Energy recovery pure electric tension machine and control method thereof

Abstract

The present invention provides an energy recovery pure electric tension machine and a control method thereof, belonging to the technical field of tension machines. The present invention comprises: a tension wheel; a first motor is connected to the tension wheel via a first magnetic powder brake, a first reducer and a first torque sensor in sequence; a second motor is connected to the tension wheel via a second magnetic powder brake, a second reducer and a second torque sensor in sequence; the speed and rotation direction of the first motor and the second motor are controlled by a control panel according to the values displayed on the first torque sensor and the second torque sensor; the control panel adjusts the tension of the tension machine by controlling the first magnetic powder brake and the second magnetic powder brake respectively. The present invention adopts an integrated charging and discharging motor to directly drive the reducer to drive the tension wheel to work, and adopts a magnetic powder brake to provide tension for the tension wheel, achieving the same effect as a traditional hydraulic tension machine, realizing zero fuel and zero emissions, effectively reducing energy consumption, and reducing construction costs.

Description

Technical Field

[0001] The present invention relates to the technical field of tension machines, and in particular to an energy recovery pure electric tension machine and a control method for active and passive working conditions thereof. Background Art

[0002] A hydraulic tensioner is used for ground wire installation in power transmission line projects. Depending on the diameter of the conductor, ground wire, or traction rope (hereinafter referred to as the ground wire), different sheave bottom diameters can be selected. The ground wire is wound around the tensioner sheave, and the tail car provides sufficient friction between the tensioner sheave and the ground wire. The tail car axle frame carries the ground wire reel, and the tail car power head provides power to the reel. The tensioner sheave and tail car rotate when pulled by an external force such as a traction machine.

[0003] Existing hydraulic tensioners typically use a traditional diesel engine as power, which is transmitted through a hydraulic and mechanical system to the tension pulley. This overflow in the hydraulic system causes the hydraulic oil to heat up, wastes energy, and has major drawbacks such as noise pollution, high fuel consumption, exhaust emissions, and high maintenance costs. Summary of the Invention

[0004] In view of this, in order to solve the shortcomings of the hydraulic tensioner powered by the traditional diesel engine, on the one hand, the present invention provides an energy recovery pure electric tensioner, which removes the diesel engine system and hydraulic system in the traditional hydraulic tensioner, uses an integrated charging and generating electric motor to directly drive the reducer to drive the tension wheel, and uses a magnetic powder brake to provide tension for the tension wheel, achieving the same effect as the traditional hydraulic tensioner, realizing zero fuel and zero emissions, effectively reducing energy consumption and reducing construction costs.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An energy recovery pure electric tension machine, comprising:

[0007] Tension wheel;

[0008] a first motor connected to the tension wheel via a first magnetic powder brake, a first speed reducer and a first torque sensor in sequence;

[0009] a second motor connected to the tension wheel via a second magnetic powder brake, a second speed reducer, and a second torque sensor in sequence;

[0010] an energy storage battery, configured to supply power to the first motor and the second motor;

[0011] a control panel connected to the first torque sensor, the first magnetic powder brake, the second torque sensor, and the second magnetic powder brake, respectively;

[0012] controlling the speed and rotation direction of the first motor and the second motor through the control panel according to the values displayed on the first torque sensor and the second torque sensor;

[0013] The control panel adjusts the tension of the tension machine by controlling the first magnetic powder brake and the second magnetic powder brake respectively.

[0014] Preferably, the first reducer and the tension wheel are connected via a first connecting flange.

[0015] Preferably, the second reducer and the tension wheel are connected via a second connecting flange.

[0016] Preferably, the energy storage battery is also used to supply power to the control panel, the first torque sensor, the first magnetic powder brake, the second torque sensor and the second magnetic powder brake.

[0017] On the other hand, the present invention also provides a control method for the above-mentioned energy recovery pure electric tension machine, including active working conditions and passive working conditions. The active working condition includes rewinding and wire feeding. The rewinding control method includes the following steps:

[0018] During rewinding, the control panel controls the first motor to rotate forward to drive the tension wheel, and adjusts the speed of the first motor to achieve a reasonable output power;

[0019] The control panel controls the first magnetic powder brake and the second magnetic powder brake to be inactive, and controls the second motor to rotate forward, driving the ground wire reel to rewind, thereby providing reliable friction between the ground wire and the tension wheel;

[0020] The wire feeding control method comprises the following steps:

[0021] When feeding the wire, the control panel controls the first motor to reverse and drive the tension wheel to move, and adjusts the speed of the first motor to achieve a reasonable output power;

[0022] The control panel controls the first magnetic powder brake to be inactive, controls the second magnetic powder brake to be active, controls the second motor to be inactive, and maintains a certain tension to provide reliable friction force for the tension wheel;

[0023] The control method for the passive working condition comprises the following steps:

[0024] In the passive working condition, the control panel controls the action of the first magnetic powder brake to provide reliable tension for the tension wheel, and controls the action of the second magnetic powder brake to provide reliable friction for the ground wire and the tension wheel, completing the tension pay-off working condition. At the same time, the first motor and the second motor act as generators, transmitting the generated electrical energy to the energy storage battery for storage.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The energy recovery pure electric tension machine provided by the present invention eliminates the diesel engine system and hydraulic system in the traditional hydraulic tension machine, adopts an integrated charging and generating electric motor to directly drive the reducer to drive the tension wheel, and adopts a magnetic powder brake to provide tension for the tension wheel, thereby achieving the same effect as the traditional hydraulic tension machine, realizing zero fuel and zero emissions, effectively reducing energy consumption and lowering construction costs.

[0027] By using the energy recovery pure electric tension machine and its control method provided by the present invention, the heat wasted in the passive working state of the traditional tension machine is recovered, the noise pollution during the operation of the tension machine is reduced, the problems of fuel consumption and exhaust emissions are eliminated, the maintenance costs caused by hydraulic system failures and engine system failures of traditional hydraulic tension machines are eliminated, and the environmental pollution problems caused by oil leakage failures are also eliminated. The working environment of the operators is improved, noise pollution is reduced, the maintenance cycle is shortened, and the maintenance costs are reduced. For harsh conditions such as high cold and high altitude, the power system and energy recovery system of the hydraulic energy recovery pure electric tension machine are less affected by the ambient temperature and altitude, have wider adaptability, and work more reliably. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the tail car power head in the present invention;

[0030] In the figure, 1. energy storage battery; 2. first motor; 3. first connecting flange; 4. first reducer; 5. first torque sensor; 6. first magnetic powder brake; 7. control panel; 8. tension wheel; 9. second magnetic powder brake; 10. second torque sensor; 11. second reducer; 12. second connecting flange; 13. second motor. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention in specific circumstances.

[0034] The hydraulic tension machine is divided into active working conditions and passive working conditions. Through the analysis of the operating conditions of the hydraulic tension machine, the active working time of the tension machine is about 12% of the passive working time. The passive working condition is towed by the traction machine. The tension machine relies on the overflow of the hydraulic system overflow valve to provide tension and convert mechanical energy into heat energy for release.

[0035] The present invention is different from a transmission hydraulic tension machine in that it eliminates the diesel engine system and the hydraulic system. The present invention uses an integrated charging and generating electric motor to directly drive the reducer to drive the tension wheel, and uses a magnetic powder brake to provide tension for the tension wheel. When operating in active mode, the electric motor directly drives the tension wheel to move; when operating in passive mode, a magnetic powder brake is used to provide tension for the tension wheel, and the tension wheel drives the electric motor to realize the generator mode, which is used to recover the energy generated by the tension machine in the passive mode and store the electrical energy in the energy storage battery as the energy source when the tension machine is in the active mode. The tail car part of the tension machine also uses a combination of a motor and a magnetic powder brake to achieve the same effect as the traditional hydraulic tension machine.

[0036] Specifically:

[0037] An energy recovery pure electric tension machine, comprising:

[0038] Tension wheel 8;

[0039] a first motor 2, which is connected to the tension wheel 8 via a first magnetic powder brake 6, a first reducer 4 and a first torque sensor 5 in sequence, and is used to drive the tension wheel 8 to rotate;

[0040] a second motor 13, which is connected to the tension wheel 8 via the second magnetic powder brake 10, the second reducer 11 and the second torque sensor 9 in sequence, and is used to drive the tension wheel 8 to rotate;

[0041] an energy storage battery 1 for supplying power to the first motor 2 and the second motor 13;

[0042] a control panel 7, which is respectively connected to the first torque sensor 5, the first magnetic powder brake 6, the second torque sensor 9 and the second magnetic powder brake 10;

[0043] According to the values displayed on the first torque sensor 5 and the second torque sensor 9 (the tension in the passive working condition), the speed and rotation direction of the first motor 2 and the second motor 13 are controlled through the control panel 7;

[0044] According to the values displayed on the first torque sensor 5 and the second torque sensor 9 (the tension in the passive working condition), the first magnetic powder brake 6, the second magnetic powder brake 10, the first motor 2 and the second motor 13 are controlled respectively through the control panel 7;

[0045] According to the values displayed on the first torque sensor 5 and the second torque sensor 9, the control panel 7 adjusts the tension of the tension machine by controlling the first magnetic powder brake 6 and the second magnetic powder brake 10 respectively.

[0046] The present invention is an improvement on the traditional hydraulic tension machine. It removes the diesel engine system and hydraulic system, adopts an integrated charging and discharging electric motor to directly drive the reducer to drive the tension wheel, and adopts a magnetic powder brake to provide tension for the tension wheel. Among them, the tension wheel 8, the first motor 2 and the second motor 13 are arranged in the same way as in the traditional hydraulic tension machine and are all arranged on the frame. This will not be repeated here. Among them, the second motor 13, the second magnetic powder brake 9, the second torque sensor 10, the second reducer 11, and the second connecting flange 12 together constitute the tail car power head.

[0047] The energy storage battery 1 and the control panel 7 can be set up according to actual needs, and are preferably set on the rack.

[0048] The first motor 2, second motor 13, first torque sensor 5, first magnetic powder brake 6, second torque sensor 9, and second magnetic powder brake 10 act together on the tension pulley 8. Their connection can be adjusted to parallel or series depending on the installation location. Series and parallel here refer to the connection between the motors (the first and second motors), the magnetic powder brakes (the first and second magnetic powder brakes), the reducers (the first and second reducers), the torque sensors (the first and second torque sensors), and the connecting flanges (the first and second connecting flanges). The magnetic powder brakes, reducers, torque sensors, and connecting flanges must be connected in series. If the overall length of the series connection is too long, the motors should be connected in parallel to reduce the overall length.

[0049] In the present invention, the connection mode between the motor and the tension wheel can be:

[0050] The first motor, the first magnetic powder brake, the first speed reducer, the first torque sensor, the first connecting flange and the tension wheel are connected in series in sequence.

[0051] The second motor, the second magnetic powder brake, the second speed reducer, the second torque sensor, the second connecting flange and the tension wheel are connected in series in sequence.

[0052] In the present invention, the control panel 7 is equipped with a tension controller (for controlling the tension generated by the first magnetic powder brake 6), a tension display instrument (for displaying the tension displayed by the first torque sensor 5), a tail car tension controller (for controlling the tension generated by the second magnetic powder brake 10), a tail car tension machine display (for displaying the tail car tension displayed by the second torque sensor 9), a motor controller (for controlling the forward and reverse rotation of the first motor and the second motor and the motor speed), and a battery detector (for detecting the voltage, power and other information of the energy storage battery 1).

[0053] In the present invention, the first reducer 4 and the tension pulley 8 are connected via a first connecting flange 3 .

[0054] In the present invention, the second reducer 11 and the tension pulley 8 are connected via a second connecting flange 12 .

[0055] In the present invention, the energy storage battery 1 is also used to power the control panel 7, the first torque sensor 5, the first magnetic powder brake 6, the second torque sensor 9 and the second magnetic powder brake 10, so that the energy storage battery 1 can power the electricity storage equipment in the tension machine without the need for an external power supply, thereby effectively reducing energy consumption.

[0056] On the other hand, the present invention also provides a control method for the above-mentioned energy recovery pure electric tension machine, including active working conditions and passive working conditions. The active working condition includes rewinding and feeding. The rewinding control method specifically includes the following steps:

[0057] During rewinding, the motor controller on the control panel 7 controls the first motor 2 to rotate forward, driving the tension wheel 8 to actively rotate through the first reducer 4, the first connecting flange 3 and other components, and adjusting the speed of the first motor 2 through the motor controller to achieve a reasonable output power;

[0058] The tension controller on the control panel 7 and the tail car tension controller respectively control the first magnetic powder brake 6 and the second magnetic powder brake 10 to be inactive, and the motor controller controls the second motor 13 to rotate forward, driving the ground wire reel to rewind, providing reliable friction between the ground wire and the tension wheel 8;

[0059] The wire feeding control method comprises the following steps:

[0060] When feeding the wire, the motor controller on the control panel 7 controls the first motor 2 to reverse and drive the tension wheel 8 to move. According to the value displayed on the first torque sensor 5, the motor controller on the control panel 7 adjusts the speed of the first motor 2 to achieve a reasonable output power.

[0061] The tension controller on the control panel 7 controls the first magnetic powder brake 6 to be inactive, and controls the second magnetic powder brake 10 to be active through the tail car tension controller on the control panel 7 according to the value displayed on the second torque sensor 10. The motor controller on the control panel 7 controls the second motor 13 to be inactive, maintaining a certain tension to provide reliable friction for the tension wheel 8;

[0062] The control method for the passive working condition comprises the following steps:

[0063] In the passive working condition, the tension controller on the control panel 7 controls the action of the first magnetic powder brake 6 to provide reliable tension for the tension wheel 8, and the tail car tension controller controls the action of the second magnetic powder brake 9 to provide reliable friction for the ground wire and the tension wheel 8, completing the tension pay-off working condition. At the same time, the first motor 2 and the second motor 13 act as generators, and transmit the generated electrical energy to the energy storage battery 1 for storage.

[0064] In the present invention, the torque sensor plays a feedback role, and the operator adjusts the tension through the control panel 7 according to the tension displayed on the torque sensor.

[0065] The control panel 7 controls the resistance generated by the magnetic powder brake (the first magnetic powder brake 6 and the second magnetic powder brake 10) by adjusting the braking current, and transmits the resistance to the tension wheel through the reducer to control the tension of the tension wheel.

[0066] In the present invention, related components of different models and specifications are selected according to the diameter and weight of the ground wire applicable to the tension machine.

[0067] In addition, it should be noted that the drawings provided in the specification of the present invention only show the deployment of one ground wire at a time. Those skilled in the art can make it into a two-wheel tensioner or a four-wheel tensioner, etc. based on the concept of the present invention. The above are only preferred specific embodiments of the present invention; however, the scope of protection of the present invention is not limited to them. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent replacements or changes based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A control method for an energy recovery pure electric tension machine, characterized in that: The energy recovery pure electric tension machine includes: Tension wheel; a first motor connected to the tension wheel via a first magnetic powder brake, a first speed reducer and a first torque sensor in sequence; a second motor connected to the tension wheel via a second magnetic powder brake, a second speed reducer, and a second torque sensor in sequence; an energy storage battery, configured to supply power to the first motor and the second motor; a control panel connected to the first torque sensor, the first magnetic powder brake, the second torque sensor, and the second magnetic powder brake, respectively; controlling the speed and rotation direction of the first motor and the second motor through the control panel according to the values displayed on the first torque sensor and the second torque sensor; The control panel adjusts the tension of the tension machine by controlling the first magnetic powder brake and the second magnetic powder brake respectively; A control method for an energy recovery pure electric tension machine includes active and passive working conditions. The active working condition includes rewinding and wire feeding. The rewinding control method includes the following steps: During rewinding, the control panel controls the first motor to rotate forward to drive the tension wheel, and adjusts the speed of the first motor to achieve a reasonable output power; The control panel controls the first magnetic powder brake and the second magnetic powder brake to be inactive, and controls the second motor to rotate forward, driving the ground wire reel to rewind, thereby providing reliable friction between the ground wire and the tension wheel; The wire feeding control method comprises the following steps: When feeding the wire, the control panel controls the first motor to reverse and drive the tension wheel to move, and adjusts the speed of the first motor to achieve a reasonable output power; The control panel controls the first magnetic powder brake to be inactive, controls the second magnetic powder brake to be active, controls the second motor to be inactive, and maintains the tension to provide reliable friction force for the tension wheel; The control method for the passive working condition comprises the following steps: In the passive working condition, the control panel controls the action of the first magnetic powder brake to provide reliable tension for the tension wheel, and controls the action of the second magnetic powder brake to provide reliable friction for the ground wire and the tension wheel, completing the tension pay-off working condition. At the same time, the first motor and the second motor act as generators, transmitting the generated electrical energy to the energy storage battery for storage.

2. The control method of the energy recovery pure electric tension machine according to claim 1, characterized in that: The first reducer and the tension wheel are connected via a first connecting flange.

3. The control method of the energy recovery pure electric tension machine according to claim 1, characterized in that: The second reducer is connected to the tension wheel via a second connecting flange.

4. A control method for an energy recovery pure electric tension machine according to any one of claims 1 to 3, characterized in that: The energy storage battery is also used to supply power to the control panel, the first torque sensor, the first magnetic powder brake, the second torque sensor, and the second magnetic powder brake.

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