A motor input parallel output split box reducer

Abstract

The present invention provides a motor input parallel output split-box reducer, comprising a reduction box, a multi-stage reduction gear set, wherein the reduction box is divided into two parts: a main box body and a split box body that can be detachably connected, the interface between the main box body and the split box body corresponds to the first stage reduction gear set, the small gear of the first stage reduction gear set is detachably mounted on its shaft, and the large gear of the first stage reduction gear set is detachably mounted on the shaft of the large gear; the outer end of the split box body is provided with a part connected to the connecting part of the motor; the transmission shafts of each stage in the multi-stage reduction gear set are parallel. The present invention can meet the dealer's needs according to the customer's needs, can quickly and conveniently adjust the speed ratio, and can reduce the inventory and capital occupation as much as possible.

Description

Technical Field

[0001] The invention relates to the field of reduction motors. Background Art

[0002] A reduction motor is a reducer or speed reducer with a motor. After the multi-stage transmission of the reducer or speed reducer is reduced, a lower speed is output, which meets the needs of actual working conditions, simplifies the transmission route of actual working conditions, saves costs and transmission space, and is widely used. In the past, the reduction motor usually consists of two parts: the motor and the reduction box. Under the condition that the motor speed remains unchanged, a reduction motor corresponds to a speed ratio and outputs a speed. The installation and removal of the transmission parts in the reduction box are limited by the box structure, and usually there is only one path. If the installed reducer needs to replace the parts, it must be removed in the opposite path to the installation path. It is very inconvenient to replace it after leaving the factory, especially the first-stage transmission gear, which is often installed initially. When it is replaced, all the subsequent transmissions need to be removed. This puts forward higher requirements on the installation accuracy of the reducer. The meshing parts in the box must be disassembled in turn and the first-stage transmission gear must be replaced. For dealers, it is not possible to prepare all kinds of reducers with different speed ratios. Even if they manage to prepare reducers with different speed ratios, it will inevitably cause huge inventory and occupy funds, which is not conducive to quickly responding to market demand. Summary of the invention

[0003] The purpose of the present invention is to provide a motor input parallel output split box reducer, which can meet the dealer's needs according to the customer's needs, can quickly and conveniently adjust the speed ratio, and can reduce the inventory and capital occupation as much as possible. To this end, the present invention adopts the following technical solutions:

[0004] A motor input parallel output split-box reducer, comprising a reduction box and a multi-stage reduction gear set, characterized in that the reduction box is divided into two parts, a main box body and a sub-box body, which are detachably connected, and the interface between the main box body and the sub-box body corresponds to the first-stage reduction gear set, the small gear of the first-stage reduction gear set is detachably mounted on its shaft, and the large gear of the first-stage reduction gear set is detachably mounted on the shaft of the large gear;

[0005] The outer end of the sub-box body is provided with a portion connected to the connecting portion of the motor;

[0006] The transmission shafts of each stage in the multi-stage reduction gear set are parallel.

[0007] Furthermore, the main box body is provided with an open end at the side close to the sub-box body, and a supporting partition is provided at the bottom of the open end, and the small gear and the large gear are located in the space formed by the open end and the sub-box body.

[0008] Furthermore, the box body is provided with a right shaft hole of the first-stage large gear shaft, and a supporting partition is provided on the side of the main box body close to the sub-box body, and the supporting partition is provided with a left shaft hole of the first-stage large gear shaft; the left and right ends of the first-stage large gear shaft are respectively fixed to the sub-box body and the main box body through the first bearing and the second bearing.

[0009] Furthermore, the pinion is fixed to the motor shaft via a pinion key, and a detachable pinion retaining ring is provided at the outer end of the motor shaft to prevent the pinion from loosening.

[0010] Furthermore, the first-stage large gear is fixed on the first-stage large gear shaft through a first-stage large gear key, and the other end of the first-stage large gear shaft is provided with a second-stage small gear.

[0011] Furthermore, the sub-box body is provided with a right shaft hole of a first-stage large gear shaft, and an intermediate supporting partition is provided on the side of the main box body close to the sub-box body, and the intermediate supporting partition is provided with a left shaft hole of the first-stage large gear shaft; the first-stage large gear shaft is provided with a first bearing on the right side of the first-stage large gear, and a first hole retaining ring is provided on the outer side of the first bearing and on the right shaft hole of the first-stage large gear shaft of the sub-box body, the first hole retaining ring blocks the outer side of the outer ring of the first bearing, the inner side of the inner ring of the first bearing contacts with the right end face of the first-stage large gear, the left end face of the first-stage large gear contacts with the right side of the shoulder raised in the middle of the first-stage large gear shaft, the left shaft shoulder of the second-stage pinion on the first-stage large gear shaft contacts with the right side of the inner ring of the second bearing, and the left shaft hole of the first-stage large gear shaft is provided with a second hole retaining ring on the left side of the outer ring of the second bearing, and the first hole retaining ring, the second hole retaining ring, the first bearing and the second bearing axially fix the first-stage large gear and the second-stage pinion on the first-stage large gear shaft.

[0012] Furthermore, an intermediate support partition is provided on one side of the main box body close to the sub-box body, an intermediate shaft hole of the secondary large gear shaft is provided on the intermediate support partition, a left shaft hole of the secondary large gear shaft is provided on one side of the main box body away from the sub-box body, and a right shaft hole of the secondary large gear shaft is provided on the sub-box body;

[0013] The second-stage large gear shaft has a third bearing at the right end and a fourth bearing at the left end. A fifth bearing is provided between the second-stage large gear and the third-stage small gear. The third bearing is located in the right shaft hole of the second-stage large gear shaft. The right shaft hole of the second-stage large gear shaft has an inner hole shoulder on the outer side of the third bearing and contacts the right side of the outer ring of the third bearing. The fourth bearing is located in the left shaft hole of the second-stage large gear shaft. A third hole retaining ring is provided in the left shaft hole of the second-stage large gear shaft. The third hole retaining ring contacts the left side of the outer ring of the fourth bearing. The fifth bearing is located in the middle shaft hole of the second-stage large gear shaft. A first sleeve is provided between the second-stage large gear and the third bearing. The right end face of the first sleeve contacts the left side of the inner ring of the third bearing. The length of the first sleeve is used to adjust the clearance during installation.

[0014] Furthermore, a middle supporting partition is provided on one side of the main box body close to the sub-box body, a right shaft hole of the third-stage large gear shaft is provided on the middle supporting partition, and a left shaft hole of the third-stage large gear shaft is provided on one side of the main box body away from the sub-box body;

[0015] A sixth bearing is provided at the right end of the three-stage large gear shaft, located on the right side of the three-stage large gear. The shaft diameter of the three-stage large gear shaft at the three-stage large gear is larger than the shaft diameter at the sixth bearing. The left side of the inner ring of the sixth bearing contacts the right end face of the three-stage large gear. The second shaft retaining ring located on the right side of the sixth bearing and on the three-stage large gear shaft contacts the right side of the inner ring of the sixth bearing. The right side of the outer ring of the sixth bearing contacts the shoulder on the right shaft hole of the three-stage large gear shaft. The seventh bearing is on the left side of the three-stage large gear, with a second shaft sleeve therebetween. The three-stage gear shaft has a raised shaft diameter at the left side of the seventh bearing, the right shoulder of the raised shaft diameter contacts the left side of the inner ring of the seventh bearing, the right side of the outer ring of the seventh bearing contacts the shoulder on the left shaft hole of the three-stage large gear shaft, and the second shaft sleeve is located between the seventh bearing and the three-stage large gear, and its length is used to adjust the clearance during installation.

[0016] A connecting flange that can be used for the output installation of the reducer is provided on the left side of the main housing and the outer side of the seventh bearing. The connecting flange also serves as the left axial positioning component of the seventh bearing. The connecting flange is fixed to the main housing by bolts. A sealing ring is provided between the connecting flange hole and the raised shaft diameter on the left side of the seventh bearing to prevent the lubricating oil from leaking out when the internal gear of the reducer rotates.

[0017] Due to the adoption of the technical solution of the present invention, the present invention adopts a split-box structure, which divides the reduction box into two detachable parts between the primary and secondary transmissions. After adopting this structure, the dealer only needs to equip the primary reduction gears with different speed ratios. When the customer needs to change the speed ratio, the transmission input assembly is removed, and then the bolts connecting the split box body and the main box body are removed, and the split box body can be removed. The primary large gear shaft can be directly removed from the side of the split box body and the primary large gear can be replaced. At the same time, the primary small gear can also be conveniently removed, and the primary small gear and the primary large gear with the same center distance can be conveniently replaced. The reduction ratio can be adjusted by reinstalling it without disassembling the secondary speed gear, which is conducive to the quick replacement of the primary transmission gear and convenient for customers to configure the speed ratio by themselves. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is one of the schematic diagrams of the reducer chassis according to an embodiment of the present invention.

[0019] Figure 2 This is the second schematic diagram of the reducer chassis according to an embodiment of the present invention.

[0020] Figure 3 This is an outline diagram of a reducer according to an embodiment of the present invention.

[0021] Figure 4 for Figure 3 AA section view (schematic diagram of primary transmission engagement).

[0022] Figure 5 for Figure 3 BB cross-sectional view (secondary transmission meshing diagram).

[0023] Figure 6 for Figure 3 CC section view (schematic diagram of three-stage transmission engagement).

[0024] Figure 7 for Figure 4 DD cross-sectional view.

[0025] Figure 8 for Figure 5 EE cross-sectional view. DETAILED DESCRIPTION

[0026] The present invention is further described in detail with reference to the accompanying drawings and specific embodiments. In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top", "bottom", "left", "right" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second" and the like ordinal numbers are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] As shown in the figure. The motor input parallel output split box reducer provided in this embodiment includes the following structure:

[0028] Main reference Figure 4 , 7 The first-stage pinion 1 is fixed on the motor output shaft 3 through the first-stage pinion key 2 and meshes with the first-stage large gear 4. The motor output shaft 3 is provided with a first shaft retaining ring 25 on the outer side of the first-stage pinion 1 to prevent the first-stage pinion 1 from axially loosening. The first-stage large gear 4 is fixed on the first-stage large gear shaft 8 through the first-stage large gear key 7. The other end of the first-stage large gear shaft 8 is provided with a second-stage pinion 9. Main reference Figure 5 , 8 The secondary pinion 9 is meshed with the secondary gear 11, the secondary gear 11 is fixed to the secondary gear shaft 13 through the secondary gear key 12, and the other end of the secondary gear shaft 13 is provided with a third pinion 14, mainly referring to Figure 6 The third-stage small gear 14 is meshed with the third-stage large gear 19, and the third-stage large gear 19 is fixed on the third-stage large gear shaft 15 through the third-stage large gear key 18.

[0029] Main reference Figure 7The first-stage large gear shaft 8 is provided with a first bearing 6 on the right side of the first-stage large gear 4, and a first hole retaining ring 5 is provided on the right shaft hole 241 of the first-stage large gear shaft of the sub-box body 24 outside the first bearing 6. The first hole retaining ring 5 blocks the outer side of the outer ring of the first bearing 6, and the inner side of the inner ring of the first bearing 6 contacts the right end face of the first-stage large gear 4, and the left end face of the first-stage large gear 4 contacts the right side of the middle raised shoulder of the first-stage large gear shaft 8. The left shoulder of the second-stage small gear 9 on the first-stage large gear shaft 8 contacts the right side of the inner ring of the second bearing 10. An intermediate support partition 230 is provided on the side of the main box body 23 close to the sub-box body 24, and a first-stage large gear shaft left shaft hole 231 is provided on the intermediate support partition 230. The left shaft hole 231 of the first-stage large gear shaft is provided with a second hole retaining ring 34 on the left side of the outer ring of the second bearing 10. The first hole retaining ring 5, the second hole retaining ring 34, the first bearing 6, and the second bearing 10 axially fix the first-stage large gear 4 and the second-stage small gear 9 on the first-stage large gear shaft 8, and with respect to the main housing, these components are located at the open end outside the middle supporting partition 230; the left and right ends of the first-stage large gear shaft 8 are fixed to the sub-housing 24 and the main housing 23 respectively through the first bearing 6 and the second bearing 10.

[0030] Main reference Figure 8The second-stage gear shaft 13 has a third bearing 28 at the right end and a fourth bearing 31 at the left end. A fifth bearing 30 is provided between the second-stage gear 11 and the third-stage pinion 14. The third bearing 28 is located in the right shaft hole 242 of the second-stage gear shaft of the sub-box 24. The right shaft hole 242 of the second-stage gear shaft has an inner hole shoulder 281 on the outside of the third bearing 28, which contacts the right side of the outer ring of the third bearing 28. The fourth bearing 31 is located in the left shaft hole 232 of the main box 23. The second-stage gear shaft of the main box 23 A third hole retaining ring 32 is provided in the left shaft hole 232, and the third hole retaining ring 32 contacts the left side of the outer ring of the fourth bearing 31. The fifth bearing 30 is located in the intermediate shaft hole 233 of the secondary large gear shaft on the middle support partition 230 of the main box body 23. The right shaft hole 242 of the secondary large gear shaft of the sub-box body 24, the left shaft hole 232 of the secondary large gear shaft of the main box body 23, and the intermediate shaft hole 233 of the secondary large gear shaft of the main box body 23 are of the same center and have the same aperture. A cover 33 is provided on the left outer side of the fourth bearing 31 to prevent the lubricating oil in the box from leaking out. A first sleeve 29 is provided between the second-stage gear 11 and the third bearing 28. The right end face of the first sleeve 29 contacts the left side of the inner ring of the third bearing 28. From right to left, the left end face of the first sleeve 29 contacts the right end face of the second-stage gear 11, the left end face of the second-stage gear 11 contacts the right side of the inner ring of the fifth bearing 30, and the left side of the inner ring of the fifth bearing 30 contacts the right shoulder of the third-stage pinion 14. The left shoulder of the pinion 14 contacts the right side of the inner ring of the fourth bearing 31. The third bearing 28, the first sleeve 29, the secondary gear 11 and the fourth bearing 31 are axially fixed by the third hole retaining ring 32 and the shoulder 281 of the right shaft hole 242 of the secondary gear shaft of the sub-box body 24. The length of the first sleeve 29 is used to adjust the clearance during installation. When the axial dimension is too tight during installation, the length of the first sleeve 29 is appropriately trimmed. Usually, the length of the first sleeve 29 is 0.1-0.3mm more than the design allowable dimension.

[0031] Main reference Figure 8The right end of the three-stage large gear shaft 15 is provided with a sixth bearing 20 located on the right side of the three-stage large gear 19. The shaft diameter of the three-stage large gear shaft 15 at the three-stage large gear 19 is greater than the shaft diameter at the sixth bearing 20. The left side of the inner ring of the sixth bearing 20 contacts the right end face of the three-stage large gear 19. The second shaft retaining ring 21 located on the right side of the sixth bearing 20 and on the three-stage large gear shaft 15 contacts the right side of the inner ring of the sixth bearing 20. The right shaft hole 234 of the three-stage large gear shaft is provided on the middle support partition 230 of the main box body 23. The right side of the outer ring of the sixth bearing 20 contacts the right shaft hole 234 of the three-stage large gear shaft of the main box body 23. 4, the seventh bearing 16 is on the left side of the third-stage large gear 15, with a second sleeve 17 between the two, the third-stage gear shaft 15 has a raised shaft diameter at the left side of the seventh bearing 16, the right shoulder of the raised shaft diameter contacts the left side of the inner ring of the seventh bearing 16, the right side of the outer ring of the seventh bearing 16 contacts the shoulder 161 on the left shaft hole 235 of the third-stage large gear of the main box body 23, the second sleeve 17 is located between the seventh bearing 16 and the third-stage large gear 19, and its length can be corrected according to the axial clearance during installation. Usually, the length of the second sleeve 17 is 0.10-0.30mm larger than the design allowable size.

[0032] A box cover 22 is provided above the main box body 23. After removing the box cover 22, it is convenient to install the three-stage large gear 19. On the left side of the main box body 23, the outer side of the seventh bearing 16 is provided with a connecting flange 35 that can be used for the output installation of the reducer. The connecting flange 35 is fixed to the main box body 23 by bolts. The connecting flange 35 also serves as the left axial positioning component of the seventh bearing. A sealing ring 36 is provided between the hole of the connecting flange 35 and the raised shaft diameter on the left side of the seventh bearing 16 to prevent the lubricating oil from leaking out when the gear inside the reducer rotates.

[0033] The motor 26 equipped with the primary pinion 1 is installed on the outside of the sub-box body 24 through the connecting end face 27. The outer end of the sub-box body 24 is provided with a portion connected to the connecting end face 27, including the abutting end face 240 and the bolt holes thereon.

[0034] The left and right of the first-stage large gear shaft right shaft hole 241 and the first-stage large gear shaft left shaft hole 231 are reference Figure 7 At their positions, the two are on the same axis, wherein the shaft hole on the right side of the first-stage large gear 4 is the first-stage large gear shaft right shaft hole 241 , and the shaft hole on the left side of the first-stage large gear 4 is the first-stage large gear shaft left shaft hole 231 .

[0035] The second-stage large gear shaft right shaft hole 242, the second-stage large gear shaft left shaft hole 232, and the second-stage large gear shaft middle shaft hole 233 are reference Figure 8The three are located on the same axial center line, wherein the shaft hole located on the right side of the secondary large gear 11 is the right shaft hole 242 of the secondary large gear shaft, the shaft hole located on the leftmost side of the secondary large gear 11 is the left shaft hole 232 of the secondary large gear shaft, and the shaft hole located between the right shaft hole 242 of the secondary large gear shaft and the left shaft hole 232 of the secondary large gear shaft is the middle shaft hole 233 of the secondary large gear shaft.

[0036] The third-stage large gear right shaft hole 234 and the third-stage large gear left shaft hole 235 are reference Figure 8 or Figure 7 At their positions, the two are on the same axis, wherein the shaft hole on the right side of the third-stage large gear 19 is the third-stage large gear right shaft hole 234 , and the shaft hole on the left side of the third-stage large gear 19 is the third-stage large gear left shaft hole 235 .

[0037] The left shaft hole 231 of the first-stage large gear shaft and the middle shaft hole 233 of the second-stage large gear shaft are both located at the lower part of the middle supporting partition 230 , and the right shaft hole 234 of the third-stage large gear is located at the upper part of the middle supporting partition 230 .

[0038] Reference Figure 7 and Figure 8 The first-stage large gear shaft right shaft hole 241 and the first-stage large gear shaft left shaft hole 231 are located behind the second-stage large gear shaft right shaft hole 242, the second-stage large gear shaft left shaft hole 232, and the second-stage large gear shaft intermediate shaft hole 233 in the diagram, and the third-stage large gear shaft right shaft hole 234 and the third-stage large gear shaft left shaft hole 235 are located on the upper part of the second-stage large gear shaft left shaft hole 232 and the second-stage large gear shaft intermediate shaft hole 233 in the diagram.

[0039] The transmission route of the present invention is that the power is rotated by the motor 26 to rotate the motor output shaft 3, which drives the primary pinion 1 fixed to the motor output shaft 3 through the primary pinion key 2 to rotate, and after being decelerated by the primary large gear 4 meshing with the primary pinion 1, it drives the primary large gear shaft 8 and the secondary pinion 9 to rotate, and then decelerated by the secondary large gear 11 meshing with the secondary pinion 9. While the secondary large gear 11 is decelerated, the secondary large gear shaft 13 and the third pinion 14 are also decelerated synchronously. The decelerated third pinion 14 is further decelerated by the third large gear 19 meshing with it. Speed, so that the three-stage large gear shaft 15 rotating with the three-stage large gear 19 outputs a lower speed. In actual application, according to needs, the extended shaft of the three-stage large gear shaft 15 after deceleration can be installed with transmission elements such as sprockets and pulleys, and the second reduction box can also be connected and installed through an optional connecting flange 35. The three-stage gear shaft 15 can be connected to the recessed input shaft in the second reduction box or connected to the gear in the second reduction box to achieve further deceleration and obtain a larger reduction ratio. Different meshing ratios of the gears at each level can obtain many speed ratios to meet the needs of actual applications.

[0040] In order to achieve a smaller reduction box and a larger reduction ratio, the present invention adopts a three-stage reduction parallel transmission shaft. The first and second stage transmission shafts are composed of a parallel motor output shaft 3, a first stage large gear shaft 8, and a second stage large gear shaft 13, which are distributed in a triangular shape, and the large and small gears are staggered, which saves a lot of space in the box. The first stage large gear 4 is coaxial with the second stage small gear 9, and the second stage large gear 11 is coaxial with the third stage small gear 14. The structure is compact and simple, which is conducive to installation, maintenance and reducing manufacturing costs.

[0041] In the past, reduction motors usually consist of two parts: a motor and a reduction box. One reduction motor corresponds to one speed ratio and outputs one speed. The installation and disassembly of the transmission parts in the reduction box are limited by the box structure and usually have only one path. If the installed reducer needs to have parts replaced, it must be dismantled in the opposite direction of the installation path. It is very inconvenient to replace it after leaving the factory. The meshing parts in the box must be disassembled one by one and then the primary transmission gear must be replaced. For dealers, it is impossible to prepare reducers with various speed ratios. Even if they manage to prepare reducers with different speed ratios, it will inevitably result in huge inventory and capital occupation, which is not conducive to quickly responding to market demand. The present invention adopts a split-box structure, and the reduction box is divided into two detachable parts at the primary transmission, namely the main box body 23 and the split box body 24 shown in the figure. After adopting this structure, the dealer only needs to equip the primary reduction gears with different speed ratios. When the customer needs to adjust the reduction ratio, the bolts connecting the connecting end face 27 of the motor 26 and the split box body 24 are removed, and the primary pinion 1 is taken out together with the motor 26, and then the bolts connecting the split box body 24 and the main box body 23 are removed, and the split box body 24 can be removed. After that, the primary large gear shaft 9 and the primary large gear 4, the first bearing 6, the second bearing 10, and the secondary pinion 9 thereon can be directly removed from the side of the split box body. After the first bearing 6 is removed, the primary large gear 4 can be removed, and the primary pinion 1 can also be conveniently taken out from the motor output shaft 3. The primary pinion 1 and the primary large gear 4 with the same center distance are replaced, and then the reduction ratio adjustment is completed by reinstalling. The split box is conducive to the quick replacement of the primary transmission gear, which is convenient for customers to configure the speed ratio by themselves.

[0042] The above description is only a specific embodiment of the present invention, but the structural features of the present invention are not limited thereto. Any changes or modifications made by any technician in the field of the present invention are all included in the protection scope of the present invention.

Claims

1. A motor input parallel output split box reducer, comprising a reducer box, a multi-stage reduction gear set, characterized in that The reduction gear box is divided into two parts, a main box body and a sub-box body, which are detachably connected. The interface between the main box body and the sub-box body corresponds to the first-stage reduction gear set. The small gear of the first-stage reduction gear set is detachably mounted on its shaft, and the large gear of the first-stage reduction gear set is detachably mounted on the shaft of the large gear. The outer end of the sub-box body is provided with a portion connected to the connecting portion of the motor; The transmission shafts of each stage in the multi-stage reduction gear set are parallel; The main box body is provided with an open end on the side close to the sub-box body, and an intermediate supporting partition is provided at the bottom of the open end, and the small gear and the large gear are located in the space formed by the open end and the sub-box body; The sub-box body is provided with a right shaft hole of a first-stage large gear shaft, and an intermediate supporting partition is provided on the side of the main box body close to the sub-box body, and the intermediate supporting partition is provided with a left shaft hole of the first-stage large gear shaft; the first-stage large gear shaft is provided with a first bearing on the right side of the first-stage large gear, and a first hole retaining ring is provided on the outer side of the first bearing on the right shaft hole of the first-stage large gear shaft of the sub-box body, the first hole retaining ring blocks the outer side of the outer ring of the first bearing, the inner side of the inner ring of the first bearing contacts with the right end face of the first-stage large gear, the left end face of the first-stage large gear contacts with the right side of the raised shoulder in the middle of the first-stage large gear shaft, the left shaft shoulder of the second-stage pinion on the first-stage large gear shaft contacts with the right side of the inner ring of the second bearing, and the left shaft hole of the first-stage large gear shaft is provided with a second hole retaining ring on the left side of the outer ring of the second bearing, and the first hole retaining ring, the second hole retaining ring, the first bearing and the second bearing axially fix the first-stage large gear and the second-stage pinion on the first-stage large gear shaft; The first hole retaining ring, the second hole retaining ring, the first bearing and the second bearing axially fix the first-stage large gear and the second-stage small gear on the first-stage large gear shaft, and for the main housing, the first-stage large gear and the second-stage small gear are located at the open end outside the middle supporting partition; the left and right ends of the first-stage large gear shaft are fixed to the sub-housing and the main housing respectively through the first bearing and the second bearing.

2. A motor input parallel output split box reducer as claimed in claim 1, characterized in that The box body is provided with a right shaft hole of the first-stage large gear shaft, and the side of the main box body close to the sub-box body is provided with an intermediate support partition, and the intermediate support partition is provided with a left shaft hole of the first-stage large gear shaft; the left and right ends of the first-stage large gear shaft are respectively fixed to the sub-box body and the main box body through the first bearing and the second bearing.

3. A motor input parallel output split box reducer as claimed in claim 1, characterized in that The pinion is fixed on the motor shaft through a pinion key, and a detachable pinion retaining ring is provided at the outer end of the motor shaft to prevent the pinion from loosening.

4. A motor input parallel output split box reducer as claimed in claim 1, characterized in that The first-stage large gear is fixed on the first-stage large gear shaft through the first-stage large gear key, and the other end of the first-stage large gear shaft is provided with a second-stage small gear.

5. The motor input parallel output split box reducer as claimed in claim 1, characterized in that An intermediate support partition is provided on one side of the main box body close to the sub-box body, and an intermediate shaft hole of the secondary large gear shaft is provided on the intermediate support partition. A left shaft hole of the secondary large gear shaft is provided on one side of the main box body away from the sub-box body, and a right shaft hole of the secondary large gear shaft is provided on the sub-box body; The second-stage large gear shaft has a third bearing at the right end and a fourth bearing at the left end. A fifth bearing is provided between the second-stage large gear and the third-stage small gear. The third bearing is located in the right shaft hole of the second-stage large gear shaft. The right shaft hole of the second-stage large gear shaft has an inner hole shoulder on the outer side of the third bearing and contacts the right side of the outer ring of the third bearing. The fourth bearing is located in the left shaft hole of the second-stage large gear shaft. A third hole retaining ring is provided in the left shaft hole of the second-stage large gear shaft. The third hole retaining ring contacts the left side of the outer ring of the fourth bearing. The fifth bearing is located in the middle shaft hole of the second-stage large gear shaft. A first sleeve is provided between the second-stage large gear and the third bearing. The right end face of the first sleeve contacts the left side of the inner ring of the third bearing. The length of the first sleeve is used to adjust the clearance during installation.

6. A motor input parallel output split box reducer as claimed in claim 1, characterized in that An intermediate support partition is arranged on one side of the main box body close to the sub-box body, a right shaft hole of the third-stage large gear shaft is arranged on the intermediate support partition, and a left shaft hole of the third-stage large gear shaft is arranged on one side of the main box body away from the sub-box body; A sixth bearing is provided at the right end of the three-stage large gear shaft, located on the right side of the three-stage large gear. The shaft diameter of the three-stage large gear shaft at the three-stage large gear is larger than the shaft diameter at the sixth bearing. The left side of the inner ring of the sixth bearing contacts the right end face of the three-stage large gear. The second shaft retaining ring located on the right side of the sixth bearing and on the three-stage large gear shaft contacts the right side of the inner ring of the sixth bearing. The right side of the outer ring of the sixth bearing contacts the shoulder on the right shaft hole of the three-stage large gear shaft. The seventh bearing is on the left side of the three-stage large gear, with a second shaft sleeve therebetween. The three-stage gear shaft has a raised shaft diameter at the left side of the seventh bearing, the right shoulder of the raised shaft diameter contacts the left side of the inner ring of the seventh bearing, the right side of the outer ring of the seventh bearing contacts the shoulder on the left shaft hole of the three-stage large gear shaft, and the second shaft sleeve is located between the seventh bearing and the three-stage large gear, and its length is used to adjust the clearance during installation. A connecting flange that can be used for the output installation of the reducer is provided on the left side of the main housing and the outer side of the seventh bearing. The connecting flange also serves as the left axial positioning component of the seventh bearing. The connecting flange is fixed to the main housing by bolts. A sealing ring is provided between the connecting flange hole and the raised shaft diameter on the left side of the seventh bearing to prevent the lubricating oil from leaking out when the internal gear of the reducer rotates.

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