CN104843611A - Positioning unit for carrying and lifting safety valve - Google Patents
Positioning unit for carrying and lifting safety valve Download PDFInfo
- Publication number
- CN104843611A CN104843611A CN201510270775.5A CN201510270775A CN104843611A CN 104843611 A CN104843611 A CN 104843611A CN 201510270775 A CN201510270775 A CN 201510270775A CN 104843611 A CN104843611 A CN 104843611A
- Authority
- CN
- China
- Prior art keywords
- safety valve
- lifting
- frame panel
- swing arm
- leading screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/06—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs mounted for jibbing or luffing movements
- B66C23/08—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs mounted for jibbing or luffing movements and adapted to move the loads in predetermined paths
- B66C23/10—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs mounted for jibbing or luffing movements and adapted to move the loads in predetermined paths the paths being substantially horizontal; Level-luffing jib-cranes
- B66C23/14—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs mounted for jibbing or luffing movements and adapted to move the loads in predetermined paths the paths being substantially horizontal; Level-luffing jib-cranes with means, e.g. pantograph arrangements, for varying jib configuration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/16—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs supported by columns, e.g. towers having their lower end mounted for slewing movements
- B66C23/163—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs supported by columns, e.g. towers having their lower end mounted for slewing movements where only part of the column rotates, i.e. at least the bottom part is fixed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/205—Arrangements for transmitting pneumatic, hydraulic or electric power to movable parts or devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/22—Hydraulic devices or systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C2700/00—Cranes
- B66C2700/03—Cranes with arms or jibs; Multiple cranes
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Handcart (AREA)
Abstract
The invention belongs to the technical field of checking of safety valves and relates to equipment for carrying and lifting safety valves, in particular to a positioning unit for carrying and lifting safety valves. The positioning unit comprises a cart and a lifting positioning mechanism used for lifting the safety valves. The lifting positioning mechanism comprises a pillar; a gearbox is disposed at the top of the pillar; the gearbox is provided with a motor; the output end of the motor is connected with the input end of the gearbox; the output end of the gear is connected with a first screw; a cross arm is connected within a slide arranged in the surface of the pillar; the lower portion of the first screw is connected with a nut arranged on the cross arm, in a threaded manner; the cross arm is driven to move up and down through the first screw; a butt ring is connected to the front end of the cross arm; a check table is disposed beside the pillar; a check base is disposed on the check table. The positioning unit has the advantages that labor intensity can be greatly lowered for operators operating at a check station and work efficiency is improved.
Description
Technical field
The invention belongs to safety valve testing technical field, relate to the carrying of safety valve, lifting means, specifically a kind of safety valve carrying and lifting positioner device.
Background technology
Safety valve is the important safety annex of the bearing devices such as boiler, pressure container and pressure pipeline, at least must verify once every year.Safety valve testing adopts off-line verification mode mostly, that is: pulled down by safety valve and send the safety valve testing mechanism of qualification (safety valve testing station) to verify.
Safety valve specification is not of uniform size, and from DN8mm to DN500mm not etc., the large safety valve of weight is close to 1000Kg for bore.During safety valve testing, first to be transported to by safety valve checkout platform, again safety valve to be verified is promoted, is placed on the verification seat of overhead certain altitude, and make safety valve navigate to the center (otherwise safety valve admission port cannot be made to realize sealing) of verification seat.Then, verification seat applies gripping power, to ensure airtightly in checking procedure between safety valve inlet flange and verification seat seal block not leak, and then starts to carry out adjustment to safety valve.
Because a lot of safety valve testing stations site condition is limited, many check bits are all located in office occupancy, cannot equip the hanging devices such as crane, will face very large difficulty when the heavy caliber safety valve that verification weight is larger; Meanwhile, even if there is hanging device, due to safety valve all not having suspension hook, with tightrope (or steel rope) lifting after, valve body can tilt, by navigate to verification seat center on also require great effort very much time-consuming.
Summary of the invention
The present invention is directed to the problems referred to above, provide a kind of safety valve to carry and lifting positioner device, adopt this device significantly can reduce the labour intensity of safety valve testing station operating personal, increase work efficiency.
According to technical scheme of the present invention: a kind of safety valve carrying and lifting positioner device, it is characterized in that: comprise the go-cart for carrying safety valve and the lifting detent mechanism for safety valve lifting, described lifting detent mechanism comprises column, column top is provided with gear case, gear case is provided with motor, motor output end is connected with gear box input, gearbox output connects the first leading screw, transverse arm is connected with in leg surface chute, first leading screw bottom is threaded with the screw on crossbeam, transverse arm up-and-down movement is driven by the first leading screw, transverse arm front end is connected with butt joint ring, column side is provided with checking table, checking table is provided with verification seat, described go-cart comprises frame panel, described frame panel is provided with stay bearing plate, stay bearing plate front end is fixed with docking crossbeam, described docking crossbeam is hinged with left swing arm, the right swing arm of the effect of cooperatively interacting, left swing arm, both right swing arms bare terminal are fixed one respectively and are lifted block, left swing arm, both a right swing arms operating side hinged connecting rod respectively, described two connecting rods are all fixedly connected with slider nut, be rotationally connected rocker handle on the supporting plate, rocker handle front end is fixedly connected with the second leading screw, the second leading screw is threaded with slider nut.
As a further improvement on the present invention, described frame panel rear end is provided with base, base lower end is rotated and is provided with bull wheel, and connecting arm lower end is rotationally connected with on frame panel by axle, and connecting arm upper end is connected on base, base is fixed with hydraulic actuating cylinder, the piston rod of hydraulic actuating cylinder holds out against in frame panel rear end lower, and control stalk is connected on the connection wing plate of hydraulic actuating cylinder, and control stalk can move up and down, be provided with spring in control stalk bottom, spring is used for the reset of control stalk; Frame panel front bottom end is provided with steamboat by steamboat link rotatable.
As a further improvement on the present invention, described column rotates and is arranged on upright post base, and upright post base is fixed on bottom surface, work area.
As a further improvement on the present invention, described stay bearing plate is connected on frame panel by connecting panel.
As a further improvement on the present invention, described frame panel is provided with hold down groove, and stay bearing plate is placed in hold down groove.
Technique effect of the present invention is: product of the present invention is a kind of combined multifunctional mechanical device, the neck of different size size flange form safety valve flange in the bottom upper end can be blocked and make it promote to leave ground, and for safety valve testing station manufacture and design volume little, simple to operate and the safety valve fast lifting of different bore weight can be navigated to verification seat center equipment very necessary, it can significantly reduce safety valve testing station operating personal labour intensity, increase work efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the topology view promoting detent mechanism in the present invention.
Fig. 3 is cart structure view in the present invention.
Fig. 4 is the birds-eye view of Fig. 3.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further described.
In Fig. 1 ~ 4, comprise upright post base 1, column 2, transverse arm 3, first leading screw 4, gear case 5, motor 6, butt joint ring 7, safety valve 8, docking crossbeam 9, verification seat 10, checking table 11, control stalk 12, hydraulic actuating cylinder 13, spring 14, base 15, connecting arm 16, axle 17, bull wheel 18, frame panel 19, steamboat 20, steamboat connecting rod 21, rocker handle 22, stay bearing plate 23, second leading screw 24, connecting panel 25, connecting rod 26, left rocking arm 27, lift block 28, slider nut 29, hold down groove 30, right swing arm 31 etc.
As shown in Fig. 1 ~ 4, the present invention is the carrying of a kind of safety valve and lifting positioner device, comprise the go-cart for carrying safety valve and the lifting detent mechanism for safety valve lifting, described lifting detent mechanism comprises column 2, column 2 top is provided with gear case 5, gear case 5 is provided with motor 6, motor 6 mouth is connected with gear case 5 input end, gear case 5 mouth connects the first leading screw 4, transverse arm 3 is connected with in the surperficial chute of column 2, first leading screw 4 bottom is threaded with the screw on crossbeam 3, transverse arm 3 up-and-down movement is driven by the first leading screw 4, transverse arm 3 front end is connected with butt joint ring 7, column 2 side is provided with checking table 11, checking table 11 is provided with verification seat 10, described go-cart comprises frame panel 19, described frame panel 19 is provided with stay bearing plate 23, stay bearing plate 23 front end is fixed with docking crossbeam 9, described docking crossbeam 9 is hinged with the left swing arm 27 of the effect of cooperatively interacting, right swing arm 31, left swing arm 27, both right swing arms 31 bare terminal is fixed one respectively and is lifted block 28, left swing arm 27, both right swing arms 31 operating side is a hinged connecting rod 26 respectively, described two connecting rods 26 are all fixedly connected with slider nut 29, stay bearing plate 23 is rotationally connected rocker handle 22, rocker handle 22 front end is fixedly connected with the second leading screw 24, second leading screw 24 is threaded with slider nut 29.
Frame panel 19 rear end is provided with base 15, base 15 lower end is rotated and is provided with bull wheel 18, connecting arm 16 lower end is rotationally connected with on frame panel 19 by axle 17, connecting arm 16 upper end is connected on base 15, and base 15 is fixed with hydraulic actuating cylinder 13, and the piston rod of hydraulic actuating cylinder 13 holds out against in frame panel 19 rear end lower, control stalk 12 is connected on the connection wing plate of hydraulic actuating cylinder 13, and control stalk 12 can move up and down, be provided with spring 14 in control stalk 12 bottom, spring 14 is for the reset of control stalk 12; Frame panel 19 front bottom end is rotated by steamboat connecting rod 21 and is provided with steamboat 20.
Column 2 rotates and is arranged on upright post base 1, and upright post base 1 is fixed on bottom surface, work area, and stay bearing plate 23 is connected on frame panel 19 by connecting panel 25.
Frame panel 19 is provided with hold down groove 30, and stay bearing plate 23 is placed in hold down groove 30.
Working process of the present invention comprises the clamping carrying of safety valve and promotes location, wherein clamp transport operation as follows: down press control stalk 12, under the effect of connecting rod and spring 14, piston stroking upward in hydraulic actuating cylinder, piston rod is connected to forklift bottom plate, under the drive of connecting arm 16 and adapter shaft 17 and connecting rod mechanism, forklift bottom plate raises; The clamping device be fixed on base plate also increases, thus ground is left in the safety valve clamped lifting.Control stalk 12 is also connected with base 15, can control the sense of motion of base 15.When shake rocker handle 22, drive the second leading screw 24 to rotate, slide block spiral shell is connected with bull wheel 18 again.So just can pass through left rotation and right rotation control stalk, control slider nut 29 and move forward, drivening rod 26 rotates around slide block artis, and left swing arm 27 and right swing arm 31 rotate around the artis of connecting rod 26, and swing arm is opened.Lifting block 28 and just can clamp safety valve neck in swing arm.Once after clamping, because the second leading screw 24 and slider nut 29 have self-locking action, clamp would not loosen, and so just can reach the object of fastening safety valve.
The lifting location action process of safety valve is as follows: when being transported to by safety valve near verification station (checking table), promotes detent mechanism and starts working.Wherein, transverse arm 3 can rotate around column 2, meanwhile, when motor 6 drives leading screw 4 to rotate forward or backwards by drive gear casing 5, transverse arm 3 can be driven to move up and down along column 2.The butt joint ring 7 be contained on transverse arm 3 can dock with the docking crossbeam 9 on clamping device and coordinate, and is sling by the safety valve of clamping.The length of transverse arm 3 and rotational angle, all through accurate Calculation, make just in time to make safety valve 8 be positioned on verification seat 10 line of centers when turning to the dead point above verification seat 10, move down and safety valve 8 to be verified accurately can be placed on seal block.After having verified, after butt joint ring 7 is connected with docking crossbeam 9, safety valve 8 is withdrawn from checking table and remove, by rotating and move down transverse arm 3, make docking crossbeam 9 and safety valve 8 again embed go-cart, dragged away and remove.
Claims (5)
1. a safety valve carrying and lifting positioner device, it is characterized in that: comprise the go-cart for carrying safety valve and the lifting detent mechanism for safety valve lifting, described lifting detent mechanism comprises column (2), column (2) top is provided with gear case (5), gear case (5) is provided with motor (6), motor (6) mouth is connected with gear case (5) input end, gear case (5) mouth connects the first leading screw (4), transverse arm (3) is connected with in column (2) surperficial chute, first leading screw (4) bottom is threaded with the screw on crossbeam (3), transverse arm (3) up-and-down movement is driven by the first leading screw (4), transverse arm (3) front end is connected with butt joint ring (7), column (2) side is provided with checking table (11), checking table (11) is provided with verification seat (10), described go-cart comprises frame panel (19), described frame panel (19) is provided with stay bearing plate (23), stay bearing plate (23) front end is fixed with docking crossbeam (9), described docking crossbeam (9) is hinged with the left swing arm (27) of the effect of cooperatively interacting, right swing arm (31), left swing arm (27), both bare terminals of right swing arm (31) are fixed one respectively and are lifted block (28), left swing arm (27), both operating sides of right swing arm (31) hinged connecting rod (26) respectively, described two connecting rods (26) are all fixedly connected with slider nut (29), stay bearing plate (23) is rotationally connected rocker handle (22), rocker handle (22) front end is fixedly connected with the second leading screw (24), second leading screw (24) is threaded with slider nut (29).
2. according to safety valve carrying according to claim 1 and lifting positioner device, it is characterized in that: described frame panel (19) rear end is provided with base (15), base (15) lower end is rotated and is provided with bull wheel (18), connecting arm (16) lower end is rotationally connected with on frame panel (19) by axle (17), connecting arm (16) upper end is connected on base (15), base (15) is fixed with hydraulic actuating cylinder (13), the piston rod of hydraulic actuating cylinder (13) holds out against in frame panel (19) rear end lower, control stalk (12) is connected on the connection wing plate of hydraulic actuating cylinder (13), and control stalk (12) can move up and down, spring (14) is provided with in control stalk (12) bottom, spring (14) is for the reset of control stalk (12), frame panel (19) front bottom end is rotated by steamboat connecting rod (21) and is provided with steamboat (20).
3. according to safety valve carrying according to claim 1 and lifting positioner device, it is characterized in that: described column (2) rotates and is arranged on upright post base (1), and upright post base (1) is fixed on bottom surface, work area.
4., according to safety valve carrying according to claim 1 and lifting positioner device, it is characterized in that: described stay bearing plate (23) is connected on frame panel (19) by connecting panel (25).
5., according to safety valve carrying according to claim 1 and lifting positioner device, it is characterized in that: described frame panel (19) is provided with hold down groove (30), stay bearing plate (23) is placed in hold down groove (30).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510270775.5A CN104843611A (en) | 2015-05-25 | 2015-05-25 | Positioning unit for carrying and lifting safety valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510270775.5A CN104843611A (en) | 2015-05-25 | 2015-05-25 | Positioning unit for carrying and lifting safety valve |
Publications (1)
Publication Number | Publication Date |
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CN104843611A true CN104843611A (en) | 2015-08-19 |
Family
ID=53843673
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201510270775.5A Pending CN104843611A (en) | 2015-05-25 | 2015-05-25 | Positioning unit for carrying and lifting safety valve |
Country Status (1)
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CN (1) | CN104843611A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110143543A (en) * | 2019-06-12 | 2019-08-20 | 江南大学 | Safety valve testing handling device |
CN116499734A (en) * | 2023-06-25 | 2023-07-28 | 安泰源特种设备检测集团有限公司 | Elevator safety valve verification platform and verification method thereof |
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CN103278314A (en) * | 2013-04-28 | 2013-09-04 | 江南大学 | Safety valve check bench |
CN203418638U (en) * | 2013-07-26 | 2014-02-05 | 唐山学院 | Automatic blank feeding machine for domestic ceramics |
CN203470722U (en) * | 2013-08-15 | 2014-03-12 | 浙江安统汽车部件有限公司 | Swing arm type plate transposition mechanism |
CN103863378A (en) * | 2012-12-18 | 2014-06-18 | 黄兴来 | Lift-type gripper jaw transfer carriage |
CN203888839U (en) * | 2014-03-13 | 2014-10-22 | 浙江富通光纤技术有限公司 | Bar stock overturning dolly |
CN204304723U (en) * | 2014-11-05 | 2015-04-29 | 东莞市隆盛压铸设备有限公司 | Rotor special vertical extractor |
CN204661248U (en) * | 2015-05-25 | 2015-09-23 | 江南大学 | Safety valve carrying and lifting positioner device |
-
2015
- 2015-05-25 CN CN201510270775.5A patent/CN104843611A/en active Pending
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
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CN2161599Y (en) * | 1993-07-05 | 1994-04-13 | 杭州液压工具总厂 | Hand-operated hydraulic transportation vehicle |
CN201713598U (en) * | 2010-06-25 | 2011-01-19 | 上海汉虹精密机械有限公司 | Automatic crucible carrying mechanism |
CN202861414U (en) * | 2012-08-16 | 2013-04-10 | 齐齐哈尔四达铁路设备有限责任公司 | Feeding and blanking mechanical arm for railway vehicle wheel |
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CN103009173A (en) * | 2012-12-31 | 2013-04-03 | 合肥工业大学 | Five-axis automatic double-station material loading and unloading mechanism of plate part |
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CN203418638U (en) * | 2013-07-26 | 2014-02-05 | 唐山学院 | Automatic blank feeding machine for domestic ceramics |
CN203470722U (en) * | 2013-08-15 | 2014-03-12 | 浙江安统汽车部件有限公司 | Swing arm type plate transposition mechanism |
CN203888839U (en) * | 2014-03-13 | 2014-10-22 | 浙江富通光纤技术有限公司 | Bar stock overturning dolly |
CN204304723U (en) * | 2014-11-05 | 2015-04-29 | 东莞市隆盛压铸设备有限公司 | Rotor special vertical extractor |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110143543A (en) * | 2019-06-12 | 2019-08-20 | 江南大学 | Safety valve testing handling device |
CN110143543B (en) * | 2019-06-12 | 2024-05-03 | 江南大学 | Safety valve checking and carrying device |
CN116499734A (en) * | 2023-06-25 | 2023-07-28 | 安泰源特种设备检测集团有限公司 | Elevator safety valve verification platform and verification method thereof |
CN116499734B (en) * | 2023-06-25 | 2023-09-26 | 安泰源特种设备检测集团有限公司 | Elevator safety valve verification platform and verification method thereof |
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PB01 | Publication | ||
EXSB | Decision made by sipo to initiate substantive examination | ||
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Application publication date: 20150819 |
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RJ01 | Rejection of invention patent application after publication |