Novel electric traction machine

Abstract

The utility model provides a novel electric tractor, which relates to the technical field of power construction equipment, and comprises a rack, a traction wheel, a walking wheel and a support lever are arranged on the rack, a driving device is arranged on the side surface of the rack, the driving device comprises a motor, a speed reducer and a frequency converter, the frequency converter is used for adjusting the power frequency of the motor, and the speed reducer is connected with the motor. The motor and the traction wheel are in power connection through a speed reducer. The traction wheel is driven by the motor, an existing diesel driving mode is replaced, energy consumption is low, noise is low, the problem of environmental pollution during operation of the traction machine is greatly reduced, and meanwhile the operation process of the motor is accurately controlled by the aid of the frequency converter.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric power construction equipment technical field, concretely relates to a new electric traction machine. BACKGROUND

[0002] Through the investigation, the current transmission line tension equipment all adopt diesel engine as the power source, the power range is about between 30kw-200kw, the drive system design is that diesel engine provides high pressure hydraulic oil with hydraulic pump, high pressure oil drive motor speed reducer, the overall efficiency of equipment is about 70%, and the efficiency is low, especially the tension machine is in the passive traction working condition, energy has hydraulic heat dissipation and discharges, causes energy waste.

[0003] The domestic tension equipment manufacturer also carries out the relevant research of electric drive, but due to the restriction of energy recovery, energy storage and control technology development level, the technical route direction is limited to the tension machine, and the electric drive research of traction machine is less.

[0004] Therefore, it is necessary to provide an improved technical scheme for the above-mentioned deficiencies of the prior art. SUMMARY

[0005] The utility model discloses a new electric traction machine to solve the problem of high energy consumption, severe heating and difficult precise control of diesel traction machine.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A new electric traction machine, comprising a frame, the frame is provided with a traction wheel and a walking wheel, a drive device is installed on the side surface of the frame, the drive device comprises a motor, a speed reducer and a frequency converter, the frequency converter is used to adjust the power frequency of the motor, the motor and the traction wheel are power connected through the speed reducer, and further comprising a hydraulic auxiliary system, the hydraulic auxiliary system is used to brake the traction wheel.

[0008] Preferably, the speed reducer is a variable speed gear box, and the speed reduction ratio of the speed reducer is not less than 10:1.

[0009] Preferably, the front end of the frame is provided with a supporting lever, and the supporting lever is rotatably connected with the frame.

[0010] Preferably, the utility model further comprises a mobile power supply, and the mobile power supply is electrically connected with the frequency converter.

[0011] Preferably, the mobile power supply is provided with a generator, and when the battery of the mobile power supply cannot supply power, the generator is used to supply power.

[0012] Preferably, the generator is a diesel generator.

[0013] Preferably, the frame is further provided with a rear leg, which is movable up and down relative to the frame.

[0014] Advantages:

[0015] (1) The traction machine of the utility model adopts motor-driven traction wheel, replaces the existing diesel driving mode, does not need to consume fuel, will not produce exhaust emission, and the noise during work is far lower than that of diesel engine, which greatly reduces the environmental pollution problem during work of the traction machine;

[0016] (2) The frequency converter is arranged, which can significantly reduce the starting current of the motor when starting the traction machine, prevents the motor from being burned due to too large current during starting, and can precisely control the motor through the frequency converter, realizes precise control of the traction process, has fast response speed, responds to instructions quickly, and is flexible to adjust;

[0017] (3) The hydraulic auxiliary system is further arranged, which is used for braking the traction wheel, so that the motor braking is not needed;

[0018] (4) The mobile power supply is further arranged, which is used for supplying power for the electric traction machine, and the generator is arranged as emergency power supply. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings constituting a part of the specification of the application are used to provide further understanding of the utility model, and the schematic embodiments of the utility model and the description thereof are used to explain the utility model, and do not constitute improper limitation on the utility model. Among them:

[0020] Figure 1 It is the front view of the electric novel traction machine of the utility model.

[0021] Figure 2 It is the front view of the mobile power supply.

[0022] In the drawing: 1, frame; 2, supporting lever; 3, traction wheel; 4, motor; 5, speed reducer; 6, frequency converter; 7, mobile power supply; 8, generator; 9, hydraulic auxiliary system. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely below, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art belong to the protection scope of the utility model.

[0024] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" and "second" may explicitly or implicitly include one or more features.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection, or a connection that allows communication between the two components; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components, an indirect connection, or an interaction between two components.

[0028] The present invention will now be described in detail with reference to the embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0029] This utility model addresses the problems existing in current diesel traction machines by providing a novel electric traction machine, specifically, as follows: Figure 1 As shown, the new electric tractor includes a frame 1, with a support bar 2 fixedly connected to the rear of the frame 1. The end of the support bar 2 is provided with a pin hole, which can be connected to tractor or other tractor-like equipment to move the tractor. The front of the frame 1 is provided with a traction wheel 3, which is rotatably connected to the frame 1. The lower part of the frame 1 is provided with a traveling wheel to facilitate the movement of the tractor. A drive device is installed on the side of the frame 1 to drive the traction wheel 3 to rotate. The drive device includes a motor 4, a reducer 5, and a frequency converter 6. The frequency converter 6 is used to adjust the power frequency of the motor 4. The motor 4 and the traction wheel 3 are poweredly connected through the reducer 5.

[0030] Specifically, the reducer 5 is a variable speed gearbox, and the reduction ratio of the reducer 5 is not less than 10:1, preferably 20:1, in order to improve the traction force of the motor 4.

[0031] In a preferred embodiment of this utility model, a mobile power supply 7 is also included. The mobile power supply 7 is electrically connected to the frequency converter 6 and is used to supply power to the motor 4.

[0032] Furthermore, such as Figure 2 As shown, the mobile power supply 7 is equipped with a generator 8. When the battery of the mobile power supply 7 cannot provide power, the generator 8 supplies power to the motor 4 to prevent the tractor from failing to work properly when the power supply 7 runs out of power.

[0033] Generator 8 is a diesel generator, but generators powered by other fuels can also be selected.

[0034] In addition, it includes a hydraulic auxiliary system 9, which is used to brake the traction wheel 3.

[0035] In summary, this utility model uses a motor 4 to drive the traction wheel 3, replacing the existing diesel drive method. It does not consume fuel and does not produce exhaust emissions. Moreover, the noise level during operation is much lower than that of a diesel engine, which greatly reduces the environmental pollution problem when the traction machine is working. When starting the traction machine, the starting current of the motor 4 can be significantly reduced by the frequency converter 6 to prevent the motor 4 from burning out due to excessive current during startup. It can also precisely adjust the speed of the motor 4 to achieve precise control of the traction process.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A new electric traction machine comprising a frame, a traction wheel and a walking wheel arranged on the frame, a driving device mounted on the side of the frame, characterized in that, The driving device comprises a motor, a speed reducer, and a frequency converter, the frequency converter is used for adjusting the power frequency of the motor, the motor and the traction wheel are power-connected through the speed reducer, and a hydraulic auxiliary system is further included, and the hydraulic auxiliary system is used for braking the traction wheel.

2. An electrically powered novel traction machine according to claim 1, characterized in that The speed reducer is a variable speed gear box, and the speed reduction ratio of the speed reducer is not less than 10:

1.

3. An electrically powered novel traction machine according to claim 1, characterized in that The front end of the rack is provided with a supporting lever, and the supporting lever is rotationally connected with the rack.

4. A new electric traction machine according to any one of claims 1 to 3, characterized in that, A mobile power supply is further included, and the mobile power supply is electrically connected with the frequency converter.

5. An electrically powered novel traction machine according to claim 4, characterized in that A generator is arranged on the mobile power supply, and when the battery of the mobile power supply cannot supply power, the generator is used for power supply.

6. An electrically powered novel traction machine according to claim 5, characterized in that The generator is a diesel generator.

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