CN106122597A - A kind of adjustable pipeline elasticity with limit function is propped up and is hung - Google Patents
A kind of adjustable pipeline elasticity with limit function is propped up and is hung Download PDFInfo
- Publication number
- CN106122597A CN106122597A CN201610695429.6A CN201610695429A CN106122597A CN 106122597 A CN106122597 A CN 106122597A CN 201610695429 A CN201610695429 A CN 201610695429A CN 106122597 A CN106122597 A CN 106122597A
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- Prior art keywords
- sleeve
- backing plate
- hung
- propped
- rubber layer
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- 230000002457 bidirectional effect Effects 0.000 claims abstract description 24
- 150000001875 compounds Chemical class 0.000 claims abstract description 17
- 244000309464 bull Species 0.000 claims abstract description 4
- 238000012856 packing Methods 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000005987 sulfurization reaction Methods 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 8
- 238000002955 isolation Methods 0.000 abstract description 7
- 230000033228 biological regulation Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000004308 accommodation Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
- F16L3/10—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two members engaging the pipe, cable or protective tubing
- F16L3/1008—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two members engaging the pipe, cable or protective tubing with two members engaging the pipe, cable or tubing, both being made of thin band material completely surrounding the pipe
- F16L3/1016—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two members engaging the pipe, cable or protective tubing with two members engaging the pipe, cable or tubing, both being made of thin band material completely surrounding the pipe the members being joined by means of two screws
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The present invention relates to a kind of adjustable pipeline elasticity with limit function prop up and hang, belong to Control Technique of Vibration and Noise field.This bull ladle includes compound clip, backing plate, cushion block, intermediate mass, bidirectional helical sleeve, stop nut, elastic rubber layer, sleeve and base；By compound clip, cushion block and backing plate, exterior line is fixed；Threadeding with backing plate, intermediate mass respectively in the two ends of bidirectional helical sleeve, realizes described the adjustment hanging height by regulation bidirectional helical sleeve, and range of accommodation is controlled and accurate；Intermediate mass is transmitted with sleeve and base respectively by elastic rubber layer and supports, and realizes elastic vibration isolation by appropriate design elastic rubber layer.Of the present invention reasonable in design hung, compact conformation, easy for installation, under the deployment scenarios high to space requirement, there is bigger installation advantage.
Description
Technical field
The present invention relates to a kind of pipeline elasticity prop up and hang, the adjustable pipeline elasticity being specifically related to a kind of band limit function is propped up
Hang, belong to Control Technique of Vibration and Noise field.
Background technology
At present, naval vessel vibration and noise reducing is paid close attention to widely and is paid attention to, and is had along equipment under-chassis-pedestal transmission in vibration
After effect suppression, gradually highlighted by the transmission of pipeline-pedestal.Pipeline is connected to large-scale vibration absorber, power-equipment source, big
The multiple parts such as type adnexa, valve, space moves towards complicated, working medium pressure and loaded-up condition is various, vibration transfer path is many.
Transmit along pipeline to control to vibrate, need to use elasticity to lift up into row vibration isolation pipeline.
In engineering reality, naval vessel internal unit is numerous, pipeline is complicated, narrow space, pipeline and pipeline, pipeline and hull
Between gap less, carry out the traditional elastic of vibration isolation by vibroshock and prop up to hang and be subject to certain restrictions because size is relatively big.?
Under the effect that the weight of the interior medium of pipe and system are suppressed, system pipeline is lower in working order will deform, attached to system pipeline
Added prestressing force, serious in the case of pipeline can be caused take over large deformation and the vibroshock installed of equipment deform overproof, thus
Cause needing pipe-support of resetting.At high sea or by under the bad working environments such as blast impulse, pipeline may be because of load change
And produce bigger stress and deformation, the most even can exceed pipeline elasticity props up the deformation allowable hung, a structure hung
Destroyed, thus the security reliability of pipeline and system is threatened.
Summary of the invention
For defect present in prior art, it is an object of the invention to provide and a kind of there is the adjustable of limit function
Pipeline elasticity is propped up and is hung, and described elasticity is propped up to hang and can be realized freely adjusting of height on the basis of not dismantling former support means, subtracts
The construction volume that the little dismounting produced because of pipeline state change is hung, improves the security reliability at extreme operating condition lower pipeline.
It is an object of the invention to be achieved through the following technical solutions.
A kind of adjustable pipeline elasticity with limit function is propped up and is hung, and described elasticity is propped up bull ladle and included compound clip, backing plate, pad
Block, intermediate mass, bidirectional helical sleeve, stop nut, elastic rubber layer, sleeve and base；
Described compound clip be shaped as " Ω " shape, the plane at compound clip two ends is provided with bolt hole；
Being shaped as of described backing plate is "T"-shaped, is divided into plane and cylinder two parts；The upper surface middle part of plane is provided with recessed
Groove, the two ends of plane are provided with bolt hole；Cylindrical one end is mutually perpendicular to plane, and the other end is provided with screw thread；
The upper surface of described cushion block is arcwall face, and lower surface is provided with bulge-structure；
The hand of spiral that the two ends of described bidirectional helical sleeve are provided with screw thread and two ends is contrary, outside bidirectional helical sleeve
Two journal stirrups with through hole are extended radially outward out, by being inserted by adjusting rod in the through hole of journal stirrup firmly in the middle part of periphery
Reverse journal stirrup thus realize the rotation of bidirectional helical sleeve；
The bulge-structure of cushion block lower surface and the groove fit of backing plate upper surface, be combined the inner surface of clip and the upper of cushion block
Surface contacts with the outer surface of exterior line respectively, and is locked by exterior line by connecting the bolt of compound clip and backing plate；
Threadeding with the cylinder of backing plate in one end of bidirectional helical sleeve, the other end is connected with the threaded one end of intermediate mass, and leads to
Backing plate and intermediate mass are fixed by the stop nut crossing bidirectional helical sleeve two ends；The other end of intermediate mass is through the upper surface of sleeve
With inner surface and the upper surface of base that the elastic rubber layer being placed in sleeve inner is sulfided into one, elastic rubber layer and sleeve
Contacting, sleeve is fixing with base to be connected.
Described compound clip ecto-entad is integrated by rubber packing I, steel clip and rubber packing II sulfuration successively
's.
Preferably, the axial direction of rubber packing II inner surface is uniformly provided with groove, prevents pipeline from sliding axially.
Preferably, the upper surface of cushion block is uniformly provided with groove, prevents pipeline from sliding axially.
Preferably, the cylinder of backing plate is provided with scale groove, can be with positioning bidirectional screw shell by observing rule groove
The height of regulation, provides for altitude mixture control and instructs.
Preferably, base is provided with through hole, and when being used for observing carrying, whether elastic rubber layer deforms excessive.
Beneficial effect:
(1), during elasticity of the present invention is propped up and hung, intermediate mass is transmitted with sleeve and base respectively by elastic rubber layer and props up
Support, realizes elastic vibration isolation by appropriate design elastic rubber layer；Move up it addition, sleeve upper end limits intermediate mass, the end
Seat limits intermediate mass and moves down, it is achieved thereby that the limit function under extreme operating condition.
(2) elasticity of the present invention props up suspender vibration isolation and limit function integrated design, it is possible to do not dismantling former
Freely adjusting of height is realized on the basis of support arrangement, range-controllable and more accurately, easy to adjust；And reduce because of pipeline shape
The construction volume that the dismounting that state changes and produces is hung, improves the security reliability at extreme operating condition lower pipeline.
(3) reasonable in design of the present invention, compact conformation, easy for installation, in the layout feelings high to space requirement
Bigger installation advantage is had under condition.
Accompanying drawing explanation
Fig. 1 is that the elasticity described in embodiment props up the structural representation hung.
Fig. 2 is the top view of bidirectional helical sleeve.
Wherein, 1-rubber packing I, 2-steel clip, 3-rubber packing II, 4-backing plate, 5-cushion block, 6-intermediate mass, 7-is double
To screw shell, 8-stop nut, 9-elastic rubber layer, 10-sleeve, 11-base, 12-bolt.
Detailed description of the invention
The present invention will be further described with detailed description of the invention below in conjunction with the accompanying drawings.
A kind of adjustable pipeline elasticity with limit function is propped up and is hung, described elasticity prop up bull ladle include compound clip, backing plate 4,
Cushion block 5, intermediate mass 6, bidirectional helical sleeve 7, stop nut 8, elastic rubber layer 9, sleeve 10 and base 11, as shown in Figure 1；
Described compound clip be shaped as " Ω " shape, the plane at compound clip two ends is provided with bolt hole；Compound clip by
It is integrated by rubber packing I 1, steel clip 2 and rubber packing II 3 sulfuration the most successively, rubber packing II 3 inner surface
Axial direction on be uniformly provided with groove；
Being shaped as of described backing plate 4 is "T"-shaped, is divided into plane and cylinder two parts；The upper surface middle part of plane is provided with recessed
Groove, the two ends of plane are provided with bolt hole；Cylindrical one end is mutually perpendicular to plane, and the other end is provided with screw thread；Set on cylinder
There is scale groove, by observing the height of rule groove positioning bidirectional screw shell 7 regulation；
The upper surface of described cushion block 5 is arcwall face and is uniformly provided with groove, and lower surface is provided with bulge-structure；
The hand of spiral that the two ends of described screw shell 7 are provided with screw thread and two ends is contrary, at the cylindrical of bidirectional helical sleeve 7
All Middle face extend radially outward out two journal stirrups with hexagonal inner hole, as shown in Figure 2；Prop up by adjusting rod is inserted
The through hole of ear firmly reverses journal stirrup thus realizes the rotation of bidirectional helical sleeve 7, and then regulation height；
Described base 11 is provided with through hole, and when being used for observing carrying, whether elastic rubber layer 9 deforms excessive；
The bulge-structure of cushion block 5 lower surface and the groove fit of backing plate 4 upper surface, be combined inner surface and the cushion block 5 of clip
Upper surface contact with the outer surface of exterior line respectively, and by connecting the bolt 12 of compound clip and backing plate 4 by exterior tube
Road is locked；Threadeding with the cylinder of backing plate 4 in one end of bidirectional helical sleeve 7, the other end connects with the threaded one end of intermediate mass 6
Connect, and by the stop nut 8 at bidirectional helical sleeve 7 two ends, backing plate 4 and intermediate mass 6 are fixed；The other end of intermediate mass 6 is worn
The upper surface crossing sleeve 10 and the elastic rubber layer 9 being placed within sleeve 10 are sulfided into one, elastic rubber layer 9 and sleeve 10
The upper surface of inner surface and base 11 contacts, and sleeve 10 is connected by bolt 12 is fixing with base 11.
The described elasticity of this enforcement props up the design hung and assembling is as follows:
First, prop up according to elasticity and hang carrying, wave impact stress and vibration isolating effect determines thickness and the shape of elastic rubber layer 9
Shape；According to the diameter of exterior line, determine rubber packing I 1, steel clip 2, rubber packing II 3 and the shape of cushion block 5；
Then, hang carrying, exterior line design parameter according to damping body material, elasticity, wave impact stress and vibration isolation
Effect, carries out the structure design of backing plate 4, cushion block 5, intermediate mass 6, bidirectional helical sleeve 7, sleeve 10 and base 11；
Then, by sulfuration process by rubber packing I 1, steel clip 2 and rubber packing II 3 and elastic rubber layer 9 and
Intermediate mass 6 sulfuration is two parts；
Finally, by the molectron being sulfided into by elastic rubber layer 9 and intermediate mass 6 and sleeve 10, base 11, bidirectional helical set
Cylinder 7 and backing plate 4 are fitted together by bolt 12；It is assembled in exterior line by cushion block 5, compound clip, bolt 12 again
Together；Control described elasticity by regulation bidirectional helical sleeve 7 to prop up and hang height, make to hang and be in good initial stressed state,
Realize vibration isolation and limit function integration.
In sum, these are only presently preferred embodiments of the present invention, be not intended to limit protection scope of the present invention.
All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included in the present invention's
Within protection domain.
Claims (6)
1. an adjustable pipeline elasticity with limit function is propped up and is hung, it is characterised in that: described elasticity is propped up bull ladle and is included composite card
Hoop, backing plate (4), cushion block (5), intermediate mass (6), bidirectional helical sleeve (7), stop nut (8), elastic rubber layer (9), sleeve
And base (11) (10)；
Described compound clip be shaped as " Ω " shape, the plane at compound clip two ends is provided with bolt hole；
Being shaped as of described backing plate (4) is "T"-shaped, is divided into plane and cylinder two parts；The upper surface middle part of plane is provided with groove,
The two ends of plane are provided with bolt hole；Cylindrical one end is mutually perpendicular to plane, and the other end is provided with screw thread；
The upper surface of described cushion block (5) is arcwall face, and lower surface is provided with bulge-structure；
The hand of spiral that the two ends of described screw shell (7) are provided with screw thread and two ends is contrary, at the cylindrical of bidirectional helical sleeve (7)
All Middle face extend radially outward out two journal stirrups with through hole；
The bulge-structure of cushion block (5) lower surface and the groove fit of backing plate (4) upper surface, be combined inner surface and the cushion block of clip
(5) upper surface contacts with the outer surface of exterior line respectively, and will by connecting the bolt (12) of compound clip and backing plate (4)
Exterior line is locked；Threaded with the cylinder of backing plate (4) in one end of bidirectional helical sleeve (7), the other end and intermediate mass (6)
Threaded one end connect, and by the stop nut (8) at bidirectional helical sleeve (7) two ends, backing plate (4) and intermediate mass (6) are consolidated
Fixed；Elastic rubber layer (9) sulfuration that the other end of intermediate mass (6) is internal with being placed in sleeve (10) through the upper surface of sleeve (10)
Integral, elastic rubber layer (9) contacts with the inner surface of sleeve (10) and the upper surface of base (11), sleeve (10) and the end
Seat (11) is fixing to be connected.
A kind of adjustable pipeline elasticity with limit function the most according to claim 1 is propped up and is hung, it is characterised in that: described
Compound clip ecto-entad is integrated by rubber packing I (1), steel clip (2) and rubber packing II (3) sulfuration successively.
A kind of adjustable pipeline elasticity with limit function the most according to claim 2 is propped up and is hung, it is characterised in that: rubber
It is uniformly provided with groove in the axial direction of liner II (3) inner surface.
A kind of adjustable pipeline elasticity with limit function the most according to claim 1 is propped up and is hung, it is characterised in that: cushion block
(5) upper surface is uniformly provided with groove.
A kind of adjustable pipeline elasticity with limit function the most according to claim 1 is propped up and is hung, it is characterised in that: backing plate
(4) cylinder is provided with scale groove.
A kind of adjustable pipeline elasticity with limit function the most according to claim 1 is propped up and is hung, it is characterised in that: base
(11) through hole for observing elastic rubber layer (9) deformation it is provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610695429.6A CN106122597A (en) | 2016-08-19 | 2016-08-19 | A kind of adjustable pipeline elasticity with limit function is propped up and is hung |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610695429.6A CN106122597A (en) | 2016-08-19 | 2016-08-19 | A kind of adjustable pipeline elasticity with limit function is propped up and is hung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106122597A true CN106122597A (en) | 2016-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610695429.6A Pending CN106122597A (en) | 2016-08-19 | 2016-08-19 | A kind of adjustable pipeline elasticity with limit function is propped up and is hung |
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| CN (1) | CN106122597A (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355592A (en) * | 2017-09-07 | 2017-11-17 | 中国船舶重工集团公司第七〇九研究所 | A kind of wide range adjustable height pipe-support device |
| CN107435704A (en) * | 2017-09-07 | 2017-12-05 | 中国船舶重工集团公司第七〇九研究所 | A kind of large-scale vibration absorber limiter of the ship of mark with a scale |
| CN107503961A (en) * | 2017-07-21 | 2017-12-22 | 天津中隧通风机有限公司 | The large fan for tunnel being easily installed |
| CN108006323A (en) * | 2017-12-11 | 2018-05-08 | 张家港保税区泰德瑞尔轨道科技有限公司 | Pipe clamp with anti-theft feature |
| CN108060748A (en) * | 2017-11-17 | 2018-05-22 | 江苏壹鼎崮机电科技有限公司 | A kind of efficiently locking Fixed Tube-sheet Reboiler of novel sewer |
| CN108202308A (en) * | 2016-12-19 | 2018-06-26 | 核工业西南物理研究院 | A kind of adjustable circular waveguide supporting structure of three-dimensional |
| CN108443586A (en) * | 2018-03-30 | 2018-08-24 | 绿灵鸟（苏州）信息科技有限公司 | A kind of finishing circuit pipeline fixing device |
| CN108995784A (en) * | 2018-09-12 | 2018-12-14 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of deep sea equipment with string bag limiting device |
| CN109373054A (en) * | 2018-11-28 | 2019-02-22 | 中国船舶重工集团公司第七0四研究所 | It is flexibly supported from limit adjustable Low rigidity pipeline |
| CN110277871A (en) * | 2018-03-16 | 2019-09-24 | 德昌电机(深圳)有限公司 | The electric machine assembly and fuel oil pump assembly of bracket and the application bracket |
| CN110578836A (en) * | 2019-08-12 | 2019-12-17 | 清华大学 | Pipeline vibration isolation device capable of displaying vibration isolation frequency and adjusting balance position |
| CN110985755A (en) * | 2019-11-29 | 2020-04-10 | 海洋石油工程（青岛）有限公司 | Embrace card formula spring flange support |
| CN111322461A (en) * | 2020-03-13 | 2020-06-23 | 东南大学 | FRP intelligent pipeline support and implementation method thereof |
| CN112682578A (en) * | 2021-01-12 | 2021-04-20 | 福州大学 | Three-way shock-resistant shock absorber with adjustable height and capable of realizing small displacement limiting and working method thereof |
| CN113007447A (en) * | 2021-02-22 | 2021-06-22 | 中国核动力研究设计院 | Nuclear power pipeline damping hanger |
| CN113007450A (en) * | 2021-02-22 | 2021-06-22 | 中国核动力研究设计院 | Load-adjustable nuclear power pipeline vibration reduction support |
| CN113108130A (en) * | 2021-04-20 | 2021-07-13 | 北京航天发射技术研究所 | Pipeline support with stepless height adjustment function |
| CN113970014A (en) * | 2021-10-08 | 2022-01-25 | 渤海造船厂集团有限公司 | Integral pipeline elasticity gallows |
| CN114654424A (en) * | 2022-04-25 | 2022-06-24 | 广西玉柴机器股份有限公司 | Convenient pipe joint of dismantling goes up moment auxiliary assembly |
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Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108202308A (en) * | 2016-12-19 | 2018-06-26 | 核工业西南物理研究院 | A kind of adjustable circular waveguide supporting structure of three-dimensional |
| CN107503961A (en) * | 2017-07-21 | 2017-12-22 | 天津中隧通风机有限公司 | The large fan for tunnel being easily installed |
| CN107355592A (en) * | 2017-09-07 | 2017-11-17 | 中国船舶重工集团公司第七〇九研究所 | A kind of wide range adjustable height pipe-support device |
| CN107435704A (en) * | 2017-09-07 | 2017-12-05 | 中国船舶重工集团公司第七〇九研究所 | A kind of large-scale vibration absorber limiter of the ship of mark with a scale |
| CN108060748A (en) * | 2017-11-17 | 2018-05-22 | 江苏壹鼎崮机电科技有限公司 | A kind of efficiently locking Fixed Tube-sheet Reboiler of novel sewer |
| CN108006323A (en) * | 2017-12-11 | 2018-05-08 | 张家港保税区泰德瑞尔轨道科技有限公司 | Pipe clamp with anti-theft feature |
| CN110277871A (en) * | 2018-03-16 | 2019-09-24 | 德昌电机(深圳)有限公司 | The electric machine assembly and fuel oil pump assembly of bracket and the application bracket |
| CN108443586A (en) * | 2018-03-30 | 2018-08-24 | 绿灵鸟（苏州）信息科技有限公司 | A kind of finishing circuit pipeline fixing device |
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Application publication date: 20161116 |