CN101929485A - Built-in plunger-type cylinder of travel test device - Google Patents
Built-in plunger-type cylinder of travel test device Download PDFInfo
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- CN101929485A CN101929485A CN2009101523848A CN200910152384A CN101929485A CN 101929485 A CN101929485 A CN 101929485A CN 2009101523848 A CN2009101523848 A CN 2009101523848A CN 200910152384 A CN200910152384 A CN 200910152384A CN 101929485 A CN101929485 A CN 101929485A
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Abstract
The invention provides a built-in plunger-type cylinder of a travel test device, belonging to the field of travel test hydraulic cylinders and solving the problems of complex structure, difficult manufacturing, installation and maintenance and small bearing pressure in the prior art. The built-in plunger-type cylinder comprises an output cable, a displacement sensor head, a plunger, a magnet ring, a displacement sensing rod and a cylinder body. The built-in plunger-type cylinder installed from two ends is characterized in that the displacement sensor head and the displacement sensing rod are respectively installed outside and inside the bottom part of the cylinder body; the magnet ring is installed on the end part of the plunger; and the displacement sensing rod penetrates through the magnet ring to stretch into the interior cavity of the plunger. Another built-in plunger-type cylinder installed from one end is characterized in that the displacement sensor head and the displacement sensing rod are respectively installed outside and inside the outer end part of the plunger; the magnet ring is installed and fixed on a connecting pipe of the bottom part of the cylinder and stretches into the cavity of the plunger; and the displacement sensing rod stretches into the connecting pipe. The plunger-type cylinder has fastness, reliability, low cost and wide application fields, can bear a pressure of above 30 MPa and especially is applied to the plunger-type cylinder with a small and deep cylinder diameter.
Description
Technical field
The present invention relates to oil hydraulic cylinder, especially relate to a kind of built-in plunger-type cylinder of travel test device with device for detecting distance of travel.
Background technique
In hydraulic system, the actuator of action is an oil hydraulic cylinder, and 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, for less, the dark plunger case of cylinder diameter, be not easy to install and maintenance, even can't implement, its application area is very limited.
Summary of the invention
In order to overcome existing defective with the device for detecting distance of travel plunger case, the invention provides a kind of built-in plunger-type cylinder of travel test device, its technological scheme is: this plunger case comprises output cable, displacement transducer head, plunger, magnet ring, displacement sensor bar and cylinder body, wherein said output cable, displacement transducer head are installed in the outside of described cylinder body bottom, and the displacement sensor bar is installed in the inside of described cylinder body bottom; Described magnet ring is installed in the inner end of described plunger; Plunger inside is cavity, and the displacement sensor bar passes magnet ring and extend into the plunger internal cavities.Described plunger inner end is processed into the bench-type cavity, with gland magnet ring, magnet ring seat is fitted in this bench-type cavity.
The present invention is suitable for installing from the two ends of plunger case.
The present invention also provides a kind of built-in plunger-type cylinder of travel test device that can only install from an end, its technological scheme is: comprise output cable, displacement transducer head, plunger, magnet ring, displacement sensor bar and cylinder body, wherein: described output cable, displacement transducer head and displacement sensor bar be installed in respectively outside the outer end of described plunger, within; Plunger inside is cavity, and the end that described magnet ring is installed in connecting tube extend in the plunger cavity; The other end of connecting tube is fixed on cylinder base; The displacement sensor bar passes magnet ring and extend in the connecting tube.
Connecting tube one end has a termination, and magnet ring, magnet ring seat are fitted in the described termination with gland, and the termination extend in the plunger cavity; The other end of connecting tube is fixed on cylinder base by joint.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.
Above-mentioned two kinds of devices, when plunger and cylinder body have relative movement, displacement transducer bar and magnet ring generation relative displacement campaign, the induced signal of generation shows and control by cable output.
The present invention is simple in structure, installs easily, and is little to outside spatial requirement, easy to maintenance, solid and reliable, low cost of manufacture; The pressure that can bear significantly improves, and reaches more than the 30Mpa, and application is extensive, is particularly useful for little, the dark plunger case of cylinder diameter.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described further.
The built-in plunger-type cylinder of travel test device that Fig. 1 installs from two ends
The built-in plunger-type cylinder of travel test device that Fig. 2 installs from an end
Mark among the figure:
1--output cable 2--displacement transducer head 3--plunger 4--gland 5--magnet ring 6--magnet ring seat 7--termination 8--displacement sensor bar 9--connecting tube 10--cylinder body 11--joint
Embodiment
Mode one is existing in conjunction with Fig. 1, embodiment to the built-in plunger-type cylinder of travel test device installed from two ends is described as follows: as shown in the figure, this plunger case comprises output cable 1, displacement transducer head 2, plunger 3, magnet ring 5, displacement sensor bar 8 and cylinder body 10, wherein: output cable 1 and displacement transducer head 2 are installed in outside the bottom of cylinder body 10, and displacement sensor bar 8 is installed within the bottom of cylinder body 10; Plunger 3 inside are cavitys, and displacement sensor bar 8 passes magnet ring 5 and extend into plunger 3 internal cavities.Plunger 3 inner ends are processed into the bench-type cavity, with gland 4 magnet ring 5, magnet ring seat 6 are fitted in this bench-type cavity; 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 plunger 3 motions, the relative displacement campaign takes place with the displacement sensor bar 8 that is installed in cylinder body 10 bottoms in the magnet ring 5 that is installed in plunger 3 ends, and induced signal shows and control by cable 1 output.
Mode two is existing in conjunction with Fig. 2, embodiment to the built-in plunger-type cylinder of travel test device installed from an end is described as follows: as shown in the figure, this plunger case comprises output cable 1, displacement transducer head 2, plunger 3, magnet ring 5, displacement sensor bar 8 and cylinder body 10, wherein: described output cable 1, displacement transducer head 2 are installed in outside the outer end of described plunger 3, and displacement sensor bar 8 is installed within the outer end of described plunger 3; Plunger 3 inside are cavitys, and the end that described magnet ring 5 is installed in connecting tube 9 extend in plunger 3 cavitys; The other end of connecting tube 9 is fixed on cylinder body 10 bottoms; 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 plunger 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 plunger 3 motions, the relative displacement campaign takes place with the displacement sensor bar 8 that is installed in plunger 3 in the magnet ring 5 that is installed in connecting tube 9 ends, and induced signal shows and control by cable 1 output.
As required, described termination 7 and described connecting tube 9 can be processed into an integral body; Perhaps described termination 7, connecting tube 9 and joint 11 also can be processed into an integral body.This plunger case compact structure is little when space outerpace, install from two ends and to be suitable for this plunger case when having difficulties.
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.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.
Applicable scope of the present invention is very wide, and pressure reaches 30-40MPa in the practical application; Can be used for multiple plunger case, be particularly useful for little, the dark plunger case 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 (6)
1. built-in plunger-type cylinder of travel test device, comprise output cable (1), displacement transducer head (2), plunger (3), magnet ring (5), displacement sensor bar (8) and cylinder body (10), it is characterized in that: described output cable (1), displacement transducer head (2) and displacement sensor bar (8) are installed in outside, the inside of described cylinder body (10) bottom respectively; Described magnet ring (5) is installed in described plunger (3) inner end; There is cavity plunger (3) inside, and displacement sensor bar (8) passes magnet ring (5) and extend into plunger (3) internal cavities.
2. a kind of built-in plunger-type cylinder of travel test device according to claim 1 is characterized in that: described plunger (3) inner end is processed into the bench-type cavity, with gland (4) magnet ring (5), magnet ring seat (6) is fitted in this bench-type cavity.
3. built-in plunger-type cylinder of travel test device, comprise output cable (1), displacement transducer head (2), plunger (3), magnet ring (5), displacement sensor bar (8) and cylinder body (10), it is characterized in that: described displacement transducer head (2) and displacement sensor bar (8) be installed in respectively outside the outer end of described plunger (3), within; Plunger (3) inside is cavity, and described magnet ring (5) is installed in connecting tube (9) one ends and extend in plunger rod (3) cavity, and connecting tube (9) the other end is fixed on cylinder body (10) bottom; Displacement sensor bar (8) passes magnet ring (5) and extend in the connecting tube (9).
4. a kind of built-in plunger-type cylinder of travel test device according to claim 3, it is characterized in that: described connecting tube (9) one ends have a termination (7), with gland (4) magnet ring (5), magnet ring seat (6) are fitted in the described termination (7), connecting tube (9) the other end is fixed on cylinder body (10) bottom by joint (11).
5. a kind of built-in plunger-type cylinder of travel test device according to claim 4 is characterized in that: described termination (7) and described connecting tube (9) are an integral body.
6. a kind of built-in plunger-type cylinder of travel test device according to claim 4 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 |
|---|---|---|---|
| CN2009101523848A CN101929485A (en) | 2009-06-24 | 2009-06-24 | Built-in plunger-type cylinder of travel test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101523848A CN101929485A (en) | 2009-06-24 | 2009-06-24 | Built-in plunger-type cylinder of travel test device |
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| Publication Number | Publication Date |
|---|---|
| CN101929485A true CN101929485A (en) | 2010-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101523848A Pending CN101929485A (en) | 2009-06-24 | 2009-06-24 | Built-in plunger-type cylinder of travel test device |
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| Country | Link |
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| CN (1) | CN101929485A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| WO2019033230A1 (en) * | 2017-08-14 | 2019-02-21 | 吉林省云动力智能装备制造有限公司 | Intelligent clamping force adjusting oil cylinder |
| CN110185673A (en) * | 2019-05-09 | 2019-08-30 | 无锡能手工控科技有限公司 | It is a kind of can inductive displacement amount pneumatic straight line mould group |
-
2009
- 2009-06-24 CN CN2009101523848A patent/CN101929485A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| WO2019033230A1 (en) * | 2017-08-14 | 2019-02-21 | 吉林省云动力智能装备制造有限公司 | Intelligent clamping force adjusting oil cylinder |
| CN110185673A (en) * | 2019-05-09 | 2019-08-30 | 无锡能手工控科技有限公司 | It is a kind of can inductive displacement amount pneumatic straight line mould group |
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Application publication date: 20101229 |