Auxiliary equipment for assembling planet shaft of speed reducer and using method of auxiliary equipment

Abstract

The invention discloses auxiliary equipment for assembling planet shafts of speed reducers and a using method of the auxiliary equipment, relates to the technical field of auxiliary equipment, and aims to solve the problem that planet shafts are inconvenient to assemble when part of existing planet speed reducers are assembled. According to the technical scheme, the device is characterized in that the device comprises a supporting frame and a containing part fixedly connected with the supporting frame, the containing part is horizontally arranged, an annular containing cavity for containing a planet shaft and liquid nitrogen is formed in the middle of the containing part in the length direction, and the annular containing cavity close to the bottom side is filled with the liquid nitrogen; a feeding channel and a discharging channel are arranged on the containing part close to the top side, the central axes of the feeding channel and the discharging channel coincide with each other, the feeding channel and the discharging channel communicate with the annular containing cavity, and a driving structure used for driving the planet shafts to enter the annular containing cavity from the feeding channel and penetrate out of the containing part from the discharging channel is arranged on the containing part. Through the arrangement of the structure, the installation process of the planetary shaft of the planetary reducer becomes simpler, more convenient and safer.

Description

Technical Field

[0001] The present invention relates to the technical field of auxiliary equipment, and more specifically, it relates to an auxiliary equipment for assembling planetary shafts of a speed reducer and a using method thereof. Background Technique

[0002] A speed reducer is an independent component composed of gear transmission, worm transmission, and gear-worm transmission enclosed in a rigid housing. It is commonly used as a speed reduction transmission device between the prime mover and the working machine, playing the role of matching the rotational speed and transmitting torque between the prime mover and the working machine or the actuator, and is widely used in modern machinery.

[0003] The types and functions of speed reducers are usually diverse. One of them is the planetary speed reducer. During the manufacturing process of speed reducers, there are usually some inconveniences. When assembling some planetary speed reducers, due to the deviation of machining dimensions and machining accuracy, the planetary shaft may be stuck when installing the planetary shaft. In response to the above situation, some assemblers will directly use a copper rod to knock the stuck planetary shaft into the installation hole. If the assembly experience is insufficient, this method is likely to damage the bearing. At the same time, some assemblers will use liquid nitrogen to freeze and cool the stuck planetary shaft, and use the principle of cold shrinkage to temporarily reduce the size of the planetary shaft, so that the planetary shaft can be stably assembled. In this process, the planetary shaft to be installed is usually placed in a container and liquid nitrogen is poured into the container. This method not only has the problem of easy volatilization and waste of liquid nitrogen, but also the container may be overturned, and there is a risk of liquid nitrogen spilling. Therefore, a structure is set up to solve the problem that it is inconvenient to assemble the planetary shaft when assembling some existing planetary speed reducers.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Summary of the Invention

[0005] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide an auxiliary equipment for assembling planetary shafts of a speed reducer and a using method thereof.

[0006] The above technical purpose of the present invention is achieved through the following technical solutions: The auxiliary equipment for assembling planetary shafts of a speed reducer includes a support frame and a receiving member fixedly connected to the support frame. The receiving member is horizontally arranged, and a ring-shaped receiving cavity for placing the planetary shaft and liquid nitrogen is provided at the middle position in the length direction thereof. Liquid nitrogen is filled in the ring-shaped receiving cavity near the bottom side, and a feeding channel and a discharging channel with coincident central axes are provided on the receiving member near the top side. Both the feeding channel and the discharging channel are communicated with the ring-shaped receiving cavity, and a driving structure is provided on the receiving member for driving the planetary shaft to enter the ring-shaped receiving cavity from the feeding channel and pass through the receiving member from the discharging channel.

[0007] The present invention is further configured such that: the driving structure includes a front driving portion, a middle driving portion, and a rear driving portion arranged in sequence along the material delivery direction. The front driving portion is used to drive the material to enter the annular accommodating cavity along the feeding channel. The middle driving portion is used to drive the planetary shaft to slide along the annular accommodating cavity. The rear driving portion is used to drive the planetary shaft to pass through the accommodating member from the discharging channel.

[0008] The present invention is further configured such that: symmetrically arranged support plates for supporting the driving structure are fixedly connected to the accommodating member. A guiding rod is fixedly connected to one side of the support plate. A driving reciprocating lead screw is rotatably connected to the support plate on the side away from the guiding rod. A first driving motor for driving the driving reciprocating lead screw to rotate is fixedly connected to the support plate near the feeding channel.

[0009] The present invention is further configured such that: the front driving portion includes a first arc-shaped sliding member for being in transmission connection with the driving reciprocating lead screw and slidingly connected to the guiding rod. A first electromagnet facing the feeding channel is fixedly connected to the inner first arc-shaped sliding member. The first electromagnet is energized during the process of sliding towards the annular accommodating cavity and de-energized during the process of sliding away from the annular accommodating cavity.

[0010] The present invention is further configured such that: the rear driving portion includes a second arc-shaped sliding member for being in transmission connection with the driving reciprocating lead screw and slidingly connected to the guiding rod. A second electromagnet facing the discharging channel is fixedly connected to the inner second arc-shaped sliding member. The second electromagnet is energized during the process of sliding away from the annular accommodating cavity and is also energized during the process of sliding towards the annular accommodating cavity.

[0011] The present invention is further configured such that: a first adjusting plate is fixedly connected to the support plate near the discharging channel. An adjusting rod is slidably connected to the first adjusting plate. A second adjusting plate sleeved on the adjusting rod and having a clearance fit with the adjusting rod is fixedly connected to the second arc-shaped sliding member. A third adjusting plate is fixedly connected to the adjusting rod on the side near the second adjusting plate. A fourth adjusting plate is fixedly connected to the adjusting rod on the side away from the second adjusting plate. A first magnetic block that attracts each other is fixedly connected between the fourth adjusting plate and the first adjusting plate. A second magnetic block that attracts each other is fixedly connected between the third adjusting plate and the first adjusting plate. One end of the adjusting rod on the side near the second adjusting plate is fixedly connected to a fifth adjusting plate.

[0012] The present invention is further configured such that: the middle driving part includes a driving ring member sleeved on the accommodating member and facing the annular accommodating cavity, symmetrically arranged guiding rings are fixedly connected to the inner side of the driving ring member, an annular groove for the guiding rings to penetrate and slide is formed on the accommodating member, a third magnetic block facing the annular accommodating cavity is fixedly connected to the driving ring member, a driving gear ring is fixedly connected to the outer side of the driving ring member, a second driving motor is fixedly connected to the support frame, and a driving gear meshing with the driving gear ring is fixedly connected to the second driving motor.

[0013] The present invention is further configured such that: a feeding pipe communicating with the annular accommodating cavity is fixedly connected to the accommodating member, a feeding funnel is communicated with the top of the feeding pipe, and a plug for blocking the top opening of the feeding pipe is detachably connected to the top end of the feeding pipe.

[0014] The present invention is further configured as a usage method of the auxiliary equipment for assembling the planetary shaft of a speed reducer, which is used for the above-mentioned auxiliary equipment for assembling the planetary shaft of a speed reducer, and includes Step 1: Feed liquid nitrogen into the annular accommodating cavity through the feeding funnel and the feeding pipe, and close the opening of the feeding pipe through the plug. Step 2: Sequentially insert the planetary shafts into the feeding channel, start the first driving motor and the second driving motor, and use the front driving part to feed the planetary shafts into the annular accommodating cavity of the accommodating member through the feeding channel. Step 3: Use the middle driving part to drive the planetary shafts to sequentially immerse in and pass through the liquid nitrogen stored in the annular accommodating cavity. Step 4: Feed the planetary shafts into the feeding channel again, and drive the planetary shafts in the annular accommodating cavity to pass through the accommodating member from the discharging channel under the action of the driving structure for the user to take.

[0015] In summary, the present invention has the following beneficial effects: Under the action of the annular accommodating cavity, it is used to temporarily store liquid nitrogen, ensuring that the planetary shaft entering the annular accommodating cavity can be in stable contact with the liquid nitrogen, enabling the liquid nitrogen to stably perform cryogenic treatment on the planetary shaft, temporarily reducing the size of the planetary shaft, and ensuring that the subsequent process of installing the planetary shaft is more stable and convenient. The annular accommodating cavity near the bottom side is filled with liquid nitrogen, and the stable storage of liquid nitrogen is realized under the action of the annular accommodating cavity, reducing the situation of the container filled with liquid nitrogen tipping over and further reducing the risk of liquid nitrogen spilling. On the accommodating part near the top side, there are a feeding channel and a discharging channel with coincident central axes. The cross-sectional shapes of the feeding channel and the discharging channel in the width direction are both set as circular. The bottom ends of the discharging channel and the feeding channel are tangent to the inner bottom surface of the annular accommodating cavity. Both the discharging channel and the feeding channel are in communication with the annular accommodating cavity. The accommodating part is provided with a driving structure for driving the planetary shaft to enter the annular accommodating cavity from the feeding channel and pass through the accommodating part from the discharging channel. Under the action of the provided driving structure, the planetary shaft can be stably driven into the accommodating part and come into contact with the liquid nitrogen. Then, under the action of the driving structure, the cryogenically treated planetary shaft passes through the accommodating part and is available for the user to take. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural view of the present invention Figure 1 ; Figure 2 is a schematic structural view of the present invention Figure 2 ; Figure 3 is Figure 2 an enlarged view of part A in Figure 4 is Figure 2 an enlarged view of part B in Figure 5 is a sectional view of the present invention Figure 1 ; Figure 6 is Figure 5 an enlarged view of part C in Figure 7 is Figure 5 an enlarged view of part D in Figure 8 is a sectional view of the present invention Figure 2 .

[0017] In the figure: 1, support frame; 2, accommodating member; 3, annular accommodating cavity; 4, feeding channel; 5, discharging channel; 6, support plate; 7, guide rod; 8, driving reciprocating lead screw; 9, first driving motor; 10, first arc-shaped sliding member; 11, first electromagnet; 12, second arc-shaped sliding member; 13, second electromagnet; 14, first adjusting plate; 15, adjusting rod; 16, second adjusting plate; 17, third adjusting plate; 18, fourth adjusting plate; 19, first magnetic block; 20, second magnetic block; 21, fifth adjusting plate; 22, driving ring member; 23, guide ring; 24, annular groove; 25, third magnetic block; 26, driving gear ring; 27, second driving motor; 28, driving gear; 29, feeding pipe; 30, feeding funnel; 31, plugging block. Detailed implementation mode

[0018] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0019] The auxiliary equipment for assembling the planetary shaft of the speed reducer, as Figure 1 , Figure 5 , Figure 6 , Figure 7 and Figure 8 shown, includes a support frame 1 and an accommodating member 2 fixedly connected to the support frame 1 by welding. The provided support frame 1 is used to stably support and limit each part, ensuring that the overall function of the structure can be stably realized. The accommodating member 2 is horizontally arranged, and an annular accommodating cavity 3 for placing the planetary shaft and liquid nitrogen is provided at the middle position in the length direction. Under the action of the annular accommodating cavity 3, it is used to temporarily store the liquid nitrogen, ensuring that the planetary shaft entering the annular accommodating cavity 3 can be in stable contact with the liquid nitrogen, so that the liquid nitrogen can stably perform cryogenic treatment on the planetary shaft, causing the size of the planetary shaft to temporarily shrink, ensuring that the subsequent process of installing the planetary shaft is more stable and convenient. Liquid nitrogen is filled in the annular accommodating cavity 3 near the bottom side. Under the action of the annular accommodating cavity 3, the liquid nitrogen is stably stored, reducing the situation of the container filled with liquid nitrogen tipping over and further reducing the risk of liquid nitrogen spilling. A feeding channel 4 and a discharging channel 5 with coincident central axes are provided on the accommodating member 2 near the top side. The cross-sectional shapes of the feeding channel 4 and the discharging channel 5 in the width direction are both set to be circular. The bottom ends of the discharging channel 5 and the feeding channel 4 are tangent to the inner bottom surface of the annular accommodating cavity 3. The feeding channel 4 and the discharging channel 5 are both communicated with the annular accommodating cavity 3. The accommodating member 2 is provided with a driving structure for driving the planetary shaft to enter the annular accommodating cavity 3 from the feeding channel 4 and pass through the accommodating member 2 from the discharging channel 5. Under the action of the provided driving structure, the planetary shaft can be stably driven into the accommodating member 2 and come into contact with the liquid nitrogen. Then, under the action of the driving structure, the cryogenically treated planetary shaft passes through the accommodating member 2 and is available for the user to take.

[0020] As Figure 1, Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the driving structure includes a front driving part, a middle driving part, and a rear driving part arranged in sequence along the material delivery direction. The front driving part is used to drive the material to enter the annular accommodating cavity 3 along the feeding channel 4. Under the action of the front driving part, the planetary shaft can be stably driven to enter the annular accommodating cavity 3 from the feeding channel 4. The middle driving part is used to drive the planetary shaft to slide along the annular accommodating cavity 3. Under the action of the middle driving part, the planetary shaft is driven to slide in the annular accommodating cavity 3. On the one hand, the planetary shaft can be stably contacted with liquid nitrogen to realize the freezing treatment of the planetary shaft. On the other hand, the planetary shaft that slides to the lower part of the annular accommodating cavity 3 can slide to a position directly opposite to the feeding channel 4 and the discharging channel 5, so that the planetary shaft in the annular accommodating cavity 3 can stably enter the feeding channel 4 and pass through the accommodating part 2 from the feeding channel 4. The rear driving part is used to drive the planetary shaft to pass through the accommodating part 2 from the discharging channel 5. Under the action of the rear driving part, the frozen planetary shaft is stably driven to pass through the accommodating part 2, which is convenient for the user to take the frozen planetary shaft and makes the installation process of the planetary shaft more convenient.

[0021] As Figures 1 - 4 shown, symmetrically arranged support plates 6 for supporting the driving structure are fixedly connected to the accommodating part 2 by welding. The provided support plates 6 are used to stably support and limit the driving structure, ensuring that the functions of the driving structure can be stably realized. One side of the support plate 6 is fixedly connected with a guide rod 7 by welding. A driving reciprocating lead screw 8 is rotatably connected to the support plate 6 on the side away from the guide rod 7. A first driving motor 9 for driving the driving reciprocating lead screw 8 to rotate is fixedly connected to the support plate 6 near the feeding channel. The first driving motor 9 is set as a servo motor. By utilizing the stable driving characteristics of the servo motor, it is ensured that the first driving motor 9 has good and stable driving performance. Under the action of the first driving motor 9, the driving reciprocating lead screw 8 can be stably driven to rotate, and thus the driving reciprocating lead screw 8 can stably realize its driving function.

[0022] As Figures 1 - 6As shown in the figure, the front drive part includes a first arc-shaped sliding member 10 that is used for driving connection with the driving reciprocating lead screw 8 and sliding connection with the guide rod 7. Under the action of the guide rod 7, the stable guiding and limiting effects on the sliding process of the first arc-shaped sliding member 10 can be stably realized, ensuring that the sliding and driving processes of the first arc-shaped sliding member 10 are more stable. Under the action of the driving reciprocating lead screw 8, the first arc-shaped sliding member 10 can perform reciprocating sliding, ensuring that the sliding and driving functions of the first arc-shaped sliding member 10 can be stably realized. A first electromagnet 11 facing the feeding channel 4 is fixedly connected to the inner first arc-shaped sliding member 10 by means of bolt locking. The first electromagnet 11 is energized during the process of sliding towards the annular accommodating cavity 3, and de-energized during the process of sliding away from the annular accommodating cavity 3. After the first electromagnet 11 is energized, magnetism will appear, and the magnetism will disappear after the first electromagnet 11 is de-energized. During the sliding process of the first arc-shaped sliding member 10, the first electromagnet 11 will be driven to slide. When the first electromagnet 11 is energized, the planetary shaft in the feeding channel 4 will be driven to slide towards the annular accommodating cavity 3. During the process of the first arc-shaped sliding member 10 sliding away from the annular accommodating cavity 3, as the first electromagnet 11 is de-energized, the magnetism of the first electromagnet 11 disappears, and the first arc-shaped sliding member 10 will not drive the planetary shaft to slide towards the opening of the feeding channel 4, ensuring that the planetary shaft can be stably fed into the annular accommodating cavity 3.

[0023] As Figures 5 - 8 shown in the figure, the rear drive part includes a second arc-shaped sliding member 12 that is used for driving connection with the driving reciprocating lead screw 8 and sliding connection with the guide rod 7. A second electromagnet 13 facing the discharging channel 5 is fixedly connected to the inner second arc-shaped sliding member 12 by means of bolt locking. The second electromagnet 13 is energized during the process of sliding away from the annular accommodating cavity 3 and also energized during the process of sliding towards the annular accommodating cavity 3. After the second electromagnet 13 is energized, magnetism will be generated, and the previously generated magnetism will disappear after the second electromagnet 13 is de-energized. Under the action of the guide rod 7, the stable guiding and limiting effects on the sliding process of the second arc-shaped sliding member 12 are realized, ensuring that the sliding process of the second arc-shaped sliding member 12 is smoother and more stable. Under the action of the driving reciprocating lead screw 8, the second arc-shaped sliding member 12 can be driven to perform stable reciprocating sliding. Under the combined action of the second arc-shaped sliding member 12 and the second electromagnet 13, the rear drive part can stably drive the planetary shaft passing through the annular accommodating cavity 3 to stably pass through the accommodating member 2 along the discharging channel 5.

[0024] As Figures 2 - 7As shown, a first adjusting plate 14 is fixedly connected to the support plate 6 near one side of the discharge channel 5 by welding. An adjusting rod 15 is slidably connected to the first adjusting plate 14. A second adjusting plate 16 sleeved on the adjusting rod 15 and in clearance fit with the adjusting rod 15 is fixedly connected to the second arc-shaped sliding member 12 by welding. A third adjusting plate 17 is fixedly connected to the adjusting rod 15 near one side of the second adjusting plate 16, and a fourth adjusting plate 18 is fixedly connected to the adjusting rod 15 far from one side of the second adjusting plate 16. A first magnetic block 19 that attracts each other is fixedly connected between the fourth adjusting plate 18 and the first adjusting plate 14. When the first magnetic blocks 19 attract each other, both the first electromagnet 11 and the second electromagnet 13 are in the energized state. A second magnetic block 20 that attracts each other is fixedly connected between the third adjusting plate 17 and the first adjusting plate 14. When the second magnetic blocks 20 attract each other, both the first electromagnet 11 and the second electromagnet 13 are in the de-energized state. Under the action of the mutual attraction between the first magnetic blocks 19, the energized state of the first electromagnet 11 and the second electromagnet 13 is ensured to be more stable. Under the action of the mutual attraction between the second magnetic blocks 20, the de-energized state of the first electromagnet 11 and the second electromagnet 13 is ensured to be more stable. One end of the adjusting rod 15 near one side of the second adjusting plate 16 is fixedly connected to a fifth adjusting plate 21 by welding. Under the action of the second adjusting plate 16 abutting against the fifth adjusting plate 21, it is ensured that the second adjusting plate 16 can apply a force to the adjusting rod 15, overcome the mutual attraction force between the second magnetic blocks 20, and at the same time ensure that the first magnetic blocks 19 can attract each other, ensuring that the first electromagnet 11 and the second electromagnet 13 can be stably energized. Under the action of the second adjusting plate 16 and the third adjusting plate 17, it is ensured that the second adjusting plate 16 can apply a force to the adjusting rod 15, overcome the mutual attraction force between the first magnetic members, and at the same time ensure that the second magnetic blocks 20 can attract each other, ensuring that the first electromagnet 11 and the second electromagnet 13 can be stably de-energized.

[0025] As Figure 1 , Figure 5 , Figure 7 and Figure 8As shown in the figure, the middle drive part includes a drive ring 22 sleeved on the accommodating part 2 and facing the annular accommodating cavity 3. Symmetrically arranged guide rings 23 are fixedly connected to the inner side of the drive ring 22 by welding. An annular groove 24 for the guide rings 23 to penetrate and slide is formed on the accommodating part 2. The stable guiding and limiting of the sliding process of the drive ring 22 are realized by the common action of the guide rings 23 and the annular groove 24, ensuring that the driving process and driving effect of the drive ring 22 can be stably realized. A third magnetic block 25 facing the annular accommodating cavity 3 is fixedly connected to the drive ring 22. A drive gear ring 26 is fixedly connected to the outer side of the drive ring 22. A second drive motor 27 is fixedly connected to the support frame 1 by means of bolt locking. A drive gear 28 meshing with the drive gear ring 26 is fixedly connected to the second drive motor 27. Under the action of the second drive motor 27, the drive gear 28 can be stably driven to rotate. During the rotation of the drive gear 28, the drive gear ring 26 is driven to rotate through its meshing with the drive gear ring 26. During the rotation of the drive gear ring 26, the drive ring 22 fixedly connected thereto is driven to rotate. During the rotation of the drive ring 22, the third magnetic block 25 is driven to rotate. Furthermore, the planetary shaft in the annular accommodating cavity 3 is driven to move by the magnetic force of the rotating third magnetic block 25, so that the planetary shaft can move into the liquid nitrogen and to the opening of the discharge channel 5, and the planetary shaft can enter the discharge channel 5 from the annular accommodating cavity 3 and slide out of the accommodating part 2 from the discharge channel 5.

[0026] As Figures 1 - 4 shown, a feed pipe 29 communicating with the annular accommodating cavity 3 is fixedly connected to the accommodating part 2 by welding. A feed funnel 30 is connected to the top of the feed pipe 29. A plug 31 for blocking the top opening of the feed pipe 29 is detachably connected to the top end of the feed pipe 29. Under the action of the plug 31, the amount of liquid nitrogen flowing out of the accommodating part 2 from the accommodating part 2 and the feed pipe 29 can be reduced. While reducing the waste of liquid nitrogen, it is ensured that the liquid nitrogen in the accommodating part 2 can stably realize the freezing treatment of the planetary shaft. With the aid of the feed funnel 30, it is used to stably assist the process of adding liquid nitrogen, making the process of adding liquid nitrogen smoother.

[0027] The usage method of the auxiliary equipment for assembling the planetary shaft of the speed reducer is as Figures 1 - 8 shown, and it is used for the usage of the auxiliary equipment for assembling the planetary shaft of the above speed reducer, including, Step 1: Feed liquid nitrogen into the annular accommodating cavity 3 through the feed funnel 30 and the feed pipe 29, and close the opening of the feed pipe 29 with the plug 31; Step 2: Plug the planetary shafts into the feed channel 4 one by one, start the first drive motor 9 and the second drive motor 27, and use the front drive part to feed the planetary shafts into the annular accommodating cavity 3 of the accommodating part 2 through the feed channel 4; Step 3: Drive the planetary shafts to dip into and out of the liquid nitrogen stored in the annular accommodating cavity 3 one by one with the help of the middle driving part; Step 4: Then, feed the planetary shafts into the feeding channel 4, and drive the planetary shafts in the annular accommodating cavity 3 to pass out of the accommodating part 2 through the discharging channel 5 under the action of the driving structure for the user to pick up.

[0028] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An auxiliary device for assembling the planetary shaft of a speed reducer, characterized in that: It includes a support frame (1) and a receiving member (2) fixedly connected to the support frame (1). The receiving member (2) is horizontally arranged, and a ring-shaped receiving cavity (3) for placing the planetary shaft and liquid nitrogen is provided at the middle position in the length direction thereof. Liquid nitrogen is filled in the ring-shaped receiving cavity (3) near the bottom side. A feeding channel (4) and a discharging channel (5) with coincident central axes are provided on the receiving member (2) near the top side. The feeding channel (4) and the discharging channel (5) are both in communication with the ring-shaped receiving cavity (3). A driving structure is provided on the receiving member (2) for driving the planetary shaft to enter the ring-shaped receiving cavity (3) from the feeding channel (4) and pass through the receiving member (2) from the discharging channel (5).

2. The auxiliary equipment for assembling the planetary shaft of a speed reducer according to claim 1, characterized in that: The driving structure includes a front driving part, a middle driving part, and a rear driving part arranged in sequence along the material delivery direction. The front driving part is used for driving the material to enter the ring-shaped receiving cavity (3) along the feeding channel (4). The middle driving part is used for driving the planetary shaft to slide along the ring-shaped receiving cavity (3). The rear driving part is used for driving the planetary shaft to pass through the receiving member (2) from the discharging channel (5).

3. The auxiliary equipment for assembling the planetary shaft of the speed reducer according to claim 2, characterized in that: Symmetrically arranged support plates (6) for supporting the driving structure are fixedly connected to the receiving member (2). A guide rod (7) is fixedly connected to one side of the support plate (6). A driving reciprocating lead screw (8) is rotatably connected to the support plate (6) on the side away from the guide rod (7). A first driving motor (9) for driving the driving reciprocating lead screw (8) to rotate is fixedly connected to the support plate (6) near the feeding channel side.

4. The auxiliary equipment for assembling the planetary shaft of a speed reducer according to claim 3, characterized in that: The front driving part includes a first arc-shaped sliding member (10) used for being in transmission connection with the driving reciprocating lead screw (8) and slidingly connected to the guide rod (7). A first electromagnet (11) facing the feeding channel (4) is fixedly connected to the inner first arc-shaped sliding member (10). The first electromagnet (11) is energized during the process of sliding towards the ring-shaped receiving cavity (3) and de-energized during the process of sliding away from the ring-shaped receiving cavity (3).

5. The auxiliary equipment for assembling the planetary shaft of a speed reducer according to claim 3, characterized in that: The rear driving part includes a second arc-shaped sliding member (12) used for being in transmission connection with the driving reciprocating lead screw (8) and slidingly connected to the guide rod (7). A second electromagnet (13) facing the discharging channel (5) is fixedly connected to the inner second arc-shaped sliding member (12). The second electromagnet (13) is energized during the process of sliding away from the ring-shaped receiving cavity (3) and energized during the process of sliding towards the ring-shaped receiving cavity (3).

6. The auxiliary equipment for assembling the planetary shaft of a speed reducer according to claim 5, characterized in that: A first adjusting plate (14) is fixedly connected to the support plate (6) on one side close to the discharge channel (5). An adjusting rod (15) is slidably connected to the first adjusting plate (14). A second adjusting plate (16) which is sleeved on the adjusting rod (15) and has a clearance fit with the adjusting rod (15) is fixedly connected to the second arc-shaped sliding member (12). A third adjusting plate (17) is fixedly connected to the adjusting rod (15) on one side close to the second adjusting plate (16). A fourth adjusting plate (18) is fixedly connected to the adjusting rod (15) on one side away from the second adjusting plate (16). A first magnetic block (19) which attracts each other is fixedly connected between the fourth adjusting plate (18) and the first adjusting plate (14). A second magnetic block (20) which attracts each other is fixedly connected between the third adjusting plate (17) and the first adjusting plate (14). One end of the adjusting rod (15) on one side close to the second adjusting plate (16) is fixedly connected to a fifth adjusting plate (21).

7. The auxiliary equipment for assembling the planetary shaft of a speed reducer according to claim 1, characterized in that: The middle driving part includes a driving ring member (22) which is sleeved on the accommodating member (2) and faces the annular accommodating cavity (3). Symmetrically arranged guiding rings (23) are fixedly connected to the inner side of the driving ring member (22). An annular groove (24) for the guiding rings (23) to penetrate and slide is formed in the accommodating member (2). A third magnetic block (25) which faces the annular accommodating cavity (3) is fixedly connected to the driving ring member (22). A driving gear ring (26) is fixedly connected to the outer side of the driving ring member (22). A second driving motor (27) is fixedly connected to the support frame (1). A driving gear (28) which meshes with the driving gear ring (26) is fixedly connected to the second driving motor (27).

8. The auxiliary equipment for assembling the planetary shaft of a speed reducer according to claim 1, wherein: A feeding pipe (29) which is communicated with the annular accommodating cavity (3) is fixedly connected to the accommodating member (2). A feeding funnel (30) is communicated with the top of the feeding pipe (29). A plug (31) for blocking the top opening of the feeding pipe (29) is detachably connected to the top end of the feeding pipe (29).

9. A method of using an auxiliary device for assembling a planetary shaft of a speed reducer, which is used for the auxiliary device for assembling a planetary shaft of a speed reducer according to any one of claims 1-8, characterized in that: including Step 1: Feed liquid nitrogen into the annular accommodating cavity (3) through the feeding funnel (30) and the feeding pipe (29), and close the opening of the feeding pipe (29) through the plug (31). Step 2: Sequentially insert the planetary shafts into the feeding channel (4), start the first driving motor (9) and the second driving motor (27), and feed the planetary shafts into the annular accommodating cavity (3) of the accommodating member (2) through the feeding channel (4) by means of the front driving part. Step 3: Drive the planetary shafts to be immersed in and pass through the liquid nitrogen stored in the annular accommodating cavity (3) one by one by means of the middle driving part. Step 4: Feed the planetary shafts into the feeding channel (4) again, and drive the planetary shafts in the annular accommodating cavity (3) to pass out of the accommodating member (2) through the discharge channel (5) for the user to take under the action of the driving structure.

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