CN105909913A - Permanent magnetism positioning emergency plugging device based on pressure vessel fillet weld leakage - Google Patents

Permanent magnetism positioning emergency plugging device based on pressure vessel fillet weld leakage Download PDF

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Publication number
CN105909913A
CN105909913A CN201610238720.0A CN201610238720A CN105909913A CN 105909913 A CN105909913 A CN 105909913A CN 201610238720 A CN201610238720 A CN 201610238720A CN 105909913 A CN105909913 A CN 105909913A
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China
Prior art keywords
rod
strong magnetic
hinge
spring
magnetic mechanism
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CN201610238720.0A
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Chinese (zh)
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CN105909913B (en
Inventor
闫宏伟
焦彪彪
崔子梓
杨晋
陆辉山
王福杰
霍红
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North University of China
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North University of China
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/168Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
    • F16L55/17Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose

Abstract

The invention relates to a permanent magnetism positioning emergency plugging device based on pressure vessel fillet weld leakage, and belongs to the pipeline engineering field; the permanent magnetism positioning emergency plugging device based on pressure vessel fillet weld leakage uses a strong magnet to fix the plugging device in a to-be-plugged position; a linkage can press a plugging assembly in the leakage portion; a spring steel bar composite rubber layer and seal rubber layer deformation plugging mode can plug the large radian or surface variable leakage portion; the permanent magnetism positioning emergency plugging device based on pressure vessel fillet weld leakage comprises a strong magnetic mechanism, the linkage and the plugging assembly; the linkage is arranged above the strong magnetic mechanism so as to form a four-connecting rod structure with the strong magnetic mechanism; the strong magnetic mechanism is hinged to a drive pull rod; the top of the drive pull rod is provided with a handle; the handle is respectively hinged to the drive pull rod and a third hinge; the plugging assembly is connected with a second hinge.

Description

The emergent plugging device in a kind of permanent magnetism based on pressure vessel welding seam leakage at angle point location
Technical field
The emergent plugging device in a kind of permanent magnetism based on pressure vessel welding seam leakage at angle point of present invention location, belongs to pipeline engineering technical field.
Background technology
Along with Chemical Manufacture scale development and constantly expand, consersion unit, storage facilities and pipeline pressure improve constantly, leakage accident happens occasionally, cause casualties and environmental pollution and energy waste, therefore consersion unit, the emergent closure work of storage facilities and pipeline becomes modern petrochemical and produces and very important link in storage and transport process, in the urgent need to can quickly effective and safe plugging device implement the emergent closure to accident pipeline, thus be effectively controlled dangerous matter sources and reduce it as far as possible leaking the casualties and environmental pollution and energy waste brought.
External closure damage repair technology development is relatively early, but it is as social development and technological progress, China many specializations pipe plugging company arises at the historic moment, reach international most advanced level, but compared with abroad, China technically there is also bigger gap in submarine pipeline maintenance, High Temperature High Pressure closure, line break repairing, and special media repairing etc..
Blocking technology presses apparatus construction features and operating principle, various ways can be divided into, suspension type is mainly had to block, disc type blocks, cartridge type blocks, fold closure, baffle plate one bag-type blockage, strong magnetic and freeze plugging etc., the most existing strong magnetic blocks, the magnetic force utilizing permanent magnet during closure is pressed on leak thin rubber pad and realizes closure, but the leakage situation for storage tank Yu the angle welding of pipeline generally uses the method for blocking being coated with and being set for special fixture completely to realize closure, but these closure mode adaptivitys are poor, closure pressure is low, and the time of process is long, it is difficulty with the emergent closure of danger medium leakage.
Summary of the invention
Instant invention overcomes the deficiency that prior art exists, provide the emergent plugging device in a kind of permanent magnetism based on pressure vessel welding seam leakage at angle point location, by the strong magnetic of kicker magnet, plugging device is fixedly mounted on position to be blocked, by linkage blocking component is pressed at the angle welding of leakage container or large-scale pipeline, utilize steel spring plate, spring steel bar composite rubber layer and caulking gum layer combine, utilize deformation closure mode that big radian or surface are changed leak greatly and implement closure, and then adapt to such as the closure face such as angle welding or lap weld and implement reliable closure.
nullIn order to solve above-mentioned technical problem,The technical solution used in the present invention is: the emergent plugging device in a kind of permanent magnetism based on pressure vessel welding seam leakage at angle point location,Including strong magnetic mechanism、Linkage and blocking component,Described linkage arranges the top with strong magnetic mechanism,Described linkage includes front rod、Middle connecting rod and back link,Described front rod、Middle connecting rod and back link are laminated structure,The front end of one end of described front rod and strong magnetic mechanism upper surface is by the first hinge,The other end of described front rod passes through the second hinge with one end of middle connecting rod,The other end of described middle connecting rod and one end of back link are by the 3rd hinge,The other end of described back link passes through the 4th hinge with the rear end of strong magnetic mechanism upper surface,Described front rod、The upper surface of middle connecting rod and back link and strong magnetic mechanism forms four-bar linkage structure,The middle part of described strong magnetic mechanism upper surface is hinged with driving pull bar,Described driving pull bar extends to the top of middle connecting rod through the middle part of middle connecting rod,The upper end of described drive link is provided with handle,Described handle is T-type structure,One end of horizontal direction is hinged with drive link,The other end and the triple hinged rotary shaft of horizontal direction are hinged,The rotary shaft of described blocking component and the second hinge is connected by push rod.
Described push rod includes front push rod, adapter and rear push-rod, described front push rod is rod-like structure, one end of described front push rod is provided with the stator for being connected with blocking component, the other end of described front push rod has screw thread, described adapter includes connecting tube and connecting plate, described connecting tube is tubular structure, described front push rod is opened threaded one end and is arranged at inside connecting tube, the quantity of described front push rod and connecting tube is two, described connecting plate is two, it is symmetricly set in the two ends of connecting tube, the outside of said two connecting plate is provided with nut fixing with connecting tube for front push rod, described rear push-rod passes two connecting plates and is arranged at the centre of two connecting tubes, one end of described rear push-rod is hinged with the rotary shaft of the second hinge, the other end of described rear push-rod is fixed on connecting plate in the axial direction by nut.
Described blocking component includes spring stacking baffle plate and spring steel bar compounded rubber, described spring stacking baffle plate includes multiple steel spring plate, multiple described steel spring plates stack from small to large ord, the lower surface of described spring stacking baffle plate is provided with steel sheet connector, described steel sheet connector extends to the upper surface of spring stacking baffle plate through spring stacking baffle plate, the upper end of described steel sheet connector passes stator, and be connected by nut and stator are fixing, described spring steel bar compounded rubber is arranged at the lower surface of spring stacking baffle plate by high-performance adhesive glue.
Described spring steel bar compounded rubber includes that spring steel bar and compounded rubber, the quantity of described spring steel bar are multiple, is uniformly distributed in compounded rubber.
The outside of described spring steel bar compounded rubber is provided with caulking gum layer.
The side of described strong magnetic mechanism is provided with the magnetic switch for starting strong magnetic mechanism.
The present invention compared with prior art has the advantages that
1, this device utilizes soft deformable blocking component to block leak, device itself is made to have the strongest closure adaptability, the welding seam leakage at angle point that certain limit radius pipe connection method can connect root blocks, and the leakage of the complex environments such as the angle welding of main equipment and pipeline and lap weld can block the quick blocking of the leakage realizing storage tank angle welding different with large-scale pipeline or downhand weld with sealant with the closure mode using linkage, stacking steel spring plate, spring steel composite rubber layer to combine.
2, the spring steel composite rubber layer that this device uses, uses the placement that spring steel bar blends with compounded rubber, and this kind of composite construction can transmit the extruding force bigger than general compounded rubber.
3, this device combines permanent magnet technology, is arranged on storage tank or large-scale pipeline by strong magnetic mechanism and realizes being accurately positioned of whole device, and after magnetic force disappears, device can easily take off, and conveniently transfers to other positions and blocks.
4, this device promotes linkage to provide thrust for blocking component by handle and drive rod, owing to linkage is quadric chain, the inherent character utilizing linkage in compaction process realizes the continuous increase of thrust, carries out self-locking finally by double leval jib and prevents from stopper from sliding during pressure oscillation making closure lose efficacy.
5, the present invention pacifies simple in construction does not has the auxiliary devices such as compressor, and dress speed is fast, installs resistance little, and closure pressure is big.
6, this device can be loaded on mechanical arm, realizes the emergent closure of automatization by control system.
7, blocking component can be replaced by this device according to different size storage tank and large-scale pipeline, or is adjusted the length of push rod according to specific environment, so that blocking component adapts to the closure of the leakage point of different situations and size.
Accompanying drawing explanation
The present invention is described further below in conjunction with the accompanying drawings.
Fig. 1 is entire combination view one of the present invention.
Fig. 2 is entire combination view two of the present invention.
Fig. 3 is the structural representation of push rod in the present invention.
Fig. 4 is spring stacking baffle plate and the component diagram of front push rod in the present invention.
Fig. 5 is the structural representation of spring steel bar compounded rubber in the present invention.
Fig. 6 is present invention state diagram operationally.
In figure, 1 is strong magnetic mechanism, 2 is linkage, 3 is blocking component, 4 for driving pull bar, 5 is hands handle, 6 is push rod, 7 is magnetic switch, 20 is front rod, 21 is middle connecting rod, 22 is back link, 23 is the first hinge, 24 is the second hinge, 25 is the 3rd hinge, 26 is the 4th hinge, 30 is spring stacking baffle plate, 31 is spring steel bar compounded rubber, 32 is steel spring plate, 33 is steel sheet connector, 34 is spring steel bar, 35 is caulking gum layer, 60 is front push rod, 61 is adapter, 62 is rear push-rod, 63 is stator, 64 is connecting tube, 65 is connecting plate.
Detailed description of the invention
nullAs shown in Fig. 1 ~ Fig. 6,The emergent plugging device in a kind of permanent magnetism based on pressure vessel welding seam leakage at angle point of present invention location,Including strong magnetic mechanism 1、Linkage 2 and blocking component 3,Described linkage 2 arranges the top with strong magnetic mechanism 1,Described linkage 2 includes front rod 20、Middle connecting rod 21 and back link 22,Described front rod 20、Middle connecting rod 21 and back link 22 are laminated structure,One end of described front rod 20 and the front end of strong magnetic mechanism 1 upper surface are hinged by the first hinge 23,The other end of described front rod 20 and one end of middle connecting rod 21 are hinged by the second hinge 24,The other end of described middle connecting rod 21 and one end of back link 22 are hinged by the 3rd hinge 25,The other end of described back link 22 and the rear end of strong magnetic mechanism 1 upper surface are hinged by the 4th hinge 26,Described front rod 20、The upper surface of middle connecting rod 21 and back link 22 and strong magnetic mechanism 1 forms four-bar linkage structure,The middle part of described strong magnetic mechanism 1 upper surface is hinged with driving pull bar 4,The middle part that described driving pull bar 4 passes middle connecting rod 21 extends to the top of middle connecting rod 21,The upper end of described drive link 4 is provided with handle 5,Described handle 5 is T-type structure,One end of horizontal direction is hinged with drive link 4,The other end of horizontal direction and the rotary shaft of the 3rd hinge 25 are hinged,Described blocking component 3 is connected by push rod 6 with the rotary shaft of the second hinge 24.
nullDescribed push rod 6 includes front push rod 60、Adapter 61 and rear push-rod 62,Described front push rod 60 is rod-like structure,One end of described front push rod 60 is provided with the stator 63 for being connected with blocking component 3,The other end of described front push rod 60 has screw thread,Described adapter 61 includes connecting tube 64 and connecting plate 65,Described connecting tube 64 is tubular structure,Described front push rod 60 is opened threaded one end and is arranged at connecting tube 64 inside,The quantity of described front push rod 60 and connecting tube 64 is two,Described connecting plate 65 is two,It is symmetricly set in the two ends of connecting tube 64,The outside of said two connecting plate 65 is provided with front push rod 60 and the fixing nut of connecting tube 64,Described rear push-rod 62 passes two connecting plates 65 and is arranged at the centre of two connecting tubes 64,One end of described rear push-rod 62 is hinged with the rotary shaft of the second hinge 24,The other end of described rear push-rod 62 is axially fixed on connecting plate 65 by nut.
Described blocking component 3 includes spring stacking baffle plate 30 and spring steel bar compounded rubber 31, described spring stacking baffle plate 30 includes multiple steel spring plate 32, multiple described steel spring plates 32 stack from small to large ord, the lower surface of described spring stacking baffle plate is provided with steel sheet connector 33, described steel sheet connector 33 extends to the upper surface of spring stacking baffle plate 30 through spring stacking baffle plate 30, the upper end of described steel sheet connector 33 passes stator 63, and be connected by nut is fixing with stator 63, described spring steel bar compounded rubber 31 is arranged at the lower surface of spring stacking baffle plate 30 by high-performance adhesive glue.
Described spring steel bar compounded rubber 31 includes that spring steel bar 34 and compounded rubber, the quantity of described spring steel bar 34 are multiple, is uniformly distributed in compounded rubber.
The outside of described spring steel bar compounded rubber 31 is provided with caulking gum layer 35.
The side of described strong magnetic mechanism 1 is provided with the magnetic switch 7 for starting strong magnetic mechanism 1.
Specifically used method:
When finding in adapter or the angle welding of flange and other positions, container or large-scale pipeline occur that small-sized crack or perforation occur leakage owing to life-time service is corroded by material interiorly or exteriorly, need leak is blocked.
First, by blocking component 3 rough alignment angle welding leak source, adjust push rod 6 makes its thrust produced consistent with leak source leakage direction with the relative angular position of leakage equipment, then opens magnetic switch 7, is fixed on by strong magnetic mechanism 1 and treats on the normal pipeline that block-up position is other.
Then the entire length of push rod 6 is regulated as desired by the bolt mechanism between front push rod 60 and adapter 61, simply fix with adapter 61 at axial direction due to rear push-rod 62 and be connected, because push rod 60 and adapter 61 can rotate around the central shaft of rear push-rod 62 before this, make blocking component 3 adapt to geometry and the requirement of closure work surface before stress as far as possible by the axial location of push rod 60 before adjusting, thus adapt to block the operating mode of operation.
After regulating the position of push rod 6 and blocking component 3, pull handle 5, handle 5 drives and drives pull bar 4 and the 3rd hinge 25 to move, due to front rod 20, middle connecting rod 21 and back link 22 are respectively by the first hinge 23, second hinge 24, 3rd hinge 25 and the 4th hinge 26 are connected with strong magnetic mechanism 1, and form four-bar linkage structure, therefore when the 3rd hinge 25 moves, quadric chain is taken advantage of a situation deformation, along with gradually moving down of handle 5, second hinge 24 gradually moves forward, owing to push rod 6 is connected with the second hinge 24, therefore, push rod 6 drives blocking component 3 gradually to move forward, owing to blocking component 3 is positioned over the position corresponding to leakage point, therefore blocking component 3 gradually presses to leakage point, continuous reach along with push rod 6, push rod provides the thrust being gradually increased for blocking component 3.
Now, blocking component 3 utilizes spring stacking baffle plate 30 to provide thrust for spring steel bar compounded rubber 31, while compressing, self-deformation is to adapt to the closure face of the welding ring-shaped fillet weld of different radii, overall predeformation is provided for blocking component, spring steel bar compounded rubber 31 realizes deforming with further self adaptation than spring stacking baffle plate 30 by the mutual dislocation between spring steel bar 34 and extruding when by the extruding force of spring stacking baffle plate 30, utilize caulking gum layer 35 directly to contact with closure face simultaneously, microdeformation is carried out further under deformation and extruding at spring stacking baffle plate 30 and combining of spring steel bar compounded rubber 31, formed at closure work surface and seal structure, the geometry of angle welding is formed more preferably sealed environment thus realize closure.
Finally, handle 5 is overwhelmed to maximum position, utilize the four-bar linkage structure of linkage 2 to realize self-locking thus complete closure.
Additionally, when there is small-sized crack or perforation generation leakage in the underhand weld position finding tankage or pipeline by blocking component 3 rough alignment angle welding leak source, adjust push rod 6 makes can implement vertical with leaking surface of its thrust produced block with the relative angular position of leakage equipment, and operational approach is identical with above-mentioned steps.
Above in conjunction with accompanying drawing, embodiments of the invention are explained in detail, but the present invention is not limited to above-described embodiment, in the ken that those of ordinary skill in the art are possessed, it is also possible to various changes can be made on the premise of without departing from present inventive concept.

Claims (6)

  1. null1. the emergent plugging device in permanent magnetism based on pressure vessel welding seam leakage at angle point location,It is characterized in that: include strong magnetic mechanism (1)、Linkage (2) and blocking component (3),Described linkage (2) arranges the top with strong magnetic mechanism (1),Described linkage (2) includes front rod (20)、Middle connecting rod (21) and back link (22),Described front rod (20)、Middle connecting rod (21) and back link (22) are laminated structure,One end of described front rod (20) and the front end of strong magnetic mechanism (1) upper surface are hinged by the first hinge (23),The other end of described front rod (20) and one end of middle connecting rod (21) are hinged by the second hinge (24),The other end of described middle connecting rod (21) and one end of back link (22) are hinged by the 3rd hinge (25),The other end of described back link (22) and the rear end of strong magnetic mechanism (1) upper surface are hinged by the 4th hinge (26),Described front rod (20)、The upper surface of middle connecting rod (21) and back link (22) and strong magnetic mechanism (1) forms four-bar linkage structure,The middle part of described strong magnetic mechanism (1) upper surface is hinged with driving pull bar (4),Described driving pull bar (4) extends to the top of middle connecting rod (21) through the middle part of middle connecting rod (21),The upper end of described drive link (4) is provided with handle (5),Described handle (5) is T-type structure,One end of horizontal direction is hinged with drive link (4),The other end of horizontal direction and the rotary shaft of the 3rd hinge (25) are hinged,Described blocking component (3) is connected by push rod (6) with the rotary shaft of the second hinge (24).
  2. nullThe emergent plugging device in a kind of permanent magnetism based on pressure vessel welding seam leakage at angle point the most according to claim 1 location,It is characterized in that: described push rod (6) includes front push rod (60)、Adapter (61) and rear push-rod (62),Described front push rod (60) is rod-like structure,One end of described front push rod (60) is provided with the stator (63) for being connected with blocking component (3),The other end of described front push rod (60) has screw thread,Described adapter (61) includes connecting tube (64) and connecting plate (65),Described connecting tube (64) is tubular structure,Described front push rod (60) is opened threaded one end and is arranged at connecting tube (64) inside,The quantity of described front push rod (60) and connecting tube (64) is two,Described connecting plate (65) is two,It is symmetricly set in the two ends of connecting tube (64),The outside of said two connecting plate (65) is provided with nut fixing with connecting tube (64) for front push rod (60),Described rear push-rod (62) passes two connecting plates (65) and is arranged at the centre of two connecting tubes (64),One end of described rear push-rod (62) is hinged with the rotary shaft of the second hinge (24),The other end of described rear push-rod (62) is fixed on connecting plate (65) in the axial direction by nut.
  3. nullThe emergent plugging device in a kind of permanent magnetism based on pressure vessel welding seam leakage at angle point the most according to claim 2 location,It is characterized in that: described blocking component (3) includes spring stacking baffle plate (30) and spring steel bar compounded rubber (31),Described spring stacking baffle plate (30) includes multiple steel spring plate (32),Multiple described steel spring plates (32) stack from small to large ord,The lower surface of described spring stacking baffle plate is provided with steel sheet connector (33),Described steel sheet connector (33) extends to the upper surface of spring stacking baffle plate (30) through spring stacking baffle plate (30),The upper end of described steel sheet connector (33) passes stator (63),And be connected by nut and stator (63) are fixing,Described spring steel bar compounded rubber (31) is arranged at the lower surface of spring stacking baffle plate (30) by high-performance adhesive glue.
  4. The emergent plugging device in a kind of permanent magnetism based on pressure vessel welding seam leakage at angle point the most according to claim 3 location, it is characterized in that: described spring steel bar compounded rubber (31) includes spring steel bar (34) and compounded rubber, the quantity of described spring steel bar (34) is multiple, is uniformly distributed in compounded rubber.
  5. The emergent plugging device in a kind of permanent magnetism based on pressure vessel welding seam leakage at angle point the most according to claim 4 location, it is characterised in that: the outside of described spring steel bar compounded rubber (31) is provided with caulking gum layer (35).
  6. The emergent plugging device in a kind of permanent magnetism based on pressure vessel welding seam leakage at angle point the most according to claim 1 location, it is characterised in that: the side of described strong magnetic mechanism (1) is provided with the magnetic switch (7) for starting strong magnetic mechanism (1).
CN201610238720.0A 2016-04-18 2016-04-18 A kind of emergent plugging device of permanent magnetism positioning based on pressure vessel welding seam leakage at angle point Active CN105909913B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106870125A (en) * 2017-04-11 2017-06-20 潘伶俐 A kind of rotary engine
CN110319297A (en) * 2019-07-03 2019-10-11 天津城建大学 Gas ductwork high-pressure magnetic first-aid repair machine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070022830A1 (en) * 2005-07-29 2007-02-01 Mandziuk Michael W ID-OD discrimination sensor
DE102008001166A1 (en) * 2007-04-25 2008-10-30 Sachtleben Chemie Gmbh Method e.g. for sealing leaks in large steel tanks and piping, involves sealing leaks of ferromagnetic objects and provides seal to set up leakage by permanent magnetic field
CN202007956U (en) * 2011-04-07 2011-10-12 九江消防装备有限公司 Magnetic-pressure leaking stoppage device for firefighting
CN103195160A (en) * 2013-01-22 2013-07-10 潘勇 Drainage pipeline plug preventing people from going down into well for inspection and using method thereof
CN103231361A (en) * 2013-03-22 2013-08-07 北京林业大学 Multifunctional operation mechanical arm of forest cutting and tending machine
CN104565663A (en) * 2014-12-26 2015-04-29 中北大学 Strongly magnetic positioning airbag outer plugging device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070022830A1 (en) * 2005-07-29 2007-02-01 Mandziuk Michael W ID-OD discrimination sensor
DE102008001166A1 (en) * 2007-04-25 2008-10-30 Sachtleben Chemie Gmbh Method e.g. for sealing leaks in large steel tanks and piping, involves sealing leaks of ferromagnetic objects and provides seal to set up leakage by permanent magnetic field
CN202007956U (en) * 2011-04-07 2011-10-12 九江消防装备有限公司 Magnetic-pressure leaking stoppage device for firefighting
CN103195160A (en) * 2013-01-22 2013-07-10 潘勇 Drainage pipeline plug preventing people from going down into well for inspection and using method thereof
CN103231361A (en) * 2013-03-22 2013-08-07 北京林业大学 Multifunctional operation mechanical arm of forest cutting and tending machine
CN104565663A (en) * 2014-12-26 2015-04-29 中北大学 Strongly magnetic positioning airbag outer plugging device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106870125A (en) * 2017-04-11 2017-06-20 潘伶俐 A kind of rotary engine
CN110319297A (en) * 2019-07-03 2019-10-11 天津城建大学 Gas ductwork high-pressure magnetic first-aid repair machine

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