CN203410304U - Automatic acceleration control system of excavator - Google Patents
Automatic acceleration control system of excavator Download PDFInfo
- Publication number
- CN203410304U CN203410304U CN201320362797.0U CN201320362797U CN203410304U CN 203410304 U CN203410304 U CN 203410304U CN 201320362797 U CN201320362797 U CN 201320362797U CN 203410304 U CN203410304 U CN 203410304U
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- China
- Prior art keywords
- walking
- valve
- control system
- main pump
- pilot
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
Abstract
The utility model relates to an automatic acceleration control system of an excavator. The automatic acceleration control system of the excavator comprises a first main pump, a second main pump and a pilot pump, wherein the first main pump and the second main pump are connected to a right walking motor and a left walking motor by a multitandem valve; the multitandem valve is also connected with a straight walking valve and a walking cutoff valve; the pilot valve is connected with a pilot valve bank. The automatic acceleration control system of the excavator is characterized by also comprising a walking pilot pressure sensor, and the walking pilot pressure sensor is connected with the walking cutoff valve. On the basis of the original control system, the walking pilot pressure senor is added; when an operator carries out a walking operation, a controller detects the pressure of the walking pilot pressure sensor; when the pressure reaches to a preset value, the controller emits an acceleration instruction, an engine instantly speeds up, the flow of the main pumps is increased, the walking speed is instantly increased, and potential safety hazards existing in the original scheme are removed.
Description
Technical field
The utility model relates to a kind of excavating machine automatic raising speed control system, is specifically related to a kind of crawler hypraulic excavator straight line moving operation driving engine automatic raising speed control system.
Background technology
Along with the development of excavating machine technology, multifunction, an intelligent trend that has become excavating machine development.This just requires excavating machine not only can adapt to various operating modes, but also will be applicable to various working environments.When irrealizable, only have by even change system of other ways and control and just may solve, straight line moving function such as excavating machine, no matter at a high speed or low-speed motion state, the speed of travel when heavily loaded pattern is one to arrive surely required standard, but user can be with standard operation pattern underloading work pattern even in practical work process, and the speed of travel can reduce like this, in comparatively special workplace, this is danger close.
Summary of the invention
The technical problems to be solved in the utility model is while making crawler hypraulic excavator straight line moving, and the speed of travel improves, and meets user demand.
In order to solve the problems of the technologies described above, the technical solution of the utility model has been to provide a kind of excavating machine automatic raising speed control system, comprise the first main pump, the second main pump and pioneer pump, the first main pump and the second main pump connect right running motor and left running motor via multiway valve, multiway valve also connects straight travel valve and walking shutoff valve, pioneer pump connects pilot valves, it is characterized in that: also comprise walking pilot pressure sensor, this walking pilot pressure sensor connects walking shutoff valve.
The utility model is on the basis of original control system, increase a walking pilot pressure sensor, when operator does walking operation, controller is by detecting the walk pressure of pressure sensor of guide, and when pressure reaches preset value, controller will send a speedup instruction, driving engine is speedup immediately, main pump flow increases rapidly, and the speed of travel improves at once, solves the potential safety hazard that former scheme exists.
Accompanying drawing explanation
The schematic diagram of a kind of excavating machine automatic raising speed control system that Fig. 1 provides for the utility model.
The specific embodiment
For the utility model is become apparent, hereby with preferred embodiment, and coordinate accompanying drawing to be described in detail below.
A kind of excavating machine automatic raising speed control system that the utility model provides is comprised of electricity, liquid system components and parts such as the first main pump 1, the second main pump 2, right running motor 3, left running motor 4, multiway valve 5, walking pilot pressure sensor 6, straight travel valve 7, walking shutoff valve 8, pilot valves 9, pioneer pump 10 and controllers.The first main pump 1 and the second main pump 2 connect right running motor 3 and left running motor 4 via multiway valve 5, multiway valve 5 also connects straight travel valve 7 and walking shutoff valve 8, pioneer pump 10 connects pilot valves 9, also comprises walking pilot pressure sensor 6, and this walking pilot pressure sensor 6 connects walking shutoff valve 8
Control system mode in former scheme, assembling walking pilot pressure sensor 6, single walking operation control cannot judge, thus cannot realize walking raising speed function, also just cannot elevator system flow, the speed of travel also cannot automatic lifting.
Existing scheme, wholely added a walking pilot pressure sensor 6, when the operation Time Controller of walking is by the walk pressure of pilot pressure sensor 6 of detection, when pressure is greater than preset value 6bar, controller is controlled throttle motor immediately, if electronic fuel injection engine, controller sends instructions immediately to vehicle-mounted ECU, makes engine speed be increased to rapidly setting value.Setting value be by under each mode of operation in original control system and the concrete rotating speed set of each gear arrange for basis, if maximum speed of revolution has arrived the rated speed of rotation of driving engine, the tachometer value of automatic raising speed is just made as 0rpm so, if lower than rated speed of rotation, setting value is exactly that rated speed of rotation deducts maximum speed of revolution so, when setting principle is exactly slow speed of revolution, raising speed scope more greatly, during high rotating speed, raising speed scope is just less, rotating speed after automatic raising speed is not greater than the rated speed of rotation of driving engine in a word, general automatic raising speed scope is more reasonable at 100-500rpm, after engine speed promotes, due to the first main pump 1, the discharge capacity of the second main pump 2 is constant, rotating speed improves, the flow of system increases, hydraulic oil is through multiway valve 5, arrive again left running motor 4, right running motor 3, so the speed of travel is promoted.And then meet under each operating mode or specific condition.
The utility model walking automatic raising speed control method is except for also can be used for the similar place of other construction machinery and equipment crawler hypraulic excavator hydraulic efficiency pressure system.
Claims (1)
1. an excavating machine automatic raising speed control system, comprise the first main pump (1), the second main pump (2) and pioneer pump (10), the first main pump (1) and the second main pump (2) connect right running motor (3) and left running motor (4) via multiway valve (5), multiway valve (5) also connects straight travel valve (7) and walking shutoff valve (8), pioneer pump (10) connects pilot valves (9), it is characterized in that: also comprise walking pilot pressure sensor (6), this walking pilot pressure sensor (6) connects walking shutoff valve (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320362797.0U CN203410304U (en) | 2013-06-21 | 2013-06-21 | Automatic acceleration control system of excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320362797.0U CN203410304U (en) | 2013-06-21 | 2013-06-21 | Automatic acceleration control system of excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203410304U true CN203410304U (en) | 2014-01-29 |
Family
ID=49973223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320362797.0U Expired - Fee Related CN203410304U (en) | 2013-06-21 | 2013-06-21 | Automatic acceleration control system of excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203410304U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113359694A (en) * | 2020-03-02 | 2021-09-07 | 徐州徐工挖掘机械有限公司 | Excavator linear walking control device based on satellite positioning and control method thereof |
-
2013
- 2013-06-21 CN CN201320362797.0U patent/CN203410304U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113359694A (en) * | 2020-03-02 | 2021-09-07 | 徐州徐工挖掘机械有限公司 | Excavator linear walking control device based on satellite positioning and control method thereof |
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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: 20140129 Termination date: 20160621 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |