Mine shaft lifting system and mine shaft

Abstract

The mine shaft lifting system comprises a skip bucket, a shaft guide rope and an over-releasing buffering device, the skip bucket is arranged in the shaft in a liftable mode, the shaft guide rope is arranged in the shaft and used for guiding the skip bucket, the over-releasing buffering device is installed on a shaft bottom steel structure, and the shaft bottom steel structure is distributed downwards from a measuring hopper point position. The over-releasing buffer device is lower than a normal parking space of the skip bucket, the crawling section of the skip bucket is distributed in an area close to the over-releasing buffer device, and the shaft bottom steel structure is limited to have the mechanical property related to the interaction force of the over-releasing buffer device when the skip bucket is over-released. By greatly reducing the length of the crawling section of the skip bucket, the crawling time can be obviously shortened, and the operation efficiency of a vertical shaft hoisting system is improved; on the basis of the shaft bottom steel structure of the previous mine shaft, the number of layers of the supporting beams of the shaft bottom steel structure is reduced, the specification of the structural beams is correspondingly reduced, and the shaft bottom steel structure has the advantages of reducing capital investment and optimizing the shaft bottom steel structure.

Description

Technical Field

[0001] The present invention relates to the technical field of deep mine mining, and in particular to a mine shaft hoisting system and a mine shaft. Background Art

[0002] Skip hoisting systems in kilometer-deep or ultra-deep wells in metal and non-metal mines often utilize wire rope ways. These ropes are secured and tensioned using hydraulic tensioning devices aboveground and rope locks belowground. When the skip hoists operate at high speeds in kilometer-deep wells, the flexible wire ropes can experience lateral swing even when tension is sufficient. For wells exceeding 800 meters, overwinding and overrelease buffers must be installed in both the aboveground and underground overwinding sections.

[0003] The skip uses an upper plate braking system and must first pass through an underground over-discharge buffer support device before entering the loading section. Due to the swing of the wire rope, the minimum distance between the skip bearing seat and the over-discharge buffer claw is 10 cm, which is very easy to cause collisions. To avoid collisions, the skip must be decelerated in advance, reducing its crawling speed into the loading section. This results in long hoisting operations and low operating efficiency.

[0004] Therefore, it is necessary to solve the problem of shortening the lifting operation time and improving the operation efficiency under the premise of safe operation of the kilometer-deep well skip. Summary of the Invention

[0005] In order to solve the above problems, the present application provides a mine shaft hoisting system and a mine shaft.

[0006] The present application provides a mine shaft hoisting system, comprising a skip, a tank rope and an over-discharge buffer device, wherein the skip is arranged in a liftable manner in the shaft, the tank rope is arranged in the shaft, the tank rope is used to guide the skip, and the over-discharge buffer device is installed on a shaft bottom steel structure, the shaft bottom steel structure is distributed downward from a metering bucket point, and the over-discharge buffer device is lower than a normal parking position of the skip, wherein the crawling section of the skip is distributed in an area adjacent to the over-discharge buffer device, and the shaft bottom steel structure is limited to a mechanical property and an interaction force related to the over-discharge buffer device when the skip is over-discharged.

[0007] In some embodiments, the over-discharge buffer device is provided with at least two supporting claws, which are arranged in sequence and spaced apart along the circumference of the shaft, and are used to support the skip in the over-discharge state.

[0008] In some embodiments, a bearing seat is provided at the bottom of the bucket, and the bearing seat is used to connect with the supporting claws in an over-discharge state.

[0009] In some embodiments, the support seat has a first surface on the bottom side, the first surface is horizontally distributed, and the claw has a second surface on the top side, the second surface is horizontally distributed, and the second surface is used to directly contact the first surface in the over-discharge state.

[0010] In some embodiments, the supporting claw includes a base and a claw portion, the base is fixed relatively to the bottom steel structure, the claw portion is fixedly installed on a vertical side of the base, and the claw portion is used to support the bucket in an over-discharge state.

[0011] In some embodiments, the bottom shaft steel structure includes support beams and structural beams, wherein a plurality of support beams are relatively arranged and spaced vertically in sequence, and the structural beams are connected between the support beams, wherein the number of support beams is related to the interaction force between the bucket and the over-discharge buffer device when the bucket is over-discharged.

[0012] In some embodiments, both the support beams and the structural beams are made of channel steel.

[0013] In some embodiments, the over-discharge buffer device is welded to the bottom hole steel structure.

[0014] In some embodiments, the bottom of the tankway rope is hydraulically locked using a rope lock.

[0015] A mine shaft is equipped with the above-mentioned mine shaft hoisting system.

[0016] The beneficial effects of the present application are as follows: a mine shaft hoisting system is provided, including a skip, a tank rope and an over-discharge buffer device. The tank rope arranged in the shaft belongs to the structure of a wire rope tank rope, which is used to guide the skip and belongs to the existing equipment structure. The present application installs the over-discharge buffer device below the normal parking position of the skip, and the over-discharge buffer device is fixedly installed to the bottom steel structure distributed downward from the metering bucket point, so that the crawling section of the skip is distributed in the vicinity of the over-discharge buffer device; thereby, during the process of loading and unloading ore from the skip, the skip no longer passes through the over-discharge buffer device, which greatly reduces the crawling section of the skip. length, shortening the crawling time and improving the operating efficiency of the shaft hoisting system; on the other hand, the skip does not come into contact with the over-discharge buffer device during normal operation, reducing the impact on the shaft bottom steel structure, and the mechanical properties of the shaft bottom steel structure are related to the interaction force between the skip and the over-discharge buffer device when over-discharge occurs, thereby reducing the number of layers of support beams of the shaft bottom steel structure, reducing capital investment, and optimizing the shaft bottom steel structure; in addition, after the over-discharge buffer device is moved downward in the present application, the over-discharge buffer device and the metering bucket are not located at the same level, which is convenient for daily inspection and maintenance of the over-discharge buffer device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention.

[0018] Figure 1 A schematic diagram of the layout of a mine shaft hoisting system provided for this application;

[0019] Figure 2 A schematic diagram of the coordination between an over-discharge buffer device and a skip of a mine shaft hoisting system provided in this application;

[0020] Figure 3 This is a schematic diagram of the original layout of the shaft bottom steel structure;

[0021] Figure 4 A schematic diagram of the layout of the bottom steel structure of a mine shaft hoisting system provided in this application.

[0022] The attached drawings are marked with: 100- bucket, 110- bearing seat, 120- normal parking space, 200- over discharge buffer device, 210- supporting claw, 211- base, 212- claw, 300- bottom steel structure of the shaft, 310- supporting beam, 320- structural beam. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0024] In addition, this application may repeat reference numbers and / or reference letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, this application provides examples of various specific processes and materials, but those of ordinary skill in the art will recognize the application of other processes and / or the use of other materials.

[0025] The present application discloses a mine shaft hoisting system, which includes a skip 100, a tank rope and an over-discharge buffer device 200.

[0026] The skip 100 is a container for directly loading useful minerals, waste rock or gangue. It is located in a vertical shaft in a liftable manner and moves back and forth between the shaft mouth and the measuring bucket point. The measuring bucket is a device used to weigh the materials entering the skip 100 and is arranged deep in the vertical shaft. From the measuring bucket point downward, there is a bottom shaft steel structure 300. The bottom shaft steel structure 300 includes multiple layers of horizontal support beams 310 and structural beams 320 connected between the support beams 310. One of the uses of the bottom shaft steel structure 300 is to provide a working platform space at the bottom shaft. The number of layers of support beams 310 of the bottom shaft steel structure 300 is more than ten layers.

[0027] As described in the background, the mine shaft hoisting system provided in this application is targeted at mine shafts exceeding 800 meters in depth. A wire rope raceway is deployed in mine shafts exceeding 800 meters in depth, and the raceway ropes are used to guide the skip 100. When the skip 100 is operating at high speed in a kilometer-deep shaft, even if the raceway rope tension meets the requirements, the skip 100 will still swing laterally.

[0028] In the mine shaft hoisting system disclosed in this application, please refer to Figure 1 , Figure 1 The normal parking position 120 of the skip 100 is shown. The normal parking position 120 of the skip 100 means that the skip 100 is lowered to a position opposite to the measuring bucket. The skip 100 is actually slightly lower than the measuring bucket so that the material coming out of the measuring bucket can automatically move into the skip 100 under the action of gravity.

[0029] In the mine shaft hoisting system disclosed in this application, please refer to Figure 1 The over-discharge buffer device 200 is lower than the normal parking position 120 of the skip 100. The over-discharge buffer device 200 is fixedly installed to the bottom steel structure 300 distributed downward from the metering bucket point, so that the crawling section of the skip 100 is distributed in the vicinity of the over-discharge buffer device 200.

[0030] In the past, in mine shafts, an over-discharge buffer device 200 was placed at the metering bucket position. In this case, the bucket 100 used an upper plate braking method and had to pass through the over-discharge buffer device 200 before entering the loading section. The minimum distance between the support base 110 of the bucket 100 and the supporting claw 210 of the over-discharge buffer device 200 was about 10 cm. Due to the swing of the wire rope, the support base 110 of the bucket 100 and the supporting claw 210 of the over-discharge buffer device 200 were very likely to collide. To avoid collisions, the bucket 100 had to slow down in advance when approaching the metering bucket position, reducing the crawling speed of the bucket 100 into the loading section, resulting in long hoisting operation time and low operating efficiency.

[0031] However, the present application sets the over-discharge buffer device 200 below the metering bucket point and below the normal parking position 120 of the skip 100. Generally, the over-discharge buffer device 200 is set at a position about 1.9m below the normal parking position 120 of the skip 100. Based on the basic situation that the length of the skip 100 is about 16 meters, the over-discharge buffer device 200 in the original scheme is actually moved down by about 18m as a whole, and the length of the crawling section of 16m, which is equivalent to the length of the skip 100 in the original scheme, is reduced to about 3.5m. The crawling section in the present application refers to the path length of the skip 100 from the high-speed state to the normal parking position 120, which corresponds to the description of the crawling section of the skip 100 distributed in the vicinity of the over-discharge buffer device 200.

[0032] During the ore loading and unloading process, the skip 100 of the present invention no longer passes through the over-discharge buffer 200 and does not contact the claws 210 of the over-discharge buffer 200. The speed at which the skip 100 enters the loading crawling section is unaffected by mechanical equipment. By significantly reducing the length of the crawling section of the skip 100, the crawling time can be significantly shortened, thereby improving the operating efficiency of the shaft hoisting system.

[0033] On the other hand, the mechanical properties of the bottom steel structure 300 are related to the interaction force between the skip 100 and the over-discharge buffer device 200 when over-discharge occurs. In the past, vertical mine shafts employed a solution where the over-discharge buffer device 200 was located at the metering bucket. The over-discharge buffer device 200 was still attached to the bottom steel structure 300. Due to the swinging of the wire rope, the support base 110 of the skip 100 and the claw 210 of the over-discharge buffer device 200 were prone to collision, transmitting the interaction force to the bottom steel structure 300. To address this interaction force, the bottom steel structure 300 was designed with increased dimensions, strength, and rigidity. In the present application, the skip 100 does not come into contact with the over-discharge buffer device 200 during normal operation, thereby reducing the impact on the bottom shaft steel structure 300. This is reflected in that the number of layers of the support beams 310 of the bottom shaft steel structure 300 can be reduced on the basis of the above-mentioned previous mine shaft bottom shaft steel structure 300, and the specifications of the structural beams 320 are also reduced accordingly, which has the advantages of reducing capital investment and optimizing the bottom shaft steel structure 300.

[0034] In addition, after the over-discharge buffer device 200 is moved downward in the present application, the over-discharge buffer device 200 and the measuring hopper are not located at the same level, which facilitates daily inspection and maintenance of the over-discharge buffer device 200.

[0035] In some embodiments, see Figure 2 The over-discharge buffer device 200 is equipped with at least two supporting claws 210, which are spaced apart along the circumference of the shaft. The supporting claws 210 are used to support the bucket 100 in the over-discharge state. When the bucket 100 is in the normal parking position 120, a gap exists between the supporting claws 210 and the bucket 100, and the supporting claws 210 are spaced apart from the bucket 100. By specifically providing the supporting claws 210 that directly contact the bucket 100 in the over-discharge state, the supporting claws 210 can be structurally strengthened, thereby increasing the service life of the over-discharge buffer device 200.

[0036] In some embodiments, the bucket 100 is provided with a bearing seat 110 for the supporting claw 210 of the over-discharge buffer device 200. The bearing seat 110 is located at the bottom of the bucket 100. The bearing seat 110 is used to connect with the supporting claw 210 in the over-discharge state. At this time, the bucket 100 changes to a lower plate braking mode, and the moving speed of the bucket 100 in the loading crawling section is not affected by mechanical equipment, thereby shortening the crawling time and improving the operating efficiency of the shaft hoisting system.

[0037] In some embodiments, see Figure 2 The support base 110 has a first surface on its bottom side, which is horizontally distributed. The claw 210 has a second surface on its top side, which is also horizontally distributed and is used to directly contact the first surface in the over-discharge state. By limiting the first and second surfaces to be horizontally distributed, when over-discharge occurs, the interaction force between the support base 110 of the bucket 100 and the claw 210 of the over-discharge buffer device 200 is a vertical force. The impact force of the bucket 100 on the over-discharge buffer device 200 is a vertical force, which allows the bottom shaft steel structure 300 to be designed with corresponding structural strength only for vertical forces.

[0038] In previous mine shaft designs, where the over-discharge buffer device 200 was placed at the metering bucket point, the swinging of the wire rope caused the support base 110 of the skip 100 to collide with the claw 210 of the over-discharge buffer device 200. This impact force on the over-discharge buffer device 200 had a lateral component, requiring the shaft bottom steel structure 300 to be designed for both lateral and vertical components. In contrast, this solution only designs the shaft bottom steel structure 300 for vertical forces, further optimizing the steel structure and reducing capital investment.

[0039] In order to fully illustrate the effect of the present application scheme on the bottom steel structure 300, the present application discloses a comparative example, please refer to Figure 3 and Figure 4 , Figure 3 This is a schematic diagram of the original layout of the shaft bottom steel structure 300. Figure 4 The layout diagram provided for this application, Figure 3 The number of layers of the support beams 310 in the embodiment is 15, while the number of layers of the support beams 310 in the present application is reduced to 13.

[0040] In some embodiments, the bottom shaft steel structure 300 includes a support beam 310 and a structural beam 320. A plurality of support beams 310 are relatively arranged and spaced vertically in sequence. The structural beams 320 are connected between the support beams 310. The number of support beams 310 is related to the interaction force between the bucket 100 and the over-discharge buffer device 200 when over-discharge occurs.

[0041] Please compare Figure 3 and Figure 4 ,exist Figure 3 In the original layout of the shaft bottom steel structure 300 shown in FIG, the steel beams need to be large I-beams. Figure 4In the illustrated embodiment of the present invention, both support beam 310 and structural beam 320 are made of channel steel. Due to the aforementioned structural features, channel steel can be used as an embodiment of support beam 310 and structural beam 320. Using channel steel as an embodiment of support beam 310 and structural beam 320 has the advantages of relatively small space occupation, relatively low installation difficulty, and reduced installation workload.

[0042] In some embodiments, see Figure 2 The claw 210 includes a base 211 and a claw portion 212. The base 211 is mounted on the main structure of the over-discharge buffer device 200. The main structure of the over-discharge buffer device 200 is fixedly connected to the bottom steel structure 300, so that the base 211 and the bottom steel structure 300 are relatively fixed. The claw portion 212 is fixedly mounted on a vertical side of the base 211 and is used to support the bucket 100 in the over-discharge state.

[0043] In some embodiments, the over-discharge buffer device 200 is welded to the bottom well steel structure 300 , which is beneficial to the stable installation of the over-discharge buffer device 200 .

[0044] In some embodiments, the bottom of the tank rope is hydraulically locked using a rope locker. The inventor pointed out that in existing mine shafts exceeding 800 meters, the bottom of the tank rope is generally fixed in two ways, one is locking with a heavy hammer, and the other is hydraulic locking. When the bottom of the tank rope is hydraulically locked, the above-mentioned bearing seat 110 of the skip 100 and the supporting claw 210 of the over-discharge buffer device 200 will easily collide with each other.

[0045] The present application also seeks protection for a mine shaft equipped with the above-mentioned mine shaft hoisting system, which has the beneficial effect of significantly shortening the crawling time and improving the operating efficiency of the shaft hoisting system by greatly reducing the length of the crawling section of the skip 100; reducing the number of layers of the support beams 310 of the bottom steel structure 300 on the basis of the above-mentioned previous mine shaft, and correspondingly reducing the specifications of the structural beams 320, thereby reducing capital investment and optimizing the bottom steel structure 300; the over-discharge buffer device 200 is not located at the same level as the metering bucket, which facilitates daily inspection and maintenance of the over-discharge buffer device 200.

[0046] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0047] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0048] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A mine shaft hoisting system, characterized in that: include: The skip is installed in the vertical shaft in a manner that it can be raised and lowered; A tank rope is arranged in the vertical shaft and is used to guide the skip; An over-discharge buffer device is installed on the bottom steel structure of the well, and the bottom steel structure is distributed downward from the measuring bucket point. The over-discharge buffer device is lower than the normal parking position of the skip; The crawling section of the skip is distributed in the vicinity of the over-discharge buffer device, and the bottom steel structure is defined as being related to mechanical properties and the interaction force between the skip and the over-discharge buffer device when over-discharge occurs.

2. The mine shaft hoisting system according to claim 1, characterized in that: The over-discharge buffer device is provided with at least two supporting claws, which are arranged in sequence and spaced apart along the circumference of the shaft, and are used to support the skip in the over-discharge state.

3. The mine shaft hoisting system according to claim 2, characterized in that: The bucket is provided with a bearing seat at the bottom, and the bearing seat is used for connecting with the supporting claw in an over-discharging state.

4. The mine shaft hoisting system according to claim 3, characterized in that: The supporting seat is provided with a first surface on the bottom side, the first surface is distributed horizontally, and the supporting claw is provided with a second surface on the top side, the second surface is distributed horizontally, and the second surface is used to directly contact the first surface in the over-discharge state.

5. The mine shaft hoisting system according to claim 2, characterized in that: The supporting claws include: A base body, fixed relatively to the bottom steel structure; The claw portion is fixedly mounted on one vertical side of the base body and is used for supporting the bucket in an over-discharge state.

6. The mine shaft hoisting system according to any one of claims 1 to 5, characterized in that: The bottom steel structure includes: A plurality of support beams are arranged relatively to each other and spaced vertically in sequence; a structural beam connected between the support beams; The number of the support beams is related to the interaction force between the bucket and the over-discharge buffer device when the bucket is over-discharged.

7. The mine shaft hoisting system according to claim 6, characterized in that: The support beam and the structural beam are both made of channel steel.

8. The mine shaft hoisting system according to claim 1, characterized in that: The over-discharge buffer device is welded to the bottom steel structure.

9. The mine shaft hoisting system according to claim 1, characterized in that: The bottom of the tank rope is hydraulically locked using a rope locker.

10. A mine shaft, characterized in that: A mine shaft hoisting system according to any one of claims 1 to 9 is installed.

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