CN204000988U - A kind of hydraulic crawler excavator cutting depth control device - Google Patents
A kind of hydraulic crawler excavator cutting depth control device Download PDFInfo
- Publication number
- CN204000988U CN204000988U CN201420371882.8U CN201420371882U CN204000988U CN 204000988 U CN204000988 U CN 204000988U CN 201420371882 U CN201420371882 U CN 201420371882U CN 204000988 U CN204000988 U CN 204000988U
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- CN
- China
- Prior art keywords
- pilot pressure
- overflow valve
- controller
- control device
- cutting depth
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- Expired - Fee Related
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Abstract
The utility model is real discloses a kind of hydraulic crawler excavator cutting depth control device, comprises pilot pressure switch, engine speed sensor, controller, adjustable pressure overflow valve; Described pilot pressure switch obtains respectively swing arm decline pilot pressure signal, dipper excavates pilot pressure signal and scraper bowl excavates pilot pressure signal; Engine speed sensor is for detection of motor real-time rotate speed and pass to controller; Controller is connected with adjustable pressure overflow valve, in order to regulate the pressure of boom cylinder loculus.The utility model can improve because operating personnel judge the slack situation of excavation that in inaccurate or soil, unpredictable intensity of load causes, has improved composite move harmony in mining process, has improved excavator operating efficiency, has saved fuel consume.
Description
Technical field
The utility model relates to a kind of hydraulic crawler excavator cutting depth control device.
Background technology
Traditional excavator is in mining process, and the pressure of boom cylinder loculus is not uncontrollable.In the time that work contains unpredictable load-factor or operator in soil soil hardness is got the wrong sow by the ear, may cause excavation depth excessive, engine overload falls the unfavorable conditions such as speed, has affected operating efficiency and coordination, has wasted fuel oil.
Utility model content
The utility model provides a kind of hydraulic crawler excavator cutting depth control device, can play the effect of assisted mining.In the time that above-mentioned unfavorable condition occurs, can automatically reduce excavation depth, keep motor to work near rated power point, make that digging efficiency is higher, composite move is more smooth, effectively overcome this problem.
Technical solution adopted in the utility model is:
A kind of hydraulic crawler excavator cutting depth control device, comprises pilot pressure switch, engine speed sensor, controller, adjustable pressure overflow valve; Described pilot pressure switch comprises that swing arm decline pilot pressure switch, dipper excavate pilot pressure switch and scraper bowl excavates pilot pressure switch, is respectively used to obtain swing arm decline pilot pressure signal, dipper excavation pilot pressure signal and scraper bowl and excavates pilot pressure signal; Described engine speed sensor is for detection of motor real-time rotate speed and pass to controller; Described controller is connected with described adjustable pressure overflow valve, in order to regulate the pressure of boom cylinder loculus.
Further, described adjustable pressure overflow valve is many gears overflow valve or electric proportional pressure control valve; Described adjustable pressure overflow valve is that independently overflow valve maybe can be integrated on main control valve.
Brief description of the drawings
Accompanying drawing 1 is to excavate overload schematic diagram;
Accompanying drawing 2 is the utility model structural representations;
Accompanying drawing 3 is the utility model hydraulic diagram.
description of reference numerals
1, boom cylinder
2, pressure switch
4, adjustable pressure overflow valve
5, main control valve
6, main pump.
Detailed description of the invention
Below with reference to the drawings and specific embodiments, the utility model is described in further details.
The hydraulic crawler excavator of extensive use on Vehicles Collected from Market, generally all obtain the signals such as swing arm decline, dipper excavation, scraper bowl excavation by the pressure signal that detects pilot handle, and there is engine speed sensor, so, on existing excavator, increase an overflow valve and relative control apparatus, can build an excavation cutting depth control device described in the utility model.This example selects the overflow valve with two pressure ratings 4 that can buy on market for regulating the pressure of boom cylinder 1 loculus, with original detection on excavator together with control device, build a hydraulic crawler excavator cutting depth control device, its hydraulic schematic diagram as shown in Figure 3.
The operating principle of the present embodiment is: in the excavator course of work, controller detects direction of motion signal and the engine rotational speed signal of swing arm, dipper, scraper bowl in real time, if it is that swing arm declines and dipper excavates or scraper bowl excavates that controller detects work at present state, motor falls speed seriously simultaneously, send signal to overflow valve, the pressure of boom cylinder loculus is adjusted to a suitable value.Its controlling party block diagram as shown in Figure 2.Above-mentioned overflow valve 4 can be to be integrated on main control valve 5, can be also overflow valve independently.
Detect respectively swing arm decline pilot pressure signal, dipper excavation pilot pressure signal and scraper bowl by three pressure switches 2 and excavate pilot pressure signal, engine speed sensor detects motor real-time rotate speed and compares with engine control rotating speed of target now, in the time that actual speed exceedes 300rpm lower than rotating speed of target, send the control signal of telecommunication to overflow valve 4, its oil pressure relief is transferred to low-grade location.Reduce excavation depth by reducing the power that swing arm declines like this, make to excavate load and be no more than the rated output power of motor.
Also can adopt many gears overflow valve or electric proportional pressure control valve, the little cavity pressure of boom cylinder is carried out to multistage discrete adjustment or the adjusting of linear ratio, to improve control performance, improve control accuracy.
Above the utility model is described in detail; for one of ordinary skill in the art; according to the thought of the utility model embodiment; all can do respective change according to actual needs; as long as the various improvement that adopted technical solutions of the utility model to carry out, all within protection domain of the present utility model.
Claims (2)
1. a hydraulic crawler excavator cutting depth control device, is characterized in that, comprises pilot pressure switch, engine speed sensor, controller, adjustable pressure overflow valve; Described pilot pressure switch comprises that swing arm decline pilot pressure switch, dipper excavate pilot pressure switch and scraper bowl excavates pilot pressure switch, is respectively used to obtain swing arm decline pilot pressure signal, dipper excavation pilot pressure signal and scraper bowl and excavates pilot pressure signal; Described engine speed sensor is for detection of motor real-time rotate speed and pass to controller; Described controller is connected with described adjustable pressure overflow valve, in order to regulate the pressure of boom cylinder loculus.
2. a kind of hydraulic crawler excavator cutting depth control device according to claim 1, is characterized in that, described adjustable pressure overflow valve is many gears overflow valve or electric proportional pressure control valve; Described adjustable pressure overflow valve is that independently overflow valve maybe can be integrated on main control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420371882.8U CN204000988U (en) | 2014-07-08 | 2014-07-08 | A kind of hydraulic crawler excavator cutting depth control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420371882.8U CN204000988U (en) | 2014-07-08 | 2014-07-08 | A kind of hydraulic crawler excavator cutting depth control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204000988U true CN204000988U (en) | 2014-12-10 |
Family
ID=52041013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420371882.8U Expired - Fee Related CN204000988U (en) | 2014-07-08 | 2014-07-08 | A kind of hydraulic crawler excavator cutting depth control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204000988U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107262826A (en) * | 2017-07-21 | 2017-10-20 | 厦门理工学院 | A kind of diamond saw blade automatic edging machine |
| CN111997947A (en) * | 2020-08-31 | 2020-11-27 | 徐州徐工矿业机械有限公司 | Hydraulic system for opening and closing bucket of face shovel excavator |
| CN112281955A (en) * | 2020-10-22 | 2021-01-29 | 三一重机有限公司 | Digging machine |
-
2014
- 2014-07-08 CN CN201420371882.8U patent/CN204000988U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107262826A (en) * | 2017-07-21 | 2017-10-20 | 厦门理工学院 | A kind of diamond saw blade automatic edging machine |
| CN107262826B (en) * | 2017-07-21 | 2024-03-15 | 厦门理工学院 | Automatic edging machine for diamond saw blade |
| CN111997947A (en) * | 2020-08-31 | 2020-11-27 | 徐州徐工矿业机械有限公司 | Hydraulic system for opening and closing bucket of face shovel excavator |
| CN111997947B (en) * | 2020-08-31 | 2023-08-29 | 徐州徐工矿业机械有限公司 | Hydraulic system of front shovel excavator opening and closing bucket |
| CN112281955A (en) * | 2020-10-22 | 2021-01-29 | 三一重机有限公司 | Digging machine |
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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: 20141210 Termination date: 20160708 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |