CN201297304Y - Plunger oil cylinder of hydraulic hoist with travel detection device placed inside - Google Patents
Plunger oil cylinder of hydraulic hoist with travel detection device placed inside Download PDFInfo
- Publication number
- CN201297304Y CN201297304Y CNU2008201606254U CN200820160625U CN201297304Y CN 201297304 Y CN201297304 Y CN 201297304Y CN U2008201606254 U CNU2008201606254 U CN U2008201606254U CN 200820160625 U CN200820160625 U CN 200820160625U CN 201297304 Y CN201297304 Y CN 201297304Y
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- plunger
- magnet ring
- displacement sensor
- magnetostrictive displacement
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Abstract
The utility model relates to a plunger oil cylinder of a hydraulic hoist with a travel detection device placed inside, The oil cylinder comprises a cylinder body and a plunger, wherein, a set of detection device for a linear displacement sensor is arranged in the cylinder body, and comprises a magnetostriction displacement transducer and a magnet ring. When the oil cylinder is stretched, relative displacement is caused between a probe of the magnetostriction displacement transducer and the magnet ring so as to cause sensor signals to change and detect the travel of the oil cylinder accurately. The oil cylinder has the beneficial effects that the travel detection device of the oil cylinder of the hydraulic hoist is arranged inside the oil cylinder without another housing connected with the oil cylinder, so that the problem of high pressure in the oil cylinder is solved; and only sensor signals are output so that particularly high accuracy can be achieved.
Description
Technical field
The utility model relates to a kind of oil cylinder of hydraulic headstock gear, the built-in device for detecting distance of travel of particularly a kind of stroke detection that is applicable to the plunger hydraulic hoist and synchronization control, can accurately detect the oil cylinder of hydraulic headstock gear of oil cylinder stroke.
Background technique
Hydraulic hoist is widely used in the engineerings such as water conservancy, water power plant, shipping, utilizes the flexible of oil cylinder of hydraulic headstock gear, realizes the open and close of gate.In order to guarantee the steady keying of gate, need accurately to detect the stroke of oil cylinder.The oil cylinder stroke detection device of the hydraulic hoist that uses at present all is mechanical device, and built-in and two kinds of externals are arranged, external because of outside structure is exposed to, significant limitation is arranged.Chinese patent (sealed type hydraulic cylinder travel measuring device ZL00230128) discloses a kind of like this device, include the airtight housing that an end and oil cylinder link, in the shell oil cylinder internal pressure body reel that tool tightens up square is installed, connect firmly and twine rope on the reel, a side of reel links by the input end of its output wheel shaft and photoelectric encoder.The defective of this device is that pressure that housing can bear is below 3MPa, large hydraulic hoist oil cylinder internal pressure reaches more than the 10MPa, this device difficulty bears, and the reel of this device can produce faults such as jumping the position winding when twining rope, rope also can be because of tension force extends greatly, so can not be used for accurately detecting oil cylinder stroke.
The model utility content
In order to overcome the defective that existing plunger hydraulic hoist oil cylinder can not accurately detect stroke, the utility model provides a kind of oil cylinder of hydraulic headstock gear of built-in device for detecting distance of travel, can accurately detect the stroke of stake plunger type hydraulic hoist oil cylinder.
The technological scheme that its technical problem that solves the utility model adopts is: the plunger hydraulic hoist oil cylinder of built-in device for detecting distance of travel comprises cylinder body and plunger, be provided with plunger to small part in the cylinder body, one cover Linear displacement transducer detection device also is set in the cylinder body, this covering device is made up of magnetostrictive displacement sensor and magnet ring, the probe and the magnet ring generation relative displacement of magnetostrictive displacement sensor when oil cylinder is flexible, the generation sensor signal changes, thereby accurately detects the stroke of oil cylinder.
The beneficial effects of the utility model are, the oil cylinder of hydraulic headstock gear device for detecting distance of travel is arranged on oil cylinder inside, and the housing that does not need another one and oil cylinder to link has solved the high problem of oil cylinder internal pressure, and the just sensor signal of output, can reach very high precision.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the embodiment's of an a displacement transducer underneath type of the present utility model structural representation;
Fig. 2 is the embodiment's of an a displacement transducer up-set type of the present utility model structural representation;
Fig. 3 is the embodiment's of another a displacement transducer up-set type of the present utility model structural representation.
Among the figure, 1, cylinder body, 2, plunger, 3, magnetostrictive displacement sensor, 4, magnet ring.
Embodiment
With preferred embodiment the utility model is described in further detail in conjunction with the accompanying drawings now.These accompanying drawings are the schematic representation of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
The hydraulic hoist plunger cylinder of built-in device for detecting distance of travel as shown in Figure 1, magnetostrictive displacement sensor 3 are installed at the bottom of the cylinder body on 1, and magnet ring 4 is installed on the plunger 2, and magnetostrictive displacement sensor probe 3-1 passes magnet ring 4.Specifically: plunger 2 is hollow, be connected with the guide thimble 2-3 of magnetostrictive displacement sensor probe 3-1 between plug 2-1 and the plunger base plate 2-2, there is a pit bottom surface of plunger base plate 2-2, magnet ring seat 2-4 is installed in the pit, magnet ring 4 is installed in the magnet ring seat 2-4, compresses with pressing plate 2-5 above; There is a pit 1-2 bottom surface of the base 1-1 of cylinder body 1, magnetostrictive displacement sensor 3 is installed in this pit 1-2, and with base 1-1 on screw 1-5 scyewed joint, magnetostrictive displacement sensor probe 3-1 passes base 1-1, pressing plate 2-5, magnet ring 4, magnet ring seat 2-4, plunger base plate 2-2, inserts among the guide thimble 2-3; Water proof cover 1-3 is enclosed in magnetostrictive displacement sensor 3 in the base 1-1, and the aperture of the signaling line 3-2 of magnetostrictive displacement sensor 3 on water proof cover 1-3 passes, and passes seamless steel pipe 1-4 and insert the sensor signal receiver.During work, magnetostrictive displacement sensor 3 is linked together with cylinder body 1 and keeps motionless, plunger 2 is flexible, driving guide thimble 2-3 and magnet ring 4 moves up and down, make magnet ring 4 and magnetostrictive displacement sensor probe 3-1 that relative movement take place, the generation sensor signal changes, thereby accurately detects the stroke of oil cylinder.
In Fig. 2, magnetostrictive displacement sensor 3 is installed on the plunger 2, and magnet ring 4 is installed on the cylinder body 1, and magnetostrictive displacement sensor probe 3-1 passes magnet ring 4.Specifically: plunger 2 is hollow, inner wall smooth, the other end that is connected with the guide thimble 2-3 guide thimble 2-3 of magnetostrictive displacement sensor probe 3-1 on the base plate 1-6 of cylinder body 1 is connected with a guide thimble dunnage 1-7, there is a pit bottom surface of guide thimble dunnage 1-7, one through hole is arranged in the pit, magnet ring 4 is installed in the pit, with screw magnet ring 4 is fixed together with guide thimble dunnage 1-7, the inner hole wall 2-6 of guide thimble dunnage 1-7 and plunger 2 is slidingly matched; One through hole 2-9 is arranged on the plug 2-7, and the end of through hole 2-9 is screw 2-8, and magnetostrictive displacement sensor 3 is installed among this screw 2-8, magnetostrictive displacement sensor probe 3-1 passes through hole 2-9, magnet ring 4, the through hole of dunnage 1-7 inserts among the guide thimble 2-3; One blind hole 2-11 is arranged on the plunger skull 2-10, and 2-7 connects with plug, and in magnetostrictive displacement sensor 3 was enclosed in, plunger skull 2-10 goes up also had an aperture to pass for the signaling line 3-2 of magnetostrictive displacement sensor 3.During work, magnet ring 4, guide thimble 2-3, guide thimble dunnage 1-7 and cylinder body 1 are linked together and keep motionless, plunger 2 is flexible, driving magnetostrictive displacement sensor 3 moves up and down, make magnetostrictive displacement sensor probe 3-1 and magnet ring 4 that relative movement take place, produce the sensor signal variation, thereby accurately detect the stroke of oil cylinder; This moment guide thimble dunnage 1-7 with the relative telescopic slide of inner hole wall 2-6 of plunger 2, magnetostrictive displacement sensor probe 3-1 relative fore and aft motion and not breaking away from all the time in guide thimble 2-3.
In Fig. 3, magnetostrictive displacement sensor 3 is installed on the plug 2-7, and magnet ring 4 is installed on the dunnage 1-8 of cylinder body 1, and magnetostrictive displacement sensor probe 3-1 passes magnet ring 4.Specifically: plunger 2 is hollow, inwall is because of undressed and coarse, be connected with the guide thimble 2-3 of magnetostrictive displacement sensor probe 3-1 on the base plate 1-6 of cylinder body 1, the other end of guide thimble 2-3 is connected with a dunnage 1-8, there is a pit bottom surface of dunnage 1-8, and a through hole is arranged in the pit, and magnet ring 4 is installed in the pit, with screw magnet ring 4 is fixed together with dunnage 1-8, the smooth inner bore wall of the guide pipe 2-12 of dunnage 1-8 and plunger 2 is to be slidingly matched; Be connected with a guide thimble dunnage 2-13 on the inner hole wall of plunger 2, on the guide pipe dunnage 2-13 hole arranged, be connected with a guide pipe 2-12 in the hole; One through hole 2-9 is arranged on the plug 2-7, the end of through hole 2-9 is screw 2-8, magnetostrictive displacement sensor 3 is installed among this screw 2-8, and magnetostrictive displacement sensor probe 3-1 passes the through hole of through hole 2-9, magnet ring 4, dunnage 1-8, inserts among the guide thimble 2-3; One blind hole 2-11 is arranged on the plunger skull 2-10, and 2-7 connects with plug, and in magnetostrictive displacement sensor 3 was enclosed in, plunger skull 2-10 goes up also had an aperture to pass for the signaling line 3-2 of magnetostrictive displacement sensor 3.During work, magnet ring 4, dunnage 1-8, guide thimble 2-3 and cylinder body 1 are linked together and keep motionless, plunger 2 is flexible, driving magnetostrictive displacement sensor 3 moves up and down, make magnetostrictive displacement sensor probe 3-1 and magnet ring 4 that relative movement take place, the generation sensor signal changes, thereby accurately detects the stroke of oil cylinder; It is flexible that this moment, plunger 2 drove guide pipe dunnage 2-13, guide pipe 2-12 simultaneously, and dunnage 1-8 telescopic slide relatively in guide pipe 2-12 does not break away from the oil cylinder total travel all the time.
With above-mentioned foundation desirable embodiment of the present utility model is enlightenment, and by above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this model utility technological thought.The technical scope of this model utility is not limited to the content on the specification, must determine its technical scope according to the claim scope.
Claims (8)
1, a kind of hydraulic hoist plunger cylinder of built-in device for detecting distance of travel, comprise cylinder body (1) and plunger (2), be provided with plunger (2) to small part in the cylinder body (1), it is characterized in that: a displacement transducer detection device also is set in the cylinder body (1), and the displacement transducer detection device is made up of magnetostrictive displacement sensor (3) and magnet ring (4).
2, the hydraulic hoist plunger cylinder of built-in device for detecting distance of travel according to claim 1, it is characterized in that: magnetostrictive displacement sensor (3) is installed on the cylinder body (1), magnet ring (4) is installed on the plunger (2), and magnetostrictive displacement sensor probe (3-1) passes magnet ring.
3, the hydraulic hoist plunger cylinder of built-in device for detecting distance of travel according to claim 2, it is characterized in that: be connected with a guide thimble (2-3) between plug (2-1) and the plunger base plate (2-2), there is a pit bottom surface of plunger base plate (2-2), magnet ring seat (2-4) is installed in the pit, magnet ring (4) is installed in the magnet ring seat (2-4), compresses with pressing plate (2-5) above; There is a pit (1-2) bottom surface of the base (1-1) of cylinder body (1), magnetostrictive displacement sensor (3) is installed in this pit (1-2), and with base (1-1) on screw (1-5) scyewed joint, magnetostrictive displacement sensor probe (3-1) passes base (1-1), pressing plate (2-5), magnet ring (4), magnet ring seat (2-4), plunger base plate (2-2) insert in the guide thimble (2-3).
4, the hydraulic hoist plunger cylinder of built-in device for detecting distance of travel according to claim 2, it is characterized in that: the water proof cover (1-3) on the cylinder body (1) is enclosed in magnetostrictive displacement sensor (3) in the base (1-1), and the aperture of the signaling line (3-2) of magnetostrictive displacement sensor (3) on water proof cover (1-3) passes.
5, the hydraulic hoist plunger cylinder of built-in device for detecting distance of travel according to claim 1, it is characterized in that: magnetostrictive displacement sensor (3) is installed on the plunger (2), magnet ring (4) is installed on the cylinder body (1), and magnetostrictive displacement sensor probe (3-1) passes magnet ring (4).
6, the hydraulic hoist plunger cylinder of built-in device for detecting distance of travel according to claim 5, it is characterized in that: be connected with guide thimble (2-3) on the base plate (1-6) of cylinder body (1), the other end of guide thimble (2-3) is connected with guide thimble dunnage (1-7), there is a pit bottom surface of guide thimble dunnage (1-7), one through hole is arranged in the pit, magnet ring (4) is installed in the pit, screw is fixed together magnet ring (4) and guide thimble dunnage (1-7), and guide thimble dunnage (1-7) is slidingly matched with the inner hole wall (2-6) of plunger (2); One through hole (2-9) is arranged on the plug (2-7), through hole (2-9) end is screw (2-8), magnetostrictive displacement sensor (3) is installed in the screw (2-8), magnetostrictive displacement sensor probe (3-1) passes the through hole of through hole (2-9), magnet ring (4), guide thimble dunnage (1-7), inserts guide thimble (2-3).
7, the hydraulic hoist plunger cylinder of built-in device for detecting distance of travel according to claim 5, it is characterized in that: the guide thimble (2-3) that is connected with magnetostrictive displacement sensor probe (3-1) on the base plate (1-6) of cylinder body (1), the other end of guide thimble (2-3) is connected with a dunnage (1-8), there is a pit bottom surface of dunnage (1-8), one through hole is arranged in the pit, magnet ring (4) is installed in the pit, with screw magnet ring (4) and dunnage (1-8) are fixed together, dunnage (1-8) is to be slidingly matched with the smooth inner bore wall of the guide pipe (2-12) of plunger (2); Be connected with a guide thimble dunnage (2-13) on the inner hole wall of plunger (2), on the guide pipe dunnage (2-13) hole arranged, be connected with a guide pipe (2-12) in the hole; One through hole (2-9) is arranged on the plug (2-7), one end of through hole (2-9) is screw (2-8), magnetostrictive displacement sensor (3) is installed in this screw (2-8), magnetostrictive displacement sensor probe (3-1) passes the through hole of through hole (2-9), magnet ring (4), dunnage (1-8), inserts in the guide thimble (2-3).
8, the hydraulic hoist plunger cylinder of built-in device for detecting distance of travel according to claim 5, it is characterized in that: a blind hole (2-11) is arranged on the plunger skull (2-10), (2-7) connects with plug, in magnetostrictive displacement sensor (3) was enclosed in, plunger skull (2-10) is gone up also had an aperture to pass for the signaling line (3-2) of magnetostrictive displacement sensor (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201606254U CN201297304Y (en) | 2008-10-07 | 2008-10-07 | Plunger oil cylinder of hydraulic hoist with travel detection device placed inside |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201606254U CN201297304Y (en) | 2008-10-07 | 2008-10-07 | Plunger oil cylinder of hydraulic hoist with travel detection device placed inside |
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| Publication Number | Publication Date |
|---|---|
| CN201297304Y true CN201297304Y (en) | 2009-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201606254U Expired - Fee Related CN201297304Y (en) | 2008-10-07 | 2008-10-07 | Plunger oil cylinder of hydraulic hoist with travel detection device placed inside |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201297304Y (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011763A (en) * | 2010-06-05 | 2011-04-13 | 常州液压成套设备厂有限公司 | Hydraulic cylinder for driving self-mounting oil production platform to lift |
| CN102107543A (en) * | 2009-12-24 | 2011-06-29 | 兰州兰石重工新技术有限公司 | Stroke detection device for pressing machine |
| CN102513460A (en) * | 2011-12-16 | 2012-06-27 | 大连三高科技发展有限公司 | Steel pipe end sizing mill assembly with diameter expanding function |
| CN102538873A (en) * | 2011-12-30 | 2012-07-04 | 常州海通电气自动化技术装备有限公司 | Fully automatic test line for stroke detecting device |
| 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 |
| CN103591075A (en) * | 2013-11-29 | 2014-02-19 | 徐州重型机械有限公司 | Hydraulic control system synchronous with crane and balancing weight hydraulic cylinder and flow control valve |
| CN103708357A (en) * | 2014-01-03 | 2014-04-09 | 资阳市福兴自动化机械有限公司 | Setting machine of electro-hydraulic servo hydraulic cylinder |
| CN104132022A (en) * | 2014-07-30 | 2014-11-05 | 湖北三江航天万山特种车辆有限公司 | Simple servo oil cylinder |
| CN106015172A (en) * | 2016-07-18 | 2016-10-12 | 天津优瑞纳斯液压机械有限公司 | Lug ring type hydraulic cylinder displacement sensor installation structure |
| CN107298281A (en) * | 2017-07-05 | 2017-10-27 | 宁夏天地奔牛实业集团有限公司 | Displacement transducer protector and the belt self-movable foot end that displacement transducer is set |
| CN108412840A (en) * | 2018-04-28 | 2018-08-17 | 安徽唐兴机械装备有限公司 | A kind of built-in sensors oil cylinder |
| CN108906816A (en) * | 2018-08-09 | 2018-11-30 | 浙江巨化装备制造有限公司 | One kind being used for petrochemical industry reaction kettle automatic flushing device and its cleaning method |
| CN109084672A (en) * | 2018-08-15 | 2018-12-25 | 北京中航惠通自动化技术有限公司 | Magnetostrictive displacement sensor is precisely controlled formula electric pushrod built in a kind of |
| CN112049838A (en) * | 2020-08-19 | 2020-12-08 | 武汉力地液压设备有限公司 | Hydraulic cylinder capable of automatically controlling displacement and hoist |
-
2008
- 2008-10-07 CN CNU2008201606254U patent/CN201297304Y/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102107543A (en) * | 2009-12-24 | 2011-06-29 | 兰州兰石重工新技术有限公司 | Stroke detection device for pressing machine |
| CN102011763A (en) * | 2010-06-05 | 2011-04-13 | 常州液压成套设备厂有限公司 | Hydraulic cylinder for driving self-mounting oil production platform to lift |
| CN102513460A (en) * | 2011-12-16 | 2012-06-27 | 大连三高科技发展有限公司 | Steel pipe end sizing mill assembly with diameter expanding function |
| CN102538873A (en) * | 2011-12-30 | 2012-07-04 | 常州海通电气自动化技术装备有限公司 | Fully automatic test line for stroke detecting device |
| CN102538873B (en) * | 2011-12-30 | 2015-12-16 | 常州海通电气自动化技术装备有限公司 | Device for detecting distance of travel full-automatic testing line |
| 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 |
| CN103591075A (en) * | 2013-11-29 | 2014-02-19 | 徐州重型机械有限公司 | Hydraulic control system synchronous with crane and balancing weight hydraulic cylinder and flow control valve |
| CN103708357A (en) * | 2014-01-03 | 2014-04-09 | 资阳市福兴自动化机械有限公司 | Setting machine of electro-hydraulic servo hydraulic cylinder |
| CN104132022A (en) * | 2014-07-30 | 2014-11-05 | 湖北三江航天万山特种车辆有限公司 | Simple servo oil cylinder |
| CN104132022B (en) * | 2014-07-30 | 2016-08-31 | 湖北三江航天万山特种车辆有限公司 | A kind of simple servo-cylinder |
| CN106015172A (en) * | 2016-07-18 | 2016-10-12 | 天津优瑞纳斯液压机械有限公司 | Lug ring type hydraulic cylinder displacement sensor installation structure |
| CN106015172B (en) * | 2016-07-18 | 2018-03-13 | 天津优瑞纳斯液压机械有限公司 | A kind of clevis mounting cylinder displacement transducer mounting structure |
| CN107298281A (en) * | 2017-07-05 | 2017-10-27 | 宁夏天地奔牛实业集团有限公司 | Displacement transducer protector and the belt self-movable foot end that displacement transducer is set |
| CN108412840A (en) * | 2018-04-28 | 2018-08-17 | 安徽唐兴机械装备有限公司 | A kind of built-in sensors oil cylinder |
| CN108906816A (en) * | 2018-08-09 | 2018-11-30 | 浙江巨化装备制造有限公司 | One kind being used for petrochemical industry reaction kettle automatic flushing device and its cleaning method |
| CN108906816B (en) * | 2018-08-09 | 2023-08-18 | 浙江巨化装备制造有限公司 | Automatic flushing device and method for reaction kettles in petrochemical industry |
| CN109084672A (en) * | 2018-08-15 | 2018-12-25 | 北京中航惠通自动化技术有限公司 | Magnetostrictive displacement sensor is precisely controlled formula electric pushrod built in a kind of |
| CN109084672B (en) * | 2018-08-15 | 2020-07-03 | 北京中航惠通自动化技术有限公司 | Accurate control type electric push rod with built-in magnetostrictive displacement sensor |
| CN112049838A (en) * | 2020-08-19 | 2020-12-08 | 武汉力地液压设备有限公司 | Hydraulic cylinder capable of automatically controlling displacement and hoist |
| CN112049838B (en) * | 2020-08-19 | 2022-07-08 | 武汉力地液压设备有限公司 | Hydraulic cylinder capable of automatically controlling displacement and hoist |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090826 Termination date: 20161007 |