An all-in-one traction machine

Abstract

This utility model relates to the field of elevator traction machine technology and discloses a multi-functional traction machine, including: a traction machine assembly; a motor assembly, the front end of which is coaxially connected to the traction machine assembly, and an encoder connected to the rear end of the motor assembly; and a controller assembly, which is mounted on the motor assembly and located on the same side as the encoder. This utility model directly mounts the controller assembly on the motor assembly and places it on the same side as the encoder, significantly shortening the signal transmission distance between the encoder, motor assembly, and controller assembly, reducing the length of signal lines exposed to complex electromagnetic environments, and thus reducing the impact of electromagnetic interference on signal stability. By directly integrating the controller assembly onto the motor assembly, this utility model not only saves space and improves space utilization but also avoids the use of additional connecting wires and fasteners, making the entire traction machine more compact and efficient.

Description

Technical Field

[0001] This utility model relates to the field of elevator traction machine technology, specifically to a multi-functional traction machine. Background Technology

[0002] The traction machine is the core drive equipment of the elevator system, also known as the elevator host. Its core function is to transmit power through the friction between the traction sheave and the traction cable, driving the elevator car and counterweight to move up and down. It is a key device for converting electrical energy into mechanical energy.

[0003] Existing elevator control systems house all components within control cabinets, resulting in large cabinets that occupy significant shaft space. This creates considerable challenges for elevator design, layout, and maintenance in environments with limited shaft space, increasing costs. Furthermore, the traction machine installation suffers from low space utilization and low integration. The significant distance between the traction machine and the control cabinet leads to long signal transmission paths between the encoders, motors, and other components of the traction machine and the control cabinet. Long-distance encoder or motor signal lines are susceptible to external electromagnetic interference, affecting the stability of high / low level signals and preventing the controller from accurately acquiring critical data such as motor speed and position. Excessive signal transmission paths can also cause current attenuation, potentially lowering the current below the required threshold, further reducing signal interference immunity. In such cases, the controller receiver may struggle to accurately identify signals, leading to misjudgments or data loss, ultimately impacting the elevator's precise control. Utility Model Content

[0004] In view of this, the present invention provides a multi-functional traction machine to solve the problems that the controller of the current traction machine is usually set in the control cabinet, which makes it impossible for the controller to accurately obtain key data such as motor speed and position, affecting the precise control of the elevator, resulting in low space utilization and low integration.

[0005] This utility model provides an all-in-one traction machine, including:

[0006] Traction machine assembly;

[0007] A motor assembly having a coaxial drive end and a non-drive end, the drive end of the motor assembly being coaxially connected to the traction machine assembly, and an encoder being connected to the non-drive end of the motor assembly;

[0008] A controller assembly is mounted on the motor assembly and is located on the same side of the motor assembly as the encoder.

[0009] The beneficial effects of the above-mentioned all-in-one traction machine are as follows: This utility model directly sets the controller assembly on the motor assembly and places it on the same side as the encoder, which greatly shortens the signal transmission distance between the encoder, the motor assembly and the controller assembly, reduces the length of the signal line exposed to the complex electromagnetic environment, and thus reduces the impact of electromagnetic interference on the stability of high / low level signals.

[0010] By shortening the transmission path, the current attenuates less over short distances, the signal strength is more stable, and the receiver of the controller assembly can more accurately identify the signal, avoiding misjudgment or data loss caused by signal distortion.

[0011] The controller assembly can more reliably acquire key data such as motor assembly speed and position, ensuring more precise drive control of the elevator system for the car and counterweight, and improving the safety and comfort of elevator operation.

[0012] This invention integrates the controller assembly directly onto the motor assembly, saving space, improving space utilization, and eliminating the need for additional connecting wires and fasteners, making the entire traction machine more compact and efficient. Furthermore, this integrated design helps improve system stability and reliability because the physical connection between the controller assembly and the motor assembly is tighter, reducing the risk of failure due to loose connections or aging wiring.

[0013] In one alternative embodiment, the motor assembly includes:

[0014] Motor housing;

[0015] The motor shaft is rotatably disposed inside the motor housing, the front end of the motor shaft is the drive end, and the front end of the motor shaft is coaxially connected to the traction machine assembly;

[0016] A motor stator assembly, wherein the motor stator assembly is fixedly disposed inside the motor housing, and the motor stator assembly has an axially formed receiving cavity;

[0017] A motor rotor assembly is disposed within the accommodating cavity and coaxially connected to the motor shaft, and an air gap exists between the motor rotor assembly and the motor stator assembly.

[0018] In one optional embodiment, the encoder includes an encoder rotating part, an encoder outer ring, and an encoder bracket; the rear end of the motor shaft is a non-driving end, a positioning hole is provided on the rear end face of the motor shaft, a tapered hole inlaid shaft is provided in the positioning hole, and the encoder rotating part is fixedly mounted on the tapered hole inlaid shaft; the encoder outer ring is coaxially arranged with the encoder rotating part and located outside the encoder rotating part, the encoder outer ring is interference-fitted with the encoder bracket, and the encoder bracket is fixedly mounted on the motor housing.

[0019] The beneficial effects of the above technical solution are as follows: Because the controller assembly and the encoder are arranged on the same side, the electrical signal detected by the outer ring of the encoder is directly transmitted to the controller assembly through a short-distance line. Due to the high coaxiality between the encoder rotating part and the motor shaft and the stable position of the encoder outer ring, the accuracy and stability of the signal are guaranteed. The controller assembly can then accurately calculate the real-time speed, position and other key parameters of the motor, thereby achieving precise control of the elevator traction machine.

[0020] In one alternative implementation, the controller assembly includes:

[0021] The controller housing has an opening at its rear end and a ventilation hole at its front end. The front end of the controller housing is mounted on an encoder bracket.

[0022] An end cover plate is provided to seal the opening of the controller housing and forms a control board holding cavity with the controller housing.

[0023] At least one control board is provided, which is disposed within a control board holding cavity.

[0024] In one optional embodiment, the motor stator assembly includes a stator core and a stator winding, wherein the stator winding is a flat wire winding or a round wire winding; the motor rotor assembly includes a rotor core and magnets, wherein multiple magnets are arranged, and each magnet is attached to the surface of the rotor core or embedded inside the rotor core.

[0025] In one optional embodiment, a reducer assembly is further provided between the traction machine assembly and the motor assembly, the reducer assembly comprising:

[0026] Gearbox housing;

[0027] A reducer input gear is coaxially connected to the output shaft end of the motor assembly;

[0028] The reducer output gear is coaxially connected to the input shaft end of the traction machine assembly;

[0029] Multiple reducer double gears are provided, each of which is rotatably disposed inside the reducer housing. Each reducer double gear includes a first planetary gear and a second planetary gear. The first planetary gear and the second planetary gear are coaxially connected by a connecting shaft. Each first planetary gear is circumferentially disposed around the reducer input gear and meshes with the reducer input gear. Each second planetary gear is circumferentially disposed around the reducer output gear and meshes with the reducer output gear.

[0030] The beneficial effects of the above technical solution are as follows: the reducer adopts coaxial, planetary, and parallel shaft reduction structures, reducing axial installation space and improving system efficiency. The reducer is a planetary parallel shaft reducer, which differs from traditional planetary gearboxes. This new reducer does not have the external gear ring structure of a planetary gearbox, resulting in lower cost and noise. Furthermore, this new reducer can withstand greater forces and is less prone to damage under heavy loads, making it suitable for work scenarios with high load-bearing capacity requirements.

[0031] In one alternative embodiment, the outer diameter of the reducer input gear is smaller than the outer diameter of the first planetary gear, the outer diameter of the second planetary gear is smaller than the outer diameter of the first planetary gear, and the outer diameter of the reducer output gear is larger than the outer diameter of the second planetary gear.

[0032] In one optional embodiment, interfaces are provided on the traction machine assembly, reducer assembly, motor assembly, encoder and controller assembly so that the traction machine assembly, reducer assembly, motor assembly, encoder and controller assembly are sequentially fastened together by bolts.

[0033] The beneficial effects of the above technical solution are as follows: During on-site installation, it is only necessary to align and tighten the assemblies with the reserved interfaces in the order of traction machine assembly → reducer → motor assembly → controller assembly using bolts. No secondary processing or adjustment is required on-site, which greatly shortens the installation cycle and is especially suitable for installation scenarios with limited space, such as elevator shafts.

[0034] In one alternative embodiment, the traction machine assembly includes:

[0035] Traction machine base;

[0036] The traction machine shaft has its two ends rotatably mounted inside the traction machine base;

[0037] The traction sheave is connected to the shaft of the traction machine, and a winding groove is provided on the outer side wall of the traction sheave.

[0038] In one alternative embodiment, the front section of the motor shaft extends forward out of the motor housing and is fixedly connected to the input gear of the reducer; the rear section of the traction machine shaft extends backward out of the traction machine base and is fixedly connected to the output gear of the reducer.

[0039] A stepped hole is provided on the rear end face of the traction machine shaft, and the front end of the motor shaft is inserted into the stepped hole and positioned concentrically with the traction machine shaft through a bearing.

[0040] In one optional embodiment, the traction machine base is a split-type traction machine base, which includes a traction machine front end cover, a traction machine rear end cover, side cover plates, an upper cover plate, and a traction machine base plate. There is a gap between the traction machine front end cover and the traction machine rear end cover. The side cover plates, the upper cover plate, and the traction machine base plate are detachably disposed between the traction machine front end cover and the traction machine rear end cover. The side cover plates, the upper cover plate, the traction machine base plate, the traction machine front end cover, and the traction machine rear end cover form a traction sheave holding cavity for holding the traction sheave.

[0041] The side cover plate covers the traction sheave section so that the uncovered parts of the traction sheave are exposed;

[0042] The traction machine base plate is provided with through holes for the traction cable wound on the traction sheave to pass through.

[0043] The beneficial effects of the above technical solution are as follows: the side cover plate partially covers the traction sheave, so that the uncovered part of the traction sheave is exposed, directly exposing the traction sheave and the area where the traction cable is wrapped, which makes it easier for maintenance personnel to quickly disassemble and repair the traction sheave and replace the traction cable.

[0044] In one optional embodiment, a brake is provided at the front end of the traction machine base. The brake has a rotating part and a braking part. The rotating part is coaxially connected to the traction machine shaft, and the braking part is used to brake the rotating part. Attached Figure Description

[0045] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0046] Figure 1 A schematic diagram of the structure of an all-in-one traction machine provided by this utility model;

[0047] Figure 2 A plan view of an all-in-one traction machine provided by this utility model;

[0048] Figure 3 A cross-sectional view of an all-in-one traction machine provided by this utility model;

[0049] Figure 4 A partial sectional view of an all-in-one traction machine provided by this utility model;

[0050] Figure 5 A first-view structural diagram of the internal structure of the reducer assembly of an all-in-one traction machine provided by this utility model;

[0051] Figure 6 A schematic diagram of the internal structure of the reducer assembly of an all-in-one traction machine provided by this utility model from a second perspective.

[0052] Figure 7 An exploded view of the controller assembly for an all-in-one traction machine provided by this utility model.

[0053] Explanation of reference numerals in the attached figures:

[0054] 1. Brake; 11. First bolt; 12. Keypad.

[0055] 2. Traction machine assembly; 21. Traction machine front end cover; 22. Traction wheel; 221. Winding groove; 23. Connecting shaft; 24. Traction machine rear end cover; 25. Traction machine front bearing; 26. Traction machine shaft; 261. Stepped hole; 27. First flat key; 28. Traction machine rear bearing; 29. ​​Traction machine base plate; 210. Fifth bolt; 211. Side cover plate; 212. Top cover plate; 214. Through hole; 215. Fifth nut; 216. Sixth bolt; 217. Seventh bolt;

[0056] 3. Reducer assembly; 31. Reducer front housing; 32. Reducer rear housing; 33. Reducer double gear; 331. First planetary gear; 332. Second planetary gear; 34. Reducer output gear; 35. Reducer input gear; 36. Second bolt; 37. Second flat key; 38. Tapered bearing.

[0057] 4. Motor assembly; 41. Motor shaft; 42. Motor stator assembly; 43. Positioning shaft; 44. Encoder; 441. Encoder rotating part; 442. Encoder outer ring; 443. Encoder bracket; 47. Bearing; 48. Fourth bolt; 411. Front bearing of motor; 412. Rear bearing of motor; 413. Rotor core; 414. Positioning hole.

[0058] 5. Controller assembly, 51. Controller housing, 511. Ventilation hole, 52. Control board, 53. End cover plate. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0060] Combination Figures 1 to 7As shown, according to an embodiment of the present invention, a multi-functional traction machine is provided, including a traction machine assembly 2, a motor assembly 4, an encoder 44, and a controller assembly 5. The motor assembly 4 has a coaxial drive end and a non-drive end. The drive end of the motor assembly 4 is coaxially connected to the traction machine assembly 2, and the encoder 44 is connected to the rear end of the motor assembly 4. The controller assembly 5 is mounted on the motor assembly 4 and is located on the same side of the motor assembly 4 as the encoder 44.

[0061] The aforementioned all-in-one traction machine places the controller assembly 5 directly on the motor assembly 4 and on the same side as the encoder 44, which significantly shortens the signal transmission distance between the encoder 44, the motor assembly 4 and the controller assembly 5, reduces the length of the signal lines exposed to the complex electromagnetic environment, and thus reduces the impact of electromagnetic interference on the stability of high / low level signals.

[0062] By shortening the transmission path, the current attenuates less over short distances, the signal strength is more stable, and the receiver of the controller assembly can more accurately identify the signal, avoiding misjudgment or data loss caused by signal distortion.

[0063] The controller assembly can more reliably acquire key data such as motor assembly speed and position, including position signals from the encoder and motor operating status signals, ensuring more precise drive control of the elevator system for the car and counterweight, and improving the safety and comfort of elevator operation.

[0064] In traditional traction machines, the controller assembly is typically installed separately from the motor assembly. This not only occupies more space but also requires additional connecting cables and fasteners during installation, increasing complexity and cost. In this embodiment, by directly integrating the controller assembly 5 onto the motor assembly 4, space is saved, space utilization is improved, and the use of additional connecting cables and fasteners is avoided, making the entire traction machine more compact and efficient. Furthermore, this integrated design helps improve system stability and reliability because the physical connection between the controller assembly and the motor assembly is tighter, reducing the risk of failure due to loose connections or aging wiring.

[0065] In some embodiments, the motor assembly 4 includes a motor housing, a motor shaft 41, a motor stator assembly 42, and a motor rotor assembly. The motor shaft 41 is rotatably disposed inside the motor housing, with its front end serving as the drive end, and is coaxially connected to the traction machine assembly 2. The motor stator assembly 42 is fixedly disposed inside the motor housing, and has an axially formed accommodating cavity. The motor rotor assembly is disposed within the accommodating cavity and coaxially connected to the motor shaft 41, with an air gap between the motor rotor assembly and the motor stator assembly 42.

[0066] Among them, heat sinks are added around the motor housing to improve heat dissipation capacity, ensuring that the motor can maintain good operating condition even after long-term operation and extending the service life of the motor.

[0067] In some embodiments, the motor assembly 4 can be matched with multiple types of encoders, such as photoelectric encoders, magnetic encoders, rotary encoders, inductive encoders, etc., only requiring the replacement of the corresponding positioning shaft 43. The encoder 44 includes an encoder rotating part 441, an encoder outer ring 442, and an encoder bracket 443.

[0068] The rear end of the motor shaft 41 is a non-driving end. A positioning hole 414 is provided on the rear end face of the motor shaft 41 to provide a precise mounting reference for the positioning shaft 43. The positioning shaft 43 is disposed within the positioning hole 414, and the encoder rotating part is fixedly mounted on the positioning shaft 43. More specifically, the positioning shaft 43 is a tapered hole inlaid shaft, which includes an inlaid shaft section and a positioning plate. The inlaid shaft section can be positioned into the positioning hole 414 by screws. The positioning plate is connected to the tapered hole inlaid shaft section and to the encoder rotating part 441.

[0069] The encoder outer ring 442 is coaxially arranged with the encoder rotating part 441 and located on the periphery of the encoder rotating part 441. The encoder outer ring 442 is interference-fitted with the encoder bracket 443, which can effectively prevent the encoder outer ring 442 from loosening due to vibration or external force. The encoder bracket 443 is fixedly mounted on the motor housing, and the stable support of the motor housing further reduces the risk of displacement of the encoder outer ring 442. As the fixed detection end of the encoder, the encoder outer ring 442 usually integrates sensing elements, such as magnetic gratings or optical gratings, and its positional stability directly affects the accuracy of signal detection. If the encoder outer ring 442 is loose, it may cause the sensing signal to deviate or become distorted, ultimately affecting the controller's judgment of the motor status. This embodiment significantly improves the anti-interference capability of the encoder outer ring 442 through a double fixing method (interference fit + motor housing).

[0070] Since the encoder outer ring 442 is strictly coaxial with the encoder rotating part 441 and the encoder outer ring 442 is located on the outside of the rotor, such as the encoder outer ring 442 of a magnetic encoder integrating a magnetic sensor, or the outer ring of a photoelectric encoder integrating a light source and a receiver, when the encoder rotating part 441 rotates with the motor shaft, the detection element of the encoder outer ring 442 will sense the motion characteristics of the encoder rotating part in real time (such as the change of magnetic grating scale or grating stripes on the encoder rotating part), and generate electrical signals (such as pulse signals or analog signals) related to speed and position.

[0071] Because the controller assembly and encoder are located on the same side, the electrical signal detected by the outer ring 442 of the encoder is directly transmitted to the controller assembly via a short-distance line. Due to the high coaxiality between the encoder rotating part and the motor shaft and the stable position of the encoder outer ring, the accuracy and stability of the signal are guaranteed. The controller assembly can then accurately calculate key parameters such as the real-time speed and position of the motor, thereby achieving precise control of the elevator traction machine.

[0072] In some embodiments, the motor stator assembly 42 includes a stator core and stator windings, wherein the stator windings are flat wire windings or round wire windings. Multiple stator slots are circumferentially spaced on the inner wall surface of the stator core, and the stator windings are housed within these slots. The stator slots are configured as inclined slots not parallel to the shaft axis, thereby effectively reducing tooth harmonics and lowering electromagnetic noise and vibration. The motor rotor assembly includes a rotor core 413 and magnets, wherein multiple magnets are arranged, each magnet being either attached to the surface of the rotor core or embedded within the rotor core. That is, the motor rotor assembly employs surface-mounted magnets and embedded magnets, increasing the motor speed, thereby improving power density and reducing volume.

[0073] More specifically, the winding cross-section is made of flat wire, which, compared to round wire, has a higher fill factor in the stator slots, reducing winding resistance and improving motor efficiency. Simultaneously, the flat wire has a larger heat dissipation area, making heat easier to dissipate and allowing the motor to operate stably under higher loads, indirectly supporting higher speeds. Surface-mounted magnets are simple in structure and easy to manufacture, suitable for low-to-medium speed applications; their air gap magnetic field has good sinusoidal characteristics and a better back electromotive force waveform, helping to reduce motor operating noise. Embedded magnets, with the magnets embedded inside the rotor core, significantly enhance the magnets' resistance to centrifugal force through the core's enclosure, allowing the motor to operate in a higher speed range.

[0074] In some embodiments, the controller assembly 5 is located on the side of the motor assembly 4 away from the traction machine assembly 2. It receives external control signals and sends control commands to the motor assembly 4 accordingly to achieve precise control of the traction machine assembly 2. The controller assembly 5 integrates a control circuit board, a power module, and a signal processing unit. The control circuit board executes the control algorithm and outputs corresponding control signals based on the input signals. The power module provides a stable operating voltage to the controller assembly 5. The signal processing unit receives and processes signals from various sensors to ensure accurate transmission of control commands. Furthermore, the controller assembly 5 has a fault diagnosis function, capable of monitoring the operating status of the motor assembly 4 and the traction machine assembly 2 in real time. Upon detecting any abnormalities, it immediately issues an alarm and takes corresponding protective measures to ensure the safe and reliable operation of the elevator.

[0075] Combination Figure 7As shown, the controller assembly 5 includes a controller housing 51, an end cover plate 53, and a control board 52. The controller housing 51 has an opening at its rear end and a ventilation hole 511 on its front end. The ventilation hole 511 is used for heat dissipation, allowing the heat generated by the control board to dissipate in a timely manner. The front end of the controller housing 51 is connected to an encoder bracket 443. The end cover plate 53 seals the opening of the controller housing 51 and, together with the controller housing 51, forms a control board housing cavity. The control board 52 has at least one layer and is disposed within the control board housing cavity.

[0076] In this embodiment, the controller housing 51 is integrated onto the encoder bracket 443, thereby effectively shortening the signal transmission path between the controller assembly and the encoder and improving the detection accuracy.

[0077] Traditional traction machines employ a low-speed direct-drive method, with the traction sheave connected to the motor shaft via a rotating shaft, resulting in low system efficiency. To address this issue, in some embodiments, a reducer assembly 3 is added between the traction machine assembly 2 and the motor assembly 4, and the controller assembly and reducer assembly are axially connected in series. This integrates the electric drive system to the drive end of the traction machine, improving system efficiency. This may be achieved by adjusting parameters such as speed and torque through the reducer, optimizing the power transmission process, and thus improving the overall performance of the traction machine.

[0078] The reducer assembly 3 includes a reducer housing, a reducer input gear 35, a reducer output gear 34, and a reducer double gear 33. The reducer input gear 35 is coaxially connected to the output shaft of the motor assembly 4. The reducer output gear 34 is coaxially connected to the input shaft of the traction machine assembly 2. Multiple reducer double gears 33 are provided, each rotatably mounted inside the reducer housing, and engaged... Figure 5 and Figure 6 As shown, the reducer double gear 33 includes a first planetary gear 331 and a second planetary gear 332. The first planetary gear 331 and the second planetary gear 332 are coaxially connected by a connecting shaft. Each first planetary gear 331 is arranged circumferentially around the reducer input gear 35 and meshes with the reducer input gear 35. Each second planetary gear 332 is arranged circumferentially around the reducer output gear 34 and meshes with the reducer output gear 34.

[0079] In this embodiment, the reducer adopts coaxial, planetary, and parallel shaft reduction structures to reduce axial installation space and improve system efficiency. The reducer is a planetary parallel shaft reducer, unlike traditional planetary gearboxes. This embodiment's reducer lacks the external gear ring structure of a planetary gearbox, resulting in lower cost and noise. Furthermore, this reducer can withstand greater forces and is less prone to damage under heavy loads, making it suitable for applications requiring high load-bearing capacity.

[0080] In some embodiments, the outer diameter of the reducer input gear 35 is smaller than the outer diameter of the first planetary gear 331, the outer diameter of the second planetary gear 332 is smaller than the outer diameter of the first planetary gear 331, and the outer diameter of the reducer output gear 34 is larger than the outer diameter of the second planetary gear 332. In this embodiment, when the reducer input gear (small outer diameter) meshes with multiple sets of large outer diameter first planetary gears, the number of contact teeth is large, the meshing overlap coefficient is high, and the transmission impact is smaller; the meshing of the second planetary gear (small outer diameter) with the large outer diameter reducer output gear also has a high overlap coefficient characteristic, and the change in inter-tooth load is smoother. The combined smoothness of the two-stage transmission effectively reduces the vibration and noise during reducer operation, improving the comfort inside the elevator car.

[0081] In some embodiments, interfaces are provided on the traction machine assembly 2, reducer assembly 3, motor assembly 4, encoder 44, and controller assembly 5 to allow them to be sequentially fastened together by bolts. More specifically, the reserved interfaces are respectively provided on the traction machine base, reducer housing, motor housing, encoder bracket 443, and controller housing 51, and the traction machine base, reducer housing, motor housing, encoder bracket 443, and controller housing 51 are connected together by bolts.

[0082] During on-site installation, simply align and tighten the assemblies with the reserved interfaces in the order of traction machine assembly → reducer → motor assembly → controller assembly using bolts. No secondary processing or adjustment is required on-site, which greatly shortens the installation cycle (significantly improving efficiency compared to traditional welding or customized assembly). It is especially suitable for installation scenarios with limited space, such as elevator shafts.

[0083] The structure of the reducer assembly 3 in this utility model is as follows: Figure 3 The reducer housing is divided into a front reducer housing 31 and a rear reducer housing 32. Both the front and rear reducer housings have three bearing mounting holes, and three pairs of tapered bearings 38 are mounted on them. One reducer input gear 35 simultaneously meshes with the first planetary gear 331 of the three double-gear reducers 33, and transmits power through the second planetary gear 332 of the double-gear reducers 33 meshing with the reducer output gear 34. Power transmission via the three double-gears reduces axial installation space and improves system efficiency. The reducer output gear 34 transmits power to the traction machine shaft 26 via a spline. The front reducer housing 31 is positioned with the traction machine rear end cover 24 by a stop and is fixed by bolts.

[0084] The structure of the motor assembly 4 in this utility model is as follows: Figure 4To explain, the motor assembly 4 and the reducer assembly 3 share a common housing, and the reducer rear housing 32 can serve as the front cover of the motor; the motor housing 45 is positioned with the reducer rear housing 32 by a stop; the motor housing 45 is positioned with the motor rear housing by a stop, and the motor rear housing, the motor housing 45 and the reducer rear housing 32 are connected and fixed in sequence by a third bolt; the motor shaft 41 is supported and fixed on the reducer rear housing 32 and the motor rear housing by the motor front bearing 411 and the motor rear bearing 412, wherein the motor rear bearing 412 is a floating end bearing.

[0085] In some embodiments, the traction machine assembly 2 includes a traction machine base, a traction machine shaft 26, and a traction sheave 22. The two ends of the traction machine shaft 26 are rotatably disposed inside the traction machine base. The traction sheave 22 is connected to the traction machine shaft 26, and a winding groove 221 is provided on the outer side wall of the traction sheave 22.

[0086] In some embodiments, the front section of the motor shaft 41 extends forward out of the motor housing and is fixedly connected to the input gear 35 of the reducer. The rear section of the traction machine shaft 26 extends rearward out of the traction machine base and is fixedly connected to the output gear 34 of the reducer.

[0087] A stepped hole 261 is provided on the rear end face of the traction machine shaft 26 to provide a precise radial positioning reference for the front end of the motor shaft 41, ensuring that the axes of the two shafts are strictly coincident. The front end of the motor shaft 41 is inserted into the stepped hole 261 and is concentrically positioned with the traction machine shaft 26 through the bearing 47. The insertion of the front end of the motor shaft 41 into the stepped hole of the traction machine shaft 26 forms a nested shaft-shaft layout, replacing the traditional structure in which the motor shaft 41 and the traction machine shaft 26 are parallel or separate. This embodiment significantly shortens the axial distance between the motor assembly and the traction machine assembly, thereby making the overall axial length of the traction machine shorter and meeting the requirements for miniaturization and compactness of the traction machine. When assembling the motor shaft 41 and the traction machine shaft 26, the initial positioning of the two shafts can be quickly completed through "insertion-alignment" without the need for complex measuring and adjustment tools, thus shortening the installation time.

[0088] In some embodiments, the traction machine base is a split-type traction machine base, which includes a front cover 21, a rear cover 24, a side cover 211, an upper cover 212, and a base plate 29. There is a gap between the front cover 21 and the rear cover 24. The side cover 211, the upper cover 212, and the base plate 29 are detachably disposed between the front cover 21 and the rear cover 24. The side cover 211, the upper cover 212, the base plate 29, the front cover 21, and the rear cover 24 form a traction sheave housing cavity for housing the traction sheave 22. The base plate 29 has a through hole 214 for the traction cable wound on the traction sheave 22 to pass through.

[0089] The side cover plate 211 partially covers the traction sheave 22 so that the uncovered parts of the traction sheave 22 are exposed, directly exposing the traction sheave and the area where the traction cable is wound, which facilitates maintenance personnel to quickly disassemble and repair the traction sheave and replace the traction cable.

[0090] The traction machine assembly 2 in this utility model has a structural form as follows: Figure 2 The following description is provided. The traction machine shaft 26 is supported and fixed on the front end cover 21 and the rear end cover 24 of the traction machine via the front bearing 25 and the rear bearing 28. The traction machine shaft 26 and the traction sheave 22 are connected by a first flat key 27 to transmit torque. The front end cover 21 and the rear end cover 24 of the traction machine are connected and fixed to two traction machine connecting shafts 23 via a traction machine base plate 29, and are fixed with a fifth bolt 210 and a fifth nut 215. The traction sheave 22 is protected by an upper cover plate 212 and two side cover plates 211, and is fixed to the front end cover 21 and the rear end cover 24 of the traction machine with a sixth bolt 216 and a seventh bolt 217.

[0091] In some embodiments, a brake 1 is provided at the front end of the traction machine base. The brake 1 has a rotating part and a braking part. The rotating part is coaxially connected to the traction machine shaft 26, and the braking part is used to brake the rotating part. Specifically, the rotating part is a brake disc that rotates synchronously with the traction machine shaft 26. More specifically, the brake disc is a keyway 12. The braking part is a brake pad that contacts the braking part through friction to achieve deceleration.

[0092] The brake 1 is located near the traction machine assembly 2. Since the brake is directly close to the traction machine assembly 2, its brake caliper / brake pad can directly act on the output shaft or traction sheave of the traction machine. There is no need to indirectly brake through intermediate components such as the reducer assembly 3 or the motor shaft 41. The braking response is more timely, avoiding braking delay caused by jamming or wear of intermediate components (such as the reducer).

[0093] The specific installation process for the above-mentioned all-in-one traction machine is as follows:

[0094] by Figure 1 The following steps are described. The brake 1 is fixed to the front cover 21 of the traction machine using the first bolt 11, and the spline key 12 of the brake is connected to the traction machine shaft 26 using a spline connection. The reducer assembly 3 is fixed to the rear cover 24 of the traction machine using the second bolt 36, and the reducer output gear 34 is connected to the traction machine shaft 26 using a spline connection. The motor assembly 4 is fixed to the reducer rear housing 32 on the reducer assembly 3 using the third bolt, and the motor shaft 41 of the motor assembly 4 is connected to the reducer input gear 35 using a second flat key 37. The motor shaft 41 and the traction machine shaft 26 are concentrically positioned using a bearing 47. The controller is fixed to the motor rear housing of the motor assembly 4 using the fourth bolt 48, and the leads of the motor stator assembly 42 and the encoder 44 are fixedly connected to the controller.

[0095] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A multi-in-one tractor, characterized by, include: Traction machine assembly (2); The motor assembly (4) has a coaxial drive end and a non-drive end. The drive end of the motor assembly (4) is coaxially connected to the traction machine assembly (2), and the non-drive end of the motor assembly (4) is connected to an encoder (44). A controller assembly (5) is mounted on the motor assembly (4) and is located on the same side of the motor assembly (4) as the encoder (44).

2. The all-in-one tractor of claim 1, wherein, The motor assembly (4) includes: Motor housing; The motor shaft (41) is rotatably disposed inside the motor housing. The front end of the motor shaft (41) is the drive end. The front end of the motor shaft (41) is coaxially connected to the traction machine assembly (2). Motor stator assembly (42), the motor stator assembly (42) is fixedly disposed inside the motor housing, and the motor stator assembly (42) has an axially formed receiving cavity; The motor rotor assembly is disposed in the accommodating cavity and coaxially connected to the motor shaft (41), and there is an air gap between the motor rotor assembly and the motor stator assembly (42).

3. The all-in-one tractor of claim 2, wherein, The encoder (44) includes an encoder rotating part (441), an encoder outer ring (442), and an encoder bracket (443); the rear end of the motor shaft (41) is a non-driving end, and a positioning hole (414) is provided on the rear end face of the motor shaft (41). A positioning shaft (43) is provided in the positioning hole (414), and the encoder rotating part is fixedly mounted on the positioning shaft (43); the encoder outer ring (442) is coaxially arranged with the encoder rotating part (441) and located on the periphery of the encoder rotating part (441). The encoder outer ring (442) is interference-fitted with the encoder bracket (443), and the encoder bracket (443) is fixedly mounted on the motor housing.

4. The all-in-one tractor of claim 3, wherein, The controller assembly (5) includes: The controller housing (51) has an opening at its rear end and a ventilation hole (511) at its front end. The front end of the controller housing (51) is mounted on an encoder bracket (443). End cover plate (53), the end cover plate (53) is provided to block the opening of the controller housing (51), and together with the controller housing (51) forms a control plate holding cavity; At least one control board (52) is disposed in the control board holding cavity.

5. The all-in-one tractor of claim 2, wherein, The motor stator assembly (42) includes a stator core and a stator winding, wherein the stator winding is a flat wire winding or a round wire winding; the motor rotor assembly includes a rotor core and magnets, wherein multiple magnets are arranged, and each magnet is attached to the surface of the rotor core or embedded inside the rotor core.

6. The all-in-one tractor of any of claims 2-5, wherein, A reducer assembly (3) is also provided between the traction machine assembly (2) and the motor assembly (4), and the reducer assembly (3) includes: Gearbox housing; The reducer input gear (35) is coaxially connected to the output shaft end of the motor assembly (4); The reducer output gear (34) is coaxially connected to the input shaft end of the traction machine assembly (2); Multiple reducer double gears (33) are rotatably disposed inside the reducer housing. Each reducer double gear (33) includes a first planetary gear (331) and a second planetary gear (332). The first planetary gear (331) and the second planetary gear (332) are coaxially connected by a connecting shaft. Each first planetary gear (331) is circumferentially disposed around the reducer input gear (35) and meshes with the reducer input gear (35). Each second planetary gear (332) is circumferentially disposed around the reducer output gear (34) and meshes with the reducer output gear (34).

7. The all-in-one tractor of claim 6, wherein, The outer diameter of the input gear (35) of the reducer is smaller than the outer diameter of the first planetary gear (331), the outer diameter of the second planetary gear (332) is smaller than the outer diameter of the first planetary gear (331), and the outer diameter of the output gear (34) of the reducer is larger than the outer diameter of the second planetary gear (332).

8. The all-in-one tractor of claim 6, wherein, The traction machine assembly (2), reducer assembly (3), motor assembly (4), encoder (44) and controller assembly (5) all have reserved interfaces so that the traction machine assembly (2), reducer assembly (3), motor assembly (4), encoder (44) and controller assembly (5) can be connected in sequence by bolts.

9. The all-in-one tractor of claim 6, wherein, The traction machine assembly (2) includes: Traction machine base; The traction machine shaft (26) has two ends rotatably disposed inside the traction machine base; The traction sheave (22) is connected to the traction machine shaft (26), and the outer side wall of the traction sheave (22) is provided with a winding groove (221).

10. The all-in-one tractor of claim 9, wherein, The front section of the motor shaft (41) extends forward out of the motor housing and is fixedly connected to the input gear (35) of the reducer; the rear section of the traction machine shaft (26) extends backward out of the traction machine base and is fixedly connected to the output gear (34) of the reducer. A stepped hole (261) is provided on the rear end face of the traction machine shaft (26). The front end of the motor shaft (41) is inserted into the stepped hole (261) and is concentrically positioned with the traction machine shaft (26) through the bearing (47).

11. The all-in-one tractor of claim 9, wherein, The traction machine base is a split traction machine base. The traction machine base includes a front cover (21), a rear cover (24), a side cover (211), an upper cover (212), and a bottom plate (29). There is a gap between the front cover (21) and the rear cover (24). The side cover (211), the upper cover (212), and the bottom plate (29) are detachably disposed between the front cover (21) and the rear cover (24). The side cover (211), the upper cover (212), the bottom plate (29), the front cover (21), and the rear cover (24) form a traction wheel holding cavity for holding the traction wheel (22). The side cover plate (211) partially covers the traction sheave (22) so that the uncovered part of the traction sheave (22) is exposed; The traction machine base plate (29) is provided with a through hole (214) for the traction cable wound on the traction sheave (22) to pass through.

12. The all-in-one tractor of claim 9, wherein, The front end of the traction machine base is provided with a brake (1), which has a rotating part and a braking part. The rotating part is coaxially connected to the traction machine shaft (26), and the braking part is used to brake the rotating part.

Images