Automatic mounting equipment for gear and rotating shaft

Abstract

The invention relates to the technical field of automatic assembly, and discloses gear and rotating shaft automatic mounting equipment which comprises a press machine body, a hydraulic cylinder used for extrusion and a workbench used for supporting are mounted on the press machine body, a first limiting part is mounted at the output end of the hydraulic cylinder, and a second limiting part is mounted on the workbench. The limiting part I and the limiting part II are used for limiting the gear and the rotating shaft respectively; the first limiting part comprises a first metal plate and a second metal plate which are used for limiting the gear. The second limiting part comprises a limiting plate installed on the workbench, and a cleaning assembly used for cleaning is installed in the limiting plate. According to the invention, the uniformly coated lubricating oil can effectively protect the matching surface and reduce the generation of abrasion and scratches, and the lubricating oil is added after the rotating shaft is limited, so that the lubricating oil is effectively prevented from adhering stains in the external environment, and the operation is more convenient; and the gear and the rotating shaft are kept clean to the greatest extent.

Description

Technical Field

[0001] The invention relates to the technical field of automatic assembly, in particular to an automatic installation device for gears and rotating shafts. Background Art

[0002] The installation process of the shaft and gear requires precise operation to ensure their normal operation and long-term stability. The shaft and gear can be matched in a variety of ways, including flat key fit, tapered pin fit, clearance fit, interference fit and pressure sleeve fit, among which interference fit refers to the interference state between the gear hole and the shaft, that is, the size of the gear hole is smaller than the size of the shaft. The gear needs to be assembled to the shaft through a certain method. Interference fit has the characteristics of strong load-bearing capacity and not easy to loosen, but the assembly process is more complicated.

[0003] Based on this interference fit, it is necessary to operate under the action of pressure. First, clean the surface of the gear hole and the shaft to ensure that there is no impurities such as oil, dust, etc. Secondly, when the interference is small, the static pressing method can be used to press the gear into the shaft using a press or hydraulic device. During the pressing process, the pressure and the speed should be controlled to avoid damage to the gear or shaft. When the interference is slightly larger, the dynamic pressing method can be used to use an impact tool, such as a manual impactor or a mechanical impactor, to knock the gear so that it is gradually pressed into the shaft. During the knocking process, the appropriate impact point and impact force should be selected to avoid damage to the gear or shaft. The dynamic pressing method can also be used in conjunction with a press to improve assembly efficiency and accuracy.

[0004] After cleaning the gear hole and the shaft surface, the gear and shaft need to be installed on a press, and then the automatic assembly is completed under the action of the press. When installing on the press, the gear and shaft are easily contaminated again, especially the shaft, which is more difficult to clean because it is located on the press and the cleaning range is limited.

[0005] In addition, when the interference fit is moderate, applying an appropriate amount of lubricant can help the assembly process go smoothly. The lubricant needs to be evenly distributed on the outer wall of the shaft, and it is difficult to achieve a uniform effect by manual application.

[0006] When the interference fit is large, applying lubricating oil may not play an effective lubricating role, but may increase the difficulty of assembly. The gear holes and shafts need to be kept dry. Gear holes and shafts in a dry state are prone to generate static electricity after being cleaned, and static electricity will cause stains to be absorbed, further increasing the difficulty of fitting. Summary of the invention

[0007] The object of the present invention is to provide a gear and shaft automatic installation device to solve the problems raised in the above background technology.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: an automatic installation device for gears and rotating shafts, comprising a press body, a hydraulic cylinder for extrusion and a workbench for support are installed on the press body, a limiting part 1 is installed at the output end of the hydraulic cylinder, and a limiting part 2 is installed on the workbench, and the limiting part 1 and the limiting part 2 limit the gear and the rotating shaft respectively;

[0009] The limiting part 1 includes a metal plate 1 and a metal plate 2 for limiting the position of the gear;

[0010] The second limiting part comprises a limiting plate installed on the workbench, a cleaning assembly for cleaning is installed in the limiting plate, the rotating shaft is sleeved in the cleaning assembly, and a pleated layer for guiding airflow is sleeved on the outer side of the cleaning assembly;

[0011] The cleaning component is driven by gas to clean the stains.

[0012] Furthermore, a positioning shaft for positioning is fixed to the upper end of the metal plate 1, and the positioning shaft extends into the interior of the press body. The upper end of the metal plate 1 is fixed to the output end of the hydraulic cylinder.

[0013] Furthermore, the metal plate 1 and the metal plate 2 are symmetrical in the vertical direction and are fixed. The metal plate 1 and the metal plate 2 are respectively provided with a cavity opening 1 and a cavity opening 2 on the surfaces where the metal plate 1 and the metal plate 2 are in contact. The cavity opening 1 and the cavity opening 2 are the same and one side of the cavity opening 1 and the cavity opening 2 extends outwards for placing the gear inside.

[0014] A transfer port and a cleaning port are passed through the lower end of the second metal plate upward. The transfer port is connected with the outside along the second cavity port. The cleaning port is connected with the transfer port, and the cleaning port coincides with the gear axis. The cleaning port is used to cooperate with the cleaning component to clean the gear hole, and the transfer port is used to cooperate with the rotating shaft to take out the rotating shaft and gear that have been matched.

[0015] Furthermore, a positioning portion is provided in the second metal plate, and the positioning portion includes an arc-shaped opening opened on the inner wall of the second cavity opening, and an arc-shaped strip that can slide up and down along the arc-shaped opening is provided in the arc-shaped opening, and a positioning spring is fixed between the arc-shaped strip and the inner wall of the arc-shaped opening;

[0016] The arc strip is used to limit the gear, and the outer edge of the arc strip extending outward is chamfered for pushing the gear to the inside of the arc strip. The distance between the upper end of the arc strip and an inner wall of the cavity is the same as the thickness of the gear.

[0017] Furthermore, the workbench has a mounting hole extending from top to bottom, the mounting hole is used to limit the rotating shaft, and the workbench also has a ring opening coaxial with the mounting hole extending from top to bottom, and the cleaning assembly is installed in the ring opening.

[0018] Furthermore, a discharge port connected to the mounting hole is opened on the side of the workbench, a stop block for supporting the rotating shaft slides in the discharge port, and the discharge port is arranged in a "convex" shape.

[0019] Furthermore, a cylinder is integrally formed at the upper end of the limit plate, the cylinder is used to sleeve the rotating shaft, the inner wall of the cylinder has a circle of air intake ring, the outer side of the cylinder is provided with an air intake port connected to the air intake ring, and the air intake port is cut along the tangent of the air intake ring.

[0020] Furthermore, the cleaning assembly includes a rotating ring placed in the ring mouth, multiple groups of supporting springs are fixed to the upper end of the rotating ring, two circles of supporting ring layers are provided on the upper end of the supporting springs, multiple groups of circularly distributed inclined plates are fixed between the two circles of supporting ring layers, and the multiple groups of inclined plates are all sleeved in the cylinder body. The gas moving from the air inlet is used to drive the inclined plates to rotate, and the inclined plates are used to clean the outer wall of the rotating shaft. The supporting ring layer at the lower end is fixed to the multiple groups of supporting springs.

[0021] Furthermore, a layer of rubber strip is provided on the inner side of the plurality of groups of inclined sheets, and the rubber strip is in contact with the rotating shaft.

[0022] Furthermore, the pleated layer is fixed to the upper end of the cylinder, the pleated layer covers the multiple groups of inclined sheets, a buckle ring is fixed on the upper support ring layer, the buckle ring is used to clamp the upper end of the pleated layer, and the diameter of the buckle ring is the same as the diameter of the cleaning port;

[0023] A plurality of groups of the inclined plates extend upwardly from the rotating shaft, and air outlets are provided between the extended inclined plates and adjacent inclined plates.

[0024] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0025] 1. Pouring the lubricating oil directly onto the shaft will cause the lubricating oil to move downward along the edge of the shaft. The inclined plate will rotate and scrape the lubricating oil moving along the outer wall of the shaft until the last second before the gear and the shaft mate. Evenly coating the lubricating oil can effectively protect the mating surface and reduce the occurrence of wear and scratches. Adding lubricating oil after limiting the shaft can effectively prevent the lubricating oil from adhering to stains in the external environment, making the operation more convenient.

[0026] 2. The gas pushes the inclined plate to rotate, and the gas moves outward from the air outlet, discharging the stains adhering to the outside of the shaft due to static electricity. The gears gradually move downward, blowing away the stains in the gear holes, keeping the gears and shafts clean to the greatest extent.

[0027] 3. By directly placing the gears and shafts, they can be automatically cleaned and matched later. The structure is simple and the degree of automation is high, which is suitable for batch processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the structure of the limiting part 1 and the limiting part 2 of the present invention;

[0031] Figure 3 It is a schematic diagram of the side section structure of the workbench of the present invention;

[0032] Figure 4 This is a schematic diagram of the main structure of the limiting part of the present invention;

[0033] Figure 5 It is a schematic diagram of the exploded structure of the limiting part of the present invention;

[0034] Figure 6 It is a schematic diagram of the second structure of the metal plate of the present invention;

[0035] Figure 7 It is a schematic diagram of the cross-sectional structure of the workbench of the present invention;

[0036] Figure 8 The present invention Figure 7 A is a schematic diagram of the partially enlarged structure of the middle part;

[0037] Fig. 9 It is a schematic diagram of the structure of the limiting plate of the present invention;

[0038] Fig.10 It is a schematic diagram of the coordination structure of the pleated layer and the cleaning port of the present invention.

[0039] In the figure: 1. press machine body; 2. hydraulic cylinder; 3. workbench; 31. mounting hole; 32. discharge port; 33. stop block; 34. ring mouth; 4. limit part 1; 41. metal plate 1; 42. positioning shaft; 43. metal plate 2; 44. cavity mouth 1; 45. cavity mouth 2; 46. transfer port; 47. cleaning port; 48. positioning part; 481. arc mouth; 482. arc strip; 483. positioning spring; 5. limit part 2; 51. limit plate; 511. cylinder; 512. intake ring; 513. intake port; 52. cleaning assembly; 521. swivel; 522. support spring; 523. support ring layer; 524. inclined sheet; 525. outlet; 53. pleated layer; 531. buckle ring. DETAILED DESCRIPTION

[0040] 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.

[0041] See also Figure 1-Figure 10 The present invention provides a technical solution: when the gear and the rotating shaft are interference-fitted, a press or a hydraulic device is required to press the gear into the rotating shaft. Before the interference-fit process between the gear and the rotating shaft, the rotating shaft surface and the inner wall of the gear hole need to be effectively cleaned to ensure that there are no impurities such as oil, dust, etc., and the size, shape and tolerance of the gear hole and the rotating shaft are checked to ensure that they meet the design requirements. Based on this, an automatic installation device for gears and rotating shafts is proposed, such as Figure 1 As shown, the press machine body 1 includes a hydraulic cylinder 2 for extrusion and a workbench 3 for support, the output end of the hydraulic cylinder 2 is installed with a limiting part 1, and the workbench 3 is installed with a limiting part 2 5. The limiting part 1 4 and the limiting part 2 5 limit the gear and the rotating shaft respectively. Through the action of the hydraulic cylinder 2, the limiting part 1 4 and the limiting part 2 5 are brought close to each other to complete the matching between the gear and the rotating shaft;

[0042] like Figure 2 As shown, the gear needs to be limited, and the limiting part 1 4 includes a metal plate 1 41 and a metal plate 2 43 for limiting the gear;

[0043] like Figure 2 As shown, the rotating shaft needs to be limited and cleaned. The limiting part 2 5 includes a limiting plate 51 installed on the workbench 3. A cleaning assembly 52 for cleaning is installed in the limiting plate 51. The rotating shaft is sleeved in the cleaning assembly 52. ​​The outer side of the cleaning assembly 52 is sleeved with a pleated layer 53 for guiding airflow.

[0044] The cleaning component 52 is driven by gas to clean the stains, wherein the source of the gas is an air pump, and the gas is transmitted through the action of the air pump.

[0045] like Figure 2 As shown, in order to avoid position deviation during the up and down movement of the limit part 4 and ensure the fit between the gear and the rotating shaft, a positioning shaft 42 for positioning is fixed to the upper end of the metal plate 41, and the positioning shaft 42 extends to the inside of the press body 1. The upper end of the metal plate 41 is fixed to the output end of the hydraulic cylinder 2, and the gear and the rotating shaft are pushed to have an interference fit through the action of the hydraulic cylinder 2.

[0046] like Figure 4 and Figure 5As shown, the metal plate 1 41 and the metal plate 2 43 are required to limit the gear. The metal plate 1 41 and the metal plate 2 43 are symmetrical up and down, and the two are fixed. The metal plate 1 41 and the metal plate 2 43 are respectively provided with a cavity 1 44 and a cavity 2 45 on the surface where they are in contact. The cavity 1 44 and the cavity 2 45 are the same, and one side of them extends outward, so as to place the gear inside. The gear is installed by pushing the cavity 1 44 and the cavity 2 45 inward from the outside.

[0047] A transfer port 46 and a cleaning port 47 are passed through the lower end of the second metal plate 43. The transfer port 46 is connected to the outside along the cavity port 45, and the cleaning port 47 is connected to the transfer port 46, and the cleaning port 47 coincides with the gear axis. The cleaning port 47 is used to cooperate with the cleaning component 52 to clean the gear hole, and the transfer port 46 is used to cooperate with the rotating shaft to take out the matched rotating shaft and gear. It should be noted that the width of the transfer port 46 is greater than or equal to the diameter of the rotating shaft, and the matched rotating shaft is moved horizontally out of the transfer port 46. The cleaning port 47 moves downward with the action of the hydraulic cylinder 2, so that the cleaning port 47 cooperates with the locking ring 531, so that the gas moving outward from the air outlet 525 moves into the gear hole, generates airflow towards the gear hole, blows away the adhered stains, and ensures that the gear and the rotating shaft are in a clean state during the matching process.

[0048] like Figure 6 As shown, in order to limit the position of the gear so that the axis of the gear hole coincides with the axis of the rotating shaft, a positioning portion 48 is further provided in the second metal plate 43. The positioning portion 48 includes an arc-shaped opening 481 opened on the inner wall of the second cavity opening 45. An arc-shaped strip 482 that can slide up and down along the arc-shaped opening 481 is provided in the arc-shaped opening 481. A positioning spring 483 is fixed between the arc-shaped strip 482 and the inner wall of the arc-shaped opening 481.

[0049] The arc strip 482 is used to limit the gear. The outer edge of the arc strip 482 is chamfered, which is used to push the gear to the inside of the arc strip 482. The distance between the upper end of the arc strip 482 and the inner wall of the cavity 1 44 is the same as the thickness of the gear. The gear is pushed inward along the cavity 1 44 and the cavity 2 45. The gear first contacts the chamfer of the arc strip 482. Under the action of the gravity of the gear, the arc strip 482 is squeezed into the arc mouth 481 to ensure smooth movement of the gear. After that, the arc strip 482 extends upward under the action of the positioning spring 483 to limit the gear.

[0050] like Figure 7 As shown, the rotating shaft needs to be installed and cleaned. The workbench 3 has a mounting hole 31 extending from top to bottom. The mounting hole 31 is used to limit the rotating shaft. The workbench 3 also extends a ring mouth 34 coaxial with the mounting hole 31 from top to bottom. The cleaning component 52 is installed in the ring mouth 34 so that the cleaning component 52 cleans the rotating shaft.

[0051] The workbench 3 is provided with a discharge port 32 on the side thereof which is connected with the mounting hole 31. A stop block 33 for supporting the rotating shaft slides inside the discharge port 32. The discharge port 32 is provided in a "convex" shape. The rotating shaft abuts against the stop block 33, and local stains are located on the stop block 33. The stop block 33 can be pulled out horizontally to clean the stains, thereby ensuring the accurate position of the rotating shaft.

[0052] like Figure 7 and Fig. 9 As shown, a cylinder 511 is integrally formed at the upper end of the limit plate 51, and the cylinder 511 is used for sleeve-mounting the rotating shaft. The inner wall of the cylinder 511 is provided with a circle of air intake ring 512, and an air intake port 513 connected with the air intake ring 512 is opened on the outer side of the cylinder 511. The air intake port 513 is cut into the air intake ring 512 along the tangent line. The gas moving inward from the air intake port 513 moves along the air intake ring 512 and pushes and rotates the inclined plate 524, and the gas also blows out the stains from the air outlet 525.

[0053] like Figure 7 As shown, the cleaning assembly 52 includes a rotating ring 521 placed in the ring mouth 34, and multiple groups of supporting springs 522 are fixed on the upper end of the rotating ring 521. Two circles of supporting ring layers 523 are arranged on the upper end of the supporting springs 522. Multiple groups of circumferentially distributed inclined plates 524 are fixed between the two circles of supporting ring layers 523. The multiple groups of inclined plates 524 are all sleeved in the cylinder 511. The gas moving from the air inlet 513 is used to drive the inclined plates 524 to rotate. The inclined plates 524 are used to clean the outer wall of the rotating shaft. The supporting ring layer 523 at the lower end is fixed to the multiple groups of supporting springs 522. Although the cleaning assembly 52 blocks the upper end of the rotating shaft, During the gear matching process, the cleaning component 52 will be squeezed downward to compress the support spring 522 of the cleaning component 52. It should be noted that since the elastic force of the support spring 522 is relatively small, it can be easily squeezed, so that the outward squeezing force of the swivel 521 and the buckling ring 531 at the lower end is small, and the outer contact surfaces of the swivel 521 and the buckling ring 531 are also smoothly set to ensure rotation. At the same time, even if the support spring 522 will produce local torsional effect, it still keeps the outer sides of the swivel 521 and the buckling ring 531 against the outer interfaces on both sides under the action of elasticity.

[0054] like Figure 8 As shown, a layer of rubber strip is provided on the inner side of the plurality of inclined sheets 524, and the rubber strip is in contact with the rotating shaft to prevent scratches on the rotating shaft.

[0055] like Fig.10 As shown, the pleated layer 53 is fixed to the upper end of the cylinder 511, and the pleated layer 53 covers the multiple groups of inclined sheets 524. A buckle ring 531 is fixed on the upper end of the support ring layer 523, and the buckle ring 531 is used to clamp the upper end of the pleated layer 53. The diameter of the buckle ring 531 is the same as the diameter of the cleaning port 47, so that the pleated layer 53 is fixed, and the buckle ring 531 is against the lower end surface of the gear through the cleaning port 47;

[0056] like Figure 8 and Fig. 9 As shown, multiple groups of inclined plates 524 extend upward from the rotating shaft, and air outlets 525 are provided between the extended inclined plates 524 and adjacent inclined plates 524. The air outlets 525 discharge dirt and blow air toward the gear holes to clean the gear holes.

[0057] The working principle of the present invention is as follows: the gear and the rotating shaft are limited by the limiting part 1 4 and the limiting part 2 5 respectively, the limiting part 1 4 is pushed downward by the hydraulic cylinder 2 to achieve an interference fit between the gear and the rotating shaft, and the hydraulic cylinder 2 is lifted upward to take out the matched gear and the rotating shaft upward, and can be taken out as a whole from the transfer port 46.

[0058] It should be noted that during the matching process between the gear and the shaft, there are two situations: the interference fit is moderate with the addition of lubricating oil and the interference fit is large without the addition of lubricating oil.

[0059] One is to add lubricating oil. After the shaft is placed in the mounting hole 31 from top to bottom, the upper end of the cleaning assembly 52 extends upward from the shaft, and Figure 8 and Fig. 9 As shown, an air outlet 525 is formed, and the lubricating oil is poured directly onto the rotating shaft, which will cause the lubricating oil to move downward along the edge of the rotating shaft and move downward through the air outlet 525. Gas is introduced from the air inlet 513 to make the gas move along the air inlet ring 512, pushing the bevel plate 524 to rotate. The bevel plate 524 will scrape the lubricating oil moving along the outer wall of the rotating shaft to make the lubricating oil evenly distributed on the outer wall of the rotating shaft until one second before the gear and the rotating shaft are matched, ensuring that the lubricating oil is in a uniform state. Evenly coated lubricating oil can effectively protect the mating surface and reduce the occurrence of wear and scratches. The additives in the lubricating oil can also form a protective film between the mating surfaces to further prevent damage to the mating surfaces. In addition, the lubricating oil is added after the rotating shaft is limited, which effectively prevents the lubricating oil from adhering to stains in the external environment, and at the same time makes the operation more convenient.

[0060] Secondly, no lubricating oil is added. After the rotating shaft is placed from top to bottom in the mounting hole 31, the gas still pushes the inclined piece 524 to rotate, so that the outer wall of the rotating shaft is scraped. At the same time, because the gas is blocked by the pleated layer 53, the gas moves outward from the air outlet 525, and the stains adhering to the outside of the rotating shaft due to static electricity are discharged. At the same time, before the gear and the rotating shaft cooperate, the gear gradually moves downward, and the gas moving outward from the air outlet 525 is blown from the cleaning port 47 to blow away the stains in the gear hole, so that the gear and the rotating shaft are not affected by the stains during the cooperation process. Compared with cleaning before installation on the press, the gear and the rotating shaft can be kept clean to the greatest extent.

[0061] When the gear is installed in the limiting part 4, the gear is pushed into the cavity 1 44 and the cavity 2 45 so that the gear automatically squeezes the arc strip 482 and is subsequently limited by the arc strip 482. In the process of the limiting part 1 4 and the limiting part 2 5 approaching each other, the gear automatically cooperates with the rotating shaft. When the cooperation is completed and taken out, the gear and the rotating shaft are lifted up to slide along the inner wall of the cavity 1 44 to take out the gear and the rotating shaft. By directly placing the gear and the rotating shaft, they can be automatically cleaned and cooperated later. The structure is simple and the degree of automation is high, which is suitable for batch processing.

[0062] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0063] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic gear and shaft installation device, comprising a press body (1), on which a hydraulic cylinder (2) for extrusion and a workbench (3) for support are installed, characterized in that: The output end of the hydraulic cylinder (2) is provided with a limiting part 1 (4), and the workbench (3) is provided with a limiting part 2 (5), wherein the limiting part 1 (4) and the limiting part 2 (5) respectively limit the gear and the rotating shaft; The limiting portion 1 (4) comprises a metal plate 1 (41) and a metal plate 2 (43) for limiting the position of the gear; The second limiting part (5) comprises a limiting plate (51) mounted on the workbench (3), a cleaning assembly (52) for cleaning being mounted inside the limiting plate (51), the rotating shaft being sleeved inside the cleaning assembly (52), and a pleated layer (53) for guiding airflow being sleeved on the outer side of the cleaning assembly (52); The cleaning component (52) is driven by gas to clean the stains.

2. The automatic gear and shaft installation device according to claim 1 is characterized in that: A positioning shaft (42) for positioning is fixed to the upper end of the metal plate 1 (41), and the positioning shaft (42) extends into the interior of the press body (1). The upper end of the metal plate 1 (41) is fixed to the output end of the hydraulic cylinder (2).

3. The automatic gear and shaft installation device according to claim 1 is characterized in that: The metal plate 1 (41) and the metal plate 2 (43) are symmetrical in the vertical direction and fixed to each other. The metal plate 1 (41) and the metal plate 2 (43) are respectively provided with a cavity 1 (44) and a cavity 2 (45) on one side where the metal plate 1 (41) and the metal plate 2 (43) are in contact with each other. The cavity 1 (44) and the cavity 2 (45) are identical and extend outward on one side for placing the gear inside. The lower end of the second metal plate (43) is penetrated upward by a transfer port (46) and a cleaning port (47); the transfer port (46) is connected to the outside along the second cavity port (45); the cleaning port (47) is connected to the transfer port (46), and the cleaning port (47) coincides with the axis of the gear; the cleaning port (47) is used to cooperate with the cleaning component (52) to clean the gear hole; the transfer port (46) is used to cooperate with the rotating shaft to remove the rotating shaft and gear after the cooperation.

4. The automatic gear and shaft installation device according to claim 3 is characterized in that: A positioning portion (48) is further provided in the second metal plate (43), the positioning portion (48) comprising an arc-shaped opening (481) formed on the inner wall of the second cavity opening (45), the arc-shaped opening (481) having an arc-shaped strip (482) that can slide up and down along the arc-shaped opening (481), and a positioning spring (483) is fixed between the arc-shaped strip (482) and the inner wall of the arc-shaped opening (481); The arc strip (482) is used to limit the gear position; the outer edge of the arc strip (482) extending outward is chamfered to push the gear to the inside of the arc strip (482); the distance between the upper end of the arc strip (482) and the inner wall of the cavity opening (44) is the same as the thickness of the gear.

5. The automatic gear and shaft installation device according to claim 3 is characterized in that: The workbench (3) has a mounting hole (31) extending from top to bottom, the mounting hole (31) being used to limit the rotation shaft, and the workbench (3) also has a ring opening (34) extending from top to bottom that is coaxial with the mounting hole (31), and the cleaning assembly (52) is installed in the ring opening (34).

6. The automatic gear and shaft installation device according to claim 5, characterized in that: The workbench (3) is laterally provided with a discharge port (32) which is in communication with the mounting hole (31), a stopper (33) for supporting the rotating shaft slidingly disposed in the discharge port (32), and the discharge port (32) is arranged in a "convex" shape.

7. The automatic gear and shaft installation device according to claim 5, characterized in that: A cylinder (511) is integrally formed at the upper end of the limit plate (51), the cylinder (511) being used to sleeve a rotating shaft, the inner wall of the cylinder (511) being provided with a circle of air intake ring (512), the outer side of the cylinder (511) being provided with an air intake port (513) connected to the air intake ring (512), the air intake port (513) being cut into along a tangent line of the air intake ring (512).

8. The automatic gear and shaft installation device according to claim 7, characterized in that: The cleaning assembly (52) comprises a rotating ring (521) placed in the ring opening (34); a plurality of groups of supporting springs (522) are fixed to the upper end of the rotating ring (521); two circles of supporting ring layers (523) are provided at the upper end of the supporting springs (522); a plurality of groups of circumferentially distributed inclined plates (524) are fixed between the two circles of the supporting ring layers (523); the plurality of groups of inclined plates (524) are all sleeved in the cylinder (511); the gas moving from the air inlet (513) is used to drive the inclined plates (524) to rotate; the inclined plates (524) are used to clean the outer wall of the rotating shaft; the supporting ring layer (523) at the lower end is fixed to the plurality of groups of supporting springs (522).

9. The automatic gear and shaft installation device according to claim 8, characterized in that: A layer of rubber strip is provided on the inner side of the plurality of groups of inclined sheets (524), and the rubber strip is in contact with the rotating shaft.

10. The automatic gear and shaft installation device according to claim 8, characterized in that: The pleated layer (53) is fixed to the upper end of the cylinder (511), and the pleated layer (53) covers the plurality of inclined sheets (524). A buckle ring (531) is fixed to the upper end of the support ring layer (523), and the buckle ring (531) is used to clamp the upper end of the pleated layer (53), and the diameter of the buckle ring (531) is the same as the diameter of the cleaning port (47); A plurality of groups of the inclined plates (524) extend upwardly from the rotating shaft, and an air outlet (525) is provided between the extended inclined plates (524) and adjacent inclined plates (524).

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