Lifting device, lifting system and excavating equipment

Abstract

The application provides a lifting device, a lifting system and an excavating device. The lifting device comprises a rotating part, a speed reducer, a shaft coupling, a motor and a support. The motor and the speed reducer are both mounted on the support. The motor, the shaft coupling, the speed reducer and the rotating part are sequentially transmission-connected. The shaft coupling is at least partially located outside the support and can move axially from outside the support to butt joint with an input shaft of the speed reducer, thereby solving the technical problem that the maintenance and disassembly of the lifting mechanism of the excavating device are relatively difficult.

Description

Technical Field

[0001] This invention relates to the technical field of mining machinery and equipment, and in particular to a hoisting device, a hoisting system, and an excavating device. Background Technology

[0002] In mining excavators, a lifting mechanism is used to pull the lifting rope, thereby driving the bucket to move. Currently, the lifting mechanisms of mining excavators are usually bulky, and due to the limited space inside the machine shed, maintenance and disassembly are quite difficult; furthermore, the lifting mechanism vibrates a lot, generates a lot of noise, and consumes a lot of energy during operation. Summary of the Invention

[0003] The purpose of this invention is to provide a lifting device, a lifting system, and an excavating equipment to solve the technical problem that the lifting mechanism of excavating equipment is difficult to maintain and disassemble.

[0004] The above-mentioned objectives of the present invention can be achieved by the following technical solutions:

[0005] The present invention provides a lifting device, comprising: a rotating component, a reducer, a coupling, a motor, and a support. The motor and the reducer are both mounted on the support. The motor, the coupling, the reducer, and the rotating component are sequentially connected in a transmission manner. The coupling is at least partially located outside the support and is capable of axially moving from outside the support to dock with the input shaft of the reducer.

[0006] In a preferred embodiment, the reducer is a planetary reducer, which is at least partially located within the cylindrical cavity of the rotating component.

[0007] In a preferred embodiment, the support includes a first upright frame located between the motor and the reducer, the rotating component and the reducer located on the same side of the first upright frame, and the coupling located at least partially on the side of the first upright frame opposite to the rotating component.

[0008] In a preferred embodiment, the coupling includes an elastic body, a protective cover, a first coupling jaw connected to the output shaft of the motor, and a second coupling jaw connected to the input shaft of the reducer. The first coupling jaw is provided with a plurality of first transmission blocks spaced apart along the circumferential direction, and the second coupling jaw is provided with a plurality of second transmission blocks spaced apart along the circumferential direction. The first transmission blocks and the second transmission blocks are arranged along the circumferential direction. The elastic body is at least partially disposed between adjacent first transmission blocks and second transmission blocks. The protective cover is sleeved on the first coupling jaw to prevent the elastic body from moving radially.

[0009] In a preferred embodiment, the first coupling claw is provided with a first radial groove located between two connected first transmission blocks, at least one of the elastic bodies and at least one of the second transmission blocks are disposed in the first radial groove, and the elastic body can be removed radially from the first radial groove.

[0010] In a preferred embodiment, the elastomer is provided with a second radial groove, and the second transmission block is disposed in the second radial groove.

[0011] In a preferred embodiment, the elastomer includes a circumferential portion and two radial portions. The two radial portions are formed on the inner side of the circumferential portion and are spaced apart along the circumferential direction. The second radial groove is formed between the two radial portions, and the two radial portions respectively abut against the second transmission block.

[0012] In a preferred embodiment, the elastomer is located outside the support.

[0013] In a preferred embodiment, the side wall of the rotating component is provided with at least two air inlets, and the side wall of the rotating component is also provided with a wind-facing plate corresponding to each of the air inlets; the inner end of the wind-facing plate is connected to the side wall of the rotating component, and the outer end of the wind-facing plate extends outward; in a clockwise direction, the inner end of at least one wind-facing plate is located in front of its corresponding air inlet, and at least one wind-facing plate is located behind its corresponding air inlet; the end of the rotating component is provided with an air outlet.

[0014] In a preferred embodiment, the lifting device includes a fan located outside the rotating member, and the fan is used to drive the airflow inside the rotating member to flow outward through the air outlet.

[0015] In a preferred embodiment, the windward plate includes a first windward plate and a second windward plate. In a clockwise direction, the inner end of the first windward plate is located in front of the corresponding air inlet, and the second windward plate is located behind the corresponding air inlet; at least one first windward plate and at least one second windward plate are arranged face to face.

[0016] In a preferred embodiment, the sidewall of the rotating component is provided with two first wind-facing plates and two second wind-facing plates, with the first wind-facing plates and the second wind-facing plates being distributed alternately.

[0017] In a preferred embodiment, in a clockwise direction, the outer end of the first windward plate is located behind the inner end of the first windward plate, and the outer end of the second windward plate is located in front of the inner end of the second windward plate.

[0018] In a preferred embodiment, the projection of the windward plate on the longitudinal projection of the corresponding air inlet and the corresponding windward plate covers at least a portion of the projection of the air inlet.

[0019] In a preferred embodiment, the windward plate is in the shape of a quarter-cylinder.

[0020] In a preferred embodiment, the support includes a second upright, which is located on the side of the rotating component opposite to the motor. The rotating component includes a drum shaft, which is mounted to the second upright via a first bearing.

[0021] In a preferred embodiment, the lifting device includes a brake, and the speed reducer includes a brake shaft connected to the brake.

[0022] In a preferred embodiment, the drum shaft is a hollow shaft, the brake shaft passes through the drum shaft and is connected to the inner wall of the drum shaft through a second bearing; the brake is installed on the outside of the second stand.

[0023] In a preferred embodiment, the first support frame is provided with an extension pipe and a speed reducer vent cap connected to the extension pipe.

[0024] The present invention provides a lifting system, comprising: a lifting rope, a bucket mechanism, and the above-mentioned lifting device, wherein the lifting rope is at least partially wound around the rotating member, and the bucket mechanism is connected to the lifting rope.

[0025] The present invention provides an excavation device, comprising: a lifting arm, a lifting rope, a bucket mechanism, and the aforementioned lifting device. The lifting arm is provided with a pulley mechanism, the lifting rope cooperates with the pulley mechanism, and the lifting rope is at least partially wound around the rotating component. The bucket mechanism is connected to the lifting rope.

[0026] The features and advantages of this invention are:

[0027] The motor's output shaft is connected to the reducer's input shaft via a coupling. The motor's kinetic energy is transmitted to the reducer through the coupling, and then to the rotating parts to drive them to rotate, thus realizing the transmission between the various working components. As the rotating parts rotate, the hopper mechanism is lifted by a lifting rope. This lifting device features a highly reliable connection structure, minimal vibration during operation, and is easy to disassemble and maintain. Its simple structure solves the technical problem of difficult maintenance and disassembly. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A front view of one embodiment of the lifting device provided by the present invention;

[0030] Figure 2 for Figure 1 The side view of the lifting device shown;

[0031] Figure 3 for Figure 1 A top view of the Q direction;

[0032] Figure 4 for Figure 3 A partial sectional view along the AA direction;

[0033] Figure 5 A partial side view of the connection structure between the first upright and the reducer in the lifting device provided by the present invention;

[0034] Figure 6 for Figure 3 A partial sectional view along the P-direction;

[0035] Figures 7-8 for Figure 1 A magnified view of a portion of the image;

[0036] Figure 9 for Figure 7 A magnified view of a section at point I;

[0037] Figure 10 for Figure 7 A magnified view of a section at point B in the middle;

[0038] Figure 11 This is a cross-sectional view of the coupling in the lifting device provided by the present invention;

[0039] Figure 12 An exploded view of the coupling in the lifting device provided by the present invention;

[0040] Figure 13 for Figure 12 A schematic diagram of the structure of the elastic element in the coupling shown;

[0041] Figure 14 A front view of one embodiment of the lifting device provided by the present invention;

[0042] Figure 15 for Figure 14The side view of the lifting device shown;

[0043] Figure 16 A cross-sectional view along the DD direction of the rotating component in the lifting device provided by the present invention;

[0044] Figure 17 This is a front view of the rotating component in the lifting device provided by the present invention;

[0045] Figure 18 This is a side view of the rotating component in the lifting device provided by the present invention;

[0046] Figure 19 for Figure 17 A sectional view along the FF direction;

[0047] Figure 20 for Figure 17 A sectional view along the EE direction;

[0048] Figure 21 for Figure 18 A cross-sectional view along the GG direction.

[0049] Explanation of icon numbers:

[0050] 1. Rotating component; 101. Drum shaft; 28. First bearing;

[0051] 102. Air inlet;

[0052] 103. Air outlet; 1031. Fan;

[0053] 104. Windward panel; 1041. First windward panel; 1042. Second windward panel;

[0054] 36. Electric motor;

[0055] 31. Reducer; 311. Brake shaft; 312. Oil filler / drain port; 29. ​​Second bearing;

[0056] 22. Brake; 62. Protective cover;

[0057] 35. Couplings;

[0058] 351, First coupling claw; 3511, First transmission block; 3512, First radial groove;

[0059] 352. Second coupling claw; 3521. Second transmission block;

[0060] 353, Elastomer; 3531, Second radial groove; 3532, Circumferential portion; 3533, Radial portion;

[0061] 354. Protective shield;

[0062] 2. Support; 201. First upright; 202. Second upright;

[0063] 33. Extended pipe; 34. Gearbox vent cap;

[0064] 15. Encoder;

[0065] 32. Key;

[0066] 47. Combination gasket; 54. O-ring rubber seal;

[0067] 56. Hex bolts;

[0068] 61. Butter lips;

[0069] 65. L-shaped oil level indicator; 67. Adjustment plate;

[0070] 66. Adjust the bolts;

[0071] 68. Adjusting plate; 69. Hex bolt;

[0072] 53. O-ring rubber seal;

[0073] 59. Hex bolts. Detailed Implementation

[0074] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0075] Option 1

[0076] This invention provides a lifting device, such as... Figures 1-8 As shown, the lifting device includes: a rotating component 1, a reducer 31, a coupling 35, a motor 36, and a support 2. The motor 36 and the reducer 31 are both mounted on the support 2. The motor 36, the coupling 35, the reducer 31, and the rotating component 1 are sequentially connected for transmission. The coupling 35 is at least partially located outside the support 2 and can move axially from outside the support 2 to dock with the input shaft of the reducer 31.

[0077] The output shaft of motor 36 is connected to the input shaft of reducer 31 via coupling 35. The kinetic energy of motor 36 is transmitted to reducer 31 through coupling 35, and then to rotating component 1 to drive rotating component 1, thus realizing the transmission between the working parts. When rotating component 1 rotates, it lifts the hopper mechanism via lifting rope. This lifting device has a highly reliable connection structure, low vibration during operation, and is easy to disassemble and maintain. Its simple structure solves the technical problem of difficult maintenance and disassembly.

[0078] like Figure 1 , Figure 7 and Figure 14 As shown, the rotating component 1 can be a drum. The reducer 31 can be a planetary reducer 31, which is at least partially located within the drum cavity of the rotating component 1. The output shaft of the motor 36 is connected to the reducer 31, and the reducer 31 is connected to the rotating component 1. The reducer 31 can drive the rotating component 1 to rotate under the drive of the motor 36. The reducer 31 is at least installed within the drum cavity of the rotating component 1, making the overall structure of the lifting device more compact, reducing its size and weight. When this lifting device is applied to an electric shovel platform, it helps to avoid occupying the entire platform space, causing the electric shovel platform to become crowded and cluttered, and reducing the impact on the center of gravity of the entire machine. Figure 1 and Figure 7 As shown, the main body of the reducer 31 is installed inside the rotating part 1.

[0079] In this lifting device, a single motor 36 powers the rotating component 1. Compared to the existing dual-motor coaxial input scheme, this lifting device solves the problem of poor synchronization between the two motors 36, resulting in higher efficiency and energy savings. This lifting device can replace the existing dual-motor coaxial input scheme; it only requires matching the parameters of the motor 36 with those of the existing lifting generator set, without needing to modify the parameters of the existing lifting generator.

[0080] In one embodiment, the support 2 includes a first upright 201 located between the motor 36 and the reducer 31. The rotating component 1 and the reducer 31 are located on the same side of the first upright 201. The coupling 35 is located at least partially on the side of the first upright 201 away from the rotating component 1. The first upright 201 provides support for the reducer 31.

[0081] The side of the first support frame 201 closest to the motor 36 is its outer side, and the side of the first support frame 201 closest to the rotating component 1 is its inner side.

[0082] In one embodiment, the coupling 35 includes an elastic body 353, a protective cover 354, a first coupling jaw 351 connected to the output shaft of the motor 36, and a second coupling jaw 352 connected to the input shaft of the reducer 31, as shown below. Figure 7 , Figure 8 and Figures 11-12As shown, the first coupling jaw 351 is provided with a plurality of first transmission blocks 3511 spaced apart along the circumferential direction, and the second coupling jaw 352 is provided with a plurality of second transmission blocks 3521 spaced apart along the circumferential direction. The first transmission blocks 3511 and the second transmission blocks 3521 are arranged along the circumferential direction, and the elastic body 353 is at least partially disposed between adjacent first transmission blocks 3511 and second transmission blocks 3521. The protective cover 354 is sleeved on the first coupling jaw 351 to prevent the elastic body 353 from moving radially. The first transmission blocks 3511, the elastic body 353 and the second transmission blocks 3521 cooperate to make the second coupling jaw 352 rotate synchronously with the first coupling jaw 351. The elastic body 353 can be pulled out radially from between the first coupling jaw 351 and the second coupling jaw 352. When replacing it, only the protective cover 354 needs to be moved, without moving the reducer 31 or the motor 36, which facilitates the replacement of the elastic body 353 and simplifies the replacement speed.

[0083] Furthermore, the first coupling claw 351 is provided with a first radial groove 3512 located between two connected first transmission blocks 3511. At least one elastic body 353 and at least one second transmission block 3521 are disposed in the first radial groove 3512, and the elastic body 353 can be removed radially from the first radial groove 3512. The first radial groove 3512 is radially outward through to facilitate the radial removal or insertion of the elastic body 353; the cover 354 can cover the first radial groove 3512 to prevent the elastic body 353 from falling out during operation.

[0084] Furthermore, the elastic body 353 is provided with a second radial groove 3531, and the second transmission block 3521 is disposed in the second radial groove 3531. This facilitates the transmission of kinetic energy between the first transmission block 3511 and the second transmission block 3521 through the elastic body 353, and also facilitates the assembly and disassembly of the elastic body 353. Figure 13 As shown, the elastic body 353 includes a circumferential portion 3532 and two radial portions 3533. The two radial portions 3533 are formed on the inner side of the circumferential portion 3532 and are spaced apart along the circumferential direction. A second radial groove 3531 is formed between the two radial portions 3533. The two radial portions 3533 respectively abut against the second transmission block 3521. The coupling 35 has high reliability, good shock absorption effect, and extended service life. The elastic body 353 is easy to replace. Preferably, the first radial groove 3512, the elastic body 353, and the second transmission block 3521 correspond one-to-one.

[0085] The arrangement of the elastic body 353, the first transmission block 3511 and the second transmission block 3521 is not limited to the arrangement shown in the figure. For example, the first transmission block 3511, the elastic body 353 and the second transmission block 3521 are distributed along the circumferential direction, and an elastic body 353 is set between one first transmission block 3511 and one second transmission block 3521, which can also realize the transmission of rotational kinetic energy between the first coupling claw 351 and the second coupling claw 352.

[0086] like Figure 7 As shown, the elastomer 353 is located outside the first support 201 to facilitate the removal or insertion of the elastomer 353 without moving the reducer 31 and the motor 36. The cover 354 is at least partially or entirely located outside the first support 201 to facilitate axial movement of the cover 354, thereby exposing the elastomer 353.

[0087] In one embodiment, the support 2 includes a second upright 202 located on the side of the rotating member 1 opposite to the motor 36. The rotating member 1 includes a drum shaft 101, which is mounted to the second upright 202 via a first bearing 28. Figure 1 and Figure 7 As shown, the input end of the reducer 31 is connected to the first upright 201 through a stop, and the rotating part 1 is connected to the second upright 202 through the drum shaft 101, which ensures the stability of the overall structure of the rotating part 1 and the reducer 31.

[0088] Considering that the reducer 31 continuously generates heat during operation due to meshing, friction, and lubricating oil churning, the inventors improved the heat dissipation method of the lifting device:

[0089] like Figures 14-21 As shown, the side wall of the rotating component 1 is provided with at least two air inlets 102, and the side wall of the rotating component 1 is also provided with a wind-facing plate 104 corresponding to each air inlet 102; the inner end of the wind-facing plate 104 is connected to the side wall of the rotating component 1, and the outer end of the wind-facing plate 104 extends outward; in the clockwise direction, the inner end of at least one wind-facing plate 104 is located in front of its corresponding air inlet 102, and at least one wind-facing plate 104 is located behind its corresponding air inlet 102; the end of the rotating component 1 is provided with an air outlet 103.

[0090] like Figure 14As shown, when the lifting system is working, the rotating component 1 will rotate. The airflow outside the rotating component 1 is blocked and guided by the wind vane 104 and enters the air inlet 102, thereby continuously blowing cold air from the outside into the rotating component 1. The cold air entering the rotating component 1 will flow together with the air heated by the heat emitted by the reducer towards one end of the rotating component 1 and be discharged through the air outlet 103, thereby cooling the internal space of the rotating component 1 and the reducer and other equipment, avoiding the reducer temperature from continuously rising due to poor heat dissipation, which could lead to oil leakage or even damage to the reducer. Furthermore, the inner ends of the wind vane 104 are respectively set on the front and rear sides of the corresponding air inlets 102, ensuring that cold air from the outside can enter the rotating component 1 through at least one air inlet 102 when the rotating component 1 is rotating forward and backward, which is beneficial to the stable operation of the reducer and improves the service life of the lifting device.

[0091] Furthermore, the lifting device includes a fan 1031, which is located outside the rotating member 1. The fan 1031 is used to drive the airflow inside the rotating member 1 to flow outward through the air outlet 103. Under the suction action of the fan 1031, a larger pressure difference will be formed inside the rotating member 1, which will further facilitate gas flow and thus improve the cooling effect.

[0092] Preferably, such as Figure 14 and Figure 15 As shown, two fans 1031 are installed side by side on the second support frame 202.

[0093] like Figure 16 As shown, the windward plate 104 includes a first windward plate 1041 and a second windward plate 1042. In a clockwise direction, the inner end of the first windward plate 1041 is located in front of the corresponding air inlet 102, and the second windward plate 1042 is located behind the corresponding air inlet 102.

[0094] In one embodiment, at least one first wind-facing plate 1041 and at least one second wind-facing plate 1042 are arranged facing each other. When the rotating member 1 rotates clockwise or counterclockwise, cold air from the outside can enter the rotating member 1 through the air inlet 102 through the guiding effect of the first wind-facing plate 1041 and the second wind-facing plate 1042, respectively.

[0095] Furthermore, the sidewall of the rotating component 1 is provided with two first wind-facing plates 1041 and two second wind-facing plates 1042, with the first wind-facing plates 1041 and the second wind-facing plates 1042 being distributed alternately.

[0096] The inventors optimized the structure of the windward plate 104:

[0097] In a clockwise direction, the outer end of the first windward plate 1041 is located behind the inner end of the first windward plate 1041, and the outer end of the second windward plate 1042 is located in front of the inner end of the second windward plate 1042. In this way, when the rotating member 1 rotates counterclockwise, it is beneficial for the external airflow to be blocked and guided by the first windward plate 1041 and enter the rotating member 1 through the air inlet 102 corresponding to the first windward plate 1041. When the rotating member 1 rotates clockwise, it is beneficial for the external airflow to be blocked and guided by the second windward plate 1042 and enter the rotating member 1 through the air inlet 102 corresponding to the second windward plate 1042.

[0098] Furthermore, regarding the corresponding air inlet 102 and the windward plate 104, on the longitudinal projection of the air inlet 102, the projection of the windward plate 104 covers at least a portion of the projection of the air inlet 102, so that the windward plate 104 can guide the airflow to flow into its corresponding air inlet 102. The longitudinal direction of the air inlet 102 is its depth direction, which is approximately from the outside of the rotating member 1 to the inside of the rotating member 1. Preferably, as shown... Figure 16 As shown, the cross-section of the windward plate 104 is arc-shaped. More preferably, the windward plate 104 is a quarter-cylinder shape.

[0099] By setting an air inlet 102, a wind-facing plate 104, and an air outlet 103 on the rotating part 1 of the lifting device, a wind-cooled heat dissipation method is achieved, which solves the problem of poor heat dissipation of the planetary reducer installed inside the rotating part 1. This allows the heat to be dissipated in a timely manner, preventing the reducer temperature from rising continuously and ultimately causing oil leakage or even damage to the reducer.

[0100] In one embodiment, the lifting device includes a brake 22, and the reducer 31 includes a brake shaft 311, which is connected to the brake 22. Further, the drum shaft 101 is a hollow shaft, and the brake shaft 311 passes through the drum shaft 101 and is connected to the inner wall of the drum shaft 101 via a second bearing 29; the brake 22 is installed on the outer side of the second support frame 202, such as... Figure 7 As shown, the small end of the reducer 31 is connected to the brake 22 via a brake shaft 311. Preferably, a speed sensor is installed at the end of the brake shaft 311. The brake 22 is mounted on the second support 202, which is beneficial for the reliable and stable operation of the brake 22. The brake 22 can be a pneumatic disc brake 22, which is reliable, safe and environmentally friendly, requires less maintenance, has high reliability, and meets environmental protection requirements.

[0101] In one embodiment, an extension pipe 33 and a reducer vent cap 34 connected to the extension pipe 33 are provided on the first support 201. Figure 7 As shown, the reducer 31 is equipped with an oil filling / draining port 312.

[0102] The lifting device adopts a modular design, with the reducer 31, support 2, brake 22, and motor 36 being independent modules. All assembly, debugging, and adjustment can be completed in the factory without on-site assembly and testing. This reduces the requirements for the environment, manufacturing precision, worker skill level, and proficiency, resulting in better overall performance and enabling maintenance-free use throughout its entire life cycle. This saves a significant amount of time and ensures the overall accuracy of the lifting device, thereby greatly reducing installation, debugging, and operating costs.

[0103] Support 2 can be an integral welded support, which has a simple structure, small deformation, convenient installation and transportation, and requires no maintenance. This lifting device has the advantages of small size, simple structure, low noise, low vibration, and high reliability, and is easy to install and transport. This lifting device is fully compatible with existing electric shovel generator sets, the electrical system of the original lifting mechanism, the internal space of the machine shed, and the dimensions of the mounting base, without requiring any modification or damage to the original structure. Using this lifting device for modification will not increase additional costs or introduce new unknown risks.

[0104] This lifting device can be applied to the lifting system of mining excavators, and it can play a significant role when applied to large open-pit mine excavators.

[0105] In one embodiment, such as Figures 1-10 As shown, the specific installation structure of the lifting device includes: encoder 15, key 32, combination gasket 47, O-ring rubber seal 54, hex bolt 56, grease nipple 61, adjusting bolt 66, adjusting plate 68, hex bolt 69, O-ring rubber seal 53, hex bolt 59, L-shaped oil level indicator 65, adjusting plate 67, and protective cover 62.

[0106] Option 2

[0107] This invention provides a lifting system comprising: a lifting rope, a bucket mechanism, and the aforementioned lifting device. The lifting rope is at least partially wound around a rotating component 1, and the bucket mechanism is connected to the lifting rope. The rotating component 1 rotates under the drive of a motor 36, thereby driving the bucket mechanism to move via the lifting rope. This lifting system possesses the technical features and beneficial effects of the aforementioned lifting device, which will not be elaborated further here.

[0108] Option 3

[0109] This invention provides an excavating device, comprising: a lifting arm, a lifting rope, a bucket mechanism, and the aforementioned lifting device. A pulley mechanism is provided on the lifting arm, the lifting rope cooperates with the pulley mechanism, and the lifting rope is at least partially wound around a rotating component 1. The bucket mechanism is connected to the lifting rope, and the pulley mechanism guides and supports the lifting rope. The rotating component 1 rotates under the drive of a motor 36, thereby driving the bucket mechanism to move via the lifting rope. This excavating device possesses the technical features and beneficial effects of the aforementioned lifting device, which will not be elaborated further here. Specifically, this excavating device can be a mining excavator.

[0110] The above descriptions are merely a few embodiments of the present invention. Those skilled in the art can make various modifications or variations to the embodiments of the present invention based on the content disclosed in the application documents without departing from the spirit and scope of the present invention.

Claims

1. A lifting device, characterized in that, include: The system includes a rotating component, a speed reducer, a coupling, a motor, and a support. The motor and the speed reducer are both mounted on the support. The motor, the coupling, the speed reducer, and the rotating component are sequentially connected for transmission. The coupling is at least partially located outside the support and is axially movable from outside the support to connect with the input shaft of the speed reducer. The rotating component has at least two air inlets on its side wall, and the side wall of the rotating component is also provided with a wind-facing plate corresponding to each of the air inlets; the inner end of the wind-facing plate is connected to the side wall of the rotating component, and the outer end of the wind-facing plate extends outward. In a clockwise direction, the inner end of at least one of the wind-facing plates is located on the front side of the corresponding air inlet, and at least one of the wind-facing plates is located on the rear side of the corresponding air inlet. An air outlet is provided at the end of the rotating component.

2. The lifting device according to claim 1, characterized in that, The speed reducer is a planetary speed reducer, and the planetary speed reducer is at least partially located inside the cylindrical cavity of the rotating component.

3. The lifting device according to claim 1, characterized in that, The support includes a first upright, which is located between the motor and the reducer. The rotating component and the reducer are located on the same side of the first upright, and the coupling is at least partially located on the side of the first upright opposite to the rotating component.

4. The lifting device according to any one of claims 1-3, characterized in that, The coupling includes an elastic body, a protective cover, a first coupling claw connected to the output shaft of the motor, and a second coupling claw connected to the input shaft of the reducer. The first coupling claw is provided with a plurality of first transmission blocks spaced apart along the circumferential direction, and the second coupling claw is provided with a plurality of second transmission blocks spaced apart along the circumferential direction. The first transmission blocks and the second transmission blocks are arranged along the circumferential direction, and the elastic body is at least partially disposed between adjacent first transmission blocks and second transmission blocks. The protective cover is fitted over the first coupling claw to prevent the elastomer from moving radially.

5. The lifting device according to claim 4, characterized in that, The first coupling claw is provided with a first radial groove located between two connected first transmission blocks, at least one of the elastic bodies and at least one of the second transmission blocks are disposed in the first radial groove, and the elastic body can be removed radially from the first radial groove.

6. The lifting device according to claim 5, characterized in that, The elastomer is provided with a second radial groove, and the second transmission block is disposed in the second radial groove.

7. The lifting device according to claim 6, characterized in that, The elastomer includes a circumferential portion and two radial portions. The two radial portions are formed on the inner side of the circumferential portion and are spaced apart along the circumferential direction. The second radial groove is formed between the two radial portions, and the two radial portions respectively abut against the second transmission block.

8. The lifting device according to claim 4, characterized in that, The elastomer is located outside the support.

9. The lifting device according to claim 1, characterized in that, The lifting device includes a fan located outside the rotating component, and the fan is used to drive the airflow inside the rotating component to flow outward through the air outlet.

10. The lifting device according to claim 1, characterized in that, The windward plate includes a first windward plate and a second windward plate. In a clockwise direction, the inner end of the first windward plate is located in front of the corresponding air inlet, and the second windward plate is located behind the corresponding air inlet. At least one of the first windward panels and at least one of the second windward panels are arranged facing each other.

11. The lifting device according to claim 10, characterized in that, The sidewall of the rotating component is provided with two first wind-facing plates and two second wind-facing plates, with the first wind-facing plates and the second wind-facing plates being distributed alternately.

12. The lifting device according to claim 10, characterized in that, In a clockwise direction, the outer end of the first windward plate is located behind the inner end of the first windward plate, and the outer end of the second windward plate is located in front of the inner end of the second windward plate.

13. The lifting device according to claim 12, characterized in that, Correspondingly, on the longitudinal projection of the air inlet and the windward plate, the projection of the windward plate covers at least a portion of the projection of the air inlet.

14. The lifting device according to claim 12, characterized in that, The windward plate is in the shape of a quarter-cylinder.

15. The lifting device according to any one of claims 1-3, characterized in that, The support includes a second upright, which is located on the side of the rotating component opposite to the motor. The rotating component includes a drum shaft, which is mounted on the second upright via a first bearing.

16. The lifting device according to claim 15, characterized in that, The lifting device includes a brake, and the speed reducer includes a brake shaft, which is connected to the brake.

17. The lifting device according to claim 16, characterized in that, The drum shaft is a hollow shaft, and the brake shaft passes through the drum shaft and is connected to the inner wall of the drum shaft through a second bearing; the brake is installed on the outside of the second support frame.

18. The lifting device according to claim 3, characterized in that, The first support frame is equipped with an extension pipe and a speed reducer vent cap connected to the extension pipe.

19. A lifting system, characterized in that, include: The lifting rope, the hopper mechanism, and the lifting device according to any one of claims 1-18, wherein the lifting rope is at least partially wound around the rotating member, and the hopper mechanism is connected to the lifting rope.

20. An excavating device, characterized in that, include: A lifting boom, a lifting rope, a bucket mechanism, and a lifting device according to any one of claims 1-18, wherein the lifting boom is provided with a pulley mechanism, the lifting rope cooperates with the pulley mechanism, and the lifting rope is at least partially wound around the rotating member, and the bucket mechanism is connected to the lifting rope.

Images