Traction machine and traction machine system applied by traction machine

Abstract

The traction machine comprises a permanent magnet synchronous motor, a brake, a reduction gearbox and a traction wheel, a motor shaft of the motor is mechanically connected with the input shaft end of the reduction gearbox, the brake acts on the input shaft end of the reduction gearbox, the output shaft end of the reduction gearbox is connected with the traction wheel, and the output shaft end of the traction wheel is connected with the permanent magnet synchronous motor. The permanent magnet synchronous motor is characterized by further comprising a motor controller, the motor controller is installed at one end of the permanent magnet synchronous motor, a first water cooling channel is arranged in a shell of the motor controller, a second water cooling channel is arranged in a shell of the permanent magnet synchronous motor, and the first water cooling channel is communicated with the second water cooling channel. According to the tractor, the motor controller is integrated, water cooling channels are additionally arranged in the motor controller and the permanent magnet synchronous motor, liquid is used for rapid cooling, miniaturization design of the controller is facilitated, the size is small, the cooling effect is good, and installation is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a traction machine and the traction machine system applied thereto. BACKGROUND

[0002] The traction machine is a power component in the elevator system, responsible for driving the elevator car to ascend and descend; with the development of high-rise buildings, high working time is required for the use time of the elevator, the commonly used elevator traction machine is an outer rotor type permanent magnet synchronous gearless traction machine, the motor thereof is in a natural cooling mode, and the slow heat dissipation of the natural cooling mode during the working process of the elevator may cause the traction machine to stop due to thermal protection, resulting in poor experience that the elevator cannot be used; moreover, the outer rotor type permanent magnet gearless motor has a large outer diameter, the whole traction machine has a large weight, and the installation process is not very convenient, and large lifting equipment for supporting installation is required; the controller of the traction machine is a natural cooling controller, which has a large volume and weight and is inconvenient to install. SUMMARY

[0003] The utility model provides a kind of traction machine and the traction machine system applied thereto, to solve the problem of poor heat dissipation effect of traction machine in prior art.

[0004] The technical scheme of the utility model is as follows:

[0005] The utility model provides a kind of traction machine, including permanent magnet synchronous motor, brake, reduction gearbox and traction wheel, the motor shaft of motor is mechanically connected with the input shaft end of reduction gearbox, brake acts on the input shaft end of reduction gearbox, the output shaft end of reduction gearbox is connected with traction wheel, characterized by further comprising motor controller, motor controller is installed in one end of the permanent magnet synchronous motor, first water cooling passage is equipped in the shell of motor controller, second water cooling passage is equipped in the casing of permanent magnet synchronous motor, and first water cooling passage is communicated with second water cooling passage.

[0006] The friction plate of the brake is acted on the input shaft end of the reduction gear through the brake shaft sleeve.

[0007] The casing of the permanent magnet synchronous motor is axially provided with a brake mounting bracket, and the brake is mounted on the brake mounting bracket.

[0008] The motor controller is provided with a control panel and a rotary transformer, the rotary transformer includes a rotor, a stator and a stator fixing cover, the stator is mounted on the shell of the motor controller, the stator fixing cover covers the stator, and the rotor is connected with the motor shaft of the permanent magnet synchronous motor.

[0009] The stator fixing cover is provided with a wire outlet hole, and the signal line of the rotary transformer passes through the wire outlet hole and is connected with the control panel.

[0010] The output shaft of the permanent magnet synchronous motor has a smaller diameter than the input shaft end of the reduction box, and the brake shaft sleeve is installed on the input shaft end of the reduction box.

[0011] Or the output shaft of the permanent magnet synchronous motor has a larger diameter than the input shaft end of the reduction box, and the brake shaft sleeve is installed on the output shaft of the permanent magnet synchronous motor.

[0012] The second object of the utility model provides a traction machine system, including traction machine, its characterized in be: still include water pump, water tank and radiator, the traction machine is above-mentioned traction machine, water pump outlet and the pipeline interface connection of first water cooling channel, water tank is connected with water pump inlet, and the other end of water tank is connected with the one end of radiator, and the other end of radiator is connected with the pipeline interface of second water cooling channel.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] 1, the traction machine, including permanent magnet synchronous motor, brake, reduction box and traction wheel, motor shaft and the input shaft end mechanical connection of reduction box of motor, brake acts on the input shaft end of reduction box, and the output shaft end of reduction box is connected with traction wheel, its characterized in be: still include motor controller, motor controller installs in one end of permanent magnet synchronous motor, and the shell of motor controller is equipped with first water cooling channel, and the shell of permanent magnet synchronous motor is equipped with second water cooling channel, and first water cooling channel is communicated with second water cooling channel.

[0015] 2, other advantages of the utility model are described in detail in the embodiment part. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The traction machine provided in the utility model embodiment one provides a structure schematic view;

[0017] Figure 2 The traction machine provided in the utility model embodiment one provides a structure schematic view;

[0018] Figure 3 For Figure 2 The enlarged view of A of the traction machine provided in the utility model embodiment two;

[0019] Figure 4 The traction machine provided in the utility model embodiment two provides a structure schematic view;

[0020] Figure 5 The traction machine system provided in the utility model embodiment three provides a structure schematic view. DETAILED DESCRIPTION

[0021] 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.

[0022] Example 1:

[0023] like Figures 1 to 3 As shown, this embodiment provides a traction machine, including a permanent magnet synchronous motor 2, a brake 3, a gearbox 4, and a traction sheave 5. The motor shaft 23 of the motor 2 is mechanically connected to the input shaft end 41 of the gearbox 4. The brake 3 acts on the input shaft end 41 of the gearbox 4. The output shaft end 42 of the gearbox 4 is connected to the traction sheave 5. The feature is that it also includes a motor controller 1, which is installed at one end of the permanent magnet synchronous motor 2. The housing 11 of the motor controller 1 is provided with a first water-cooling channel 12, and the housing 21 of the permanent magnet synchronous motor 2 is provided with a second water-cooling channel 22. The first water-cooling channel 12 and the second water-cooling channel 22 are connected.

[0024] The traction machine not only integrates the motor controller 1, but also incorporates water-cooling channels within both the motor controller 1 and the permanent magnet synchronous motor 2. This allows for rapid liquid cooling, facilitating a miniaturized controller design, resulting in a small size, excellent cooling effect, stable traction machine operation, and convenient installation. The first water-cooling channel 12 is connected to the second water-cooling channel 22, allowing cooling liquid to flow in from either channel to cool both the motor and the controller.

[0025] The friction pads of the brake 3 described above act on the input shaft end 41 of the reducer 4 through the brake bushing 31.

[0026] The housing 21 of the permanent magnet synchronous motor 2 described above is provided with a brake mounting bracket 24 in the axial direction, and the brake 3 is mounted on the brake mounting bracket 24.

[0027] The motor controller 1 described above includes a control board 13 and a rotary transformer 14. The rotary transformer 14 includes a rotor 141, a stator 142, and a stator mounting cover 143. The stator 142 is mounted on the housing 11 of the motor controller 1, and the stator mounting cover 143 covers the stator 142. The rotor 141 is connected to the motor shaft 23 of the permanent magnet synchronous motor 2. Replacing the position sensor encoder with the rotary transformer 14 reduces sensor costs without compromising control accuracy. The rotary transformer also has good environmental adaptability, which is beneficial for long-term stable operation.

[0028] The stator fixing cover 143 described above is provided with a cable outlet hole 144, through which the signal line 145 of the rotary transformer 14 passes and connects to the control board 13. The signal line 145 is directly electrically connected to the control board 13, resulting in good signal transmission and cost savings.

[0029] The output shaft diameter D1 of the permanent magnet synchronous motor 2 is smaller than the input shaft diameter D2 of the gearbox 4. The brake sleeve 31 is installed on the input shaft end 41 of the gearbox 4. The braking torque of the brake 3 acts on the brake sleeve 31 to achieve the effect of stopping the traction wheel 6 from rotating.

[0030] Example 2:

[0031] like Figure 4 As shown, the traction machine provided in this embodiment is similar to the traction machine described in Embodiment 1, except that:

[0032] The output shaft diameter D1 of the permanent magnet synchronous motor 2 is larger than the input shaft diameter D2 of the gearbox 4. The brake sleeve 31 is installed on the output shaft of the permanent magnet synchronous motor 2. When the braking torque of the brake 3 acts on the brake sleeve 31, the traction wheel 6 stops rotating.

[0033] Example 3:

[0034] like Figure 5 As shown, this embodiment provides a traction machine system, including a traction machine 100, characterized in that it further includes a water pump 7, a water tank 8, and a radiator 9. The traction machine 100 is the traction machine described in Embodiment 1 or Embodiment 2. The outlet of the water pump 7 is connected to the pipe interface of the first water cooling channel 12, the water tank 8 is connected to the inlet of the water pump 7, the other end of the water tank 8 is connected to one end of the radiator 9, and the other end of the radiator 9 is connected to the pipe interface of the second water cooling channel 22.

[0035] The heat generated by the motor and controller is first transferred to the liquid cooling medium through the heat dissipation system. The liquid cooling medium heats up and then flows to the radiator through a water pump and pipes. The radiator dissipates the heat of the cooling medium in the pipes. After the liquid cooling medium cools down, it flows out of the radiator and flows back into the flow channels of the controller and motor through the pipes, circulating repeatedly. All pipes are connected by flexible hoses for easy layout. The coolant medium is deionized water and antifreeze to meet the requirement that the coolant does not freeze under different temperature conditions.

[0036] Finally, it should be noted that: the above examples are used to illustrate the technical solutions of the present application, but not limited to; although the present application is described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still be modified to the technical solutions recorded in the foregoing examples, or part of the technical features are replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A traction machine comprising a permanent magnet synchronous motor (2), a brake (3), a reduction gearbox (4) and a traction sheel (5), the motor shaft (23) of the permanent magnet synchronous motor (2) is mechanically connected with the input shaft end (41) of the reduction gearbox (4), the brake (3) acts on the input shaft end (41) of the reduction gearbox (4), the output shaft end (42) of the reduction gearbox (4) is connected with the traction sheel (5), characterized in that: The motor controller (1) is installed at one end of the permanent magnet synchronous motor (2), a first water cooling channel (12) is arranged in the shell (11) of the motor controller (1), a second water cooling channel (22) is arranged in the casing (21) of the permanent magnet synchronous motor (2), and the first water cooling channel (12) and the second water cooling channel (22) are communicated.

2. A machine according to claim 1, characterized in that: The friction plate of the brake (3) is acted on the input shaft end (41) of the reduction box (4) through the brake shaft sleeve (31).

3. A machine according to claim 2, characterized in that: The brake installation support (24) is arranged on the casing (21) of the permanent magnet synchronous motor (2) in the axial direction, and the brake (3) is installed on the brake installation support (24).

4. A machine according to claim 3, characterized in that: The motor controller (1) is provided with a control board (13) and a rotary transformer (14), the rotary transformer (14) comprises a rotor (141), a stator (142) and a stator fixing cover (143), the stator (142) is installed on the shell (11) of the motor controller (1), the stator fixing cover (143) covers the stator (142), and the rotor (141) is connected with the motor shaft (23) of the permanent magnet synchronous motor (2).

5. A machine according to claim 4, characterized in that: The stator fixing cover (143) is provided with a wire outlet hole (144), and the signal line (145) of the rotary transformer (14) passes through the wire outlet hole (144) and is connected with the control board (13).

6. A machine according to any one of claims 1 to 5, characterized in that: The shaft diameter D1 of the output shaft of the permanent magnet synchronous motor (2) is smaller than the shaft diameter D2 of the input shaft end (41) of the reduction box (4), and the brake shaft sleeve (31) is installed on the input shaft end (41) of the reduction box (4).

7. A machine according to any one of claims 1 to 5, characterized in that: The shaft diameter D1 of the output shaft of the permanent magnet synchronous motor (2) is greater than the shaft diameter D2 of the input shaft end (41) of the reduction box (4), and the brake shaft sleeve (31) is installed on the output shaft of the permanent magnet synchronous motor (2).

8. A machine system comprising a machine (100), characterized by: The water pump (7), the water tank (8) and the radiator (9) are further included, the traction machine (100) is the traction machine in any one of claims 1 to 7, the water outlet of the water pump (7) is connected with the pipeline interface of the first water cooling channel (12), the water tank (8) is connected with the water inlet of the water pump (7), one end of the water tank (8) is connected with one end of the radiator (9), and the other end of the radiator (9) is connected with the pipeline interface of the second water cooling channel (22).

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