Coal bucket of car dumper

By designing a combination of rotating shaft, adjustment plate and drive device in the coal bucket of the overturner, the problem that the existing coal bucket cannot adapt to the carriages of different sizes is solved, and flexible adjustment of the feed port size is achieved for easy use.

CN222664875UActive Publication Date: 2025-03-25CHN ENERGY YUEYANG POWER GENERATION CO LTD
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Patent Information

Application Number
CN202420738101.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-11
Publication Date
2025-03-25
Estimated Expiration
2034-04-11

AI Technical Summary

Technical Problem

The existing coal bucket of the overturner cannot directly adjust the size of the feed port, which makes it impossible to adapt to various carriages of different sizes, making it inconvenient to use.

Method used

A coal bucket for the overturner is designed, using a combination of a rotating shaft, an adjustment plate and a driving device. The size of the feed port is adjusted by adjusting the inclination angle of the plate to adapt to the carriage of different sizes.

Benefits of technology

It realizes flexible adjustment of the size of the coal bucket feed port, which can adapt to various sizes of cars and is easy to use.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of coal buckets, in particular to a car dumper coal bucket, which comprises a base, a coal unloading space and a coal bucket, the coal bucket main body is arranged above the base, the coal bucket main body downwards penetrates through the base, a discharging opening is formed in the lower portion of the coal bucket main body, and the discharging opening is located in the coal unloading space; the two groups of rotating shafts are oppositely arranged on the upper edge of the coal bucket main body; the two groups of adjusting plates are rotationally connected with the rotating shaft, and the size of the feeding hole is adjusted by changing the inclination angles of the adjusting plates; and the two groups of driving devices are connected with the adjusting plate and are used for changing the inclination angle of the adjusting plate. Through cooperation of the rotating shaft, the adjusting plate and the driving device, the adjusting plate can be driven by the driving device to rotate towards the outer side, the adjusting plate can rotate along the contact position of the adjusting plate and the rotating shaft, and therefore the size of the feeding port is increased, and the device can adapt to carriages of various sizes and is convenient to use.
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Description

Technical Field

[0001] The utility model relates to the technical field of coal hoppers, in particular to a coal hopper for a dumper. Background Art

[0002] Coal transportation is mainly carried out by train and truck. Train transportation has the advantages of low cost and large carrying capacity. After the coal is transported to the destination by train, it is often unloaded by a car dumper. A car dumper is a large mechanical equipment used to unload bulk materials from railway open cars. It can flip or tilt the rail car so that the coal loaded inside can be dumped into the coal hopper in a short time.

[0003] However, when the existing coal hopper of the car tipper is in use, the coal transport car is turned over by the car tipper and the coal blocks are poured into the coal hopper. However, due to the differences in the lengths of different cars, a corresponding coal hopper needs to be used each time the car is tipped over, and the size of the feed port of the coal hopper cannot be directly adjusted, resulting in the coal hopper being unable to adapt to cars of various sizes and being inconvenient to use. Utility Model Content

[0004] The utility model aims to solve the problem that the existing coal hopper of a car tipper cannot directly adjust the size of the feeding port of the coal hopper, resulting in the coal hopper being unable to adapt to carriages of various sizes, causing inconvenience in use.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A coal hopper for a dumper, comprising:

[0007] A base, wherein a coal unloading space is provided in the middle of the lower part of the base;

[0008] A coal hopper body is arranged above the base, and the coal hopper body passes through the base downwards, a discharge port is arranged below the coal hopper body, and the discharge port is located in the coal unloading space;

[0009] Two sets of rotating shafts are arranged oppositely on the upper edge of the coal hopper body;

[0010] Two sets of adjustment plates are rotatably connected to the rotation shaft, and the size of the feed opening can be adjusted by changing the inclination angle of the adjustment plates;

[0011] Two sets of driving devices are connected to the adjustment plate and are used to change the inclination angle of the adjustment plate.

[0012] Preferably, each group of the driving devices comprises:

[0013] A slot plate connected to the adjustment plate, wherein a first strip-shaped sliding slot is provided on the surface of the slot plate;

[0014] A protective shell connected to the coal hopper body;

[0015] A spur gear is disposed inside the protective housing;

[0016] A first motor, wherein an output end of the first motor is connected to the axis of the spur gear to drive the spur gear to rotate;

[0017] The rack is composed of a tooth plate and a cylindrical pin, and the top of the tooth plate is connected to the cylindrical pin; the tooth plate is meshed with the spur gear, and a second strip-shaped slide groove is provided on the surface of the tooth plate; the cylindrical pin is arranged in the first strip-shaped slide groove, and is slidably connected to the slot plate through the first strip-shaped slide groove.

[0018] Preferably, the driving device further comprises: a slider; the slider is arranged in the second strip-shaped slide groove, and is slidably connected to the rack through the second strip-shaped slide groove, so as to limit the rack to move only vertically.

[0019] Preferably, it also includes: elastic cloth; the elastic cloth is arranged above the edge of the coal hopper body and is vertically connected to the two groups of adjustment plates to block the coal blocks.

[0020] Preferably, it further comprises: a watering device; the watering device is arranged at the lower part of the base and located on both sides of the coal unloading space, and is used for sprinkling water on the coal blocks inside the coal unloading space.

[0021] Preferably, the sprinkler device comprises:

[0022] A water pump, wherein an input end of the water pump is connected to the base;

[0023] A telescopic hose, one end of which is connected to the output end of the water pump;

[0024] The atomizing nozzle is connected with the end of the telescopic hose away from the water pump.

[0025] Preferably, it further comprises: an adjusting device; the adjusting device is connected to the telescopic hose and is located directly above the watering device, and is used for adjusting the watering direction of the atomizing nozzle.

[0026] Preferably, the adjusting device comprises:

[0027] A screw rod is arranged inside the base;

[0028] A second motor, an output end of which is connected to the screw rod and is used to drive the screw rod to rotate;

[0029] A nut, threadedly connected to the screw;

[0030] A horizontal plate is disposed below the nut and connected to the nut, and moves horizontally with the nut;

[0031] The connecting plate is arranged between the transverse plate and the telescopic hose, and two ends of the connecting plate are rotatably connected to the transverse plate and the telescopic hose respectively.

[0032] Preferably, it further comprises: a material control device; the material control device is arranged above the interior of the base and located on both sides of the discharge port, and is used to control the discharge amount of coal blocks.

[0033] Preferably, the material control device comprises:

[0034] A support plate, arranged inside the base;

[0035] A bevel gear set, consisting of a first bevel gear and a second bevel gear, wherein the first bevel gear is meshed and connected with the second bevel gear, and the axis of the second bevel gear is rotatably connected with the support plate;

[0036] a third motor, wherein an output end of the third motor is connected to the axis of the first bevel gear and is used to drive the first bevel gear to rotate;

[0037] An eccentric rotating disk is coaxially arranged with the second bevel gear and rotates along with the second bevel gear, and an annular sliding groove is provided on the surface of the eccentric rotating disk;

[0038] The sealing plate is composed of a sealing member and a cylindrical pin, and one end of the sealing member is connected to the cylindrical pin; the cylindrical pin is arranged in the annular groove and is slidably connected to the eccentric rotating disk through the annular groove.

[0039] The beneficial effect proposed by the utility model is that through the cooperation between the rotating shaft, the adjustment plate and the driving device, the driving device can drive the adjustment plate to rotate outward, and the adjustment plate will rotate along the contact with the rotating shaft, thereby increasing the size of the feed port, which can adapt to various sizes of carriages and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the structure of the utility model;

[0041] Figure 2 for Figure 1 Schematic diagram of the main plan view of the internal connection structure;

[0042] Figure 3 for Figure 2 Schematic diagram of the connection structure at A in the middle;

[0043] Figure 4 for Figure 2 Schematic diagram of the connection structure at B in the middle;

[0044] Figure 5 for Figure 2 Schematic diagram of the connection structure at point C in the middle.

[0045] In the figure: 1. coal hopper body, 2. base, 3. discharge port, 4. protective shell, 5. spur gear, 6. first motor, 7. rack, 8. groove plate, 9. slide block, 10. elastic cloth, 11. adjustment plate, 12. water pump, 13. telescopic hose, 14. atomizing nozzle, 15. screw, 16. second motor, 17. nut, 18. cross plate, 19. connecting plate, 20. bevel gear set, 21. third motor, 22. eccentric turntable, 23. sealing plate, 24. support plate. DETAILED DESCRIPTION

[0046] The utility model is further described below in conjunction with the accompanying drawings:

[0047] This embodiment:

[0048] See also Figure 1-5 In this embodiment: a coal hopper of a dumper includes: a base 2, a coal hopper body 1, two sets of rotating shafts, two sets of adjusting plates 11, and two sets of driving devices.

[0049] Specifically, a coal unloading space is provided in the middle below the base 2. The coal unloading space is a square space that is transparent from front to back and has a size that can accommodate vehicles entering. The coal hopper body 1 is provided above the base 2, and the coal hopper body 1 penetrates the base 2 downward. A discharge port 3 is provided below the coal hopper body 1, and the discharge port 3 is located in the coal unloading space. The discharge port 3 is vertically arranged for unloading coal blocks onto vehicles.

[0050] As an embodiment of the utility model, the upper and lower ends of the coal hopper body 1 are open, and the shape consists of two hollow cuboids and a hollow quadrangular prism, and the quadrangular prism is located between the two cuboids, and the size of the upper cuboid is twice that of the lower cuboid.

[0051] In this embodiment, two sets of rotating shafts are relatively arranged at the upper edge of the coal hopper body 1; two sets of adjusting plates 11 are rotatably connected to the rotating shafts, and the size of the feed port is adjusted by changing the inclination angle of the adjusting plates 11. When the adjusting plates 11 rotate outward, the size of the feed port will be increased to accommodate a larger carriage; two sets of driving devices are connected to the adjusting plates 11 to change the inclination angle of the adjusting plates 11.

[0052] In this embodiment, each set of driving devices includes: a slot plate 8 , a protective housing 4 , a spur gear 5 , a first motor 6 and a rack 7 .

[0053] Among them, the groove plate 8 is connected to the adjustment plate 11, and a first strip-shaped slide groove is provided on the surface of the groove plate 8; the protective shell 4 is connected to the coal hopper body 1, and the protective shell 4 can protect the internal parts; the spur gear 5 is arranged inside the protective shell 4; the output end of the first motor 6 is connected to the axis of the spur gear 5, which is used to drive the spur gear 5 to rotate. The model of the first motor 6 is selected according to actual needs and meets the working conditions; the rack 7 is composed of a tooth plate and a cylindrical pin, and the upper part of the tooth plate is connected to the cylindrical pin; the tooth plate is meshed with the spur gear 5, and when the spur gear 5 rotates, the rack 7 will move vertically, and a second strip-shaped slide groove is provided on the surface of the tooth plate; the cylindrical pin is arranged in the first strip-shaped slide groove, and is slidably connected to the groove plate 8 through the first strip-shaped slide groove. When the rack 7 moves downward, it will drive the cylindrical pin to move, and the cylindrical pin slides between the first strip-shaped slide groove, so that the groove plate 8 drives the adjustment plate 11 to rotate outward.

[0054] The user starts the first motor 6, and the output end of the first motor 6 drives the spur gear 5 to rotate. The spur gear 5 causes the rack 7 to move vertically downward. The rack 7 drives the cylindrical pin to move at the same time. The cylindrical pin slides with the first strip slide groove, causing the groove plate 8 to drive the adjustment plate 11 to rotate outward, thereby increasing the size of the feed port, which can adapt to various sizes of carriages and is easy to use.

[0055] As an embodiment of the utility model, the driving device also includes: a slider 9; the slider 9 is arranged in the second strip-shaped slide groove, and is slidably connected to the rack 7 through the second strip-shaped slide groove, for limiting the rack 7 to move only vertically, and the slider 9 is a rectangular parallelepiped.

[0056] As an embodiment of the utility model, the coal hopper of the dumper also includes: an elastic cloth 10; the elastic cloth 10 is arranged above the edge of the coal hopper body 1, and is vertically connected to two sets of adjustment plates 11, and is used to block coal blocks. The elastic cloth 10 has good elasticity and is used to prevent coal blocks from flying out. When the adjustment plate 11 rotates outward, the elastic cloth 10 will be in a stretched state.

[0057] During the discharging process, the moisture in the coal evaporates quickly and the coal structure is loose, which will cause the surface of the coal seam to scatter during the falling process.

[0058] In order to solve the above problems, an implementation method of this embodiment is proposed, the coal hopper of the dumper also includes: a sprinkler; the sprinkler is arranged at the lower part of the base 2 and on both sides of the coal unloading space, and is used to sprinkle water on the coal blocks inside the coal unloading space.

[0059] The watering device comprises a water pump 12 , a telescopic hose 13 and an atomizing nozzle 14 .

[0060] In this embodiment, the input end of the water pump 12 is connected to the base 2, and a liquid inlet is arranged at the rear of the base 2, and the position of the liquid inlet is above the internal liquid level. The model of the water pump 12 is selected according to actual needs and meets the working conditions; one end of the telescopic hose 13 is connected to the output end of the water pump 12; the atomizing nozzle 14 is connected to the end of the telescopic hose 13 away from the water pump 12.

[0061] Start the water pump 12, which will extract the mixed liquid of the inhibitor and water in the base 2 and send it to the atomizing nozzle 14 through the telescopic hose 13. The atomizing nozzle 14 will convert the liquid into mist and spray it out, so that the liquid can fully contact with the coal blocks, avoiding scattering on the surface of the coal seam and preventing coal ash from flying during transportation and polluting the environment.

[0062] During the falling process of coal blocks, the coal blocks will generate a large amount of smoke and dust, which is relatively light in weight and will accumulate at the contact position between the coal hopper body 1 and the sealing plate 23. After a long period of accumulation, the sealing plate 23 will be blocked and unable to slide.

[0063] In order to solve the above problem, an implementation method of this embodiment is proposed, the coal hopper of the dumper also includes: an adjustment device; the adjustment device is connected to the telescopic hose 13 and is located directly above the sprinkler device, and is used to adjust the sprinkler direction of the atomizing nozzle 14.

[0064] The adjusting device comprises: a screw rod 15 , a second motor 16 , a nut 17 , a transverse plate 18 and a connecting plate 19 .

[0065] Specifically, the screw 15 is arranged inside the base 2; the output end of the second motor 16 is connected to the screw 15, and is used to drive the screw 15 to rotate. The model of the second motor 16 is selected according to actual needs and meets the working conditions; the nut 17 is threadedly connected to the screw 15, and when the screw 15 rotates, the nut 17 will move horizontally; the cross plate 18 is arranged below the nut 17 and is connected to the nut 17, and moves horizontally with the nut 17; the connecting plate 19 is arranged between the cross plate 18 and the telescopic hose 13, and the two ends of the connecting plate 19 are respectively rotatably connected to the cross plate 18 and the telescopic hose 13. When the cross plate 18 moves horizontally, the connecting plate 19 will rotate, and the connecting plate 19 will drive the telescopic hose 13 to rotate at the same time, thereby changing the direction of the atomizing nozzle 14.

[0066] Start the second motor 16, and the output end of the second motor 16 drives the screw 15 to rotate, the screw 15 makes the nut 17 move horizontally, and the nut 17 drives the cross plate 18 to rotate at the same time, and the cross plate 18 makes the connecting plate 19 rotate. When the cross plate 18 moves to the middle, the telescopic hose 13 is deflected upward through the connecting plate 19, so that the atomizing nozzle 14 sprays mist to the contact position between the coal hopper body 1 and the sealing plate 23, so that the smoke and mist contact each other, forming sewage flowing downward, avoiding the clogging of the sealing plate 23, and ensuring the normal sliding of the sealing plate 23.

[0067] During the process of coal blocks falling, due to the different sizes of different receiving vehicles, there are differences in the amount of coal blocks that can be held, and the existing coal hopper cannot accurately control the amount of coal blocks transported each time.

[0068] In order to solve the above problems, an implementation method of this embodiment is proposed, the coal hopper of the dumper also includes: a material control device; the material control device is arranged on the upper part of the base 2 and located on both sides of the discharge port 3, for controlling the discharge amount of coal blocks.

[0069] The material controlling device comprises: a supporting plate 24 , a bevel gear set 20 , a third motor 21 , an eccentric rotating disc 22 and a sealing plate 23 .

[0070] Among them, the support plate 24 is arranged inside the base 2; the bevel gear set 20 is composed of a first bevel gear and a second bevel gear, and the first bevel gear is meshed and connected with the second bevel gear, the axis of the second bevel gear is rotatably connected with the support plate 24, and the support plate 24 can rotatably support the second bevel gear; the output end of the third motor 21 is connected with the axis of the first bevel gear to drive the first bevel gear to rotate. The model of the third motor 21 is selected according to actual needs and meets the working conditions; the eccentric turntable 22 is coaxially arranged with the second bevel gear and rotates with the second bevel gear. An annular groove is provided on the surface of the eccentric turntable 22, and the second bevel gear drives the eccentric turntable 22 to rotate; the sealing plate 23 is composed of a sealing member and a cylindrical pin, and one end of the sealing member is connected to the cylindrical pin; the cylindrical pin is arranged in the annular groove and is slidably connected to the eccentric turntable 22 through the annular groove. When the eccentric turntable 22 rotates, the sealing plate 23 will move horizontally through the sliding between the annular groove and the cylindrical pin.

[0071] Start the third motor 21, and the output end of the third motor 21 drives the bevel gear set 20 to rotate. The bevel gear set 20 also drives the eccentric turntable 22 to rotate. The eccentric turntable 22 slides between the annular groove and the cylindrical pin to move the sealing plate 23 horizontally. When the sealing plate 23 moves outward, the discharge port 3 is opened to allow the coal blocks to fall. The rotation speed of the third motor 21 is controlled to control the discharge amount of the coal blocks each time.

[0072] Working principle:

[0073] When the coal hopper of the car tipper is in use, the device is first moved to one side of the car tipper. Before the car tipper tipps, the first motor 6 is started according to the size of the car. The output end of the first motor 6 drives the spur gear 5 to rotate. The spur gear 5 causes the rack 7 to move vertically downward. The rack 7 drives the cylindrical pin to move at the same time. The cylindrical pin slides with the first strip chute, so that the groove plate 8 drives the adjustment plate 11 to rotate outward, thereby increasing the size of the feed port. It can adapt to cars of various sizes and is easy to use. When unloading is required, the third motor 21 is started. The output end of the third motor 21 drives the bevel gear set 20 to rotate. The bevel gear set 20 also drives the eccentric turntable 22 to rotate. The eccentric turntable 22 slides between the annular chute and the cylindrical pin, so that the sealing plate 23 moves horizontally. When the sealing plate 23 moves outward, the discharge port 3 is opened to allow the coal blocks to fall. The rotation speed of the third motor 21 is controlled to control the discharge amount of the coal blocks each time. During this process, the water pump 12 is started, and the water pump 12 will extract the mixed liquid of the inhibitor and water in the base 2, and send it to the atomizing nozzle 14 through the telescopic hose 13. The atomizing nozzle 14 will convert the liquid into mist and spray it out, so that the liquid is fully in contact with the coal block, avoiding scattering on the surface of the coal seam, and preventing coal ash from flying during transportation to pollute the environment. After unloading is completed, the second motor 16 is started, and the output end of the second motor 16 drives the screw 15 to rotate, and the screw 15 causes the nut 17 to move horizontally. The nut 17 also drives the cross plate 18 to rotate, and the cross plate 18 causes the connecting plate 19 to rotate. When the cross plate 18 moves to the middle, the telescopic hose 13 will be deflected upward through the connecting plate 19, so that the atomizing nozzle 14 sprays the mist to the contact position between the coal hopper body 1 and the sealing plate 23, so that the smoke and the mist are in contact, forming sewage flowing downward, avoiding the clogging of the sealing plate 23, ensuring the normal sliding of the sealing plate 23, and completing the use of this device.

[0074] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A coal hopper for a car dumper, characterized in that: include: A base (2), wherein a coal unloading space is provided in the middle of the lower portion of the base (2); A coal hopper body (1) is arranged above the base (2), and the coal hopper body (1) passes through the base (2) downwards; a discharge port (3) is arranged below the coal hopper body (1), and the discharge port (3) is located in the coal unloading space; Two sets of rotating shafts are arranged opposite to each other on the upper edge of the coal hopper body (1); Two groups of adjustment plates (11) are rotatably connected to the rotation shaft, and the size of the feed opening is adjusted by changing the inclination angle of the adjustment plates (11); Two sets of driving devices are connected to the adjustment plate (11) and are used to change the inclination angle of the adjustment plate (11).

2. The coal hopper of a car dumper according to claim 1, characterized in that: Each set of the driving devices comprises: A slot plate (8) connected to the adjustment plate (11), wherein a first strip-shaped sliding groove is provided on the surface of the slot plate (8); A protective shell (4) connected to the coal hopper body (1); A spur gear (5) is arranged inside the protective housing (4); A first motor (6), wherein an output end of the first motor (6) is connected to the axis of the spur gear (5) and is used to drive the spur gear (5) to rotate; The rack (7) is composed of a tooth plate and a cylindrical pin, and the upper part of the tooth plate is connected to the cylindrical pin; the tooth plate is meshingly connected to the spur gear (5), and a second strip-shaped slide groove is provided on the surface of the tooth plate; the cylindrical pin is arranged in the first strip-shaped slide groove, and is slidably connected to the slot plate (8) through the first strip-shaped slide groove.

3. The coal hopper of a car dumper according to claim 2, characterized in that: The driving device further comprises: a slider (9); the slider (9) is arranged in the second strip-shaped slide groove and is slidably connected to the rack (7) via the second strip-shaped slide groove, so as to limit the rack (7) to only vertical movement.

4. The coal hopper of a car dumper according to claim 1, characterized in that: Also includes: Elastic cloth (10); the elastic cloth (10) is arranged above the edge of the coal hopper body (1) and is vertically connected to the two groups of adjustment plates (11) to block the coal blocks.

5. The coal hopper of a car dumper according to claim 1, characterized in that: Also includes: A watering device; the watering device is arranged at the lower part of the base (2) and is located on both sides of the coal unloading space, and is used to sprinkle water on the coal blocks inside the coal unloading space.

6. The coal hopper of a car dumper according to claim 5, characterized in that: The sprinkler device comprises: A water pump (12), wherein an input end of the water pump (12) is connected to the base (2); a telescopic hose (13), one end of which is connected to the output end of the water pump (12); The atomizing nozzle (14) is connected to an end of the telescopic hose (13) away from the water pump (12).

7. The coal hopper of a car dumper according to claim 6, characterized in that: Also includes: The regulating device is connected to the telescopic hose (13) and is located directly above the watering device, and is used to adjust the watering direction of the atomizing nozzle (14).

8. The coal hopper of a car dumper according to claim 7, characterized in that: The regulating device comprises: A screw (15) is arranged inside the base (2); a second motor (16), wherein an output end of the second motor (16) is connected to the screw rod (15) and is used to drive the screw rod (15) to rotate; A nut (17) threadedly connected to the screw rod (15); A horizontal plate (18) is disposed below the nut (17) and connected to the nut (17) to move horizontally with the nut (17); A connecting plate (19) is arranged between the transverse plate (18) and the telescopic hose (13), and two ends of the connecting plate (19) are rotatably connected to the transverse plate (18) and the telescopic hose (13) respectively.

9. The coal hopper of a car dumper according to claim 1, characterized in that: Also includes: A material control device; the material control device is arranged above the interior of the base (2) and located on both sides of the discharge port (3) and is used to control the discharge amount of coal blocks.

10. The coal hopper of a car dumper according to claim 9, characterized in that: The material control device comprises: A support plate (24) is arranged inside the base (2); A bevel gear set (20), consisting of a first bevel gear and a second bevel gear, wherein the first bevel gear is meshingly connected with the second bevel gear, and the axis of the second bevel gear is rotatably connected with the support plate (24); a third motor (21), wherein an output end of the third motor (21) is connected to the axis of the first bevel gear and is used to drive the first bevel gear to rotate; An eccentric rotating disk (22) is coaxially arranged with the second bevel gear and rotates along with the second bevel gear, and an annular sliding groove is provided on the surface of the eccentric rotating disk (22); The sealing plate (23) is composed of a sealing member and a cylindrical pin, and one end of the sealing member is connected to the cylindrical pin; the cylindrical pin is arranged in the annular groove and is slidably connected to the eccentric rotating disk (22) through the annular groove.