CN109764023A - A kind of dam sluice gate oil cylinder of built-in rotary encoder - Google Patents
A kind of dam sluice gate oil cylinder of built-in rotary encoder Download PDFInfo
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- CN109764023A CN109764023A CN201910184468.3A CN201910184468A CN109764023A CN 109764023 A CN109764023 A CN 109764023A CN 201910184468 A CN201910184468 A CN 201910184468A CN 109764023 A CN109764023 A CN 109764023A
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- oil cylinder
- cylinder bottom
- ball screw
- magnetic
- rotary encoder
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- 238000007789 sealing Methods 0.000 claims abstract description 19
- 210000004907 gland Anatomy 0.000 claims abstract description 18
- 239000000565 sealant Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 63
- 239000012530 fluid Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
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Abstract
The present invention relates to a kind of technical fields of oil cylinder, more specifically, it is related to a kind of dam sluice gate oil cylinder of built-in rotary encoder, its key points of the technical solution are that: including cylinder body, it is slidably connected at the intracorporal piston of oil cylinder and is connected to the oil cylinder bottom of cylinder body one end, the hollow setting of piston, and the open edge of piston is connected with ball screw nut, ball screw is connected in ball screw nut, extend on the outside of oil cylinder bottom ball screw one end, and it is located in oil cylinder bottom and is coaxially connected with bearing in turn with ball screw, bearing lock nut and ball screw sealing gland, one end that ball screw is located at outside oil cylinder bottom is fixedly and coaxially connected the magnetic grid ring of magnetic-grid-type rotary encoder, and the end face at oil cylinder bottom is fixedly connected with the magnetic grid head and oil cylinder bottom earring seats of magnetic-grid-type rotary encoder, and on the end face of oil cylinder bottom earring seats It is fixedly connected with encoder sealing gland.The present invention has the advantages that oil cylinder stroke sensing, detachable and good airproof performance.
Description
Technical field
The present invention relates to a kind of technical fields of oil cylinder, more specifically, it relates to a kind of water of built-in rotary encoder
Dam gate oil cylinder.
Background technique
The promotion or overturning of dam sluice gate at present is all made of hydraulic cylinder and is promoted or overturn, in order to accurately control gate
Hoisting depth or flip angle are general by the way of installing stroke sensor inside oil cylinder.
This mode in stroke sensor built in oil cylinder is suitble to stroke sensor work in this big humidity, solarization, rain
In the environment for the various unfavorable factors that sundries impacts in leaching, high temperature, low temperature, water impact and water, currently, generally using magnetic grid
Displacement sensor, bracing wire rotary encoder or the magnetostrictive displacement sensor of formula are built in the inside of oil cylinder.
Above-mentioned technical proposal existing defects: the displacement sensor of grating since high oil pressure cannot be born, even with
It is special every press mechanism, but there will necessarily be the aerial respiration effect external every press mechanism, it is therefore desirable to improve.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of dam lock of built-in rotary encoder
Door oil cylinder has the advantages that oil cylinder stroke sensing, detachable and good airproof performance.
Above-mentioned technical purpose of the invention has the technical scheme that a kind of built-in rotary encoder
Dam sluice gate oil cylinder including cylinder body, is slidably connected at the intracorporal piston of oil cylinder and is fixedly connected on the oil of cylinder body one end
Cylinder bottom, the hollow setting of piston, and the open edge of the piston is fixedly connected with ball screw nut, the ball screw
Ball screw is connected in nut, described ball screw one end is extended on the outside of oil cylinder bottom, and is located in the oil cylinder bottom
Coaxially it is connected with bearing, bearing lock nut and ball screw sealing gland in turn with ball screw, ball screw is located at oil
One end outside cylinder bottom is fixedly and coaxially connected the magnetic grid ring of magnetic-grid-type rotary encoder, and the end face at the oil cylinder bottom is fixedly connected
There are the magnetic grid head and oil cylinder bottom earring seats of magnetic-grid-type rotary encoder, and is fixedly connected on the end face of oil cylinder bottom earring seats
There is encoder sealing gland.
By using above-mentioned technical proposal, the linear motion that piston is stretched out or retracted can drive ball screw to rotate, by
It is fixedly and coaxially connected in the magnetic grid ring of magnetic-grid-type rotary encoder with ball screw, at this point, the magnetic grid of magnetic-grid-type rotary encoder
Ring can follow screw rod to make rotating motion, so that the signal of rotation passed to the magnetic grid head of magnetic-grid-type rotary encoder, then by certainly
The cable transfer of body realizes the sensing of oil cylinder stroke, and oil cylinder bottom and oil cylinder bottom earring seats in external corresponding electronic equipment
Between form cavity, mutually isolated inside cavity and oil cylinder, when dismantling encoder sealing cover, in-oil cylinder hydraulic oil will not be sent out
Raw leakage, it is convenient for assembly.
The present invention is further arranged to: the magnetic grid ring of the magnetic-grid-type rotary encoder is coaxially set with encoder sealing gland
It sets.
By using above-mentioned technical proposal, encoder sealing gland for magnetic-grid-type rotary encoder magnetic grid ring itself
Cable is connect with external electronic device, and encoder sealing gland seals, and prevents external water or air or other sundries
Into in the cavity between oil cylinder bottom and oil cylinder bottom earring seats.
The present invention is further arranged to: oil cylinder bottom earring seats are bolted to connection with oil cylinder bottom, and oil cylinder bottom
Corresponding sealant is provided between earring seats and the contact surface at oil cylinder bottom.
By using above-mentioned technical proposal, there can be better seal effect.
In conclusion the invention has the following advantages:
First, the sensing of oil cylinder stroke can monitor for delivery in external electronic device for staff；
Second, encoder carries out dismounting and change with can be convenient；
Third, good airproof performance, will not occur hydraulic fluid leak in assembly.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of oil cylinder in the present embodiment.
In figure: 1, cylinder body；2, oil cylinder bottom；3, oil cylinder bottom earring seats；4, encoder sealing gland；5, magnetic-grid-type rotation is compiled
The magnetic grid head of code device；6, the magnetic grid ring of magnetic-grid-type rotary encoder；7, ball screw sealing gland；8, bearing lock nut；9,
Bearing；10, ball screw；11, ball screw nut；12, piston；13, oil cylinder rodless cavity hydraulic fluid port；14, oil cylinder rodless cavity；15,
Cylinder rod chamber；16, cylinder rod chamber hydraulic fluid port.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention will be described in detail.
As shown in Figure 1, a kind of dam sluice gate oil cylinder of built-in rotary encoder, including cylinder body 1, it is slidably connected at oil cylinder
Piston 12 in body 1 and the oil cylinder bottom 2 for being fixedly connected on 1 one end of cylinder body, the hollow setting of piston 12, and the opening of piston 12
Edge is fixedly connected with ball screw nut 11, and ball screw 10, ball screw 10 are connected in ball screw nut 11
2 outside of oil cylinder bottom is extended in one end, and is located in oil cylinder bottom 2 and is coaxially connected with bearing 9, bearing locking in turn with ball screw 10
Nut 8 and ball screw sealing gland 7, one end that ball-screw 10 is located at outside oil cylinder bottom 2 have been fixedly and coaxially connected magnetic-grid-type
The magnetic grid ring 6 of rotary encoder, and the end face at oil cylinder bottom 2 is fixedly connected with the magnetic grid head 5 and oil of magnetic-grid-type rotary encoder
Cylinder bottom earring seats 3, and encoder sealing gland 4 is fixedly connected on the end face of oil cylinder bottom earring seats 3.
Specifically, the inner cavity of cylinder body 1 is separated into cylinder rod chamber 15 and oil cylinder rodless cavity 14, cylinder body 1 by piston 12
Surface offer the cylinder rod chamber hydraulic fluid port 16 of connection cylinder rod chamber 15 and the oil cylinder rodless cavity that is connected to oil cylinder rodless cavity 14
Hydraulic fluid port 13, the magnetic grid head 5 of magnetic-grid-type rotary encoder and the magnetic grid ring 6 of magnetic-grid-type rotary encoder are non-contactly close at one
In specified range.
The magnetic grid ring 6 and encoder sealing gland 4 of magnetic-grid-type rotary encoder are coaxially disposed, oil cylinder bottom earring seats 3 and oil
Cylinder bottom 2 is bolted to connection, and is provided with corresponding sealant between oil cylinder bottom earring seats 3 and the contact surface at oil cylinder bottom 2.
The implementation principle of the present embodiment are as follows: outer liquid pressure oil, by the into and out oil cylinder of oil cylinder rodless cavity hydraulic fluid port 13 without
Rod cavity 14, while cylinder rod chamber 15 is flowed out or entered by cylinder rod chamber 16, it will lead to the stretching or retraction of piston 12.By
It is fixed in the lead of ball screw 10, therefore when the stretching of 12 straight line of piston or retraction a certain distance, passes through ball screw
Ball screw 10 is rotated corresponding angle by nut 11.The rotation of ball screw 10 drives the magnetic grid of magnetic-grid-type rotary encoder again
Ring 6 rotates, the variation of magnetic grid caused by the rotation of the magnetic grid ring 6 of magnetic-grid-type rotary encoder, by magnetic-grid-type rotary encoder
Magnetic grid head 5 read, and by the cable transfer of itself into external corresponding electronic equipment.To realize the biography of oil cylinder stroke
Sense.
When needing replacing stroke sensor, since corresponding component of machine does not need to replace, it is only necessary to replace magnetic grid
The magnetic grid head 5 of formula rotary encoder.Because of cavity and 14 phase of oil cylinder rodless cavity between oil cylinder bottom earring seats and oil cylinder bottom
Mutually isolation, so the hydraulic oil in oil cylinder rodless cavity 14 will not occur to external leakage, institute when dismantling encoder sealing gland 4
It will not be changed accordingly with the position of piston 12.Again due to the center line of the position oil cylinder bottom earring seats 3 of encoder sealing gland 4
It is not overlapped, therefore can accomplish dismantling or installing encoder sealing gland 4, further replace or install magnetic-grid-type rotation and compile
When the magnetic grid head 5 of code device, the external oil cylinder pin shaft being mounted on oil cylinder bottom earring seats 3 does not have to disassembly, and which achieves oil cylinders
Without disassembly.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (3)
1. a kind of dam sluice gate oil cylinder of built-in rotary encoder, including cylinder body, be slidably connected at the intracorporal piston of oil cylinder with
And it is fixedly connected on the oil cylinder bottom of cylinder body one end, it is characterised in that: the hollow setting of piston, and the opening edge of the piston
Edge is fixedly connected with ball screw nut, and ball screw, the ball screw one are connected in the ball screw nut
End is extended on the outside of oil cylinder bottom, and is located in the oil cylinder bottom and is coaxially connected with bearing, bearing locking spiral shell in turn with ball screw
Female and ball screw sealing gland, one end that ball screw is located at outside oil cylinder bottom have been fixedly and coaxially connected magnetic-grid-type rotary coding
The magnetic grid ring of device, and the end face at the oil cylinder bottom is fixedly connected with the magnetic grid head and oil cylinder bottom earrings of magnetic-grid-type rotary encoder
Seat, and encoder sealing gland is fixedly connected on the end face of oil cylinder bottom earring seats.
2. a kind of dam sluice gate oil cylinder of built-in rotary encoder according to claim 1, it is characterised in that: the magnetic grid
The magnetic grid ring and encoder sealing gland of formula rotary encoder are coaxially disposed.
3. a kind of dam sluice gate oil cylinder of built-in rotary encoder according to claim 1, it is characterised in that: the oil cylinder
Bottom earring seats are bolted to connection with oil cylinder bottom, and are provided between oil cylinder bottom earring seats and the contact surface at oil cylinder bottom corresponding
Sealant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910184468.3A CN109764023A (en) | 2019-03-12 | 2019-03-12 | A kind of dam sluice gate oil cylinder of built-in rotary encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910184468.3A CN109764023A (en) | 2019-03-12 | 2019-03-12 | A kind of dam sluice gate oil cylinder of built-in rotary encoder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109764023A true CN109764023A (en) | 2019-05-17 |
Family
ID=66458822
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910184468.3A Pending CN109764023A (en) | 2019-03-12 | 2019-03-12 | A kind of dam sluice gate oil cylinder of built-in rotary encoder |
Country Status (1)
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| CN (1) | CN109764023A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110939111A (en) * | 2019-12-18 | 2020-03-31 | 国电大渡河检修安装有限公司 | Dam gate opening and closing control method |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3123572A1 (en) * | 1981-06-13 | 1982-12-30 | H. Kuhnke Gmbh Kg, 2427 Malente | Measurement system for contactless detection of positions of piston rods |
| JPH076712U (en) * | 1993-06-28 | 1995-01-31 | 荒木技研工業株式会社 | Position detection mechanism for reciprocating moving body |
| CN101922484A (en) * | 2010-08-23 | 2010-12-22 | 韶关市伟光液压油缸有限公司 | Digital telescopic oil cylinder with servo rotary valve |
| CN201973002U (en) * | 2011-04-15 | 2011-09-14 | 厦门大学 | Hydraulic cylinder with piston motion position capable of being measured |
| CN202732551U (en) * | 2012-07-12 | 2013-02-13 | 东北大学 | Electro-hydraulic stepping cylinder |
| KR20150134146A (en) * | 2014-05-21 | 2015-12-01 | 노우철 | device for Stroke Measurement of Hydraulic Cylinder |
| CN205449020U (en) * | 2015-12-30 | 2016-08-10 | 中山市德工机械科技有限公司 | Path measurement device is penetrated to pressure |
| CN206878655U (en) * | 2017-06-26 | 2018-01-12 | 舜华电气（昆山）有限公司 | A kind of motor rotary encoder mounting structure |
| CN108361241A (en) * | 2018-05-16 | 2018-08-03 | 佛山研强自动化科技有限公司 | Internally-arranged type piston displacement detection device |
| CN209838824U (en) * | 2019-03-12 | 2019-12-24 | 韶关市伟光液压油缸有限公司 | Dam gate oil cylinder with built-in rotary encoder |
-
2019
- 2019-03-12 CN CN201910184468.3A patent/CN109764023A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3123572A1 (en) * | 1981-06-13 | 1982-12-30 | H. Kuhnke Gmbh Kg, 2427 Malente | Measurement system for contactless detection of positions of piston rods |
| JPH076712U (en) * | 1993-06-28 | 1995-01-31 | 荒木技研工業株式会社 | Position detection mechanism for reciprocating moving body |
| CN101922484A (en) * | 2010-08-23 | 2010-12-22 | 韶关市伟光液压油缸有限公司 | Digital telescopic oil cylinder with servo rotary valve |
| CN201973002U (en) * | 2011-04-15 | 2011-09-14 | 厦门大学 | Hydraulic cylinder with piston motion position capable of being measured |
| CN202732551U (en) * | 2012-07-12 | 2013-02-13 | 东北大学 | Electro-hydraulic stepping cylinder |
| KR20150134146A (en) * | 2014-05-21 | 2015-12-01 | 노우철 | device for Stroke Measurement of Hydraulic Cylinder |
| CN205449020U (en) * | 2015-12-30 | 2016-08-10 | 中山市德工机械科技有限公司 | Path measurement device is penetrated to pressure |
| CN206878655U (en) * | 2017-06-26 | 2018-01-12 | 舜华电气（昆山）有限公司 | A kind of motor rotary encoder mounting structure |
| CN108361241A (en) * | 2018-05-16 | 2018-08-03 | 佛山研强自动化科技有限公司 | Internally-arranged type piston displacement detection device |
| CN209838824U (en) * | 2019-03-12 | 2019-12-24 | 韶关市伟光液压油缸有限公司 | Dam gate oil cylinder with built-in rotary encoder |
Non-Patent Citations (1)
| Title |
|---|
| 刘忠等: "机电液集成控制的数字液压缸研究", 制造技术与机床, no. 11, 2 November 2009 (2009-11-02), pages 51 - 54 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110939111A (en) * | 2019-12-18 | 2020-03-31 | 国电大渡河检修安装有限公司 | Dam gate opening and closing control method |
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