A mining excavator

Abstract

The present invention relates to the technical field of excavators, and specifically discloses a mining excavator, comprising a mounting seat, a walking mechanism and a slewing mechanism. A cleaning mechanism for cleaning lubricant is arranged inside the slewing mechanism, a driving mechanism is arranged inside the mounting seat to drive the mounting seat and the cleaning mechanism to rotate, and a lubricating member for replenishing lubricant is also arranged inside the mounting seat. In the mining excavator of the present invention, when the mounting assembly revolves, the rotating assembly and the cleaning assembly rotate at the same time. When the rotating assembly rotates, the cleaning plate is driven to reciprocate. During the process of inserting the cleaning plate into the slewing mechanism, a part of the lubricant is squeezed into the mounting assembly. During the process of resetting the cleaning plate, another part of the lubricant is scraped into the mounting assembly to clean the lubricant on the slewing mechanism. During the process of the cleaning plate cleaning the slewing mechanism, the lubricating member replenishes the lubricant to the cleaned position, so as to realize automatic replenishment of the lubricant without disassembling the excavator.

Description

Technical Field

[0001] The present invention relates to the technical field of excavators, and in particular to an excavator for mining. Background Art

[0002] Excavators, also known as excavation machinery or backhoes, are earth-moving machines that use buckets to dig materials above or below the bearing surface and load them into transport vehicles or unload them to stockpiles. The materials excavated by excavators are mainly soil, coal, silt, and pre-loosened soil and rocks. From the development of engineering machinery in recent years, the development of excavators is relatively fast. Excavators have become one of the most important engineering machinery in engineering construction. When excavators are working in mines, they often need to work continuously for a long time. Therefore, the lubrication of excavators is very important to ensure the normal operation of the machine and extend its service life.

[0003] The Chinese patent document with authorization announcement number CN110409536B discloses a slewing device and an excavator, which solves the problem of low lubricant utilization rate of the slewing device. The lubricant expelled during the meshing process of the slewing reducer and the inner gear ring of the slewing support is returned to the connecting plane ring through the guide table, so that the lubricant can be reused again, thereby improving the utilization rate of the lubricant.

[0004] However, the structural design of the above-mentioned related technology: although it can improve the utilization rate of the lubricant, the lubricant still needs to be replaced after long-term use. The lubricant used for a long time will gradually harden, resulting in reduced fluidity of the lubricant. The base and the cab of the excavator can only be separated for replacement. This replacement method takes a lot of time and is likely to reduce the working efficiency of the excavator.

[0005] Therefore, a mining excavator is proposed to solve the above-mentioned problems. Summary of the invention

[0006] The present invention provides a mining excavator, aiming to solve the problem in the related art that it takes a long time to replace the lubricant, which easily affects the working efficiency.

[0007] The mining excavator of the present invention comprises a mounting seat, a walking mechanism and a slewing mechanism, a cleaning mechanism for cleaning lubricant is provided inside the slewing mechanism, a driving mechanism is provided inside the mounting seat to drive the mounting seat and the cleaning mechanism to rotate, and a lubricating member for replenishing lubricant is also provided inside the mounting seat;

[0008] The cleaning mechanism comprises a mounting assembly, a rotating assembly rotatably connected to the upper part of the mounting assembly, a cleaning plate hinged on the rotating assembly, and a cleaning assembly rotatably connected to the mounting assembly. The cleaning plate is arranged on the mounting assembly along a transverse sliding direction to scrape off the lubricant in the rotary mechanism. A cleaning plate located in the tangent direction of the cleaning assembly is installed inside the mounting assembly. The driving mechanism can drive the mounting assembly to revolve around the axis of the rotary mechanism and can drive the rotating assembly to rotate around itself. When the mounting assembly revolves, the rotating assembly drives the cleaning plate to reciprocate and insert into the rotary mechanism to collect the lubricant into the mounting assembly. At the same time, the rotating assembly drives the cleaning assembly to rotate to transfer the lubricant entering the mounting assembly and scrape off the lubricant adhering to the cleaning plate. At the same time, the cleaning plate scrapes off the lubricant adhering to the cleaning assembly.

[0009] The mounting assembly includes a collecting cylinder and a limiting cylinder rotatably connected to the collecting cylinder, a cleaning plate is mounted on the inner wall of the collecting cylinder, a rotating assembly is mounted on the limiting cylinder, the rotating assembly includes a transmission wheel 1 mounted on the limiting cylinder, a hinge column mounted at the bottom edge of the transmission wheel 1 and a hinge plate hinged on the hinge column, and the cleaning plate is hinged to the hinge plate.

[0010] During cleaning, the driving mechanism drives the mounting assembly to revolve, and at the same time, the driving mechanism also drives the rotating assembly and the cleaning assembly to rotate. When the rotating assembly rotates, it can drive the cleaning plate to move back and forth. During the process of inserting the cleaning plate into the rotating mechanism, a part of the lubricant is squeezed into the mounting assembly. During the resetting process of the cleaning plate, another part of the lubricant is scraped into the mounting assembly to clean the lubricant on the rotating mechanism. At the same time, the cleaning assembly rotates to transfer the lubricant entering the mounting assembly and scrape off the lubricant adhering to the cleaning plate to facilitate subsequent cleaning of the lubricant. During the process of the cleaning plate cleaning the rotating mechanism, the lubricating parts replenish the lubricant to the cleaned position to realize automatic replenishment of the lubricant.

[0011] Preferably, a through groove for the cleaning plate to extend out is provided on the outer side of the collecting cylinder, the outer side of the collecting cylinder is tangent to the inner side of the rotary mechanism, and a slot is provided on the top of the collecting cylinder near the limiting cylinder.

[0012] Preferably, the interior of the limiting cylinder is elastically slidably connected with a sealing plate in the vertical direction to seal the limiting cylinder, and the interior of the slot is elastically slidably connected with a sealing disk in the vertical direction to seal the slot.

[0013] The sealing plate can seal the limiting cylinder when it is not cleaned, and the sealing disc can seal the slot when it is not cleaned to prevent lubricant from entering the limiting cylinder or the slot.

[0014] Preferably, the cleaning assembly includes a rotating cylinder, a plurality of scrapers and a plurality of movable parts. The rotating cylinder is rotatably connected to the inner top wall of the collecting cylinder and is transmission-connected to a transmission wheel. The plurality of scrapers are distributed on the outside of the rotating cylinder in a circular array with the axis of the rotating cylinder as the center. The cleaning plate is arranged in the tangential direction of the scraper, and the plurality of movable parts are respectively arranged between each adjacent two scrapers.

[0015] When the rotating drum drives the scraper to rotate, the lubricant adhering to the cleaning plate can be scraped off, and the lubricant entering the collecting drum can also be transferred. When the scraper rotates, the lubricant adhering to the scraper can be scraped off by the cleaning plate.

[0016] Preferably, the movable part includes a push plate, a sliding rod and two guide rods. The push plate is arc-shaped and is located between two scrapers. The two guide rods are installed on the push plate. One end of the guide rod passes through the rotating cylinder and extends to the interior of the rotating cylinder. The sliding rod is installed in the middle inner side of the push plate. The sliding rod is elastically slidably connected to the rotating cylinder along the lateral direction.

[0017] Preferably, a fixing rod installed on the inner top wall of the rotating cylinder is provided inside the rotating cylinder, and two limiting plates for pushing the guide rod to move are installed on the outer side of the fixing rod.

[0018] When the scraper is no longer in contact with the cleaning plate, the guide rod is in contact with the limit plate. Under the action of the limit plate, the guide rod can gradually push the push plate outward to push out the lubricant between the two scrapers. When the push plate moves to the extreme position, the outer side of the push plate is tangent to the cleaning plate. At this time, the lubricant on the push plate can be scraped off through the cleaning plate.

[0019] Preferably, the driving mechanism includes a motor, an output shaft, a mounting plate, a limit piece and a limit shaft, the motor is mounted on the mounting seat, the output shaft is mounted on the bottom end of the motor, the mounting plate is mounted on the motor, the limit piece is mounted on the mounting plate and matched with the slot, and the limit shaft is rotatably connected to the mounting plate and matched with the limit cylinder.

[0020] Preferably, a receiving hole for accommodating the cleaning mechanism is provided on the walking mechanism, a supporting ring for supporting the cleaning mechanism is provided inside the receiving hole, and a hydraulic cylinder is installed on the supporting ring.

[0021] By adopting the above technical scheme, the beneficial effects of the present invention are as follows: when the mounting assembly revolves, the rotating assembly and the cleaning assembly rotate at the same time. When the rotating assembly rotates, it drives the cleaning plate to reciprocate. During the process of inserting the cleaning plate into the rotary mechanism, a part of the lubricant is squeezed into the mounting assembly. During the resetting process of the cleaning plate, another part of the lubricant is scraped into the mounting assembly to clean the lubricant on the rotary mechanism. At the same time, the cleaning assembly rotates to transfer the lubricant entering the mounting assembly and scrape off the lubricant adhering to the cleaning plate to facilitate subsequent cleaning of the lubricant. During the process of the cleaning plate cleaning the rotary mechanism, the lubricating parts replenish the lubricant to the cleaned position to realize automatic replenishment of the lubricant without disassembling the excavator, thereby saving the time for replacing the lubricant and avoiding affecting the working efficiency of the excavator. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of a specific embodiment of the present invention.

[0023] Figure 2 It is a schematic structural diagram of the walking mechanism and the slewing mechanism of a specific embodiment of the present invention.

[0024] Figure 3 It is a schematic diagram of the structure of the rotary mechanism, cleaning mechanism, driving mechanism and lubricating part in a specific embodiment of the present invention.

[0025] Figure 4 It is a schematic diagram of a partial cross-sectional structure of a base in a specific embodiment of the present invention.

[0026] Figure 5 It is a schematic diagram of the explosion structure of the cleaning mechanism in a specific embodiment of the present invention.

[0027] Figure 6 It is a schematic diagram of the internal structure of the collecting tube of a specific embodiment of the present invention.

[0028] Figure 7 It is a schematic structural diagram of a rotating assembly in a specific embodiment of the present invention.

[0029] Figure 8 It is a schematic cross-sectional structure diagram of a cleaning component according to a specific embodiment of the present invention.

[0030] Fig. 9 It is a schematic structural diagram of a limit stop assembly according to a specific embodiment of the present invention.

[0031] Fig.10 It is a schematic structural diagram of a driving mechanism of a specific embodiment of the present invention.

[0032] Fig.11 It is a structural schematic diagram of a cleaning plate entering the gear ring in a specific embodiment of the present invention.

[0033] Fig.12 It is a structural schematic diagram of a cleaning plate removed from a gear ring in a specific embodiment of the present invention.

[0034] Reference numerals:

[0035] 10. Mounting seat;

[0036] 20. Traveling mechanism; 21. Base; 22. Traveling assembly; 23. Storage hole; 24. Slide; 25. Hydraulic cylinder; 26. Disassembly plate;

[0037] 30. Rotating mechanism; 31. Gear ring; 32. Rotating ring;

[0038] 40. Cleaning mechanism; 41. Mounting assembly; 411. Collecting cylinder; 412. Limiting cylinder; 413. Spring 1; 414. Closing plate; 415. Slot; 416. Spring 2; 417. Closing disk; 418. Through slot; 42. Support ring; 43. Sliding block; 44. Rotating assembly; 441. Transmission wheel 1; 442. Articulated column; 443. Articulated plate; 45. Cleaning plate; 46. Sliding bar; 47. Guide rail; 48. Cleaning assembly; 481. Rotating cylinder; 482. Transmission wheel 2; 483. Scraper; 484. Push plate; 485. Guide rod; 486. Sliding rod; 487. Spring 3; 49. Limiting assembly; 491. Fixing rod; 492. Limiting plate;

[0039] 50. driving mechanism; 51. motor; 52. output shaft; 53. gear; 54. transmission wheel three; 55. mounting plate; 56. stopper; 57. rotating shaft; 58. stopper shaft; 59. transmission wheel four;

[0040] 60. Lubricating parts;

[0041] 70. Cab;

[0042] 80. Clean the board. DETAILED DESCRIPTION

[0043] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0044] like Figures 1 to 12 As shown, the mining excavator of the present invention comprises a mounting seat 10, a traveling mechanism 20, a slewing mechanism 30, a cleaning mechanism 40, a driving mechanism 50, a lubricating member 60 and a cab 70. The slewing mechanism 30 is mounted between the mounting seat 10 and the traveling mechanism 20, the cab 70 is mounted on the mounting seat 10, the cleaning mechanism 40 is arranged on the inner side of the slewing mechanism 30, the driving mechanism 50 and the lubricating member 60 are both arranged inside the mounting seat 10, and in this embodiment, the lubricating member 60 is a lubrication gun.

[0045] The driving mechanism 50 can drive the cleaning mechanism 40 to rotate inside the rotating mechanism 30 . The cleaning mechanism 40 can clean the lubricant in the rotating mechanism 30 during the rotation, and can replenish the lubricant into the rotating mechanism 30 through the lubricating member 60 .

[0046] like Figures 1 to 4 As shown, the walking mechanism 20 includes a base 21 and two walking components 22 installed on the base 21. The walking component 22 is a crawler and a driving wheel rotatably connected to the crawler, and the driving wheel is connected to the base 21. A receiving hole 23 for receiving the cleaning mechanism 40 is provided at the bottom of the base 21, and slide grooves 24 are provided on both sides of the inside of the base 21 near the receiving hole 23. A hydraulic cylinder 25 for driving the cleaning mechanism 40 to move up and down is installed on the inner bottom wall of one of the slide grooves 24, and a disassembly plate 26 is threadedly connected to the lower part of the inside of the receiving hole 23.

[0047] Removing the disassembly plate 26 can open the receiving hole 23 to clean the lubricant collected in the cleaning mechanism 40, thereby facilitating the subsequent use of the cleaning mechanism 40.

[0048] like Figures 1 to 3 As shown, the slewing mechanism 30 includes a gear ring 31 and a slewing ring 32 . The gear ring 31 is installed on the top of the base 21 . The slewing ring 32 is rotatably connected to the outer side of the gear ring 31 . The bottom of the mounting seat 10 is installed on the top of the slewing ring 32 .

[0049] like Figures 2 to 5 As shown, the cleaning mechanism 40 includes a mounting assembly 41, a rotating assembly 44, a cleaning plate 45 and a cleaning assembly 48. A support ring 42 is provided at the bottom end of the mounting assembly 41, and sliders 43 slidably connected in the slide groove 24 are installed on both sides of the support ring 42, one of the sliders 43 is connected to the telescopic shaft of the hydraulic cylinder 25, and the driving mechanism 50 can drive the mounting assembly 41 to revolve around the axis of the gear ring 31.

[0050] The rotating assembly 44 is rotatably connected to the upper part of the interior of the mounting assembly 41, and the driving mechanism 50 can drive the rotating assembly 44 to rotate around the axis of the mounting assembly 41. The cleaning plate 45 is hinged on the rotating assembly 44, and the height of the cleaning plate 45 is the same as the height of the gear ring 31. The cleaning assembly 48 is rotatably connected to the inner top wall of the mounting assembly 41 and is arranged close to one side of the cleaning plate 45. The rotating assembly 44 is transmission-connected to the cleaning assembly 48, and a limit assembly 49 installed on the inner top wall of the mounting assembly 41 is arranged inside the cleaning assembly 48.

[0051] like Figure 5 and Figure 7As shown, a slide bar 46 is installed on one side of the cleaning plate 45 , and a guide rail 47 is slidably connected to the outer side of the slide bar 46 , and the guide rail 47 is installed on the inner wall of the mounting assembly 41 .

[0052] When the mounting assembly 41 revolves, the driving mechanism 50 drives the cleaning plate 45 to reciprocate through the rotating assembly 44. During the extension of the cleaning plate 45, it is inserted into the tooth gap of the ring gear 31 to squeeze a portion of the lubricant into the mounting assembly 41. During the resetting of the cleaning plate 45, another portion of the lubricant is scraped into the mounting assembly 41 to clean the lubricant on the ring gear 31. At the same time, the rotating assembly 44 drives the cleaning assembly 48 to rotate to transfer the lubricant entering the mounting assembly 41 and scrape off the lubricant adhering to the cleaning plate 45 to facilitate subsequent cleaning of the lubricant.

[0053] like Figures 2 to 8 As shown, the mounting assembly 41 includes a collecting tube 411 and a limiting tube 412. The bottom end of the collecting tube 411 is arranged at the top end of the supporting ring 42, and a through groove 418 is provided on the outside of the collecting tube 411 for the cleaning plate 45 to extend out, and the through groove 418 is arranged toward the inner side of the gear ring 31, and the outer side of the collecting tube 411 is tangent to the inner side of the gear ring 31, and the limiting tube 412 is rotatably connected to the top end of the collecting tube 411. The top end of the limiting tube 412 is located at the same horizontal plane as the top end of the collecting tube 411, and the bottom end of the limiting tube 412 passes through the collecting tube 411 and extends to the inside of the limiting tube 412, and the rotating assembly 44 is installed at the bottom end of the limiting tube 412. In this embodiment, the limiting tube 412 is an inner spline tube. A cleaning plate 80 located in the tangential direction of the cleaning assembly 48 is installed on the inner wall of the collecting tube 411 to scrape off the lubricant on the cleaning assembly 48.

[0054] A spring 413 is installed on the inner bottom wall of the limiting cylinder 412, and a sealing plate 414 slidably connected to the limiting cylinder 412 is installed on the top of the spring 413. In the initial position, the top of the sealing plate 414 and the top of the limiting cylinder 412 are located in the same horizontal plane to seal the top of the limiting cylinder 412 and prevent the lubricant from entering the interior of the limiting cylinder 412.

[0055] A slot 415 is provided at the top of the collecting tube 411 near the limiting tube 412 , a spring 416 is installed on the inner bottom wall of the slot 415 , and a sealing disk 417 slidably connected in the slot 415 is installed at the top of the spring 416 to seal at the top of the slot 415 .

[0056] like Figures 5 to 7As shown, the rotating assembly 44 includes a transmission wheel 1 441, a hinge column 442 and a hinge plate 443. The transmission wheel 1 441 is installed at the bottom end of the limiting cylinder 412, the hinge column 442 is installed at the bottom edge of the transmission wheel 1 441, one end of the hinge plate 443 is hinged to the outside of the hinge column 442, and the other end of the hinge plate 443 is hinged to one side of the cleaning plate 45 through a hinge seat.

[0057] When the driving wheel 441 rotates, the hinge column 442 can drive the cleaning plate 45 to move back and forth through the hinge plate 443. During the movement, the cleaning plate 45 can extend out of the collecting tube 411 and insert into the tooth gap of the gear ring 31. At the same time, as the collecting tube 411 revolves, the lubricant can be collected into the collecting tube 411 during the movement of the cleaning plate 45 to clean the lubricant.

[0058] like Figures 5 to 8 As shown, the cleaning assembly 48 includes a rotating cylinder 481, a plurality of scrapers 483 and a plurality of movable parts. The top of the rotating cylinder 481 is rotatably connected to one side of the inner top wall of the collecting cylinder 411, and a transmission wheel 2 482 connected to the transmission wheel 1 441 is installed on the outer side of the top of the rotating cylinder 481. In this embodiment, the transmission wheel 1 441 and the transmission wheel 2 482 are both pulleys, and the two are connected by belt transmission. In other embodiments, the transmission wheel 1 441 and the transmission wheel 2 482 are both sprockets, and the two are connected by chain transmission. A plurality of scrapers 483 are distributed on the outer side of the rotating cylinder 481 in an annular array with the axis of the rotating cylinder 481 as the center, and the outer side of the scraper 483 is arc-shaped, and the scraper 483 can contact with the cleaning plate 45, and the height of the scraper 483 is the same as the height of the cleaning plate 45. A plurality of movable parts are respectively arranged between each adjacent two scrapers 483 to push out the lubricant stuck between the two scrapers 483.

[0059] The transmission wheel 1 441 drives the rotating cylinder 481 to rotate through the transmission wheel 2 482 , and the rotating cylinder 481 drives the scraper 483 to rotate and scrape off the lubricant adhered to the cleaning plate 45 , and at the same time transfers the lubricant into the collecting cylinder 411 .

[0060] like Figure 5 and Figures 8 to 9As shown, the movable parts include a push plate 484, a guide rod 485 and a slide rod 486. The push plate 484 is in an arc shape and is located between the two scrapers 483. The guide rod 485 and the slide rod 486 are both slidably connected to the rotating cylinder 481. There are two guide rods 485, which are respectively installed at the top and bottom of the inner side of the push plate 484. One end of the guide rod 485 passes through the rotating cylinder 481 and extends to the inside of the rotating cylinder 481. The end of the guide rod 485 extending to the rotating cylinder 481 is spherical. The limit assembly 49 can contact the guide rod 485 to push the push plate 484 on the guide rod 485 to move. The slide bar 486 is installed in the middle of the inner side of the push plate 484, one end of the slide bar 486 passes through the rotating cylinder 481 and extends to the inside of the rotating cylinder 481, the shape of the slide bar 486 is T-shaped, and a spring 487 is installed between one end of the slide bar 486 and the inner wall of the rotating cylinder 481 to drive the push plate 484 to reset.

[0061] like Figures 5 to 9 As shown, the limiting assembly 49 includes a fixed rod 491 and two limiting plates 492. The fixed rod 491 and the rotating cylinder 481 are located on the same axis, and the fixed rod 491 is installed on the inner top wall of the collecting cylinder 411. The two limiting plates 492 are both installed on the outside of the fixed rod 491 and correspond to the upper and lower guide rods 485 respectively, and the outer side of the limiting plate 492 has an arc surface.

[0062] When the scraper 483 is no longer in contact with the cleaning plate 45, the guide rod 485 is in contact with the limit plate 492. At this time, under the action of the limit plate 492, the guide rod 485 can gradually push the push plate 484 to move outward to push out the lubricant between the two scrapers 483. When the push plate 484 moves to the extreme position, the outer side of the push plate 484 is tangent to the cleaning plate 80. At this time, the lubricant on the push plate 484 can be scraped off through the cleaning plate 80.

[0063] like Figure 1 , Figure 3 , Figure 6 , Figure 7 and Fig.10 As shown, the driving mechanism 50 includes a motor 51, an output shaft 52, a mounting plate 55, a stopper 56 and a stopper shaft 58. The motor 51 is mounted at the lower part of the mounting seat 10, and the output shaft 52 is mounted at the bottom end of the motor 51. The bottom end of the output shaft 52 is mounted with a gear 53 meshing with the gear ring 31. The mounting plate 55 is mounted on one side of the motor 51 and is located on the inner side of the slewing ring 32. The stopper 56 is mounted on one side of the bottom of the mounting plate 55 and can be inserted into the slot 415. The bottom of the mounting plate 55 is rotatably connected to a rotating shaft 57 near the stopper 56. The stopper shaft 58 is mounted at the bottom end of the rotating shaft 57. In this embodiment, the stopper shaft 58 is an external spline shaft, and the stopper shaft 58 is adapted to the stopper cylinder 412.

[0064] A transmission wheel three 54 is installed on the outer side of the output shaft 52, and a transmission wheel four 59 is installed on the outer side of the rotating shaft 57. The diameter of the transmission wheel three 54 is larger than the diameter of the transmission wheel four 59. In the present embodiment, the transmission wheel three 54 and the transmission wheel four 59 are both pulleys, and the two are connected by belt transmission. In other embodiments, the transmission wheel three 54 and the transmission wheel four 59 are both sprockets, and the two are connected by chain transmission.

[0065] Working principle: When the lubricant needs to be replaced, the hydraulic cylinder 25 drives the collecting barrel 411 to move upward through the support ring 42 on the slider 43. During the upward movement of the collecting barrel 411, the limit piece 56 is inserted into the slot 415, and the limit shaft 58 is inserted into the limit barrel 412. When the collecting barrel 411 is completely moved out of the base 21, the motor 51 drives the gear 53 to rotate through the output shaft 52. At this time, the motor 51 revolves around the axis of the ring gear 31. At the same time, the motor 51 drives the collecting barrel 411 to revolve through the limit piece 56 on the mounting plate 55.

[0066] When the collecting cylinder 411 is in orbit, the output shaft 52 drives the rotating shaft 57 in the transmission wheel 4 59 to rotate through the transmission wheel 3 54. At this time, the limiting shaft 58 drives the transmission wheel 1 441 to rotate through the limiting cylinder 412. During the rotation of the transmission wheel 1 441, the rotating cylinder 481 is driven to rotate.

[0067] When the driving wheel 441 rotates, the hinge column 442 drives the cleaning plate 45 to move back and forth through the hinge plate 443. When the cleaning plate 45 extends out of the collecting tube 411, the cleaning plate 45 is inserted into the tooth gap of the ring gear 31. At the same time, with the revolution of the collecting tube 411, the through groove 418 on the collecting tube 411 is located between the two teeth of the ring gear 31. Therefore, when the cleaning plate 45 is inserted into the tooth gap, the lubricant can be collected into the collecting tube 411 to prevent the lubricant from moving out of the collecting tube 411. When the cleaning plate 45 is reset, another part of the lubricant in the tooth gap can be scraped into the collecting tube 411.

[0068] The rotating cylinder 481 drives the scraper 483 to rotate synchronously during its rotation, so as to collect the lubricant scraped into the collecting cylinder 411 by the cleaning plate 45, and clean the lubricant on the cleaning plate 45 at the same time. During the cleaning process, the push plate 484 gradually moves outward to push out the lubricant between the two scrapers 483. When the push plate 484 moves to the extreme position, the outer side of the push plate 484 is tangent to the cleaning plate 80. At this time, the cleaning plate 80 scrapes off the lubricant on the scraper 483 and the push plate 484, so that the lubricant gathers in the collecting cylinder 411.

[0069] During the revolution of the motor 51, the mounting base 10 rotates synchronously. After the cleaning plate 45 cleans a tooth gap on the gear ring 31, the lubricating component 60 replenishes lubricant into the cleaned tooth gap to realize automatic replenishment of the lubricant without disassembling the excavator. The collecting barrel 411 returns to the top of the support ring 42 after one revolution. At this time, the hydraulic cylinder 25 drives the collecting barrel 411 to reset through the support ring 42 to store the collected lubricant in the storage hole 23.

[0070] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A mining excavator, comprising a mounting seat (10), a walking mechanism (20) and a slewing mechanism (30), characterized in that: A cleaning mechanism (40) for cleaning lubricant is provided inside the rotary mechanism (30), a driving mechanism (50) is provided inside the mounting seat (10) to drive the mounting seat (10) and the cleaning mechanism (40) to rotate, and a lubricating member (60) for replenishing lubricant is also provided inside the mounting seat (10); The cleaning mechanism (40) comprises a mounting assembly (41), a rotating assembly (44) rotatably connected to the upper part of the mounting assembly (41), a cleaning plate (45) hinged on the rotating assembly (44), and a cleaning assembly (48) rotatably connected to the mounting assembly (41). The cleaning plate (45) is slidably arranged on the mounting assembly (41) in a transverse direction to scrape off lubricant in the rotary mechanism (30). The mounting assembly (41) is provided with a cleaning plate (80) located in a tangential direction of the cleaning assembly (48). The driving mechanism (50) is capable of driving the mounting assembly (41) to rotate. 1) revolves around the axis of the rotary mechanism (30) and is capable of driving the rotating assembly (44) to rotate around itself; when the mounting assembly (41) revolves, the rotating assembly (44) drives the cleaning plate (45) to reciprocate into the rotary mechanism (30) to collect lubricant into the mounting assembly (41); at the same time, the rotating assembly (44) drives the cleaning assembly (48) to rotate to transfer the lubricant entering the mounting assembly (41) and scrape off the lubricant adhering to the cleaning plate (45); at the same time, the cleaning plate (80) scrapes off the lubricant adhering to the cleaning assembly (48); The mounting assembly (41) comprises a collecting cylinder (411) and a limiting cylinder (412) rotatably connected to the collecting cylinder (411); the cleaning plate (80) is mounted on the inner wall of the collecting cylinder (411); the rotating assembly (44) is mounted on the limiting cylinder (412); the rotating assembly (44) comprises a driving wheel 1 (441) mounted on the limiting cylinder (412); a hinge column (442) mounted at the bottom edge of the driving wheel 1 (441); and a hinge plate (443) hinged on the hinge column (442); and the cleaning plate (45) is hinged to the hinge plate (443).

2. The mining excavator according to claim 1, characterized in that: The outer side of the collecting cylinder (411) is provided with a through slot (418) for the cleaning plate (45) to extend out, the outer side of the collecting cylinder (411) is tangent to the inner side of the rotary mechanism (30), and the top end of the collecting cylinder (411) is provided with a slot (415) on a side close to the limiting cylinder (412).

3. The mining excavator according to claim 2, characterized in that: The interior of the limiting cylinder (412) is elastically slidably connected to a sealing plate (414) in the vertical direction to seal the limiting cylinder (412), and the interior of the slot (415) is elastically slidably connected to a sealing disk (417) in the vertical direction to seal the slot (415).

4. The mining excavator according to claim 2, characterized in that: The cleaning assembly (48) comprises a rotating cylinder (481), a plurality of scrapers (483) and a plurality of movable parts. The rotating cylinder (481) is rotatably connected to the inner top wall of the collecting cylinder (411) and is drivingly connected to a driving wheel (441). The plurality of scrapers (483) are distributed in an annular array on the outer side of the rotating cylinder (481) with the axis of the rotating cylinder (481) as the center. The cleaning plate (80) is arranged in a tangential direction of the scrapers (483). The plurality of movable parts are respectively arranged between each two adjacent scrapers (483).

5. The mining excavator according to claim 4, characterized in that: The movable part comprises a push plate (484), a slide rod (486) and two guide rods (485); the push plate (484) is arc-shaped and is located between the two scrapers (483); the two guide rods (485) are both mounted on the push plate (484); one end of the guide rod (485) passes through the rotating cylinder (481) and extends to the inside of the rotating cylinder (481); the slide rod (486) is mounted on the middle part of the inner side of the push plate (484); and the slide rod (486) is elastically slidably connected to the rotating cylinder (481) in a lateral direction.

6. The mining excavator according to claim 5, characterized in that: A fixing rod (491) mounted on the inner top wall of the rotating cylinder (481) is provided inside the rotating cylinder (481), and two limiting plates (492) for pushing the guide rod (485) to move are installed on the outer side of the fixing rod (491).

7. The mining excavator according to claim 2, characterized in that: The driving mechanism (50) comprises a motor (51), an output shaft (52), a mounting plate (55), a limiting member (56) and a limiting shaft (58); the motor (51) is mounted on a mounting seat (10); the output shaft (52) is mounted at the bottom end of the motor (51); the mounting plate (55) is mounted on the motor (51); the limiting member (56) is mounted on the mounting plate (55) and is matched with the slot (415); and the limiting shaft (58) is rotatably connected to the mounting plate (55) and is matched with the limiting cylinder (412).

8. The mining excavator according to any one of claims 1 to 7, characterized in that: The walking mechanism (20) is provided with a receiving hole (23) for accommodating the cleaning mechanism (40), and a support ring (42) for supporting the cleaning mechanism (40) is provided inside the receiving hole (23), and a hydraulic cylinder (25) is installed on the support ring (42).

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