CN212452863U

CN212452863U - Excavator starting protection system and excavator

Info

Publication number: CN212452863U
Application number: CN202020794872.0U
Authority: CN
Inventors: 苏杭; 王宾; 王德永; 邹梓玲; 刘虹
Original assignee: LOVOL Engineering Machinery Group Co Ltd
Current assignee: Lovol Heavy Industry Group Co ltd
Priority date: 2020-05-13
Filing date: 2020-05-13
Publication date: 2021-02-02
Anticipated expiration: 2030-05-13

Abstract

The disclosure relates to the field of engineering machinery, in particular to an excavator starting protection system and an excavator. The utility model discloses an excavator starts protection system and excavator, including the starter, the starter links to each other with the starting relay, and the starting relay links to each other with the battery, and the battery links to each other with the input of power management module, and ignition key switch, guide's handle safety switch link to each other with the input of power management module respectively; the output end of the power supply management module is connected with the starting relay; the power management module is connected with the display through a CAN bus. Need not to adopt multiple relay, realize that the degree of integrating is high, the wiring is simple.

Description

Excavator starting protection system and excavator

Technical Field

The disclosure relates to the field of engineering machinery, in particular to an excavator starting protection system and an excavator.

Background

At present, when an excavator is started, a starter can be operated only by controlling a plurality of relays such as a starting relay, a pilot safety relay and a time relay. When the key switch generates a starting signal 'start' and turns to 'start', the pilot switch is in a safe state, the ECU controller sends a low level signal to the starting control relay, then the contact of the control relay is started to act, the starter can be powered to operate, and at the moment, the time relay controls the running time of the starter at the same time. Therefore, the existing starting system has low integration degree, complex wiring, single starting time setting, insufficient intellectualization and incapability of accurately controlling the starting time.

Disclosure of Invention

The utility model aims at providing a excavator is protected and is started protection system and excavator, improves the relay wiring complicacy, and the not high and control start time of integrated degree is accurate problem inadequately.

In order to achieve the above object, one or more embodiments of the present invention provide the following technical solutions:

the utility model discloses an excavator starting protection system, which comprises a starter, wherein the starter is connected with a starting relay, the starting relay is connected with a storage battery, the storage battery is connected with the input end of a power management module, and an ignition key switch and a pilot handle safety switch are respectively connected with the input end of the power management module; the output end of the power supply management module is connected with the starting relay; the power management module is connected with the display through a CAN bus;

further, the power management module configures an IO port;

furthermore, the power management module is internally provided with a logic circuit;

further, the display is connected with a water temperature sensor;

further, the display is connected with a rotating speed sensor;

further, the water temperature sensor transmits the received temperature data of the engine to a display;

further, the rotating speed sensor transmits the received rotating speed data of the generator to a display;

further, the display longitudinally transmits the acquired rotating speed data and temperature data to the power management module through the CAN;

further, the setting condition of the starting relay is that the engine is in a non-running state and an ignition key is started from 'start' to 'start';

further, the reset condition of the starting relay comprises that an ignition key switch is started from 'start' to 'start';

furthermore, the reset condition of the starting relay also comprises that the power supply management module receives a rotation signal of an ignition key switch, and the rotation time of the ignition key switch is greater than the time threshold of a starter;

further, the time threshold corresponds to different values at different temperatures;

furthermore, the reset condition of the starting relay also comprises that the rotating speed of the engine is greater than or equal to the rotating speed threshold of the starter;

further, the rotating speed threshold corresponds to different values at different temperatures;

the utility model also provides an excavator adopts an excavator in this application to start protection system.

The beneficial effects of one or more technical schemes are as follows:

1. the utility model designs the power management module which can reduce the using amount of the relays, and the service life of the input/output port of the power management module is longer than that of the traditional relay;

2. the utility model discloses a link to each other with guide's handle safety switch through design power management module, realize the operation protection to the excavator starter, can effectively avoid causing because the mistake starts to start and start the safety problem.

The utility model discloses a traditional mode that needs to use multiple relay is improved in the realization, need not to adopt multiple relay, realizes integrating the degree height, and the wiring is simple, and the effect that start-up time can effective control.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a system configuration diagram.

In the figure, 1, a starter, 2, a starting relay, 3, a storage battery, 4, a power management module, 4-1, an input end of the power management module, 4-2, an output end of the power management module, 5, a display, 6, an ignition key switch, 7, a pilot handle safety switch, 8, a water temperature sensor, 9, a rotating speed sensor, 10 and a CAN bus.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the utility model discloses an excavator starts protection system, including starter 1, starter 1 links to each other with starting relay 2, and starting relay 2 links to each other with battery 3, and battery 3 links to each other with power management module's input 4-1, and ignition key switch 6, guide's handle safety switch 7 link to each other with power management module's input 4-1 respectively; the output end 4-2 of the power management module is connected with a starting relay 5; the power management module 4 is connected with the display 5 through a CAN bus 10;

the power management module 4 configures an IO port; the power management module 4 is internally provided with a logic circuit; compared with the traditional relay, the relay has the characteristics of high integration level, simple wiring and the like.

The display 5 is connected with the water temperature sensor 8; the display 5 is connected with a rotating speed sensor 9; the water temperature sensor 9 transmits the received temperature data of the engine to the display 6; the rotating speed sensor 9 transmits the received rotating speed data of the generator to the display 5; the display 5 sends the acquired rotating speed data and temperature data to the power management module 4 through the CAN bus 10; the power management module 4 can determine the rotating speed threshold of the engine and the time threshold of the key switch according to different temperature and rotating speed data;

the set condition of the starting relay 2 is that the engine is in a non-running state and the ignition key is started from 'start' to 'start'; when the power management module 4 receives a starting signal of the ignition key switch 6 and the pilot handle safety switch 7 is in a safe state, the power management module 4 sends a high level signal to control the contact action of the starting relay 2, and the starter runs by being electrified.

The reset condition of the starter relay 2 includes: (1) the ignition key switch 6 is started from "on" to "on"; (2) the power management module 4 receives a rotation signal of the ignition key switch 6, and the rotation time of the ignition key switch 6 is greater than the time threshold of the starter 1 set by the power management module 4; the time threshold corresponds to different values at different temperatures; (3) the rotating speed of the engine is more than or equal to the rotating speed threshold of the starter 1; the rotation speed threshold corresponds to different values at different temperatures.

When the power management module 4 receives the rotation signal of the ignition key switch 6 and the rotation time is greater than the time threshold, the starter 1 is required to be powered off immediately, so that the starter is prevented from running for a long time; the rotating speed of the engine is greater than or equal to the rotating speed threshold, so that the starter 1 is prevented from being driven by the engine to run, and the starter 1 is immediately powered off; when the starter operates 1, after any one of the three reset conditions is achieved, the power management module 4 immediately stops sending high level signals to the starting relay 2, and the starter 1 is protected for time. The protection of the starter 1 can be realized by intelligently controlling the time threshold and the rotating speed threshold.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A starting protection system of an excavator comprises a starter, and is characterized in that the starter is connected with a starting relay, the starting relay is connected with a storage battery, the storage battery is connected with the input end of a power management module, and an ignition key switch and a pilot handle safety switch are respectively connected with the input end of the power management module; the output end of the power supply management module is connected with the starting relay; the power management module is connected with the display through a CAN bus.

2. The excavator start protection system of claim 1 wherein the display is connected to a water temperature sensor.

3. The excavator start protection system of claim 1 wherein the display is connected to a speed sensor.

4. The excavator start protection system of claim 2 wherein the water temperature sensor transmits received engine temperature data to the display.

5. The excavator start protection system of claim 3 wherein the speed sensor transmits received generator speed data to the display.

6. The excavator start protection system of claim 1 wherein the display transmits the collected speed data and temperature data longitudinally to the power management module via the CAN.

7. The excavator start protection system of claim 1 wherein the set condition of the start relay is that the engine is not running and the ignition key is turned from "start" to "start".

8. The excavator start protection system of claim 1 wherein the reset condition of the start relay comprises ignition key switch from "start" to "start".

9. The excavator start protection system of claim 1 wherein the reset condition of the starting relay further comprises the engine speed being greater than or equal to a starter speed threshold.

10. An excavator, characterized in that an excavator start protection system as claimed in any one of claims 1 to 9 is used.