Composite lifting system for vertical shaft deslagging

Abstract

The invention discloses a composite lifting system for vertical shaft deslagging, and belongs to the technical field of design and manufacturing of mine engineering vertical shaft construction process equipment. The composite lifting system for vertical shaft deslagging can effectively improve deslagging efficiency and reduce energy consumption. The composite lifting system comprises a derrick, a winch, a composite lifting mechanism and at least two lifting buckets, the derrick is arranged on the ground above the deslagging well, the winch is arranged on the ground beside the deslagging well in a manner of being matched with the derrick in position, and the composite lifting mechanism is arranged on the ground between the derrick and the winch in a manner of being matched with the winch in position through the derrick; the buckets divided into at least two groups are respectively and independently arranged at the lifting end of the composite lifting mechanism, and the power input end of the composite lifting mechanism is connected with the power output end of the winch through a winch traction rope; and at least one group of buckets ascends to discharge the slag and at least one group of buckets descends to load the slag through the winch under the cooperation of the winch traction rope input power and the composite lifting mechanism.

Description

Technical Field

[0001] The invention relates to a composite hoisting system, in particular to a composite hoisting system for vertical shaft slag discharge, and belongs to the technical field of design and manufacturing of mining engineering vertical shaft construction process equipment. Background Art

[0002] During shaft construction, workers use hoisting equipment (such as hoists and winches) mounted on the derrick to lift rock debris from underground into buckets or skips to the surface. The derrick, as a supporting structure, bears the weight of the hoisting equipment and buckets, as well as the various forces generated during the lifting process. The hoisting system controls the raising and lowering of the buckets, transporting the rock debris from underground to the surface unloading point. Rock debris is typically loaded into the bucket using a rock grab or other loading equipment, and then hoisted to the surface by the hoisting system, completing the removal process.

[0003] Current shaft hoisting equipment all adopts a supporting transportation mode in which one winch lifts one bucket. For large-diameter shaft construction, 2-3 groups of buckets and winches can be set up to work simultaneously to discharge slag. The advantage of this slag discharge method is that the structural force form is single and the bucket lifting is stable and reliable; however, its shortcomings are also obvious, including low lifting efficiency and high energy consumption.

[0004] The utility model patent with announcement number CN214616528U discloses a slag discharge device for a highway tunnel shaft, comprising a derrick and a hoisting tray. The derrick is fixed to the ground outside the shaft and comprises a plurality of supporting steel pipes. An upper platform and a lower platform are fixed to the steel pipes. A pulley fixed plate is fixed to the upper platform. A plurality of fixed pulleys are fixed to the pulley fixed plate. A traction rope is wound around each fixed pulley. The inner end of each traction rope extends into the shaft. The outer end of each traction rope is connected to a winch. The number of traction ropes is the same as the number of winches. A hoisting tray is provided in the shaft. Compared with the prior art, the technical effect of the utility model is that the utility model is equipped with a derrick, a rotary rock grabber, a slag discharge bucket, and a slag discharge chute. By utilizing the cooperation between them, the slag discharge operation can be completed very easily. The slag discharge speed can reach 3 cubic meters per minute, saving manpower and material resources.

[0005] The utility model patent with announcement number CN220302128U discloses a new type of slag discharge and slag chute device for a highway tunnel shaft. The device comprises a slag discharge mechanism, which includes a slag discharge bucket, a slag chute mechanism, and a pulling device for pulling the slag chute mechanism. The bottom of the slag discharge bucket is provided with a docking member that docks with the top of the slag chute mechanism. The pulling device is used to control the connection or separation of the docking member and the slag chute mechanism. The docking member is capable of pulling the bottom of the slag discharge bucket when the slag discharge bucket is dumping the slag. This utility model provides a rotating platform rotatably connected to the slag chute at the upper end of the slag chute, and a curved hook is fixedly connected to the upper end of the rotating platform. A U-shaped rod is connected to the bottom of the slag discharge bucket. The hook and the U-shaped rod cooperate to pull the bottom of the slag discharge bucket when dumping the slag, thereby ensuring the stability of the slag discharge bucket during the dumping process.

[0006] In the above-mentioned device, the number of buckets, the number of traction ropes and the number of winches are still the same, and a low-energy and efficient slag discharge mode cannot be achieved. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a composite lifting system for vertical shaft slag discharge, which can effectively improve the slag discharge efficiency and reduce energy consumption.

[0008] The technical solution adopted to solve the above technical problems is: a composite lifting system for vertical shaft slag discharge, the composite lifting system includes a derrick, a winch, a composite lifting mechanism and at least two buckets, the derrick is arranged on the ground above the slag discharge shaft, the winch is arranged on the ground next to the slag discharge shaft in accordance with the position of the derrick, and the composite lifting mechanism is arranged on the ground between the derrick and the winch in accordance with the position of the derrick and the winch; the buckets are divided into at least two groups and are independently arranged on the lifting end of the composite lifting mechanism, and the power input end of the composite lifting mechanism is connected to the power output end of the winch through the winch traction rope; the buckets of each group are lifted by the winch under the cooperation of the winch traction rope input power and the composite lifting mechanism, and at least one group rises to discharge slag while at least one group descends to load slag.

[0009] Furthermore, the derrick includes a derrick body and a sheave group. The sheave group is arranged on the top of the derrick body in a manner that is adapted to the positions of the composite lifting mechanism and the slag discharge pit. The groups of buckets arranged on the lifting end of the composite lifting mechanism can be vertically lifted and lowered above the slag discharge pit with the cooperation of the derrick body through the sheave group. The composite lifting mechanism is arranged on the ground between the derrick body and the winch in a manner that is adapted to the position of the derrick body and the winch.

[0010] The preferred embodiment of the above scheme is that the sheave group includes multiple sheaves whose number is equal to the number of bucket groups, and each group of buckets arranged on the lifting end of the composite lifting mechanism is respectively arranged above the slag discharge shaft in the vertical direction through a sheave in cooperation with the derrick body.

[0011] Furthermore, the winch also includes a winch frame, a driving mechanism and a winch wheel. The driving mechanism and the winch wheel are arranged on the winch frame in a positionally adaptive manner. The power input end of the winch wheel is connected to the power output end of the driving mechanism. The winch traction rope with one end fixed to the winch wheel is wound around the corresponding winch wheel. The power output end of the winch traction rope is connected to the power input end of the composite lifting mechanism. The winch is arranged on the ground next to the slag discharge well in a positionally adaptive manner to the derrick through the winch frame.

[0012] The preferred embodiment of the above scheme is that the compound lifting mechanism includes a support frame, a driving pulley group and a plurality of pulley lifting assemblies whose number is equal to the number of bucket groups, and a group of buckets are respectively arranged at the lifting end of each set of pulley lifting assemblies, and the driving pulley group is arranged on the support frame in a manner adapted to the position of each set of pulley lifting assemblies, the winch traction rope is wound around the driving pulley group through its power output end, and the power input end of each set of pulley lifting assemblies is connected to the power output end of the driving pulley group; each group of buckets arranged on the power output end of each set of pulley lifting assemblies is driven by the driving pulley group, and at least one group rises to discharge slag while at least one group descends to load slag in cooperation with the driving force transmitted by the winch traction rope.

[0013] Furthermore, the support frame is a vertical frame with support legs at the upper end. The driving pulley group and each set of pulley lifting components are arranged on the vertical frame in a mutually adaptive manner. The upper end of the vertical frame is connected to the derrick body of the derrick through the support legs in a manner that is adapted to the position of the derrick's sheave group.

[0014] A preferred embodiment of the above scheme is that the driving pulley group includes an upper fixed shaft, a movable pulley shaft, a group of driving fixed pulley groups and a group of driving movable pulley groups, the driving fixed pulley group and the driving movable pulley group each include at least two driving fixed pulleys and at least two driving movable pulleys that adapt to each other, each driving fixed pulley is movably arranged on the upper part of the vertical frame through the upper fixed shaft, and each driving movable pulley arranged on the movable pulley shaft is vertically suspended in the middle part of the vertical frame by a winch traction rope wound thereon, and the power input end of each group of pulley lifting assemblies is respectively connected to the driving movable pulley group through the movable pulley shaft.

[0015] Furthermore, each set of pulley lifting assemblies includes a lifting traction rope, a lifting fixed shaft, a movable pulley shaft, a set of lifting fixed pulley groups and a set of lifting movable pulley groups, each set of lifting fixed pulley groups and each set of lifting movable pulley groups respectively include at least two lifting fixed pulleys and at least two lifting movable pulleys, at least one set of lifting fixed pulley groups is arranged on the vertical frame above the upper end of the vertical lifting operation range of the movable pulley shaft through the lifting fixed shaft, and at least one set of lifting fixed pulley groups is arranged on the vertical frame below the lower end of the vertical lifting operation range of the movable pulley shaft through the lifting fixed shaft, the driving movable pulley group and each set of lifting movable pulley groups are arranged on the movable pulley shaft in a mutually adaptive manner, each set of lifting fixed pulley groups and the corresponding sets of lifting movable pulley groups are respectively connected as a whole through the wound lifting traction rope, and a set of buckets are respectively arranged at the free end of each lifting traction rope.

[0016] The preferred embodiment of the above scheme is that the total weight of the movable pulley shaft plus the driving movable pulley and each set of lifting movable pulley groups is not less than the total weight of each bucket that needs to be lifted and the slag contained in each bucket.

[0017] Furthermore, the compound lifting mechanism includes two sets of pulley lifting assemblies, and the lifting fixed axis of the pulley lifting assembly arranged above the upper end of the vertical lifting range of the movable pulley shaft is the same axis as the upper fixed axis of the driving pulley group.

[0018] The beneficial effects of the present invention are as follows: the technical solution provided by the present application is to set up a composite hoisting system including a derrick, a winch, a composite lifting mechanism and at least two buckets, and arrange the derrick on the ground above the slag discharge shaft, arrange the winch on the ground next to the slag discharge shaft in a manner adapted to the position of the derrick, and arrange the composite lifting mechanism on the ground between the derrick and the winch in a manner adapted to the position of the derrick and the winch; then, the buckets of at least two groups are independently arranged on the lifting end of the composite lifting mechanism, and the power input end of the composite lifting mechanism is connected to the power output end of the winch through the winch traction rope; finally, when slag is discharged, the buckets of each group are lifted by the winch through the winch traction rope input power and the composite lifting mechanism, and at least one group is lifted to discharge slag while at least one group is lowered to load slag. In this way, when slag is discharged using the composite lifting system of the present application, at least two buckets of rock slag can be lifted from the shaft to the outside of the shaft in one lifting process through the composite lifting mechanism, thereby effectively improving the slag discharge efficiency and greatly reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the composite lifting system for vertical shaft slag discharge of the present invention; Figure 2The diagram is a three-dimensional structural diagram of the composite lifting mechanism involved in the composite lifting system for vertical shaft slag discharge of the present invention, connected with the winch and the crown sheave.

[0020] Marked in the figure are: bucket 1, slag well 2, ground 3, winch traction rope 4, derrick body 5, sheave 6, winch frame 7, drive mechanism 8, capstan 9, support leg 10, vertical bent frame 11, upper fixed shaft 12, movable pulley shaft 13, driving fixed pulley block 14, driving movable pulley block 15, lifting traction rope 16, lifting fixed shaft 17, lifting fixed pulley block 18, lifting movable pulley block 19. DETAILED DESCRIPTION

[0021] like Figure 1 、 Figure 2 The present invention provides a composite hoisting system for vertical shaft slag discharge that can effectively improve slag discharge efficiency and reduce energy consumption. The composite hoisting system includes a derrick, a winch, a composite lifting mechanism, and at least two buckets 1. The derrick is arranged on the ground 3 above the slag discharge shaft 2. The winch is arranged on the ground 3 next to the slag discharge shaft 2 in accordance with the position of the derrick. The composite lifting mechanism is arranged on the ground 3 between the derrick and the winch in accordance with the position of the derrick and the winch. The buckets 1 of at least two groups are independently arranged on the lifting end of the composite lifting mechanism. The power input end of the composite lifting mechanism is connected to the power output end of the winch through the winch traction rope 4. The buckets 1 of each group are connected to the power output end of the winch through the winch traction rope 4. At least one group of buckets 1 rises to discharge slag while at least one group descends to load slag under the cooperation of the winch traction rope 4 and the power input of the winch. The technical solution provided by the present application is to set up a composite hoisting system including a derrick, a winch, a composite lifting mechanism and at least two buckets, and arrange the derrick on the ground above the slag discharge shaft, arrange the winch on the ground next to the slag discharge shaft in a manner adapted to the position of the derrick, and arrange the composite lifting mechanism on the ground between the derrick and the winch in a manner adapted to the position of the derrick and the winch; then, each bucket divided into at least two groups is independently arranged on the lifting end of the composite lifting mechanism, and the power input end of the composite lifting mechanism is connected to the power output end of the winch through the winch traction rope; finally, when slag is discharged, the buckets of each group are lifted by the winch through the winch traction rope input power and the composite lifting mechanism, and at least one group is lifted to discharge slag while at least one group is lowered to load slag. In this way, when slag is discharged using the composite lifting system of the present application, at least two buckets of rock slag can be lifted from the shaft to the outside of the shaft in one lifting process through the composite lifting mechanism, thereby effectively improving the slag discharge efficiency and greatly reducing energy consumption.

[0022] Accordingly, in combination with the prior art, to facilitate the arrangement of the composite lifting mechanism of the present application, the derrick of the present application includes a derrick body 5 and a sheave assembly. The sheave assembly is arranged on the top of the derrick body 5 in a manner that is compatible with the position of the composite lifting mechanism and the slag discharge shaft 2. The buckets 1 arranged on the lifting end of the composite lifting mechanism are arranged vertically above the slag discharge shaft 2 by means of the sheave assembly in cooperation with the derrick body 5. The composite lifting mechanism is arranged on the ground 3 between the derrick body 5 and the winch in a manner that is compatible with the position of the winch. In this case, the sheave assembly includes a plurality of sheaves 6, the number of which is equal to the number of bucket groups. The buckets 1 arranged on the lifting end of the composite lifting mechanism are arranged vertically above the slag discharge shaft 2 by means of a sheave 6 in cooperation with the derrick body 5. The winch also includes a winch frame 7, a drive mechanism 8 and a winch wheel 9. The drive mechanism 8 and the winch wheel 9 are arranged on the winch frame 7 in a positionally adaptive manner. The power input end of the winch wheel 9 is connected to the power output end of the drive mechanism 8. The winch traction rope 4, one end of which is fixed to the winch wheel 9, is wound around the corresponding winch wheel 9. The power output end of the winch traction rope 4 is connected to the power input end of the composite lifting mechanism; the winch is arranged on the ground 3 next to the slag discharge shaft 2 in a positionally adaptive manner to the derrick through the winch frame 7.

[0023] Furthermore, as a key component improved in the present application, in order to achieve the purpose of the present application of at least one group rising to discharge slag and at least one group descending to load slag with the cooperation of the compound lifting mechanism, while simplifying its structure as much as possible, the compound lifting mechanism described in the present application includes a support frame, a driving pulley group and a plurality of pulley lifting assemblies whose number is equal to the number of bucket groups, and a group of buckets 1 are respectively arranged at the lifting end of each set of pulley lifting assemblies, and the driving pulley group is arranged on the support frame in a manner adapted to the position of each set of pulley lifting assemblies, the winch traction rope 4 is wound around the driving pulley group through its power output end, and the power input end of each set of pulley lifting assemblies is connected to the power output end of the driving pulley group; each group of buckets 1 arranged on the power output end of each set of pulley lifting assemblies rises to discharge slag and at least one group descends to load slag with the cooperation of the winch traction rope 4 transmitting the driving force through the driving pulley group. Preferably, the support frame is a vertical frame 11 with a support leg 10 at the upper end, the driving pulley group and each set of pulley lifting components are arranged on the vertical frame 11 in a mutually adaptive manner, and the upper end of the vertical frame 11 is connected to the derrick body 5 of the derrick through the support leg 10 in a manner adapted to the position of the derrick sheave group. The driving pulley group includes an upper fixed shaft 12, a movable pulley shaft 13, a group of driving fixed pulley groups 14 and a group of driving movable pulley groups 15. The driving fixed pulley group 14 and the driving movable pulley group 15 each include at least two driving fixed pulleys and at least two driving movable pulleys that adapt to each other. Each driving fixed pulley is movably arranged on the upper part of the vertical frame 11 through the upper fixed shaft 12. Each driving movable pulley arranged on the movable pulley shaft 13 is suspended in the middle of the vertical frame 11 in a vertical direction by a winch traction rope 4 wound thereon. The power input end of each group of pulley lifting components is connected to the driving movable pulley group 15 through the movable pulley shaft 13. Each group of pulley lifting assemblies includes a lifting traction rope 16, a lifting fixed shaft 17, a movable pulley shaft 13, a group of lifting fixed pulley groups 18 and a group of lifting movable pulley groups 19. Each group of lifting fixed pulley groups 18 and each group of lifting movable pulley groups 19 respectively have at least two lifting fixed pulleys and at least two lifting movable pulleys. At least one group of lifting fixed pulley groups 18 is arranged on the vertical frame 11 above the upper end of the vertical lifting range of the movable pulley shaft 13 through the lifting fixed shaft 17. 13 Along the vertical frame 11 below the lower end of the vertical lifting operation range, at least one set of lifting fixed pulley groups 18 is arranged through the lifting fixed shaft 17, and the driving movable pulley group 15 and the corresponding sets of lifting movable pulley groups 19 are arranged on the movable pulley shaft 13 in a mutually adaptive manner. Each set of lifting fixed pulley groups 18 and each set of lifting movable pulley groups 19 are respectively connected to each other as a whole through the winding lifting traction rope 16, and a set of buckets 1 are respectively arranged at the free end of each lifting traction rope 16.At the same time, in order to minimize energy consumption, the total weight of the movable pulley shaft 13 plus the driving movable pulley and each set of lifting movable pulley groups in the present application is not less than the total weight of each bucket 1 that needs to be lifted and the slag contained in each bucket 1. At this time, in order to simplify the structure and maintain an optimal balance between structure and efficiency, the composite lifting mechanism of the present application includes two sets of pulley lifting assemblies. The lifting fixed shaft 17 of the pulley lifting assembly arranged above the upper end of the vertical lifting range of the movable pulley shaft 13 is the same shaft as the upper fixed shaft 12 of the driving pulley group.

[0024] In summary, the technical solution provided by this application also has the following advantages: 1. This application uses a winch to simultaneously lower the empty slag bucket when lifting the slag, which significantly improves the slag discharge efficiency.

[0025] 2. This application installs three pulley sets on the support frame, connected in series, so that the winch can lift two buckets of slag in one retraction and extension stroke, greatly improving the efficiency of slag removal. In addition, lifting the slag by using the movable pulley counterweight can also effectively save energy.

[0026] 3. This application uses the coordination of three pulley blocks and winches, and the adjustment of the number of wire rope strands between the winch and the movable pulley and between the movable pulley and the fixed pulley to effectively improve the operating efficiency of the bucket.

[0027] Example 1 This application aims to develop an efficient shaft slag discharge device to improve the efficiency of shaft slag discharge, reduce the energy consumption of shaft slag discharge, reduce the number of workers, save manpower, and reduce construction safety risks.

[0028] The specific technical solution is: 1. Arrange the derrick on the ground, with the derrick located directly above the shaft. Two sheaves are arranged on the derrick platform. The support frame is arranged on one side of the derrick. The top end of the support frame is fixedly connected to the derrick, and the other end is fixed to the ground.

[0029] 2. Three sets of pulleys are set on the support frame. The upper pulley group and the lower pulley group are fixed pulleys, and the middle pulley group is a movable pulley.

[0030] 3. The upper pulley block is provided with a left pulley and a middle pulley, the middle pulley block is provided with a left pulley, a middle pulley and a right pulley, and the lower pulley block is provided with a right pulley.

[0031] 4. A winch is installed on the outside of the support frame. The winch traction rope passes through the middle pulley on the upper pulley block and connects to the middle pulley on the middle pulley block. The winch traction realizes the up and down movement of the middle pulley shaft.

[0032] 5. A traction rope connects the left pulley on the middle pulley shaft and the left pulley on the upper pulley block to form a pulley block, and is connected to a bucket through the sky sheave.

[0033] 6. Another traction rope connects the right pulley on the middle pulley block and the right pulley on the lower pulley block to form another pulley block, and is connected to another bucket through the sky sheave.

[0034] The steps for slag removal are as follows: Step 1: By contracting the winch's traction rope, the middle pulley block moves upward as a whole, driving the bucket of the left pulley block downward and the bucket of the right pulley block upward, thus lifting the soil in the bucket on the left. At the same time, the bucket of the right pulley block moves downward.

[0035] Step 2: The deadweight or counterweight of the middle pulley block drives the traction rope of the winch to be tensioned, and the middle pulley block moves downward as a whole, thereby driving the bucket of the left pulley block to move upward, so as to lift the slag in the right bucket, and at the same time, the bucket of the left pulley block moves downward.

[0036] Step 3: The above two steps are repeated repeatedly, and the slag bucket is lowered while the slag is lifted, thereby improving the slag discharge efficiency.

[0037] The present invention and the device can realize one retraction and extension stroke of the winch and can lift two buckets of slag, thereby effectively improving the slag discharge efficiency.

Claims

1. A composite lifting system for vertical shaft slag discharge, characterized by: The composite lifting system comprises a derrick, a winch, a composite lifting mechanism and at least two buckets (1); the derrick is arranged on the ground (3) above the slag discharge shaft (2); the winch is arranged on the ground (3) next to the slag discharge shaft (2) in a manner adapted to the position of the derrick; the composite lifting mechanism is arranged on the ground (3) between the derrick and the winch in a manner adapted to the position of the derrick and the winch; the buckets (1) are at least divided into two groups and are independently arranged on the lifting end of the composite lifting mechanism; the power input end of the composite lifting mechanism is connected to the power output end of the winch through the winch traction rope (4); the buckets (1) of each group are lifted by the winch to discharge slag while at least one group is lowered to load slag under the cooperation of the winch traction rope (4) and the composite lifting mechanism.

2. The composite lifting system for vertical shaft slag discharge according to claim 1, characterized in that: The derrick includes a derrick body (5) and a sheave assembly. The sheave assembly is arranged on the top of the derrick body (5) in a manner adapted to the positions of the composite lifting mechanism and the slag discharge pit (2). The buckets (1) arranged on the lifting end of the composite lifting mechanism can be vertically lifted and lowered above the slag discharge pit (2) in cooperation with the derrick body (5) through the sheave assembly. The composite lifting mechanism is arranged on the ground (3) between the derrick body (5) and the winch in a manner adapted to the position of the winch through the derrick body (5).

3. The composite lifting system for vertical shaft slag discharge according to claim 2, characterized in that: The sheave assembly includes a plurality of sheaves (6) whose number is equal to the number of bucket groups. Each bucket group (1) arranged on the lifting end of the composite lifting mechanism is arranged above the slag discharge shaft (2) in a vertically movable manner through a sheave (6) in cooperation with the derrick body (5).

4. The composite lifting system for vertical shaft slag discharge according to claim 1, 2 or 3, characterized in that: The winch further comprises a winch frame (7), a driving mechanism (8) and a winch wheel (9), wherein the driving mechanism (8) and the winch wheel (9) are both arranged on the winch frame (7) in a manner adapted to each other, a power input end of the winch wheel (9) is connected to a power output end of the driving mechanism (8), a winch traction rope (4) fixed at one end to the winch wheel (9) is wound around the corresponding winch wheel (9), and a power output end of the winch traction rope (4) is connected to a power input end of the composite lifting mechanism; the winch is arranged on the ground (3) next to the slag discharge shaft (2) in a manner adapted to the position of the derrick through the winch frame (7).

5. The composite lifting system for vertical shaft slag discharge according to claim 4, characterized in that: The composite lifting mechanism comprises a support frame, a driving pulley block and a plurality of pulley lifting assemblies whose number is equal to the number of bucket groups. A group of buckets (1) is respectively arranged at the lifting end of each pulley lifting assembly. The driving pulley block is arranged on the support frame in a manner adapted to the position of each pulley lifting assembly. The winch traction rope (4) is wound around the driving pulley block through its power output end. The power input end of each pulley lifting assembly is connected to the power output end of the driving pulley block. At least one group of buckets (1) arranged on the power output end of each pulley lifting assembly rises to discharge slag while at least one group descends to load slag in cooperation with the driving pulley block in transmitting driving force through the winch traction rope (4).

6. The composite lifting system for vertical shaft slag discharge according to claim 5, characterized in that: The support frame is a vertical bent frame (11) with a support leg (10) at the upper end. The driving pulley group and each set of pulley lifting components are arranged on the vertical bent frame (11) in a mutually adaptive manner. The upper end of the vertical bent frame (11) is connected to the derrick body (5) of the derrick through the support leg (10) in a manner adapted to the position of the sheave group of the derrick.

7. The composite lifting system for vertical shaft slag discharge according to claim 6, characterized in that: The driving pulley assembly comprises an upper fixed shaft (12), a movable pulley shaft (13), a group of driving fixed pulleys (14) and a group of driving movable pulleys (15), wherein the driving fixed pulley assembly (14) and the driving movable pulley assembly (15) respectively comprise at least two driving fixed pulleys and at least two driving movable pulleys adapted to each other, wherein each driving fixed pulley is movably arranged on the upper part of the vertical bent frame (11) via the upper fixed shaft (12), and each driving movable pulley arranged on the movable pulley shaft (13) is suspended in the middle part of the vertical bent frame (11) in a vertical direction by means of a winch traction rope (4) wound thereon, and the power input end of each group of pulley lifting components is respectively connected to the driving movable pulley assembly (15) via the movable pulley shaft (13).

8. The composite lifting system for vertical shaft slag discharge according to claim 7, characterized in that: Each set of pulley lifting components comprises a lifting traction rope (16), a lifting fixed shaft (17), a movable pulley shaft (13), a set of lifting fixed pulley groups (18) and a set of lifting movable pulley groups (19), each set of lifting fixed pulley groups (18) and each set of lifting movable pulley groups (19) respectively comprises at least two lifting fixed pulleys and at least two lifting movable pulleys, at least one set of lifting fixed pulley groups (18) is arranged on a vertical rack (11) above the upper end of the vertical lifting range of the movable pulley shaft (13) via the lifting fixed shaft (17), and at least one set of lifting fixed pulley groups (18) is arranged on the movable pulley shaft (1 3) At least one set of lifting fixed pulleys (18) is arranged on the vertical rack (11) below the lower end of the vertical lifting operation range through the lifting fixed shaft (17), the driving movable pulley group (15) and each set of lifting movable pulley groups (19) are arranged on the movable pulley shaft (13) in a mutually adaptive manner, each set of lifting fixed pulleys (18) and the corresponding set of lifting movable pulley groups (19) are connected to form a whole through the winding lifting traction rope (16), and a set of buckets (1) are arranged at the free end of each lifting traction rope (16).

9. The composite lifting system for vertical shaft slag discharge according to claim 8, characterized in that: The sum of the total weight of the movable sliding shaft (13) plus the driving movable pulley and each group of lifting movable pulley groups is not less than the sum of the weights of each bucket (1) that needs to be raised and the slag contained in each bucket (1).

10. The composite lifting system for vertical shaft slag discharge according to claim 9, characterized in that: The composite lifting mechanism comprises two sets of pulley lifting assemblies, wherein the lifting fixed shaft (17) of the pulley lifting assembly arranged above the upper end of the vertical lifting range of the movable pulley shaft (13) and the upper fixed shaft (12) of the driving pulley group are the same shaft.

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