Toothed traction machine

Abstract

The invention discloses a toothed traction machine which comprises a machine base, a planetary reducer and a traction wheel assembly are arranged in the machine base, a rotor assembly is arranged on one side of the planetary reducer, the planetary reducer is connected with the rotor assembly and the traction wheel assembly, a stator iron core is arranged outside the rotor assembly, and the traction wheel assembly is connected with the stator iron core. The rotor assembly and the stator iron core are both arranged in the stator shell, the stator shell is arranged on one side of the machine base and connected with the machine base, the other side of the machine base is provided with a machine base end cover, and one side of the machine base end cover is provided with a brake. The traction wheel and the planetary reducer are compactly designed, the torque is amplified through the planetary reducer, the space of the stator iron core and the space of the rotor assembly are reduced, and cost is saved; the planetary reducer enables the traction wheel to obtain a large output torque at a low input rotating speed, so that the transmission efficiency is improved, and the energy loss is reduced.

Description

Technical Field

[0001] The present invention relates to the field of traction machines, and particularly to a toothed traction machine. Background Art

[0002] Traditional traction machines are mainly directly driven by motors to drive the traction wheels. The rotational speed and torque output of the motor are directly matched with the requirements of the traction wheel, without an intermediate speed reducer. In order to output a large torque, generally, the stator and rotor components need to be made very large, resulting in high costs, large occupied space, poor stability of torque output, and more energy losses during power transmission. Summary of the Invention

[0003] The purpose of the present invention is to provide a low-speed and large-load traction machine that can solve the above problems.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] A toothed traction machine includes a machine base, a planetary speed reducer is arranged inside the machine base, and a traction wheel assembly is arranged outside the planetary speed reducer. A rotor assembly is arranged on one side of the planetary speed reducer. The planetary speed reducer is respectively connected to the rotor assembly and the traction wheel assembly. A stator core is arranged outside the rotor assembly. Both the rotor assembly and the stator core are arranged inside the stator housing. The rotor assembly is arranged on the stator housing through a first bearing and a second bearing. The stator housing is arranged on one side of the machine base and connected to the machine base. A machine base end cover is arranged on the other side of the machine base. The axle of the traction wheel assembly is arranged on the machine base end cover through a third bearing. A brake is arranged on one side of the machine base end cover.

[0006] Preferably, the rotor assembly includes a rotating shaft and a rotor sleeved on the rotating shaft. The input end of the planetary speed reducer is connected to the rotating shaft, and the output end of the planetary speed reducer is connected to the axle.

[0007] Preferably, the rotating shaft and the axle are coaxially arranged.

[0008] Preferably, both the stator housing and the machine base end cover are provided with bearing chambers. The two bearing chambers of the stator housing are respectively arranged on both sides of the rotor. The first bearing and the second bearing are sleeved on the rotating shaft, and the first bearing and the second bearing are respectively arranged in the two bearing chambers of the stator housing. The third bearing is sleeved on the axle. The axle penetrates through the machine base end cover, and the third bearing is arranged in the bearing chamber of the machine base end cover.

[0009] Preferably, an encoder is arranged at the end of the rotating shaft far from the planetary speed reducer.

[0010] Preferably, there are flat keys on both the axle and the rotating shaft. The axle is connected to the planetary reducer, the axle is connected to the brake, and the rotating shaft is connected to the planetary reducer by flat keys.

[0011] The beneficial effects of the present invention are as follows: The traction wheel and the planetary reducer of the present invention are compactly designed. By using the planetary reducer to amplify the torque, the space of the stator core and the rotor assembly is reduced, saving costs. The planetary reducer enables the traction wheel to obtain a large output torque at a low input speed, improving the transmission efficiency, reducing energy loss, while reducing the load and starting current of the motor and extending the service life of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of the present invention;

[0013] Figure 2 is a front view structural diagram of the present invention;

[0014] Figure 3 is Figure 1 a cross-sectional structural diagram of

[0015] Wherein: machine base 1, planetary reducer 2, input end 21, output end 22, traction wheel assembly 3, traction wheel 31, axle 32, third bearing 33, rotor assembly 4, rotating shaft 41, rotor 42, first bearing 43, second bearing 44, stator core 5, stator housing 6, machine base end cover 7, brake 8, bearing chamber 9, encoder 10. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The technical solutions of this patent will be further described in detail below in conjunction with the specific embodiments.

[0017] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention 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 should not be construed as a limitation to the present invention.

[0018] Such as Figures 1 to 3As shown in the figure, the present invention provides a toothed traction machine, which includes a machine base 1. Inside the machine base 1, a planetary speed reducer 2 and a traction wheel assembly 3 arranged outside the planetary speed reducer 2 are provided. The traction wheel assembly 3 includes a traction wheel 31 and a wheel shaft 32 connecting the traction wheel 31. The wheel shaft 32 of the present invention can be made of high-strength alloy steel, having good toughness and anti-fatigue performance. On one side of the planetary speed reducer 2, a rotor assembly 4 is provided. The rotor assembly 4 includes a rotating shaft 41 and a rotor 42 sleeved on the rotating shaft 41. The rotating shaft 41 and the wheel shaft 32 are coaxially arranged. The input end 21 of the planetary speed reducer 2 is connected to the rotating shaft 41 of the rotor assembly 4, which can convert high speed into low speed suitable for the operation of the traction wheel 31 and transmit the output torque to the inside of the planetary speed reducer 2 through the rotating shaft 41 to prepare for subsequent torque amplification. The output end 22 of the planetary speed reducer 2 is connected to the wheel shaft 32 of the traction wheel assembly 3, and transmits the power after deceleration and torque amplification by the planetary speed reducer 2 to the traction wheel 31 through the wheel shaft 32. The use of the planetary speed reducer 2 in this practicality can also reduce vibration and noise during operation, improving the stability and comfort of the equipment.

[0019] Outside the rotor assembly 4, a stator core 5 is provided. Both the rotor assembly 4 and the stator core 5 are arranged inside a stator housing 6. The rotor assembly 4 is arranged on the stator housing 6 through a first bearing 43 and a second bearing 44. The stator housing 6 is arranged on one side of the machine base 1 and connected to the machine base 1. On the other side of the machine base 1, a machine base end cover 7 is provided. The wheel shaft 32 of the traction wheel assembly 3 is arranged on the machine base end cover 7 through a third bearing 33. On one side of the machine base end cover 7, a brake 8 is provided. The brake 8 of the present invention can be a disc brake, and the brake disc is coaxially arranged with the wheel shaft 32 for emergency braking.

[0020] Both the stator housing 6 and the machine base end cover 7 are provided with bearing chambers 9. The two bearing chambers 9 of the stator housing 6 are respectively arranged on both sides of the rotor 42. The first bearing 43 and the second bearing 44 are sleeved on the rotating shaft 41, and the first bearing 43 and the second bearing 44 are respectively arranged in the two bearing chambers 9 of the stator housing 6. The third bearing 33 is sleeved on the wheel shaft 32. The wheel shaft 32 penetrates the machine base end cover 7, and the third bearing 33 is arranged in the bearing chamber 9 of the machine base end cover 7.

[0021] Further, at one end of the rotating shaft 41 away from the planetary speed reducer 2, an encoder 10 is provided for monitoring the rotation speed of the rotating shaft 41. There are flat keys (not shown) on both the wheel shaft 32 and the rotating shaft 41. The wheel shaft 32 is connected to the planetary speed reducer 2, the wheel shaft 32 is connected to the brake 8, and the rotating shaft is connected to the planetary speed reducer 2 by flat keys.

[0022] The traction wheel 31 and the planetary speed reducer 2 of the present invention are compactly designed. By using the planetary speed reducer 2 to amplify the torque, the space of the stator core 5 and the rotor assembly 4 is reduced, saving costs. The planetary speed reducer 2 enables the traction wheel 31 to obtain a large output torque at a low input speed, improving the transmission efficiency, reducing energy loss, while reducing the load and starting current of the motor and extending the service life of the motor.

[0023] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claimed invention.

[0024] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A toothed traction machine, comprising a machine base, characterized in that: A planetary reducer and a traction wheel assembly arranged outside the planetary reducer are arranged in the base, a rotor assembly is arranged on one side of the planetary reducer, the planetary reducer is connected to the rotor assembly and the traction wheel assembly respectively, a stator core is arranged outside the rotor assembly, the rotor assembly and the stator core are both arranged inside the stator housing, the rotor assembly is arranged on the stator housing through a first bearing and a second bearing, the stator housing is arranged on one side of the base and connected to the base, a base end cover is arranged on the other side of the base, the wheel axle of the traction wheel assembly is arranged on the base end cover through a third bearing, and a brake is arranged on one side of the base end cover.

2. The toothed traction machine according to claim 1, characterized in that: The rotor assembly comprises a rotating shaft and a rotor sleeved on the rotating shaft. The input end of the planetary reducer is connected to the rotating shaft, and the output end of the planetary reducer is connected to the wheel axle.

3. The toothed traction machine according to claim 1, characterized in that: The rotating shaft and the wheel axle are coaxially arranged.

4. The toothed traction machine according to claim 1, characterized in that: The stator housing and the base end cover are both provided with bearing chambers, the two bearing chambers of the stator housing are respectively arranged on both sides of the rotor, the first bearing and the second bearing are sleeved on the rotating shaft, and the first bearing and the second bearing are respectively arranged in the two bearing chambers of the stator housing, the third bearing is sleeved on the wheel axle, the wheel axle passes through the base end cover, and the third bearing is arranged in the bearing chamber of the base end cover.

5. The toothed traction machine according to claim 1, characterized in that: An encoder is arranged at one end of the rotating shaft away from the planetary reducer.

6. The toothed device according to claim 1, characterized in that: The wheel axle and the rotating shaft are both provided with flat keys, and the wheel axle and the planetary reducer, the wheel axle and the brake, and the rotating shaft and the planetary reducer are all connected by flat keys.

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