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Variable-frequency-to-power-frequency control system and method for bridge maintenance vehicle

A bridge maintenance vehicle and control system technology, applied to control systems, bridges, bridge parts, etc., can solve the problems of maintenance personnel being trapped, failures, and long intervals of use, and achieve the effect of avoiding personnel retention and providing diversity

Active Publication Date: 2019-09-24
重庆红岩建设机械制造有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the overhaul vehicle works outdoors and the interval between use is long, the frequency converter is easily affected by outdoor dust, humidity and long-term non-use, resulting in failure
Since the maintenance vehicle is a manned operation equipment, it is easy to cause the maintenance personnel to be trapped when a failure occurs

Method used

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  • Variable-frequency-to-power-frequency control system and method for bridge maintenance vehicle
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  • Variable-frequency-to-power-frequency control system and method for bridge maintenance vehicle

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Embodiment Construction

[0034] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

[0035] Wherein, the accompanying drawings are for illustrative purposes only, and represent only schematic diagrams, rather than physical drawings, and should...

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Abstract

The invention relates to a variable-frequency-to-power-frequency control system and method for a bridge maintenance vehicle, and belongs to the field of bridge safety detection. The system comprises a variable frequency control system and a power frequency control system. The variable frequency control system comprises a power supply input, a deviation correction system, a frequency converter, a controller PLC, a contactor, a circuit breaker, a selection switch, an intermediate relay control button, a stroke switch and a sensor. The power frequency control system comprises a power supply input, a manual correction button, a selection switch, a contactor and a circuit breaker. The power supply input supplies power to a generator or a power battery. The deviation correction system comprises a controller PLC, an encoder, a frequency converter and a stroke switch. Free conversion of power / variable frequency is realized and diversity of control is provided. A new solution is provided for the movement of the maintenance vehicle in emergency, and the situation of personnel retention due to the frequency conversion failure of the maintenance vehicle can be avoided.

Description

technical field [0001] The invention belongs to the field of bridge safety detection, and relates to a frequency conversion-to-power frequency control system and method for a bridge maintenance vehicle. Background technique [0002] For the control system of the bridge maintenance vehicle, there are generally two control methods. 1. Power frequency control mode. The motor of the maintenance vehicle is mainly driven by power frequency. It is prone to unstable operation during the driving process, and the left and right drive motors of the truss are not synchronized. There is an error in the running of the maintenance vehicle. This control method is often used in a system with a short truss length and does not require automatic deviation correction; 2. In the variable frequency drive mode, the motor of the maintenance vehicle is controlled by a frequency converter, which can realize stepless speed regulation of the maintenance vehicle. The maintenance vehicle runs smoothly, an...

Claims

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Application Information

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IPC IPC(8): H02P27/00H02P27/04H02P5/50E01D19/10
CPCE01D19/106H02P5/50H02P27/00H02P27/04
Inventor 袁肆淩胥俊陈川
Owner 重庆红岩建设机械制造有限责任公司
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