Underground engineering double-level deslagging structure

Abstract

The utility model discloses an underground engineering double-level deslagging structure, which comprises a slag storage funnel, a connecting chute tube, a contraction tongue and a bucket protection platform, the slag storage funnel is arranged in a gate way, a necking opening of the slag storage funnel is communicated with one end of the connecting chute tube, an opening and closing valve is arranged at the necking opening, and the connecting chute tube is arranged obliquely downwards towards a vertical shaft. The telescopic tongue is obliquely downwards arranged in the direction of the vertical shaft, the end, away from the sliding cylinder, of the telescopic tongue extends into the vertical shaft, the bucket protection table is installed in the vertical shaft and located below the telescopic tongue, the telescopic tongue can stretch into the bucket protection table through the side face, close to the telescopic tongue, of the bucket protection table, and the other three faces of the bucket protection table are each provided with a protection structure. According to the utility model, the means of releasing and storing the slag stone is realized, the storage and transportation of the slag stone are conveniently completed, a three-surface protection structure of the bucket protection platform can avoid the injury to operating personnel in a gate way below, and the rotary arrangement of the contraction tongue effectively avoids the interference of the part extending into the vertical shaft on the vertical movement of the bucket.

Description

Technical Field

[0001] This utility model relates to the field of mining construction technology, specifically to a dual-level slag removal structure for underground engineering. Background Technology

[0002] The overall structure of a certain underground project adopts a "sloping ramp + three vertical shafts + two levels of horizontal tunnels" framework, namely: one spiral ramp, one personnel vertical shaft, one intake shaft, and one exhaust shaft, with two additional test levels, of which the -560m level is the main test level and the -280m level is the auxiliary test level. In traditional construction methods, personnel and materials need to be transported through the shafts into the horizontal tunnels, while excavated slag needs to be transferred from the horizontal tunnels to the shafts for hoisting. The transportation method is changed to a combination of mine car transportation and cage or bucket hoisting. However, due to the large-scale expansion of the working face, the required hoisting volume has increased significantly, and conventional transportation methods are not convenient for transporting and discharging slag.

[0003] Currently, to meet the transition requirements of vertical-to-horizontal conversion and downhole construction, it is usually necessary to modify the hoisting system of the wellbore to quickly achieve a larger hoisting capacity in a shorter period of time. However, this requires temporary modification of the winch after the wellbore reaches the bottom. Furthermore, this method has the following drawbacks:

[0004] Overall construction progress is lagging behind: the conversion of the winch requires a long time, generally 6 to 8 months. During the conversion period, the underground construction progress cannot be met, which affects the continuous underground construction and the construction speed.

[0005] It is not conducive to cost savings: due to the need to make a temporary cage and modify the sheave platform, the cost of modifying the winch is relatively high, generally around 300,000 yuan.

[0006] Large site layout: There are certain requirements for the direction of the underground vehicle exit, the arrangement of the ground stabilizing mechanism, and the site. The direction of the underground vehicle exit must be consistent with the direction of hoisting, and a corresponding construction site is required.

[0007] Therefore, there is an urgent need for a dual-level slag removal structure for underground engineering to solve the problem that conventional transportation methods are not convenient for transporting and discharging slag. Utility Model Content

[0008] This utility model addresses the shortcomings of existing technologies by providing a dual-level slag discharge structure for underground engineering, thereby solving the problem that conventional transportation methods are inconvenient for transporting and discharging slag.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A dual-level slag removal structure for underground engineering includes a slag storage hopper, a connecting chute, a constricting tongue, and a bucket protection platform. The slag storage hopper is installed in a horizontal tunnel with its flared end facing upwards. The constricted end of the slag storage hopper connects to one end of the connecting chute, and an opening / closing valve is provided at the constricted end. The opening / closing valve is used to connect or disconnect the slag storage hopper from the connecting chute. The connecting chute is inclined downwards towards the vertical shaft, and its other end is rotatably connected to a constricting tongue that communicates with the connecting chute. The constricting tongue is inclined downwards towards the vertical shaft, and its end away from the connecting chute extends into the vertical shaft. The bucket protection platform is installed in the vertical shaft and is located below the constricting tongue. The support base of the bucket protection platform allows the bucket to be placed, and the side of the bucket protection platform near the constricting tongue allows the constricting tongue to extend in. The other three sides are provided with protective structures.

[0011] To optimize the above technical solution, the specific measures also include:

[0012] Furthermore, the bucket protection platforms corresponding to different depths of horizontal tunnels are vertically staggered in the shaft.

[0013] Furthermore, the constricted end of the slag storage funnel is set obliquely downwards towards the vertical shaft, and several fixed support frames fixed to the rock mass are connected at intervals on the bottom inclined surface of the slag storage funnel away from the vertical shaft.

[0014] Furthermore, the side wall of the slag storage funnel is also wrapped with limiting ribs, and the ends of the limiting ribs are fixedly connected to the fixed support frame.

[0015] Furthermore, it also includes a fixed bracket and a hydraulic push rod. The upper end of the opening and closing valve is hinged to the constriction of the slag storage funnel. The fixed bracket is installed on the left and right sides of the connecting chute. A hydraulic push rod is hinged to the fixed bracket. The output end of the hydraulic push rod away from the fixed bracket is hinged to the end face of the opening and closing valve away from the slag storage funnel, and is used to drive the opening and closing valve to rotate for opening and closing.

[0016] Furthermore, the connection point between the connecting chute and the constricted end of the slag storage funnel is a first chute, the first chute is connected to a constriction section, the constriction section is connected to a second chute, and the width of the first chute is greater than that of the second chute.

[0017] Furthermore, the retractable tongue is rotatably disposed on the outer side of the end of the connecting chute via a rotating shaft, and the upper end of the retractable tongue is open. The retractable tongue can be driven by a rotating mechanism to rotate around the rotating shaft to be parallel to the connecting chute, or to rotate away from the end of the connecting chute to be above the connecting chute.

[0018] Furthermore, extension plates are provided on both sides of the retractable tongue away from the end of the connecting chute, and connection holes are provided on the extension plates. A pulley is installed at the top of the tunnel, and a winch is provided in the tunnel. Steel wire ropes are respectively connected to the connection holes on both sides. The steel wire ropes pass through the pulleys and are wound around the winch. The winch is used to wind up and unwind the steel wire ropes to drive the retractable tongue to rotate.

[0019] Furthermore, the protective structure on the side of the bucket protective platform away from the retractable tongue is a mounting frame. The mounting frame includes several mounting channel steels and connecting plates. The several mounting channel steels are spaced apart from top to bottom in the vertical shaft. The two ends of the mounting channel steels are installed on the inner side wall of the vertical shaft. The connecting plate is connected to the several mounting channel steels and is set on one side of the support base. The other two protective structures are side baffles connected to the connecting plates.

[0020] Furthermore, a rubber pad is laid on the support base, and each of the four corners of the rubber pad has a lifting hole.

[0021] The beneficial effects of this utility model are:

[0022] This utility model utilizes a combination of a slag storage funnel, a connecting chute, a constricting tongue, and a bucket safety platform. In use, the slag storage funnel increases the storage capacity of slag, facilitating control of the amount transported per trip and reducing the space occupied by slag. The opening and closing valves on the slag storage funnel allow for the connection between the funnel and the connecting chute to be opened or closed as needed, thus achieving the release and storage of slag. The connecting chute guides the slag to the constricting tongue, and then further guides it to the bucket located on the bucket safety platform, completing the convenient storage and transportation of slag and solving the problem of... This design addresses the inconvenience of conventional transportation methods for transporting and discharging slag and stone. Furthermore, the addition of a protective platform for the bucket facilitates bucket placement and ensures safety during loading. The platform's three-sided protective structure, combined with a support base, prevents slag and stone from falling below, thus avoiding injury to personnel working in the lower shaft and significantly enhancing safety. Additionally, the rotating connection between the retractable tongue and the connecting chute effectively prevents the end of the retractable tongue extending into the shaft from interfering with the bucket's vertical movement.

[0023] This invention enables continuous construction operations within a short period, accelerating the overall construction progress and significantly reducing costs. It also reduces overlapping construction processes, labor and machinery costs, simplifies construction techniques, and lowers construction risks. Attached Figure Description

[0024] Figure 1 This is a top view schematic diagram of a double-level slag removal structure for underground engineering proposed in this utility model;

[0025] Figure 2This is a top enlarged view of a double-horizontal slag removal structure for underground engineering proposed in this utility model;

[0026] Figure 3 This is a side view schematic diagram of a double-level slag removal structure for underground engineering proposed in this utility model;

[0027] Figure 4 This is a side enlarged view of a dual-level slag removal structure for underground engineering proposed in this utility model.

[0028] Attached reference numerals: 1-Slag hopper, 11-Side retainer, 12-Limiting tie bar, 13-Fixed support frame, 14-Opening / closing valve, 2-Connecting chute, 21-First chute, 22-Contraction section, 23-Second chute, 3-Contraction tongue, 4-Hanging bucket protective platform, 41-Side baffle, 42-Rubber pad, 43-Support base, 5-Mounting frame, 51-Mounting channel steel, 52-Connecting plate, 6-Fixed bracket, 7-Hydraulic push rod. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the accompanying drawings.

[0030] As attached Figure 1 and attached Figure 2 As shown in the figure, an underground engineering double-level slag discharge structure according to an embodiment of the present invention includes a slag storage hopper 1, a connecting chute 2, a constricting tongue 3, and a bucket protection platform 4. The slag storage hopper 1 is installed in a horizontal tunnel with its flared opening facing upwards. The constricted opening of the slag storage hopper 1 is connected to one end of the connecting chute 2, and an opening / closing valve 14 is provided at the constricted opening. The opening / closing valve 14 is used to connect or disconnect the connection between the slag storage hopper 1 and the connecting chute 2. The connecting chute 2 is set obliquely downwards towards the vertical shaft, and the other end is rotatably connected to the constricting tongue 3, which is connected to the connecting chute 2. The constricting tongue 3 is set obliquely downwards towards the vertical shaft, and the end away from the connecting chute 2 extends into the vertical shaft. The bucket protection platform 4 is installed in the vertical shaft and is located below the constricting tongue 3. The support base 43 at the bottom of the bucket protection platform 4 can be used to place the bucket. The side of the bucket protection platform 4 near the constricting tongue 3 can be used for the constricting tongue 3 to extend into, and the other three sides are provided with protective structures.

[0031] This utility model utilizes a combination of a slag storage funnel 1, a connecting chute 2, a constricting tongue 3, and a bucket support platform 4. In use, the slag storage funnel 1 enhances slag storage capacity, facilitating control over the amount transported per trip and reducing the space occupied by the slag. The opening and closing valve 14 on the slag storage funnel 1 allows for the connection between the slag storage funnel 1 and the connecting chute 2 to be opened or closed as needed, thus achieving the release and storage of slag. The connecting chute 2 guides the slag to the constricting tongue 3, and further guides it to the bucket located on the bucket support platform 4, completing the convenient storage and transportation of slag. This system solves the problem of conventional transportation methods being inconvenient for transporting and discharging slag and stone. Simultaneously, the installation of the bucket safety platform 4 facilitates bucket placement and ensures safety during bucket loading. During slag and stone transportation, the three-sided protective structure of the bucket safety platform 4, combined with the support base 43, prevents slag and stone from falling below, avoiding injury to personnel working in the lower level tunnel and greatly ensuring safety. Furthermore, the rotating connection between the retractable tongue 3 and the connecting chute 2 effectively prevents the end of the retractable tongue 3 extending into the shaft from interfering with the bucket's vertical movement.

[0032] In another specific embodiment, the slag hopper 1, connecting chute 2 and constricting tongue 3 located in horizontal tunnels of different depths can be set normally, and the bucket protection platform 4 corresponding to horizontal tunnels of different depths can be set vertically staggered in the shaft. In this way, the simultaneous construction and slag discharge of two horizontal tunnels can be met, thereby increasing the construction efficiency.

[0033] In another specific embodiment, the constricted end of the slag storage hopper 1 is angled downwards towards the vertical shaft, and several fixed support frames 13, fixed to the rock mass, are spaced apart on the bottom slope of the slag storage hopper 1 away from the vertical shaft. Thus, the angled downwards orientation of the constricted end of the slag storage hopper 1 towards the vertical shaft facilitates the transportation and guidance of the slag within the slag storage hopper 1; simultaneously, the fixed support frames 13 ensure the stability of the irregularly shaped slag storage hopper 1 structure within the horizontal tunnel.

[0034] In a further specific embodiment based on the above, a limiting tie 12 is also wound around the side wall of the slag storage funnel 1, and the end of the limiting tie 12 is fixedly connected to the fixed support frame 13. In this way, the limiting tie 12, in conjunction with the fixed support frame 13, can strengthen the fixed stability of the slag storage funnel 1 structure.

[0035] In another specific embodiment, the flared end of the slag storage funnel 1 is provided with a retaining edge 11. This helps to prevent slag from splashing when it is poured into the slag storage funnel 1.

[0036] In another specific embodiment, a fixed support 6 and a hydraulic push rod 7 are also included. The upper end of the opening and closing valve 14 is hinged to the constriction of the slag funnel 1. The fixed support 6 is installed on the left and right sides of the connecting chute 2. The hydraulic push rod 7 is hinged to the fixed support 6. The output end of the hydraulic push rod 7 away from the fixed support 6 is hinged to the end face of the opening and closing valve 14 away from the slag funnel 1, and is used to drive the opening and closing valve 14 to rotate for opening and closing. Thus, through the cooperative arrangement of the fixed support 6 and the hydraulic push rod 7, the opening and closing of the opening and closing valve 14 can be conveniently controlled. In this embodiment, a control unit can be connected as needed for intelligent control. In this embodiment, the connecting chute 2 can be reinforced with the rock mass in the horizontal tunnel to ensure the stability of the fixed support 6 and other structures.

[0037] In another specific embodiment, the connection point between the connecting chute 2 and the slag funnel 1 at the constricted end is a first chute 21. The first chute 21 is connected to a constriction section 22, and the constriction section 22 is connected to a second chute 23. The width of the first chute 21 is greater than that of the second chute 23. Thus, the wider first chute 21 facilitates the outflow of slag, and after outflow, the narrower second chute 23 is used to constrain and guide the slag, improving transfer efficiency. The constriction section 22 facilitates a smooth transition of the slag.

[0038] In another specific embodiment, the retractable tongue 3 is rotatably mounted on the outer side of the end of the connecting chute 2 via a rotating shaft, and the upper end of the retractable tongue 3 is open. The retractable tongue 3 can be driven by a rotating mechanism to rotate around the rotating shaft to be parallel to the connecting chute 2, or to rotate away from the connecting chute 2 and above it. Thus, it can be driven by a rotating mechanism to rotate around the rotating shaft to be parallel to the connecting chute 2, or to rotate away from the connecting chute 2 and above it. Simultaneously, the openness at the upper end of the retractable tongue 3 effectively avoids interference with the connecting chute 2 and other structures. In this embodiment, a one-sided movable sealing rubber sheet can be provided at the connection between the retractable tongue 3 and the connecting chute 2 as needed. Therefore, during the rotation of the retractable tongue 3, the connection with the connecting chute 2 can be sealed as needed.

[0039] In a further specific embodiment based on the above, extension plates are provided on both sides of the end of the retractable tongue 3 away from the connecting chute 2. The extension plates have connecting holes. A pulley is installed at the top of the level tunnel, and a winch is installed in the level tunnel. Steel wire ropes are connected to the connecting holes on both sides. The steel wire ropes pass through the pulleys and are wound around the winch. The winch is used to wind up and unwind the steel wire ropes to drive the retractable tongue 3 to rotate. This allows the retractable tongue 3 to be driven to rotate and retract as needed via a winch or other device, thus avoiding interference with the vertical movement of the bucket.

[0040] As attached Figure 3 and attached Figure 4As shown, in another specific embodiment, the protective structure on the side of the bucket protective platform 4 away from the retractable tongue 3 is a mounting frame 5. The mounting frame 5 includes several mounting channel steels 51 and a connecting plate 52. The several mounting channel steels 51 are spaced apart from top to bottom in the vertical shaft. The two ends of the mounting channel steels 51 are installed on the inner side wall of the vertical shaft. The connecting plate 52 is connected to the several mounting channel steels 51 and is set on one side of the support base 43. The other two protective structures are side baffles 41 connected to the connecting plate 52. In this way, the support base 43 and other structures of the bucket protective platform 4 can be installed and reinforced by the mounting frame 5, and the stability of the bucket protective platform 4 is increased by the side baffles 41.

[0041] In another specific embodiment, a rubber pad 42 is laid on the support base 43, and each of the four corners of the rubber pad 42 has a lifting hole. This reduces collision damage to structures such as the bucket, cushions the movement of the bucket, and minimizes the impact of falling slag on the support base 43 and other structures. Simultaneously, the rubber pad 42 with lifting holes can be used with the bucket's hook to collect and transport any slag remaining on the rubber pad 42 as needed. The slag accumulated on the support base 43 must be cleaned once a week to ensure the safe service life of the support base 43. The support base 43 can be constructed of steel beams and steel plates.

[0042] One specific embodiment of this utility model is as follows:

[0043] Installing this device near the gate platform in a horizontal tunnel, using a slag hopper 1, a connecting chute 2, a constricting tongue 3, and two staggered bucket protection platforms 4, enables simultaneous construction and slag removal at two horizontal levels.

[0044] Specifically, through rigorous calculations on site, a bucket protection platform 4, a slag hopper 1, a connecting chute 2, and a constricting tongue 3 were installed at the -280m gate position using a hoisting platform. The various structures were connected as needed using brackets and high-strength bolts. At the rocking platform position, a 5m long and 1.5m wide slope with an 8% gradient was excavated as needed to install the connecting chute 2 and the constricting tongue 3. After installation, the slag hopper 1 was installed and connected to the connecting chute 2.

[0045] The dimensions of the blasting hopper 1 are designed based on the working radius of the excavator. The blasting hopper 1 is designed to be 2.83m long, 1.03m wide, and 1.75m high. The blasting slag is repeatedly transferred to the blasting hopper 1 by the excavator. A crossbeam can be installed at the entrance of the blasting hopper 1 to prevent large pieces of slag from clogging or getting stuck in the hopper during the process of transferring slag into the excavator.

[0046] In this process, the underground construction utilizes the wind power of the air compressor. The opening and closing valve 14 is operated by a hydraulic push rod 7 using a fully hydraulic transmission method. During the slag storage process in the slag storage funnel 1, the opening and closing valve 14 is closed using the hydraulic push rod 7. During the slag discharge process in the slag storage funnel 1, the opening and closing valve 14 is opened using the hydraulic push rod 7, allowing the slag to flow into the bucket in one go. The opening and closing valve 14 is monitored throughout each slag discharge process by the underground signalman through button operation. If large pieces of slag appear during the slag discharge process, the signalman can switch the valve opening and closing repeatedly by pressing the button or manually handle it using a crowbar, finally allowing the slag to flow into the bucket.

[0047] The feed inlet of the connecting chute 2 can be 2.83m long x 1.03m wide. The drop between the feed inlet of the connecting chute 2 and the constricting tongue 3 at the bottom of the connecting chute 2 reaches 5.5m. Falling at a 75° incline, it is in free fall, with the slag and stone falling directly into the bucket. Due to the huge impact generated during free fall, significant damage is caused to the bottom steel plate and other components. To mitigate this impact, a 0.8m rubber pad 42 is laid on the support base 43. The falling bucket is directed by a signalman to land on the rubber pad 42 on the support base 43, thereby reducing the drop height of the slag and slowing down the impact velocity.

[0048] The lower movable part is equipped with a retractable tongue 3 that can retract back and forth. A Φ16 steel wire rope is installed on the side of the retractable tongue 3 and an electric hoist is used to switch back and forth. When the bucket is lifted up and down, the retractable tongue 3 retracts. After the bucket falls into the slag discharge platform, the retractable tongue 3 unfolds. The purpose is to ensure that the slag falls accurately into the center of the bucket under free fall, and to play a guiding role. When the bucket is full of slag and is lifted, the retractable tongue 3 does not interfere with it.

[0049] This invention enables continuous construction operations within a short period, accelerating the overall construction progress and significantly reducing costs. It can directly shorten the overall construction period by approximately four months, saving over 1.5 million yuan. It also reduces overlapping construction processes, labor and machinery costs, simplifies construction techniques, and lowers construction risks.

[0050] It should be noted that the terms such as "upper", "lower", "left", "right", "front", and "back" used in this utility model are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0051] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should be considered within its protection scope.

Claims

1. A dual-level slag removal structure for underground engineering, characterized in that: The system includes a slag storage funnel (1), a connecting chute (2), a constricting tongue (3), and a bucket protection platform (4). The slag storage funnel (1) is installed in the horizontal tunnel with its flared end facing upwards. The constricted end of the slag storage funnel (1) connects to one end of the connecting chute (2), and an opening / closing valve (14) is provided at the constricted end. The opening / closing valve (14) is used to connect or disconnect the slag storage funnel (1) from the connecting chute (2). The connecting chute (2) is set obliquely downwards towards the vertical shaft, and its other end is rotatably connected. A constricting tongue (3) is connected to the connecting chute (2). The constricting tongue (3) is set obliquely downward toward the shaft and extends into the shaft from the end away from the connecting chute (2). The bucket protection platform (4) is installed in the shaft and located below the constricting tongue (3). The support base (43) of the bucket protection platform (4) can be used to place the bucket. The side of the bucket protection platform (4) near the constricting tongue (3) can be used for the constricting tongue (3) to extend into. The other three sides are provided with protective structures.

2. The underground engineering double-level slag removal structure according to claim 1, characterized in that: The bucket protection platform (4) corresponding to the horizontal tunnels of different depths is vertically staggered in the vertical shaft.

3. The underground engineering double-level slag removal structure according to claim 1, characterized in that: The constricted end of the slag funnel (1) is set obliquely downward towards the vertical shaft, and several fixed support frames (13) fixed on the rock mass are connected at intervals on the bottom inclined surface of the slag funnel (1) away from the vertical shaft.

4. The underground engineering double-level slag removal structure according to claim 3, characterized in that: The side wall of the slag funnel (1) is also wrapped with a limiting tie (12), and the end of the limiting tie (12) is fixedly connected to the fixed support frame (13).

5. The underground engineering double-level slag removal structure according to claim 1, characterized in that: It also includes a fixed bracket (6) and a hydraulic push rod (7). The upper end of the opening and closing valve (14) is hinged to the constriction of the slag funnel (1). The fixed bracket (6) is installed on the left and right sides of the connecting chute (2). The hydraulic push rod (7) is hinged on the fixed bracket (6). The output end of the hydraulic push rod (7) away from the fixed bracket (6) is hinged to the end face of the opening and closing valve (14) away from the slag funnel (1) to drive the opening and closing valve (14) to rotate for opening and closing.

6. The underground engineering double-level slag removal structure according to claim 1, characterized in that: The connection between the connecting chute (2) and the constricted end of the slag funnel (1) is a first chute (21). The first chute (21) is connected to a constriction section (22), and the constriction section (22) is connected to a second chute (23). The width of the first chute (21) is greater than that of the second chute (23).

7. The underground engineering double-level slag removal structure according to claim 1, characterized in that: The retractable tongue (3) is rotatably mounted on the outer side of the end of the connecting chute (2) via a rotating shaft, and the upper end of the retractable tongue (3) is open. The retractable tongue (3) can be driven by a rotating mechanism to rotate around the rotating shaft to be parallel to the connecting chute (2), or to rotate away from the end of the connecting chute (2) to be above the connecting chute (2).

8. The underground engineering double-level slag removal structure according to claim 7, characterized in that: The retractable tongue (3) is provided with extension plates on both sides of the end away from the connecting chute (2). The extension plates are provided with connecting holes. A pulley is installed at the top of the tunnel. A winch is provided in the tunnel. Steel wire ropes are connected to the connecting holes on both sides. The steel wire ropes pass through the pulleys and are wound around the winch. The winch is used to wind up and unwind the steel wire ropes to drive the retractable tongue (3) to rotate.

9. The underground engineering double-level slag removal structure according to claim 1, characterized in that: The protective structure on the side of the bucket protective platform (4) away from the retractable tongue (3) is a mounting frame (5). The mounting frame (5) includes several mounting channel steels (51) and a connecting plate (52). Several mounting channel steels (51) are spaced apart from top to bottom in the vertical shaft. The two ends of the mounting channel steels (51) are installed on the inner side wall of the vertical shaft. The connecting plate (52) is connected to several mounting channel steels (51) and is set on one side of the support base (43). The other two protective structures are side baffles (41) connected to the connecting plate (52).

10. A dual-level slag removal structure for underground engineering according to claim 1, characterized in that: A rubber pad (42) is laid on the support base (43), and each of the four corners of the rubber pad (42) has a lifting hole.

Images