阅读说明：本技术 一种用于竖井的连续出渣装置及方法 (Continuous slag discharging device and method for vertical shaft ) 是由 贾连辉 叶蕾 赵子辉 张朋真 赵飞 肖晶娜 付玉龙 徐光亿 庞文卓 杨璐 吕展鹏 于 2021-09-08 设计创作，主要内容包括：本发明提供了一种用于竖井的连续出渣装置及方法,所述用于竖井的连续出渣装置包括输送系统(8)、储链装置(3)和锁紧装置(2),储链装置(3)含有第一改向定轴组(301)、第二改向定轴组(302)和改向动轴组(303),输送系统(8)含有第一输送链段(804)和第二输送链段(805),锁紧装置(2)能够锁紧固定第一输送链段(804)和第二输送链段(805)。所述用于竖井的连续出渣装置及方法可以随着主机不断向下掘进,保证出渣与主机同步运行,输送链具有自动伸缩功能,具有储链的能力。同时,整个输送系统具有自适应张紧系统,保证其在运行过程中的张紧力。(The invention provides a continuous slag discharging device and a continuous slag discharging method for a vertical shaft, wherein the continuous slag discharging device for the vertical shaft comprises a conveying system (8), a chain storage device (3) and a locking device (2), the chain storage device (3) comprises a first direction-changing fixed shaft group (301), a second direction-changing fixed shaft group (302) and a direction-changing movable shaft group (303), the conveying system (8) comprises a first conveying chain section (804) and a second conveying chain section (805), and the locking device (2) can lock and fix the first conveying chain section (804) and the second conveying chain section (805). The continuous slag discharging device and the continuous slag discharging method for the vertical shaft can tunnel downwards along with the host machine continuously, the synchronous operation of slag discharging and the host machine is guaranteed, and the conveying chain has an automatic telescopic function and a chain storage capacity. Meanwhile, the whole conveying system is provided with a self-adaptive tensioning system, so that the tensioning force of the conveying system in the operation process is ensured.)

1. A continuous slag tapping device for a vertical shaft is characterized by comprising a conveying system (8), a chain storage device (3) and a locking device (2), wherein the chain storage device (3) comprises a first redirection fixed shaft group (301), a second redirection fixed shaft group (302) and a redirection movable shaft group (303), the conveying system (8) comprises a conveying chain (801), the conveying chain (801) comprises a chain (802) and a chain bucket (803), the chain (802) sequentially bypasses the first redirection fixed shaft group (301), the redirection movable shaft group (303) and the second redirection fixed shaft group (302), two adjacent chain links (806) in the chain (802) are detachably connected, the conveying chain (801) between the redirection movable shaft group (303) and the first redirection fixed shaft group (301) is a first conveying chain segment (804), and the conveying chain (801) between the redirection movable shaft group (303) and the second redirection fixed shaft group (302) is a second conveying chain segment (805), the direction changing movable shaft group (303) can move and reduce the total length of the first conveying chain segment (804) and the second conveying chain segment (805), and the locking device (2) can lock and fix the first conveying chain segment (804) and the second conveying chain segment (805).

2. The continuous tapping device for the shaft according to claim 1, wherein the first redirecting fixed shaft group (301), the second redirecting fixed shaft group (302) and the redirecting movable shaft group (303) are arranged in an isosceles triangle, and the distance from the redirecting movable shaft group (303) to the first redirecting fixed shaft group (301) is equal to the distance from the redirecting movable shaft group (303) to the second redirecting fixed shaft group (302).

3. The continuous slag tapping device for the shaft according to claim 1, wherein the first direction-changing fixed shaft group (301) and the second direction-changing fixed shaft group (302) are arranged up and down, and the direction-changing movable shaft group (303) is positioned at the front side, the rear side, the left side or the right side of the first direction-changing fixed shaft group (301).

4. The continuous slag tapping device for the shaft according to claim 1, wherein the first direction-changing fixed shaft group (301) and the second direction-changing fixed shaft group (302) are arranged left and right, and the direction-changing movable shaft group (303) is positioned at the front side, the rear side, the upper side or the lower side of the first direction-changing fixed shaft group (301).

5. The continuous slag tapping device for the shaft according to claim 3, wherein the chain storage device (3) further comprises a chain storage barrel (304), the chain storage barrel (304) is in a horizontal state, the direction-changing movable shaft group (303) is positioned in the chain storage barrel (304), a horizontal guide rail (305) is arranged in the chain storage barrel (304), and the direction-changing movable shaft group (303) can move along the horizontal guide rail (305).

6. The continuous tapping device for the shaft according to claim 5, further comprising a frame (5), wherein the chain storage barrel (304) is fixed on the frame (5), the first redirecting fixed shaft group (301) and the second redirecting fixed shaft group (302) are both positioned outside the chain storage barrel (304), and the first redirecting fixed shaft group (301) and the second redirecting fixed shaft group (302) are both fixed relative to the frame (5).

7. The continuous tapping device for the shaft according to claim 6, wherein the continuous tapping device for the shaft further comprises an adaptive tensioning device (4), the adaptive tensioning device (4) comprises a fixed pulley (401), a lifting rope (402) and a tensioning balancing weight (403), the direction-changing movable shaft group (303) is connected with the horizontal guide rail (305) through the horizontal moving frame (306), and the adaptive tensioning device (4) can enable the first conveying chain section (804) and the second conveying chain section (805) to be in a tensioning state.

8. The continuous slag tapping device for the shaft is characterized in that a chain connecting port (307) is formed in the upper portion of the chain storage barrel (304), a section of a conveying chain (801) to be connected can penetrate through the chain connecting port (307) to enter the chain storage barrel (304), and the movable shaft group (303), the chain connecting port (307), the locking device (2) and the first direction-changing fixed shaft group (301) are arranged in sequence along the horizontal direction.

9. The continuous tapping device for a shaft according to claim 1, wherein the locking device (2) comprises an insertion rod (201), when the locking device (2) is in a locking state, the insertion rod (201) is inserted into the chain link (806) of the first conveying chain segment (804) and the chain link (806) of the second conveying chain segment (805) simultaneously, and the insertion rod (201) is fixed relative to the first redirecting fixed shaft group (301) and the second redirecting fixed shaft group (302); when the locking device (2) is in an unlocked state, the plunger (201) is simultaneously disengaged from the links (806) of the first conveying chain segment (804) and the links (806) of the second conveying chain segment (805).

10. A continuous tapping method for a shaft, which is characterized in that the continuous tapping method for a shaft employs the continuous tapping apparatus for a shaft of claim 1, and comprises the steps of:

step 1, moving a redirected movable shaft group (303) along a first direction, and reducing the total length of a first conveying chain segment (804) and a second conveying chain segment (805);

step 2, locking and fixing a first conveying chain segment (804) and a second conveying chain segment (805) by a locking device (2);

step 3, disconnecting the first conveying chain section (804) between the locking device (2) and the redirection movable shaft group (303), and connecting a section of conveying chain (801) at the disconnected position of the first conveying chain section (804); or disconnecting the second conveying chain section (805) between the locking device (2) and the redirection movable shaft group (303), and connecting a section of conveying chain (801) at the disconnected position of the second conveying chain section (805);

the direction-changing movable shaft group (303) moves along a second direction, and the second direction is opposite to the first direction;

and 4, unlocking the first conveying chain section (804) and the second conveying chain section (805) by the locking device (2).

Technical Field

The invention relates to the field of tunnel excavation equipment, in particular to a continuous slag discharging device for a vertical shaft and a continuous slag discharging method for the vertical shaft.

Background

In the current shaft construction process, slag tapping is a key factor influencing the construction efficiency. The existing dry-type slag tapping technology comprises bucket slag tapping, vacuum slag tapping, grab bucket slag tapping and the like. For the slag discharge of the bucket and the grab bucket, the operation is simple, but the slag discharge is discontinuous, and the efficiency is low. The problems of pipe blockage caused by slag particles during vacuum slag discharge are frequent, the energy consumption is high, and the efficiency is low. How to continuously and efficiently finish the slag tapping of the vertical shaft is a serious problem which needs to be solved urgently.

Disclosure of Invention

In order to realize continuous slag tapping in the downward excavation process of the vertical shaft, the invention aims to provide the continuous slag tapping device and the method for the vertical shaft, the continuous slag tapping device and the method for the vertical shaft can continuously tunnel downwards along with a host machine, the synchronous operation of slag tapping and the host machine is ensured, and a conveying chain has an automatic telescopic function and has the capacity of storing the chain. Meanwhile, the whole conveying system is provided with a self-adaptive tensioning system, so that the tensioning force of the conveying system in the operation process is ensured.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a continuous slag discharging device for a vertical shaft comprises a conveying system, a chain storage device and a locking device, wherein the chain storage device comprises a first direction-changing fixed shaft group, a second direction-changing fixed shaft group and a direction-changing movable shaft group, the conveying system comprises a conveying chain, the conveying chain comprises a chain and a chain bucket, the chain sequentially bypasses the first direction-changing fixed shaft group, the direction-changing movable shaft group and the second direction-changing fixed shaft group, two adjacent chain links in the chain are detachably connected, the conveying chain between the direction-changing movable shaft group and the first direction-changing fixed shaft group is a first conveying chain segment, the conveying chain between the direction-changing movable shaft group and the second direction-changing fixed shaft group is a second conveying chain segment, the direction-changing movable shaft group can move and enable the total length of the first conveying chain segment and the second conveying chain segment to be reduced, and the locking device can lock and fix the first conveying chain segment and the second conveying chain segment.

A continuous deslagging method for a shaft, wherein the continuous deslagging method for the shaft adopts the continuous deslagging device for the shaft, and the continuous deslagging method for the shaft comprises the following steps:

step 1, moving a direction-changing movable shaft group along a first direction, and reducing the total length of a first conveying chain section and a second conveying chain section;

step 2, locking and fixing the first conveying chain segment and the second conveying chain segment by a locking device;

step 3, disconnecting the first conveying chain segment between the locking device and the direction-changing movable shaft group, and connecting a section of conveying chain at the disconnected position of the first conveying chain segment; or disconnecting the second conveying chain segment between the locking device and the redirection movable shaft group, and connecting a section of conveying chain at the disconnected position of the second conveying chain segment;

the direction-changing movable shaft group moves along a second direction, and the second direction is opposite to the first direction;

and 4, unlocking the first conveying chain segment and the second conveying chain segment by the locking device.

The invention has the beneficial effects that:

1. can realize continuous and efficient slag tapping in the process of shaft tunneling.

2. The underground structure is simple, the occupied space is small, the space is saved for the host, the underground failure rate is reduced, and the safety and the high efficiency of the construction process are guaranteed.

3. The conveying chain on the ground is arranged in the shell, so that dust of dry slag is effectively inhibited, and the environment is minimized.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

Fig. 1 is a schematic view of the continuous tapping unit for shafts according to the present invention in example 1.

Fig. 2 is a schematic view of the locking device for locking and fixing the conveyor chain in embodiment 1.

FIG. 3 is a schematic view of the locking device in example 1 for locking and fixing the first conveyor segment and the second conveyor segment.

Fig. 4 is a schematic view of the first conveyor segment being broken in example 1.

FIG. 5 is a schematic illustration of the attachment of a new length of conveyor chain at the first conveyor chain segment of example 1.

Fig. 6 is a schematic positional relationship diagram of the first direction-changing fixed shaft group, the second direction-changing fixed shaft group, and the direction-changing movable shaft group in embodiment 2.

1. A drive section; 2. a locking device; 3. a chain storage device; 4. a self-adaptive tensioning device; 5. a frame; 6. a tail wheel part; 7. a material collecting device; 8. a delivery system; 9. a host; 10. a well wall;

101. a transmission device; 102. a discharge opening;

201. inserting a rod;

301. a first direction-changing fixed shaft group; 302. a second direction-changing fixed shaft group; 303. changing direction to a movable shaft group; 304. a chain storage barrel; 305. a horizontal guide rail; 306. a horizontal moving frame; 307. a linking port; 308. a slag removal port;

401. a fixed pulley; 402. a lifting rope; 403. tensioning a balancing weight;

601. a tail wheel redirection shaft group; 602. a vertical moving rack; 603. a machine tail balancing weight;

701. a feeding port;

801. a conveyor chain; 802. a chain; 803. a chain bucket; 804. a first conveying segment; 805. a second conveying segment; 806. a chain link;

901. and (7) docking the platform.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

Example 1

A continuous slag tapping device for a shaft comprises a conveying system 8, a chain storage device 3 and a locking device 2, wherein the chain storage device 3 comprises a first direction-changing fixed shaft group 301, a second direction-changing fixed shaft group 302 and a direction-changing movable shaft group 303, the conveying system 8 comprises a conveying chain 801, the conveying chain 801 comprises a chain 802 and a chain bucket 803, the chain 802 sequentially bypasses the first direction-changing fixed shaft group 301, the direction-changing movable shaft group 303 and the second direction-changing fixed shaft group 302, two adjacent chain links 806 in the chain 802 are detachably connected, one section of the conveying chain 801 between the direction-changing movable shaft group 303 and the first direction-changing fixed shaft group 301 is a first conveying chain section 804, one section of the conveying chain 801 between the direction-changing movable shaft group 303 and the second direction-changing fixed shaft group 302 is a second conveying chain section 805, the direction-changing movable shaft group 303 can move and the total length of the first conveying chain section 804 and the second conveying chain section 805 is reduced, the locking device 2 is capable of locking and securing the first conveyor segment 804 and the second conveyor segment 805 as shown in fig. 1.

In this embodiment, the axes of the first direction-changing fixed shaft group 301, the axes of the second direction-changing fixed shaft group 302 and the axes of the direction-changing movable shaft group 303 are parallel to each other, the first direction-changing fixed shaft group 301, the second direction-changing fixed shaft group 302 and the direction-changing movable shaft group 303 are arranged in an isosceles triangle, that is, the distance from the direction-changing movable shaft group 303 to the first direction-changing fixed shaft group 301 is equal to the distance from the direction-changing movable shaft group 303 to the second direction-changing fixed shaft group 302, and the length of the first conveying chain segment 804 is equal to the length of the second conveying chain segment 805.

The first redirecting fixed shaft group 301, the second redirecting fixed shaft group 302 and the redirecting movable shaft group 303 are basically the same in structure as pulleys, the first redirecting fixed shaft group 301 and the second redirecting fixed shaft group 302 correspond to fixed pulleys, and the redirecting movable shaft group 303 corresponds to a movable pulley. The position of the first redirecting fixed shaft group 301 and the position of the second redirecting fixed shaft group 302 are fixed relative to the ground, and the position of the redirecting movable shaft group 303 can move relative to the ground.

In this embodiment, the first direction-changing fixed shaft group 301 and the second direction-changing fixed shaft group 302 are disposed up and down, and the direction-changing movable shaft group 303 is located at the front side, the rear side, the left side or the right side of the first direction-changing fixed shaft group 301. As shown in fig. 1, the direction-changing movable shaft group 303 is located on the left side of the first direction-changing fixed shaft group 301. The first conveying chain segment 804 is arranged up and down in parallel with the second conveying chain segment 805.

In this embodiment, the chain storage device 3 further includes a chain storage barrel 304, the chain storage barrel 304 is in a horizontal state, the center line of the chain storage barrel 304 is arranged along the left-right direction, the direction-changing movable shaft group 303 is located in the chain storage barrel 304, a horizontal guide rail 305 is arranged in the chain storage barrel 304, and the direction-changing movable shaft group 303 can move left and right along the horizontal guide rail 305, as shown in fig. 1. The first redirecting fixed shaft group 301 and the second redirecting fixed shaft group 302 are positioned outside the chain storage barrel 304.

In this embodiment, the continuous slag tapping device for the shaft further includes a frame 5, the frame 5 is located outside the shaft, the frame 5 is fixed on the ground, the chain storage barrel 304 is fixed on the frame 5, the first direction-changing fixed shaft group 301 and the second direction-changing fixed shaft group 302 are both located outside the chain storage barrel 304, and the first direction-changing fixed shaft group 301 and the second direction-changing fixed shaft group 302 are both fixed relative to the frame 5.

In this embodiment, the continuous slag tapping device for the shaft further comprises an adaptive tensioning device 4, the adaptive tensioning device 4 comprises a fixed pulley 401, a lifting rope 402 and a tensioning balancing weight 403, the direction-changing movable shaft set 303 is connected with the horizontal guide rail 305 through the horizontal moving frame 306, and the adaptive tensioning device 4 can enable the first conveying chain segment 804 and the second conveying chain segment 805 to be in a tensioning state.

Specifically, one end of the lifting rope 402 is connected and fixed with the tensioning balance weight block 403, one end of the lifting rope 402 is connected and fixed with the horizontal moving frame 306, and due to the action of gravity, the tensioning balance weight block 403 pulls the horizontal moving frame 306 and the direction-changing movable shaft group 303 through the lifting rope 402, so that the direction-changing movable shaft group 303 has a movement trend away from the first direction-changing fixed shaft group 301 and the second direction-changing fixed shaft group 302, and the first conveying chain segment 804 and the second conveying chain segment 805 are in a tensioning state (i.e., a tensioning state).

In this embodiment, the chain connecting port 307 is arranged at the upper part of the chain storage barrel 304, a section of the conveying chain 801 to be connected can enter the chain storage barrel 304 through the chain connecting port 307, and the direction-changing movable shaft group 303, the chain connecting port 307, the locking device 2 and the first direction-changing fixed shaft group 301 are sequentially arranged along the horizontal direction. Preferably, the distance from the locking device 2 to the first direction-changing fixed shaft group 301 is far smaller than the distance from the locking device 2 to the direction-changing movable shaft group 303, and the distance from the linking port 307 to the first direction-changing fixed shaft group 301 is smaller than the distance from the linking port 307 to the direction-changing movable shaft group 303. A cover plate can be arranged outside the chain connecting port 307, the cover plate can be hinged with the chain storage barrel 304, and the lower part of the chain storage barrel 304 can be provided with a slag removing port 308.

In the embodiment, the locking device 2 comprises an insertion rod 201, when the locking device 2 is in a locking state, the insertion rod 201 is simultaneously inserted into a chain link 806 of the first conveying chain segment 804 and a chain link 806 of the second conveying chain segment 805, and the insertion rod 201 is fixed relative to both the first direction-changing fixed shaft group 301 and the second direction-changing fixed shaft group 302, as shown in fig. 2; when the locking device 2 is in the unlocked state, the plunger 201 disengages both the link 806 of the first conveyor segment 804 and the link 806 of the second conveyor segment 805. An upstream upper socket and a downstream lower socket can be arranged on the chain storage barrel 304, and the inserted link 201 can pass through the upper socket and the lower socket, so that the position of the inserted link 201 is fixed.

The advantage of using the rod 201 to lock the first conveyor chain segment 804 and the second conveyor chain segment 805 is that it is easy to insert a thin iron rod into the chain link of the bicycle chain, so that neither the chain nor the sprocket of the bicycle can rotate. The locking device 2 may have other implementations, for example, a clamp structure, and the locking device 2 includes two clamps that can simultaneously clamp and fix the first conveying chain section 804 and the second conveying chain section 805.

In this embodiment, the continuous slag tapping device for the shaft comprises a collecting device 7, the collecting device 7 is sleeved outside the conveying chain 801, and a feeding port 701 is arranged on the collecting device 7. The lower part of the aggregate device 7 is internally provided with a tail wheel part 6, the tail wheel part 6 comprises a tail wheel redirection shaft group 601, and the conveying chain 801 bypasses the tail wheel redirection shaft group 601. The aggregate device 7 is fixedly connected with the host machine 9 through the docking platform 901, and the aggregate device 7 can synchronously move downwards along with the host machine 9.

When the main machine 9 is in the process of tunneling downwards, large vibration and impact can be generated. The tail wheel bend shaft group 601 is connected with the material collecting device 7 through the vertical moving frame 602, the vertical moving frame 602 is provided with a buffer cushion block, the vertical moving frame 602 is connected with a tail balancing weight 603, and the micro-adjustment of the tail wheel bend shaft group 601 on the vertical moving frame 602 reduces the impact of a host, maintains the stability of the whole ground continuous slag discharging device, and reduces the failure rate of equipment.

In the embodiment, the continuous slag tapping device for the shaft comprises a driving part 1, the driving part 1 is positioned above a material collecting device 7, the driving part 1 comprises a transmission device 101 and a discharge opening 102, the driving part 1 can drive a conveying chain 801 of a conveying system 8 to rotate clockwise or anticlockwise, as shown in fig. 1, the driving part 1 is fixed relative to the ground, the driving part 1 is positioned above a first direction-changing fixed shaft group 301, and the material collecting device 7 and a tail wheel part 6 are both positioned below a second direction-changing fixed shaft group 302.

A continuous tapping method for a shaft using the above-described continuous tapping apparatus for a shaft is described below, the continuous tapping method for a shaft comprising the steps of:

step 1, moving the direction-changing movable shaft group 303 along a first direction, and reducing the total length of a first conveying chain section 804 and a second conveying chain section 805;

specifically, the main machine 9 excavates downwards in the shaft, the collecting device 7 moves downwards synchronously with the main machine 9, both the collecting device 7 and the main machine 9 are located below the ground in the shaft wall 10, the excavated waste soil enters the chain bucket 803 of the collecting device 7 from the material inlet 701, the driving part 1 drives the conveying chain 801 of the conveying system 8 to rotate anticlockwise, the conveying system 8 discharges the waste soil from the material outlet 102, the movable shaft group 303 moves rightwards from the starting point position of the left end to the end point position of the right end along the horizontal guide rail 305 (the first direction is a direction from left to right), and the self-adaptive tensioning device 4 enables the first conveying chain segment 804 and the second conveying chain segment 805 to be in a tensioned state all the time to complete a downward excavation stroke.

Step 2, the locking device 2 locks and fixes the first conveying chain segment 804 and the second conveying chain segment 805, namely, the locking device 2 is in a locking state;

specifically, the insert rod 201 is inserted into the chain link 806 of the first conveying chain segment 804 and the chain link 806 of the second conveying chain segment 805 at the same time, the insert rod 201 is fixedly connected with the chain storage barrel 304, if the insert rod 201 also simultaneously passes through the upper socket and the lower socket on the chain storage barrel 304, the insert rod 201 is in an upright fixed state, and the conveying chain 801 cannot rotate anticlockwise or clockwise any more, as shown in fig. 2 and 3.

Step 3, disconnecting the first conveying chain section 804 between the locking device 2 and the direction-changing movable shaft group 303, and connecting a section of conveying chain 801 at the disconnected position of the first conveying chain section 804; or the second conveying chain section 805 between the locking device 2 and the redirection movable shaft group 303 is disconnected, and a section of conveying chain 801 is connected at the disconnected position of the second conveying chain section 805; the direction-changing movable shaft group 303 moves along a second direction, and the second direction is opposite to the first direction;

specifically, for example, due to the detachable connection between two adjacent chain links in the chain, the first conveying chain segment 804 between the locking device 2 and the direction-changing movable shaft set 303 is disconnected, and a new section of conveying chain 801 is additionally connected at the disconnected position of the first conveying chain segment 804, when the new section of conveying chain 801 is connected, the new section of conveying chain 801 passes through the chain connecting port 307, and the direction-changing movable shaft set 303 returns to the starting position of the left end along the horizontal guide rail 305 from the terminal point of the right end (the second direction is a direction from right to left), and the length of the new section of conveying chain 801 should ensure that the direction-changing movable shaft set 303 can return to the starting position of the left end from the terminal point of the right end left end right end left end right end left end right end left end right end left end right end left end right end left end right end left end right end left end right end left end right end left end right end left end right end left end right end left end right end left end right end left end right end left end right end left end right end left end right end left end right end left end right end left end right end left end right end. During and after the connection of the new length of conveyor chain 801, the adaptive tensioning device 4 can keep the first conveyor chain segment 804 and the second conveyor chain segment 805 in tension at all times, as shown in fig. 4 and 5.

Step 4, the locking device 2 unlocks the first conveying chain segment 804 and the second conveying chain segment 805, namely, the locking device 2 is in an unlocked state;

specifically, the plunger 201 is disengaged from the chain link 806 of the first conveying chain segment 804 and the chain link 806 of the second conveying chain segment 805 at the same time, the conveying chain 801 can rotate counterclockwise again, and the re-direction moving shaft set 303 can also move along the horizontal guide rail 305.

The continuous slag tapping device for the vertical shaft and the working method thereof can realize continuous slag tapping in one downward excavation stroke. The chain connection process in the step 3 is usually arranged to be carried out when the main machine 9 is overhauled, and the steps 1 to 4 are repeated for a plurality of times, so that the continuous downward excavation and the continuous slag tapping in the whole shaft excavation process can be realized.

For convenience of understanding and description, the absolute positional relationship is used in the present invention, and unless otherwise specified, the term "up" indicates the upper direction in fig. 1, the term "down" indicates the lower direction in fig. 1, the term "left" indicates the left direction in fig. 1, the term "right" indicates the right direction in fig. 1, the term "front" indicates a direction perpendicular to the paper surface of fig. 1 and directed to the inside of the paper surface, and the term "rear" indicates a direction perpendicular to the paper surface of fig. 1 and directed to the outside of the paper surface. The present invention has been described in terms of the viewing angle of the reader or operator, but the above directional terms should not be construed or interpreted as limiting the scope of the present invention.

Example 2

The present embodiment is a modification of embodiment 1, and the main difference between the present embodiment and embodiment 1 is that a first redirecting fixed shaft group 301 and a second redirecting fixed shaft group 302 are arranged left and right, and a redirecting movable shaft group 303 is located at the front side, the rear side, the upper side or the lower side of the first redirecting fixed shaft group 301, as shown in fig. 6.

The remaining features of this embodiment are the same as those of embodiment 1, and this embodiment will not be described in detail for the sake of brevity.

The above description is only exemplary of the invention and should not be taken as limiting the scope of the invention, so that the invention is intended to cover all modifications and equivalents of the embodiments described herein. In addition, the technical features and the technical schemes, and the technical schemes can be freely combined and used.