CN103423535B - A kind of center pivot sprinkling machine center pivot sealing device - Google Patents
A kind of center pivot sprinkling machine center pivot sealing device Download PDFInfo
- Publication number
- CN103423535B CN103423535B CN201310363974.1A CN201310363974A CN103423535B CN 103423535 B CN103423535 B CN 103423535B CN 201310363974 A CN201310363974 A CN 201310363974A CN 103423535 B CN103423535 B CN 103423535B
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- Prior art keywords
- sealing
- spheric seating
- pipe
- center pivot
- water inlet
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/02—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction
- F16L27/04—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction with partly spherical engaging surfaces
- F16L27/06—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction with partly spherical engaging surfaces with special sealing means between the engaging surfaces
- F16L27/073—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction with partly spherical engaging surfaces with special sealing means between the engaging surfaces one of the cooperating surfaces forming the sealing means
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/09—Watering arrangements making use of movable installations on wheels or the like
- A01G25/092—Watering arrangements making use of movable installations on wheels or the like movable around a pivot centre
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/02—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction
- F16L27/04—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction with partly spherical engaging surfaces
- F16L27/053—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction with partly spherical engaging surfaces held in place by bolts passing through flanges
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
Abstract
The invention provides a kind of center pivot sprinkling machine center pivot sealing device, including the center pivot being made up of fixed water inlet pipe and rotation water-supply-pipe, it is provided with rotary spherical black box between described fixed water inlet pipe and rotation water-supply-pipe, this black box includes suitable spheric seating and spherical surface body, described spheric seating offers, with the center of spherical surface body, the limbers being connected, the inner side of spheric seating is provided with the first seal groove of annular, is provided with lower peripheral surface sealing ring in the first seal groove；Described spheric seating bottom is fixing with fixed water inlet pipe to be connected, and described spherical surface body top is fixing with rotation water-supply-pipe to be connected.The present invention realizes sealing by the ball type of contact surface that between spheric seating and spherical surface body, mutually extruding is formed, good seal performance；And rotary spherical black box freedom of motion of the present invention is good, it is possible to eliminate the deflection motions and additional load rotated between water-supply-pipe and fixed water inlet pipe, it is to avoid the phenomenon that ring wear amount is uneven, improve the service life of sealing device.
Description
Technical field
The invention belongs to sprinkler irrigation technique field, relate to a kind of center pivot sprinkling machine center pivot sealing device.
Background technology
In water saving irrigation technology, sprinkler irrigation technique is that a kind of advanced technology, stable performance, water-saving result be excellent, the significant water-saving irrigation technique of economic results in society.Center pivot sprinkling machine because of have unit irrigated area big, to crop and landform strong adaptability, land utilization ratio is high, rainfall distribution uniformity is high, mechanization and automaticity is high and the multiple advantage such as efficient energy-saving is widelyd popularize, and achieves good water-saving result and economic results in society in agricultural water-saving irrigation.
When spraying operation, whole truss and the cantilever part of center pivot sprinkling machine rotate around center pivot under the driving of span tower carriage, the fixed water inlet pipe requiring center pivot maintains static, rotate water-supply-pipe rotates in company with truss, sprinkling irrigation water is under water pump effect, through each shower nozzle that fixed water inlet pipe and rotation water-supply-pipe are transported on truss.Structurally occur as soon as rotation water-supply-pipe and to make 360 degree of continuous rotary motions with fixed water inlet pipe for rotating shaft, this just requires to retain certain free gap between rotation water-supply-pipe and fixed water inlet pipe, if it is unreasonable to rotate the design of Sealing Structure at water-supply-pipe and fixed water inlet pipe link position, a large amount of drainage will occur, the serious water-saving result reducing irrigation sprinkler.
Chinese utility model patent 201220173311.4 discloses the sealing structure of a kind of large-scale circular irrigation sprinkler centre frame outlet pipe, including the fixed water inlet pipe mutually connected together and rotation water-supply-pipe, the contact surface of belled position fixed water inlet pipe or rotation water-supply-pipe arranges 1 ~ 3 cannelure, in each cannelure, assembles a Y type rubber seal.
Chinese utility model patent 201120025484.7 discloses a kind of water sealing device for pointer-type irrigation sprinkler center pivot position, including upper feed pipe and lower feed pipe, equipped with upper feed pipe liner between described upper feed pipe and lower feed pipe, upper feed pipe welds on the same axis with upper feed pipe liner, upper feed pipe liner outer wall and lower feed pipe inwall matched in clearance, described lower feed pipe inwall is provided with in seal groove and lip-type seal ring recess, seal groove and lip-type seal ring recess and is respectively provided with O RunddichtringO and lip-shaped sealed ring.
Chinese utility model patent 201120293780.5 discloses a kind of central vertical pipe water sealing structure of circular sprinkler, including rotating upper elbow, central vertical pipe and rotating lower elbow, the fixed installation of central vertical pipe upper end rotates upper elbow, the fixed installation of central vertical pipe lower end rotates lower elbow, its innovative point is: be shaped with annular protrusion in the upper end of central vertical pipe, O-ring seal is installed in this annular protrusion, seals with central vertical pipe in elbow bottom is inserted into central vertical pipe in rotation and by this O-ring seal.
Above-mentioned patent all can realize the sealing of center pivot sprinkling machine center pivot, but above-mentioned patent is all confined to use the rubber mass sealing rings such as O type, Y type, lip-shaped sealed ring, reduces the sealing problem that leaks when the radial seal technology of radial clearance solves both relative rotary motion between rotation water-supply-pipe and center fixed water inlet pipe the most to greatest extent.The deficiency that existing Sealing Technology exists shows the following aspects: 1) for ensureing fixed water inlet pipe and the rotary motion rotated between water-supply-pipe, must leave minimum rotary gap between the two, the existence of this gap becomes the maximum hidden danger leaked；2) being quality of rubber materials manufacture because of O type, Y type, lip-shaped sealed ring, when irrigation sprinkler rotation water-supply-pipe is relatively fixed water inlet pipe 360 degree of rotary motions of work, the ring wear speed in above-mentioned patented technology is all very fast, along with the abrasion water leakage of sealing ring increases rapidly；3) irrigation sprinkler rotates water-supply-pipe when making 360 degree of rotary motions around fixed water inlet pipe, because being affected by ground flat degree, rotation water-supply-pipe is relatively fixed water inlet pipe and can produce deflection oscillating motion, causing the O type in above-mentioned patented technology, Y type, lip-shaped sealed ring different in the frictional force of each radial position, wear extent is uneven；4) in above-mentioned patented technology, sealing ring is mounted on rotating in the radial clearance between water-supply-pipe and fixed water inlet pipe, wearing clearance can not be automatically compensated after ring wear, cause leaking the most seriously, during repair and replacement, only mutually dismantle with fixed water inlet pipe and to separate rotating water-supply-pipe and could change, and repair and replacement need the main equipments such as crane, change labor intensity big.
Summary of the invention
Present invention aims to the problem that prior art exists, it is provided that the center pivot sprinkling machine center pivot sealing device of a kind of good sealing effect and length in service life.
To this end, the present invention adopts the following technical scheme that
A kind of center pivot sprinkling machine center pivot sealing device, including the center pivot being made up of fixed water inlet pipe and rotation water-supply-pipe, it is provided with rotary spherical black box between described fixed water inlet pipe and rotation water-supply-pipe, described rotary spherical black box includes suitable spheric seating and spherical surface body, described spheric seating offers, with the center of spherical surface body, the limbers being connected, the inner side of described spheric seating is provided with the first seal groove of annular, lower peripheral surface sealing ring is installed in described first seal groove, and described lower peripheral surface sealing ring is arcwall face relative to the side of spherical surface body；Described spheric seating bottom is fixing with fixed water inlet pipe to be connected, and described spherical surface body top is fixing with rotation water-supply-pipe to be connected.Wherein, the purpose of design of lower peripheral surface sealing ring arcwall face is to make lower peripheral surface sealing ring lateral surface suitable with the spherical of spherical surface body, reduces the friction between lower peripheral surface sealing ring and spherical surface body.
Further, described spheric seating top is provided with spheric seating upper flange, the sealing gland being arranged over annular of described spheric seating upper flange；The medial surface of described sealing gland is provided with the second seal groove of annular, is provided with ball face sealing circle, and described upper ball face sealing circle is arcwall face relative to the side of spherical surface body in described second seal groove；It is bolted to connection between described spheric seating upper flange and sealing gland.The design principle of upper ball face sealing circle arcwall face is with lower peripheral surface sealing ring.
Further, being provided with sealing and adjust packing ring between described spheric seating upper flange and sealing gland, described spheric seating upper flange, sealing gland and sealing adjust and are bolted to connection between packing ring.Because there is certain interval bottom upper ball face sealing circle and between spheric seating upper flange, during use, the sealing that can be equipped with different-thickness adjusts packing ring, after there is abrasion in the arc surface of upper ball face sealing circle, the position of upper ball face sealing circle can be made to move down by the sealing adjustment packing ring changing thickness less, and then reduce inside upper ball face sealing circle the gap between arcwall face and spherical surface body spherical outside surface, reach the automatic compensation of ball face sealing circle wearing clearance.And, replacing relative to upper ball face sealing circle, change sealing adjustment packing ring the simplest, as long as the sealing preparing different-thickness in advance adjusts packing ring, size according to upper ball face sealing circle wear extent is changed sealing at any time and is adjusted packing ring, can play and extended upper ball face sealing circle service life and reduced the purpose of maintenance replacing construction.
Further, the inwall of described second seal groove has the inclined plane at one 45 degree of angles.The upper ball face sealing circle when sealing that beneficially replacing thickness is less adjusts packing ring that is designed with of inclined plane moves and backlash compensation obliquely, because inclined plane has, to upper ball face sealing circle, the effect extruded obliquely, is conducive to upper ball face sealing circle to spherical surface body laminating.
Further, described spheric seating top end opening is in same plane with the centre of sphere of spherical surface body.
Further, the centre of sphere of the described spheric seating top end opening place a little higher than spherical surface body of plane.So, on the one hand the degree of freedom that spherical surface body moves upward can be limited；On the other hand be conducive to upper ball face sealing to iris out the backward lower motion compensation wearing clearance of existing abrasion because upper ball face sealing circle during moving downward upper ball face sealing circle increasing with the diameter of spherical surface body contact surface, thus relative gap is more and more less.
Further, being provided with expansion joint between described fixed water inlet pipe and spheric seating, the upper end of described expansion joint is fixing with the bottom of spheric seating to be connected, and the lower end of expansion joint is fixing with the upper end of fixed water inlet pipe to be connected.
The present invention realizes sealing by the ball type of contact surface that between spheric seating and spherical surface body, mutually extruding is formed, compared to the cylindrical contact face between conventional fixed water inlet pipe and rotation water-supply-pipe, under gravity, the ball type of contact surface gap that extruding is formed is minimum, the problem that can effectively solve to leak because of contact surface gap.It addition, for reaching watertight satisfactory sealing performance, sealing device of the present invention devises triple-leakproof and seals structure: lower peripheral surface seals and encloses the effect that first seals, and seals and enters spheric seating and the water of spherical surface body limbers through water pump conveying from fixed water inlet pipe；Adjust sealing gasket and enclose the effect that second seals, be sealed in after leaking at lower peripheral surface sealing ring from leaking of oozing out between spherical surface body and spheric seating contact surface；Upper ball face sealing encloses the effect of three seals, and what sealing was oozed out from gap between sealing gland and spherical surface body leaks, and, upper ball face sealing circle may also function as the effect that second seals to a certain extent.
The beneficial effects of the present invention is: 1) present invention realizes sealing by the ball type of contact surface that between spheric seating and spherical surface body, mutually extruding is formed, good seal performance；2) rotary spherical black box of the present invention uses the spherical structure with universal property, freedom of motion is good, the deflection motions rotated between water-supply-pipe and fixed water inlet pipe and corresponding additional load produced because of ground flat degree difference can be eliminated, avoid frictional force at each radial position of black box and differ the phenomenon uneven with ring wear amount, improve the service life of sealing device；3) by changing more easily detachable sealing adjustment packing ring, the automatic compensation of ball face sealing circle wearing clearance can be realized；4) can be by fixed water inlet pipe under the flexible elimination Various Seasonal of expansion joint and the expansion or shrinkage amount rotating water-supply-pipe, eliminate fixed water inlet pipe and rotate water-supply-pipe because of the additional load that sealing device is caused that expands with heat and contract with cold, reduce stress and the abrasion of sealing device, improve the service life of sealing device, thus eliminate seal failure to greatest extent and leak.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of rotary spherical black box of the present invention；
Fig. 3 is the structural representation of spheric seating of the present invention；
Fig. 4 is the A portion partial enlarged drawing of Fig. 3；
Fig. 5 is the structural representation of spherical surface body of the present invention；
Fig. 6 is the structural representation of lower peripheral surface sealing ring of the present invention；
Fig. 7 is the structural representation of sealing gland of the present invention；
Fig. 8 is the structural representation of ball face sealing circle in the present invention；
Fig. 9 is ball face sealing circle and the assembling schematic diagram of sealing gland in the present invention；
Figure 10 is the structural representation of expansion joint of the present invention；
Figure 11 is the structural representation of fixed water inlet pipe of the present invention；
Figure 12 is the structural representation that the present invention rotates water-supply-pipe.
In figure, 1-center pylon, 2-fixed water inlet pipe, 3-rotates water-supply-pipe, 4-bearing block, 5-rotary spherical black box, 6-expansion joint, 7-spheric seating, 8-spherical surface body, 9-limbers, 10-limbers, 11-the first seal groove, 12-lower peripheral surface sealing ring, 1201-arc surface, 13-spheric seating upper flange, 14-sealing gland, 15-seals and adjusts packing ring, 16-the second seal groove, 1601-inclined plane, 17-upper ball face sealing circle, 1701-arc surface, 18-spheric seating lower flange, 19-spherical surface body upper flange, 20-expansion joint lower flange, 21-expansion joint upper flange, 22-fixed water inlet pipe flange, 23-rotates water-supply-pipe flange.
Detailed description of the invention
As shown in figs. 1-12, a kind of center pivot sprinkling machine center pivot sealing device, including the center pivot being made up of fixed water inlet pipe 2 and rotation water-supply-pipe 3, fixed water inlet pipe 2 is fixing with the center pylon 1 of center pivot sprinkling machine to be connected, and rotates water-supply-pipe 3 and is connected with center pylon 1 by bearing block 4；It is provided with rotary spherical black box 5 between fixed water inlet pipe 2 and rotation water-supply-pipe 3, rotary spherical black box 5 includes suitable spheric seating 7 and spherical surface body 8, the center of spheric seating 7 and spherical surface body 8 offers limbers 9 and limbers 10 respectively, and limbers 9 and limbers 10 are interconnected, the medial wall of spheric seating 7 is provided with the first seal groove 11 of annular, lower peripheral surface sealing ring 12 is installed in first seal groove 11, and the side of the relative spherical surface body 8 of lower peripheral surface sealing ring 12 is arcwall face 1201；Spheric seating 7 top is provided with spheric seating upper flange 13, the sealing gland 14 being also arranged above annular of spheric seating upper flange 13, being provided with sealing between spheric seating upper flange 13 and sealing gland 14 and adjust packing ring 15, spheric seating upper flange 13, sealing gland 14 and sealing adjust and are bolted to connection between packing ring 15；The medial surface of sealing gland 14 is provided with the second seal groove 16 of annular, and second the inwall of seal groove 16 there is an inclined plane 1601 in 45 degree of overturning angles, being provided with ball face sealing circle 17 in second seal groove 16, the side of the upper relative spherical surface body 8 of ball face sealing circle 17 is arcwall face 1701；And the centre of sphere of the spheric seating 7 top end opening place a little higher than spherical surface body of plane 8, this point be can be seen that by Fig. 2 and 4, Fig. 2 is labeled with two horizontal center lines, wherein, a upper instruction spheric seating 7 top end opening place plane, the horizontal center line of relatively next root instruction spherical surface body 8 that is spherical surface body 8 centre of sphere place horizontal plane；Fig. 4 preferably illustrates the structure at spheric seating 7 top end opening, and the circular dashed line in Fig. 3 and 4 represents the installation site of spherical surface body 8；
Expansion joint 6 it is additionally provided with between fixed water inlet pipe 2 and spheric seating 7, the upper end of expansion joint 6 is provided with expansion joint upper flange 21, lower end is provided with expansion joint lower flange 20, the bottom of spheric seating 7 is provided with spheric seating lower flange 18, the top of spherical surface body 8 is provided with spherical surface body upper flange 19, the upper end of fixed water inlet pipe 2 is provided with fixed water inlet pipe flange 22, and the lower end rotating water-supply-pipe 3 is provided with rotation water-supply-pipe flange 23；The upper end of expansion joint 6 is connected by expansion joint upper flange 21, spheric seating lower flange 18 and bolt are fixing with the bottom of spheric seating 7, and the lower end of expansion joint 6 is connected by expansion joint lower flange 20, fixed water inlet pipe flange 22 and bolt are fixing with the upper end of fixed water inlet pipe 2；Water-supply-pipe flange 23, spherical surface body upper flange 19 and bolt are fixing with spherical surface body 8 to be connected by rotating to rotate water-supply-pipe 3.Further, for making sealing gland 14 to install smoothly, the external diameter of spherical surface body upper flange 19 and rotation water-supply-pipe flange 23 should be less than the internal diameter of sealing gland 14.
For extending service life and the maintenance replacement cycle of sealing device, reduce water leakage, spheric seating 7, surface hard chrome plating after accurate grinding is processed of spherical surface body 8, to improve case hardness and to carry out wearability process, reach to coordinate the purpose not leaked accurate, wear-resisting, corrosion-resistant.
During use, fixed water inlet pipe 2, expansion joint 6 and spheric seating 7 all maintain static, and rotate water-supply-pipe 3 and drive spherical surface body 8 to rotate.Under water pump effect, irrigation water arrives be located at the shower nozzle on center pivot sprinkling machine truss through fixed water inlet pipe 2, expansion joint 6, limbers 9, limbers 10, rotation water-supply-pipe 3, it is achieved sprinkling irrigation.In the process, sealed by the ball type of contact surface optimized integration with minim gap that between spheric seating 7 and spherical surface body 8, mutually extruding is formed, lower peripheral surface sealing ring 12, upper ball face sealing circle 17 and sealing adjust the effect that packing ring 15 simultaneously works as sealing further, at utmost prevent from leaking.And when upper ball face sealing circle 17 weares and teares and forms gap between spherical surface body 8, the less sealing of thickness can be changed according to wear extent and adjust packing ring 15, it is achieved the automatic compensation of upper ball face sealing circle 17 wearing clearance.
Claims (3)
1. a center pivot sprinkling machine center pivot sealing device, including the center pivot being made up of fixed water inlet pipe and rotation water-supply-pipe, it is provided with rotary spherical black box between described fixed water inlet pipe and rotation water-supply-pipe, described rotary spherical black box includes suitable spheric seating and spherical surface body, described spheric seating offers, with the center of spherical surface body, the limbers being connected, described spheric seating bottom is fixing with fixed water inlet pipe to be connected, and described spherical surface body top is fixing with rotation water-supply-pipe to be connected；Described spheric seating top is provided with spheric seating upper flange, the sealing gland being arranged over annular of described spheric seating upper flange, it is characterized in that, the inner side of described spheric seating is provided with the first seal groove of annular, lower peripheral surface sealing ring is installed in described first seal groove, and described lower peripheral surface sealing ring is arcwall face relative to the side of spherical surface body；The medial surface of described sealing gland is provided with the second seal groove of annular, is provided with ball face sealing circle, and described upper ball face sealing circle is arcwall face relative to the side of spherical surface body in described second seal groove；Being provided with sealing between described spheric seating upper flange and sealing gland and adjust packing ring, described spheric seating upper flange, sealing gland and sealing adjust and are bolted to connection between packing ring；The centre of sphere of the described spheric seating top end opening place a little higher than spherical surface body of plane.
A kind of center pivot sprinkling machine center pivot sealing device the most according to claim 1, it is characterised in that the inwall of described second seal groove has the inclined plane at one 45 degree of angles.
A kind of center pivot sprinkling machine center pivot sealing device the most according to claim 1, it is characterized in that, being provided with expansion joint between described fixed water inlet pipe and spheric seating, the upper end of described expansion joint is fixing with the bottom of spheric seating to be connected, and the lower end of expansion joint is fixing with the upper end of fixed water inlet pipe to be connected.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310363974.1A CN103423535B (en) | 2013-08-19 | 2013-08-19 | A kind of center pivot sprinkling machine center pivot sealing device |
| PCT/CN2013/082258 WO2015024271A1 (en) | 2013-08-19 | 2013-08-26 | Sealing apparatus for central pivot of circular sprinkling machine |
| AU2013101705A AU2013101705A4 (en) | 2013-08-19 | 2013-08-26 | Sealing device of center pivot of circular irrigation sprinkler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310363974.1A CN103423535B (en) | 2013-08-19 | 2013-08-19 | A kind of center pivot sprinkling machine center pivot sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103423535A CN103423535A (en) | 2013-12-04 |
| CN103423535B true CN103423535B (en) | 2016-12-28 |
Family
ID=49648695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310363974.1A Active CN103423535B (en) | 2013-08-19 | 2013-08-19 | A kind of center pivot sprinkling machine center pivot sealing device |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN103423535B (en) |
| AU (1) | AU2013101705A4 (en) |
| WO (1) | WO2015024271A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109874476B (en) * | 2019-04-10 | 2021-10-26 | 山东农业工程学院 | Three-dimensional adjustable spray head for fruit tree spraying equipment |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR982411A (en) * | 1943-06-17 | 1951-06-11 | Messier Sa | Seals on joint faces, ball joints and others |
| US4012060A (en) * | 1975-03-31 | 1977-03-15 | Reneau Bobby J | Ball flex union |
| CN2221680Y (en) * | 1995-01-24 | 1996-03-06 | 曹宗瑞 | Bearing contact efficient sealing structure |
| JPH09229264A (en) * | 1996-02-19 | 1997-09-05 | Ninomiya Sangyo Kk | Bendable and expansible universal joint |
| CN2493725Y (en) * | 2001-06-03 | 2002-05-29 | 魏玺林 | Glass fibre reinforced plastics double-layer energy-saving thermal-insulating slide window frame |
| CN2516613Y (en) * | 2001-12-01 | 2002-10-16 | 张书斌 | Floor drain with sealing cover |
| CN201496714U (en) * | 2009-09-08 | 2010-06-02 | 泰州市新方圆补偿器制造有限公司 | High temperature resistant corrugated expansion joint |
| CN201706109U (en) * | 2010-05-11 | 2011-01-12 | 成都川路塑胶集团有限公司 | Correcting sealing water pipe joint |
| CN102261534A (en) * | 2011-05-04 | 2011-11-30 | 同济大学 | Novel pipeline flexible joint with great deformation capability |
| CN102563254A (en) * | 2012-03-28 | 2012-07-11 | 天津佩霖分析仪器有限公司 | Novel rotary joint |
| CN202868155U (en) * | 2012-09-07 | 2013-04-10 | 江苏中兴水务有限公司 | Spherical universal joint swing arm-type connecting pipe of water intaking pump vessel |
| CN102878370A (en) * | 2012-09-19 | 2013-01-16 | 常州市常泰冷却设备有限公司 | Pipe joint device taking arc surface as sealing surface |
| CN202812560U (en) * | 2012-09-22 | 2013-03-20 | 山东飞越机械有限公司 | Half-ring flange type spherical rotary joint |
| CN203453675U (en) * | 2013-08-19 | 2014-02-26 | 甘肃华瑞农业股份有限公司 | Sealing device of central supporting shaft of center pivot sprinkling machine |
-
2013
- 2013-08-19 CN CN201310363974.1A patent/CN103423535B/en active Active
- 2013-08-26 WO PCT/CN2013/082258 patent/WO2015024271A1/en active Application Filing
- 2013-08-26 AU AU2013101705A patent/AU2013101705A4/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CN103423535A (en) | 2013-12-04 |
| WO2015024271A1 (en) | 2015-02-26 |
| AU2013101705A4 (en) | 2015-01-22 |
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