CN118654113B - A planetary gear reducer with self-tightening planetary carrier - Google Patents

Abstract

The invention relates to a planet carrier self-fastening type planetary gear reducer, which belongs to the technical field of gear transmission equipment and comprises an input shaft, wherein a first installation cover is connected with the input shaft in a sealing and rotating manner, an annular shell is detachably connected with the first installation cover, a first installation ring and a second installation ring are connected with the annular shell in a rotating manner, a gear is fixedly connected with the input shaft, an inner gear ring meshed with the rotating gear is arranged on the annular shell, symmetrically distributed rotating pipes are connected between the second installation ring and the first installation ring in a rotating manner, and a lubrication gear is fixedly connected with the rotating pipes. When the lubricating oil is used, the lubricating oil is discharged from the hole on the upper side of the lubricating gear, and is thrown to the upper part of the gear on the input shaft and the upper part of the inner gear ring on the annular shell through the lubricating gear, so that the lubricating oil slides downwards on the gear to completely lubricate the gear, and the phenomenon that some positions of the gear cannot contact the lubricating oil under the action of gravity is prevented, so that the uniformity of the lubricating oil on the gear is improved.

Description

A planetary gear reducer with self-tightening planetary carrier

Technical Field

The invention relates to the technical field of gear transmission equipment, and in particular to a planetary carrier self-tightening planetary gear reducer.

Background Art

A planetary gear reducer is a transmission device that reduces the rotation speed and increases the torque by cooperating with parts such as a sun gear, planetary gears, an inner ring gear and a planetary carrier. It has the characteristics of high transmission efficiency and high output torque and is widely used in lifting, excavation, transportation and other fields. In the process of using a planetary gear reducer, in order to reduce the friction of the gears during rotation, it is usually necessary to inject lubricating oil into the planetary gear reducer. However, existing reducers are generally injected with lubricating oil at one time, but during use, the lubricating oil in the reducer moves downward under the action of gravity, resulting in excessive lubricating oil in the lower part of the gear and insufficient lubrication on the upper side during rotation. This situation will result in waste of lubricating oil in the lower part of the gear and insufficient lubricating oil on the upper part of the gear, resulting in easy wear of the upper side of the gear, thereby affecting the performance and service life of the reducer. For this reason, a design of a planetary carrier self-tightening planetary gear reducer is proposed.

Summary of the invention

In order to overcome the disadvantage of uneven distribution of lubricating oil in gears, the present invention provides a planetary gear reducer with a self-tightening planetary carrier.

The technical solution of the present invention is: a planetary carrier self-tightening planetary gear reducer, comprising an input shaft, the input shaft is sealed and rotatably connected with a first mounting cover, the first mounting cover is detachably connected with an annular shell, the annular shell is detachably connected with a second mounting cover on a side away from the first mounting cover, the second mounting cover is sealed and rotatably connected with an output shaft, the annular shell is rotatably connected with a first mounting ring and a second mounting ring, the first mounting ring and the second mounting ring are limitedly matched, the second mounting ring is fixedly connected to the output shaft, the second mounting ring is installed with symmetrically distributed rotating gears, and the input shaft is fixedly connected with the symmetrically distributed rotating gears The annular shell is provided with an inner gear ring meshing with the rotating gear, a symmetrically distributed rotating tube is rotatably connected between the second mounting ring and the first mounting ring, the rotating tube is filled with lubricating oil, the rotating tube is fixedly connected with a lubricating gear meshing with the gear on the input shaft and the inner gear ring on the annular shell, the lubricating gear is provided with three groups of circumferentially distributed holes, and the three groups of holes are respectively close to the two ends and the middle of the lubricating gear, an oil discharge assembly for adjusting the oil discharge position is provided in the lubricating gear, and a self-tightening mechanism is provided on the second mounting ring, and the self-tightening mechanism is used to fix the first mounting ring and the second mounting ring.

Further description, the oil discharge assembly includes a first sealing ring, the first sealing ring is slidably and rotatably connected to the adjacent rotating tube, the rotating tube is slidably and rotatably connected to the second sealing ring, the rotating tube is provided with evenly distributed holes, the holes on the rotating tube are located in the adjacent lubricating gear, a cavity is provided between the lubricating gear and the adjacent rotating tube, the first sealing ring and the second sealing ring are both sealed, slidably and rotatably connected to the adjacent lubricating gear, the first sealing ring and the adjacent second sealing ring are both located in the cavity between the adjacent lubricating gear and the rotating tube, the first sealing ring and the adjacent second sealing ring are both fixedly connected to the first sealing block and the second sealing block on the corresponding sides of the first sealing ring and the adjacent second sealing ring, the first sealing block on the first sealing ring is sealed with the second sealing block on the adjacent second sealing ring, the second sealing block on the first sealing ring is sealed with the first sealing block on the adjacent second sealing ring, the second sealing ring is fixedly connected to a limiting rod, the limiting rod is slidably connected to the adjacent first sealing ring, and a first elastic member is provided between the first sealing ring and the adjacent second sealing ring.

It is further explained that the first sealing ring and the adjacent first sealing block are respectively sealed and matched with a group of adjacent circumferentially distributed holes on the adjacent lubrication gear.

It is further explained that there is a gap between the first mounting ring and the first mounting cover, and lubricating oil is injected into the gap between the first mounting ring and the first mounting cover, there is a gap between the second mounting ring and the second mounting cover, and lubricating oil is injected into the gap between the second mounting ring and the second mounting cover, and the two ends of the rotating tube pass through the first mounting ring and the second mounting ring respectively, and are connected with the gap between the first mounting ring and the first mounting cover and the gap between the second mounting ring and the second mounting cover respectively.

It is further explained that the rotating tube is fixedly connected with symmetrically distributed augers, and the augers are located in adjacent rotating tubes. The augers are used to guide dynamic lubricating oil into adjacent rotating tubes.

It is further explained that the second mounting ring and the first mounting ring are both provided with circumferentially distributed through holes, and the second mounting ring and the first mounting ring are both fixedly connected with circumferentially distributed guide members on the sides away from each other, and the guide members correspond to the positions of the adjacent rotating tubes.

It is further explained that the guide member is composed of an arc-shaped rod and two obliquely placed straight rods, and is used to guide the lubricating oil.

Further description, the self-tightening mechanism includes a circumferentially distributed threaded shell, the threaded shell is fixed to the second mounting ring, the threaded shell is threadedly connected with a screw, the screw passes through the first mounting ring and is squeezed and matched with the first mounting ring, the threaded shell is slidably and rotatably connected to a limit block, a second elastic member is arranged between the limit block and the adjacent threaded shell, the screw is limitedly matched with the adjacent limit block, and a fixing component for fixing the limit block is arranged in the threaded shell.

Further description, the fixing assembly includes a limiting ring, which is slidably connected in the adjacent threaded shell, the limiting ring is provided with symmetrically distributed grooves, the limiting block is provided with symmetrically distributed square blocks, the limiting ring is limitedly matched with the square blocks on the adjacent limiting blocks through the grooves thereon, the threaded shell is slidably connected with a limiting plate, a third elastic member is provided between the limiting plate and the adjacent threaded shell, the limiting plate is extruded and matched with the adjacent limiting ring, and a fourth elastic member is provided between the limiting ring and the threaded shell.

It is further explained that the limiting plate is provided with an inclined surface, and the limiting plate is extruded and matched with the adjacent limiting ring through the inclined surface thereon.

Compared with the prior art, the present invention has the following advantages: when in use, the present invention discharges the lubricating oil from the hole on the upper side of the lubricating gear, and throws the lubricating oil to the upper part of the gear on the input shaft and the upper part of the inner gear ring on the annular shell through the lubricating gear, so that the lubricating oil slides down on the gear to completely lubricate the gear, preventing some positions of the gear from being unable to contact the lubricating oil due to the action of gravity, thereby improving the uniformity of the lubricating oil on the gear.

The present invention circulates lubricating oil in the annular shell continuously, and during the circulation process, the lubricating oil moves the heat on the gear to the first mounting cover or the second mounting cover, and utilizes the first mounting cover or the second mounting cover to exchange heat with the outside to cool the gear and prevent the gear from overheating.

The present invention provides less lubricating oil to the gear during low-speed rotation, and provides more lubricating oil to the gear during high-speed rotation, so that the amount of lubricating oil matches the rotation speed of the gear, achieving a better lubrication effect.

The present invention fixes the first mounting ring and the second mounting ring together by a screw rod, and uses a limit block to fix the screw rod when the second mounting ring rotates to prevent the screw rod from sliding when the second mounting ring rotates. After the second mounting ring stops rotating, the screw rod is no longer restricted, which is convenient for staff to disassemble.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a three-dimensional structure of the present invention;

FIG2 is an exploded view of the three-dimensional structure of the first installation cover and the second installation cover of the present invention;

FIG3 is an exploded view of the three-dimensional structure of the input shaft and the first mounting ring of the present invention;

FIG4 is a schematic diagram of the three-dimensional structure of the internal parts of the annular shell of the present invention;

FIG5 is a schematic diagram of the three-dimensional structure of the oil discharge assembly of the present invention;

FIG6 is an exploded view of the three-dimensional structure of the rotating tube and the lubricating gear of the present invention;

FIG7 is a schematic diagram of the three-dimensional structure of parts such as a through hole and a guide member of the present invention;

FIG8 is a schematic diagram of the three-dimensional structure of the threaded shell and screw rod and other parts of the present invention;

FIG9 is an exploded view of the three-dimensional structure of the internal parts of the threaded shell of the present invention;

FIG. 10 is an exploded view of the three-dimensional structure of the threaded shell, the limit block, the second elastic member and other parts of the present invention.

The meaning of the reference numerals in the figure are: 1-input shaft, 11-first mounting cover, 12-annular shell, 13-second mounting cover, 14-output shaft, 15-first mounting ring, 16-second mounting ring, 17-rotating gear, 18-rotating tube, 19-lubricating gear, 2-first sealing ring, 201-second sealing ring, 21-first sealing block, 22-second sealing block, 23-limiting rod, 24-first elastic member, 3-auger, 4-through hole, 41-guide member, 5-threaded shell, 51-screw, 6-limiting block, 61-second elastic member, 62-limiting ring, 63-limiting plate, 64-third elastic member, 65-fourth elastic member.

DETAILED DESCRIPTION

Although the present invention can be described with respect to a specific application or industry, those skilled in the art will recognize the broader applicability of the present invention. Those skilled in the art will recognize that terms such as: upward, downward, etc. are used to describe the drawings, rather than to represent limitations on the scope of the present invention.

In the process of using a planetary gear reducer, it is usually necessary to add lubricating oil into the reducer to ensure the lubrication of its internal gear during rotation. Existing reducers are generally injected with lubricating oil at one time, but during use, the lubricating oil in the reducer moves downward under the action of gravity, resulting in excessive lubricating oil in the lower part of the gear and insufficient lubrication on the upper side during rotation. This situation will lead to waste of lubricating oil in the lower part of the gear and lack of lubricating oil on the upper side of the gear, causing the upper side of the gear to wear easily, thereby affecting the performance and service life of the reducer.

Embodiment 1: A planetary carrier self-tightening planetary gear reducer, as shown in Figures 1 to 6, includes an input shaft 1, the input shaft 1 is sealed and rotatably connected to a first mounting cover 11, the lower side of the first mounting cover 11 is detachably connected to an annular shell 12, the lower side of the annular shell 12 is detachably connected to a second mounting cover 13, the middle part of the second mounting cover 13 is sealed and rotatably connected to an output shaft 14, the inner part of the annular shell 12 is rotatably connected to a first mounting ring 15 and a second mounting ring 16, the first mounting ring 15 is located above the second mounting ring 16, two symmetrically distributed cylinders are fixedly connected to the second mounting ring 16, the first mounting ring 15 is provided with a hole that is limitedly matched with the cylinder on the second mounting ring 16, when in use, the cylinder on the second mounting ring 16 is placed into the hole corresponding to the first mounting ring 15, the lower side of the second mounting ring 16 is fixedly connected to the output shaft 14, and the second mounting ring 16 is connected to the output shaft 14 through the first mounting ring 15. Two symmetrically distributed cylinders are installed with symmetrically distributed rotating gears 17, and a gear meshing with the symmetrically distributed rotating gears 17 is fixedly connected to the lower side of the input shaft 1. An inner gear ring meshing with the rotating gear 17 is provided on the inner ring of the annular shell 12, and a symmetrically distributed rotating tube 18 is rotatably connected between the second mounting ring 16 and the first mounting ring 15. The two rotating tubes 18 and the two rotating gears 17 are staggered. Lubricating oil is filled in the rotating tube 18. The rotating tube 18 is fixedly connected with a lubricating gear 19 meshing with the gear on the input shaft 1 and the inner gear ring on the annular shell 12. The lubricating gear 19 is provided with three groups of circumferentially distributed holes, and the three groups of circumferentially distributed holes are respectively close to the two ends and the middle of the lubricating gear 19. An oil discharge assembly for adjusting the oil discharge position is provided in the lubricating gear 19, and a self-tightening mechanism is provided on the second mounting ring 16, and the self-tightening mechanism is used to fix the first mounting ring 15 and the second mounting ring 16.

5 and 6, the oil discharge assembly includes a first sealing ring 2, which is slidably and rotatably connected to an adjacent rotating tube 18, and is located in a cavity between an adjacent rotating tube 18 and an adjacent lubricating gear 19. The rotating tube 18 is slidably and rotatably connected to a second sealing ring 201, and the rotating tube 18 is provided with evenly distributed holes, and the evenly distributed holes on the rotating tube 18 are located in the adjacent lubricating gears 19, and a cavity is provided between the lubricating gears 19 and the adjacent rotating tube 18, and the second sealing ring 201 is also located in the cavity between the adjacent rotating tube 18 and the adjacent lubricating gear 19, and the first sealing ring 2 and the second sealing ring 201 are both sealed, slidably and rotatably connected to the adjacent lubricating gear 19, and the first sealing ring 2 and the adjacent second sealing ring 201 are both located in the cavity between the adjacent lubricating gear 19 and the rotating tube 18, and the first sealing ring 2 and the adjacent second sealing ring 201 are respectively connected to a group of adjacent peripheral portions of the adjacent lubricating gear 19. The holes distributed therein are sealed and matched. During use, there is always a group of holes in the lubrication gear 19 that are in a connected state. The first sealing ring 2 and the corresponding side of the adjacent second sealing ring 201 are fixedly connected with the first sealing block 21 and the second sealing block 22. The first sealing block 21 on the first sealing ring 2 is sealed and matched with the second sealing block 22 on the adjacent second sealing ring 201. The second sealing block 22 on the first sealing ring 2 is sealed and matched with the first sealing block 21 on the adjacent second sealing ring 201. The second sealing ring 201 is fixedly connected with two symmetrically distributed limiting rods 23. The two symmetrically distributed limiting rods 23 are both slidably connected with the adjacent first sealing ring 2. A first elastic member 24 is arranged between the first sealing ring 2 and the adjacent second sealing ring 201. The first elastic member 24 is a spring. When the second sealing ring 201 contacts the adjacent first sealing ring 2, the elastic force generated by the deformation of the first elastic member 24 is less than the gravity of the second sealing ring 201 or the first sealing ring 2.

As shown in Figure 2, there is a gap between the upper side of the first mounting ring 15 and the lower side of the first mounting cover 11, and lubricating oil is injected into the gap between the first mounting ring 15 and the first mounting cover 11, there is a gap between the lower side of the second mounting ring 16 and the upper side of the second mounting cover 13, and lubricating oil is injected into the gap between the second mounting ring 16 and the second mounting cover 13, the upper and lower ends of the rotating tube 18 pass through the first mounting ring 15 and the second mounting ring 16 respectively, and are connected with the gap between the first mounting ring 15 and the first mounting cover 11 and the gap between the second mounting ring 16 and the second mounting cover 13 respectively, the interior of the rotating tube 18 is fixedly connected with an auger 3 symmetrically distributed up and down, when in use, the rotating tube 18 drives the auger 3 to rotate, and the auger 3 guides the lubricating oil in the gap between the first mounting ring 15 and the first mounting cover 11 and the gap between the second mounting ring 16 and the second mounting cover 13 into the adjacent rotating tube 18.

3 and 7-9, the second mounting ring 16 and the first mounting ring 15 are both provided with circumferentially distributed through holes 4, and the through holes 4 are used to allow excess lubricating oil to return to the gap between the first mounting ring 15 and the first mounting cover 11 or the gap between the second mounting ring 16 and the second mounting cover 13 to prevent excessive lubricating oil at the bottom. The lower side of the second mounting ring 16 and the upper side of the first mounting ring 15 are both fixedly connected with two circumferentially distributed guide members 41, and the guide members 41 correspond to the positions of the adjacent rotating tubes 18. The guide members 41 are composed of an arc rod and two inclined straight rods, and are used to guide the lubricating oil.

In the process of using the device for deceleration, the staff first drives the input shaft 1 (seen from top to bottom) to rotate clockwise through the motor, and the input shaft 1 drives the two rotating gears 17 and the two lubricating gears 19 to rotate counterclockwise through the gears below it. The two rotating gears 17 and the two lubricating gears 19 rotate clockwise around the axis of the input shaft 1 under the guidance of the gear ring in the annular shell 12 (initially, the screw 51 is located in the threaded shell 5, and the second mounting ring 16 and the first mounting ring 15 are fixed by the screw 51). The two rotating gears 17 drive the second mounting ring 16 and the first mounting ring 15 to rotate clockwise through the cylinder on the second mounting ring 16, and the two lubricating gears 19 drive the second mounting ring 16 and the first mounting ring 15 to rotate clockwise through the two rotating tubes 18. The second mounting ring 16 drives the output shaft 14 to rotate clockwise. The rotation speed of the output shaft 14 is less than the rotation speed of the input shaft 1, thereby realizing the deceleration function.

Initially, the volume of the lubricating oil in the annular housing 12 (the lubricating oil between the first mounting ring 15 and the first mounting cover 11, the lubricating oil in the two rotating tubes 18, and the lubricating oil between the second mounting ring 16 and the second mounting cover 13) is equal to the volume of the space between the first mounting ring 15 and the first mounting cover 11 or the volume of the space between the second mounting ring 16 and the second mounting cover 13. When the input shaft 1 is used in the direction shown in FIG. 1, the lubricating oil is stored on the lower side of the second mounting ring 16. At this time, the second mounting ring 16 rotates clockwise to lubricate the gear 19 and the rotating gear 19. The movable tube 18 rotates counterclockwise at this time, and the second mounting ring 16 drives the two guide members 41 on its lower side to rotate clockwise. The guide members 41 gather the lubricating oil on the lower side of the second mounting ring 16 to the lower side of the rotating tube 18. Taking a rotating tube 18 as an example, the rotating tube 18 drives the auger 3 to rotate counterclockwise. During the rotation of the auger 3, the lubricating oil on the lower side of the rotating tube 18 moves toward the middle of the rotating tube 18. During the rotation of the rotating tube 18, the lubricating oil inside the rotating tube 18 is discharged outward, and the discharged lubricating oil enters the cavity between the rotating tube 18 and the lubrication gear 19.

After the lubricating oil enters the cavity between the rotating tube 18 and the lubricating gear 19, since the rotating tube 18 is placed vertically at this time, the second sealing ring 201 drives the first sealing block 21 and the second sealing block 22 thereon to fit with the second sealing block 22 and the first sealing block 21 at the lower side under the action of gravity, and the second sealing ring 201 compresses the first elastic member 24, and the limiting rod 23 enters the first sealing ring 2, and the first sealing ring 2 and the second sealing ring 201 seal a group of circumferentially distributed holes on the lower side of the lubricating gear 19 and a group of circumferentially distributed holes in the middle. The holes of the cloth are blocked, and the lubricating gear 19 discharges the lubricating oil outward through a group of circumferentially distributed holes on the upper side during rotation. The lubricating gear 19 throws the lubricating oil to the upper part of the gear on the input shaft 1 and the upper part of the inner gear ring on the annular shell 12 during rotation. In this way, the amount of lubricating oil added can be better controlled. During the rotation of the lubricating gear 19, the lubricating oil on the upper part of the gear on the input shaft 1 gradually flows downward and is evenly coated on the gear of the input shaft 1, preventing some positions of the gear from being unable to contact the lubricating oil due to the action of gravity.

When the lubricating oil flows downward from the gear on the lower side of the input shaft 1 and the inner gear ring of the annular shell 12 to contact the second mounting ring 16, the lubricating oil flows back to the lower space of the second mounting ring 16 through the through hole 4 on the second mounting ring 16, forming a circulation. During the circulation process, the heat on the gear is moved to between the second mounting cover 13 and the second mounting ring 16 by the lubricating oil, and the gear is cooled by heat exchange with the outside through the second mounting ring 16.

When the device is used upside down, the above process is repeated, and the lubricating oil still drips from top to bottom, so that the gear ring in the annular shell 12 is evenly in contact with the lubricating oil. When the device is placed horizontally for use, the first sealing ring 2 and the second sealing ring 201 no longer squeeze the first elastic member 24. The first elastic member 24 is released to separate the first sealing ring 2 and the second sealing ring 201. The first sealing ring 2 and the second sealing ring 201 block the holes on both sides of the lubricating gear 19, leaving only a group of holes in the middle of the lubricating gear 19. The lubricating oil is now discharged from the middle of the lubricating gear 19, thereby improving the uniformity of the lubricating oil dripping on the gear.

During low-speed rotation, less lubricating oil is needed on the gears. Too much lubricating oil will increase the resistance of the gears. At this time, the rotation speed of the auger 3 and the lubricating gear 19 is slow, and less lubricating oil is provided to the gears. During high-speed rotation, in order to prevent the oil film on the gears from rupturing, more lubricating oil is needed on the gears. At this time, the rotation speed of the auger 3 and the lubricating gear 19 is fast, and more lubricating oil is provided to the gears, so that the amount of lubricating oil matches the rotation speed of the gears.

Embodiment 2: On the basis of Embodiment 1, as shown in Figures 9 and 10, the self-tightening mechanism includes four threaded shells 5 distributed circumferentially, the threaded shells 5 are fixedly connected to the second mounting ring 16, the threaded shells 5 are threadedly connected with a screw 51, the screw 51 passes through the first mounting ring 15 and is squeezed and matched with the first mounting ring 15, the threaded shells 5 are slidably and rotatably connected to the limit block 6, a second elastic member 61 is arranged between the limit block 6 and the adjacent threaded shell 5, the second elastic member 61 is a spring, the screw 51 is limitedly matched with the adjacent limit block 6, a square groove is opened on the lower side of the screw 51, a square block is arranged on the limit block 6, when in use, the square block in the limit block 6 enters into the square groove on the lower side of the adjacent screw 51, and a fixing component for fixing the limit block 6 is arranged in the threaded shell 5.

9 and 10, the fixing assembly includes a limit ring 62, which is slidably connected to the adjacent threaded shell 5, and the limit ring 62 is located below the adjacent limit block 6. The limit ring 62 is provided with two symmetrically distributed grooves, and the groove of the limit ring 62 is provided with a chamfer. The outer periphery of the limit block 6 is provided with two symmetrically distributed square blocks. The limit ring 62 cooperates with the square block on the adjacent limit block 6 through the groove thereon. When the limit ring 62 moves upward, the groove on the limit ring 62 contacts the direction block at the edge of the adjacent limit block 6, and the limit block 6 is limited. The lower side of the threaded shell 5 is slidably connected to a limiting plate 63, and a third elastic member 64 is provided between the limiting plate 63 and the adjacent threaded shell 5. The third elastic member 64 is an elastic pull rope, which is used to drive the adjacent limiting plate 63 to reset. An inclined surface is provided on the limiting plate 63, and the limiting plate 63 is squeezed and matched with the adjacent limiting ring 62 through the inclined surface thereon. Two symmetrically distributed fourth elastic members 65 are provided between the limiting ring 62 and the threaded shell 5. The fourth elastic member 65 is an elastic pull rope, which is used to reset the limiting ring 62 and keep the limiting ring 62 at the lower side of the threaded shell 5 when not in use.

Before using the device, the screw 51 is first rotated into the threaded shell 5. During the rotation of the screw 51, the screw 51 drives the adjacent limit block 6 to rotate, and squeezes the adjacent second elastic member 61 through the limit block 6, so that the limit block 6 fits with the screw 51. Since the positions of the screw 51 are the same after tightening, when the screw 51 is tightened, the square block on the limit block 6 just corresponds to the groove on the adjacent limit ring 62. When the second mounting ring 16 starts to rotate, the second mounting ring 16 drives the limit plate 63 to rotate through the threaded shell 5, and the limit plate 63 moves outward under the action of centrifugal force. During the movement, the third elastic member 64 is stretched and the third elastic member 64 accumulates force. When the limit plate 63 moves outward, the inclined surface of the limit plate 63 squeezes the adjacent limit ring 62 upward, and the fourth elastic member 65 is stretched. The limit ring 62 gradually contacts the limit block 6. The square block on the limit block 6 enters the groove of the limit ring 62, and the rotation of the limit block 6 is limited by the limit ring 62, thereby limiting the screw 51 and fixing the screw 51 to prevent the screw 51 from sliding when the second mounting ring 16 rotates, thereby fixing the first mounting ring 15 and the second mounting ring 16.

After the second mounting ring 16 stops rotating, the limit plate 63 is no longer moved outward by the centrifugal force, and the limit plate 63 is reset under the action of the third elastic member 64, and the limit ring 62 is reset under the action of the fourth elastic member 65. At this time, the screw 51 can be disassembled to facilitate repair by the staff.

The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the spirit of the present invention.

Claims (9)

1. A planetary carrier self-tightening planetary gear reducer, comprising an input shaft (1), the input shaft (1) being sealingly rotatably connected to a first mounting cover (11), the first mounting cover (11) being detachably connected to an annular shell (12), the annular shell (12) being detachably connected to a second mounting cover (13) on a side away from the first mounting cover (11), the second mounting cover (13) being sealingly rotatably connected to an output shaft (14), the annular shell (12) being rotatably connected to a first mounting ring (15) and a second mounting ring (16), the first mounting ring (15) and the second mounting ring (16) being limitedly matched, the second mounting ring (16) being fixedly connected to the output shaft (14), the second mounting ring (16) being mounted with symmetrically distributed rotating gears (17), the input shaft (1) being fixedly connected to gears meshing with the symmetrically distributed rotating gears (17), gear, the annular shell (12) is provided with an inner gear ring meshing with the rotating gear (17), characterized in that: it also includes symmetrically distributed rotating tubes (18), the rotating tubes (18) are rotatably connected between the second mounting ring (16) and the first mounting ring (15), the rotating tubes (18) are filled with lubricating oil, the rotating tubes (18) are fixedly connected with a lubricating gear (19) meshing with the gear on the input shaft (1) and the inner gear ring on the annular shell (12), the lubricating gear (19) is provided with three groups of circumferentially distributed holes, and the three groups of holes are respectively close to the two ends and the middle of the lubricating gear (19), the lubricating gear (19) is provided with an oil discharge assembly for adjusting the oil discharge position, the second mounting ring (16) is provided with a self-tightening mechanism, the self-tightening mechanism is used to fix the first mounting ring (15) and the second mounting ring (16); The oil discharge assembly comprises a first sealing ring (2), the first sealing ring (2) being slidably and rotatably connected to the adjacent rotating tube (18), the rotating tube (18) being slidably and rotatably connected to the second sealing ring (201), the rotating tube (18) being provided with evenly distributed holes, the holes on the rotating tube (18) being located in the adjacent lubricating gear (19), a cavity being provided between the lubricating gear (19) and the adjacent rotating tube (18), the first sealing ring (2) and the second sealing ring (201) both being sealingly slidably and rotatably connected to the adjacent lubricating gear (19), the first sealing ring (2) and the adjacent second sealing ring (201) both being located in the cavity between the adjacent lubricating gear (19) and the rotating tube (18) The first sealing ring (2) and the adjacent second sealing ring (201) have a first sealing block (21) and a second sealing block (22) fixedly connected on their corresponding sides; the first sealing block (21) on the first sealing ring (2) is in sealing cooperation with the second sealing block (22) on the adjacent second sealing ring (201); the second sealing block (22) on the first sealing ring (2) is in sealing cooperation with the first sealing block (21) on the adjacent second sealing ring (201); the second sealing ring (201) is fixedly connected to a limiting rod (23); the limiting rod (23) is slidably connected to the adjacent first sealing ring (2); and a first elastic member (24) is provided between the first sealing ring (2) and the adjacent second sealing ring (201). 2. A planetary carrier self-tightening planetary gear reducer according to claim 1, characterized in that the first sealing ring (2) and the adjacent first sealing block (21) are respectively sealed with a group of adjacent circumferentially distributed holes on the adjacent lubrication gear (19). 3. A planetary carrier self-tightening planetary gear reducer according to claim 1, characterized in that: there is a gap between the first mounting ring (15) and the first mounting cover (11), and lubricating oil is injected into the gap between the first mounting ring (15) and the first mounting cover (11), there is a gap between the second mounting ring (16) and the second mounting cover (13), and lubricating oil is injected into the gap between the second mounting ring (16) and the second mounting cover (13), and both ends of the rotating tube (18) pass through the first mounting ring (15) and the second mounting ring (16), respectively, and are communicated with the gap between the first mounting ring (15) and the first mounting cover (11) and the gap between the second mounting ring (16) and the second mounting cover (13), respectively. 4. A planetary carrier self-tightening planetary gear reducer according to claim 3, characterized in that: the rotating tube (18) is fixedly connected with symmetrically distributed augers (3), the augers (3) are located in adjacent rotating tubes (18), and the augers (3) are used to guide dynamic lubricating oil into adjacent rotating tubes (18). 5. A planetary carrier self-tightening planetary gear reducer according to claim 4, characterized in that: the second mounting ring (16) and the first mounting ring (15) are both provided with circumferentially distributed through holes (4), and the second mounting ring (16) and the first mounting ring (15) are both fixedly connected with circumferentially distributed guide members (41) on the sides away from each other, and the guide members (41) correspond to the positions of the adjacent rotating tubes (18). 6. A planetary carrier self-tightening planetary gear reducer according to claim 5, characterized in that: the guide member (41) consists of an arc rod and two inclined straight rods, which are used to guide lubricating oil. 7. A planetary carrier self-tightening planetary gear reducer according to claim 1, characterized in that: the self-tightening mechanism comprises a circumferentially distributed threaded shell (5), the threaded shell (5) is fixed to the second mounting ring (16), the threaded shell (5) is threadedly connected with a screw (51), the screw (51) passes through the first mounting ring (15) and is pressed and matched with the first mounting ring (15), the threaded shell (5) is slidably and rotatably connected to a limit block (6), a second elastic member (61) is provided between the limit block (6) and an adjacent threaded shell (5), the screw (51) is limitedly matched with the adjacent limit block (6), and a fixing component for fixing the limit block (6) is provided in the threaded shell (5). 8. A planetary carrier self-tightening planetary gear reducer according to claim 7, characterized in that: the fixing component includes a limit ring (62), the limit ring (62) is slidably connected in the adjacent threaded shell (5), the limit ring (62) is provided with symmetrically distributed grooves, the limit block (6) is provided with symmetrically distributed square blocks, the limit ring (62) is limitedly matched with the square block on the adjacent limit block (6) through the groove thereon, the threaded shell (5) is slidably connected to the limit plate (63), a third elastic member (64) is provided between the limit plate (63) and the adjacent threaded shell (5), the limit plate (63) is extruded and matched with the adjacent limit ring (62), and a fourth elastic member (65) is provided between the limit ring (62) and the threaded shell (5). 9. A planetary carrier self-tightening planetary gear reducer according to claim 8, characterized in that: the limiting plate (63) is provided with an inclined surface, and the limiting plate (63) is pressed and matched with the adjacent limiting ring (62) through the inclined surface thereon.