Gear mechanism and its tractor

Abstract

The utility model relates to elevator technical field especially relates to a gear drive mechanism and hoisting machine thereof. Gear drive mechanism includes output seat and gear drive unit, and gear drive unit includes gear input assembly, gear drive assembly and gear output assembly, and output seat is used for and main box body connection, and is located in transmission cavity, gear input assembly and hoisting machine's motor output end synchronous motion connection, gear drive assembly and gear input assembly transmission connection, gear output assembly and gear drive assembly transmission connection, wherein, at least part of gear drive unit is installed in output seat, and is assembled in main box body through output seat. Its advantage lies in, through setting up and main box body detachable connection's output seat bears the structure of at least three bearing chambers, and again with main box body detachable connection, has reduced the process difficulty, and has reduced manufacturing maintenance cost, has promoted the maintainability.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, and in particular to a gear transmission mechanism and its traction machine. Background Technology

[0002] An elevator traction machine is the power unit of an elevator, typically installed in the elevator machine room or elevator shaft, providing power for the elevator's operation. The elevator traction machine consists of components such as a motor assembly, transmission mechanism, brake, and traction sheave. The motor drives the traction sheave to rotate by reducing its speed and increasing its torque through a gearbox. The friction between the steel wire rope and the sheave groove then propels the car and counterweight up and down. Specifically, the gearbox is connected to the motor via a gear transmission mechanism to change the motor's output speed.

[0003] The existing gear transmission mechanism includes a gear input assembly, a gear transmission assembly, and a gear output assembly. The gear input assembly is used for synchronous motion connection with the output end of the motor. The gear transmission assembly is connected to the gear input assembly to transmit power to the gear output assembly, which drives the traction sheave on the traction machine to rotate. Currently, all three require the gear set to be installed in the main housing of the traction machine before the bearings are adjusted and installed. The structure is shown in the attached instruction manual. Figure 6 As shown, this structure leads to complicated assembly steps for the gear transmission mechanism, which is not conducive to worker installation and operation, and will result in poor stress conditions for the bearings and gear sets, thus reducing the overall performance of the traction machine. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a gear transmission mechanism.

[0005] A gear transmission mechanism is installed in the main housing of a traction machine. The main housing has a drive cavity and a transmission cavity. At least a portion of the gear transmission mechanism is disposed in the transmission cavity. The gear transmission mechanism includes: an output seat for detachable connection with the main housing and located in the transmission cavity; and a gear transmission unit including a gear input assembly, a gear transmission assembly, and a gear output assembly. The gear transmission assembly is drively connected to the gear input assembly, and the gear output assembly is drively connected to the gear transmission assembly. At least a portion of the gear transmission unit is installed in the output seat and assembled in the main housing via the output seat.

[0006] This configuration, with its detachable output seat connected to the main housing of the traction machine, allows for separate machining of the output seat and the main housing, eliminating the need for integral casting. This significantly reduces manufacturing complexity, simplifies the internal structure and installation process of the main housing, lowers manufacturing and maintenance costs, and improves maintainability. At least a portion of the gear transmission unit is mounted on the output seat; therefore, the gear transmission unit can be assembled onto the output seat first, and then assembled together with the output seat into the main housing, further simplifying the assembly process.

[0007] In one embodiment, the gear output assembly includes an output shaft and an output gear, the output gear being connected to the outer periphery of the output shaft and meshing with the gear transmission assembly, and the output gear being at least partially housed in the output seat. Along the axial direction of the output shaft, the output shaft has a first segment and a second segment located on both sides of the output gear, the first segment and the second segment being respectively connected to the output seat.

[0008] In one embodiment, the output base includes a first base and a second base. The first base is connected to the main housing, and the second base protrudes toward the drive cavity and forms a support structure for supporting the output shaft. A receiving cavity is formed between the second base and the first base, the receiving cavity is in communication with the transmission cavity, and is used to accommodate at least a portion of the structure of the output gear.

[0009] In one embodiment, the second seat includes a connecting section and a supporting section. The connecting section is connected to the first seat, and the supporting section is connected to the end of the connecting section away from the first seat. The supporting section is arranged parallel to the first seat, and the connecting section is arranged at an angle to the first seat. The supporting section is supported on the first section, and the first seat is supported on the second section.

[0010] In one embodiment, a flange is provided on the outer peripheral side of the first seat, the flange extending radially outward away from the first seat, the flange being used to connect with the main housing of the traction machine.

[0011] In one embodiment, the first base has a first output hole, and the second base has a second output hole. The first output hole and the second output hole are coaxially arranged. The gear output assembly includes a fifth bearing and a sixth bearing. The fifth bearing is connected to the inner wall of the second output hole, and the sixth bearing is connected to the inner wall of the first output hole. The fifth bearing and the sixth bearing are respectively sleeved on the outer periphery of the output shaft.

[0012] In one embodiment, a first output step is provided on the outer periphery of the output shaft, and a second output step is provided on the inner wall of the second output hole. Along the axial direction of the output shaft, one side of the fifth bearing abuts against the first output step, and the other side abuts against the second output step.

[0013] The gear output assembly further includes a first limiting seat, which is sleeved on the outer periphery of the output shaft and abuts against the side of the sixth bearing away from the fifth bearing.

[0014] In one embodiment, the first limiting seat includes a first mating section and a first limiting section connected together. Along the axial direction of the output shaft, the first mating section is located outside the first output hole and connected to the first seat body. At least a portion of the first limiting section extends into the first output hole and abuts against the sixth bearing.

[0015] In one embodiment, the second housing has a transmission hole, the gear transmission assembly includes a transmission shaft, one end of the transmission shaft is provided with a first transmission gear that cooperates with the gear input assembly, the other end of the transmission shaft is provided with a second transmission gear that meshes with the output gear in the gear output assembly, one end of the transmission shaft passes through the transmission hole and is rotatably connected to the hole wall of the transmission hole, and the other end of the transmission shaft is rotatably connected to the inner wall of the main housing to form the transmission cavity.

[0016] This utility model also provides a traction machine, including the gear transmission mechanism as described above. The traction machine also includes a main housing, the main housing including a drive seat and a support seat. The drive seat has a drive cavity, and the support seat has a transmission cavity. Part of the gear input assembly is located in the drive cavity, and part of it is located in the transmission cavity. Both the gear transmission assembly and the gear output assembly are located in the transmission cavity.

[0017] Compared to existing technologies, this invention features an output seat that is detachably connected to the main housing of the traction machine. The output seat and the main housing can be manufactured separately, significantly reducing manufacturing complexity, simplifying the internal structure and installation process of the main housing, lowering manufacturing and maintenance costs, and improving maintainability. At least a portion of the gear transmission unit is mounted on the output seat; therefore, the gear transmission unit can be first assembled on the output seat and then assembled together with the output seat onto the main housing, simplifying the assembly process. Attached Figure Description

[0018] Figure 1 A partial structural cross-sectional schematic diagram of one embodiment of the traction machine provided by this utility model;

[0019] Figure 2 A structural cross-sectional view of the gear output assembly of one embodiment of the traction machine provided by this utility model;

[0020] Figure 3 A schematic diagram of the output base of one embodiment of the traction machine provided by this utility model;

[0021] Figure 4 A schematic diagram of the output seat from another angle of one embodiment of the traction machine provided by this utility model;

[0022] Figure 5 A cross-sectional view of one embodiment of the traction machine provided by this utility model;

[0023] Figure 6 This is a partial structural cross-sectional view of a conventional traction machine. The symbols in the figure have the following meanings:

[0024] 100. Traction machine; 10. Main housing; 11. Drive base; 1111. Second input hole; 112. End cover; 1121. First input hole; 12. Support base; 121. Transmission groove; 122. Second transmission step; 13. Drive cavity; 14. Transmission cavity; 20. Output base; 21. First base body; 211. Flanged edge; 212. First output hole; 213. Reinforcing rib; 22. Second base body; 221. Connecting section; 222. Support section; 223. Second output hole; 224. Second output step; 225. Transmission hole; 30. Gear input assembly; 31. First bearing group; 311. First input bearing; 312. Second input bearing; 32. Input shaft; 40. Gear transmission assembly; 41. Second... Bearing assembly; 411, Third bearing; 412, Fourth bearing; 42, Drive shaft; 421, First drive step; 43, Second limiting seat; 431, Second mating section; 432, Second limiting section; 44, First drive gear; 45, Second drive gear; 50, Gear output assembly; 51, Third bearing assembly; 511, Fifth bearing; 512, Sixth bearing; 52, Output shaft; 521, First output step; 522, Third output step; 523, Output gear; 524, First section; 525, Second section; 53, First limiting seat; 531, First mating section; 532, First limiting section; 200, Existing traction machine main housing; 201, Existing gear structure; 202, Existing bearing. Detailed Implementation

[0025] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0026] It should be noted that when a mechanism is referred to as being "fixed to" or "set on" another mechanism, it can be directly on the other mechanism or there may be an intervening mechanism. When a mechanism is considered to be "connected to" another mechanism, it can be directly connected to the other mechanism or there may be an intervening mechanism. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0030] Please see Figure 6 In the prior art, the prior art gear structure 201 needs to be installed in the prior art traction machine main housing 200 before the prior art bearing 202 is adjusted and installed. This structure makes the assembly steps of the gear transmission mechanism complicated, which is not conducive to the installation and operation of workers. It also leads to poor stress conditions of various components, resulting in a reduction in the overall performance of the traction machine.

[0031] Please see Figures 1-5This utility model provides a traction machine 100, in which the installation of the gear output assembly 50 and the support and fixation of some structures in the gear transmission assembly 40 are completed through the output seat 20. The output seat 20 is separately set from the main housing 10 and can be disassembled and assembled. Therefore, the output seat 20 can be processed separately, thereby reducing the difficulty and cost of the overall traction machine 100 processing technology.

[0032] This utility model also provides a gear transmission mechanism, which is installed in the main housing 10 of the traction machine 100. The main housing 10 is provided with a drive cavity 13 and a transmission cavity 14, and at least part of the gear transmission mechanism is disposed in the transmission cavity 14.

[0033] The gear transmission mechanism includes an output base 20 and a gear transmission unit. The gear transmission unit includes a gear input assembly 30, a gear transmission assembly 40, and a gear output assembly 50. The output base 20 is used to connect with the main housing 10 and is located in the transmission cavity 14. The gear input assembly 30 is synchronously connected to the output end of the traction machine motor. The gear transmission assembly 40 is drive-connected to the gear input assembly 30, and the gear output assembly 50 is drive-connected to the gear transmission assembly 40. At least a portion of the gear transmission unit is mounted on the output base 20 and assembled to the main housing 10 through the output base 20.

[0034] Thus, by providing an output seat 20 that is detachably connected to the main housing 10 of the traction machine 100, the output seat 20 and the main housing 10 of the traction machine 100 can be manufactured separately, greatly reducing the manufacturing difficulty, simplifying the internal structure and installation process of the main housing 10, reducing manufacturing and maintenance costs, and improving maintainability. At least part of the gear transmission unit is mounted on the output seat 20. Therefore, the gear transmission unit can be first assembled on the output seat 20, and after the positions of the gear set and bearing set are precisely adjusted, it can be assembled together with the output seat 20 into the main housing, avoiding the need to adjust the bearing set position within the main housing and simplifying the assembly process.

[0035] The gear output assembly 50 includes an output shaft 52 and an output gear 523. The output gear 523 is connected to the outer periphery of the output shaft 52 and meshes with the gear transmission assembly 40. The output gear 523 is at least partially housed in the output seat 20. Along the axial direction of the output shaft 52, the output shaft 52 has a first section 524 and a second section 525 located on both sides of the output gear 523. The first section 524 and the second section 525 are respectively connected to the output seat 20. In this way, both axial ends of the output gear 523 (i.e., the first section 524 and the second section 525) are supported by the output seat 20. The two support points form a simply supported beam structure, which is compact and has better stress conditions, making it more suitable for its respective load conditions, and also has better noise and life performance.

[0036] Furthermore, the output housing 20 includes a first housing 21 and a second housing 22. The first housing 21 is connected to the main housing 10, and the second housing 22 protrudes toward the drive cavity 13, forming a support structure for supporting the output shaft 52. A receiving cavity is formed between the second housing 22 and the first housing 21, communicating with the transmission cavity 14 and accommodating at least a portion of the structure of the output gear 523. Thus, the output gear 523 is located in the receiving cavity, and its axial space overlaps with that of the output housing 20, improving space utilization.

[0037] The second base 22 includes a connecting section 221 and a supporting section 222. The connecting section 221 is connected to the first base 21, and the supporting section 222 is connected to the end of the connecting section 221 away from the first base 21 and is arranged parallel to the first base 21. A third bearing assembly 51 is supported on both the first base 21 and the second base 22. Thus, the third bearing assembly 51 includes at least two bearings, and the two bearings are respectively connected to the first base 21 and the second base 22, which are spaced apart. The stress distribution is more even, and the structural strength of the output base 20 is also higher.

[0038] Specifically, the first seat 21 and / or the second seat 22 are provided with multiple reinforcing ribs 213, at least multiple reinforcing ribs 213 extend outward in the radial direction, at least multiple reinforcing ribs 213 extend in the circumferential direction, and the multiple reinforcing ribs 213 are interwoven to form a reinforcing structure that improves the structural strength of the output seat 20.

[0039] In this embodiment, the third bearing assembly 51 includes a fifth bearing 511 and a sixth bearing 512. The fifth bearing 511 is connected to the second housing 22, and the sixth bearing 512 is connected to the first housing 21. Preferably, in this embodiment, the fifth bearing 511 and the sixth bearing 512 are tapered roller bearings.

[0040] A flange 211 is provided on the outer periphery of the first base 21. The flange 211 extends radially outward away from the first base 21 and is connected to the support base 12. In this way, the flange 211 increases the connection area between the first base 21 and the support base 12, thereby improving the connection strength between the two.

[0041] Preferably, in this embodiment, multiple screw holes are provided on the flange 211, and multiple bolts pass through the screw holes and extend into the support base 12. Therefore, the flange 211 also facilitates the opening of screw holes and the connection of bolts.

[0042] Furthermore, the first base 21 has a first output hole 212, and the second base 22 has a second output hole 223. The first output hole 212 and the second output hole 223 are coaxially arranged. The third bearing assembly 51 includes a fifth bearing 511 and a sixth bearing 512. The fifth bearing 511 is connected to the inner wall of the second output hole 223, and the sixth bearing 512 is connected to the inner wall of the first output hole 212. In this way, both the fifth bearing 511 and the sixth bearing 512 are connected to the output base 20. The arrangement of the output base 20 allows for the construction of two fewer bearing chambers on the main housing 10, thereby reducing the processing difficulty of the main housing 10. Moreover, since the gear output assembly 50 is connected to the third bearing assembly 51, that is, the outer periphery of the gear output assembly 50 is fitted with the aforementioned fifth bearing 511 and sixth bearing 512, the stress distribution of the two bearings can make the connection between the gear output assembly 50 and the output base 20 more stable.

[0043] The gear output assembly 50 also includes a first limiting seat 53. The output shaft 52 passes through the fifth bearing 511 and the sixth bearing 512. A first output step 521 protrudes from the outer periphery of the output shaft 52, and a second output step 224 protrudes from the inner wall of the second output hole 223. Along the axial direction of the output shaft 52, one side of the fifth bearing 511 abuts against the first output step 521, and the other side abuts against the second output step 224. The first limiting seat 53 is sleeved on the outer periphery of the output shaft 52 and abuts against the side of the sixth bearing 512 away from the fifth bearing 511. Thus, the first output step 521 and the second output step 224 abut against the two sides of the fifth bearing 511 along the axial direction of the output shaft 52, thereby ensuring the stability of the fifth bearing 511 in the axial direction. The radially inner side of the fifth bearing 511 is sleeved on the outer periphery of the output shaft 52, and the radially outer side of the fifth bearing 511 abuts against the second seat 22, so the fifth bearing 511 is firmly limited.

[0044] Simultaneously, when the first output step 521 is formed on the outer side of the output shaft 52, a third output step 522 is also formed on the other side in the axial direction. The side of the sixth bearing 512 closest to the fifth bearing 511 abuts against the third output step 522. The first limiting seat 53 abuts against the end face of the sixth bearing 512 away from the third output step 522, thus completing the limiting of the sixth bearing 512.

[0045] The output shaft 52 is provided with an output gear 523 connected to the gear transmission assembly 40. Based on the above-mentioned bearing configuration, both ends of the output gear 523 are supported by bearings. The two bearings form a simply supported beam structure, which is compact and has better stress conditions. It is more suitable for its respective load conditions and has better noise and life performance.

[0046] The second housing 22 has a transmission hole 225. The gear transmission assembly 40 includes a transmission shaft 42. One end of the transmission shaft 42 is provided with a first transmission gear 44, which is connected to the gear input assembly 30. The other end of the transmission shaft 42 is provided with a second transmission gear 45, which meshes with the gear output assembly 50. One end of the transmission shaft 42 passes through the transmission hole 225 and is rotatably connected to the wall of the transmission hole 225. The other end of the transmission shaft 42 is rotatably connected to the inner wall of the transmission cavity 14 formed by the main housing 10. Therefore, both ends of the transmission shaft 42 are supported, enabling it to rotate stably. The first transmission gear 44 transmits the power from the input end to the transmission shaft 42, and the transmission shaft 42 then outputs the power to the output shaft 52 through the second transmission gear 45.

[0047] Furthermore, the first limiting seat 53 includes a first mating section 531 and a first limiting section 532, which are connected. Along the axial direction of the output shaft 52, the first mating section 531 is located outside the first output hole 212 and connected to the first seat body 21. At least a portion of the first limiting section 532 extends into the first output hole 212 and abuts against the sixth bearing 512. After the first limiting section 532 extends into the first output hole 212, it is located between the outer side of the output shaft 52 and the inner wall of the first output hole 212, and has a clearance fit with the outer wall of the output shaft 52 to prevent interference.

[0048] Specifically, in this embodiment, the first mating segment 531, like the flange 211 described above, extends in a radially outward direction, thereby improving the connection strength with the second seat 22.

[0049] The second base 22 has a transmission hole 225, and the support base 12 has a transmission groove 121. The transmission groove 121 is a circular groove and is coaxially arranged with the transmission hole 225. The third bearing 411 and the fourth bearing 412 are sleeved on both ends of the transmission shaft 42. The third bearing 411 is connected to the groove wall of the transmission groove 121, and the fourth bearing 412 is connected to the inner wall of the transmission hole 225. In this way, the transmission shaft 42 achieves stable transmission through the two bearings at the beginning and end. At the same time, the fourth bearing 412 is installed on the second base 22, that is, the bearing chamber required for the fourth bearing 412 is formed on the output base 20. The output base 20 further reduces the bearing chamber that would originally need to be constructed on the main housing 10.

[0050] It should be explained that the bearing housing described in this application refers to at least two steps that abut against both axial ends of the bearing, and there needs to be a groove between the two steps to accommodate the bearing. In the prior art, the bearing housing with the above structure is usually directly machined from the main housing 10.

[0051] Furthermore, a second transmission step 122 is constructed on the wall of the transmission groove 121, and a first transmission step 421 protrudes from the transmission shaft 42. Along the axial direction of the transmission shaft 42, one end of the third bearing 411 abuts against the second transmission step 122, and the other end abuts against the first transmission step 421. The gear transmission assembly 40 also includes a second limiting seat 43, which includes a second mating section 431 and a second limiting section 432. The second mating section 431 and the second limiting section 432 are connected. Along the axial direction of the transmission shaft 42, the second mating section 431 is located outside the transmission hole 225 and is connected to the first seat 21. The second limiting section 432 extends into the transmission hole 225 and abuts against the fourth bearing 412. Thus, the first transmission step 421 and the second transmission step 122 abut against the two sides of the third bearing 411 in the axial direction, thereby achieving the stable positioning of the third bearing 411. The second positioning segment 432 has a similar technical effect to the first positioning segment 532 mentioned above, and also abuts against one side of the fourth bearing 412 in the axial direction.

[0052] Furthermore, along the vertical direction, the gear transmission assembly 40 is disposed below the gear output assembly 50, and the second seat 22 extends above the gear transmission assembly 40, spaced apart from it. That is, the axes of the transmission shaft 42 and the output shaft 52 are parallel, but they are staggered in the vertical direction, and the second seat 22 avoids the gear transmission assembly 40, thereby reducing interference and ensuring the normal operation of each component.

[0053] Please see Figure 1 and Figure 5 The traction machine 100 includes a main housing 10, which includes a drive seat 11 and a support seat 12. The drive seat 11 and the support seat 12 are connected. The drive seat 11 has a drive cavity 13. The output seat 20 is detachably connected to the support seat 12. The gear input assembly 30 is connected to the drive seat 11 through a first bearing assembly 31. The gear transmission assembly 40 is connected to the gear input assembly 30. One end of the gear transmission assembly 40 is connected to the support seat 12 through a third bearing 411, and the other end is connected to the output seat 20 through a fourth bearing 412 (the third bearing 411 and the fourth bearing 412 cooperate to form a second bearing assembly 41). The gear output assembly 50 is connected to the gear transmission assembly 40. The third bearing assembly 51 is sleeved on the outside of the gear output assembly 50 and is connected to the output seat 20.

[0054] The gear input assembly 30 is rotatably connected to the drive seat 11 via the first bearing group 31, thereby ensuring the stability of the gear input assembly 30 during rotation. Similarly, both ends of the gear transmission assembly 40 are supported by the third bearing 411 and the fourth bearing 412 respectively, making its operation more stable when rotating and performing transmission. The output shaft 52 achieves stable rotation via the third bearing group 51. Specifically, the gear input assembly 30 includes a gear transmission input shaft with an input gear. The gear transmission input shaft is coaxially arranged with the drive shaft of the motor. The drive shaft portion of the motor is located in the drive cavity, and the other portion of the motor passes through the drive cavity and extends into the transmission cavity, forming the aforementioned gear transmission input shaft. One end of the gear transmission input shaft achieves stable rotation via the first bearing group 31, and the other end of the gear transmission input shaft forms a plug-in rotational fit with the transmission shaft via a positioning bearing, achieving stable rotation. Since the installation of each bearing requires the construction of a bearing chamber to limit its position, the aforementioned first bearing group 31, second bearing group 41, and third bearing group 51 necessitate the construction of multiple bearing chambers. This makes the molding of the main housing 10 difficult and the processing technology very complex. Therefore, by setting an output seat 20 that is detachably connected to the main housing 10, the fourth bearing 412 and the third bearing group 51 are both confined on the output seat 20. Thus, the output seat 20 undertakes the construction of at least three bearing chambers. Furthermore, because it is detachably connected to the main housing 10, both can be processed separately instead of being integrally cast, greatly reducing the processing difficulty, simplifying the internal structure and installation process of the main housing 10, reducing manufacturing and maintenance costs, and improving maintainability.

[0055] The drive base 11 has an end cap 112 at the end away from the support base 12. The end cap 112 has a first input hole 1121, and the drive base 11 has a second input hole 1111. The first input hole 1121 and the second input hole 1111 are coaxially arranged. The gear input assembly 30 includes an input shaft 32, and the first bearing assembly 31 includes a first input bearing 311 and a second input bearing 312. The first input bearing 311 and the second input bearing 312 are respectively sleeved on the outer periphery of the input shaft 32 and spaced apart. The first input bearing 311 is connected to the first input hole 1121, and the second input bearing 312 is connected to the second input hole 1111. This ensures the stable operation of the input shaft 32.

[0056] Specifically, in this embodiment, both the first input bearing 311 and the second input bearing 312 are configured as deep groove ball bearings.

[0057] Compared with the prior art, this utility model sets up an output seat 20 that is detachably connected to the main housing 10, so that the fourth bearing 412 and the third bearing assembly 51 are both located on the output seat 20. Therefore, the output seat 20 undertakes the structure of at least three bearing chambers. Since it is detachably connected to the main housing 10, the two can be processed separately without the need for integral casting, which greatly reduces the process difficulty, simplifies the internal structure and installation process of the main housing 10, reduces manufacturing and maintenance costs, and improves maintainability.

[0058] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A gear transmission mechanism, installed in the main housing (10) of a traction machine, the main housing (10) having a drive cavity (13) and a transmission cavity (14), wherein at least a portion of the gear transmission mechanism is disposed in the transmission cavity (14); Its features are, The gear transmission mechanism includes: Output seat (20) is used for detachable connection with main housing (10) and is located in transmission cavity (14); The gear transmission unit includes a gear input assembly (30), a gear transmission assembly (40), and a gear output assembly (50). The gear transmission assembly (40) is connected to the gear input assembly (30), and the gear output assembly (50) is connected to the gear transmission assembly (40). At least a portion of the gear transmission unit is mounted on the output seat (20) and assembled on the main housing (10) via the output seat (20).

2. The gear transmission mechanism according to claim 1, characterized in that, The gear output assembly (50) includes an output shaft (52) and an output gear (523). The output gear (523) is connected to the outer periphery of the output shaft (52) and meshes with the gear transmission assembly (40). The output gear (523) is at least partially housed in the output seat (20). Along the axial direction of the output shaft (52), the output shaft (52) has a first segment (524) and a second segment (525) located on both sides of the output gear (523). The first segment (524) and the second segment (525) are respectively connected to the output seat (20).

3. The gear transmission mechanism according to claim 2, characterized in that, The output base (20) includes a first base (21) and a second base (22). The first base (21) is used to connect with the main housing (10). The second base (22) protrudes toward the drive cavity (13) and forms a support structure for supporting the output shaft (52). A receiving cavity is formed between the second base (22) and the first base (21). The receiving cavity communicates with the transmission cavity (14) and is used to accommodate at least a portion of the structure of the output gear (523).

4. The gear transmission mechanism according to claim 3, characterized in that, The second seat (22) includes a connecting section (221) and a supporting section (222). The connecting section (221) is connected to the first seat (21). The supporting section (222) is connected to the end of the connecting section (221) away from the first seat (21). The supporting section (222) is arranged parallel to the first seat (21). The connecting section (221) is arranged at an angle to the first seat (21). The supporting section (222) is supported on the first section. The first seat (21) is supported on the second section.

5. The gear transmission mechanism according to claim 3, characterized in that, The outer periphery of the first seat (21) is provided with a flange (211), which extends radially outward away from the first seat (21) and is used to connect with the main housing (10) of the traction machine.

6. The gear transmission mechanism according to claim 3, characterized in that, The first base (21) has a first output hole (212), and the second base (22) has a second output hole (223). The first output hole (212) and the second output hole (223) are coaxially arranged. The gear output assembly includes a fifth bearing (511) and a sixth bearing (512). The fifth bearing (511) is connected to the inner wall of the second output hole (223), and the sixth bearing (512) is connected to the inner wall of the first output hole (212). The fifth bearing (511) and the sixth bearing (512) are respectively sleeved on the outer periphery of the output shaft (52).

7. The gear transmission mechanism according to claim 6, characterized in that, The outer periphery of the output shaft (52) is provided with a first output step (521), and the inner wall of the second output hole (223) is provided with a second output step (224). Along the axial direction of the output shaft (52), one side of the fifth bearing (511) abuts against the first output step (521), and the other side abuts against the second output step (224). The gear output assembly (50) further includes a first limiting seat (53), which is sleeved on the outer periphery of the output shaft (52) and abuts against the side of the sixth bearing (512) away from the fifth bearing (511).

8. The gear transmission mechanism according to claim 7, characterized in that, The first limiting seat (53) includes a first mating section (531) and a first limiting section (532). The first mating section (531) and the first limiting section (532) are connected. Along the axial direction of the output shaft (52), the first mating section (531) is located outside the first output hole (212) and is connected to the first seat body (21). At least a portion of the first limiting section (532) extends into the first output hole (212) and abuts against the sixth bearing (512).

9. The gear transmission mechanism according to any one of claims 3-7, characterized in that, The second seat (22) has a transmission hole (225). The gear transmission assembly (40) includes a transmission shaft (42). One end of the transmission shaft (42) is provided with a first transmission gear (44) that cooperates with the gear input assembly (30). The other end of the transmission shaft (42) is provided with a second transmission gear (45) that meshes with the output gear (523) in the gear output assembly (50). One end of the transmission shaft (42) passes through the transmission hole (225) and is rotatably connected to the hole wall of the transmission hole (225). The other end of the transmission shaft (42) is rotatably connected to the inner wall of the transmission cavity (14) formed by the main housing (10).

10. A traction machine, comprising the gear transmission mechanism as described in any one of claims 1-9, characterized in that, It also includes a main housing (10), which includes a drive seat (11) and a support seat (12). The drive seat (11) has a drive cavity (13), and the support seat (12) has a transmission cavity (14). Part of the gear input assembly is located in the drive cavity (13), and part is located in the transmission cavity (14). The gear transmission assembly (40) and the gear output assembly (50) are both located in the transmission cavity (14).

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