CN201803778U - Electronic scale for loader - Google Patents
Electronic scale for loader Download PDFInfo
- Publication number
- CN201803778U CN201803778U CN2010202124472U CN201020212447U CN201803778U CN 201803778 U CN201803778 U CN 201803778U CN 2010202124472 U CN2010202124472 U CN 2010202124472U CN 201020212447 U CN201020212447 U CN 201020212447U CN 201803778 U CN201803778 U CN 201803778U
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- CN
- China
- Prior art keywords
- damper
- scraper bowl
- pressure transducer
- hydraulic pressure
- shovel loader
- Prior art date
- 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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- Component Parts Of Construction Machinery (AREA)
Abstract
An electronic scale for a loader comprises a damper, a display instrument, a pressure pipe, a hydraulic sensor, a controller, an oil inlet pipeline of a bucket boom cylinder and a proximity switch arranged on a bucket boom support, wherein one end of the pressure pipe is connected with the probing end of the hydraulic sensor, and the other end is connected with the oil inlet pipeline of the bucket boom cylinder; the damper is arranged between the probing end of the hydraulic sensor and the pressure pipe; and signal output terminals of both the display instrument and the hydraulic sensor and the proximity switch are electrically connected with the controller respectively. When a bucket is lifted, the hydraulic sensor is prevented from damage caused by sudden increase of pressure of oil in the oil inlet pipeline of the boom cylinder, so that measuring accuracy of the electronic scale for the loader is kept for a long period of time.
Description
Technical field
The utility model belongs to the shovel loader weighing system, relates in particular to a kind of shovel loader electronic scales of the railway bulk cargo of weighing.
Background technology
Shovel loader is that a kind of cubic metre of earth and stone that is widely used in construction projects such as highway, railway, building, water power, harbour, mine is executed formula machinery, it is mainly used in bulk materials such as shovel dress soil, sandstone, lime, coal, also can dig operation to the slight shovel of works such as ore, pan soil.
In railway or the transportation of highway railway bulk cargo, in order to prevent the overload of haulage vehicle amount, electronic scales is installed on shovel loader usually, prevent the haulage vehicle overload in the source of loading.Traditional shovel loader electronic scales as shown in Figure 1, loading arm frame 11 is provided with near switch 12,13, in the axis hole 15 of loading arm 14 axial pin type sensor is installed, and is electrically connected signal processing apparatus simultaneously near switch and axial pin type sensor.
During the shovel loader electronic scale weighing, if be arranged on closed simultaneously on the swing arm frame 11 near switch 12,13, then the scraper bowl 16 of shovel loader stops to rise, the electric signal that axial pin type sensor collection in the axis hole 15 is weighed sends to controller, controller with above-said current signal amplify, after A/D conversion etc. handles, send to display instrument, show the contained quality of scraper bowl.
In order to prevent in the vehicle ' process, because Uneven road, the weighing error that causes scraper bowl to teetertotter and produced, the weighing of must stopping of the shovel loader electronic scales of the above-mentioned type has increased time of carrying railway bulk cargo.
In order to address the above problem, existing a kind of shovel loader electronic scales is provided with a side pipe on the in-line of the oil cylinder of loading shovel swing arm, and the side pipe other end connects hydraulic pressure transducer.When shovel loader transported goods, hydraulic pressure transducer was gathered the interior oil pressure of in-line of described oil cylinder, calculates the weight that is handled upside down goods by oil pressure.Because Uneven road is less to the influence of the oil pressure in the oil cylinder in-line of scraper bowl swing arm,, reduced the time of transporting goods so when transporting goods, take by weighing the weight of goods.
But, during the oil pressure of above-mentioned shovel loader electronic scales in detecting scraper bowl boom cylinder in-line,, be easy to damage hydraulic pressure transducer because the oil pressure in the oil pipe increases suddenly when starting the scraper bowl lifting, cause the decline of hydraulic pressure transducer sensitivity, influence the measuring accuracy of shovel loader electronic scales.
The utility model content
The shovel loader electronic scales that the utility model provides when the scraper bowl lifting, prevents that the oil pressure in its boom cylinder in-line from increasing suddenly, damages hydraulic pressure transducer, keeps the measuring accuracy of shovel loader electronic scales for a long time.
For realizing above-mentioned technical purpose, the utility model provides a kind of shovel loader electronic scales, comprise: the in-line of the oil cylinder of damper, display instrument, pressure pipe, hydraulic pressure transducer, controller, scraper bowl swing arm and be arranged on the scraper bowl swing arm frame near switch, described pressure pipe one end connects the end of probe of hydraulic pressure transducer, and the other end connects the in-line of the oil cylinder of scraper bowl swing arm; Described damper is arranged between the end of probe and pressure pipe of described hydraulic pressure transducer; The signal output part of described display instrument, hydraulic pressure transducer and be electrically connected controller respectively near switch.
Preferably, described is proximity Hall switch near switch.
Preferably, described damper is a hydraulic damper.
The shovel loader electronics that the utility model provides, pressure pipe one end connects the end of probe of hydraulic pressure transducer, the other end connects the in-line of the oil cylinder of scraper bowl swing arm, damper is arranged between the end of probe and pressure pipe of described hydraulic pressure transducer, when scraper bowl begins lifting, hydraulic oil in the oil cylinder in-line of scraper bowl swing arm through after the damper step-down, arrives the end of probe of hydraulic pressure transducer earlier again.Damper has been eliminated the pressure surge of the hydraulic oil in the described oil cylinder in-line, makes line pressure stable within the specific limits, has reduced hydraulic oil to the sensor impulsive force.
Other advantage of the present utility model has detailed narration in follow-up literal.
Description of drawings
Fig. 1 is the plan structure synoptic diagram of existing shovel loader electronic scales;
Fig. 2 is the structural representation of the utility model shovel loader electronic scales;
Fig. 3 is the first embodiment plan structure synoptic diagram of the utility model shovel loader electronic scales.
Embodiment
The structural representation of the utility model shovel loader electronic scales as shown in Figure 2, pressure pipe 24 1 ends connect the oil inlet pipe 25 of scraper bowl boom cylinder 21, pressure pipe 24 other ends connect the oil-in of damper 22, the oil-out of damper 22 connects the end of probe of hydraulic pressure transducer 23, on the swing arm frame of shovel loader the upper and lower limit bit switch is installed, spacing plectrum 27 is installed on the swing arm 14 of shovel loader.When scraper bowl rose, the oil pressure of the hydraulic oil of the scraper bowl boom cylinder oil inlet pipe 25 of flowing through increased suddenly, and damper is eliminated the pressure surge of hydraulic oil, and line pressure is stable within the specific limits, prevented the hydraulic oil that boosts the suddenly sensor impulsive force to hydraulic pressure transducer.
Shovel loader work scraper bowl rises, when the spacing plectrum on being arranged on the scraper bowl swing arm touches lower position switch, hydraulic pressure transducer converts the fuel injection pressure signal that detects electric signal to and sends to controller, need to prove, in order to weigh accurately, sensor will send the one-time detection signal to controller every one section setting-up time; When the spacing plectrum on being arranged on the scraper bowl swing arm touched upper limit position switch, hydraulic pressure transducer stopped to send detection signal to controller.Simultaneously, controller is handled, is calculated the mean value of weighing the signal that hydraulic pressure transducer sends, if mean value more than or equal to the setting value of controller, then controller sends alarm command.If described mean value is less than the setting value of controller, then controller control display instrument shows this on average value of weighing.
In the utility model additional embodiments, adopt Hall switch as limit switch, as shown in Figure 3, two Hall switch are installed on the swing arm frame 11 of loading shovel, last Hall switch 31 and following Hall switch 32 vertical branches, end at the scraper bowl swing arm is equipped with magnetic conductive component 33, and magnetic conductive component 33 is relative with Hall switch 31,32.When scraper bowl began to rise, magnetic conductive component 33 was relative with following Hall switch 32, and Hall element sends signal, the every interval of hydraulic pressure transducer one end time detecting primary oil pressure, and with the electric signal transmit control device of oil pressure correspondence; Scraper bowl continue to rise, and when magnetic conductive component 33 is relative with last Hall switch 32, last Hall element 32 sends signal, and hydraulic pressure transducer stops to detect oil pressure.
In the utility model additional embodiments, damper is a hydraulic damper.
Therefore, the technical scope of this utility model is not limited to the content on the instructions, also has the concrete technical application scheme of much determining according to its claim.The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (3)
1. shovel loader electronic scales, it is characterized in that, comprise: the in-line of the oil cylinder of damper, display instrument, pressure pipe, hydraulic pressure transducer, controller, scraper bowl swing arm and be arranged on limit switch group on the scraper bowl swing arm frame, described pressure pipe one end connects the end of probe of hydraulic pressure transducer, and the other end connects the in-line of the oil cylinder of scraper bowl swing arm; Described damper is arranged between the end of probe and pressure pipe of described hydraulic pressure transducer; The signal output part of described display instrument, hydraulic pressure transducer and be electrically connected controller respectively near switch.
2. according to the described shovel loader electronic scales of claim 1, it is characterized in that described limit switch is a proximity Hall switch.
3. according to the described shovel loader electronic scales of claim 2, it is characterized in that described damper is a hydraulic damper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202124472U CN201803778U (en) | 2010-06-02 | 2010-06-02 | Electronic scale for loader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202124472U CN201803778U (en) | 2010-06-02 | 2010-06-02 | Electronic scale for loader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201803778U true CN201803778U (en) | 2011-04-20 |
Family
ID=43873276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202124472U Expired - Fee Related CN201803778U (en) | 2010-06-02 | 2010-06-02 | Electronic scale for loader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201803778U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103940497A (en) * | 2014-04-24 | 2014-07-23 | 辽宁仪表研究所有限责任公司 | Electronic scale of container turnover machine |
-
2010
- 2010-06-02 CN CN2010202124472U patent/CN201803778U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103940497A (en) * | 2014-04-24 | 2014-07-23 | 辽宁仪表研究所有限责任公司 | Electronic scale of container turnover machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110420 Termination date: 20130602 |