0009] The front portion is provided with a first slide rail and a second slide rail, and the cutting and boring machine is driven by a first oil cylinder and moves forward and backward along the first slide rail and the second slide rail;

[0010] The self-moving shield comprises a front shield and a rear shield, a third slide rail and a fourth slide rail are arranged at the bottom of the front shield, a fifth slide rail and a sixth slide rail are arranged at the rear shield, and a second oil cylinder is arranged between the front shield and the rear shield;

[0011] The front portion moves along the third slide rail and the fourth slide rail, a third oil cylinder is arranged between the front portion and the self-moving shield, and a fulcrum of the third oil cylinder is arranged on the third slide rail;

[0012] The anchor drilling vehicle permanently supports the tunnel corresponding to the middle part;

[0013] The front shield moves under the joint action of the second oil cylinder and the third oil cylinder.

[0014] Preferably, the cutting and boring machine comprises a hydraulic power assembly, and the hydraulic power assembly provides driving force for the first cylinder, the second cylinder and the third cylinder.

[0015] Preferably, the first lifting wheel and the second lifting wheel are raised synchronously and drive the bottom surface of the front portion off the ground;

[0016] The first lifting wheel and the second lifting wheel are synchronously lowered and drive the bottom surface of the front portion to contact the ground.

[0017] Preferably, the first oil cylinder is arranged at the tail of the cutting and boring machine, and the fulcrum of the first oil cylinder is arranged at the front.

[0018] Preferably, the front shield comprises a first telescopic side member and a second telescopic side member, a first horizontal support portion is arranged at the bottom of the first telescopic side member, a third slide rail is arranged at the first horizontal support portion, a second horizontal support portion is arranged at the bottom of the second telescopic side member, and a fourth slide rail is arranged at the second horizontal support portion;

[0019] The rear shield includes a third telescopic side member and a fourth telescopic side member, a third horizontal support portion is arranged at the bottom of the third telescopic side member, a fifth slide rail is arranged at the third horizontal support portion, a fourth horizontal support portion is arranged at the bottom of the fourth telescopic side member, and a sixth slide rail is arranged at the fourth horizontal support portion.

[0020] Preferably, the second oil cylinder drives the rear shield and the front shield to move closer to or away from each other.

[0021] Preferably, the first telescopic side side and the second telescopic side side are respectively driven to be telescopic by a first lifting cylinder, and the third telescopic side side and the fourth telescopic side side are respectively driven to be telescopic by a second lifting cylinder.

[0022] Preferably, the anchor drilling vehicle comprises a crawler chassis and a top anchor guard assembly arranged at the front end of the crawler chassis and a side anchor guard assembly arranged at the rear end.

[0023] Preferably, the top anchor assembly comprises a first top anchor assembly and a second top anchor assembly which are symmetrically arranged;

[0024] The first top anchor assembly includes a first horizontal slide rail, a first swivel assembly, a first swing angle cylinder and a first drill arm. The first drill arm translates left and right along the first horizontal slide rail, the first swivel assembly drives the first drill arm to swing left and right, and the first swing angle cylinder drives the first drill arm to swing forward and backward.

[0025] The auxiliary anchor assembly comprises a first auxiliary anchor assembly and a second auxiliary anchor assembly which are symmetrically arranged;

[0026] The first anchor assembly includes a first lifting rail, a second rotating assembly, a second swing angle cylinder and a second drill arm. The second drill arm is lifted and lowered along the first lifting rail, the second rotating assembly drives the second drill arm to swing, and the second swing angle cylinder drives the second drill arm to swing back and forth.

[0027] Based on the same inventive principle, in order to achieve the above second inventive object, the present invention provides a method for rapid excavation of a small-section coal mine tunnel, comprising the following steps:

[0028] The cutting and boring machine excavates a step distance along the first slide rail and the second slide rail of the conveyor, and the conveyor transports the cut coal to the tail of the conveyor;

[0029] The cutting and boring machine retreats one step distance along the first slide rail and the second slide rail of the conveyor;

[0030] The transport plane rises and leaves the ground, and the transport plane moves forward one step;

[0031] The transport plane descends and contacts the ground, the self-moving shield moves forward a step, and the self-moving shield forms a temporary support;

[0032] Cutting machine advances the tunnel;

[0033] The anchor drilling vehicle straddles the conveyor and provides permanent support;

[0034] The shuttle car receives the coal at the tail.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] (1) The cutting machine is installed on the first slide rail and the second slide rail above the front of the conveyor and driven by the first cylinder for excavation. The cutting machine no longer has tracks, and the self-moving shield can temporarily support the entire front of the conveyor. For each step of excavation, the conveyor and the self-moving shield move forward one step alternately, which not only realizes temporary support, but also can transport the cut coal to the tail of the conveyor at any time.

[0037] (2) The anchor drill rides astride the middle of the conveyor. During the operation of the cutting tunnel boring machine, the anchor drill performs permanent support operations on the side and top of the tunnel at the same time, realizing the integrated operation of excavation, anchoring and transportation, and achieving high excavation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a cross-sectional schematic diagram of a complete set of equipment for rapid excavation of a small-section coal mine tunnel according to the present invention.

[0039] Figure 2 It is a top view schematic diagram of a complete set of equipment for rapid excavation of a small-section coal mine tunnel according to the present invention.

[0040] Figure 3 It is a side view schematic diagram of the transport aircraft of the present invention.

[0041] Figure 4 It is a schematic diagram of the three-dimensional structure of the self-moving shield of the present invention.

[0042] Figure 5 It is a front view schematic diagram of the self-moving shield of the present invention.

[0043] Figure 6 It is a schematic diagram of the three-dimensional structure of the self-moving shield of the present invention.

[0044] Figure 7 It is a schematic diagram of the three-dimensional structure of the anchor drilling vehicle of the present invention.

[0045] Figure 8 It is a schematic diagram of the three-dimensional structure of the anchor drilling vehicle of the present invention.

[0046] Fig. 9 It is a cross-sectional schematic diagram of a complete set of equipment for rapid excavation of a small-section coal mine tunnel according to the present invention.

[0047] Fig.10 It is a top view schematic diagram of a complete set of equipment for rapid excavation of a small-section coal mine tunnel according to the present invention.

[0048] Fig.11 It is a schematic diagram of the process of the rapid excavation method for a small-section coal mine tunnel of the present invention.

[0049] Among them, 1, transporter; 11, front; 111, first lifting wheel; 112, first slide rail; 113, second slide rail; 12, middle; 13, tail; 131, second lifting wheel; 14, shovel; 2, cutting and boring machine; 21, first oil cylinder; 3, self-moving shield; 31, front shield; 311, third slide rail; 312, fourth slide rail; 313, first telescopic side; 314, second telescopic side; 315, first horizontal support; 316, second horizontal support; 317, first lifting cylinder; 32, rear shield; 321, fifth slide rail; 322, third telescopic side; 3 23. The fourth telescopic side arm; 33. The second oil cylinder; 34. The third oil cylinder; 341. The fulcrum; 4. The anchor drilling vehicle; 41. The crawler chassis; 42. The top anchor guard assembly; 421. The first top anchor assembly; 4211. The first horizontal slide rail; 4212. The first rotary assembly; 4213. The first swing angle oil cylinder; 4214. The first drill arm; 422. The second top anchor assembly; 43. The side anchor guard assembly; 431. The first side anchor assembly; 4311. The first lifting slide rail; 4312. The second rotary assembly; 4313. The second swing angle oil cylinder; 4314. The second drill arm; 432. The second side anchor assembly. DETAILED DESCRIPTION

[0050] The present invention is described in detail below in conjunction with the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in the field based on these embodiments are all within the scope of protection of the present invention.

[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0052] The specific implementation process of the present invention is described below through multiple embodiments.

[0053] Example 1

[0054] See also Figures 1 to 10 This embodiment discloses a specific implementation method of a complete set of equipment for rapid excavation of small-section coal mine tunnels.

[0055] See also Figures 1 to 10, a complete set of rapid excavation equipment for small-section coal mine tunnels, including a conveyor 1, a cutting and boring machine 2, a self-moving shield 3 and an anchor drill 4 straddling the conveyor 1; the conveyor 1 includes a front part 11, a middle part 12 and a rear part 13, the front part 11 and the middle part 12 are both in a horizontal state, the front part 11 is provided with a first lifting wheel 111, the anchor drill 4 straddles the middle part 12, the rear part 13 is a tilting structure and is provided with a second lifting wheel 131, and the self-moving shield 3 temporarily supports the front part 11; the front part 11 is provided with a first slide rail 112 and a second slide rail 113, the cutting and boring machine 2 is driven by a first oil cylinder 21 and moves forward and backward along the first slide rail 112 and the second slide rail 113; the self-moving shield 3 includes a front shield 31 and a rear shield 32. Shield 32, a third slide rail 311 and a fourth slide rail 312 are arranged at the bottom of the front shield 31, a fifth slide rail 321 and a sixth slide rail are arranged at the rear shield 32, and a second oil cylinder 33 is arranged between the front shield 31 and the rear shield 32; first lifting wheels 111 are respectively arranged on both sides of the front part 11, and the front part 11 moves along the third slide rail 311 and the fourth slide rail 312 through the first lifting wheels 111, a third oil cylinder 34 is arranged between the front part 11 and the self-moving shield 3, and the fulcrum of the third oil cylinder 34 is arranged on the third slide rail 311; the anchor drilling vehicle 4 permanently supports the tunnel corresponding to the middle part 12; the front shield 31 moves under the joint action of the second oil cylinder 33 and the third oil cylinder 34.

[0056] Specifically, this embodiment is preferably applicable to coal mine tunnels with a cross-sectional width of 3600-4000 mm and a cross-sectional height of 2400-2800 mm, see Figures 1 to 10 The cutting and boring machine 2 includes a hydraulic power assembly, which provides driving force for the first cylinder 21, the second cylinder 33 and the third cylinder 34; the first cylinder 21 is arranged at the tail of the cutting and boring machine 2, and the fulcrum of the first cylinder 21 is arranged at the front part 11. The first cylinder 21 can adopt a parallel double cylinder and is located behind the cutting and boring machine 2. The first cylinder 21 drives the cutting and boring machine 2 to move forward and backward along the first slide rail 112 and the second slide rail 113 with the front part 11 as the fulcrum.

[0057] See also Figures 1 to 10The working principle of the conveyor 1 is as follows: the conveyor 1 includes a front part 11, a middle part 12 and a rear part 13. A first lifting wheel 111 is arranged on each side of the front part 11. The first lifting wheel 111 rides on the third slide rail 311 and the fourth slide rail 312. When the conveyor 1 needs to move forward by one step, the first lifting wheel 111 and the second lifting wheel 131 are synchronously lifted and drive the bottom surface of the front part 11 off the ground, and then the third oil cylinder 34 is started. The fulcrum 341 of the third oil cylinder 34 is arranged on the third slide rail 311. In order to maintain balance, the fourth slide rail 312 is used to lift the first lifting wheel 111 and the second lifting wheel 131. The rail 312 is also provided with a fulcrum 341, and a third oil cylinder 34 is also provided on the side of the fourth slide rail 312. The two third oil cylinders 34 synchronously drive the conveyor 1 to move forward. When moving forward, the two first lifting wheels 111 move forward along the third slide rail 311 and the second slide rail 312 in a rolling manner, and the second lifting wheel 131 moves forward along the ground in a rolling manner; after the conveyor 1 moves forward to the position, the first lifting wheel 111 and the second lifting wheel 131 synchronously descend and drive the bottom surface of the front part 11 to contact the ground, so that the conveyor 1 completes a step forward.

[0058] See also Figures 1 to 10The working principle of the self-moving shield 3 is as follows: the self-moving shield 3 includes a front shield 31 and a rear shield 32, the front shield 31 includes a first telescopic side member 313 and a second telescopic side member 314, a first horizontal support portion 315 is arranged at the bottom of the first telescopic side member 313, a third slide rail 311 is arranged at the first horizontal support portion 315, a second horizontal support portion 316 is arranged at the bottom of the second telescopic side member 314, and a fourth slide rail 312 is arranged at the second horizontal support portion 316; the rear shield 32 includes a third telescopic side member 322 and a fourth telescopic side member 323, a third horizontal support portion (not shown due to obstruction) is arranged at the bottom of the third telescopic side member 322, and the third horizontal support portion 316 is arranged at the bottom of the third telescopic side member 322. A fifth slide rail 321 is arranged on the flat support part, a fourth horizontal support part (not shown due to obstruction) is arranged at the bottom of the fourth telescopic side support 323, and a sixth slide rail is arranged on the fourth horizontal support part; the second oil cylinder 33 drives the rear shield 32 and the front shield 31 to move closer to or away from each other, a second oil cylinder 33 is arranged between the first telescopic side support 313 and the third telescopic side support 322, and another second oil cylinder 33 is arranged between the second telescopic side support 314 and the fourth telescopic side support 323; the first telescopic side support 313 and the second telescopic side support 314 are respectively driven to extend and retract by the first lifting oil cylinder 317, and two oil cylinders are arranged on the inner side of the first telescopic side support 313 to maintain balance. The first lifting cylinder 317 and two first lifting cylinders 317 are arranged inside the second telescopic side 314. The third telescopic side 322 and the fourth telescopic side 323 are respectively driven to extend and retract by the second lifting cylinders (not shown due to obstruction). To maintain balance, two second lifting cylinders are arranged inside the third telescopic side 322 and two second lifting cylinders are arranged inside the fourth telescopic side 323. The forward movement process of the self-moving shield 3 is as follows: the first lifting cylinder 317 drives the first telescopic side 313 and the second telescopic side 314 to retract and leave the top of the tunnel, the second lifting cylinder is still in the lifting state, the third telescopic side 322 and the fourth telescopic side 323 are against the top of the tunnel, The second oil cylinder 33 is started, and the second oil cylinder 33 drives the front shield 31 forward one step with the rear shield 32 as the fulcrum; the first lifting oil cylinder 317 drives the first telescopic side support 313 and the second telescopic side support 314 to rise and resist the top of the tunnel, and the second lifting oil cylinder drives the third telescopic side support 322 and the fourth telescopic side support 323 to retract and leave the top of the tunnel, and the second oil cylinder 33 is started, and the second oil cylinder 33 pulls the rear shield 32 forward one step with the front shield 31 as the fulcrum, so that the front shield 31 and the rear shield 32 are reunited together, at this time, the third slide rail 311 and the fifth slide rail 321 are connected to form one slide rail, and the fourth slide rail 312 and the sixth slide rail 322 are connected to form another slide rail.

[0059] It should be further explained that after the transport aircraft 1 moves forward one step, the third oil cylinder 34 is in an extended state. When the front shield 31 needs to move forward one step, the third oil cylinder 34 retracts while the telescopic cylinder of the second oil cylinder 33 extends. The front shield 31 moves forward one step under the combined action of the pulling force of the third oil cylinder 34 and the thrust of the second oil cylinder 33.

[0060] See also Figures 1 to 10 The working principle of the anchor drilling vehicle 4 is as follows: the anchor drilling vehicle 4 includes a crawler chassis 41 and a top anchor guard assembly 42 and a side anchor guard assembly 43 arranged at the front end of the crawler chassis 41, the top anchor guard assembly 42 includes a first top anchor assembly 421 and a second top anchor assembly 422 symmetrically arranged; the first top anchor assembly 421 includes a first horizontal slide rail 4211, a first slewing assembly 4212, a first swing cylinder 4213 and a first drilling arm 4214, the first drilling arm 4214 moves left and right along the first horizontal slide rail 4211, the first slewing assembly 42 12 drives the first drill arm 4214 to swing left and right, the first swing angle cylinder 4213 drives the first drill arm 4214 to swing back and forth, the first rotary assembly 4212 and the first swing angle cylinder 4213 adjust the anchor drilling angle of the first drill arm 4214, and the first horizontal slide rail 4211 adjusts the anchor drilling position of the first drill arm 4214; the working principle of the second top anchor assembly 422 is the same as that of the first top anchor assembly 421, and will not be repeated; the first top anchor assembly 421 and the second top anchor assembly 422 respectively perform anchor support operations on the top of the tunnel without interfering with each other, and the working efficiency is high. The side anchor assembly 43 includes a first side anchor assembly 431 and a second side anchor assembly 432 which are symmetrically arranged; the first side anchor assembly 431 includes a first lifting rail 4311, a second rotating assembly 4312, a second swing angle cylinder 4313 and a second drill arm 4314; the second drill arm 4314 is lifted and lowered along the first lifting rail 4311; the second rotating assembly 4312 drives the second drill arm 4314 to swing; the second swing angle cylinder 4313 drives the second drill arm 4314 to swing back and forth; the first lifting rail 4311 drives the second drill arm 4314 to lift and lower and perform anchor operations on the side at different heights; the second rotating assembly 4312 and the second swing angle cylinder 4313 adjust the drilling angle of the anchor, which has high flexibility; the working principle of the second side anchor assembly 432 is the same as that of the first side anchor assembly 431, which will not be repeated; the first side anchor assembly 431 and the second side anchor assembly 432 respectively perform anchor support operations on the side of the tunnel on both sides without interfering with each other, and the working efficiency is high.

[0061] See also Figures 1 to 10The working process of the complete set of rapid excavation equipment for small-section coal mine tunnels is as follows: in the first step, the cutting and boring machine 2 excavates a step along the first slide rail 112 and the second slide rail 113 of the conveyor 1, and the length of one step is 1m-1.1m. A shovel plate 14 is arranged at the front end of the front part 11 of the conveyor 1, and the shovel plate 14 of the conveyor 1 transports the cut coal to the tail part 13 of the conveyor 1; specifically, in the initial state, the cutting and boring machine 2 is located as a whole in the self-moving shield 3, and the cutting and boring machine 2 is driven by the first oil cylinder 21 to move forward and advance along the first slide rail 112 and the second slide rail 113, and the advanced coal is transported to the tail part 13 by the conveyor 1; in the second step, the cutting and boring machine 2 excavates a step along the first slide rail 112 and the second slide rail 113, and the advanced coal is transported to the tail part 13 by the conveyor 1; The advancer 2 retreats one step along the first slide rail 112 and the second slide rail 112 of the conveyor 1; specifically, the cutting and boring machine 2 advances one step and then retreats into the self-moving shield 3; in the third step, the conveyor 1 rises and leaves the ground, and the conveyor 1 moves forward one step; specifically, there is a space for accommodating the front part 11 between the first horizontal support part 315 and the second horizontal support part 316, and the two first lifting wheels 111 ride on the third slide rail 311 and the fourth slide rail 312 respectively. When the first lifting wheel 111 and the second lifting wheel 131 are synchronously lifted and drive the bottom surface of the front part 11 to leave the ground, the third oil cylinder 34 is started, and the two third oil cylinders 34 are synchronously driven In the fourth step, the conveyor 1 is moved forward by one step; in the fourth step, the conveyor descends and contacts the ground, the self-moving shield moves forward by one step, and the self-moving shield forms a temporary support; specifically, after the conveyor 1 moves forward to the right position, the first lifting wheel 111 and the second lifting wheel 131 are synchronously lowered and drive the bottom surface of the front part 11 to contact the ground, so that the conveyor 1 completes one step forward, and the self-moving shield 3 moves forward as follows: the first lifting cylinder 317 drives the first telescopic side support 313 and the second telescopic side support 314 to retract and leave the top of the roadway, the second lifting cylinder is still in the lifting state, the third telescopic side support 322 and the fourth telescopic side support 323 are against the top of the roadway, and the second lifting cylinder is started The first lifting cylinder 317 drives the first telescopic side rail 313 and the second telescopic side rail 314 to rise and resist the top of the tunnel, and the second lifting cylinder drives the third telescopic side rail 322 and the fourth telescopic side rail 323 to retract and leave the top of the tunnel, and starts the second cylinder 33. The second cylinder 33 pulls the rear shield 32 forward one step with the front shield 31 as the fulcrum, so that the front shield 31 and the rear shield 32 are reunited. At this time, the third slide rail 311 and the fifth slide rail 321 are connected to form one slide rail, and the fourth slide rail 312 and the sixth slide rail are connected to form another slide rail.

[0062] It needs to be further explained that the anchor drilling vehicle 4 straddles the middle part 12, the conveyor 1 and the anchor drilling vehicle 4 can operate without interfering with each other, the self-moving shield 3 forms temporary support for the operating personnel and the cutting and boring machine 2, and the subsequent anchor drilling vehicle 4 performs permanent support operations on the top and side of the tunnel, realizing the integrated operation of excavation, anchoring and transportation as a whole, and achieving high excavation efficiency.

[0063] Example 2

[0064] See also Fig.11 This embodiment discloses a specific implementation method of a small-section coal mine tunnel rapid excavation method.

[0065] The method for rapid excavation of a small-section coal mine tunnel comprises the following steps:

[0066] S1: The cutting tunneling machine excavates a step distance along the first slide rail and the second slide rail of the conveyor, and the conveyor transports the cut coal to the tail of the conveyor; specifically, in the initial state, the cutting tunneling machine 2 is located as a whole in the self-moving shield 3, and the cutting tunneling machine 2 is driven by the first oil cylinder 21 to move forward along the first slide rail 112 and the second slide rail 113 and advance, and the advanced coal is transported to the tail 13 by the conveyor 1.

[0067] S2: The cutting and boring machine retreats one step along the first slide rail and the second slide rail of the conveyor; specifically, the cutting and boring machine 2 advances one step and then retreats into the self-moving shield 3.

[0068] S3: the conveyor is lifted up and leaves the ground, and the conveyor moves forward one step; specifically, the first lifting wheel 111 and the second lifting wheel 131 are lifted up synchronously and drive the bottom surface of the front part 11 to leave the ground, and then the third oil cylinder 34 is started, and the two third oil cylinders 34 synchronously drive the conveyor 1 to move forward one step;

[0069] S4: the conveyor 1 descends and contacts the ground, the self-moving shield advances one step, and the self-moving shield forms a temporary support; specifically, after the conveyor 1 advances to the right position, the first lifting wheel 111 and the second lifting wheel 131 synchronously descend and drive the bottom surface of the front part 11 to contact the ground, so that the conveyor 1 completes one step forward, and the self-moving shield 3 advances as follows: the first telescopic side support 313 and the second telescopic side support 314 retract and leave the top of the tunnel, the second lifting cylinder 327 is still in the lifting state, and the third telescopic side support 323 and the fourth telescopic side support 32 The second oil cylinder 33 and the third oil cylinder 34 are started, and the second oil cylinder 33 drives the front shield 31 forward one step with the rear shield 32 as a fulcrum; the first lifting oil cylinder 317 drives the first telescopic side 313 and the second telescopic side 314 to rise and press against the top of the tunnel, and the second lifting oil cylinder drives the third telescopic side 323 and the fourth telescopic side 324 to retract and leave the top of the tunnel, and the second oil cylinder 33 is started, and the second oil cylinder 33 pulls the rear shield 32 forward one step with the front shield 31 as a fulcrum, so that the front shield 31 and the rear shield 32 are reunited.

[0070] S5: The cutting and boring machine advances; specifically, the cutting and boring machine 2 advances one step along the first slide rail 112 and the second slide rail 113 of the conveyor 1; steps S1-S5 are performed in a cycle.

[0071] S6: The anchor drill vehicle straddles the conveyor and provides permanent support; specifically, the anchor drill vehicle 4 straddles the middle portion 12, the conveyor 1 and the anchor drill vehicle 4 can operate without interfering with each other, the self-moving shield 3 forms temporary support for the operator and the cutting and boring machine 2, and the subsequent anchor drill vehicle 4 performs permanent support operations on the top and side of the tunnel, thus realizing integrated excavation, anchoring and transportation operations as a whole, and achieving high excavation efficiency;

[0072] S7: The shuttle car receives the coal at the tail. Specifically, a driving motor and a conveyor are respectively arranged on both sides of the tail 13 of the conveyor 1. The hanging plate conveyor of the conveyor 1 is driven by dual motors, so that the coal can be transported with greater power.

[0073] The method for rapid excavation of a small-section coal mine tunnel disclosed in this embodiment adopts the complete set of rapid excavation equipment for a small-section coal mine tunnel described in the embodiment, which has the same technical solutions as those in Example 1. Please refer to Example 1 and will not be repeated here.

Claims

1. A complete set of equipment for rapid excavation of small-section coal mine tunnels, characterized in that: It includes a conveyor, a cutting and boring machine, a self-moving shield and an anchor drilling vehicle straddling the conveyor; The transporter includes a front part, a middle part and a tail part, the front part is provided with a first lifting wheel, the anchor drilling vehicle is straddled on the middle part, the tail part is a tilting structure and is provided with a second lifting wheel, and the self-moving shield temporarily supports the front part; The front portion is provided with a first slide rail and a second slide rail, and the cutting and boring machine is driven by a first oil cylinder and moves forward and backward along the first slide rail and the second slide rail; The self-moving shield comprises a front shield and a rear shield, a third slide rail and a fourth slide rail are arranged at the bottom of the front shield, a fifth slide rail and a sixth slide rail are arranged at the rear shield, and a second oil cylinder is arranged between the front shield and the rear shield; The front portion moves along the third slide rail and the fourth slide rail, a third oil cylinder is arranged between the front portion and the self-moving shield, and a fulcrum of the third oil cylinder is arranged on the third slide rail; The anchor drilling vehicle permanently supports the tunnel corresponding to the middle part; The front shield moves under the joint action of the second oil cylinder and the third oil cylinder.

2. The small-section coal mine tunnel rapid excavation complete set of equipment as claimed in claim 1 is characterized in that: The cutting and boring machine comprises a hydraulic power assembly, and the hydraulic power assembly provides driving force for the first oil cylinder, the second oil cylinder and the third oil cylinder.

3. The small-section coal mine tunnel rapid excavation complete set of equipment as claimed in claim 1, characterized in that: The first lifting wheel and the second lifting wheel are raised synchronously and drive the bottom surface of the front portion to leave the ground; The first lifting wheel and the second lifting wheel are synchronously lowered and drive the bottom surface of the front portion to contact the ground.

4. The small-section coal mine tunnel rapid excavation complete set of equipment as claimed in claim 1, characterized in that: The first oil cylinder is arranged at the tail of the cutting and boring machine, and the fulcrum of the first oil cylinder is arranged at the front.

5. The small-section coal mine tunnel rapid excavation complete set of equipment as described in any one of claims 1 to 4, characterized in that: The front shield comprises a first telescopic side member and a second telescopic side member, a first horizontal support portion is arranged at the bottom of the first telescopic side member, a third slide rail is arranged at the first horizontal support portion, a second horizontal support portion is arranged at the bottom of the second telescopic side member, and a fourth slide rail is arranged at the second horizontal support portion; The rear shield includes a third telescopic side member and a fourth telescopic side member, a third horizontal support portion is arranged at the bottom of the third telescopic side member, a fifth slide rail is arranged at the third horizontal support portion, a fourth horizontal support portion is arranged at the bottom of the fourth telescopic side member, and a sixth slide rail is arranged at the fourth horizontal support portion.

6. The small-section coal mine tunnel rapid excavation complete set of equipment as claimed in claim 5, characterized in that: The second oil cylinder drives the rear shield and the front shield to move closer to or away from each other.

7. The small-section coal mine tunnel rapid excavation complete set of equipment as claimed in claim 5, characterized in that: The first telescopic side side and the second telescopic side side are respectively driven to extend and retract by a first lifting cylinder, and the third telescopic side side and the fourth telescopic side side are respectively driven to extend and retract by a second lifting cylinder.

8. The small-section coal mine tunnel rapid excavation complete set of equipment as claimed in claim 5, characterized in that: The anchor drilling vehicle comprises a crawler chassis, a top anchor guard assembly arranged at the front end of the crawler chassis, and a side anchor guard assembly arranged at the rear end.

9. The small-section coal mine tunnel rapid excavation complete set device as claimed in claim 8, characterized in that: The top anchor assembly comprises a first top anchor assembly and a second top anchor assembly which are symmetrically arranged; The first top anchor assembly includes a first horizontal slide rail, a first swivel assembly, a first swing angle cylinder and a first drill arm. The first drill arm translates left and right along the first horizontal slide rail, the first swivel assembly drives the first drill arm to swing left and right, and the first swing angle cylinder drives the first drill arm to swing forward and backward. The auxiliary anchor assembly comprises a first auxiliary anchor assembly and a second auxiliary anchor assembly which are symmetrically arranged; The first anchor assembly includes a first lifting rail, a second rotating assembly, a second swing angle cylinder and a second drill arm. The second drill arm is lifted and lowered along the first lifting rail, the second rotating assembly drives the second drill arm to swing, and the second swing angle cylinder drives the second drill arm to swing back and forth.

10. A method for rapid excavation of a small-section coal mine tunnel, characterized in that: The following steps are involved: The cutting and boring machine excavates a step distance along the first slide rail and the second slide rail of the conveyor, and the conveyor transports the cut coal to the tail of the conveyor; The cutting and boring machine retreats one step distance along the first slide rail and the second slide rail of the conveyor; The transport plane rises and leaves the ground, and the transport plane moves forward one step; The transport plane descends and contacts the ground, the self-moving shield moves forward a step, and the self-moving shield forms a temporary support; Cutting machine advances the tunnel; The anchor drilling vehicle straddles the conveyor and provides permanent support; The shuttle car receives the coal at the tail.

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