Wide-screen power motor stepless speed regulation device for electric vehicle

Abstract

A wide-screen power motor stepless speed regulation device for an electric vehicle relates to the technical field of electric vehicle motors and is characterized in that the wide-screen power motor stepless speed regulation device comprises a U-shaped fixed base, two parallel rotating shafts are rotatably arranged between two sides of the fixed base, the rotating shafts are respectively provided with a same speed regulation belt pulley, and the speed regulation belt pulley is connected with the fixed base. The speed regulation belt wheels are conical, the arrangement directions of the two speed regulation belt wheels are opposite, a speed regulation belt is arranged between the two speed regulation belt wheels, clamping blocks are arranged on the two sides, making contact with the speed regulation belt wheels, of the two ends of the speed regulation belt in a sliding mode, and a pushing plate is arranged between the clamping blocks. A lead screw is arranged on the side portion of the pushing plate and connected with the side portion of the fixed base through threads. The speed regulation device is simple in structure and technology, low in production and manufacturing cost, high in speed regulation response speed and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicle motors, in particular to a stepless speed regulating device for a wide-screen power motor for an electric vehicle. Background Art

[0002] The stepless speed regulation device of the motor is designed to achieve continuous adjustment of the speed of the motor during operation. In traditional motor speed regulation systems, discrete speed regulation gears are often used or the speed regulation is achieved by changing the input voltage of the motor. However, these methods have some limitations, such as impact when switching gears, low speed regulation accuracy, slow response speed and other problems. In traditional speed regulation methods, some methods may cause the efficiency of the motor to decrease under non-rated conditions. Through stepless speed regulation technology, load requirements can be better matched and the energy efficiency of motor operation can be improved. The stepless speed regulation device of the electric motor is an important part of the electric vehicle motor control system. It achieves precise control of the motor output power by changing the working state and parameters of the motor. This technology involves multiple aspects such as motor control, power electronic devices and control algorithms. The structure and technology of the existing stepless speed regulation device of the electric motor of an electric vehicle are relatively complex, the production cost is high, and the speed regulation response speed is slow. Utility Model Content

[0003] The utility model aims to provide a stepless speed regulating device for a wide-screen power motor for an electric vehicle, so as to solve the problems that the structure and technology of the traditional technology are relatively complex, the production cost is high, and the speed of speed regulation response is slow.

[0004] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0005] A stepless speed regulating device for a wide-screen power motor for an electric vehicle, characterized in that it includes a fixed base, the fixed base is U-shaped, two rotating shafts parallel to each other are rotatably arranged between the two sides of the fixed base, an identical speed regulating pulley is respectively arranged on the rotating shaft, the speed regulating pulley is tapered, and the two speed regulating pulleys are arranged in opposite directions, a speed regulating belt is arranged between the two speed regulating pulleys, both ends of the speed regulating belt are slidably arranged with clamping blocks on both sides in contact with the speed regulating pulleys, a pushing plate is arranged between the clamping blocks, a screw rod is arranged on the side of the pushing plate, and the screw rod is connected to the side of the fixed base by a thread.

[0006] According to a preferred technical solution, the engaging block is U-shaped, and the two sides of the U-shaped opening of the engaging block are just engaged with the two sides of the speed regulating belt. The engaging part between the U-shaped opening of the engaging block and the speed regulating belt is provided with a ball embedded in the engaging block.

[0007] According to a preferred technical solution, the outer side of the speed regulating belt is provided with a metal strip embedded in the interior of the speed regulating belt.

[0008] According to a preferred technical solution, a speed regulating hand wheel is fixedly provided on the outer end side of the screw rod.

[0009] According to a preferred technical solution, a surface of the engaging block close to the speed regulating pulley is configured as an arc-shaped surface.

[0010] According to a preferred technical solution, both end surfaces of the two speed regulating pulleys are flush with each other.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] Simplified structure: The utility model adopts a U-shaped fixed base, and two parallel rotating shafts are provided with conical speed-adjusting pulleys, which are connected by speed-adjusting belts, making the whole structure relatively simple. This helps to reduce the number of parts and improve assembly efficiency.

[0013] Cost reduction: Due to the simplified structure, the number of parts used is reduced, and the manufacturing cost is reduced. This is a beneficial economic benefit for the electric vehicle industry and can promote the large-scale production and market promotion of products.

[0014] Improve speed response speed: By using a speed belt to connect two relatively parallel speed pulleys, a relatively smooth stepless speed regulation can be achieved. This helps to improve the speed response speed of electric vehicles and enhance the driving experience.

[0015] The locking block in the utility model adopts a U-shaped design and is provided with a ball embedded in the locking block, which helps to ensure a stable connection between the speed regulating belt and the locking block, improves the reliability and durability of the system, and by providing a metal strip embedded in the speed regulating belt on the outer side of the speed regulating belt, the rigidity of the speed regulating belt can be increased, thereby improving the speed regulation accuracy and stability.

[0016] Easy to operate: A speed regulating hand wheel is fixedly provided on the outer end side of the pressing block screw rod in the utility model solution, so that the user can easily perform speed regulation operation through the hand wheel, thereby improving the usability of the device.

[0017] Reasonable structure: the side of the engaging block close to the speed regulating belt pulley is set as an arc surface, which is conducive to the smooth engagement of the engaging block and the speed regulating belt, and further optimizes the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the locking block and the push plate of the utility model;

[0020] Figure 3 This is a schematic diagram of the belt structure of the utility model

[0021] In the figure: 1 fixed base, 2 rotating shaft, 3 speed regulating pulley, 4 speed regulating belt, 5 engaging block, 6 pushing plate, 7 screw rod, 8 ball bearing, 9 metal strip, 10 speed regulating hand wheel. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 A stepless speed regulating device for a wide-screen power motor for electric vehicles comprises a fixed base 1, the fixed base 1 is U-shaped, two rotating shafts 2 are rotatably arranged between the two sides of the fixed base 1, and an identical speed regulating pulley 3 is arranged on the rotating shaft 2, the speed regulating pulley 3 is tapered, and the two speed regulating pulleys 3 are arranged in opposite directions, a speed regulating belt 4 is arranged between the two speed regulating pulleys 3, and the two ends of the speed regulating belt are slidably arranged with a clamping block 5 on both sides in contact with the speed regulating pulley 3, a push plate 6 is arranged between the clamping blocks 5, and a screw rod 7 is arranged on the side of the push plate 6, and the screw rod 7 is connected to the side of the fixed base 1 by a thread. A speed regulating handwheel 10 is fixedly arranged on the outer end side of the screw rod 7. The two end surfaces of the speed regulating pulley 3 are flush with each other.

[0024] like Figure 2 As shown, the clamping block 5 is U-shaped, and the two sides of the U-shaped opening of the clamping block 5 are just clamped on the two sides of the speed regulating belt 4. The clamping position between the U-shaped opening of the clamping block 5 and the speed regulating belt 4 is provided with a ball 8 embedded in the clamping block 5. One side of the clamping block 5 close to the speed regulating pulley 3 is set as an arc surface.

[0025] like Figure 3 As shown, the outer side of the speed regulating belt 4 is provided with a metal strip 9 embedded in the speed regulating belt 4 .

[0026] like Figure 1-3As shown, the utility model is to rotate the hand wheel 10 so that the push plate 6 can be moved back and forth through the screw rod 7 and the fixed base 1, so that the engaging block drives the belt to move on the wheel surfaces of the two speed regulating pulleys 3. Since the two speed regulating pulleys 3 are identical and in opposite directions, the distance between the contact points of the two speed regulating pulleys 3 and the speed regulating belt 4 is constant. At the same time, the transmission coefficient between the two speed regulating pulleys 3 is constantly changing, thereby achieving the purpose of stepless speed regulation.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stepless speed regulating device for a wide-screen power motor for an electric vehicle, characterized in that: The invention comprises a fixed base (1), wherein the fixed base (1) is U-shaped, and two rotating shafts (2) are rotatably arranged between the two sides of the fixed base (1), and two identical speed regulating pulleys (3) are arranged on the rotating shafts (2). The speed regulating pulleys (3) are tapered, and the two speed regulating pulleys (3) are arranged in opposite directions. A speed regulating belt (4) is arranged between the two speed regulating pulleys (3), and two ends of the speed regulating belt are slidably arranged on both sides where the speed regulating pulleys (3) are in contact, and a pushing plate (6) is arranged between the pushing plates (6), and a screw rod (7) is arranged on the side of the pushing plate (6), and the screw rod (7) is connected to the side of the fixed base (1) through a thread.

2. The stepless speed regulating device for a wide-screen power motor for an electric vehicle according to claim 1, characterized in that: The engaging block (5) is U-shaped, and the two sides of the U-shaped opening of the engaging block (5) are just engaged with the two sides of the speed regulating belt (4). The engaging part between the U-shaped opening of the engaging block (5) and the speed regulating belt (4) is provided with a ball (8) embedded in the inside of the engaging block (5).

3. The stepless speed regulating device for a wide-screen power motor for an electric vehicle according to claim 1, characterized in that: The outer side of the speed regulating belt (4) is provided with a metal strip (9) embedded in the interior of the speed regulating belt (4).

4. The stepless speed regulating device for a wide-screen power motor for an electric vehicle according to claim 1, characterized in that: A speed regulating hand wheel (10) is fixedly arranged on the outer end side of the screw rod (7).

5. A stepless speed regulating device for a wide-screen power motor for an electric vehicle according to claim 1 or 2, characterized in that: A surface of the engaging block (5) close to the speed regulating pulley (3) is arranged as an arc-shaped surface.

6. The stepless speed regulating device for a wide-screen power motor for an electric vehicle according to claim 1, characterized in that: Both end surfaces of the two speed regulating pulleys (3) are flush with each other.

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