A large mine hoist

Abstract

The present application relates to a kind of large mining hoist.It solves the technical problems that the existing head shaft only unilateral input torque causes the force imbalance of the both ends of head shaft, the poor hopper connection structure affects normal use, etc.It includes hoist shell, the inside of hoist shell is equipped with several vertical hopper chain groups along the height direction of hoist shell, several hopper structures are sequentially arranged on the hopper chain group through hopper connection structure along the length direction of hopper chain group, and the upper end of hoist shell is equipped with double-power driving mechanism connected with hopper chain group to drive hopper structure to move along the length direction of hopper chain group.The advantages are that double-power driving mechanism is adopted, hopper driving assembly is arranged at the both ends of head shaft body, synchronous input torque at both ends is realized, independent driving motor at both ends cooperates with reduction gearbox to output power, impact load is shared by both ends driving assembly when heavy load starts or material is blocked, impact on single driving component is greatly reduced, and the operation reliability of whole machine is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of hoisting equipment, specifically relating to a large-scale mining hoist. Background Technology

[0002] Bucket elevators are widely used for vertical continuous conveying of ores and minerals. Large mining elevators, in particular, need to withstand harsh mining environments with large tonnage, high abrasion, and frequent impact loads, which places high demands on the overall structural strength, transmission reliability, bucket connection stability, and ease of maintenance. Most existing large plate chain mining hoists adopt a single-end drive structure, relying on a single-sided motor reducer to drive the head shaft to complete the rotation operation. However, under heavy load mining conditions, the head shaft only inputs torque on one side, resulting in uneven force on both ends of the head shaft. The shaft body is prone to fatigue damage due to long-term alternating loads, and it can also cause uneven torque distribution and transmission system vibration. At the same time, when the equipment starts under heavy load or a material jamming failure occurs, the system will generate huge impact loads, and the drive components such as the drive motor and reducer are easily damaged. The probability of equipment failure and downtime is high, which cannot meet the continuous production operation requirements of large-capacity mines. Furthermore, the existing buckets are generally directly welded or fixed to the outer chain plate of the chain with simple ear plates and bolts. During the ore hoisting operation, the buckets are continuously subjected to the impact of scooping material, material friction, and vibration of the whole machine operation. The traditional connecting ear plates are subjected to concentrated force, and under alternating loads, the weld is prone to cracking, and in severe cases, the buckets may fall off. Summary of the Invention

[0003] The purpose of this invention is to address the above-mentioned problems by providing a large-scale mining hoist.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a large mining hoist, comprising a hoist casing, wherein the inner side of the hoist casing is provided with several bucket chain groups vertically arranged along the height direction of the hoist casing, and the bucket chain groups are provided with several bucket structures arranged sequentially along the length direction of the bucket chain groups through bucket connecting structures, and the upper end of the hoist casing is provided with a dual-power drive mechanism connected to the bucket chain groups, thereby driving the bucket structures to move along the length direction of the bucket chain groups. Multiple bucket chain groups can be configured to accommodate more buckets, increasing the material conveying capacity per unit time and adapting to the high-capacity conveying conditions of large mines; the bucket connecting structures are independently set, so the buckets are not directly attached to the chain body, achieving force decoupling between the buckets and the chain, reducing the load on the chain body; the dual-power drive mechanism, unlike traditional single-end drive, provides a basis for balanced torque input under heavy loads, improves the force on the drive end, and reduces the risk of shaft breakage and overload damage.

[0005] In the aforementioned large-scale mining hoist, the bucket chain assembly has two bucket chains with a bucket installation space between them. Each bucket chain has several chain plate assemblies, each chain plate assembly having two pins. An inner chain plate is located between the same end of the two pins, and an outer chain plate is located between the same end of two adjacent chain plate assemblies. The outer chain plates on the side of the bucket chain closest to the bucket installation space are arranged at intervals. The double-chain clamping arrangement places the bucket between the two chains, distributing the force evenly on both sides, resulting in smooth bucket operation and reducing the likelihood of unilateral swaying. A dedicated bucket installation space is provided, with the bucket fully embedded between the chains, minimizing outward protrusion and reducing the probability of scratching the machine casing during operation. Assembly gaps are left between adjacent outer chain plates to provide installation positions for bucket connecting plates. This eliminates the need to modify the basic chain pin structure, allowing for direct modification based on a standard chain structure, resulting in good chain versatility.

[0006] In the aforementioned large-scale mining hoist, the bucket connection structure includes a bucket connecting plate disposed on the side of the bucket chain near the bucket installation space and located between two adjacent outer chain plates. Both ends of the bucket connecting plate are connected to pin shafts of two adjacent chain plate groups, and the end of the bucket structure is connected to the bucket connecting plate. The load acts directly on the pin shafts, without relying on the outer chain plates to bear the impact load from the bucket, thus solving the defects of stress concentration and cracking deformation of the outer chain plates under bucket loads in traditional solutions.

[0007] In the aforementioned large-scale mining hoist, the bucket connecting plate has a pin shaft connecting part in the middle. Both ends of the pin shaft connecting part have pin shaft connecting holes corresponding to the pin shaft body. On both sides of the pin shaft connecting part are outwardly inclined oblique connecting parts. On the side of the oblique connecting part away from the pin shaft connecting part, bucket connecting parts are located at both ends, and the inner side of the bucket connecting part has bucket connecting holes corresponding to the bucket structure. The central pin shaft connecting part connects two pin shafts across two holes, achieving two-point positioning. The connecting plate itself is reliably positioned and has strong torsional resistance. The outwardly inclined oblique connecting parts form a cantilever-like transition structure, which can disperse and buffer the impact and vibration loads from the bucket scooping material, avoiding stress concentration at the pin shaft connecting hole position and improving the fatigue resistance of the connecting plate. The bucket connecting parts on both sides fix the bucket at two points, resulting in balanced force distribution on the bucket compared to single-point fixing, making it less prone to shaking or torsion during operation. The bucket connecting holes allow for detachable bolt connections. When the bucket wears out, there is no need to disassemble the chain; the bucket can be replaced simply by removing the bolts, shortening maintenance time.

[0008] In the aforementioned large mining hoist, the dual-power drive mechanism includes a head shaft that is laterally disposed on the inner side of the upper end of the hoist casing and extends axially to the outer side of the hoist casing at both ends. Each end of the head shaft is provided with a bucket drive assembly. The head shaft has a structure where the diameter gradually decreases from the middle to the ends, resulting in a thicker middle and thinner ends. Each end of the head shaft has a force-bearing wheel mounting portion and a head shaft drive portion. Each end of the force-bearing wheel mounting portion is provided with a force-bearing wheel corresponding to the bucket chain. The force-bearing wheel mounting portion has several force-bearing wheel slots corresponding to and capable of fixing the force-bearing wheels. Furthermore, the outer circumferential side of the force-bearing wheel is provided with several force-bearing wheel teeth connected to the bucket chain. The head shaft extends out of the housing at both ends, enabling synchronous drive from both ends. Torque is transmitted from both ends of the shaft to the middle simultaneously, solving the problem of uneven stress and fatigue damage caused by unidirectional torque transmission from a single end. The variable diameter shaft structure, thicker in the middle and thinner at both ends, has a larger cross-section in the middle bearing area, resulting in higher bending strength. This adapts to the bending moment distribution under heavy loads, optimizes the stress distribution of the shaft, and extends the service life of the main shaft. A groove is set in the force-bearing wheel to limit the circumferential movement of the force-bearing wheel relative to the shaft body, preventing circumferential slippage and axial movement, ensuring the meshing accuracy of the teeth and chain, and reducing tooth skipping and uneven wear. The force-bearing wheel and the head shaft body are assembled separately, so if an individual force-bearing wheel is damaged, it can be replaced individually without replacing the entire head shaft, reducing spare parts costs.

[0009] In the aforementioned large-scale mining hoist, the bucket drive assembly includes a drive mounting platform located circumferentially outward on the upper end of the hoist casing. The drive mounting platform has reduction gearboxes at both ends corresponding to the head shaft drive unit. One end of each reduction gearbox is connected to the drive slot of the head shaft drive unit via a shaft assembly, and the other end is connected to a drive motor. The head shaft has a bearing seat fixed to the drive mounting platform at the end near the shaft assembly. The drive assembly is externally mounted, not occupying internal space within the casing. Maintenance of the motor and reducer does not require disassembling the casing, providing ample maintenance space. With independent motors and reduction gearboxes at both ends, impact loads are shared by the two drive assemblies, reducing the impact load on a single motor or reducer and minimizing the probability of overload damage. The shaft assembly, in conjunction with the drive slot, transmits torque, facilitating assembly and disassembly of the drive components and the head shaft. The bearing seat, fixed to the drive mounting platform, forms an independent support, reducing the load on the casing from the head shaft and minimizing coaxiality deviations caused by casing deformation.

[0010] In the aforementioned large-scale mining hoist, the bucket structure includes a bucket shell with a bucket cavity, disposed within the bucket installation space. The bucket shell has a curved plate and a receiving plate opposite to the curved plate. The lower end of the curved plate has an arc-shaped curved portion connected to the lower end of the receiving plate. The side portions of the curved plate and the receiving plate are connected by corresponding side plates. A bucket fixing portion corresponding to the bucket connection portion is provided on the side of the side plate away from the bucket cavity. The bucket connection hole is connected to the bucket fixing portion by connecting bolts. The lower end uses an arc-shaped curved portion for transition, eliminating right-angle dead angles, reducing residual material accumulation, ensuring more thorough unloading, and reducing material return. The connection points are arranged on the bucket fixing portions of the side plates on both sides, resulting in double-sided force distribution on the bucket body. Compared to a single-point connection on the bucket back, this provides more balanced force distribution and reduces the likelihood of twisting during material scooping. The entire bucket body is placed in the bucket installation space between two chains, with most of the bucket body protected by the chains, reducing impact and wear on the sides of the bucket body from materials.

[0011] In the aforementioned large-scale mining hoist, the upper end of the bucket shell has a bucket opening communicating with the bucket cavity. The upper end of the receiving plate has a wear-resistant edge inclined towards the bending plate. Several reinforcing ribs perpendicular to the bending plate or the receiving plate are provided in the middle of the bucket opening. One end of each reinforcing rib is connected to the upper end of the receiving plate and / or the wear-resistant edge, and the other end extends downwards inclinedly and is connected to the bending plate. The wear-resistant edge at the upper end of the receiving plate is located in the area where ore directly impacts and rubs during scooping. This edge can withstand high-frequency impact wear, delaying bucket mouth wear and extending bucket life. The two ends of the reinforcing ribs are connected to the upper part of the bucket mouth and the bending plate, forming a triangular support structure. This significantly improves the structural rigidity of the bucket opening, resisting bucket mouth overturning, deformation, and cracking caused by ore impact. Simultaneously, the downwardly inclined arrangement of the ribs prevents material accumulation and avoids material buildup and wear due to rib jamming.

[0012] In the aforementioned large mining hoist, the upper end of the hoist casing is provided with a head casing, the drive mounting platform is located on the outer periphery of the head casing, a material discharge port is provided on one side below the head casing, a tail casing is provided at the lower end of the hoist casing, and several standard sections are arranged vertically in sequence between the head casing and the tail casing. Several material inlets are provided on one side of the lowest standard section, and several maintenance ports are provided on one side of one of the upper standard sections.

[0013] In the aforementioned large mining hoist, the inner side of the tail housing is provided with several horizontally arranged tail shaft connecting rods that correspond one-to-one with the bucket chain assembly. The tail shaft connecting rods are provided with tail shaft bodies, and a universal coupling is provided between two tail shaft bodies. The tail shaft bodies are respectively provided with counterweight wheels at both ends, which are connected to the end of the bucket chain away from the force-bearing wheel.

[0014] Compared with existing technologies, the advantages of this invention are:

[0015] 1. The device adopts a dual-power drive mechanism, with hopper drive components configured at both ends of the head shaft to achieve synchronous torque input at both ends. The independent drive motors at both ends work together with the reduction gearbox to output power. During heavy-load start-up or material jamming, the impact load is shared by the drive components at both ends, which greatly reduces the impact on individual drive components, reduces the probability of damage to motors and reducers, and improves the overall reliability of the machine.

[0016] 2. The head shaft of this device adopts a variable diameter structure with a thicker middle and thinner ends. The middle position of the shaft has higher strength, and the load-bearing capacity of the load-bearing wheel mounting part is strong. It effectively improves the stress distribution of the head shaft under heavy load conditions, avoids uneven force and fatigue damage to the head shaft caused by single-end drive, and reduces the risk of transmission vibration.

[0017] 3. The bucket connecting plate of the bucket chain assembly of this device is assembled between adjacent outer chain plates and directly connected to the pin shaft of the chain plate assembly. It does not rely on the outer chain plate to bear the bucket load. The load is directly transmitted to the pin shaft, avoiding the problems of stress concentration and weld cracking of the outer chain plate caused by the traditional bucket being directly fixed to the outer chain plate.

[0018] 4. The hopper connecting plate of this device is equipped with a pin connection part, an inclined connection part, and a hopper connection part. The inclined connection part can disperse the impact and vibration load of scooping material during the operation of the hopper and improve the stress state of the bolt connection position. At the same time, the hopper connecting plate and the hopper structure are connected by bolts for easy disassembly and alignment. As a vulnerable part, the hopper can be quickly disassembled and replaced, shortening maintenance downtime. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention.

[0020] Figure 2 This is a structural cross-sectional view of the present invention.

[0021] Figure 3 This is a schematic diagram of the dual-power drive mechanism in this invention.

[0022] Figure 4 This is a schematic diagram of the head shaft in this invention.

[0023] Figure 5 This is a schematic diagram of the chain plate assembly in this invention.

[0024] Figure 6 This is a schematic diagram of the hopper connecting plate in this invention.

[0025] Figure 7 This is a schematic diagram of the hopper shell in this invention.

[0026] Figure 8 This is a cross-sectional view of the hopper shell in this invention.

[0027] Figure 9 This is a diagram showing the internal structure of the tail shell in this invention.

[0028] Figure 10 This is the invention Figure 2 A schematic diagram of the structure at point A in the middle.

[0029] Figure 11 This is the invention Figure 2 A schematic diagram of the structure at point B.

[0030] In the diagram: 1. Hoist housing; 11. Head housing; 12. Discharge port; 13. Tail housing; 14. Standard section; 15. Feed inlet; 16. Maintenance port; 17. Tail shaft connecting rod; 18. Tail shaft body; 19. Universal coupling; 20. Counterweight wheel; 21. Bucket chain assembly; 22. Bucket chain; 23. Chain plate assembly; 24. Pin shaft body; 25. Inner chain plate; 26. Outer chain plate; 37. Bucket connecting structure; 38. Bucket connecting plate; 39. Pin shaft connecting part; 30. Pin shaft connecting hole; 31. Angled connecting part; 32. Bucket connecting part; 33. Bucket connecting hole; 34. Bucket connecting part; 35. Bucket connecting hole; 36. Bucket. Structure 4, Hopper shell 41, Hopper cavity 42, Bending plate 43, Receiving plate 44, Bending part 45, Side plate 46, Hopper fixing part 47, Hopper opening 48, Wear-resistant edge 49, Reinforcing rib plate 50, Dual power drive mechanism 5, Head shaft body 51, Force wheel mounting part 52, Head shaft drive part 53, Force wheel 54, Force wheel slot 55, Force wheel teeth 56, Drive slot 57, Hopper drive assembly 6, Drive mounting platform 61, Gearbox 62, Shaft assembly 63, Drive motor 64, Bearing seat 65. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0032] like Figure 1-11 As shown, a large mining hoist includes a hoist casing 1. Inside the hoist casing 1, several bucket chain assemblies 2 are vertically arranged along the height direction of the hoist casing 1. Several bucket structures 4 are sequentially arranged along the length direction of the bucket chain assemblies 2 via bucket connecting structures 3. A dual-power drive mechanism 5 is located at the upper end of the hoist casing 1, connected to the bucket chain assemblies 2, thereby driving the bucket structures 4 to move along the length direction of the bucket chain assemblies 2. Multiple bucket chain assemblies 2 can be configured with more buckets, increasing the material conveying capacity per unit time and adapting to the high-capacity conveying conditions of large mines. The independently set bucket connecting structures 3 prevent the buckets from directly attaching to the chain body, achieving force decoupling between the buckets and the chain, reducing the load on the chain body. The dual-power drive mechanism 5, unlike traditional single-end drives, provides a basis for balanced torque input under heavy loads, improves the force on the drive end, and reduces the risk of shaft breakage and overload damage.

[0033] Combination Figure 2 , Figure 5 and Figure 6 As shown, the hopper chain assembly 2 has two hopper chains 21, with a hopper installation space between them. Each hopper chain 21 has several chain plate assemblies 22, and each chain plate assembly 22 has two pin shafts 23. An inner chain plate 24 is provided between the same end of the two pin shafts 23, and an outer chain plate 25 is provided between the same end of two adjacent chain plate assemblies 22. The outer chain plates 25 on the side of the hopper chain 21 closest to the hopper installation space are arranged alternately. The double-chain clamping arrangement places the hopper between the two chains, distributing the force evenly on both sides, resulting in smooth hopper operation and reducing the likelihood of unilateral swaying. A dedicated hopper installation space is reserved, allowing the hopper to be fully embedded between the chains, minimizing outward protrusion and reducing the probability of scratching the machine casing during operation. An assembly space is left between adjacent outer chain plates 25 to provide an installation position for the hopper connecting plate 31. This eliminates the need to modify the basic chain pin structure, allowing for direct modification based on a standard chain structure, resulting in good chain versatility.

[0034] The hopper connecting structure 3 includes a hopper connecting plate 31 located on the side of the hopper chain 21 near the hopper installation space and between two adjacent outer chain plates 25. Both ends of the hopper connecting plate 31 are connected to the pin shafts 23 of the two adjacent chain plate groups 22, and the end of the hopper structure 4 is connected to the hopper connecting plate 31. The load acts directly on the pin shafts 23, without relying on the outer chain plates 25 to bear the hopper impact load, thus solving the defects of stress concentration and cracking deformation of the outer chain plates 25 under hopper load in traditional solutions.

[0035] Specifically, the hopper connecting plate 31 has a pin connecting part 32 in the middle, and the two ends of the pin connecting part 32 are respectively provided with pin connecting holes 33 corresponding to the pin body 23. The two sides of the pin connecting part 32 are respectively provided with outwardly inclined connecting parts 34. The two ends of the inclined connecting parts 34 away from the pin connecting part 32 are respectively provided with hopper connecting parts 35, and the inner side of the hopper connecting part 35 is provided with hopper connecting holes 36 corresponding to the hopper structure 4. The central pin connection 32 connects two pins through double holes, achieving two-point positioning. The connection plate itself is firmly positioned and has strong torsional resistance. The outwardly inclined oblique connection 34 forms a cantilever-like transition structure, which can disperse and buffer the impact and vibration loads of the hopper scooping material, avoiding stress concentration at the pin connection hole 33 and improving the fatigue resistance of the connection plate. Hopper connection parts 35 are set on both sides, and the hopper is fixed at two points on both sides. Compared with single-point fixing, the hopper is subjected to balanced force and is less prone to shaking or torsion during operation. Hopper connection holes 36 are set to achieve detachable bolt connection. After the hopper is worn, there is no need to disassemble the chain. The hopper can be replaced by directly removing the bolts, which shortens the maintenance time.

[0036] Combination Figure 1 , Figure 3 , Figure 4 and Figure 10 As shown, the dual-power drive mechanism 5 includes a head shaft 51 that is laterally arranged on the inner side of the upper end of the elevator housing 1 and extends axially to the outer side of the elevator housing 1 at both ends. The head shaft 51 is provided with a bucket drive assembly 6 at both ends. The diameter of the head shaft 51 gradually decreases from the middle to the two ends, forming a structure that is thick in the middle and thin at both ends. The head shaft 51 has a force-bearing wheel mounting part 52 at both ends and a head shaft drive part 53 at both ends. The force-bearing wheel mounting part 52 is provided with a force-bearing wheel 54 corresponding to the bucket chain 21 at both ends. The force-bearing wheel mounting part 52 is provided with a plurality of force-bearing wheel slots 55 that correspond to the force-bearing wheel 54 and can fix the force-bearing wheel 54. The force-bearing wheel 54 is provided with a plurality of force-bearing wheel teeth 56 connected to the bucket chain 21 on the outer circumference of the outer side. The head shaft extends out of the housing at both ends, enabling synchronous drive from both ends. Torque is transmitted from both ends of the shaft to the middle simultaneously, solving the problem of uneven stress and fatigue damage caused by unidirectional torque transmission from a single end. The variable diameter shaft structure, thicker in the middle and thinner at both ends, has a larger cross-section in the middle bearing area, resulting in higher bending strength. This adapts to the bending moment distribution under heavy loads, optimizes the stress distribution of the shaft, and extends the service life of the main shaft. The force-bearing wheel slot 55 provides circumferential restraint for the force-bearing wheel 54, preventing circumferential slippage and axial movement of the force-bearing wheel 54 relative to the shaft body. This ensures the meshing accuracy of the teeth and chain, reducing tooth skipping and uneven wear. The force-bearing wheel 54 is assembled separately from the head shaft body 51. If an individual force-bearing wheel 54 is damaged, it can be replaced individually without replacing the entire head shaft, reducing spare parts costs.

[0037] The bucket drive assembly 6 includes a drive mounting platform 61 located on the outer circumferential side of the upper end of the elevator housing 1. At both ends of the drive mounting platform 61 are reduction gearboxes 62 corresponding to the head shaft drive unit 53. One end of each reduction gearbox 62 is connected to the drive slot 57 of the head shaft drive unit 53 via a shaft assembly 63, and the other end is connected to a drive motor 64. The head shaft 51, near the shaft assembly 63, has a bearing seat 65 fixed to the drive mounting platform 61. The drive assembly is externally mounted, not occupying internal space within the housing. Maintenance of the motor and reducer does not require disassembling the housing, providing ample maintenance space. With independent motors and reduction gearboxes 62 at both ends, impact loads are shared by the two drive assemblies, reducing the impact load on a single motor or reducer and decreasing the probability of overload damage. The shaft assembly 63, in conjunction with the drive slot 57, transmits torque, facilitating easy assembly and disassembly of the drive components and head shaft. The bearing seat 65, fixed to the drive mounting platform 61, forms an independent support, reducing the load of the head shaft on the housing and minimizing coaxiality deviations caused by housing deformation.

[0038] Combination Figure 2 , Figure 7 and Figure 8As shown, the hopper structure 4 includes a hopper shell 41 disposed in the hopper installation space and having a hopper cavity 42. The hopper shell 41 has a curved plate 43 and a receiving plate 44 disposed opposite to the curved plate 43. The lower end of the curved plate 43 has an arc-shaped curved portion 45 connected to the lower end of the receiving plate 44. The side portions of the curved plate 43 and the side portions of the receiving plate 44 are respectively connected by corresponding side plates 46. The side of the side plate 46 away from the hopper cavity 42 is provided with a hopper fixing portion 47 corresponding to the hopper connecting portion 35. The hopper connecting hole 36 is connected to the hopper fixing portion 47 by connecting bolts. The lower end adopts an arc-shaped bend 45 transition, without right-angle dead corners, reducing residual material accumulation, making unloading more thorough and reducing material return; the connection point is arranged in the hopper fixing part 47 on both side plates 46, the hopper body is subjected to force on both sides, compared with the single-point connection on the back of the hopper, the hopper is subjected to more balanced force, and it is not easy to twist when scooping material; the entire hopper body is placed in the hopper installation space between the two chains, and most of the hopper body is protected by the chains, reducing the impact and wear of materials on the sides of the hopper body.

[0039] The hopper shell 41 has a hopper opening 48 at its upper end, which communicates with the hopper cavity 42. The receiving plate 44 has a wear-resistant edge 49 at its upper end, which is inclined towards the bending plate 43. The hopper opening 48 has several reinforcing ribs 50 in the middle, which are perpendicular to the bending plate 43 or the receiving plate 44. One end of the reinforcing rib 50 is connected to the upper end of the receiving plate 44 and / or the wear-resistant edge 49, and the other end of the reinforcing rib 50 extends downward at an incline and is connected to the bending plate 43. The wear-resistant edge 49 is provided at the upper end of the receiving plate 44. This position is the area where the ore directly impacts and rubs during scooping. The wear-resistant edge 49 can withstand high-frequency impact wear, delay the wear of the hopper opening, and extend the hopper life. The two ends of the reinforcing rib 50 are respectively connected to the upper part of the hopper opening and the bending plate 43, forming a triangular support structure. This greatly improves the structural rigidity of the hopper opening 48, resists the outward turning, deformation, and cracking of the hopper opening caused by ore impact. At the same time, the ribs are arranged at an incline downward, which makes it difficult for material to accumulate and prevents material accumulation and wear caused by the ribs jamming the material.

[0040] like Figure 1 As shown, the upper end of the elevator housing 1 is provided with a head housing 11, and the drive mounting platform 61 is located on the outer side of the head housing 11. A material discharge port 12 is provided on one side below the head housing 11. The lower end of the elevator housing 1 is provided with a tail housing 13. Several standard sections 14 are arranged vertically in sequence between the head housing 11 and the tail housing 13. Several feed ports 15 are provided on one side of the lowest standard section 14, and several maintenance ports 16 are provided on one side of one of the upper standard sections 14.

[0041] Combination Figure 9 and Figure 11As shown, the inner side of the tail housing 13 is provided with several horizontally arranged tail shaft connecting rods 17 that correspond one-to-one with the bucket chain group 2. The tail shaft connecting rods 17 are provided with tail shaft bodies 18. A universal coupling 19 is provided between the two tail shaft bodies 18. The tail shaft bodies 18 are respectively provided with counterweight wheels 20 at both ends, which are connected to the end of the bucket chain 21 away from the force wheel 54.

[0042] The principle of this embodiment is as follows:

[0043] The drive motors 64 on both sides of the upper end of the hoist casing 1 provide power. After being reduced in speed and torque by the reduction gearbox 62, the head shaft 51 is driven to rotate synchronously through the shaft assembly 63. The head shaft 51 adopts a structure design that is thick in the middle and thin at both ends to optimize the force. The force wheel 54 on it is fixed by the force wheel slot 55. The teeth 56 of the force wheel are precisely engaged with the bucket chain 21. The head shaft 51 drives the force wheel 54 to rotate, driving the bucket chain 21 to make a closed-loop cycle in the vertical direction. The chain is tensioned and guided by the counterweight wheel 20 in the tail casing 13 to form a complete transmission circuit. The material enters from the feed port 15 of the lower standard section 14 and is caught by the bucket structure 4 that circulates to the bottom. The bucket is fixed to the chain by a special bucket connection structure 3 and moves upward with the chain. When the bucket reaches the top and flips around the force wheel 54, the material is discharged from the drop port 12 on one side of the head casing 11 under the action of centrifugal force and gravity.

[0044] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

[0045] Although this article extensively uses terms such as hoist casing 1, head casing 11, discharge port 12, tail casing 13, standard section 14, feed port 15, maintenance port 16, tail shaft connecting rod 17, tail shaft body 18, universal coupling 19, counterweight wheel 20, bucket chain assembly 2, bucket chain 21, chain plate assembly 22, pin shaft body 23, inner chain plate 24, outer chain plate 25, bucket connecting structure 3, bucket connecting plate 31, pin shaft connecting part 32, pin shaft connecting hole 33, inclined connecting part 34, bucket connecting part 35, bucket connecting hole 36, bucket structure 4, bucket The terms used include: shell 41, hopper cavity 42, bending plate 43, receiving plate 44, bending part 45, side plate 46, hopper fixing part 47, hopper opening 48, wear-resistant edge 49, reinforcing rib plate 50, dual-power drive mechanism 5, head shaft body 51, force-bearing wheel mounting part 52, head shaft drive part 53, force-bearing wheel 54, force-bearing wheel slot 55, force-bearing wheel teeth 56, drive slot 57, hopper drive assembly 6, drive mounting platform 61, reduction gearbox 62, shaft assembly 63, drive motor 64, bearing seat 65, etc., but the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. A large mining hoist, comprising a hoist casing (1), characterized in that, The inner side of the elevator housing (1) is provided with several bucket chain groups (2) arranged vertically along the height direction of the elevator housing (1). The bucket chain groups (2) are provided with several bucket structures (4) arranged sequentially along the length direction of the bucket chain groups (2) through the bucket connecting structure (3). The upper end of the elevator housing (1) is provided with a dual-power drive mechanism (5) that is connected to the bucket chain groups (2) and drives the bucket structures (4) to move along the length direction of the bucket chain groups (2).

2. A large mining hoist according to claim 1, characterized in that, The hopper chain assembly (2) has two hopper chains (21), and there is a hopper installation space between the two hopper chains (21). The hopper chain (21) has several chain plate assemblies (22). The chain plate assemblies (22) have two pin shafts (23). An inner chain plate (24) is provided between the same end of the two pin shafts (23). An outer chain plate (25) is provided between the same end of two adjacent chain plate assemblies (22). The outer chain plates (25) of the hopper chain (21) on the side close to the hopper installation space are arranged in sequence at intervals.

3. A large mining hoist according to claim 2, characterized in that, The hopper connection structure (3) includes a hopper connection plate (31) located on the side of the hopper chain (21) near the hopper installation space and between two adjacent outer chain plates (25). The two ends of the hopper connection plate (31) are respectively connected to the pin shafts (23) of two adjacent chain plate groups (22), and the end of the hopper structure (4) is connected to the hopper connection plate (31).

4. A large mining hoist according to claim 3, characterized in that, The hopper connecting plate (31) is provided with a pin connecting part (32) in the middle. The pin connecting part (32) is provided with pin connecting holes (33) corresponding to the pin body (23) at both ends. The pin connecting part (32) is provided with inclined connecting parts (34) on both sides. The inclined connecting parts (34) are provided with hopper connecting parts (35) at both ends on the side away from the pin connecting part (32). The hopper connecting part (35) is provided with hopper connecting holes (36) corresponding to the hopper structure (4) on the inner side.

5. A large mining hoist according to claim 2, 3, or 4, characterized in that, The dual-power drive mechanism (5) includes a head shaft (51) that is laterally arranged on the inner side of the upper end of the hoist housing (1) and axially extends to the outer side of the hoist housing (1) at both ends. The head shaft (51) is provided with a bucket drive assembly (6) at both ends. The diameter of the head shaft (51) gradually decreases from the middle to the two ends, forming a structure that is thick in the middle and thin at both ends. The head shaft (51) has a force-bearing wheel mounting part (52) at both ends. The head shaft (51) has a head shaft drive part (53) at both ends. The force-bearing wheel mounting part (52) is provided with a force-bearing wheel (54) corresponding to the bucket chain (21) at both ends. The force-bearing wheel mounting part (52) is provided with a plurality of force-bearing wheel slots (55) that correspond to the force-bearing wheel (54) and can fix the force-bearing wheel (54). The force-bearing wheel (54) is provided with a plurality of force-bearing wheel teeth (56) connected to the bucket chain (21) on the outer circumferential side.

6. A large mining hoist according to claim 5, characterized in that, The bucket drive assembly (6) includes a drive mounting platform (61) located on the outer side of the upper end of the elevator housing (1). The drive mounting platform (61) has a reduction gearbox (62) at both ends corresponding to the head shaft drive unit (53). One end of the reduction gearbox (62) is connected to the drive slot (57) of the head shaft drive unit (53) through a shaft assembly (63), and the other end is connected to a drive motor (64). The head shaft body (51) has a bearing seat (65) fixed to the drive mounting platform (61) at the end near the shaft assembly (63).

7. A large mining hoist according to claim 4, characterized in that, The hopper structure (4) includes a hopper shell (41) disposed in the hopper installation space and having a hopper cavity (42). The hopper shell (41) has a curved plate (43) and a receiving plate (44) disposed opposite to the curved plate (43). The lower end of the curved plate (43) has an arc-shaped curved portion (45) connected to the lower end of the receiving plate (44). The side of the curved plate (43) and the side of the receiving plate (44) are respectively connected by corresponding side plates (46). The side plate (46) away from the hopper cavity (42) is provided with a hopper fixing portion (47) corresponding to the hopper connecting portion (35). The hopper connecting hole (36) is connected to the hopper fixing portion (47) by connecting bolts.

8. A large mining hoist according to claim 7, characterized in that, The upper end of the hopper shell (41) has a hopper opening (48) that communicates with the hopper cavity (42). The upper end of the receiving plate (44) has a wear-resistant edge (49) that is inclined toward the bending plate (43). The middle part of the hopper opening (48) is provided with a plurality of reinforcing ribs (50) that are perpendicular to the bending plate (43) or the receiving plate (44). One end of the reinforcing rib (50) is connected to the upper end of the receiving plate (44) and / or the wear-resistant edge (49), and the other end of the reinforcing rib (50) extends downward at an inclination and is connected to the bending plate (43).

9. A large mining hoist according to claim 6, characterized in that, The upper end of the elevator housing (1) is provided with a head housing (11), the drive mounting platform (61) is located on the outer side of the head housing (11), the lower side of the head housing (11) is provided with a material drop port (12), the lower end of the elevator housing (1) is provided with a tail housing (13), and a number of vertically arranged standard sections (14) are provided between the head housing (11) and the tail housing (13). A number of feed ports (15) are provided on one side of the lowest standard section (14), and a number of maintenance ports (16) are provided on one side of one of the upper standard sections (14).

10. A large mining hoist according to claim 9, characterized in that, The tail housing (13) has several horizontally arranged tail shaft connecting rods (17) that correspond one-to-one with the bucket chain group (2). The tail shaft connecting rod (17) has a tail shaft body (18). A universal coupling (19) is provided between the two tail shaft bodies (18). The tail shaft body (18) has a counterweight wheel (20) at each end that is connected to the end of the bucket chain (21) away from the force wheel (54).

Images