Engineering machinery safety control device, method and system and engineering machine
A technology for construction machinery and safety control, which is applied in mechanically driven excavators/dredgers, earthmovers/shovels, construction, etc. The effect of ensuring safety
Active Publication Date: 2022-01-04
中联重科土方机械有限公司
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Problems solved by technology
[0003] The purpose of the embodiment of the present invention is to provide a construction machinery safety control device, method, system and construction machinery to solve the problem of complex control and inconvenient maintenance in the prior art question
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[0036] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0037] In the first aspect of this embodiment, a construction machinery safety control device is provided, including a first switch, a controller, a second switch, a pilot solenoid valve and an electric control module, the first switch is connected to the controller, the controller, the electric The control module and the second switch are electrically connected in sequence, and the controller, the pilot solenoid valve and the second switch are electrically connected in sequence; the second switch is used to selectively control the grounding of the electronic control module or the pilot solenoid valve; the controller is used to receive the first When the first e...
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The embodiment of the invention provides an engineering machinery safety control device, method and system and an engineering machine, and relates to the technical field of engineering machinery. The device comprises a first switch, a controller, a second switch, a pilot electromagnetic valve and an electric control module, the first switch is connected with the controller, the controller, the electric control module and the second switch are electrically connected in sequence, and the controller, the pilot electromagnetic valve and the second switch are electrically connected in sequence; the second switch is used for controlling the electric control module or the pilot electromagnetic valve to be grounded; the controller is used for controlling the electric control module to be be powered on under the conditions that a first electric signal gated by the first switch is received, a second electric signal gated by the first switch is received and the electric control module is grounded; and the controller is further used for controlling the pilot electromagnetic valve to be powered on under the condition that the first electric signal gated by the first switch is received and the pilot electromagnetic valve is grounded. It can be effectively ensured that a hydraulic system can not work when an engine is started, and the engine cannot be secondarily started in any state.
Description
technical field [0001] The invention relates to the technical field of engineering machinery, in particular to an engineering machinery safety control device, an engineering machinery safety control method, an engineering machinery safety control system and an engineering machinery. Background technique [0002] In the actual construction process, construction machinery such as excavators often have the engine start operation, and there are also working conditions where the engine works and the hydraulic action stops. At present, the existing safety protection mostly uses a pilot safety handle to control the on-off of the hydraulic pilot solenoid valve to realize the function of allowing and prohibiting hydraulic action, but the existing technology fails to integrate the engine, the pilot valve and other hydraulic valves. For comprehensive control, on the other hand, more relay devices are often used, and the control circuit is complicated, which is not convenient for mainte...
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IPC IPC(8): E02F9/20E02F3/04E02F9/22E02F9/24
CPCE02F9/20E02F9/2025E02F9/2058E02F9/22E02F9/2246E02F9/2264E02F9/24
Inventor 张成兰袁野游仕平张磊
Owner 中联重科土方机械有限公司