CN203270659U

CN203270659U - Safe starting control system of excavator

Info

Publication number: CN203270659U
Application number: CN 201320254436
Authority: CN
Inventors: 李书风; 孙艳宁; 储成高; 黄兴海; 宋云鹏; 刘强; 邓付军; 刘兆花
Original assignee: Foton Lovol International Heavy Industries Co Ltd
Current assignee: LOVOL Engineering Machinery Group Co Ltd
Priority date: 2013-05-13
Filing date: 2013-05-13
Publication date: 2013-11-06
Anticipated expiration: 2023-05-13

Abstract

The utility model relates to a safe starting control system of an excavator, and belongs to the technical field of excavator machinery. The safe starting control system of the excavator comprises a power module, a control module, an execution module and a displayer. The control module is composed of a vehicle control unit and an engine control unit. The execution module is composed of a starting switch, a safe solenoid valve, a safe operating rod switch, a safe operating rod control relay, a generator signal control relay, a starting relay and a starter. The vehicle control unit is electrically connected with the starting switch through an ACC power line. The starting switch, the safe operating rod control relay, the generator signal control relay, the starting relay and the starter are sequentially connected in series. A signal acquisition terminal of the vehicle control unit is electrically connected with the generator signal control relay. The safe operating rod switch is in series connection with the safe solenoid valve and then is connected with the safe operating rod control relay. Due to the fact that the displayer and the vehicle control unit are arranged, the safe starting control system of the excavator has the advantages of being good in safety performance and high in reliability.

Description

The safe starting control system of excavator

Technical field

The utility model belongs to the excavator field of mechanical technique, particularly relates to a kind of safe starting control system of excavator.

Background technology

at present, continuous progress along with the excavator technology, the electrical control system of excavator is constantly optimized, as everyone knows, the starting technique of excavator is a key technology in the excavator control technology always, the starting technique of tradition excavator is mainly with the chain realization of simple relay, find by long-term practice, mainly there is following defective in the starting technique of tradition excavator: one, because the electrical control system of traditional excavator does not have visual device, therefore when relay breaks down, operating personnel and attendant can't in time find fault, if fault is not in time processed, will cause generator, motor or battery are damaged.Two, the firing switch due to traditional excavator is mainly to be controlled by interlock relay, so the reliability ratio of control signal is lower.

Summary of the invention

The utility model provides a kind of safe starting control system with excavator of high reliability for solving the technical problem that exists in known technology.

The purpose of this utility model is to provide the safe starting control system of a kind of reliability and safe, reasonable in design, easy to operate, the excavator that has simultaneously visual function.

The technical scheme that the safe starting control system of the utility model excavator is taked is:

A kind of safe starting control system of excavator comprises: power module and the control module and the Executive Module that are electrically connected to described power module; Described control module is comprised of entire car controller and engine controller, connects by the CAN bus between described entire car controller and engine controller; Also comprise the display that is connected with described entire car controller; Described Executive Module is comprised of firing switch, security solenoid valve, safety operation lever switch, safety operation bar control relay, generator signal control relay, starter relay and starter; Described entire car controller is electrically connected to described firing switch by the ACC power line, described firing switch, safety operation bar control relay, generator signal control relay, starter relay, starter are connected successively, the signals collecting terminal of described entire car controller is electrically connected to described generator signal control relay, is electrically connected to safety operation bar control relay after described safety operation lever switch is connected with security solenoid valve.

The safe starting control system of the utility model excavator can also adopt following technical scheme:

Described power module is composed in parallel by generator and battery;

Connect by the CAN bus between described entire car controller and display.

Advantage and the good effect that the utlity model has are: due to the utility model by having used display, therefore the duty of control module and Executive Module can be shown in real time, so guaranteed that well operating personnel or staff grasp the duty between each electrical equipment of system timely, the normal operation of assurance system prevents trouble before it happens; Simultaneously, because the utility model has adopted independent entire car controller, Executive Module is controlled, therefore each electrical equipment of Executive Module had good protective effect, improved well the reliability of system.

Description of drawings

Fig. 1 is circuit diagram of the present utility model.

In figure, 1, firing switch; 2, safety operation lever switch; 3, safety operation bar control relay; 4, generator signal control relay; 5, battery; 6, starter relay; 7, security solenoid valve; 8, generator; 9, display; 10, entire car controller; 11, engine controller; 12, starter.

The specific embodiment

For further understanding utility model content of the present utility model, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:

Consult accompanying drawing 1, a kind of safe starting control system of excavator comprises: power module, the control module that is electrically connected to described power module and Executive Module and display 9; Above-mentioned power module is composed in parallel by generator 8 and battery 5; Above-mentioned control module is comprised of entire car controller 10 and engine controller 11, connects by the CAN bus between entire car controller 10 and engine controller 11; Connect by the CAN bus between entire car controller 10 and display 9, above-mentioned Executive Module is comprised of firing switch 1, security solenoid valve 7, safety operation lever switch 2, safety operation bar control relay 3, generator signal control relay 4, starter relay 6 and starter 12; Wherein: entire car controller 10 is electrically connected to firing switch 1 by the ACC power line, firing switch 1, safety operation bar control relay 3, generator signal control relay 4, starter relay 6, starter 12 are connected successively, the signals collecting terminal of entire car controller 10 is electrically connected to generator signal control relay 4, is electrically connected to safety operation bar control relay 3 after safety operation lever switch 2 is connected with security solenoid valve 7.

The concrete structure of the present embodiment and course of action, 1 details are as follows by reference to the accompanying drawings:

Step 1, when the starting excavator motor the time, the ACC signal of telecommunication that sends from firing switch 1 is input to entire car controller 10, entire car controller 10 carries out acquisition and processing to it;

Step 2, pin when the safety operation bar of excavator is in LOCK() during the position, cut off the control power supply of safety operation bar control relay 3, the 3 not adhesives of safety operation bar control relay, be connected to the signal source path of safety operation bar control relay 3 constant close contacts, control starter relay 6 adhesives this moment, and starter 12 can start;

Step 3, open when the safety operation bar of excavator is in ON() during the position, 3 adhesives of safety operation bar control relay are controlled in the control signal source of sending from firing switch 1, cut off the path of safety operation bar control relay 3 constant close contacts, open circuit in starter relay 6 control sources, forbid starting, this interlocking has been avoided because of the not danger starting when the LOCK position of the state of safety operation bar;

Step 4, when generator 8 fault-free, after in start-up course, generator 8 begins generating, connect the control power supply of generator

signal control relay

4,4 adhesives of generator signal control relay, cut off start loop, starter 12 shuts down, and completes the one push start process; Due in engine operation process, the generator signal end often has electricity, can prevent reignition; Simultaneously entire car controller 10 detects the ACC signal of telecommunication of firing switcies 1 and the generating signal of generator 8 carries out logical operation and processing, and sends on display 9 by the CAN bus, and the prompting starting process is completed and to start relevant device normal;

Step 5, when generator 8 breaks down, pilot engine, entire car controller 10 is communicated by letter with engine controller 11 by the CAN bus, entire car controller 10 detects motor and runs well, when entire car controller 10 does not receive the generating signal of generator 8, entire car controller 10 sends fault-signal and sends on display 9 by the CAN bus, prompting generator 8 operation irregularities, and engine running is ended in request; If this moment the motor continuous firing, due to the electric energy support that lacks generator 8, the power consumption of consumer will be all by battery 5 power supplies, very easily cause battery 5 power shortages this moment, and then produce a series of hidden dangers.So, the utility model utilizes entire car controller 10 that the fault of above-mentioned generator 8 is in time shown by display 9, and then in time remind the staff in time fault message to be carried out analyzing and processing, and can prevent trouble before it happens, improve reliability and the safety of system.

Above a kind of embodiment of the present utility model is had been described in detail, but described content is only preferred embodiment of the present invention, can not be considered to be used to limiting practical range of the present invention.All equalizations of doing according to the present patent application scope change and improve etc., within all should still belonging to patent covering scope of the present invention.

Claims

1. the safe starting control system of an excavator, comprising: power module and the control module and the Executive Module that are electrically connected to described power module; It is characterized in that: described control module is comprised of entire car controller and engine controller, connects by the CAN bus between described entire car controller and engine controller; Also comprise the display that is connected with described entire car controller; Described Executive Module is comprised of firing switch, security solenoid valve, safety operation lever switch, safety operation bar control relay, generator signal control relay, starter relay and starter; Described entire car controller is electrically connected to described firing switch by the ACC power line, described firing switch, safety operation bar control relay, generator signal control relay, starter relay, starter are connected successively, the signals collecting terminal of described entire car controller is electrically connected to described generator signal control relay, is electrically connected to safety operation bar control relay after described safety operation lever switch is connected with security solenoid valve.

2. the safe starting control system of excavator according to claim 1, it is characterized in that: described power module is composed in parallel by generator and battery.

3. the safe starting control system of excavator according to claim 1 and 2, is characterized in that: connect by the CAN bus between described entire car controller and display.