CN102400978A - Coal mine machinery hydraulic oil tank with stroke detecting device - Google Patents
Coal mine machinery hydraulic oil tank with stroke detecting device Download PDFInfo
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- CN102400978A CN102400978A CN2011103539551A CN201110353955A CN102400978A CN 102400978 A CN102400978 A CN 102400978A CN 2011103539551 A CN2011103539551 A CN 2011103539551A CN 201110353955 A CN201110353955 A CN 201110353955A CN 102400978 A CN102400978 A CN 102400978A
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- piston rod
- detecting device
- magnetic
- displacement transducer
- coal mine
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Abstract
The invention relates to a coal mine machinery hydraulic oil tank with a stroke detecting device, which is provided with a piston rod and the stroke detecting device, wherein the stroke detecting device is arranged on a lower end cover of an oil cylinder and is matched with the piston rod; the stroke detecting device comprises a magnetic sensitive displacement sensor and a signal processing unit; the magnetic sensitive displacement sensor is close to or contacted with the surface of the piston rod; three magnetic detecting elements are integrated in the magnetic sensitive displacement sensor; the phase difference of generated signals of two adjacent magnetic detecting elements is 90 degrees; and the magnetic detecting direction of the magnetic detecting element is opposite to the center of the piston rod and is orthogonal to the axis of the piston rod. In the coal mine machinery hydraulic oil tank, the stroke detecting device is matched with the piston rod, the replacement or the maintenance after installation does not relate to the inner part of the oil cylinder, and the conditions of oil cylinder disassembly and oil leakage are avoided; and in the stroke detecting device, the structure is small, only screws need to be disassembled when in maintenance or replacement, the replacement can be finished by one person, and the technical problems that the existing detecting device is easily damaged, and is difficult to overhaul and maintain are solved.
Description
Technical field
The present invention relates to the hydraulic equipment of colliery mining machinery, particularly a kind of coal mine machinery hydraulic jack of tape travel detection device.
Background technique
The working environment of colliery extractive equipment is more abominable, and corrosive air and underground infiltration are anticorrosion unfavorable to the oil cylinder piston bar, and foreign matters such as the coal cinder that falls produce piston rod and impact, and the maintenance of oil cylinder and device for detecting distance of travel thereof is very inconvenient.
Generally speaking, colliery mining machinery hydraulic jack all adopts the chrome-plated piston bar, and anti-corrosion capability is relatively poor, because chromium plating face surface hardness is lower, its impact resistance and antiwear property are also relatively poor, and the oil cylinder life-span is shorter relatively.
Adopt the built-in Linear displacement transducer of the many employings of device for detecting distance of travel of chrome-plated piston bar, be installed in the oil cylinder afterbody, it is inner that its waveguide inserts piston rod.Because the Linear displacement transducer security level is lower, is prone to cause the sensor scaling loss under the soaked situation; Trouble is changed in the Linear displacement transducer maintenance, if damage, because spatial limitation must be carried out oil cylinder overall pulling down from equipment more emat sensor, and can cause leaking outside of hydraulic oil again.
Summary of the invention
The technical problem that the present invention will solve is: in order to overcome the deficiency in the existing technology; The present invention provides a kind of coal mine machinery hydraulic jack of tape travel detection device; Antiseptic power is high, wear resistance is strong, the life-span is longer, and device for detecting distance of travel is not fragile, easy to maintenance.
The technical solution adopted for the present invention to solve the technical problems is: a kind of coal mine machinery hydraulic jack of tape travel detection device; Has piston rod; Described piston rod has the matrix of carbon steel or alloyed steel, and matrix surface is provided with groove width and the wide groove that equates in interval, and described matrix surface has ceramic layer; Also have be installed on the oil cylinder lower end cap and with the supporting device for detecting distance of travel of piston rod, described device for detecting distance of travel comprises magnetosensitive sense displacement transducer; In order to cooperate magnetosensitive sense displacement transducer to carry out signal processing; Described device for detecting distance of travel also comprises and links to each other with magnetosensitive sense displacement transducer and the output signal of magnetosensitive sense displacement transducer is handled the signal processing unit with computing; Magnetosensitive sense displacement transducer is near to or in contact with the surface of ceramic cylinder rod; Inner integrated three magnetic detecting elements of magnetosensitive sense displacement transducer; The phase difference of the generation signal of adjacent two magnetic detecting elements is 90 °, the magnetic force detection side of magnetic detecting element to over against the center of ceramic cylinder rod and with the orthogonal axe of ceramic cylinder rod.
The applying of magnetosensitive sense displacement transducer and ceramic cylinder rod is tighter; Be to design for the ceramic cylinder rod of having processed the indicating area, absolute position specially; The absolute position mark can be manufactured in and comprise head on the ceramic cylinder rod, any specified position of afterbody or middle part.
Described magnetic detecting element is a kind of in Hall transducer, giant magneto-resistance sensor, inductance type prober and the electric convolution prober.
The invention has the beneficial effects as follows; The coal mine machinery hydraulic jack of tape travel detection device of the present invention; Piston rod surface is ceramic coated; The obdurability, workability of metallic material etc. are not only arranged, also have the characteristic such as high temperature resistant, wear-resisting and corrosion-resistant of stupalith, improve corrosion resistance, the wear resistance of piston rod surface; With the supporting device for detecting distance of travel that is provided with of ceramic cylinder rod, back replacing or maintenance are installed do not relate to oil cylinder inside, the situation of no oil cylinder dismounting leakage of oil; The device for detecting distance of travel structure is small and exquisite, when maintenance or replacing, only needs knockout screw, and a people can accomplish replacing, and is very convenient, solves existing detection device rapid wear, repair and maintenance difficult technologies problem.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Fig. 1 is the erection drawing of the ceramic bar oil hydraulic cylinder of tape travel detection device of the present invention.
Fig. 2 is the three-dimensional exploded view of device for detecting distance of travel of the present invention.
Fig. 3 is the magnetosensitive propagated sensation sensor structural representation of device for detecting distance of travel of the present invention.
Fig. 4 is the electrical schematic diagram of device for detecting distance of travel of the present invention.
Among the figure 1, device for detecting distance of travel, 11, magnetosensitive sense displacement transducer, 12, sealing cover, 13, upper shell, 14, internal frame, 15, lower shell body, 2, the oil cylinder lower end cap.
Embodiment
Combine accompanying drawing that the present invention is done further detailed explanation now.These accompanying drawings are the schematic representation of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.
Like Fig. 1, Fig. 2, shown in Figure 3; A kind of coal mine machinery hydraulic jack of tape travel detection device has piston rod, and piston rod has the matrix of carbon steel or alloyed steel; Matrix surface is provided with groove width and the wide groove that equates in interval; Matrix surface has ceramic layer, also have be installed on the oil cylinder lower end cap 2 and with the supporting device for detecting distance of travel 1 of piston rod, device for detecting distance of travel 1 comprises magnetosensitive sense displacement transducer 11.
Device for detecting distance of travel 1 has sealing cover 12, upper shell 13, internal frame 14, lower shell body 15, also comprises linking to each other with magnetosensitive sense displacement transducer 11 and the output signal of magnetosensitive sense displacement transducer 11 being handled the signal processing unit with computing.
As shown in Figure 4; Magnetosensitive sense displacement transducer 11 is near to or in contact with the surface of ceramic cylinder rod; Magnetosensitive sense displacement transducer 11 is inner integrated three magnetic detecting elements; The phase difference of the generation signal of adjacent two magnetic detecting elements is 90 °, the magnetic force detection side of magnetic detecting element to over against the center of ceramic cylinder rod and with the orthogonal axe of ceramic cylinder rod.Each magnetic detecting element reads groove information on the piston rod, forms the signal have displacement information, carries out signal combination and internal arithmetic processing through signal processing unit, be converted into have run-length data electrical signal transfer to the rear centralized control system.
Magnetic detecting element can be a kind of in Hall transducer, giant magneto-resistance sensor, inductance type prober and the electric convolution prober.
With above-mentioned foundation desirable embodiment of the present invention is enlightenment, and through above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this invention technological thought.The technical scope of this invention is not limited to the content on the specification, must confirm its technical scope according to the claim scope.
Claims (2)
1. the coal mine machinery hydraulic jack of a tape travel detection device; Has piston rod; Described piston rod has the matrix of carbon steel or alloyed steel; Matrix surface is provided with groove width and the wide groove that equates in interval; It is characterized in that: described matrix surface has ceramic layer, also have be installed in that oil cylinder lower end cap (2) is gone up and with the supporting device for detecting distance of travel (1) of piston rod, described device for detecting distance of travel (1) comprises magnetosensitive sense displacement transducer (11) and links to each other with magnetosensitive sense displacement transducer (11) and the output signal of magnetosensitive sense displacement transducer (11) is handled the signal processing unit with computing; Magnetosensitive sense displacement transducer (11) is near to or in contact with the surface of ceramic cylinder rod; Inner integrated three magnetic detecting elements of magnetosensitive sense displacement transducer (11), the phase difference of the generation signal of adjacent two magnetic detecting elements is 90 °, the magnetic force detection side of magnetic detecting element to over against the center of ceramic cylinder rod and with the orthogonal axe of ceramic cylinder rod.
2. the coal mine machinery hydraulic jack of tape travel detection device as claimed in claim 1 is characterized in that: described magnetic detecting element is a kind of in Hall transducer, giant magneto-resistance sensor, inductance type prober and the electric convolution prober.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103539551A CN102400978A (en) | 2011-11-10 | 2011-11-10 | Coal mine machinery hydraulic oil tank with stroke detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103539551A CN102400978A (en) | 2011-11-10 | 2011-11-10 | Coal mine machinery hydraulic oil tank with stroke detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102400978A true CN102400978A (en) | 2012-04-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103539551A Pending CN102400978A (en) | 2011-11-10 | 2011-11-10 | Coal mine machinery hydraulic oil tank with stroke detecting device |
Country Status (1)
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| CN (1) | CN102400978A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103375454A (en) * | 2012-04-20 | 2013-10-30 | 江苏武进液压启闭机有限公司 | Hydraulic cylinder with built-in stroke detecting device |
| CN104279205A (en) * | 2013-07-03 | 2015-01-14 | 舍弗勒技术有限两合公司 | Piston cylinder device, especially device used in separation system of motor vehicle |
| CN105465099A (en) * | 2015-12-21 | 2016-04-06 | 陈陆曦 | Method for improving displacement detection precision of actuation-sensing integration hydraulic cylinder |
| CN105782287A (en) * | 2016-04-07 | 2016-07-20 | 芜湖聚达汽车零部件有限公司 | Clutch main cylinder provided with sensor |
| CN105782275A (en) * | 2016-04-07 | 2016-07-20 | 芜湖聚达汽车零部件有限公司 | Clutch main cylinder assembly |
| CN109404365A (en) * | 2018-12-14 | 2019-03-01 | 龙工(福建)液压有限公司 | A kind of method of gas-liquid mixed detection hydraulic cylinder |
-
2011
- 2011-11-10 CN CN2011103539551A patent/CN102400978A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103375454A (en) * | 2012-04-20 | 2013-10-30 | 江苏武进液压启闭机有限公司 | Hydraulic cylinder with built-in stroke detecting device |
| CN104279205A (en) * | 2013-07-03 | 2015-01-14 | 舍弗勒技术有限两合公司 | Piston cylinder device, especially device used in separation system of motor vehicle |
| CN104279205B (en) * | 2013-07-03 | 2018-05-25 | 舍弗勒技术股份两合公司 | Piston-cylinder apparatus, the piston-cylinder apparatus in particular for the piece-rate system in motor vehicles |
| CN105465099A (en) * | 2015-12-21 | 2016-04-06 | 陈陆曦 | Method for improving displacement detection precision of actuation-sensing integration hydraulic cylinder |
| CN105782287A (en) * | 2016-04-07 | 2016-07-20 | 芜湖聚达汽车零部件有限公司 | Clutch main cylinder provided with sensor |
| CN105782275A (en) * | 2016-04-07 | 2016-07-20 | 芜湖聚达汽车零部件有限公司 | Clutch main cylinder assembly |
| CN109404365A (en) * | 2018-12-14 | 2019-03-01 | 龙工(福建)液压有限公司 | A kind of method of gas-liquid mixed detection hydraulic cylinder |
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Application publication date: 20120404 |