Rubber wheel road roller

Abstract

The utility model relates to the technical field of rubber-tired road rollers, in particular to a rubber-tired road roller, which is convenient for cleaning impurities and stones on a rubber wheel, improves the convenience, is convenient for adjusting the flow speed of oil injection, and is convenient for reminding an operator to timely supplement anti-sticking oil. Comprising a road rolling mechanism; the device further comprises a scraping mechanism, a cleaning mechanism, an oil injection mechanism, an oil mass detection mechanism and a speed control mechanism, the scraping mechanism is installed on the road pressing mechanism, the cleaning mechanism is installed on the scraping mechanism, the oil injection mechanism is installed on the road pressing mechanism, the oil mass detection mechanism is installed on the oil injection mechanism, and the speed control mechanism is installed on the oil injection mechanism. A road surface is conveniently flattened through the road pressing mechanism, impurities and stones on the road pressing mechanism are cleaned through the scraping mechanism, the impurities and the stones cleaned by the scraping mechanism are conveniently discharged through the cleaning mechanism, and the road pressing mechanism is coated with oil through the oil spraying mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic tyre rollers, in particular to a pneumatic tyre roller. Background Art

[0002] The working principle of a pneumatic tyre roller is mainly based on the interaction between the pneumatic tyre and the paving layer. During the compaction operation, in the vertical direction, the paving layer is subjected to the vertical static load caused by the gravity of the pneumatic tyre roller, so that the moisture and air between the asphalt mixture particles are squeezed out, and the mosaic structure formed by the particles tends to be stable, thereby increasing the density of the paving layer. In the horizontal plane in the advancing direction of the roller, the interaction between the paving layer and the pneumatic tyre roller is mainly manifested as the running resistance of the pneumatic tyre roller, and this resistance produces a shearing effect on the paving layer material, causing the asphalt mixture particles to move relatively, realizing the re-combination of positions, and further improving the density of the paving layer.

[0003] Existing pneumatic tyre rollers, such as the prior art with the application number CN202020642628.2, include a vehicle body, wheels, a front vehicle wheel, a rear vehicle wheel, a scraping mechanism, a scraper, a receiving plate, a chute, an oil flow hole, a connecting rod, a first baffle, a second baffle, a sliding block and a brushing mechanism, etc. When it is necessary to clean the stones, dirt, etc. between the scraper and the receiving plate, the first baffle is disassembled and separated from the scraper and the receiving plate, and then the second baffle is slid in the direction close to the first baffle. At this time, the second baffle can push the stones, dirt, etc. between the scraper and the receiving plate to separate from between the scraper and the receiving plate from the end where the scraper and the receiving plate are connected to the first baffle, so that the collected stones, dirt, etc. are easily cleaned.

[0004] However, the impurities and stones cleaned by the prior art are not convenient for automatic removal. During long-term operation, it is necessary to stop the machine for cleaning, resulting in reduced efficiency. And the prior art is not convenient for adjusting the oil injection speed, resulting in reduced practicability. Summary of the Utility Model

[0005] In order to solve the above technical problems, the utility model provides a pneumatic tyre roller which is convenient for cleaning impurities and stones on the pneumatic tyre, improves convenience, is convenient for adjusting the flow rate of the injected oil, and is convenient for reminding the operator to timely replenish the anti-sticking oil.

[0006] A kind of rubber-tyred roller of the utility model includes a road rolling mechanism; it also includes a scraping mechanism, a cleaning mechanism, an oil spraying mechanism, an oil quantity detection mechanism and a speed control mechanism. The scraping mechanism is installed on the road rolling mechanism, the cleaning mechanism is installed on the scraping mechanism, the oil spraying mechanism is installed on the road rolling mechanism, the oil quantity detection mechanism is installed on the oil spraying mechanism, and the speed control mechanism is installed on the oil spraying mechanism. The road rolling mechanism is convenient for flattening the road surface. The scraping mechanism cleans the impurities and stones on the road rolling mechanism. The cleaning mechanism is convenient for discharging the impurities and stones cleaned by the scraping mechanism. The oil spraying mechanism applies oil to the road rolling mechanism. The oil quantity detection mechanism detects the oil quantity in the oil spraying mechanism. The speed control mechanism is convenient for adjusting the oil spraying rate; the road rolling mechanism is convenient for flattening the road surface. The scraping mechanism cleans the impurities and stones on the road rolling mechanism. The cleaning mechanism is convenient for discharging the impurities and stones cleaned by the scraping mechanism, improving convenience. The oil spraying mechanism applies oil to the road rolling mechanism, reducing adhesion. The oil quantity detection mechanism detects the oil quantity in the oil spraying mechanism, facilitating reminding the operator to replenish in time. The speed control mechanism is convenient for adjusting the oil spraying rate.

[0007] Preferably, the road rolling mechanism includes a pressure drive motor and a rubber wheel. The rubber wheel is rotatably installed on the pressure drive motor; by turning on the pressure drive motor to drive the rubber wheel to rotate, the road surface is flattened by the rotation of the rubber wheel.

[0008] Preferably, the scraping mechanism includes a mounting frame, a storage box and an arc-shaped scraper. The storage box is installed on the pressure drive motor through the mounting frame, and the arc-shaped scraper is installed on the mounting frame; when the rubber wheel rotates to flatten the road surface, the arc-shaped scraper scrapes the impurities and stones adhered to the rubber wheel, so that the impurities and stones enter the storage box. By opening the cleaning mechanism, the impurities and stones in the storage box are cleaned, improving practicability and convenience.

[0009] Preferably, the cleaning mechanism includes a rotating shaft, a screw blade, a discharge port and a first motor. The rotating shaft is rotatably installed in the storage box, the screw blade is installed on the rotating shaft, the two sides of the screw blade are in opposite directions, the discharge port is installed at the lower end of the storage box, and the first motor is installed on the side wall of the storage box. The output end of the first motor is connected to the rotating shaft; when the rubber wheel rotates to flatten the road surface, the arc-shaped scraper scrapes the impurities and stones adhered to the rubber wheel, so that the impurities and stones enter the storage box. By turning on the first motor to drive the rotating shaft to rotate, and then driving the screw blade to rotate, the impurities and stones in the storage box are discharged from the discharge port, improving practicability and convenience.

[0010] Preferably, the oil injection mechanism includes an oil storage tank, an oil pump, a distribution oil pipe, an oil injector, and an oil pipe. The oil storage tank is installed at the top of the pressure drive, the oil pump is installed on the outer wall of the oil storage tank, the distribution oil pipe is installed inside the pressure drive, the oil injector is installed on the distribution oil pipe, the bottom end of the oil injector is close to the rubber wheel, one end of the oil pipe is installed on the oil pump, and the other end of the oil pipe is installed on the distribution oil pipe; First, the anti-sticking oil is added to the oil storage tank, the anti-sticking oil is added to the distribution oil pipe through the oil pipe by turning on the oil pump, and then sprayed on the rubber wheel through the oil injector, thereby reducing the adhesion between the rubber wheel and impurities and stones.

[0011] Preferably, the oil quantity detection mechanism includes a sliding sleeve, a buoyancy sliding plate, a push rod, a limit plate, a bracket, and a proximity switch. The sliding sleeve is installed inside the pressure drive, the sliding sleeve is internally connected to the oil storage tank, the buoyancy sliding plate is slidably installed inside the sliding sleeve by buoyancy, the push rod is installed on the buoyancy sliding plate, the limit plate is installed at the top of the push rod, the proximity switch is installed at the top of the oil storage tank through the bracket, and a buzzer is arranged on the outer wall of the oil storage tank; As the anti-sticking oil is used, the oil level in the oil storage tank decreases, and then the buoyancy sliding plate slides downward inside the sliding sleeve through buoyancy, and then drives the limit plate to descend through the push rod. When the limit plate and the proximity switch are on the same horizontal plane, an electrical signal is sent through the proximity switch to control the buzzer to alarm, reminding the operator to come and replenish.

[0012] Preferably, the speed control mechanism includes an adjustment housing, a fixed oil passing plate, a rotating oil passing plate, a bevel gear ring, a bevel gear, and an adjustment motor. The adjustment housing is installed on the oil pipe, the fixed oil passing plate is installed on the inner wall of the adjustment housing, the rotating oil passing plate is rotatably installed on the inner wall of the adjustment housing, both the fixed oil passing plate and the rotating oil passing plate are provided with material passing ports, the bevel gear ring is installed on the rotating oil passing plate, the bevel gear is rotatably installed inside the adjustment housing through a rotating shaft, the bevel gear meshes with the bevel gear ring, the adjustment motor is installed on the outer wall of the adjustment housing, and the output end of the adjustment motor is connected to the rotating shaft of the bevel gear; By turning on the adjustment motor to drive the bevel gear to rotate, and then driving the distribution oil pipe to rotate through the meshing relationship, the flow rate of the anti-sticking oil is adjusted by the overlapping size of the material passing ports of the distribution oil pipe and the oil pump, improving the practicability.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: The road rolling mechanism facilitates flattening the road surface, the scraping mechanism cleans impurities and stones on the road rolling mechanism, the cleaning mechanism facilitates discharging the impurities and stones cleaned by the scraping mechanism, improving convenience. The oil injection mechanism applies oil to the road rolling mechanism to reduce adhesion. The oil quantity detection mechanism detects the oil quantity in the oil injection mechanism to facilitate reminding the operator to replenish in time. The speed control mechanism facilitates adjusting the oil injection rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the first axonometric structural schematic diagram of the present utility model;

[0015] Figure 2 is the second isometric structural schematic diagram of the present utility model;

[0016] Figure 3 is the first side view sectional isometric structural schematic diagram of the present utility model;

[0017] Figure 4 is the second side view sectional isometric structural schematic diagram of the present utility model;

[0018] Figure 5 is the front view sectional structural schematic diagram of the present utility model;

[0019] Figure 6 is the isometric structural schematic diagram of the speed control mechanism of the present utility model;

[0020] Figure 7 is of the present utility model Figure 7 sectional isometric structural schematic diagram;

[0021] Reference numerals in the drawings: 01, road rolling mechanism; 11, pressure drive motor; 12, rubber wheel; 02, scraping mechanism; 21, mounting bracket; 22, storage box; 23, arc-shaped scraper; 03, cleaning mechanism; 31, rotating shaft; 32, auger blade; 33, discharge port; 34, first motor; 04, oil spraying mechanism; 41, oil storage tank; 42, oil pump; 43, sub-oil pipe; 44, oil injection nozzle; 45, oil pipe; 05, oil quantity detection mechanism; 51, sliding sleeve; 52, buoyancy sliding plate; 53, push rod; 54, limit plate; 55, support; 56, proximity switch; 06, speed control mechanism; 61, adjustment housing; 62, fixed oil passing plate; 63, rotating oil passing plate; 64, bevel gear ring; 65, bevel gear; 66, adjustment motor. Detailed implementation manners

[0022] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.

[0023] Embodiment 1

[0024] As Figure 2 and Figure 3 shown, a rubber wheel roller includes a road rolling mechanism 01, and further includes a scraping mechanism 02, a cleaning mechanism 03, an oil spraying mechanism 04, an oil quantity detection mechanism 05 and a speed control mechanism 06. The scraping mechanism 02 is installed on the road rolling mechanism 01, the cleaning mechanism 03 is installed on the scraping mechanism 02, the oil spraying mechanism 04 is installed on the road rolling mechanism 01, the oil quantity detection mechanism 05 is installed on the oil spraying mechanism 04, and the speed control mechanism 06 is installed on the oil spraying mechanism 04;

[0025] The road rolling mechanism 01 facilitates the flattening of the road surface. The scraping mechanism 02 cleans the impurities and stones on the road rolling mechanism 01. The cleaning mechanism 03 facilitates the discharge of the impurities and stones cleaned by the scraping mechanism 02. The oil spraying mechanism 04 applies oil to the road rolling mechanism 01. The oil quantity detection mechanism 05 detects the oil quantity in the oil spraying mechanism 04. The speed control mechanism 06 facilitates the adjustment of the oil spraying rate;

[0026] The road rolling mechanism 01 includes a pressure drive motor 11 and a rubber wheel 12. The rubber wheel 12 is rotatably installed on the pressure drive motor 11;

[0027] The scraping mechanism 02 includes a mounting frame 21, a storage box 22, and an arc-shaped scraper 23. The storage box 22 is installed on the pressure drive motor 11 through the mounting frame 21. The arc-shaped scraper 23 is installed on the mounting frame 21;

[0028] The cleaning mechanism 03 includes a rotating shaft 31, a screw blade 32, a discharge port 33, and a first motor 34. The rotating shaft 31 is rotatably installed in the storage box 22. The screw blade 32 is installed on the rotating shaft 31. The two sides of the screw blade 32 have opposite directions. The discharge port 33 is installed at the lower end of the storage box 22. The first motor 34 is installed on the side wall of the storage box 22. The output end of the first motor 34 is connected to the rotating shaft 31;

[0029] By turning on the pressure drive motor 11 to drive the rotation of the rubber wheel 12, the road surface is flattened by the rotation of the rubber wheel 12. When the rubber wheel 12 rotates to flatten the road surface, the arc-shaped scraper 23 scrapes the adhered impurities and stones on the rubber wheel 12, so that the impurities and stones enter the storage box 22. By turning on the first motor 34 to drive the rotation of the rotating shaft 31, and then driving the rotation of the screw blade 32 to discharge the impurities and stones in the storage box 22 from the discharge port 33, the practicability and convenience are improved.

[0030] Embodiment 2

[0031] As Figures 1 to 7 shown, a rubber wheel road roller includes a road rolling mechanism 01, and also includes a scraping mechanism 02, a cleaning mechanism 03, an oil spraying mechanism 04, an oil quantity detection mechanism 05, and a speed control mechanism 06. The scraping mechanism 02 is installed on the road rolling mechanism 01. The cleaning mechanism 03 is installed on the scraping mechanism 02. The oil spraying mechanism 04 is installed on the road rolling mechanism 01. The oil quantity detection mechanism 05 is installed on the oil spraying mechanism 04. The speed control mechanism 06 is installed on the oil spraying mechanism 04;

[0032] The road roller mechanism 01 facilitates the flattening of the road surface. The scraping mechanism 02 cleans the impurities and stones on the road roller mechanism 01. The cleaning mechanism 03 facilitates the discharge of the impurities and stones cleaned by the scraping mechanism 02. The oil spraying mechanism 04 applies oil to the road roller mechanism 01. The oil quantity detection mechanism 05 detects the oil quantity in the oil spraying mechanism 04. The speed control mechanism 06 facilitates the adjustment of the oil spraying rate.

[0033] The oil spraying mechanism 04 includes an oil storage tank 41, an oil pump 42, a distribution oil pipe 43, an oil nozzle 44, and an oil pipe 45. The oil storage tank 41 is installed at the top of the pressure drive motor 11. The oil pump 42 is installed on the outer wall of the oil storage tank 41. The distribution oil pipe 43 is installed inside the pressure drive motor 11. The oil nozzle 44 is installed on the distribution oil pipe 43. The bottom end of the oil nozzle 44 is close to the rubber wheel 12. One end of the oil pipe 45 is installed on the oil pump 42, and the other end of the oil pipe 45 is installed on the distribution oil pipe 43.

[0034] The oil quantity detection mechanism 05 includes a sliding sleeve 51, a buoyancy sliding plate 52, a push rod 53, a limit plate 54, a bracket 55, and a proximity switch 56. The sliding sleeve 51 is installed inside the pressure drive motor 11. The sliding sleeve 51 is internally connected to the oil storage tank 41. The buoyancy sliding plate 52 is slidably installed inside the sliding sleeve 51 by buoyancy. The push rod 53 is installed on the buoyancy sliding plate 52. The limit plate 54 is installed at the top end of the push rod 53. The proximity switch 56 is installed at the top of the oil storage tank 41 through the bracket 55. A buzzer is provided on the outer wall of the oil storage tank 41.

[0035] The speed control mechanism 06 includes an adjustment housing 61, a fixed oil passing plate 62, a rotating oil passing plate 63, a bevel gear ring 64, a bevel gear 65, and an adjustment motor 66. The adjustment housing 61 is installed on the oil pipe 45. The fixed oil passing plate 62 is installed on the inner wall of the adjustment housing 61. The rotating oil passing plate 63 is rotatably installed on the inner wall of the adjustment housing 61. Both the fixed oil passing plate 62 and the rotating oil passing plate 63 are provided with material passing ports. The bevel gear ring 64 is installed on the rotating oil passing plate 63. The bevel gear 65 is rotatably installed inside the adjustment housing 61 through a rotating shaft. The bevel gear 65 meshes with the bevel gear ring 64. The adjustment motor 66 is installed on the outer wall of the adjustment housing 61. The output end of the adjustment motor 66 is connected to the rotating shaft of the bevel gear 65.

[0036] First, add anti-sticking oil into the storage oil tank 41. Open the oil pump 42 to add the anti-sticking oil into the distribution oil pipe 43 through the oil pipe 45, and then spray it on the rubber wheel 12 through the nozzle 44, thereby reducing the adhesion between the rubber wheel 12 and impurities and stones. As the anti-sticking oil is used, the pressure level of the anti-sticking oil in the storage oil tank 41 decreases. Then, due to buoyancy, the buoyancy sliding plate 52 slides downward in the sliding sleeve 51, and then drives the limit plate 54 to descend through the push rod 53. When the limit plate 54 and the proximity switch 56 are on the same horizontal plane, the proximity switch 56 sends an electrical signal to control the buzzer to alarm, reminding the operator to come and replenish. By opening the adjustment motor 66 to drive the bevel gear 65 to rotate, and then driving the distribution oil pipe 43 to rotate through the meshing relationship, the flow rate of the anti-sticking oil is adjusted by the overlapping size of the material passing port of the distribution oil pipe 43 and the oil pump 42, improving the practicability.

[0037] As Figures 1 to 7 shown, a rubber wheel roller of the present utility model, when working, drives the rubber wheel 12 to rotate by opening the pressure driving machine 11, and flattens the road surface by the rotation of the rubber wheel 12. When the rubber wheel 12 rotates to flatten the road surface, the arc-shaped scraper 23 scrapes the impurities and stones adhered to the rubber wheel 12, so that the impurities and stones enter the storage box 22. By opening the first motor 34 to drive the rotating shaft 31 to rotate, and then driving the auger blade 32 to rotate to discharge the impurities and stones in the storage box 22 from the discharge port 33, improving the practicability and convenience. First, add anti-sticking oil into the storage oil tank 41. Open the oil pump 42 to add the anti-sticking oil into the distribution oil pipe 43 through the oil pipe 45, and then spray it on the rubber wheel 12 through the nozzle 44, thereby reducing the adhesion between the rubber wheel 12 and impurities and stones. As the anti-sticking oil is used, the pressure level of the anti-sticking oil in the storage oil tank 41 decreases. Then, due to buoyancy, the buoyancy sliding plate 52 slides downward in the sliding sleeve 51, and then drives the limit plate 54 to descend through the push rod 53. When the limit plate 54 and the proximity switch 56 are on the same horizontal plane, the proximity switch 56 sends an electrical signal to control the buzzer to alarm, reminding the operator to come and replenish. By opening the adjustment motor 66 to drive the bevel gear 65 to rotate, and then driving the distribution oil pipe 43 to rotate through the meshing relationship, the flow rate of the anti-sticking oil is adjusted by the overlapping size of the material passing port of the distribution oil pipe 43 and the oil pump 42, improving the practicability.

[0038] The pressure driving machine 11, the first motor 34, the proximity switch 56 and the adjustment motor 66 of the present utility model are purchased on the market. Those skilled in the industry only need to install and operate according to the attached operation manuals, without the need for creative labor from those skilled in the art.

[0039] The main functions achieved by the utility model are as follows: during the working process of the rubber-tyred roller, it is convenient to clean the impurities and stones on the rubber tyre 12, improving convenience, and it is also convenient to adjust the flow rate of the sprayed oil, and it is convenient to remind the operator to timely replenish the anti-sticking oil.

[0040] The above are only the preferred embodiments of the utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the utility model.

Claims

1. A rubber-tyred roller, comprising a road rolling mechanism (01); characterized in that, It also includes a scraping mechanism (02), a cleaning mechanism (03), an oil spraying mechanism (04), an oil quantity detection mechanism (05) and a speed control mechanism (06). The scraping mechanism (02) is installed on the road rolling mechanism (01), the cleaning mechanism (03) is installed on the scraping mechanism (02), the oil spraying mechanism (04) is installed on the road rolling mechanism (01), the oil quantity detection mechanism (05) is installed on the oil spraying mechanism (04), and the speed control mechanism (06) is installed on the oil spraying mechanism (04). The road rolling mechanism (01) is convenient for flattening the road surface. The scraping mechanism (02) cleans the impurities and stones on the road rolling mechanism (01). The cleaning mechanism (03) is convenient for discharging the impurities and stones cleaned by the scraping mechanism (02). The oil spraying mechanism (04) oils the road rolling mechanism (01). The oil quantity detection mechanism (05) detects the oil quantity in the oil spraying mechanism (04). The speed control mechanism (06) is convenient for adjusting the oil spraying rate.

2. The pneumatic-tyred roller according to claim 1, characterized in that, The road rolling mechanism (01) includes a pressure drive motor (11) and a rubber wheel (12). The rubber wheel (12) is rotatably installed on the pressure drive motor (11).

3. The pneumatic-tyred roller according to claim 2, characterized in that, The scraping mechanism (02) includes a mounting frame (21), a storage box (22) and an arc-shaped scraping plate (23). The storage box (22) is installed on the pressure drive motor (11) through the mounting frame (21). The arc-shaped scraping plate (23) is installed on the mounting frame (21).

4. The pneumatic-tyred roller according to claim 3, wherein, The cleaning mechanism (03) includes a rotating shaft (31), a screw blade (32), a discharge port (33) and a first motor (34). The rotating shaft (31) is rotatably installed in the storage box (22). The screw blade (32) is installed on the rotating shaft (31). The two sides of the screw blade (32) are in opposite directions. The discharge port (33) is installed at the lower end of the storage box (22). The first motor (34) is installed on the side wall of the storage box (22). The output end of the first motor (34) is connected to the rotating shaft (31).

5. The pneumatic-tyred roller according to claim 2, wherein The oil spraying mechanism (04) includes an oil storage tank (41), an oil pump (42), a distribution oil pipe (43), an oil nozzle (44) and an oil pipe (45). The oil storage tank (41) is installed on the top of the pressure drive motor (11). The oil pump (42) is installed on the outer wall of the oil storage tank (41). The distribution oil pipe (43) is installed in the pressure drive motor (11). The oil nozzle (44) is installed on the distribution oil pipe (43). The bottom end of the oil nozzle (44) is close to the rubber wheel (12). One end of the oil pipe (45) is installed on the oil pump (42), and the other end of the oil pipe (45) is installed on the distribution oil pipe (43).

6. The pneumatic-tyred roller according to claim 5, wherein The oil quantity detection mechanism (05) includes a sliding sleeve (51), a buoyancy sliding plate (52), a push rod (53), a limit plate (54), a bracket (55) and a proximity switch (56). The sliding sleeve (51) is installed inside the pressure drive machine (11), and the sliding sleeve (51) is internally communicated with the inside of the oil storage tank (41). The buoyancy sliding plate (52) is slidably installed inside the sliding sleeve (51) by buoyancy. The push rod (53) is installed on the buoyancy sliding plate (52). The limit plate (54) is installed at the top end of the push rod (53). The proximity switch (56) is installed at the top end of the oil storage tank (41) through the bracket (55). A buzzer is arranged on the outer wall of the oil storage tank (41).

7. The pneumatic-tyred roller according to claim 5, wherein, The speed control mechanism (06) includes an adjustment housing (61), a fixed oil passing plate (62), a rotating oil passing plate (63), a bevel gear ring (64), a bevel gear (65) and an adjustment motor (66). The adjustment housing (61) is installed on the oil pipe (45). The fixed oil passing plate (62) is installed on the inner wall of the adjustment housing (61). The rotating oil passing plate (63) is rotatably installed on the inner wall of the adjustment housing (61). Material passing ports are arranged on both the fixed oil passing plate (62) and the rotating oil passing plate (63). The bevel gear ring (64) is installed on the rotating oil passing plate (63). The bevel gear (65) is rotatably installed inside the adjustment housing (61) through a rotating shaft. The bevel gear (65) meshes with the bevel gear ring (64). The adjustment motor (66) is installed on the outer wall of the adjustment housing (61), and the output end of the adjustment motor (66) is connected to the rotating shaft of the bevel gear (65).

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