Hauling machine and elevator thereof

Abstract

The utility model relates to elevator technical field especially, and it is a kind of tractor and elevator thereof. Tractor includes: main box, drive shaft, transmission component, output shaft and brake component, drive shaft and transmission component are installed on main box, and transmission component is connected with drive shaft transmission;Output shaft, one end of output shaft is connected with transmission component transmission, and the other end of output shaft constitutes output end;Brake component is connected with main box, and can brake output end;Wherein, drive shaft and output shaft are coaxially arranged, along the axis direction of drive shaft, the orthographic projection of drive shaft and the orthographic projection of output shaft at least partially overlap. Its advantage lies in, drive shaft and output shaft overlap in axial direction can reduce the space occupied in the height direction of main box, therefore, the overall height of tractor is reduced, so as to reduce the volume of tractor, be favorable to realize the lightweight and miniaturization of tractor.

Description

TECHNICAL FIELD

[0001] The utility model relates to elevator technical field especially is related to a hoisting machine and elevator thereof. BACKGROUND

[0002] The elevator hoisting machine is the power equipment of elevator, and it is generally installed in the elevator machine room or elevator shaft to provide power for the operation of elevator. The hoisting machine usually includes a driving assembly, a transmission assembly, an output assembly and a brake assembly. The driving assembly serves as a power source to drive the transmission assembly to rotate. The transmission assembly transmits the driving force to the output assembly. The brake assembly is used for braking the output assembly. Specifically, the power source of the driving assembly usually adopts a motor drive. The motor changes the rotating speed and torque through the gear transmission assembly in the reduction box and then outputs power through the output shaft to drive the traction sheave to rotate. The friction force between the steel wire rope and the traction sheave groove is used to drive the car and the counterweight assembly to move up and down. The brake assembly brakes the output shaft to ensure the safe operation of the elevator.

[0003] In the prior art, the above-mentioned motors, reduction boxes and brakes with different functions are usually arranged in a decentralized manner. Each component is an independent structure, and the hoisting machine structure is formed by assembling. Specifically, for example, CN110040612B, the driving assembly (motor), transmission assembly (reduction machine) and brake assembly are independently arranged. The independent structures are connected to each other to form a structure layout that is spaced apart along the vertical direction of the installation. Specifically, in the reduction box, the transmission input shaft is in transmission connection with the motor drive shaft. The gear shaft is in transmission connection with the transmission input shaft through the first gear set. The first gear set transmits power to the output shaft through the output gear. The transmission input shaft and the drive shaft are coaxially connected. The gear shaft and the output shaft form a parallel structure with the transmission input shaft / drive shaft in three layers, which results in a large overall height of the hoisting machine and low space utilization. In addition, the reduction box includes at least three rotating shafts, i.e. the transmission input shaft, the gear shaft and the output shaft. In order to make the rotation of the rotating shaft more stable, at least two bearings need to be installed at both ends of the rotating shaft. In the reduction box body, at least six bearing chambers need to be provided on the inner wall of the reduction box body to facilitate the installation of the above-mentioned at least six bearings, which increases the process difficulty and makes the structure more complex. SUMMARY

[0004] In view of the above-mentioned technical problems of the hoisting machine, i.e. the large height of the hoisting machine due to the independent arrangement and decentralized layout of the reduction box, and the complex structure of the reduction box body due to the provision of at least six bearing chambers for the installation of three groups of rotating shaft bearings, the utility model provides a hoisting machine.

[0005] A traction machine includes: a main housing; a drive shaft mounted on the main housing; a transmission assembly mounted on the main housing and tractively connected to the drive shaft; an output shaft, one end of which is tractively connected to the transmission assembly, and the other end of which forms an output end; a braking assembly connected to the main housing and capable of braking the output end; along the axial direction of the drive shaft, the orthographic projection of the drive shaft and the orthographic projection of the output shaft at least partially overlap, and the drive shaft and the output shaft are rotatably connected; the main housing is connected to a support structure, and the structure in which the output shaft and the drive shaft are rotatably connected is supported by the support structure.

[0006] This configuration, with the drive shaft and output shaft overlapping axially, saves space along the height of the main housing, thus reducing the overall height of the traction machine and consequently its size, facilitating its lightweight and miniaturization. Furthermore, with the output shaft and drive shaft supported by a support structure, there is no need for additional bearing housings on the main housing to support the connection points of the output and drive shafts, simplifying the main housing structure and reducing the difficulty of its manufacturing process.

[0007] In one embodiment, one of the output shaft and the drive shaft has a positioning groove, and the end of the other shaft extends into the positioning groove and is rotatably connected to the positioning groove.

[0008] In one embodiment, the main housing is integrally formed with a drive cavity and a transmission cavity; a portion of the drive shaft is housed in the drive cavity, and another portion of the drive shaft extends through the drive cavity to the transmission cavity and forms a transmission input shaft, the transmission input shaft cooperates with the transmission assembly, and the transmission assembly is housed in the transmission cavity; at least a portion of the output shaft is located in the transmission cavity and rotatably cooperates with the transmission input shaft.

[0009] In one embodiment, the drive shaft and the output shaft are coaxially arranged.

[0010] In one embodiment, the traction machine further includes an output seat, the output seat including the support structure; the output seat includes a first seat body and a second seat body, the first seat body being connected to the main housing, the second seat body protruding toward the drive cavity and constituting the support structure, a receiving cavity being formed between the second seat body and the first seat body, the receiving cavity communicating with the transmission cavity and being used to accommodate at least a portion of the structure in the transmission assembly.

[0011] In one embodiment, the transmission assembly includes a first transmission gear, a transmission shaft, a second transmission gear, an input gear, and an output gear. The first transmission gear and the second transmission gear are both connected to the outer periphery of the transmission shaft and are coaxially arranged with the transmission shaft. The input gear is disposed on the transmission input shaft, and the first transmission gear is drivingly connected to the input gear. The output gear is disposed on the output shaft, and the second transmission gear is drivingly connected to the output gear. The output shaft is arranged vertically parallel to the transmission shaft, and the output gear is at least partially located in the accommodating cavity.

[0012] In one embodiment, the main housing includes an integrally formed drive seat and support seat. The drive seat has a drive cavity, and the support seat has a transmission cavity. A bearing seat is provided between the drive cavity and the transmission cavity, and the drive cavity and the transmission cavity are separated into two chambers by the bearing seat. A connecting hole is provided on the bearing seat to connect the drive cavity and the transmission cavity. The drive cavity has an opening on the side away from the transmission cavity, and an end cover is fitted to the opening. An output seat is fitted to the opening section on the side of the transmission cavity away from the drive cavity. The two ends of the drive shaft are rotatably connected to the end cover and the bearing seat respectively through a first bearing set. One end of the drive shaft is rotatably connected to the output shaft through a positioning bearing. The two ends of the output shaft are rotatably connected to the output seat and the braking assembly respectively through a third bearing set.

[0013] In one embodiment, the braking assembly includes a brake bracket, which is spaced apart from the main housing to form an accommodating space. The traction sheave of the traction machine is located within the accommodating space. A mounting seat is provided on the side of the main housing facing the brake bracket, and the mounting seat abuts against the brake bracket. A connector is provided between the brake bracket and the main housing, with one end of the connector connected to the main housing and the other end passing through the accommodating space and connected to the brake bracket.

[0014] In one embodiment, the mounting base has multiple positioning holes, and the brake bracket has multiple positioning elements inserted through it, with each positioning element corresponding to one of the positioning holes.

[0015] This utility model also provides an elevator, including the traction machine as described above.

[0016] Compared to existing technologies, this invention achieves a partial overlap between the drive shaft and output shaft in the axial direction, reducing the space occupied by the drive shaft and output shaft along the height of the main housing during arrangement. This reduces the overall height of the traction machine, thereby decreasing its size and facilitating its lightweight and miniaturization. The drive shaft and output shaft are connected using a shaft-in-shaft method, allowing part of the drive shaft to extend into the output shaft. The positioning bearing for fixing the drive shaft is also located inside the output shaft. This reduces the axial space occupied by the drive shaft and output shaft, and eliminates the need to machine one bearing chamber on the main housing, achieving both miniaturization and ease of manufacturing. By providing an output seat detachably connected to the main housing, the fourth bearing and the third bearing assembly are both confined to the output seat. Therefore, the output seat undertakes the structure of at least three bearing chambers. Because it is detachably connected to the main housing, both can be machined separately instead of being integrally cast, significantly reducing manufacturing difficulty, simplifying the internal structure and installation process of the main housing, lowering manufacturing and maintenance costs, and improving maintainability. Attached Figure Description

[0017] Figure 1 A cross-sectional view of one embodiment of the traction machine provided by this utility model;

[0018] Figure 2 A side view of one embodiment of the traction machine provided by this utility model;

[0019] Figure 3 A top view of one embodiment of the traction machine provided by this utility model;

[0020] Figure 4 A schematic diagram of one embodiment of the drive shaft of the traction machine provided by this utility model;

[0021] Figure 5 A schematic diagram of one embodiment of the output shaft of the traction machine provided by this utility model;

[0022] Figure 6 A cross-sectional view of one embodiment of the drive seat and support seat of the traction machine provided by this utility model;

[0023] Figure 7 for Figure 1 Enlarged view of section A in the image;

[0024] Figure 8 A cross-sectional view of one embodiment of the output seat of the traction machine provided by this utility model;

[0025] Figure 9 An exploded view of one embodiment of the traction machine provided by this utility model;

[0026] Figure 10 A front view of one embodiment of the output seat of the traction machine provided by this utility model;

[0027] Figure 11 A schematic diagram of one embodiment of the rope guide bar of the traction machine provided by this utility model;

[0028] Figure 12 for Figure 1 A magnified view of section B in the image.

[0029] The symbols in the diagram represent the following meanings:

[0030] 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. Second connecting ear; 15. Mounting base; 16. Output base; 161. First base body; 1611. Flanged edge; 1612. First output hole; 162. Second base body; 1621. Connecting section; 1622. Support section; 162 3. Second output hole; 1624. Second output step; 1625. Transmission hole; 18. Transmission cavity; 19. Bearing seat; 20. Braking assembly; 21. Brake bracket; 211. First connecting lug; 2111. First connecting hole; 213. Second fixing hole; 22. Brake; 221. Fixing member; 222. First fixing hole; 223. Moving plate; 224. Stationary plate; 23. Rope guide bar; 231. Mounting section; 2311. Mounting hole; 232. Rope guide section; 24. Connecting... Components: 30. Drive assembly; 311. First bearing; 312. Second bearing; 32. Drive shaft; 321. Positioning step; 322. Drive section; 323. Transmission section; 3231. Transmission input shaft; 325. Input gear; 33. Stator; 34. Rotor; 40. Transmission assembly; 411. Third bearing; 412. Fourth bearing; 42. Transmission shaft; 421. First transmission step; 43. Second limiting seat; 431. Second mating section; 432. Second limiting section; 44. First transmission gear; 45. Second transmission gear; 50. Output assembly; 511. Fifth bearing; 512. Sixth bearing; 52. Output shaft; 521. First output step; 522. Third output step; 523. Positioning groove; 524. Positioning bearing; 525. First connecting section; 526. Second connecting section; 527. Third connecting section; 53. First limiting seat; 531. First mating section; 532. First limiting section; 54. Output gear; 60. Traction sheave. Detailed Implementation

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] Please participate Figures 1-11This utility model provides a traction machine 100 in which part of the drive shaft 32 extends into the interior of the output shaft 52, thereby reducing the axial space occupied by the drive shaft 32 and the output shaft 52, as well as saving the height space occupied, which is conducive to the traction machine 100 to achieve lightweight and miniaturization.

[0037] Please see Figures 1-3 The traction machine 100 includes a main housing 10, a drive shaft 32, a transmission assembly 40, an output shaft 52, and a braking assembly 20. The drive shaft 32 is mounted on the main housing 10, and the transmission assembly 40 is mounted on the main housing 10 and is connected to the drive shaft 32 in a driving connection. One end of the output shaft 52 is connected to the transmission assembly 40 in a driving connection, and the other end of the output shaft 52 constitutes an output end. The braking assembly 20 is connected to the main housing 10 and brakes the output end. Along the axial direction of the drive shaft 32, the orthographic projection of the drive shaft 32 and the orthographic projection of the output shaft 52 at least partially overlap, and the drive shaft 32 and the output shaft 52 are rotatably connected.

[0038] The main housing 10 is connected to a support structure, and the output shaft 52 and drive shaft 32 are rotatably connected and supported by the support structure. Please refer to [link to relevant documentation]. Figure 1 The orthographic projection of the drive shaft 32 is defined as the first projection, and the orthographic projection of the output shaft 52 is defined as the second projection. The first projection and the second projection overlap at least partially.

[0039] The drive shaft 32 and the output shaft 52 can be plugged into each other, with one extending into the other and overlapping axially. This reduces the height space occupied by the drive shaft 32 and the output shaft 52 along the main housing, thus helping to reduce the overall height of the traction machine 100 and its volume, which is beneficial for achieving lightweighting and miniaturization of the traction machine 100. Furthermore, since the output shaft 52 and the drive shaft 32 are supported by a support structure, there is no need to additionally create bearing chambers on the main housing 10 to support the connection ends of the output shaft 52 and the drive shaft 32 for bearing installation. This saves the need for at least two bearing chambers, simplifies the manufacturing process of the main housing 10, and simplifies the structure.

[0040] Preferably, the output shaft 52 and the drive shaft 32 are coaxially arranged. One of the output shaft 52 and the drive shaft 32 has a positioning groove 523, and the end of the other shaft extends into the positioning groove 523 and is rotatably connected to the positioning groove 523. In this way, the output shaft 52 and the drive shaft 32 can support each other, improving the rotational stability of the drive shaft 32 and the output shaft 52.

[0041] Preferably, please refer to Figure 5The output shaft 52 has a positioning groove 523 at its end, and a positioning bearing 524 is provided in the positioning groove 523. The positioning bearing 524 is sleeved on the end of the drive shaft 32, so that the relative rotation between the drive shaft 32 and the output shaft 52 is smoother and the limiting effect on the drive shaft 32 is improved.

[0042] In this embodiment, since the drive shaft 32, transmission shaft 42, and output shaft 52 include at least three rotating shafts, at least two bearings are fitted on the outer periphery of each rotating shaft to ensure rotational stability. This arrangement moves the positioning bearing 524, originally located between the drive shaft 32 and the inner wall of the main housing 10, to between the drive shaft 32 and the output shaft 52. Therefore, one bearing chamber can be removed from the main housing 10, reducing the processing difficulty and manufacturing cost. Furthermore, the positioning bearing 524 makes the rotation of the drive shaft 32 more stable, greatly avoiding overall machine vibration and noise caused by gear meshing.

[0043] In other embodiments, a positioning groove 523 can be formed at the end of the drive shaft 32, and the end of the output shaft 52 can be inserted into the positioning groove 523, which can also achieve the above-mentioned technical effect, and is not limited to the embodiment in which the drive shaft 32 extends into the output shaft 52.

[0044] like Figure 4 As shown, a positioning step 321 is constructed on the outer periphery of the end of the drive shaft 32 near the output shaft 52. Along the axial direction of the drive shaft 32, the positioning step 321 abuts against one side of the positioning bearing 524, and the other side of the positioning bearing 524 abuts against the bottom of the positioning groove 523. In this way, both end faces of the positioning bearing 524 in the axial direction are limited, further fixing the position of the positioning bearing 524 and reducing its wobble.

[0045] A fifth bearing 511 is fitted on the outer periphery of the end of the output shaft 52 near the drive shaft 32. The fifth bearing 511 is located radially outside the positioning bearing 524 and is coaxially arranged with the positioning bearing 524. In this way, the positioning bearing 524 and the fifth bearing 511 can share the stress in the radial direction, making the structure more compact and preventing stress imbalance.

[0046] The main housing 10 is integrally formed with a drive cavity 13 and a transmission cavity 18. A portion of the drive shaft 32 is housed in the drive cavity 13, and another portion extends through the drive cavity 13 to the transmission cavity 18, forming a transmission input shaft 3231. The transmission input shaft 3231 cooperates with the transmission assembly 40, which is housed in the transmission cavity 18. At least a portion of the output shaft 52 is located in the transmission cavity 18 and rotatably engages with the transmission input shaft 3231. The transmission input shaft 3231 is used for transmission connection with the transmission assembly 40, and an input gear 325 is provided on the outer periphery of the transmission input shaft 3231 for transmission connection with the transmission assembly 40. The output shaft 52 is provided with an output gear 54 for transmission connection with the transmission assembly 40.

[0047] Please see Figure 6 The main housing 10 includes an integrally connected drive base 11 and support base 12. The support base 12 is detachably connected to an output base 16, and a portion of the output base 16 forms the aforementioned support structure. The drive base 11 has an internal drive cavity 13, and the support base 12 has an internal transmission cavity 18. The output base 16 can be connected to the output assembly 50 and then assembled into the support base 12. A bearing seat 19 is provided between the drive cavity 13 and the transmission cavity 18, separating them into two chambers. The bearing seat 19 also has a connecting hole that connects the drive cavity 13 and the transmission cavity 18.

[0048] Please see Figure 4 The outer periphery of the drive shaft 32 is provided with a stator 33 and a rotor 34. The stator 33 is installed in the drive cavity 13 and connected to the drive base 11. When the stator 33 is energized, it can drive the rotor 34 to rotate. The rotor 34 is connected to the drive shaft 32, thereby driving the drive shaft 32 to rotate.

[0049] The transmission assembly 40 includes a transmission shaft 42 and a first transmission gear 44. The first transmission gear 44 is sleeved on the outer periphery of the transmission shaft 42 and meshes with the input gear 325 on the drive shaft 32. The transmission shaft 42 is meshed with the output gear 54 on the output shaft 52 through a second transmission gear 45, and then drives the traction sheave 60 to rotate through the output shaft 52. Along the radial direction of the output shaft 52, the output shaft 52 includes a first connecting section 525, a second connecting section 526, and a third connecting section 527 connected in sequence. The outer diameter of the second connecting section 526 is larger than that of the first connecting section 525 and the third connecting section 527 to form a first output step 521 and a third output step 522.

[0050] The fifth bearing 511 is sleeved on the outer periphery of the first connecting section 525 and abuts against the first output step 521. The outer periphery of the second connecting section 526 is connected to the driven output gear 54, which is connected to the transmission assembly 40. The outer periphery of the third connecting section 527 is sleeved with the sixth bearing 512, which abuts against the main housing 10, and the axial side of the sixth bearing 512 abuts against the third output step 522.

[0051] Thus, since the outer diameter of the second connecting section 526 is larger than that of the first connecting section 525 and the third connecting section 527, a natural drop is formed on the outer periphery, thereby forming the first output step 521 and the third output step 522. The first output step 521 is used to fix the fifth bearing 511 and reduce the axial movement of the fifth bearing 511, and the third output step 522 is used to fix the sixth bearing 512 and reduce the axial movement of the sixth bearing 512. The output gear 54 is connected to the second connecting section 526 and responds to the power transmitted by the transmission assembly 40, driving the entire output shaft 52 to rotate, thereby driving the traction sheave 60 to rotate.

[0052] A positioning groove 523 is formed in the first connecting section 525, and a connecting pin is connected to the outer side of the third connecting section 527. The connecting pin is engaged with the traction sheave 60. In this way, the connection strength between the third connecting section 527 and the traction sheave 60 is high, and the engagement between the connecting pin and the traction sheave 60 can bear a larger load.

[0053] In other embodiments, two connecting pins may be added to further enhance the connection strength between the third connecting segment 527 and the traction sheave 60.

[0054] The drive shaft 32 includes a drive section 322 and a transmission section 323. The drive section 322 is located within the drive cavity 13, and both the first bearing 311 and the second bearing 312 are connected to the drive section 322. The transmission section 323 is integrally formed with the drive section 322, extending out of the drive cavity 13 and into the transmission cavity 18. The transmission section 323 is connected to the transmission assembly 40. Thus, the drive section 322 is specifically used for limiting the stable rotation of the drive shaft 32, while the transmission section 323, including the transmission input shaft 3231, is responsible for transmitting power.

[0055] Please see Figure 7 The drive shaft 32 is connected to the drive seat 11 via the first bearing 311 and the second bearing 312. The transmission assembly 40 is connected to the drive shaft 32. One end of the transmission assembly 40 is connected to the support seat 12 via the third bearing 411, and the other end is connected to the output seat 16 via the fourth bearing 412. The output shaft 52 is connected to the transmission assembly 40. The outer side of the output shaft 52 is fitted with the fifth bearing 511 and the sixth bearing 512, and is connected to the output seat 16 via the fifth bearing 511 and the sixth bearing 512.

[0056] Furthermore, the end of the output shaft 52 connected to the transmission input shaft 3231 is supported by the support structure. Thus, the support structure can be used to support both the output shaft 52 and the transmission input shaft 3231.

[0057] The drive cavity 13 has an opening on the side away from the transmission cavity 18, and an end cap 112 fits into the opening. An output seat 16 fits into the opening on the side of the transmission cavity 18 away from the drive cavity 13. Since the installation of each bearing requires the construction of a bearing chamber to limit its position, the arrangement of the six bearings necessitates the construction of multiple bearing chambers, making the molding of the main housing 10 difficult and the processing technology very complex. Therefore, by providing an output seat 16 detachably connected to the main housing 10, the fourth bearing 412, as well as the fifth bearing 511 and the sixth bearing 512, are all confined to the output seat 16. Thus, the output seat 16 undertakes the structural function of at least three bearing chambers and provides support for the connection between the drive shaft 32 and the output shaft 52, enhancing the connection stability between them. 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.

[0058] Please see Figure 8 , Figure 10 and Figure 12 The output base 16 includes a first base 161 and a second base 162. The first base 161 is connected to the main housing 10. The second base 162 includes a connecting section 1621 and a supporting section 1622. The connecting section 1621 is connected to the first base 161, and the supporting section 1622 is connected to the end of the connecting section 1621 away from the first base 161, forming an angled structure. Preferably, the supporting section 1622 is arranged parallel to the first base 161. A third bearing 411 group is supported on both the first base 161 and the second base 162. Thus, the third bearing 411 group includes at least two bearings, and the two bearings are respectively connected to the spaced-apart first base 161 and second base 162, resulting in more even stress distribution and higher structural strength of the output base 16.

[0059] The second seat 162 protrudes toward the drive cavity 13 and forms a support structure. The end of the output shaft 52 connected to the transmission input shaft 3231 is supported on the support structure.

[0060] A receiving cavity is formed between the first seat 161 and the second seat 162. The receiving cavity communicates with the transmission cavity 18 and is used to house at least a portion of the structure in the transmission assembly 40. This makes the structure of the traction machine 100 more compact and helps to achieve miniaturization of the traction machine 100.

[0061] Specifically, the first seat 161 and / or the second seat 162 are provided with multiple reinforcing ribs, at least multiple reinforcing ribs extend outward in the radial direction, at least multiple reinforcing ribs extend in the circumferential direction, and the multiple reinforcing ribs are interwoven to form a reinforcing structure that improves the structural strength of the output seat 16.

[0062] In this embodiment, the third bearing group 411 includes a fifth bearing 511 and a sixth bearing 512. The fifth bearing 511 is connected to the second housing 162, and the sixth bearing 512 is connected to the first housing 161. Preferably, in this embodiment, the fifth bearing 511 and the sixth bearing 512 are tapered roller bearings.

[0063] A flange 1611 is provided on the outer periphery of the first base 161. The flange 1611 extends radially outward away from the first base 161 and is connected to the support base 12. In this way, the flange 1611 increases the connection area between the first base 161 and the support base 12, thereby improving the connection strength between the two.

[0064] Preferably, in this embodiment, multiple screw holes are provided on the flange 1611, and multiple bolts pass through the screw holes and extend into the support base 12. Therefore, the flange 1611 facilitates the opening of screw holes and the connection of bolts.

[0065] Furthermore, the first base 161 has a first output hole 1612, and the second base 162 has a second output hole 1623. The first output hole 1612 and the second output hole 1623 are coaxially arranged. The third bearing 411 group 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 1623, and the sixth bearing 512 is connected to the inner wall of the first output hole 1612. In this way, both the fifth bearing 511 and the sixth bearing 512 are connected to the output base 16. The arrangement of the output base 16 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 output component 50 is connected to the third bearing 411 group, that is, the outer periphery of the output component 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 output component 50 and the output base 16 more stable.

[0066] The output assembly 50 also includes a first limiting seat 53, and the output shaft 52 passes through the fifth bearing 511 and the sixth bearing 512. 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 1623 is provided with a second output step 1624. 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 1624. 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 1624 respectively abut against the fifth bearing 511 on both sides along the axial direction of the output shaft 52, thereby ensuring the stability of the fifth bearing 511 in the axial direction. The radial inner side of the fifth bearing 511 is sleeved on the outer circumference of the output shaft 52, and the radial outer side of the fifth bearing 511 abuts against the second seat 162, so the fifth bearing 511 is firmly limited.

[0067] 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.

[0068] Furthermore, please see Figure 1 , Figure 8 , Figure 10 and Figure 11 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 1612 and is connected to the first seat body 161. At least a portion of the first limiting section 532 extends into the first output hole 1612 and abuts against the sixth bearing 512. After the first limiting section 532 extends into the first output hole 1612, it is located between the outer side of the output shaft 52 and the inner wall of the first output hole 1612, and has a clearance fit with the outer wall of the output shaft 52 to prevent interference.

[0069] Specifically, in this embodiment, the first mating segment 531, like the flange 1611 described above, extends in a radially outward direction, thereby improving the connection strength with the second seat 162.

[0070] The second housing 162 has a transmission hole 1625, and the transmission cavity 18 has a transmission groove 121 on the side near the drive cavity 13. The transmission groove 121 is a circular groove and is coaxially arranged with the transmission hole 1625. The transmission assembly 40 includes a transmission shaft 42, a third bearing 411 and a fourth bearing 412 sleeved at 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 1625. In this way, the transmission shaft 42 achieves stable transmission through the two bearings at the beginning and end, and at the same time, the fourth bearing 412 is installed on the second housing 162. That is, the bearing chamber required for the fourth bearing 412 is formed on the output housing 16, which reduces the number of bearing chambers that would originally need to be constructed on the main housing 10.

[0071] 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.

[0072] 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 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 1625 and is connected to the first seat 161. The second limiting section 432 extends into the transmission hole 1625 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.

[0073] Furthermore, along the vertical direction, the drive shaft 42 is positioned below the output shaft 52, and the second base 162 extends above the drive shaft 42, forming a vertically spaced arrangement with the drive shaft 42, and a horizontally spaced arrangement with the first drive gear 44 and the second drive gear 45. In other words, the axes of the drive shaft 42 and the output shaft 52 are parallel, but they are staggered in the vertical direction, and the second base 162 avoids interference with the transmission assembly 40, thereby reducing interference and ensuring the normal operation of each component.

[0074] End cap 112 is connected to the end of drive seat 11 away from support seat 12. End cap 112 has a first input hole 1121, and drive cavity 13 has a second input hole 1111 on the side away from end cap 112. The first input hole 1121 and the second input hole 1111 are coaxially arranged. Second bearing 312 is connected to first input hole 1121, and first bearing 311 is connected to second input hole 1111. This ensures stable operation of the input shaft. Specifically, in this embodiment, both first bearing 311 and second bearing 312 are deep groove ball bearings.

[0075] The braking assembly 20 includes a brake bracket 21, which is spaced apart from the main housing 10 to form an accommodating space. The traction sheave 60 of the traction machine 100 is located within this accommodating space. A mounting base 15 is provided on the side of the main housing 10 facing the brake bracket 21, and the mounting base 15 abuts against the brake bracket 21. A connecting member 24 is provided between the brake bracket 21 and the main housing 10, with one end connected to the main housing 10 and the other end connected to the brake bracket 21. One end of the output assembly 50 is rotatably connected to the main housing 10, and the other end is rotatably connected to the brake bracket 21. The traction sheave 60 is connected to the output assembly 50 and is located between the main housing 10 and the brake bracket 21. Thus, the two ends of the output shaft are supported on the main housing 10 and the brake bracket 21, respectively. Therefore, the stress load on the output shaft can be distributed between the brake bracket 21 and the main housing 10, thereby improving the overall structural strength of the traction machine 100. Furthermore, the connection of connector 24 forms an integral frame structure between brake bracket 21 and main housing 10, providing multiple stress transmission and distribution paths to further improve the overall load capacity of traction machine 100. Mounting base 15 abuts against brake bracket 21. In this way, the mutual support effect and structural strength between brake bracket 21 and main housing 10 can be further improved.

[0076] Furthermore, the mounting base 15 has multiple positioning holes, and the brake bracket 21 has multiple positioning elements inserted through it. Each positioning element is inserted into a corresponding positioning hole to improve the connection strength between the brake bracket 21 and the mounting base 15.

[0077] Specifically, the positioning holes are set as screw holes, and multiple bolts are used for the positioning components, each corresponding to a screw hole and inserted into it. This facilitates the connection between the main housing 10 and the brake bracket 21. The fit between the bolts and screw holes provides a proper fit between the main housing 10 and the brake bracket 21, making the two brackets more tightly connected.

[0078] In this embodiment, the mounting base 15 is integrally formed with the main housing 10, while the bolts are connected to the brake bracket 21. In other embodiments, the positions of the mounting base 15 and the bolts can be interchanged without affecting their connection.

[0079] Specifically, there are at least two connectors 24, which are arranged in parallel and connected to the lateral sides of the brake bracket 21 respectively. The two connectors 24 located on both sides of the brake bracket 21 help to transmit stress on both sides of the brake bracket 21 and the main housing 10. Compared with the solution of one connector 24, this further improves the structural strength of the brake bracket 21 and the main housing 10, and makes the overall structural load-bearing more balanced, reducing stress bias.

[0080] For example, the connector 24 is configured as a cylindrical structure, which is easy to process, has high structural strength, and is easy to assemble.

[0081] Understandably, in other embodiments, the connector 24 may be increased to two, three, or four, and is not limited to the above-described embodiment with two connectors 24. Multiple connectors 24 may all be located on the top of the brake bracket 21 and the main housing 10, or they may be adjusted to connect to the two lateral sides of the brake bracket 21 and the main housing 10. Preferably, all the connectors 24 are arranged in parallel to ensure more balanced force distribution.

[0082] Furthermore, the brake bracket 21 has first connecting ears 211 on both sides of its lateral direction, and each first connecting ear 211 has a first connecting hole 2111. The main housing 10 has second connecting ears 14 on both sides of its lateral direction, and each second connecting ear 14 has a second connecting hole. One end of the connector 24 passes through the first connecting hole 2111, and the other end passes through the second connecting hole. Thus, the arrangement of the first connecting ears 211 and the second connecting ears 14 facilitates the assembly of the connector 24, and eliminates the need for the first connecting holes 2111 and the second connecting holes to be formed on the brake bracket 21 and the main housing 10. This avoids the impact of the opening structure on the structural strength of the brake bracket 21 and the main housing 10.

[0083] A traction rope is wound around the traction sheave 60. The traction rope is used to connect to the elevator car. As the traction sheave 60 rotates, the traction rope can drive the elevator car up or down. Please refer to [link / reference]. Figure 11 To prevent the traction rope from falling off the traction sheave 60, a rope-stopping rod 23 is fitted onto the connector 24. The rope-stopping rod 23 includes an mounting section 231 and a rope-stopping section 232. One end of the mounting section 231 is connected to the connector 24, and the other end is connected to the rope-stopping section 232. The rope-stopping section 232 is angled relative to the mounting section 231 and extends along the axial direction of the traction sheave 60. Thus, the mounting section 231 is used to connect with the connector 24, and the rope-stopping section 232 extends along the axial direction of the traction sheave 60, therefore it is located radially outward of the traction rope, which can prevent the traction rope from falling off in the radially outward direction.

[0084] Specifically, in this embodiment, the mounting section 231 and the extension section are arranged perpendicularly, that is, the mounting section 231 extends in a direction perpendicular to the axial direction of the traction wheel 60, while the extension section is parallel to the axis of the traction wheel 60.

[0085] Preferably, both connectors 24 are provided with rope-stopping rods 23 to improve the stopping effect on the traction rope.

[0086] Furthermore, the mounting section 231 has a mounting hole 2311, through which the connector 24 passes and abuts against the side of the mounting section 231 facing away from the main housing 10, pressing the mounting section 231 tightly against the main housing 10. Thus, the mounting hole 2311 allows the mounting section 231 to be fitted over the outside of the connector 24, thereby preventing the rope-retaining rod 23 from detaching from the connector 24.

[0087] In this embodiment, a nut is provided on the second connecting lug 14, and the nut is coaxially arranged with the second connecting hole. The connector 24 passes through the nut and extends into the second connecting hole, and the connector 24 is threadedly engaged with both the nut and the second connecting hole. The other end of the connector 24 is also threadedly engaged with the first connecting hole 2111 on the first connecting lug 211, or it passes through the first connecting hole 2111 and a nut is fitted on the other end of the connector 24 to fix the connector 24.

[0088] Furthermore, along the vertical direction, the connector 24 is disposed on one side of the main housing 10 and the brake bracket 21, while the mounting base 15 and bolts are disposed on the other side of the main housing 10 and the brake bracket 21. Thus, the connector 24 provides reinforcement on one side, while the mounting base 15 and bolts provide reinforcement on the other side. Therefore, the above structure can improve the structural strength of the traction machine 100 from multiple directions.

[0089] The traction machine 100 also includes a brake 22 and multiple fixing members 221. The brake 22 has multiple first fixing holes 222, and the brake bracket 21 has multiple second fixing holes 213. Each first fixing hole 222 is coaxially arranged with a corresponding second fixing hole 213. The multiple fixing members 221 are respectively inserted into the corresponding first fixing hole 222 and second fixing hole 213. In this way, the connection strength between the brake 22 and the brake bracket 21 is high.

[0090] The brake 22 includes a movable plate 223 and a stationary plate 224. The stationary plate 224 contains an electromagnetic coil and a spring assembly, and remains in a fixed position. When the traction machine 100 rotates, the movable plate 223 is attracted to the stationary plate 224, thereby releasing the brake disc inside the brake 22 and allowing the output component 50 to operate normally. When the traction machine 100 needs to brake, the coil inside the stationary plate 224 is de-energized and loses its magnetism. At this time, the movable plate 223 is pushed forward by the spring assembly inside the stationary plate 224, pressing against the brake disc, thereby achieving the braking action.

[0091] This utility model also provides an assembly method for a traction machine 100, including the traction machine 100 as described above. The assembly method includes: connecting the output component 50 to the output base 16; and connecting the output base 16 to the support base 12. By first connecting the output component 50 to the output base 16 and then installing the whole assembly into the main housing 10, the assembly process is greatly simplified. The output component 50 and the output base 16 can be assembled separately, which is less difficult.

[0092] Furthermore, after the output assembly 50 and the output base 16 are installed, the assembly method also includes: inserting bolts into the mounting base 15; and connecting both ends of the connector 24 to the support base 12 and the braking assembly 20, respectively.

[0093] Thus, the matching of the bolts and the mounting base 15 allows the brake assembly 20 and the main housing 10 to be pre-positioned, and then the brake bracket 21 and the main housing 10 are connected by the connector 24 to make the assembly of the two more tight.

[0094] The overall assembly process of the traction machine 100 is as follows: First, install the stator 33 into the main housing 10, then assemble the rotor 34, and then install the end cover 112 and tighten it with screws. Next, place the main housing 10 vertically with its drive seat 11 facing downwards and install the drive assembly 30 and sealing ring into the main housing 10. Then, insert the output shaft into the output seat 16, ensuring that the positioning bearing 524 at the end of the drive shaft 32 is accurately installed inside the output shaft 52. Next, install the O-ring seal on the outside of the output seat 16, and install the assembly connecting the output shaft 52 and the output seat 16 into the main housing as shown in the figure. Then, install the first and second limiting parts and install the sealing ring. Next, install the traction sheave 60 onto the output shaft 52, and then install the fifth bearing 511 and the sixth bearing 512 onto the output shaft 52. Finally, install the connecting piece 24 into the main housing 10. Adjust the positions of the two connectors 24, then install the brake bracket 21 and connect it to the bottom of the main housing 10 with fastening screws. Then adjust the two connectors 24 to connect the brake bracket 21 to the top of the main housing 10.

[0095] Compared with the prior art, this utility model can shorten the space occupied by the drive shaft 32 and the output shaft 52 in terms of the height of the main housing 10 by keeping the drive shaft 32 and the output shaft 52 coaxially arranged. By using the drive shaft 32 and the output shaft 52 with the shaft in the middle, part of the drive shaft 32 extends into the interior of the output shaft 52, and the positioning bearing 524 for fixing the drive shaft 32 is also set inside the output shaft 52. This not only reduces the axial space occupied by the drive shaft 32 and the output shaft 52, but also reduces the machining of one bearing chamber on the main housing 10, thereby realizing the miniaturization of the traction machine 100 and the convenience of machining. By setting an output seat 16 that is detachably connected to the main housing 10, the fourth bearing 412 and the third bearing 411 are both confined to the output seat 16. Therefore, the output seat 16 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.

[0096] 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.

[0097] 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 traction machine, characterized in that, include: Main box (10); The drive shaft (32) is mounted on the main housing (10). The transmission assembly (40) is mounted on the main housing (10) and is connected to the drive shaft (32) in a transmission manner; Output shaft (52), one end of which is connected to the transmission assembly (40) and the other end of which constitutes an output end; A braking assembly (20) is connected to the main housing (10) and is capable of braking the output end; Along the axial direction of the drive shaft (32), the orthographic projection of the drive shaft (32) at least partially overlaps with the orthographic projection of the output shaft (52), and the drive shaft (32) and the output shaft (52) are rotatably connected; The main housing (10) is connected to a support structure, and the output shaft (52) and the drive shaft (32) are rotatably connected and supported by the support structure.

2. The traction machine according to claim 1, characterized in that, One of the output shaft (52) and the drive shaft (32) is provided with a positioning groove (523), and the end of the other extends into the positioning groove (523) and is rotatably connected to the positioning groove (523).

3. The traction machine according to claim 1, characterized in that, The main housing (10) is integrally formed with a drive cavity (13) and a transmission cavity (18). A portion of the drive shaft (32) is housed in the drive cavity (13), and another portion of the drive shaft (32) extends through the drive cavity (13) to the transmission cavity (18) and forms a transmission input shaft (3231). The transmission input shaft (3231) cooperates with the transmission assembly (40), which is housed in the transmission cavity (18). At least a portion of the output shaft (52) is located in the transmission cavity (18) and rotates with the transmission input shaft (3231).

4. The traction machine according to claim 1, characterized in that, The drive shaft (32) and the output shaft (52) are coaxially arranged.

5. The traction machine according to claim 3, characterized in that, The traction machine also includes an output seat (16), which includes a first seat body (161) and a second seat body (162). The first seat body (161) is connected to the main housing (10), and the second seat body (162) protrudes toward the drive cavity (13) and constitutes the support structure. A receiving cavity is formed between the second seat body (162) and the first seat body (161). The receiving cavity is connected to the transmission cavity (18) and is used to accommodate at least a portion of the structure in the transmission assembly (40).

6. The traction machine according to claim 5, characterized in that, The transmission assembly (40) includes a first transmission gear (44), a transmission shaft (42), a second transmission gear (45), an input gear (325), and an output gear (54). The first transmission gear (44) and the second transmission gear (45) are both connected to the outer periphery of the transmission shaft (42) and are coaxially arranged with the transmission shaft (42). The input gear (325) is arranged on the transmission input shaft (3231). The first transmission gear (44) is connected to the input gear (325) in a transmission connection. The output gear (54) is arranged on the output shaft (52). The second transmission gear (45) is connected to the output gear (54) in a transmission connection. The output shaft (52) is arranged parallel to the transmission shaft (42) vertically, and the output gear (54) is at least partially located in the accommodating cavity.

7. The traction machine according to claim 6, characterized in that, The main housing (10) includes an integrally formed drive seat (11) and support seat (12). A drive cavity (13) is formed in the drive seat (11), and a transmission cavity (18) is formed in the support seat (12). A bearing seat (19) is provided between the drive cavity (13) and the transmission cavity (18). The drive cavity (13) and the transmission cavity (18) are separated into two chambers by the bearing seat (19). A connecting hole is provided on the bearing seat (19) to connect the drive cavity (13) and the transmission cavity (18). The drive cavity (13) has an opening on the side away from the transmission cavity (18), and the opening is fitted with an end cap (112). The opening end of the transmission cavity (18) on the side away from the drive cavity (13) is fitted with an output seat (16). The two ends of the drive shaft (32) are rotatably connected to the end cover (112) and the bearing seat (19) respectively through the first bearing group (31). One end of the drive shaft (32) is rotatably connected to the output shaft (52) through the positioning bearing (524). The two ends of the output shaft (52) are rotatably connected to the output seat (16) and the braking assembly (20) respectively through the third bearing group (51).

8. The traction machine according to claim 1, characterized in that, The braking assembly (20) includes a brake bracket (21), which is spaced apart from the main housing (10) to form an accommodating space. The traction sheave (60) of the traction machine is located in the accommodating space. A mounting seat (15) is provided on the side of the main housing (10) facing the brake bracket (21). The mounting seat (15) abuts against the brake bracket (21). A connector (24) is provided between the brake bracket (21) and the main housing (10). One end of the connector (24) is connected to the main housing (10), and the other end passes through the accommodating space and is connected to the brake bracket (21).

9. The traction machine according to claim 8, characterized in that, The mounting base (15) has multiple positioning holes, and the brake bracket (21) has multiple positioning elements inserted through it, with each positioning element corresponding to one of the positioning holes.

10. An elevator, characterized in that, Including the traction machine as described in any one of claims 1-9.

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