CN202767161U - Device used for diagnosing excavator walking deflection breakdown - Google Patents
Device used for diagnosing excavator walking deflection breakdown Download PDFInfo
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- CN202767161U CN202767161U CN 201220420142 CN201220420142U CN202767161U CN 202767161 U CN202767161 U CN 202767161U CN 201220420142 CN201220420142 CN 201220420142 CN 201220420142 U CN201220420142 U CN 201220420142U CN 202767161 U CN202767161 U CN 202767161U
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- control valve
- working oil
- oil path
- walked
- center steering
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Abstract
The utility model discloses a device used for diagnosing excavator walking deflection breakdown, and belongs to the field of devices diagnosing walking of an excavator. The device used for diagnosing the excavator walking deflection breakdown comprises a front pump, a rear pump, a left walking control valve, a right walking control valve, a central revolved body, a left walking motor, a right walking motor, a plurality of flow sensors, a pressure sensor, a controller and a display. The device used for diagnosing the excavator walking deflection breakdown has the advantages that an operator can judge the reason causing the excavator walking deflection breakdown according to the signals input into the display through the device, and can directly repair a breakdown portion, and the trouble that previously the operator needs to exchange all sections of oil lines and oil pipes to exclude breakdown one by one and find the reason of the breakdown is avoided, the situation that a hydraulic system is polluted in a diagnosing process is avoided, and the function of intelligently diagnosing the breakdown of the excavator and maintenance efficiency are improved.
Description
Technical field
The utility model relates to a kind of device of diagnosing excavator walking sideslip fault, belongs to diagnosis excavator walking device field.
Background technology
When handling the excavator straight line moving, generally be to be separately respectively left and right running motor fuel feeding by front pump and rear pump, and the most excavator adopts double pump total power variable system more, the two pumps output flow is identical, so under normal circumstances, when handling simultaneously the both sides running motor and travelling forward or backward, both sides running motor rotating speed is identical, the excavator straight-line travelling.And in fact because of the existence of the inevitable factor such as leakage or Hydraulic Elements dimensioned error, all can cause the variation that flows into both sides running motor flow affects the excavator straight-line travelling.But as long as the walking that produces in regulation allowed band skew is also qualified.Some break down because of Hydraulic Elements or use for a long time the caused walking such as the reason that produces wearing and tearing to be offset when exceeding the scope of defined, are called the walking sideslip.
Common excavator walking sideslip fault mainly contains following reason and causes: the equalizing valve in the stopping brake oil circuit that 1, the centre revolving joint sealing ring damages, booty enters excavator one side; 2, running motor safety valve leakage of oil; 3, dirt stops up the aperture of the equalizing valve of whole transmission system, causes stopping brake power not remove; 4, the action of the walking valve core of main valve of excavator deflection is malfunctioning; 5, the walking oil sucting valve of excavator deflection one side damages; 6, different about the track tensioning degree; 7, oil pump performance descends; 8, the output pressure of the walking proportioning valve of excavator deflection one side is excessively low.And solution commonly used is to relate on the different section oil circuits of walking action, and by the pressure of be assigned a new job oil pipe or surveying work oil circuit and guide's oil circuit, the trouble-shooting nidus solves after definite abort situation and reason accordingly step by step.But because excavator operating mode of living in is abominable, the surrounding environment dust is many, so exchange when each section oil circuit oil pipe is got rid of the looking up the fault reason one by one hydraulic oil is polluted.And owing to the reason that causes walking sideslip fault is a lot, often will also test through repeatedly changing pipeline so determine guilty culprit, not only time-consuming but also require great effort.
Summary of the invention
Problem for above-mentioned prior art existence, the utility model provides a kind of device of diagnosing excavator walking sideslip fault, but quick diagnosis has the reason place that causes excavator walking sideslip fault, reduce not only consuming time but also consumption power and search the operation that causes failure cause, and the generation of the situation such as may cause that hydraulic system is polluted in the middle of the search procedure, save time and improve maintenance efficiency when manpower.
To achieve these goals, the technical solution adopted in the utility model is: a kind of device of diagnosing excavator walking sideslip fault, comprise front pump, rear pump, left lateral is walked control valve, right lateral is walked control valve, the center steering body, left running motor and right running motor, also comprise several flow transmitters, pressure sensor, controller and display, described flow transmitter add respectively to be located at front pump and left lateral and to walk on the working oil path between the control valve, left lateral is walked on the working oil path between control valve and the center steering body, on the working oil path between center steering body and the left running motor, rear pump and right lateral are walked on the working oil path between the control valve, right lateral is walked on the working oil path between control valve and the center steering body and on the working oil path between center steering body and the right running motor; Add be located at that left lateral is walked on the working oil path between control valve and the center steering body, on the working oil path between center steering body and the left running motor, right lateral is walked on the working oil path between control valve and the center steering body and center steering body and right running motor between working oil path on each flow transmitter be electrically connected with a pressure switch respectively, and every group adds the flow transmitter that is located at the corresponding position, both sides and is electrically connected with display by a controller respectively; Described pressure sensor adds respectively is located at that left lateral is walked control valve and right lateral is walked on guide's oil circuit at control valve two ends, and each pressure sensor is electrically connected with a pressure switch respectively, and is electrically connected with display by a controller.
Add be located at that left lateral is walked on the working oil path between control valve and the center steering body, on the working oil path between center steering body and the left running motor, right lateral is walked on the working oil path between control valve and the center steering body and the number of the flow transmitter on the working oil path between center steering body and the right running motor is 2.
Every flow quantity sensor or pressure sensor detect flow value or the force value on the oil circuit of living in constantly, and detected value passed to corresponding controllers with signal form, when the sensor signal that is input to controller two ends equates or in setting range the time, controller sends weak signal to display, and expression sensor place oil circuit is normal; When the sensor signal that is input to the controller two ends exceeded setting range, controller sent strong signal to display, and expression sensor place oil circuit has fault, diagnoses the nidus that is out of order according to each controller output signal.
The beneficial effects of the utility model are: operating personnel can be input to the signal that shows in the display according to this device, judge the reason place that causes excavator walking sideslip fault, directly keep in repair for the fault place and get final product, avoided to exchange the trouble that each section oil circuit oil pipe is got rid of the looking up the fault reason one by one in the past, and may cause in the middle of the process that hydraulic system is subject to the generation of pollution condition, improved function and the maintenance efficiency of the intelligent diagnostics fault of excavator.
Description of drawings
Fig. 1 is control principle block diagram of the present utility model;
Hydraulic schematic diagram when Fig. 2 is meta state of the present utility model;
Hydraulic schematic diagram when Fig. 3 is the utility model straight line moving.
Among the figure: 1, pioneer pump, 2, left lateral walks pilot valve, 3, right lateral walks pilot valve, 4, front pump, 5, flow transmitter, 6, pressure sensor, 7, rear pump, 8, left lateral walks control valve, 9, right lateral is walked control valve, and 10, the center steering body, 11, left running motor, 12, right running motor.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
As shown in Figure 1, the utility model comprises front pump, rear pump, left lateral is walked control valve, right lateral is walked control valve, the center steering body, left running motor and right running motor, also comprise several flow transmitters, pressure sensor, controller and display, described flow transmitter add respectively to be located at front pump and left lateral and to walk on the working oil path between the control valve, left lateral is walked on the working oil path between control valve and the center steering body, on the working oil path between center steering body and the left running motor, rear pump and right lateral are walked on the working oil path between the control valve, right lateral is walked on the working oil path between control valve and the center steering body and on the working oil path between center steering body and the right running motor; Add be located at that left lateral is walked on the working oil path between control valve and the center steering body, on the working oil path between center steering body and the left running motor, right lateral is walked on the working oil path between control valve and the center steering body and center steering body and right running motor between working oil path on each flow transmitter be electrically connected with a pressure switch respectively, and every group adds the flow transmitter that is located at the corresponding position, both sides and is electrically connected with display by a controller respectively; Described pressure sensor adds respectively is located at that left lateral is walked control valve and right lateral is walked on guide's oil circuit at control valve two ends, and each pressure sensor is electrically connected with a pressure switch respectively, and is electrically connected with display by a controller.
Every flow quantity sensor or pressure sensor detect flow value or the force value on the oil circuit of living in constantly, and detected value passed to corresponding controllers with signal form, when the sensor signal that is input to controller two ends equates or in setting range the time, controller sends weak signal to display, and expression sensor place oil circuit is normal; When the sensor signal that is input to the controller two ends exceeds setting range, controller sends strong signal to display, expression sensor place oil circuit has fault, diagnoses the nidus that is out of order according to each controller output signal, directly keeps in repair for the fault place to get final product.
Embodiment:
As shown in Figures 2 and 3, the working oil path of walking between the control valve 8 at front pump 4 and left lateral adds a flow transmitter 5; The working oil path of walking between the control valve 9 at rear pump 7 and right lateral adds a flow transmitter 5.The working oil path of walking between control valve 8 and the center steering body 10 at left lateral adds two flow transmitters 5, is controlled the break-make of its signal by connected pressure switch.The working oil path of walking between control valve 9 and the center steering body 10 at right lateral adds two flow transmitters 5, is controlled the break-make of its signal by connected pressure switch.Working oil path between center steering body 10 and left running motor 11 adds two flow transmitters 5, is controlled the break-make of its signal by connected pressure switch.Working oil path between center steering body 10 and right running motor 12 adds two flow transmitters 5, is controlled the break-make of its signal by connected pressure switch.Walk at left lateral on two ends guide's oil circuit of control valve 8 and add respectively a pressure sensor 6, controlled the break-make of its signal by connected pressure switch.Walk at right lateral on two ends guide's oil circuit of control valve 9 and also add respectively two pressure sensors 6, controlled the break-make of its signal by connected pressure switch.The sensor of corresponding position, the left and right sides is electrically connected with a controller respectively, and each controller output port respectively port of display connects.
Each controller receives the sensor signal of both sides walking oil circuit, processes contrast, if the both sides input signal equates or when differing in setting range, and controller output weak signal, if when the both sides input signal exceeds setting range, controller is exported strong signal.
When driver's operation excavator straight line moving:
Example one: input strong signal if display shows w port, y port, z port, during x port input weak signal, can judge that there is fault in main pump assembly place.
Example two: input strong signal if display shows x port, y port, z port, during w port input weak signal, can judge that there is fault in walking pilot valve place.
Example three: input strong signal if display shows y port, z port, when w port, x port input weak signal, can judge that there is fault in walking control valve place.
Example four: input strong signal if display shows the z port, when w port, x port, y port input weak signal, can judge that there is fault in center steering body place.
Example five: if when display shows w port, x port, y port, z port input weak signal, can judge that the running motor assembly exists fault or both sides track tensioning degree varies sample.
Claims (2)
1. device of diagnosing excavator walking sideslip fault, comprise front pump, rear pump, left lateral is walked control valve, right lateral is walked control valve, the center steering body, left running motor and right running motor, it is characterized in that, also comprise several flow transmitters, pressure sensor, controller and display, described flow transmitter add respectively to be located at front pump and left lateral and to walk on the working oil path between the control valve, left lateral is walked on the working oil path between control valve and the center steering body, on the working oil path between center steering body and the left running motor, rear pump and right lateral are walked on the working oil path between the control valve, right lateral is walked on the working oil path between control valve and the center steering body and on the working oil path between center steering body and the right running motor; Add be located at that left lateral is walked on the working oil path between control valve and the center steering body, on the working oil path between center steering body and the left running motor, right lateral is walked on the working oil path between control valve and the center steering body and center steering body and right running motor between working oil path on each flow transmitter be electrically connected with a pressure switch respectively, and every group adds the flow transmitter that is located at the corresponding position, both sides and is electrically connected with display by a controller respectively; Described pressure sensor adds respectively is located at that left lateral is walked control valve and right lateral is walked on guide's oil circuit at control valve two ends, and each pressure sensor is electrically connected with a pressure switch respectively, and is electrically connected with display by a controller.
2. a kind of device of diagnosing excavator walking sideslip fault according to claim 1, it is characterized in that, described add be located at that left lateral is walked on the working oil path between control valve and the center steering body, on the working oil path between center steering body and the left running motor, right lateral is walked on the working oil path between control valve and the center steering body and the number of the flow transmitter on the working oil path between center steering body and the right running motor is 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220420142 CN202767161U (en) | 2012-08-22 | 2012-08-22 | Device used for diagnosing excavator walking deflection breakdown |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220420142 CN202767161U (en) | 2012-08-22 | 2012-08-22 | Device used for diagnosing excavator walking deflection breakdown |
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| Publication Number | Publication Date |
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| CN202767161U true CN202767161U (en) | 2013-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220420142 Withdrawn - After Issue CN202767161U (en) | 2012-08-22 | 2012-08-22 | Device used for diagnosing excavator walking deflection breakdown |
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| CN (1) | CN202767161U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828540A (en) * | 2012-08-22 | 2012-12-19 | 徐州徐工挖掘机械有限公司 | Device for diagnosing walking deviation fault of excavator |
-
2012
- 2012-08-22 CN CN 201220420142 patent/CN202767161U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828540A (en) * | 2012-08-22 | 2012-12-19 | 徐州徐工挖掘机械有限公司 | Device for diagnosing walking deviation fault of excavator |
| CN102828540B (en) * | 2012-08-22 | 2014-10-22 | 徐州徐工挖掘机械有限公司 | Device for diagnosing walking deviation fault of excavator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130306 Effective date of abandoning: 20141022 |
|
| RGAV | Abandon patent right to avoid regrant |