CN101929484A - Built-in piston cylinder for stroke detecting device - Google Patents
Built-in piston cylinder for stroke detecting device Download PDFInfo
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- CN101929484A CN101929484A CN2009101516134A CN200910151613A CN101929484A CN 101929484 A CN101929484 A CN 101929484A CN 2009101516134 A CN2009101516134 A CN 2009101516134A CN 200910151613 A CN200910151613 A CN 200910151613A CN 101929484 A CN101929484 A CN 101929484A
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Abstract
The invention provides a built-in piston cylinder for a stroke detecting device, which is arranged from one end, belongs to the field of a stroke detection hydraulic cylinder, and solves the problems of complicated structure, difficult manufacture, assembly and maintenance, small endured pressure and piston cylinder unavailability of the prior art. The device comprises an output cable, a displacement sensor head, a displacement sensing rod, a piston, a piston rod, a cylinder body and a cylinder cover, wherein the displacement sensor head and the displacement sensing rod are arranged inside and outside the outward end of the piston rod respectively; a cavity is reserved inside the piston rod; one end of a connecting pipe is fixed on the bottom of the cylinder body; the other end of the connecting pipe is provided with a magnetic ring, and extends inside the cavity of the piston rod; and the displacement sensing rod extends into the connecting pipe after passing through the magnetic ring. The built-in piston cylinder has low manufacture cost, is firm and reliable, can endure pressure over 30MPa, has wide application field, and is particularly suitable for the piston cylinder with small diameter and deep depth.
Description
Technical field
The present invention relates to oil hydraulic cylinder, especially relate to built-in piston cylinder for stroke detecting device with device for detecting distance of travel.
Background technique
In hydraulic system, the actuator of action is an oil hydraulic cylinder, oil hydraulic cylinder is divided into piston cylinder and plunger case by structural type, in order to control the action of oil hydraulic cylinder exactly, stroke to oil hydraulic cylinder will detect, no matter be piston cylinder or plunger case, commonly used all is outlet structure, exactly device for detecting distance of travel is installed in the oil hydraulic cylinder outside, the shortcoming of this structure is to be collided easily and to damage; Expose for a long time, descend because of dust causes testing precision, sensitivity and accuracy reduce.
Chinese patent (the hydraulic hoist plunger cylinder ZL03259344.9 of built-in device for detecting distance of travel) discloses a kind of like this device, the oil cylinder of hydraulic headstock gear of built-in device for detecting distance of travel comprises cylinder body and plunger, one cover displacement transducer detection device is installed in the oil cylinder fully, has overcome the shortcoming of outlet structure device for detecting distance of travel oil hydraulic cylinder.But its up-set type displacement transducer is installed in the cylinder body inner bottom part, requires to install a water proof cover; Its underneath type requires plunger inside must have bigger cavity can hold the displacement transducer head, and requires the plunger cavity inner wall smooth, so that realize being slidingly matched with the guide pipe dunnage that magnet ring is installed; Therefore these two kinds of apparatus structures more complicated is all made difficulty, installs to be difficult for inconvenient maintenance; The pressure that can bear is lower; Also have this device only to be adapted at using in the stake plug cylinder, when cylinder diameter is smaller, dark or during piston cylinder, is not easy to install and maintenance, even can't implements; Its application area is very limited.
Summary of the invention
In order to overcome the shortcoming of prior art, the invention provides a kind of built-in piston cylinder for stroke detecting device, its technological scheme is: this piston cylinder comprises output cable, displacement transducer head, piston rod, piston, magnet ring, displacement sensor bar, cylinder body and cylinder body lid, and wherein: displacement transducer head and displacement sensor bar are installed in described piston rod outside, the inside of an end outwardly respectively; Piston rod inside is cavity, has connecting tube one end to be fixed on cylinder base, and magnet ring is installed in the connecting tube the other end and extend into plunger inside; The displacement sensor bar passes magnet ring and extend in the connecting tube.
Connecting tube one end has a termination, with gland described magnet ring, magnet ring seat is fitted in the described termination, and the termination extend into plunger inside; The connecting tube the other end is fixed on cylinder base by joint, and as required, described termination and described connecting tube can be processed into an integral body; Perhaps, described termination, connecting tube and joint also can be processed into an integral body.
When piston rod and cylinder body have relative movement, displacement transducer bar and magnet ring generation relative displacement campaign, the induced signal of generation shows its stroke and control by cable output.
The present invention has expanded to built-in piston cylinder for stroke detecting device with built-in plunger-type cylinder of travel test device, and simplifies the structure greatly, and processing is simple, installs easily, and is easy to maintenance, solid and reliable, low cost of manufacture; The pressure that can bear significantly improves, and reaches more than the 30Mpa; Application is extensive, is particularly useful for little, the dark piston cylinder of cylinder diameter.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described further.
Accompanying drawing 1 built-in piston cylinder for stroke detecting device
Mark among the figure:
1-output cable 2--displacement transducer head 3-piston rod 4--gland 5--magnet ring 6--magnet ring seat 7--termination 8--displacement sensor bar 9--connecting tube 10--cylinder body 11--joint 12-piston 13-cylinder body lid
Embodiment
Built-in piston cylinder for stroke detecting device shown in the drawings, comprise output cable 1, displacement transducer head 2, piston rod 3, piston 12, magnet ring 5, displacement sensor bar 8, cylinder body 10 and cylinder body lid 13, wherein: described output cable 1, displacement transducer head 2 are installed in described piston rod 3 outside of an end outwardly, displacement sensor bar 8 is installed in described piston rod 3 inside of an end outwardly, be cavity in the piston rod 3, have connecting tube 9 one ends to be fixed on cylinder body 10 bottoms, magnet ring 5 is installed in connecting tube 9 the other ends; Displacement sensor bar 8 passes magnet ring 5 and extend in the connecting tube 9.Connecting tube 9 one ends have a termination 7, and magnet ring 5, magnet ring seat 6 usefulness glands 4 are fitted in the described termination 7, and termination 7 extend in piston 3 cavitys; The other end of connecting tube 9 is fixed on cylinder body 10 bottoms by joint 11; Gland 4, magnet ring 5 and magnet ring seat 6 all have the center hole with diameter, and displacement sensor bar 8 passes from the center hole of gland 4, magnet ring 5 and magnet ring seat 6.
When piston 3 motions, the relative displacement campaign takes place with the displacement sensor bar 8 that is installed in piston 3 in the magnet ring 5 that is installed in connecting tube 9 ends, and induced signal shows and control by cable 1 output.
Available bolt or screw connecting mode are pressed on gland 4, magnet ring seat 6 that magnet ring 5 is housed in the termination 7; Termination 7 extend into piston rod 3 cavity insides.
Connecting tube 9 adopts machinery type with being connected of termination 7, joint 11, can be to be threaded, and also can be welding or riveted joint; Joint 11 is connected with cylinder body 10, can be fine thread, also can be coarse thread or other form screw threads, even can adopt welding manner; Adopt the fine thread mode, the intensity height, self-locking property is good, and it is strong to bear vibration and impact force.As required, described connecting tube 9 and termination 7 can be processed into an integral body; Perhaps connecting tube 9 and termination 7, joint 11 are processed into an integral body; So when mounted, more flexible.
The present invention bears pressure in actual applications and reaches 30-40Mpa, can be used for multiple piston cylinder, is particularly useful for little, the dark piston cylinder of cylinder diameter; Can satisfy the requirement of different strokes, from tens millimeters to more than five meters, can both realize accurate the detection and control.Best stroke is in one meter five.
Claims (4)
1. built-in piston cylinder for stroke detecting device, comprise output cable (1), displacement transducer head (2), piston rod (3), magnet ring (5), displacement sensor bar (8), piston (12), cylinder body (10) and cylinder body lid (13), it is characterized in that: described output cable (1), displacement transducer head (2) and displacement sensor bar (8) are installed in described piston rod (3) outside of an end outwardly respectively, inner, piston rod (3) inside is cavity, have a connecting tube (9) one ends to be fixed on cylinder body (10) bottom, described magnet ring (5) is installed in connecting tube (9) the other end and extend into piston rod (3) cavity inside; Displacement sensor bar (8) passes magnet ring (5) and extend in the connecting tube (9).
2. a kind of built-in piston cylinder for stroke detecting device according to claim 1 is characterized in that: an end of described connecting tube (9) has a termination (7), with gland (4) magnet ring (5), magnet ring seat (6) is fitted in the described termination (7); The other end of connecting tube (9) is fixed on cylinder body (10) bottom by joint (11).
3. a kind of built-in piston cylinder for stroke detecting device according to claim 2 is characterized in that: described termination (7) and described connecting tube (9) are an integral body.
4. a kind of built-in piston cylinder for stroke detecting device according to claim 2 is characterized in that: described termination (7), connecting tube (9) and joint (11) are an integral body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101516134A CN101929484A (en) | 2009-06-24 | 2009-06-24 | Built-in piston cylinder for stroke detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101516134A CN101929484A (en) | 2009-06-24 | 2009-06-24 | Built-in piston cylinder for stroke detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101929484A true CN101929484A (en) | 2010-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101516134A Pending CN101929484A (en) | 2009-06-24 | 2009-06-24 | Built-in piston cylinder for stroke detecting device |
Country Status (1)
| Country | Link |
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| CN (1) | CN101929484A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996567A (en) * | 2012-11-28 | 2013-03-27 | 中冶京诚工程技术有限公司 | Hydraulic upward-pressure cylinder with displacement sensor |
| CN103511387A (en) * | 2013-09-18 | 2014-01-15 | 梁招仙 | Hydraulic oil cylinder |
| CN104895862A (en) * | 2015-05-18 | 2015-09-09 | 无锡亿利大机械有限公司 | Hydraulic oil cylinder with displacement sensor |
| CN107165888A (en) * | 2017-07-07 | 2017-09-15 | 徐州徐工液压件有限公司 | A kind of hydraulic cylinder modular construction with displacement transducer |
| CN111806448A (en) * | 2020-07-23 | 2020-10-23 | 吉林大学 | Road surface unevenness and grade real-time identification system based on deep learning |
| 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 |
| EP4389678A1 (en) | 2022-12-21 | 2024-06-26 | Hiab AB | Hydraulic cylinder assembly, and a crane comprising such assembly |
-
2009
- 2009-06-24 CN CN2009101516134A patent/CN101929484A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996567A (en) * | 2012-11-28 | 2013-03-27 | 中冶京诚工程技术有限公司 | Hydraulic upward-pressure cylinder with displacement sensor |
| CN103511387A (en) * | 2013-09-18 | 2014-01-15 | 梁招仙 | Hydraulic oil cylinder |
| CN104895862A (en) * | 2015-05-18 | 2015-09-09 | 无锡亿利大机械有限公司 | Hydraulic oil cylinder with displacement sensor |
| CN104895862B (en) * | 2015-05-18 | 2017-01-25 | 无锡亿利大机械有限公司 | Hydraulic oil cylinder with displacement sensor |
| CN107165888A (en) * | 2017-07-07 | 2017-09-15 | 徐州徐工液压件有限公司 | A kind of hydraulic cylinder modular construction with displacement transducer |
| CN107165888B (en) * | 2017-07-07 | 2019-02-22 | 徐州徐工液压件有限公司 | A kind of hydraulic cylinder modular construction with displacement sensor |
| CN111806448A (en) * | 2020-07-23 | 2020-10-23 | 吉林大学 | Road surface unevenness and grade real-time identification system based on deep learning |
| 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 |
| EP4389678A1 (en) | 2022-12-21 | 2024-06-26 | Hiab AB | Hydraulic cylinder assembly, and a crane comprising such assembly |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20101229 |