CN203270664U - Overheating protection device for heat removal system of excavating machine - Google Patents
Overheating protection device for heat removal system of excavating machine Download PDFInfo
- Publication number
- CN203270664U CN203270664U CN 201320249607 CN201320249607U CN203270664U CN 203270664 U CN203270664 U CN 203270664U CN 201320249607 CN201320249607 CN 201320249607 CN 201320249607 U CN201320249607 U CN 201320249607U CN 203270664 U CN203270664 U CN 203270664U
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- temperature sensor
- controller
- heat removal
- removal system
- overheating protection
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- Operation Control Of Excavators (AREA)
Abstract
The utility model discloses an overheating protection device for a heat removal system of an excavating machine, and belongs to the field of construction machinery. The overheating protection device for the heat removal system of the excavating machine is used for overheating protection to the heat removal system of the excavating machine, and mainly comprises a water temperature sensor mounted inside the cooling system of an engine, and an oil temperature sensor mounted inside the hydraulic system, wherein the water temperature sensor and the oil temperature sensor are both connected with a controller, and the controller is respectively connected with a display and a hydraulic pump proportion electromagnetic valve; communication connection between the controller and the water temperature sensor, the oil temperature sensor, the display and the hydraulic pump proportion electromagnetic valve is fulfilled through a CAN bus protocol. After the adoption of the technical scheme, the overheating protection device solves the problems of machine performance reduction and low work efficiency, caused by overheat of the heat removal system, under the premise of protecting the safety of machine components in high temperature environment.
Description
Technical field
The utility model belongs to engineering machinery field, specifically, relates in particular to a kind of excavator cooling system overtemperature protection system.
Background technology
at present, overtemperature protection system or system are used for Industry Control or electric power control field mostly, for engineering machinery field, especially the overtemperature protection under the excavator hot environment is in the starting stage, so prior art not can solve the problem of excavator overtemperature protection, when excavator is worked under hot environment in addition, heat radiation to digger engine system and hydraulic system requires high, if the cooling system of excavator is overheated, not only easily cause workpiece such as motor, the damage of hydraulic pump, and can report to the police frequently, cause operating personnel to have to stop the work of excavator.So not only cause the machine performance of excavator to descend, and cause the low of operating efficiency.
Summary of the invention
The utility model discloses a kind of excavator cooling system overtemperature protection system, when having solved hot environment, excavator is avoided the problem that the overheated machine performance that causes of cooling system descends, operating efficiency is low under the prerequisite of protection machine part safety.
The utility model is achieved through the following technical solutions:
The utility model comprises the cooling-water temperature sensor that is arranged in engine-cooling system, be arranged on the oil temperature sensor in hydraulic system, described cooling-water temperature sensor is connected by data line with oil temperature sensor and is connected with controller, and controller is connected with the hydraulic pump proportion magnetic valve with display by data line respectively.
The communication connection of described cooling-water temperature sensor, oil temperature sensor, display and hydraulic pump proportion magnetic valve and controller is all completed by the CAN bus protocol.
To have reliability high due to the CAN bus, and transfer rate is fast, is adapted at that environment temperature is abominable, electromagnetic radiation strong and vibrates in large environment, so in the utility model, preferred CAN bus realizes communication between each device.
Compared with prior art, the beneficial effects of the utility model are: when excavator is operated in lower time of environment of higher temperature, the utility model can be regulated the mode of operation of excavator automatically, the excavator parts damages of avoiding the excess Temperature of cooling system to cause, can be because of engine cooling system or the overheated and interruption of work of hydraulic work system in hot environment, improve the machine performance of excavator, bring into play to greatest extent machine efficiency, and then increase work efficiency.
Description of drawings
Fig. 1 is theory diagram of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further described explanation.
As shown in the figure, the utility model comprises the cooling-water temperature sensor that is arranged in engine-cooling system, be arranged on the oil temperature sensor in hydraulic system, described cooling-water temperature sensor is connected by data line with oil temperature sensor and is connected with controller, and controller is connected with the hydraulic pump proportion magnetic valve with display by data line respectively.
The communication connection of described cooling-water temperature sensor, oil temperature sensor, display and hydraulic pump proportion magnetic valve and controller is all completed by the CAN bus protocol.
Operating principle of the present utility model and process are as follows:
Excavator system in the utility model can be divided into three kinds of patterns, is respectively high load capacity, economic load, light load, is set with simultaneously digger engine forced idling pattern.Above-mentioned pattern is completed control by controller.
Under the situation of engine overheat, the temperature of the utility model during with engine operation is divided into safe temperature, critical-temperature and three kinds of states of alarm temperature, and the Temperature numerical of above-mentioned three kinds of states raises successively.Be arranged on temperature that the cooling-water temperature sensor in engine-cooling system passes back when critical-temperature is following when controller detects, excavator carries out work according to operator's instruction; When controller detects when being arranged on scope in critical-temperature of temperature that the cooling-water temperature sensor in engine-cooling system passes back, controller is to hydraulic pump proportion magnetic valve output order, this moment, the hydraulic pump proportion magnetic valve can be made the mode of operation adjustment of load down by the program of setting, order is high load capacity → economic load → light load, show to the display output order with Time Controller, remind the operator to notice that heat pattern started, and make buzzer interior alarm interval time in display; If after the hydraulic work system pattern reduced, the engine cooling water system temperature can be reduced to safe temperature, hydraulic system and motor automatically revert to last mode of operation; If after the reduction mode of operation; the engine cooling water system temperature continues to raise; the controller detected temperatures reaches alarm temperature; controller is immediately to the instruction of motor output forced idling; the buzzer buzzing always that carries in display is simultaneously reported to the police; show that excavator is overheated, and forced idling, and remind operating personnel's shutdown inspection after cooling.
In the situation that Prevention of Hydraulic System Overheating, the temperature of the utility model during with hydraulic work system is divided into safe temperature, critical-temperature and three kinds of states of alarm temperature, and the Temperature numerical of above-mentioned three kinds of states raises successively.The temperature that the hydraulic system that oil temperature sensor passes back detected when controller is when critical-temperature is following, and excavator carries out work according to operator's work order; When the temperature that detects during in critical temperature range, controller sends instruction to the hydraulic pump proportion magnetic valve, make the hydraulic pump proportion magnetic valve make the mode of operation adjustment of load down according to the program of setting, order is high load capacity → economic load → light load, show to the display output order with Time Controller, remind the operator to notice that heat pattern started, and make buzzer interior alarm interval time in display; If after the hydraulic work system pattern reduced, the temperature of hydraulic system can be reduced to safe temperature, hydraulic system and motor automatically revert to last mode of operation; If after the reduction mode of operation; the temperature of hydraulic system continues to raise; the controller detected temperatures reaches alarm temperature; controller is immediately to the instruction of motor output forced idling; the buzzer buzzing always that the while display carries is reported to the police; show that excavator is overheated, and forced idling, and remind operating personnel's shutdown inspection after cooling.
Claims (2)
1. excavator cooling system overtemperature protection system; comprise the cooling-water temperature sensor that is arranged in engine-cooling system; be arranged on the oil temperature sensor in hydraulic system; it is characterized in that: described cooling-water temperature sensor is connected by data line with oil temperature sensor and is connected with controller, and controller is connected with the hydraulic pump proportion magnetic valve with display respectively by data line.
2. excavator cooling system overtemperature protection system according to claim 1, it is characterized in that: the communication connection of described cooling-water temperature sensor, oil temperature sensor, display and hydraulic pump proportion magnetic valve and controller is all completed by the CAN bus protocol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320249607 CN203270664U (en) | 2013-05-10 | 2013-05-10 | Overheating protection device for heat removal system of excavating machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320249607 CN203270664U (en) | 2013-05-10 | 2013-05-10 | Overheating protection device for heat removal system of excavating machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203270664U true CN203270664U (en) | 2013-11-06 |
Family
ID=49501105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320249607 Expired - Fee Related CN203270664U (en) | 2013-05-10 | 2013-05-10 | Overheating protection device for heat removal system of excavating machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203270664U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201963A (en) * | 2015-10-26 | 2015-12-30 | 北京市三一重机有限公司 | Hydraulic oil temperature control system and rotary drilling rig |
-
2013
- 2013-05-10 CN CN 201320249607 patent/CN203270664U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201963A (en) * | 2015-10-26 | 2015-12-30 | 北京市三一重机有限公司 | Hydraulic oil temperature control system and rotary drilling rig |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20150510 |
|
| EXPY | Termination of patent right or utility model |