CN202418109U - Stroke sensor for hydraulic oil cylinders - Google Patents
Stroke sensor for hydraulic oil cylinders Download PDFInfo
- Publication number
- CN202418109U CN202418109U CN 201120486883 CN201120486883U CN202418109U CN 202418109 U CN202418109 U CN 202418109U CN 201120486883 CN201120486883 CN 201120486883 CN 201120486883 U CN201120486883 U CN 201120486883U CN 202418109 U CN202418109 U CN 202418109U
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- sensor
- stroke sensor
- circuit board
- magnetic ring
- ring component
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Abstract
A stroke sensor for hydraulic oil cylinders comprises a circuit board, a sensor casing and a magnet ring component. The stroke sensor is mounted in a propelling oil cylinder of a propelling jack of a hydraulic support hydraulic oil cylinder, and used for measuring the stroke of the propelling jack of a hydraulic support. A sensor rod is internally arranged in a piston rod of an oil cylinder, and a magnet ring is internally arranged in the oil cylinder, so that a good anti-smash performance is provided; the sensor is provided with an effective damping mechanism, so that the sensor is shock resistant and has good vibration performance; the use of splicing form of the sensor circuit board is convenient for mass production of stroke sensors with different lengths; embedded threads in a sensor joint can be taken out with special tools, and are convenient to change and maintain.
Description
Technical field
The utility model relates to a kind of hydraulic jack and uses stroke sensor, relates in particular to a kind of stroke sensor that is used to measure hydraulic cylinder piston rod displacement distance based on dry reed-pipe.
Background technique
Hydraulic support is a key equipment in the coal mine fully-mechanized mining working production process, and restriction working surface production ability mainly is a hydraulic support, and the employing hydraulic support electrohydraulic control system can improve the advancing velocity of hydraulic support, improves the manufacturing efficiency of fully mechanized mining face.Hydraulic support electrohydraulic control system has adopted pressure transducer that face roof pressure is detected; Adopt stroke sensor to carry out the passing control of hydraulic support; But because working surface inclement condition; External stroke sensor is adopted in previous research, owing to often killed, smash by float coal, spoil etc., causes the stroke sensor cisco unity malfunction.For this reason, be badly in need of improving the structure and the mounting type of stroke sensor, guarantee the reliability of stroke sensor.
Summary of the invention
To the problems referred to above; The utility model proposes a kind of hydraulic jack and uses stroke sensor; Stroke sensor is installed in hydraulic jack inside, has solved the anti-problem of pounding of stroke sensor, and stroke sensor is made up of rodmeter and magnet ring; Said rodmeter is stifled by the pressure of afterbody, the Stainless Steel Tube at middle part and anterior joint are welded for three sections, requires three sections welding to keep its coaxalitys.Piston rod at oil cylinder is partly made a call to a deep hole, the stroke sensor bar inserted, and with pressing stifled killing.Have U type groove in said rodmeter joint part outside, can place seal ring and carry out sensor and rod seal, embedded screw thread makes things convenient for sensor to take out maintenance.The rodmeter internal circuit board is carried out stroke measurment; Circuit board is made up of sensor circuit and transmission circuit two-part, and wherein sensor circuit is to save the circuit board that joins by one to be welded, and is welded with dry reed-pipe and divider resistance on the sensor circuit board and constitutes; Near the magnet ring position dry reed-pipe is closed; The sensor circuit load is changed, perception is carried out in the magnet ring position, thereby measure the length that piston rod stretches out or withdraws.Adopt elastomer to support between the pressure at sensor circuit board and top is stifled; Sensor circuit board adopts the elastomer with insulating property to invest on the circuit board; Carrying out the vibration damping of sensor circuit handles; Make sensor have vibration proof impact property preferably, sensor circuit adopts full embedding to handle, and sensor circuit has barrier propterty preferably.The benefit that the present invention brings be said stroke sensor have higher security level, can shock resistance, vibration, have higher unfailing performance.
The technological scheme of the utility model is following:
A kind of stroke sensor that is used for hydraulic jack; Comprise circuit board, sensor housing and magnetic ring component; Said circuit board is arranged in the said sensor housing; Said magnetic ring component is nested with on said sensor housing, and said stroke sensor is installed in the hydraulic support hydraulic jack and passes in the passing oil cylinder of jack.
Preferred said stroke sensor with a plurality of dry reed-pipes as sensor; Said circuit board comprises a plurality of sub-circuit boards; Each dry reed-pipe and its corresponding resistance welding are on a sub-circuit plate; A plurality of sub-circuit boards are spliced into said circuit board, and said circuit board is connected with the stroke sensor control gear through connector.
Preferred said magnetic ring component is a ring; Built-in 4 magnet steel, said magnet steel is evenly distributed on the inwall of magnetic ring component, and magnetic ring component adopts the sealer embedding; Be installed on the said hydraulic jack; When hydraulic jack carried out expanding-contracting action, the relative horizontal slip of magnetic ring component and sensor housing made near the closed or disconnection of dry reed-pipe magnetic ring component.
Preferred said sensor housing is welded by head, middle part and afterbody three parts, and afterbody is stifled for pressing, and itself and middle part are welded to connect; Head is the joint with built-in screw thread, and two ends are provided with the groove that is used to place seal ring, and itself and middle part are welded to connect; Said head, middle part and afterbody are on the same axis.
Have an axial deep hole on the piston rod of preferred said hydraulic jack, sensor housing is fixed in the deep hole of piston rod of hydraulic jack, and through pressing stifled killing.
A kind of stroke sensor that is used for hydraulic jack is characterized in that: comprise circuit board, sensor housing and magnetic ring component, said circuit board is arranged in the said sensor housing; On the piston rod of oil cylinder, make a call to a deep hole; Pass piston rod to sensor and be installed on the oil cylinder, said magnetic ring component is installed on the piston rod, and is enclosed within on the sensor housing; When hydraulic jack moves; Oil cylinder and piston rod generation relative displacement make said stroke sensor and said magnetic ring component generation relative displacement, thereby carry out the stroke measurment that hydraulic support is passed jack.
Said stroke sensor with a plurality of dry reed-pipes as sensor; Said circuit board comprises a plurality of sub-circuit boards; The resistance welding of each dry reed-pipe and correspondence is on a sub-circuit plate, and a plurality of sub-circuit boards are spliced into said circuit board, are connected with control gear through connector.
Said magnetic ring component is a ring; Built-in 4 magnet steel, said magnet steel is evenly distributed on the inwall of magnetic ring component, and magnetic ring component adopts the sealer embedding; Be installed on the said hydraulic jack; When hydraulic jack carries out expanding-contracting action, the relative horizontal slip of magnetic ring component and stroke sensor, near the normal battle of the dry reed-pipe magnetic ring component is closed.
Said sensor housing is welded by head, middle part and afterbody three parts, and afterbody is stifled for pressing, and itself and middle part are welded to connect; Head is the joint with built-in screw thread, and two ends are provided for placing the groove of seal ring, and itself and middle part are welded to connect, and said head, middle part and afterbody are on the same axis.
Have an axial deep hole on the piston rod of said hydraulic jack, when stroke sensor was installed, sensor was fixed in the deep hole of piston rod of hydraulic jack, and through pressing stifled killing.
The advantage of the utility model is:
Hydraulic jack is used stroke sensor
1, rodmeter is built in the piston rod of oil cylinder, and magnet ring is built in the oil cylinder, has the better anti-performance of pounding;
2, sensor has effective damper mechanism shock resistance, vibration performance is good;
3, adopt sensor circuit board splicing form, the stroke sensor of being convenient to different length is produced in batches;
4, the embedded screw thread of sensor connector, the available dedicated instrument takes out, and is convenient for changing maintenance.
Description of drawings
Accompanying drawing 1 is the structural representation of the said stroke sensor of the utility model.
Reference character is following:
The 1-circuit board; The 2-sensor housing; The 3-magnetic ring component; The 4-dry reed-pipe; The 5-magnet steel; The 6-head; The 7-middle part; The 8-afterbody.
Embodiment
Referring to accompanying drawing 1; Its hydraulic jack comprises formations such as circuit board, sensor housing and magnetic ring component with stroke sensor, circuit board is arranged in the sensor housing, and magnetic ring component is nested with on sensor housing; Sensor with dry reed-pipe as sensor; Circuit board is spliced by a section sub-circuit board that is welded with dry reed-pipe and resistance, and head has transmission circuit, is connected with the control gear of stroke sensor through connector.Sensor housing is a long-round-shape, is welded by head, middle part and afterbody three parts, and afterbody is stifled for pressing; Itself and middle part Stainless Steel Tube crimping are welded dead, and head is a sensor connector, has built-in screw thread; Threaded end or two ends are provided for placing the groove of seal ring, and the other end of head and middle part Stainless Steel Tube is welded to connect, and require three sections welding to remain on the same axis; And the assurance weld strength, sensor tube should be able to bear bigger external pressure.During installation, make a call to an axial deep hole on the piston rod with hydraulic jack, the sensor housing that sensor is installed is built in the piston rod deep hole of hydraulic jack, and through pressing the stifled sealing that guarantees between sensor and the piston rod that kills.Sensor circuit board is built in the sensor housing, adopts elastomer and housing contacts at the sensor circuit board head, carries out the sensor vibration damping, and the enclosure interior filling epoxy resin carries out encapsulation process.Magnetic ring component is an annular, built-in magnet steel, and adopt the epoxy resin embedding to handle.Stroke sensor integral body can reach the security level of IP68, and sensor has high pressure resistant, and is corrosion-resistant, vibration resistance, and non-contact, the life-span is long, and cost is low, advantages such as noise free.
The above; Be merely the preferable embodiment of the utility model patent; But the protection domain of the utility model patent is not limited thereto; Any technician who is familiar with the present technique field is in the technical scope that the utility model patent discloses, and the variation that can expect easily or replacement all should be encompassed within the protection domain of the utility model patent.
Claims (5)
1. stroke sensor that is used for hydraulic jack; It is characterized in that: comprise circuit board, sensor housing and magnetic ring component; Said circuit board is arranged in the said sensor housing; Said magnetic ring component is nested with on said sensor housing, and said stroke sensor is installed in the hydraulic support hydraulic jack and passes in the passing oil cylinder of jack.
2. stroke sensor as claimed in claim 1; It is characterized in that: said stroke sensor with a plurality of dry reed-pipes as sensor; Said circuit board comprises a plurality of sub-circuit boards; Each dry reed-pipe and its corresponding resistance welding are on a sub-circuit plate, and a plurality of sub-circuit boards are spliced into said circuit board, and said circuit board is connected with the stroke sensor control gear through connector.
3. stroke sensor as claimed in claim 1 is characterized in that: said magnetic ring component is a ring, built-in 4 magnet steel; Said magnet steel is evenly distributed on the inwall of magnetic ring component; Magnetic ring component adopts the sealer embedding, is installed on the said hydraulic jack, when hydraulic jack carries out expanding-contracting action; The relative horizontal slip of magnetic ring component and sensor housing makes near the closed or disconnection of dry reed-pipe magnetic ring component.
4. stroke sensor as claimed in claim 1 is characterized in that: said sensor housing is welded by head, middle part and afterbody three parts, and afterbody is stifled for pressing, and itself and middle part are welded to connect; Head is the joint with built-in screw thread, and two ends are provided with the groove that is used to place seal ring, and itself and middle part are welded to connect; Said head, middle part and afterbody are on the same axis.
5. like the wherein arbitrary described stroke sensor of claim 1-4, it is characterized in that: have an axial deep hole on the piston rod of said hydraulic jack, sensor housing is fixed in the deep hole of piston rod of hydraulic jack, and through pressing stifled killing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120486883 CN202418109U (en) | 2011-11-30 | 2011-11-30 | Stroke sensor for hydraulic oil cylinders |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120486883 CN202418109U (en) | 2011-11-30 | 2011-11-30 | Stroke sensor for hydraulic oil cylinders |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202418109U true CN202418109U (en) | 2012-09-05 |
Family
ID=46742879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120486883 Expired - Lifetime CN202418109U (en) | 2011-11-30 | 2011-11-30 | Stroke sensor for hydraulic oil cylinders |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202418109U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107294363A (en) * | 2017-06-22 | 2017-10-24 | 芜湖纯元光电设备技术有限公司 | A kind of autocontrol filtering system of frequency converter |
| CN112268035A (en) * | 2020-10-22 | 2021-01-26 | 江苏徐工工程机械研究院有限公司 | Hydraulic cylinder elongation detection device |
| CN112393674A (en) * | 2020-10-28 | 2021-02-23 | 江门市英合创展电子有限公司 | Non-contact displacement sensor |
-
2011
- 2011-11-30 CN CN 201120486883 patent/CN202418109U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107294363A (en) * | 2017-06-22 | 2017-10-24 | 芜湖纯元光电设备技术有限公司 | A kind of autocontrol filtering system of frequency converter |
| CN112268035A (en) * | 2020-10-22 | 2021-01-26 | 江苏徐工工程机械研究院有限公司 | Hydraulic cylinder elongation detection device |
| CN112393674A (en) * | 2020-10-28 | 2021-02-23 | 江门市英合创展电子有限公司 | Non-contact displacement sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |
|
| CX01 | Expiry of patent term |