Speed reducer for deep well

Abstract

The invention relates to the technical field of speed reducers, and discloses a speed reducer for a deep well, the speed reducer comprises a mounting plate and an adjusting plate arranged above the top of the mounting plate, an adjusting assembly is jointly mounted on the two sides of the top of the mounting plate, and a threaded pipe, a screw rod, a worm gear A, a worm A and a rotary knob are matched with one another to adjust the adjusting assembly. The heights of the speed reducer shell A and the speed reducer shell B can be adjusted according to requirements during mounting, so that connection between the transmission shaft and driving equipment is facilitated, rapid expansion of connection work is facilitated, and the use effect is good; through mutual cooperation of a filter screen plate, a scraping plate, a guide plate, a guide rod, a threaded sleeve, a threaded rod, a driven gear, a driving gear and a servo motor, sprayed and dripped lubricating oil can be filtered and cleaned, impurities in the lubricating oil are prevented from blocking the filter screen plate, impurities can be cleaned through disassembly of a sealing plate, and the service life of the lubricating oil is prolonged. The operation is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of reducers, in particular to a reducer for deep wells. Background Art

[0002] The reducer matches the speed and transmits torque between the prime mover and the working machine or actuator. It is a relatively precise machine. Its purpose is to reduce the speed and increase the torque. It has many types and models, and different types have different uses.

[0003] When using the existing deep well reducer, it is necessary to align the reducer with the mounting hole. However, there is a lack of components for adjusting the height of the reducer, which requires workers to replace mounting bases of different heights for connection operations during installation, reducing the effectiveness of the device. In addition, the reducer will rub during long-term use. If it is not handled, the service life of the reducer will be reduced.

[0004] Therefore, we proposed a reducer for deep wells in order to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a reducer for deep wells to solve the problems raised by the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a reducer for deep wells, comprising a mounting plate and an adjustment plate arranged above the top of the mounting plate, adjustment components are installed on both sides of the top of the mounting plate, and a reducer housing A is fixedly installed in the middle of the top of the adjustment plate, a filter component is installed below the inner cavity of the reducer housing A, and a reducer housing B is detachably fixedly installed on the top of the reducer housing A, an inspection port is opened in the middle of the top of the reducer housing B, a sealing cover is detachably installed in the middle of the top of the reducer housing B, and an oil pump is fixedly installed below the rear side of the reducer housing A, the input end of the oil pump is fixedly extended through the inner cavity of the reducer housing A, the output end of the oil pump is fixedly installed with a connecting pipe A, the front end of the connecting pipe A is fixedly installed with a hose, and the front end of the hose is fixedly installed with a connecting pipe B, and the lower end of the connecting pipe B is fixedly extended through the inner cavity of the reducer housing B;

[0007] The adjusting assembly includes threaded tubes movably mounted on both sides of the top of the mounting plate and screws threadedly mounted in the inner cavities of the threaded tubes, the upper ends of the screws extend to the outside of the threaded tubes, and the upper ends of the screws are fixedly mounted on the adjusting plates, worm wheels A are fixedly sleeved on the output shafts of the threaded tubes, worm A is meshed with the front sides of the worm wheels A, and side plates are fixedly mounted on both sides of the top of the mounting plate, one end of the worm A is movably mounted on the side plate on one side, and the other end of the worm A movably extends through the outside of the side plate on the other side, and a knob is fixedly mounted on the other end of the worm A.

[0008] Preferably, a worm B is movably installed through the upper part of one side of the reducer housing A, and the output end of the worm B is meshed with a worm wheel B, which is located in the inner cavity of the reducer housing A. A transmission rod is fixedly installed through the upper middle part of the worm wheel B, and the front and rear ends of the transmission rod are movably installed on the inner wall of the inner cavity of the reducer housing A respectively. The front and rear ends of the transmission rod output shaft are respectively fixedly sleeved with transmission gears, and one side of the transmission gear is respectively meshed with a rotating gear, and a transmission shaft is commonly fixedly installed through the upper middle part of the rotating gear, and the front end of the transmission shaft movably extends through to the outside of the reducer housing A.

[0009] Preferably, a plurality of mounting holes are provided at equal intervals on the front and rear sides of the top of the mounting plate, and limited telescopic rods are fixedly mounted at the four corners of the top of the mounting plate, and the upper ends of the limited telescopic rods are fixedly mounted on the adjustment plates.

[0010] Preferably, a dust screen is fixedly installed through the upper part of the other side of the reducer housing A, and a cleaning brush is attached to the middle part of the outer side of the dust screen, a connecting rod is fixedly installed on the rear side of the bottom of the cleaning brush, and the lower end of the connecting rod is fixedly installed on the mounting plate, a cleaning port is opened at the lower part of the other side of the reducer housing A, and a sealing plate is inserted into the inner cavity of the cleaning port, connecting plates are fixedly installed on the front and rear sides of the upper outer side of the sealing plate, respectively, T-shaped bolts are threadedly installed on the connecting plates, and the output ends of the T-shaped bolts are respectively threadedly inserted on the outer wall of one side of the reducer housing A.

[0011] Preferably, the filter assembly includes a filter screen plate fixedly mounted below the inner cavity of the reducer housing A and a scraper attached to one side of the top of the filter screen plate, a threaded sleeve is fixedly mounted on the front side of the top of the scraper plate, a threaded rod is installed through the thread on the threaded sleeve, and one end of the threaded rod is movably mounted on the inner wall of the inner cavity of the reducer housing A, the other end of the threaded rod is movably extended through and extends to the outside of the reducer housing A, and a driven gear is fixedly sleeved on the output end of the threaded rod, a driving gear is meshed on the top of the driven gear, a support plate is fixedly mounted on the front side below the other side of the reducer housing A, a servo motor is fixedly mounted on the bottom of the support plate, and the driving gear is fixedly sleeved on the output shaft of the servo motor.

[0012] Preferably, a guide plate is fixedly installed on the rear side of the top of the scraper, and a guide rod is slidably installed on the guide plate, and both ends of the guide rod are fixedly installed on the inner wall of the inner cavity of the reducer housing A respectively.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. Through the mutual cooperation among the threaded tube, the screw, the worm wheel A, the worm A and the knob, the height of the reducer housing A and the reducer housing B can be adjusted according to the needs of installation, which is beneficial to the connection between the transmission shaft and the driving equipment, and is beneficial to the rapid development of the connection work, and the use effect is good.

[0015] 2. Through the mutual cooperation among the filter plate, scraper, guide plate, guide rod, threaded sleeve, threaded rod, driven gear, driving gear and servo motor, the sprayed and dripping lubricating oil can be filtered and cleaned to prevent impurities in the lubricating oil from clogging the filter plate. By disassembling the sealing plate, the impurities can be cleaned, and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an overall stereogram of the present invention;

[0017] Figure 2 A bottom-up stereogram of the present invention;

[0018] Figure 3 It is a partial bottom-up sectional stereoscopic view of the present invention;

[0019] Figure 4 It is a partial bottom-up sectional unfolded stereoscopic view of the present invention;

[0020] Figure 5 For the present invention Figure 2 Enlarged view of point A in the middle;

[0021] Figure 6 It is a partial bottom-up unfolded stereogram of the present invention;

[0022] Figure 7 It is a partial cross-sectional perspective view of the present invention;

[0023] Figure 8 It is a partially unfolded stereoscopic view of the reducer housing A of the present invention;

[0024] Fig. 9 It is a partial structural stereogram of the filter screen plate of the present invention.

[0025] In the figure: 1. mounting plate; 11. mounting hole; 12. position limiting telescopic rod; 2. adjusting plate; 3. adjusting assembly; 31. threaded tube; 32. screw; 33. worm gear A; 34. worm gear A; 35. knob; 4. reducer housing A; 41. dust screen; 42. cleaning brush; 43. connecting rod; 44. sealing plate; 45. connecting plate; 46. T-bolt; 5. filter assembly; 51. filter screen; 52. scraper; 521. guide plate; 522. guide rod; 53. threaded sleeve; 54. threaded rod; 55. driven gear; 56. driving gear; 57. servo motor; 6. reducer housing B; 7. sealing cover; 8. oil pump; 9. hose; 10. worm gear B; 20. worm gear B; 30. transmission gear; 40. rotating gear; 50. transmission shaft. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Example 1: Please refer to Figure 1-9 A reducer for deep wells, comprising a mounting plate 1 and an adjusting plate 2 arranged above the top of the mounting plate 1, an adjusting assembly 3 is installed on both sides of the top of the mounting plate 1, and a reducer housing A4 is fixedly installed in the middle of the top of the adjusting plate 2, a filter assembly 5 is installed below the inner cavity of the reducer housing A4, and a reducer housing B6 is detachably fixedly installed on the top of the reducer housing A4, an inspection port is opened in the middle of the top of the reducer housing B6, a sealing cover 7 is detachably installed in the middle of the top of the reducer housing B6, and the rear side of the reducer housing A4 is fixedly installed with a reducer housing B6, and a filter assembly 5 is installed below the inner cavity of the reducer housing A4, and a filter assembly 5 is installed below the inner cavity of the reducer housing A4, and a reducer housing B6 is detachably fixedly installed on the top of the reducer housing A4, and a maintenance port is opened in the middle of the top of the reducer housing B6, and a sealing cover 7 is detachably installed in the middle of the top of the reducer housing B6, and the filter assembly 5 is installed below the inner cavity of the reducer housing A4 ... An oil pump 8 is fixedly installed at the bottom, and the input end of the oil pump 8 is fixedly extended through the inner cavity of the reducer housing A4, and a connecting pipe A is fixedly installed at the output end of the oil pump 8. A hose 9 is fixedly installed at the front end of the connecting pipe A, and a connecting pipe B is fixedly installed at the front end of the hose 9. The lower end of the connecting pipe B is fixedly extended through the inner cavity of the reducer housing B6. The height of the reducer housing A4 and the reducer housing B6 can be adjusted by setting the adjustment component 3, and the filter component 5 can filter and clean the sprayed and dripped lubricating oil.

[0028] The adjusting assembly 3 includes threaded tubes 31 movably mounted on both sides of the top of the mounting plate 1 and screws 32 threadedly mounted in the inner cavity of the threaded tubes 31, the upper ends of the screws 32 extend to the outside of the threaded tubes 31, and the upper ends of the screws 32 are fixedly mounted on the adjusting plate 2, the output shafts of the threaded tubes 31 are fixedly sleeved with worm wheels A33, the front sides of the worm wheels A33 are commonly meshed with worm A34, and side panels are fixedly mounted on both sides of the top of the mounting plate 1, one end of the worm A34 is movably mounted on the side panel of one side, the other end of the worm A34 is movably extended through the outside of the side panel of the other side, and the other end of the worm A34 is fixedly mounted with a knob 35, which can adjust the height of the reducer housing A4 and the reducer housing B6, which is conducive to the installation work.

[0029] A worm B10 is movably installed through the upper part of one side of the reducer housing A4, and the output end of the worm B10 is meshed with a worm wheel B20, which is located in the inner cavity of the reducer housing A4. A transmission rod is fixedly installed through the upper middle part of the worm wheel B20, and the front and rear ends of the transmission rod are movably installed on the inner wall of the inner cavity of the reducer housing A4, and the front and rear ends of the transmission rod are respectively fixedly sleeved with a transmission gear 30, and one side of the transmission gear 30 is respectively meshed with a rotating gear 40, and a transmission shaft 50 is fixedly installed through the upper middle part of the rotating gear 40, and the front end of the transmission shaft 50 movably extends through the outer side of the reducer housing A4 to play a role in deceleration.

[0030] A plurality of mounting holes 11 are provided at equal intervals on the front and rear sides of the top of the mounting plate 1, and limited telescopic rods 12 are fixedly installed at the four corners of the top of the mounting plate 1, and the upper ends of the limited telescopic rods 12 are fixedly installed on the adjustment plate 2, respectively, to facilitate installation and guide the limit.

[0031] A dust screen 41 is fixedly installed through the upper part of the other side of the reducer housing A4, and a cleaning brush 42 is attached to the middle part of the outer side of the dust screen 41, a connecting rod 43 is fixedly installed on the rear side of the bottom of the cleaning brush 42, and the lower end of the connecting rod 43 is fixedly installed on the mounting plate 1, a cleaning port is opened at the lower part of the other side of the reducer housing A4, and a sealing plate 44 is inserted into the inner cavity of the cleaning port, and connecting plates 45 are fixedly installed on the front and rear sides of the upper outer side of the sealing plate 44, respectively, and T-shaped bolts 46 are respectively threadedly installed on the connecting plates 45, and the output ends of the T-shaped bolts 46 are respectively threadedly inserted into the outer wall of one side of the reducer housing A4, which is beneficial to drive the cleaning brush 42 to clean the dust on the dust screen 41 when adjusting the height of the reducer housing A4 and the reducer housing B6, thereby improving the ventilation and heat dissipation effect, and also facilitates the disassembly of the sealing plate 44, thereby cleaning the impurities at the cleaning port.

[0032] In this embodiment, when in use, the device is placed at the location to be installed, and then the height is adjusted as needed. The knob 35 is turned to drive the worm A34 to rotate. When the worm A34 rotates, it drives the worm wheels A33 on both sides to rotate. When the worm wheels A33 rotate, it drives the threaded tube 31 to rotate. When the threaded tube 31 rotates, it drives the adjustment plate 2 up and down through the screw 32, so that the installation height can be adjusted. After the adjustment is completed, the knob 35 can be stopped, so that the worm B10 can be aligned with the external driving device, which is conducive to the rapid development of the installation work, and then the installation work can be carried out. The mounting hole 11 is used to fix the mounting plate 1, and the adjustment plate 2 will drive the dust screen 41 to slide on the cleaning brush 42 when moving up and down, so as to clean the dust attached to its surface. The worm B10, the worm wheel B20, the transmission gear 30 and the rotating gear 40 can play a deceleration role. When rotating, the oil pump 8 can be operated to reduce friction. The movement of the oil pump 8 will suck the lubricating oil through the connecting pipe A, the hose 9 and the connecting pipe B to spray and lubricate the deceleration components. In addition, the friction will produce metal debris, causing the metal debris to be mixed in the lubricating oil.

[0033] Embodiment 2: This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1 , Figure 4-6 and Figure 8-9 The filter assembly 5 includes a filter screen plate 51 fixedly mounted below the inner cavity of the reducer housing A4 and a scraper plate 52 attached to one side of the top of the filter screen plate 51, a threaded sleeve 53 is fixedly mounted on the front side of the top of the scraper plate 52, a threaded rod 54 is threadedly installed on the threaded sleeve 53, and one end of the threaded rod 54 is movably mounted on the inner wall of the inner cavity of the reducer housing A4, and the other end of the threaded rod 54 is movably extended to the outside of the reducer housing A4, and a driven gear 55 is fixedly sleeved on the output end of the threaded rod 54, and a driving gear 56 is meshed on the top of the driven gear 55, a support plate is fixedly mounted on the front side below the other side of the reducer housing A4, a servo motor 57 is fixedly mounted on the bottom of the support plate, and the driving gear 56 is fixedly sleeved on the output shaft of the servo motor 57, so that impurities in the lubricating oil dripping after spraying can be filtered, and at the same time, the scraper plate 52 can be set to clean it to one side.

[0034] A guide plate 521 is fixedly installed on the rear side of the top of the scraper 52, and a guide rod 522 is slidably installed on the guide plate 521. The two ends of the guide rod 522 are respectively fixedly installed on the inner wall of the inner cavity of the reducer housing A4, which plays a role in guiding the movement of the scraper 52 and enables it to slide stably.

[0035] In this embodiment, the filter plate 51 will filter the lubricating oil containing metal debris, so that impurities remain in the filter plate 51, and the filtered lubricating oil can be reused, which plays a role in energy saving. At the same time, the impurities on the filter plate 51 can be cleaned regularly. The operation of the servo motor 57 will drive the driving gear 56 to rotate. When the driving gear 56 rotates, it will rotate through the driven gear 55. When the driven gear 55 rotates, it will drive the threaded rod 54 to rotate. When the threaded rod 54 rotates, it will drive the scraper 52 to move through the threaded sleeve 53. When the scraper 52 moves, the impurities on the filter plate 51 will be pushed to the cleaning port. When the scraper 52 is pushed to the cleaning port, the operation of the scraper 52 can be stopped, and then the T-bolt 46 is rotated to make it away from the reducer housing A4 to release the clamping of the sealing plate 44. When the sealing plate 44 is taken out, the impurities can be cleaned. After the cleaning is completed, the reverse operation can restore the scraper 52 and the sealing plate 44 to their original positions.

[0036] Working principle: when in use, the device is placed at the location to be installed, and then the height is adjusted as needed, and the knob 35 is turned to drive the worm A34 to rotate. When the worm A34 rotates, it will drive the worm wheels A33 on both sides to rotate. When the worm wheel A33 rotates, it will drive the threaded tube 31 to rotate. When the threaded tube 31 rotates, it will drive the adjustment plate 2 to move up and down through the screw 32, so as to adjust the installation height. After the adjustment is completed, the knob 35 can be stopped, so that the worm B10 can be aligned with the external driving device, which is conducive to the rapid development of the installation work, and then the installation plate 1 is installed and fixed through the installation hole 11. When the adjustment plate 2 moves up and down, it will drive the dust screen 41 to slide on the cleaning brush 42, so as to clean the dust attached to its surface. The worm B10, the worm wheel B20, the transmission gear 30 and the rotating gear 40 can play a role of deceleration. When it rotates, in order to reduce friction, the oil pump 8 can be operated. The movement of the oil pump 8 will suck the lubricating oil through the connecting pipe A, the hose 9 and the connecting pipe B. The deceleration components are sprayed with lubrication. In addition, friction will produce metal debris, which will be mixed in the lubricating oil. The filter plate 51 will filter the lubricating oil containing metal debris, so that impurities will remain in the filter plate 51. The filtered lubricating oil can be reused, which plays a role in energy saving. At the same time, the impurities on the filter plate 51 can be cleaned regularly. The operation of the servo motor 57 will drive the driving gear 56 to rotate. When the driving gear 56 rotates, it will rotate through the driven gear 55. When the driven gear 55 rotates, it will drive the threaded rod 54 to rotate. When the threaded rod 54 rotates, it will drive the scraper 52 to move through the threaded sleeve 53. When the scraper 52 moves, it will push the impurities on the filter plate 51 to the cleaning port. When it is pushed to the cleaning port, the scraper 52 can stop running, and then the T-bolt 46 is rotated to make it away from the reducer housing A4 to release the clamping of the sealing plate 44. When the sealing plate 44 is taken out, the impurities can be cleaned. After the cleaning is completed, the reverse operation can restore the scraper 52 and the sealing plate 44 to their original positions.

[0037] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A speed reducer for deep wells, comprising a mounting plate (1) and an adjusting plate (2) arranged above the top of the mounting plate (1), characterized in that: An adjustment assembly (3) is commonly installed on both sides of the top of the mounting plate (1), and a reducer housing A (4) is fixedly installed in the middle of the top of the adjustment plate (2), a filter assembly (5) is installed below the inner cavity of the reducer housing A (4), and a reducer housing B (6) is detachably fixedly installed on the top of the reducer housing A (4), an inspection port is opened in the middle of the top of the reducer housing B (6), a sealing cover (7) is detachably installed in the middle of the top of the reducer housing B (6), and an oil pump (8) is fixedly installed below the rear side of the reducer housing A (4), the input end of the oil pump (8) is fixedly extended through the inner cavity of the reducer housing A (4), the output end of the oil pump (8) is fixedly installed with a connecting pipe A, the front end of the connecting pipe A is fixedly installed with a hose (9), and the front end of the hose (9) is fixedly installed with a connecting pipe B, and the lower end of the connecting pipe B is fixedly extended through the inner cavity of the reducer housing B (6); The adjustment assembly (3) comprises threaded tubes (31) movably mounted on both sides of the top of the mounting plate (1) and screws (32) threadedly mounted in the inner cavity of the threaded tubes (31), the upper ends of the screws (32) respectively extend to the outside of the threaded tubes (31), and the upper ends of the screws (32) are respectively fixedly mounted on the adjustment plate (2), a worm wheel A (33) is respectively fixedly sleeved on the output shaft of the threaded tube (31), a worm wheel A (34) is commonly meshed on the front side of the worm wheel A (33), and side plates are respectively fixedly mounted on both sides of the top of the mounting plate (1), one end of the worm wheel A (34) is movably mounted on the side plate of one side, the other end of the worm wheel A (34) movably penetrates and extends to the outside of the side plate of the other side, and the other end of the worm wheel A (34) is fixedly mounted with a knob (35).

2. A deep well reducer according to claim 1, characterized in that: A worm gear B (10) is movably installed through the upper part of one side of the reducer housing A (4), and the output end of the worm gear B (10) is meshed with a worm wheel B (20), the worm wheel B (20) is located in the inner cavity of the reducer housing A (4), a transmission rod is fixedly installed through the upper middle part of the worm wheel B (20), the front and rear ends of the transmission rod are movably installed on the inner wall of the inner cavity of the reducer housing A (4), the front and rear ends of the transmission rod output shaft are respectively fixedly sleeved with transmission gears (30), and one side of the transmission gear (30) is respectively meshed with a rotating gear (40), and a transmission shaft (50) is fixedly installed through the upper middle part of the rotating gear (40), and the front end of the transmission shaft (50) is movably installed through the outer side of the reducer housing A (4).

3. A deep well reducer according to claim 1, characterized in that: A plurality of mounting holes (11) are provided at equal intervals on the front and rear sides of the top of the mounting plate (1), and limited telescopic rods (12) are fixedly mounted at the four corners of the top of the mounting plate (1), and the upper ends of the limited telescopic rods (12) are fixedly mounted on the adjustment plate (2).

4. A deep well reducer according to claim 1, characterized in that: A dust screen (41) is fixedly installed through the upper part of the other side of the reducer housing A (4), and a cleaning brush (42) is attached to the middle part of the outer side of the dust screen (41). A connecting rod (43) is fixedly installed on the rear side of the bottom of the cleaning brush (42), and the lower end of the connecting rod (43) is fixedly installed on the mounting plate (1). A cleaning port is opened at the lower part of the other side of the reducer housing A (4), and a sealing plate (44) is inserted into the inner cavity of the cleaning port. Connecting plates (45) are fixedly installed on the front and rear sides of the upper outer side of the sealing plate (44), respectively. T-shaped bolts (46) are respectively threadedly installed on the connecting plates (45), and the output ends of the T-shaped bolts (46) are respectively threadedly inserted into the outer wall of one side of the reducer housing A (4).

5. A deep well reducer according to claim 1, characterized in that: The filter assembly (5) comprises a filter screen plate (51) fixedly mounted below the inner cavity of the reducer housing A (4) and a scraper plate (52) attached to one side of the top of the filter screen plate (51); a threaded sleeve (53) is fixedly mounted on the front side of the top of the scraper plate (52); a threaded rod (54) is threadedly mounted on the threaded sleeve (53); one end of the threaded rod (54) is movably mounted on the inner wall of the inner cavity of the reducer housing A (4); the other end of the threaded rod (54) is movably mounted to extend to the outside of the reducer housing A (4); a driven gear (55) is fixedly sleeved on the output end of the threaded rod (54); a driving gear (56) is meshed on the top of the driven gear (55); a support plate is fixedly mounted on the front side below the other side of the reducer housing A (4); a servo motor (57) is fixedly mounted on the bottom of the support plate; and the driving gear (56) is fixedly sleeved on the output shaft of the servo motor (57).

6. A deep well reducer according to claim 5, characterized in that: A guide plate (521) is fixedly mounted on the rear side of the top of the scraper (52), and a guide rod (522) is slidably mounted on the guide plate (521), and both ends of the guide rod (522) are respectively fixedly mounted on the inner wall of the inner cavity of the reducer housing A (4).

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