Permanent magnet frequency conversion integrated tensioning device

Abstract

The utility model relates to a permanent magnet frequency conversion integrated tensioning device which comprises a tensioning winch and a permanent magnet frequency conversion integrated machine, and the tensioning winch comprises a winch base support, a winding drum supporting shaft, a steel wire rope winding drum and a hub reduction gear. The permanent magnet frequency conversion all-in-one machine comprises a permanent magnet synchronous motor, a motor side through-wall terminal, an electromagnetic braking device, a frequency conversion side through-wall terminal and a frequency conversion unit, the steel wire rope reel is installed on the winch base support through a reel supporting shaft, a steel wire rope is wound on the steel wire rope reel, and a hub speed reducer is installed in the steel wire rope reel; the hub reduction gear is connected with a main shaft of the permanent magnet synchronous motor, an electromagnetic braking device is installed at the tail end shaft extension position of the permanent magnet synchronous motor, a motor side through-wall terminal is led out from a tail end cover of the permanent magnet synchronous motor, and a frequency conversion unit is installed at the tail end of the permanent magnet synchronous motor and controls the rotating speed and torque of the permanent magnet synchronous motor through a frequency conversion side through-wall terminal; the belt conveyor is compact in structure, high in efficiency, accurate in control and capable of adapting to different running conditions of belt conveying.

Description

[Technical field]

[0001] The utility model relates to the technical field of mining tensioning devices, in particular to a permanent magnet frequency conversion integrated tensioning device. [Background Technology]

[0002] In belt conveyor systems, a tensioning device is usually required to ensure the tension and position control of the conveyor belt. Traditional tensioning devices mostly use a separate asynchronous motor, reducer and hydraulic brake combination. This design not only takes up a lot of space, but also is complicated to install and maintain, and is inefficient.

[0003] Therefore, there is an urgent need for a new type of compact, efficient and easy-to-control tensioning device to meet the needs of modern industry. [Contents of the utility model]

[0004] The purpose of the utility model is to solve the above-mentioned shortcomings and provide a permanent magnet frequency conversion integrated tensioning device, which replaces the open layout of traditional motors, inverters, and reducers, can achieve compact structure, high efficiency and precise control, and can adapt to different operating conditions of belt transportation.

[0005] In order to achieve the above-mentioned purpose, a permanent magnet frequency conversion integrated tensioning device is designed, including a tensioning winch 1 and a permanent magnet frequency conversion integrated machine 2, the tensioning winch 1 includes a winch base bracket 3, a drum support shaft 4, a wire rope drum 5 and a wheel-side reducer 6, the permanent magnet frequency conversion integrated machine 2 includes a permanent magnet synchronous motor 7, a motor side through-wall terminal 8, an electromagnetic brake device 9, a frequency conversion side through-wall terminal 10 and a frequency conversion unit 11, the wire rope drum 5 is installed on the winch base bracket 3 through the drum support shaft 4, and the wire rope drum 5 is wound on the winch base bracket 3. There is a steel wire rope, and a wheel-side reducer 6 is installed inside the steel wire rope drum 5. The wheel-side reducer 6 is connected to the main shaft of the permanent magnet synchronous motor 7. An electromagnetic brake device 9 is installed at the shaft extension at the rear end of the permanent magnet synchronous motor 7. A motor-side through-wall terminal 8 is led out at the rear end cover of the permanent magnet synchronous motor 7. The motor-side through-wall terminal 8 is used to connect the power cable. A frequency conversion unit 11 is installed at the rear end of the permanent magnet synchronous motor 7. The frequency conversion unit 11 controls the speed and torque of the permanent magnet synchronous motor 7 through the frequency conversion side through-wall terminal 10.

[0006] Furthermore, the steel wire rope wound on the tensioning winch 1 is connected to the tensioning trolley 19 through the pulley group 18, and the steel wire rope controls the forward and backward movement of the tensioning trolley 19 through the pulley group 18. A tension sensor 20 is installed at the pulley group 18, and the tension sensor 20 is connected to the frequency conversion unit 11 of the permanent magnet frequency conversion integrated machine 2 through a line.

[0007] Furthermore, the interior of the wire rope drum 5 is configured to be hollow, a reducer mounting frame is fixed inside the wire rope drum 5, the wheel-side reducer 6 is mounted on the reducer mounting frame, a flange is installed at the output end of the wheel-side reducer 6, and power is transmitted through the flange.

[0008] Furthermore, a power connector 12 and a control connector 13 are provided at the bottom of the frequency conversion unit 11. The power connector 12 is used to introduce a power cable, and the control connector 13 is used to introduce sensor signals and peripheral control signals.

[0009] Furthermore, a filter inductor 14 and an isolation transformer 15 are provided on the other side of the bottom of the frequency conversion unit 11, and a control unit 16 and a frequency conversion movement 17 are provided in the middle of the frequency conversion unit 11. The power cable is connected to the frequency conversion movement 17 through the filter inductor 14, and the control power supply is connected to the control unit 16 through the isolation transformer 15.

[0010] Furthermore, the permanent magnet synchronous motor 7 and the frequency conversion unit 11 of the permanent magnet frequency conversion integrated machine 2 are both installed on the winch base bracket 3, so that the support of the entire tensioning device is achieved through the winch base bracket 3.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] (1) The utility model uses a permanent magnet frequency conversion integrated machine with a drum built-in wheel reducer to replace the open layout of the traditional motor, frequency converter, and reducer, making the equipment structure compact and saving installation space;

[0013] (2) The permanent magnet motor of the utility model is directly connected to the wheel-side reducer, with a small reduction ratio and less energy loss;

[0014] (3) The four-quadrant inverter drive of the utility model can realize feedback braking and more accurately control the speed and torque of the motor to adapt to different operating conditions of belt transportation;

[0015] (4) The electromagnetic brake of the utility model has a small size, a simple structure and a fast response speed;

[0016] (5) The utility model has a built-in intelligent controller that directly collects tension data to control the real-time calibration of the winch, and can also upload various operating data to the host computer to realize intelligent control;

[0017] (6) The utility model can achieve compact structure, high efficiency and precise control, and is worthy of popularization and application. [Drawings]

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

[0019] Figure 2It is a cross-sectional structural schematic diagram of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the frequency conversion unit of the utility model;

[0021] In the figure: 1, tensioning winch 2, permanent magnet frequency conversion integrated machine 3, winch base bracket 4, drum support shaft 5, wire rope drum 6, wheel-side reducer 7, permanent magnet synchronous motor 8, motor side through-wall terminal 9, electromagnetic brake device 10, frequency conversion side through-wall terminal 11, frequency conversion unit 12, power connector 13, control connector 14, filter inductor 15, isolation transformer 16, control unit 17, frequency conversion movement 18, pulley block 19, tensioning trolley 20, tension sensor. [Specific implementation method]

[0022] As shown in the accompanying drawings, the utility model provides a permanent magnet frequency conversion integrated tensioning device, including a tensioning winch 1 and a permanent magnet frequency conversion integrated machine 2, the tensioning winch 1 includes a winch base bracket 3, a drum support shaft 4, a wire rope drum 5 and a wheel-side reducer 6, the permanent magnet frequency conversion integrated machine 2 includes a permanent magnet synchronous motor 7, a motor side through-wall terminal 8, an electromagnetic brake device 9, a frequency conversion side through-wall terminal 10 and a frequency conversion unit 11, the wire rope drum 5 is installed on the winch base bracket 3 through the drum support shaft 4, and the wire rope drum 5 is installed on the winch base bracket 3 through the drum support shaft 4. A steel wire rope is wound around the drum 5, and a wheel-side reducer 6 is installed inside the steel wire rope drum 5. The wheel-side reducer 6 is connected to the main shaft of the permanent magnet synchronous motor 7. An electromagnetic brake device 9 is installed at the shaft extension at the rear end of the permanent magnet synchronous motor 7. A motor-side through-wall terminal 8 is led out at the rear end cover of the permanent magnet synchronous motor 7. The motor-side through-wall terminal 8 is used to connect the power cable. A frequency conversion unit 11 is installed at the rear end of the permanent magnet synchronous motor 7. The frequency conversion unit 11 controls the speed and torque of the permanent magnet synchronous motor 7 through the frequency conversion side through-wall terminal 10.

[0023] Among them, the wire rope wound on the tensioning winch 1 is connected to the tensioning trolley 19 through the pulley group 18, and the wire rope controls the forward and backward movement of the tensioning trolley 19 through the pulley group 18. A tension sensor 20 is installed at the pulley group 18, and the tension sensor 20 is connected to the frequency conversion unit 11 of the permanent magnet frequency conversion integrated machine 2 through a line; the permanent magnet synchronous motor 7 and the frequency conversion unit 11 of the permanent magnet frequency conversion integrated machine 2 are both installed on the winch base bracket 3, so that the support of the entire tensioning device is realized through the winch base bracket 3.

[0024] The inside of the wire rope drum 5 is set to be hollow, and a reducer mounting frame is fixed inside the wire rope drum 5. The wheel-side reducer 6 is installed on the reducer mounting frame. The output end of the wheel-side reducer 6 is installed with a flange, and the power is transmitted through the flange. The bottom of the frequency conversion unit 11 is provided with a power connector 12 and a control connector 13. The power connector 12 is used to introduce the power cable, and the control connector 13 is used to introduce the sensor signal and the peripheral control signal; the other side of the bottom of the frequency conversion unit 11 is provided with a filter reactor 14 and an isolation transformer 15. The middle of the frequency conversion unit 11 is provided with a control unit 16 and a frequency conversion movement 17. The power cable is connected to the frequency conversion movement 17 through the filter reactor 14, and the control power is connected to the control unit 16 through the isolation transformer 15.

[0025] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments:

[0026] The utility model relates to the field of permanent magnet frequency conversion integrated machine and belt conveyor tensioning device for mining, specifically a permanent magnet frequency conversion integrated tensioning device, which is applied to the tensioning part of the belt conveyor system. The permanent magnet frequency conversion integrated tensioning device pulls the wire rope through the pulley block to control the forward and backward movement of the tensioning trolley. The intelligent controller receives the signal from the tension sensor and adjusts the inverter output to the torque according to the preset parameters, so as to realize the precise control of the conveyor belt tension and speed. When the system needs to stop urgently, the built-in electromagnetic brake can respond to the command quickly to realize safe braking.

[0027] As attached Figure 1 As shown, the permanent magnet frequency conversion integrated tensioning device described in the utility model includes two parts: a tensioning winch 1 and a permanent magnet frequency conversion integrated machine 2. The wire rope is wound around the wire rope drum 5 of the tensioning winch 1, and the tension sensor signal is connected to the frequency conversion unit 11 of the permanent magnet frequency conversion integrated machine 2. The tensioning winch 1 and the permanent magnet frequency conversion integrated machine 2 are formed into a whole through the wheel-side reducer 6.

[0028] As attached Figure 2 As shown, the tensioning winch 1 includes a winch base bracket 3, a drum support shaft 4, a wire rope drum 5 and a wheel-side reducer 6; the permanent magnet frequency conversion integrated machine 2 includes a permanent magnet synchronous motor 7, a motor side through-wall terminal 8, an electromagnetic brake device 9, a frequency conversion side through-wall terminal 10 and a frequency conversion unit 11; the winch base bracket 3 is used to support the entire tensioning winch 1, and the wire rope drum 5 is connected to the winch base bracket 3 through the drum support shaft 4; the wire rope drum 5 is hollow inside, and the wheel-side reducer 6 is installed inside, and power is transmitted through a flange connection; the main shaft of the permanent magnet synchronous motor 7 is connected to the wheel-side reducer 6, and an electromagnetic brake device 9 is installed at the shaft extension at the rear end of the motor, and the motor side through-wall terminal 8 is led out at the rear end cover for connecting the power cable; the frequency conversion unit 11 is installed at the rear end of the permanent magnet synchronous motor 7, and the speed and torque of the permanent magnet motor 10 are controlled through the frequency conversion side through-wall terminal.

[0029] As attached Figure 3 As shown, the power cable is introduced through the power connector 12, and the sensor signal and the peripheral control signal are introduced through the control connector 13; further, the power cable is connected to the frequency converter 17 through the filter reactor 14 to reduce the electromagnetic interference of the main circuit; the control power supply is connected to the control unit 16 through the isolation transformer 15 to reduce the electromagnetic interference to the control circuit.

[0030] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. The standard parts used can be purchased from the market, and special-shaped parts can be customized according to the records in the specification and drawings. The specific connection methods of each part adopt mature conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0031] The present invention is not limited to the above-mentioned implementation modes, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be considered as equivalent replacement modes and shall be included in the protection scope of the present invention.

Claims

1. A permanent magnet variable frequency integrated tensioning device, characterized in that: The invention comprises a tensioning winch (1) and a permanent magnet frequency conversion integrated machine (2), wherein the tensioning winch (1) comprises a winch base support (3), a drum support shaft (4), a wire rope drum (5) and a wheel-side reducer (6), and the permanent magnet frequency conversion integrated machine (2) comprises a permanent magnet synchronous motor (7), a motor-side through-wall terminal (8), an electromagnetic brake device (9), a frequency conversion side through-wall terminal (10) and a frequency conversion unit (11), and the wire rope drum (5) is installed on the winch base support (3) through the drum support shaft (4), and a wire rope is wound on the wire rope drum (5). A wheel-side reducer (6) is installed inside the rope drum (5), and the wheel-side reducer (6) is connected to the main shaft of the permanent magnet synchronous motor (7). An electromagnetic brake device (9) is installed at the shaft extension at the rear end of the permanent magnet synchronous motor (7). A motor-side through-wall terminal (8) is led out from the rear end cover of the permanent magnet synchronous motor (7), and the motor-side through-wall terminal (8) is used to connect a power cable. A frequency conversion unit (11) is installed at the rear end of the permanent magnet synchronous motor (7), and the frequency conversion unit (11) controls the speed and torque of the permanent magnet synchronous motor (7) through the frequency conversion side through-wall terminal (10).

2. The permanent magnet variable frequency integrated tensioning device according to claim 1, characterized in that: The steel wire rope wound on the tensioning winch (1) is connected to the tensioning trolley (19) via a pulley block (18); the steel wire rope controls the forward and backward movement of the tensioning trolley (19) via the pulley block (18); a tension sensor (20) is installed at the pulley block (18); and the tension sensor (20) is connected to the frequency conversion unit (11) of the permanent magnet frequency conversion integrated machine (2) via a line.

3. The permanent magnet variable frequency integrated tensioning device according to claim 1 or 2, characterized in that: The interior of the wire rope drum (5) is arranged to be hollow, a reducer mounting frame is fixed inside the wire rope drum (5), the wheel-side reducer (6) is mounted on the reducer mounting frame, a flange is installed at the output end of the wheel-side reducer (6), and power is transmitted through the flange.

4. The permanent magnet variable frequency integrated tensioning device according to claim 1, characterized in that: The frequency conversion unit (11) is provided with a power connector (12) and a control connector (13) at the bottom, wherein the power connector (12) is used for introducing a power cable, and the control connector (13) is used for introducing sensor signals and peripheral control signals.

5. The permanent magnet variable frequency integrated tensioning device according to claim 4, characterized in that: A filter reactor (14) and an isolation transformer (15) are arranged on the other side of the bottom of the frequency conversion unit (11); a control unit (16) and a frequency conversion core (17) are arranged in the middle of the frequency conversion unit (11); a power cable is connected to the frequency conversion core (17) through the filter reactor (14); and a control power supply is connected to the control unit (16) through the isolation transformer (15).

6. The permanent magnet variable frequency integrated tensioning device according to claim 1, characterized in that: The permanent magnet synchronous motor (7) and the frequency conversion unit (11) of the permanent magnet frequency conversion integrated machine (2) are both installed on the winch base bracket (3).

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