Speed reducer for escalator

Abstract

The utility model relates to the technical field of speed reducers, in particular to a speed reducer for an escalator, which comprises a motor, a shell and a multi-stage gear transmission mechanism, the multi-stage gear transmission mechanism is arranged in the shell, and a motor shaft of the motor extends into the shell and is connected with the multi-stage gear transmission mechanism; a motor shaft is connected with a sun gear, a reduction gear and the sun gear are installed on the sun gear, a small gear A is arranged on one side of the sun gear, the small gear A is connected with the sun gear in a meshed mode, and one side of the small gear A is connected with a driving gear A. By adopting the design of multi-stage gear transmission, force is effectively dispersed to a plurality of gear assemblies, and the load borne by a single gear is reduced, so that the service life of the whole transmission structure is prolonged, the failure rate caused by excessive abrasion of parts is reduced, the maintenance frequency is reduced, and the service life of the whole transmission structure is prolonged. And the availability and the reliability of the equipment are indirectly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of speed reducers, in particular to a speed reducer for an escalator. Background Art

[0002] At present, the speed reducer of an escalator is a key mechanical device, which is mainly used to convert the high-speed rotation of an electric motor into a low-speed rotation suitable for the running speed of the escalator. The core function of the speed reducer is to reduce the speed while ensuring sufficient torque, so that the escalator can run smoothly and safely.

[0003] At present, the existing speed reducers for escalators rely on transmission parts such as chains and sprockets. These components not only have a relatively high material cost, but also require more technological steps in the manufacturing process, resulting in an increase in the overall manufacturing cost. In addition, the chain and sprocket system is relatively complex, the installation is complex, the load borne by a single gear is high, and the components are prone to failures caused by excessive wear, increasing the use cost.

[0004] Therefore, a speed reducer for an escalator that can solve the above problems is needed. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a speed reducer for an escalator. By adopting the design of multi-stage gear transmission, the force is effectively dispersed to multiple gear components, reducing the load borne by a single gear, thereby extending the service life of the entire transmission structure, reducing the failure rate caused by excessive wear of components, reducing the maintenance frequency, and indirectly improving the usability and reliability of the equipment.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: a speed reducer for an escalator, including an electric motor, a housing and a multi-stage gear transmission mechanism. The multi-stage gear transmission mechanism is arranged inside the housing, and the motor shaft of the electric motor extends into the housing and is connected to the multi-stage gear transmission mechanism;

[0007] A reduction gear and a sun gear are installed on the motor shaft. A pinion A is arranged on one side of the sun gear, and the pinion A is meshed and connected with the sun gear. A drive gear A is connected to one side of the pinion A, and an output shaft A is installed in the drive gear A; A drive gear B is connected to the other side of the sun gear, and an output shaft B is installed in the drive gear B.

[0008] Further, the reduction gear includes a planetary gear A and a planetary gear B, and both the planetary gear A and the planetary gear B are meshed and connected with the sun gear.

[0009] Further, one side of the pinion gear A is meshed and connected with an intermediate gear A, and the intermediate gear A is meshed and connected with the driving gear A.

[0010] Further, the other side of the sun gear is meshed and connected with an intermediate gear B, and the intermediate gear B is meshed and connected with the driving gear B.

[0011] The advantages of the present utility model are as follows: The present utility model provides a speed reducer for an escalator, and the present utility model has the following advantages:

[0012] 1. The multi-stage gear transmission structure adopted by the present utility model reduces the demand for transmission components such as chains and sprockets, simplifies the structural design, thereby reducing the material cost and manufacturing cost. In addition, due to the compactness and simplicity of the gear transmission structure, it also reduces the man-hours required for installation and maintenance, further reducing the total cost of ownership. Through the design of adopting multi-stage gear transmission, the force is effectively distributed to multiple gear components, reducing the load borne by a single gear, thereby extending the service life of the entire transmission structure, reducing the failure rate caused by excessive wear of components, reducing the maintenance frequency, and indirectly improving the availability and reliability of the equipment.

[0013] 2. The present utility model is designed with two output shafts, which can be used to drive the handrail and the pedal of the escalator respectively. Such a design enables the handrail and the pedal to work independently, ensuring the synchronism and stability between the two, and improving the safety and comfort of passengers. In addition, the design of dual-axis drive also provides convenience for future maintenance and upgrade, because the handrail or pedal system can be repaired separately without affecting the function of the other part.

[0014] In summary, the design of this speed reducer not only performs well in cost control, but also can significantly improve the transmission efficiency and extend the service life of the equipment, and is particularly suitable for public places with high requirements for reliability and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 is a schematic cross-sectional structure diagram of the present utility model;

[0017] Figure 2 is Figure 1 a partial enlarged structure diagram of

[0018] Among them:

[0019] 1. Motor; 2. Planetary gear A; 3. Housing;

[0020] 4. Pinion gear A; 5. Pinion gear B; 6. Intermediate gear A;

[0021] 7. Intermediate gear B; 8. Sun gear; 9. Driving gear A;

[0022] 10. Driving gear B; 11. Output shaft A; 12. Output shaft B;

[0023] 13. Planetary gear B; 14. Motor shaft. Specific implementation mode

[0024] The technical solutions of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. The terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0026] Embodiment 1:

[0027] Figure 1 It is a schematic cross-sectional structure diagram of the present utility model, Figure 2 is Figure 1 a partially enlarged structure diagram of, as shown in Figure 1 and Figure 2A speed reducer for an escalator as shown includes a motor 1, a housing 3 and a multi-stage gear transmission mechanism. The motor 1 is the power source of the entire speed reducer. It converts electrical energy into mechanical energy, i.e., rotational motion. The motor shaft 14 of the motor 1 extends into the housing 3 and is connected to the multi-stage gear transmission mechanism, transmitting the power of high-speed rotation to the gear transmission mechanism inside the speed reducer. The housing 3 mainly plays a role of protection and support. It houses all the internal gear components, prevents external impurities from entering, and provides a closed space for the gears, which helps with lubrication and reduces wear.

[0028] The multi-stage gear transmission mechanism in the present utility model is arranged inside the housing 3. The multi-stage gear transmission mechanism is responsible for converting the high-speed rotation of the motor 1 into a low-speed, high-torque output suitable for the operation of the escalator. This series of gears reduces the speed step by step through different meshing methods while increasing the torque. The motor shaft 14 of the motor 1 extends into the housing 3 and is connected to the multi-stage gear transmission mechanism. The gear transmission structure in the present utility model has a high transmission efficiency. Compared with chain transmission, the direct meshing between gears reduces the loss during the kinetic energy transmission process. This means that the same electrical input can be converted into a greater mechanical output, improving the energy utilization efficiency. Especially in occasions that require continuous and stable operation, such as escalators in airports and railway stations, this efficient kinetic energy transmission structure can significantly reduce energy consumption and lower the operating cost.

[0029] In the present utility model, a sun gear 8 and a reduction gear are installed on the motor shaft 14. The sun gear 8 is the central gear in the planetary gear system. It is directly connected to the motor shaft 14 of the motor 1 and receives the power of high-speed rotation from the motor 1. The sun gear 8 transmits the power to the pinion A4 and the intermediate gear B7 by meshing with the surrounding planetary gears. A pinion A4 is arranged on one side of the sun gear 8. The pinion A4 is meshed and connected with the sun gear 8. Its main task is to receive power from the sun gear 8 and transmit it to the subsequent intermediate gear A6. The pinion A4 helps to further disperse the load and ensure the smoothness and efficiency during the transmission process. In the present utility model, an intermediate gear A6 is meshed and connected on one side of the pinion A4. The intermediate gear A6 is meshed and connected with the drive gear A9. The role of the intermediate gear A6 is to serve as an intermediate link for power transmission to ensure that the power is smoothly transmitted from the sun gear 8 system to the final output shaft A11.

[0030] On one side of the pinion A4 of the present utility model, a driving gear A9 is connected. An output shaft A11 is installed inside the driving gear A9. The driving gear A9 meshes with an intermediate gear A6 and an output shaft A11 is installed inside it. The driving gear A9 is responsible for transmitting the decelerated power to the escalator step to ensure its smooth operation. On the other side of the sun gear 8, a driving gear B10 is connected. An output shaft B12 is installed inside the driving gear B10. The driving gear B10 is responsible for transmitting the decelerated power to the escalator handrail. The output shaft A11 is an output end of the speed reducer and is directly connected to the escalator step component. The rotational speed and torque of the output shaft A11 have been adjusted to a suitable speed for driving the escalator through a multi-stage gear transmission mechanism. The reduction gears in the present utility model include a planetary gear A2 and a planetary gear B13. The planetary gear system is the core part of the speed reducer. The planetary gear A2 and the planetary gear B13 rotate around the sun gear 8 and mesh with the internal gear ring (which is stationary). This compound movement of the planetary gears achieves the effect of speed reduction.

[0031] On the other side of the sun gear 8 in the present utility model, an intermediate gear B7 is meshed and connected. The intermediate gear B7 is meshed and connected with the driving gear B10. The function of the intermediate gear B7 is similar to that of the intermediate gear A6, serving as an intermediate link for power transmission to ensure the smooth transmission of power from the sun gear 8 system to the output shaft B12.

[0032] Through the collaborative work of the above components, the entire speed reducer structure can achieve efficient and stable power transmission, ensuring the continuous and stable operation of the escalator in high-traffic places such as airports and railway stations.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them. Although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features. And these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A speed reducer for an escalator, comprising a motor (1), a housing (3) and a multi-stage gear transmission mechanism. The multi-stage gear transmission mechanism is arranged inside the housing (3), and the motor shaft (14) of the motor (1) extends into the housing (3) and is connected to the multi-stage gear transmission mechanism. It is characterized in that A reduction gear and a sun gear (8) are installed on the motor shaft (14). A pinion A (4) is arranged on one side of the sun gear (8), and the pinion A (4) is meshed and connected with the sun gear (8). A drive gear A (9) is connected to one side of the pinion A (4), and an output shaft A (11) is installed in the drive gear A (9). A drive gear B (10) is connected to the other side of the sun gear (8), and an output shaft B (12) is installed in the drive gear B (10).

2. The speed reducer for an escalator according to claim 1, characterized in that: The reduction gear includes a planetary gear A (2) and a planetary gear B (13), and both the planetary gear A (2) and the planetary gear B (13) are meshed and connected with the sun gear (8).

3. A speed reducer for an escalator according to claim 1, characterized in that: One side of the pinion A (4) is meshed with an intermediate gear A (6), and the intermediate gear A (6) is meshed and connected with the drive gear A (9).

4. A speed reducer for an escalator according to claim 1, characterized in that: The other side of the sun gear (8) is meshed with an intermediate gear B (7), and the intermediate gear B (7) is meshed and connected with the drive gear B (10).

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