Single-motor driving unit and self-driven rail elevator

Abstract

The utility model provides a single-motor driving unit and a self-driven rail elevator, which relate to the technical field of elevator equipment and comprise a motor, a driving wheel and a speed reducer. An output shaft of the motor is provided with a first output end and a second output end, the first output end is located on the first side of the motor, the second output end is located on the second side of the motor, and the first side and the second side are the two opposite sides of the motor. The driving wheels comprise the first driving wheel and the second driving wheel, and the first driving wheel is arranged on the first side of the motor and is in power connection with the first output end of the motor. The second driving wheel is arranged on the second side of the motor and is in power connection with the second output end of the motor; the first driving wheel walks and moves on the first guide rail, and the second driving wheel walks and moves on the second guide rail. In the invention, the two driving wheels corresponding to the two guide rails share one motor, the structure is more compact, the cost is lower, and the synchronous rotation of the two driving wheels can be ensured.

Description

Technical Field

[0001] The present application relates to the technical field of elevator equipment, and in particular to a single-motor drive unit and a self-driven rail elevator. Background Art

[0002] The self-propelled rail elevator uses a driving wheel to directly drive the elevator car up and down. There is no need to set up a counterweight, traction or towing cable. The hoistway layout is simple, the hoistway utilization rate is high, the hoistway layout is beautiful, and the lifting speed and lifting height are not restricted. In addition, the tire can reduce vibration and noise through tire friction driving wheel drive, with less wear, low noise, smooth and comfortable operation, and low maintenance cost. Chinese Patent 202311684339.3 discloses a self-propelled elevator. In the driving device disclosed in the patent document, the driving wheel and the driving source are installed on the mounting bracket to form a driving unit. The driving device is composed of a driving unit on the left and a driving unit on the right. The above-mentioned driving device is composed of two independent driving units. When the output of the two driving units is not synchronized, damage may be caused, and the two independent driving units still have room for optimization in volume. In addition, the two independent driving units need to coordinate and cooperate when driving, which makes the control system complicated. Utility Model Content

[0003] The technical problem to be solved by the present application is to propose a single motor drive unit and a self-driven rail elevator in view of the above-mentioned deficiencies in the prior art.

[0004] A single motor drive unit, comprising:

[0005] A motor, wherein the output shaft has a first output end and a second output end, wherein the first output end is located at a first side of the motor, and the second output end is located at a second side of the motor, and the first side and the second side are opposite sides of the motor;

[0006] The driving wheel comprises a first driving wheel and a second driving wheel, wherein the first driving wheel is arranged on a first side of the motor and is connected to a first output end of the motor by power; the second driving wheel is arranged on a second side of the motor and is connected to a second output end of the motor by power; the first driving wheel moves on a first guide rail, and the second driving wheel moves on a second guide rail;

[0007] The reducer includes a first reducer and a second reducer, wherein the first reducer is arranged on a first side of the motor and is located between a first output end of the motor and the first driving wheel; the second reducer is arranged on a second side of the motor and is located between a second output end of the motor and the second driving wheel.

[0008] Optionally, the single motor drive unit further includes a brake, and the brake includes a first brake and a second brake, the first brake acts on a first output end of the motor, and the second brake acts on a second output end of the motor.

[0009] Optionally, the first brake is arranged between the motor and the first reducer, and the second brake is arranged between the motor and the second reducer.

[0010] Optionally, both the first brake and the second brake are electromagnetic brakes.

[0011] Optionally, the first drive wheel and the second drive wheel both include a hub and a tire, the first reducer is accommodated in the hub of the first drive wheel, and the second reducer is accommodated in the hub of the second drive wheel.

[0012] Optionally, the mounting bracket of the single motor drive unit includes a first mounting arm, a second mounting arm, a third mounting arm, and a fourth mounting arm;

[0013] The first mounting arm is arranged on a first axial side of the first driving wheel, and the second mounting arm is arranged on a second axial side of the first driving wheel;

[0014] The third mounting arm is arranged on a first axial side of the second driving wheel, and the fourth mounting arm is arranged on a second axial side of the second driving wheel.

[0015] Optionally, a differential is provided between the first output end of the motor and the first drive wheel, or between the second output end of the motor and the second drive wheel.

[0016] On the other hand, the present application also provides a self-propelled rail elevator, comprising:

[0017] The above-mentioned single motor drive unit;

[0018] A car connected to a single motor drive unit;

[0019] The guide rail comprises a first guide rail and a second guide rail. The first driving wheel moves on the first guide rail, and the second driving wheel moves on the second guide rail.

[0020] Optionally, the self-driven rail elevator further comprises a connecting arm; a first connecting portion on the connecting arm is movably connected to the car, and a second connecting portion on the connecting arm is movably connected to a mounting bracket of the single motor drive unit;

[0021] The driving wheel and the car are arranged on the same side of the guide rail and are staggered up and down; under the gravity load of the car, the connecting arm drives the driving wheel of the single motor drive unit to press the guide rail.

[0022] Optionally, the single motor drive unit further includes a first limiting wheel assembly and a second limiting wheel assembly, and the first limiting wheel assembly and the second limiting wheel assembly both include a plurality of limiting wheels;

[0023] The first limiting wheel assembly and the second limiting wheel assembly are mounted on a mounting bracket of the single motor drive unit; the first limiting wheel assembly acts on the first guide rail, and the second limiting wheel assembly acts on the second guide rail;

[0024] Under the gravity load of the car, the first limiting wheel assembly and the first driving wheel press the first guide rail in opposite directions, and the second limiting wheel assembly and the second driving wheel press the second guide rail in opposite directions.

[0025] In the present application, the output shaft of the motor has a first output end and a second output end, which respectively drive the first drive wheel and the second drive wheel on both sides, the first drive wheel moves on the first guide rail, and the second drive wheel moves on the second guide rail. The two drive wheels corresponding to the two guide rails share a motor, which is more compact in structure, lower in cost, lighter in weight, and can ensure that the two drive wheels rotate synchronously. In addition, the first drive wheel and the second drive wheel on both sides can be used for driving at the same time. When one of them is damaged, the other can still provide driving force, which is safer. In addition, the drive device adopts a single motor drive solution, and the control system is simpler. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of a single motor drive unit in an embodiment of the present application.

[0027] Figure 2 It is a schematic diagram of the internal structure of a single motor drive unit in an embodiment of the present application.

[0028] Figure 3 Schematic diagram of another structure of a single motor drive unit in an embodiment of the present application.

[0029] Figure 4 It is a schematic diagram of the structure of the self-driven rail elevator in the embodiment of the present application.

[0030] Figure 5 It is another structural schematic diagram of the self-driven rail elevator in the embodiment of the present application.

[0031] Figure 6 It is a structural schematic diagram of the limiting wheel assembly in an embodiment of the present application.

[0032] Figure numerals: motor 10, output shaft 11, first output end 12, second output end 13, first drive wheel 20a, second drive wheel 20b, wheel hub 21, tire 22, first guide rail 30a, second guide rail 30b, first reducer 40a, second reducer 40b, first brake 50a, second brake 50b, mounting bracket 60, first mounting arm 61, second mounting arm 62, third mounting arm 63, fourth mounting arm 64, car 70, limiting wheel assembly 80, movable bracket 81, limiting wheel 82, connecting arm 90. DETAILED DESCRIPTION

[0033] The following is the specific embodiment of the present application and in conjunction with the accompanying drawings, the technical scheme of the present application is further described, but the present application is not limited to these embodiments. In the following description, specific details such as specific configuration and assembly are provided only to help fully understand the embodiments of the present application. Therefore, it should be clear to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, for clarity and brevity, the description of known functions and structures has been omitted.

[0034] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other.

[0035] refer to Figure 1 and Figure 2 The single motor drive unit includes a motor, a driving wheel, and a reducer. The single motor drive unit is used to drive the lift of the car. The motor drives the corresponding driving wheel to rotate through the reducer, so that the driving wheel moves on the corresponding guide rail and is used to drive the lift of the car.

[0036] Specifically, the output shaft 11 of the motor 10 has a first output end 12 and a second output end 13, the first output end 12 is located at the first side of the motor 10, the second output end 13 is located at the second side of the motor 10, and the first side and the second side are opposite sides of the motor 10. The driving wheel includes a first driving wheel 20a and a second driving wheel 20b, the first driving wheel 20a is arranged on the first side of the motor 10, and is connected to the first output end 12 of the motor 10 by power; the second driving wheel 20b is arranged on the second side of the motor 10, and is connected to the second output end 13 of the motor 10 by power; the first driving wheel 20a moves on the first guide rail 30a, and the second driving wheel 20b moves on the second guide rail 30b. The reducer includes a first reducer 40a and a second reducer 40b, the first reducer 40a is arranged on the first side of the motor 10, and is located between the first output end 12 of the motor 10 and the first driving wheel 20a; the second reducer 40b is arranged on the second side of the motor 10, and is located between the second output end 13 of the motor 10 and the second driving wheel 20b.

[0037] The motor 10 is a double-output shaft motor, and the output shaft of the motor extends out of the motor housing on both sides to form two output ends. The output ends on both sides, i.e., the first output end 12 and the second output end 13, can rotate synchronously to output power. On the first side of the motor, the first output end 12 rotates to output power, the input end of the first reducer 40a is connected to the first output end 12 of the motor, and the output end of the first reducer 40a is connected to the first drive wheel 20a, so that when the first output end 12 of the motor rotates to output power, the first reducer 40a transmits power to the first drive wheel 20a, so that the first drive wheel 20a moves on the first guide rail 30a. On the second side of the motor, the second output end 13 rotates to output power, the input end of the second reducer 40b is connected to the second output end 13 of the motor, and the output end of the second reducer 40b is connected to the second drive wheel 20b, so that when the second output end 13 of the motor rotates to output power, the second reducer 40b transmits power to the second drive wheel 20b, so that the second drive wheel 20b moves on the second guide rail 30b.

[0038] Furthermore, the first output end 12 and the second output end 13 are two ends of the motor output shaft, which can synchronously output power and synchronously drive the first drive wheel 20a and the second drive wheel 20b on both sides, so that the first drive wheel 20a and the second drive wheel 20b keep rotating synchronously. Figure 5 As shown, the first driving wheel 20a presses the first guide rail 30a for walking and moving on the first guide rail 30a, and the second driving wheel 20b presses the second guide rail 30b for walking and moving on the second guide rail 30b. The above-mentioned single-motor driving unit has a more compact structure and lower cost, because the two driving wheels corresponding to the two guide rails share one motor, and can ensure the synchronous rotation of the two driving wheels.

[0039] In one embodiment of the present application, the single motor drive unit also includes a brake, and the brake includes a first brake 50a and a second brake 50b. The first brake 50a acts on the first output end 12 of the motor, and the second brake 50b acts on the second output end 13 of the motor. The brake acts on the output shaft of the motor and is used for the braking and stopping process of the car. In one embodiment of the present application, the first brake 50a and the second brake 50b are both electromagnetic brakes, which can transmit the torque of the active side to the connector of the passive side, and can be freely combined, disconnected or braked as needed, and have the advantages of compact structure, simple operation, sensitive response, long life, reliable use, and easy to achieve remote control. The above-mentioned first brake 50a and the second brake 50b can both be used to apply braking force to the output shaft of the motor, thereby achieving braking force redundancy and improving safety.

[0040] In one embodiment of the present application, the first brake 50a is arranged between the motor and the first reducer 40a, and the second brake 50b is arranged between the motor and the second reducer 40b.

[0041] refer to Figure 2 In one embodiment of the present application, the first driving wheel 20a and the second driving wheel 20b both include a wheel hub 21 and a tire 22, the first reducer 40a is accommodated in the wheel hub 21 of the first driving wheel 20a, and the second reducer 40b is accommodated in the wheel hub 21 of the second driving wheel 20b. Specifically, the output end of the first reducer 40a is connected to the wheel hub 21 of the first driving wheel 20a to drive the wheel hub 21 and the tire 22 of the first driving wheel 20a to rotate. The output end of the second reducer 40b is connected to the wheel hub 21 of the second driving wheel 20b to drive the wheel hub 21 and the tire 22 of the second driving wheel 20b to rotate.

[0042] It should be understood that the tires of the first driving wheel and the second driving wheel need to ensure sufficient tread width to obtain sufficient driving friction. In this embodiment, the wheel hub extends toward one side of the reducer to cover the main body of the reducer, and the driving wheel is arranged using the space around the reducer. The driving wheel is arranged around the reducer so that the tread of the driving wheel and the reducer occupy the same width space, and the reducer is accommodated in the wheel hub, making the entire transmission structure more compact and smaller in size.

[0043] Furthermore, the first reducer and the second reducer are planetary reducers, which are smaller in size and are conducive to reducing the volume of the entire elevator drive unit.

[0044] like Figure 1 and Figure 3 As shown, in one embodiment of the present application, a first mounting arm 61 is arranged on the first axial side of the first drive wheel 20a, a second mounting arm 62 is arranged on the second axial side of the first drive wheel 20a, a third mounting arm 63 is arranged on the first axial side of the second drive wheel 20b, and a fourth mounting arm 64 is arranged on the second axial side of the second drive wheel 20b.

[0045] Specifically, the mounting bracket of the single motor drive unit includes a first mounting arm 61, a second mounting arm 62, a third mounting arm 63, and a fourth mounting arm 64. The first mounting arm 61 is arranged on the first axial side of the first drive wheel 20a, the second mounting arm 62 is arranged on the second axial side of the first drive wheel 20a, and a mounting arm is arranged on both axial sides of the first drive wheel 20a to make the force on the first drive wheel more balanced. The third mounting arm 63 is arranged on the first axial side of the second drive wheel 20b, and the fourth mounting arm 64 is arranged on the second axial side of the second drive wheel 20b. A mounting arm is arranged on both axial sides of the second drive wheel 20b to make the force on the second drive wheel more balanced.

[0046] In one embodiment of the present application, a differential is provided between the first output end of the motor and the first drive wheel, or a differential is provided between the second output end of the motor and the second drive wheel. It should be understood that the differential can allow a speed difference between the first drive wheel and the second drive wheel during operation, avoid operation resistance caused by wheel diameter deviation of the drive wheels on both sides, and realize adaptive distribution of driving force of the drive wheels on both sides.

[0047] refer to Figure 4 The embodiment of the present application also provides a self-driven rail elevator, including the above-mentioned single motor drive unit, a car 70, and a guide rail, wherein the car 70 is connected to the single motor drive unit, the guide rail includes a first guide rail 30a and a second guide rail 30b, the first drive wheel 20a moves on the first guide rail 30a, and the second drive wheel 20b moves on the second guide rail 30b. The single motor drive unit is used to drive the car to rise and fall, and the motor drives the corresponding drive wheel to rotate through the reducer, so that the drive wheel moves on the corresponding guide rail and is used to drive the car to rise and fall. The above-mentioned single motor drive unit, because the two drive wheels corresponding to the two guide rails share one motor, is more compact in structure, has lower cost, and can ensure the synchronous rotation of the two drive wheels.

[0048] In one embodiment of the present application, the self-propelled rail elevator further includes a connecting arm 90, a first connecting portion on the connecting arm 90 is movably connected to the car 70, and a second connecting portion on the connecting arm 90 is movably connected to the mounting bracket 60 of the single motor drive unit. The driving wheel and the car 70 are arranged on the same side of the guide rail and are staggered up and down. Under the gravity load of the car 70, the connecting arm 90 drives the driving wheel of the single motor drive unit to press the guide rail.

[0049] Specifically, the car is limited to run along the guide rails, so the car has only one degree of freedom and cannot be turned over or moved in other directions. Figure 4 The two ends of the connecting arm are respectively movably connected to the car and the single motor drive unit. Therefore, the connecting arm is only subjected to force in the length direction. The force applied by the connecting arm to the single motor drive unit can make the driving wheel press the guide rail. When the driving source outputs power, the driving wheel rotates and moves up and down with the help of friction with the surface of the guide rail. In one technical solution, the movable connection between the connecting arm and the car and the single motor drive unit is a hinge.

[0050] It should be understood that the car and the single motor drive unit may use the same guide rail or different guide rails. In one technical solution, the first guide rail and the second guide rail are used to guide the lifting of the car and the single motor drive unit. In another technical solution, other guide rails may be provided in addition to the first guide rail and the second guide rail to guide the lifting of the car.

[0051] refer to Figure 3 and Figure 5 In one embodiment of the present application, the single motor drive unit further includes a first limiting wheel assembly and a second limiting wheel assembly, and the first limiting wheel assembly and the second limiting wheel assembly each include a plurality of limiting wheels. The first limiting wheel assembly and the second limiting wheel assembly are mounted on a mounting bracket 60 of the single motor drive unit, the first limiting wheel assembly acts on the first guide rail 30a, and the second limiting wheel assembly acts on the second guide rail 30b. Under the gravity load of the car 70, the first limiting wheel assembly and the first drive wheel 20a press the first guide rail 30a in the opposite direction, and the second limiting wheel assembly and the second drive wheel 20b press the second guide rail 30b in the opposite direction.

[0052] Specifically, the limiting wheel assembly includes a first limiting wheel assembly and a second limiting wheel assembly. Figure 6 The limiting wheel assembly 80 includes a movable bracket 81 and a limiting wheel 82. A plurality of limiting wheels 82 are arranged on the movable bracket 81. When installed on a guide rail, the plurality of limiting wheels 82 can be used for limiting in multiple directions. In a specific solution, the mounting bracket 60 of the single motor drive unit includes a first mounting arm 61, a second mounting arm 62, a third mounting arm 63, and a fourth mounting arm 64. A limiting wheel assembly is arranged on each mounting arm. The movable bracket is hinged on the corresponding mounting arm. The limiting wheel and the driving wheel clamp the corresponding guide rail.

[0053] In the present application, the output shaft of the motor has a first output end and a second output end, which respectively drive the first drive wheel and the second drive wheel on both sides, the first drive wheel moves on the first guide rail, and the second drive wheel moves on the second guide rail. The two drive wheels corresponding to the two guide rails share a motor, which is more compact in structure, lower in cost, lighter in weight, and can ensure that the two drive wheels rotate synchronously. In addition, the first drive wheel and the second drive wheel on both sides are used for driving at the same time. When one of them is damaged, the other can still provide driving force, which is safer. In addition, the drive device adopts a single motor drive solution, and the control system is simpler.

[0054] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. It should be noted that the terms used here are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, work, devices, components and / or combinations thereof.

[0056] The specific embodiments described herein are merely examples of the spirit of the present application. A person skilled in the art of the present application may make various modifications or additions to the specific embodiments described or replace them in a similar manner, but this will not deviate from the spirit of the present application or exceed the scope defined by the attached claims.

Claims

1. A single motor drive unit, characterized in that: The single motor drive unit comprises: A motor, wherein the output shaft has a first output end and a second output end, wherein the first output end is located at a first side of the motor, and the second output end is located at a second side of the motor, and the first side and the second side are opposite sides of the motor; The driving wheel comprises a first driving wheel and a second driving wheel, wherein the first driving wheel is arranged on a first side of the motor and is connected to a first output end of the motor by power; the second driving wheel is arranged on a second side of the motor and is connected to a second output end of the motor by power; the first driving wheel moves on a first guide rail, and the second driving wheel moves on a second guide rail; The reducer includes a first reducer and a second reducer, wherein the first reducer is arranged on a first side of the motor and is located between a first output end of the motor and the first driving wheel; the second reducer is arranged on a second side of the motor and is located between a second output end of the motor and the second driving wheel.

2. The single motor drive unit according to claim 1, characterized in that: The single motor drive unit further includes a brake, which includes a first brake and a second brake, wherein the first brake acts on a first output end of the motor, and the second brake acts on a second output end of the motor.

3. The single motor drive unit according to claim 2, characterized in that: The first brake is arranged between the motor and the first reducer, and the second brake is arranged between the motor and the second reducer.

4. The single motor drive unit according to claim 2, characterized in that: The first brake and the second brake are both electromagnetic brakes.

5. The single motor drive unit according to claim 1, characterized in that: The first driving wheel and the second driving wheel both include a wheel hub and a tire. The first reducer is accommodated in the wheel hub of the first driving wheel, and the second reducer is accommodated in the wheel hub of the second driving wheel.

6. The single motor drive unit according to claim 1, characterized in that: The mounting bracket of the single motor drive unit includes a first mounting arm, a second mounting arm, a third mounting arm, and a fourth mounting arm; The first mounting arm is arranged on a first axial side of the first driving wheel, and the second mounting arm is arranged on a second axial side of the first driving wheel; The third mounting arm is arranged on a first axial side of the second driving wheel, and the fourth mounting arm is arranged on a second axial side of the second driving wheel.

7. The single motor drive unit according to claim 1, characterized in that: A differential is provided between the first output end of the motor and the first driving wheel, or between the second output end of the motor and the second driving wheel.

8. A self-propelled rail elevator, characterized in that: include: A single motor drive unit as claimed in any one of claims 1 to 7; A car connected to a single motor drive unit; The guide rail comprises a first guide rail and a second guide rail. The first driving wheel moves on the first guide rail, and the second driving wheel moves on the second guide rail.

9. The self-propelled rail elevator according to claim 8, characterized in that: The self-driven rail elevator further comprises a connecting arm; a first connecting portion on the connecting arm is movably connected to the car, and a second connecting portion on the connecting arm is movably connected to a mounting bracket of the single motor drive unit; The driving wheel and the car are arranged on the same side of the guide rail and are staggered up and down; under the gravity load of the car, the connecting arm drives the driving wheel of the single motor drive unit to press the guide rail.

10. The self-propelled rail elevator according to claim 9, characterized in that: The single motor drive unit further comprises a first limiting wheel assembly and a second limiting wheel assembly, wherein the first limiting wheel assembly and the second limiting wheel assembly both comprise a plurality of limiting wheels; The first limiting wheel assembly and the second limiting wheel assembly are mounted on a mounting bracket of the single motor drive unit; the first limiting wheel assembly acts on the first guide rail, and the second limiting wheel assembly acts on the second guide rail; Under the gravity load of the car, the first limiting wheel assembly and the first driving wheel press the first guide rail in opposite directions, and the second limiting wheel assembly and the second driving wheel press the second guide rail in opposite directions.

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