CN107401634A - A kind of portable sewage treatment pipeline support frame - Google Patents

A kind of portable sewage treatment pipeline support frame Download PDF

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Publication number
CN107401634A
CN107401634A CN201710657906.4A CN201710657906A CN107401634A CN 107401634 A CN107401634 A CN 107401634A CN 201710657906 A CN201710657906 A CN 201710657906A CN 107401634 A CN107401634 A CN 107401634A
Authority
CN
China
Prior art keywords
fixedly connected
fixed case
support frame
sewage treatment
rotary shaft
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
Application number
CN201710657906.4A
Other languages
Chinese (zh)
Inventor
过蕊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201710657906.4A priority Critical patent/CN107401634A/en
Publication of CN107401634A publication Critical patent/CN107401634A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F16L3/00Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
    • F16L3/08Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
    • F16L3/10Supports 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 or more members engaging the pipe, cable or protective tubing
    • F16L3/1091Supports 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 or more members engaging the pipe, cable or protective tubing with two members, the two members being fixed to each other with fastening members on each side
    • 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
    • F16L3/00Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
    • F16L3/16Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets with special provision allowing movement of the pipe
    • F16L3/20Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets with special provision allowing movement of the pipe allowing movement in transverse direction
    • F16L3/205Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets with special provision allowing movement of the pipe allowing movement in transverse direction having supporting springs
    • F16L3/2056Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets with special provision allowing movement of the pipe allowing movement in transverse direction having supporting springs the axis of at least one spring being oblique or perpendicular to the direction of the movement of the pipe
    • 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
    • F16L3/00Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
    • F16L3/16Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets with special provision allowing movement of the pipe
    • F16L3/20Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets with special provision allowing movement of the pipe allowing movement in transverse direction
    • F16L3/215Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets with special provision allowing movement of the pipe allowing movement in transverse direction the movement being hydraulically or electrically controlled
    • F16L3/217Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets with special provision allowing movement of the pipe allowing movement in transverse direction the movement being hydraulically or electrically controlled hydraulically

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sewage (AREA)

Abstract

The invention discloses a kind of portable sewage treatment pipeline support frame, including fixed case, the top of the fixed chamber interior wall is rotatably connected to rotary shaft by fixed mount, fixed case and the side extended to outside fixed case are run through in one end of the rotary shaft, one end that the rotary shaft is located at outside fixed case is fixedly connected with rotating bar, and the bottom of rotating bar is rotatably connected to shake handle, one end that the rotary shaft is located inside fixed case is fixedly connected with the first angular wheel, and the bottom of the first angular wheel is engaged with the second angular wheel, screw axis are fixedly connected with the axle center of second angular wheel, the thread surface that the screw axis are located at outside fixed case is connected with drill bit, the present invention relates to water conservancy equipment technical field.The portable sewage treatment pipeline support frame, the support in three directions ensure that the stability of support frame, do not influenceed by installation environment, facilitate the installation of pipeline, and it is good to fix support effect.

Description

A kind of portable sewage treatment pipeline support frame
Technical field
The present invention relates to water conservancy equipment technical field, specially a kind of portable sewage treatment pipeline support frame.
Background technology
The topic of water pollution is constantly raised, and causes concern of the people to the water pollution order of severity, and the processing of sewage exists Most important in urban construction and life, in hydraulic engineering and sewage discharge are built, sewage treatment pipeline becomes must can not Few water conservancy projects, the installation and transport of sewage treatment pipeline be unable to do without the help of support frame.
In the installation process of sewage treatment pipeline, common support frame is very heavy, it has not been convenient to transport and movement, and by Located underground in the installation environment of sewage treatment pipeline, the weight of pipeline itself is again larger, and in general support frame is easy to because of mud Loosening and landform special of soil and generation the problems such as cause pipeline to be toppled over.
The content of the invention
In view of the shortcomings of the prior art, the invention provides a kind of portable sewage treatment pipeline support frame, solve Common support frame be inconvenient to transport and move and easily because the loosening of soil and landform it is special cause what pipeline toppled over to ask Topic.
To realize object above, the present invention is achieved by the following technical programs:A kind of portable sewage treatment pipeline With support frame, including fixed case, the top of the fixed chamber interior wall is rotatably connected to rotary shaft, the rotary shaft by fixed mount One end through fixed case and the side that extends to outside fixed case, company is fixed in one end that the rotary shaft be located at outside fixed case Rotating bar is connected to, and the bottom of rotating bar is rotatably connected to shake handle, and the rotary shaft is located at one end inside fixed case The first angular wheel is fixedly connected with, and the bottom of the first angular wheel is engaged with the second angular wheel, second taper Screw axis are fixedly connected with the axle center of gear, the bottom of the screw axis through fixed case and extends to the outside of fixed case, The thread surface that the screw axis are located at outside fixed case is connected with drill bit, and the both sides at the top of the fixed case have been fixedly connected with First hydraulic stem, and the top of hydraulic stem is fixedly connected with supporting plate, and being fixedly connected with pressure at the top of the supporting plate subtracts Device is shaken, and pipeline fixing device is fixedly connected with the top of pressure shock-absorbing device, the both sides of the supporting plate pass through movable part It is rotatably connected to the second hydraulic stem.
Preferably, the pressure shock-absorbing device includes bedplate, and the bottom of the bedplate is fixedly connected with supporting plate, and Press rods are fixedly connected with the top of bedplate, the top of the press rods is fixedly connected with pressure plare, the pressure plare and bottom Compression spring is fixedly connected between seat board and positioned at the surface of press rods.
Preferably, the pipeline fixing device includes housing, and the bottom of the housing is fixedly connected with pressure shock-absorbing device, and And slide bar is provided with housing, one end of the slide bar is fixedly connected with pipe fixing bracket, the both sides between two housings Connected by bolt thread.
Preferably, the bottom of second hydraulic stem is fixedly connected with support plate, and the bottom of support plate is fixedly connected There is tip.
Preferably, it is fixedly connected with spring between the pipe fixing bracket and housing and positioned at the surface of slide bar.
Preferably, the both sides of the fixed case bottom are rotatably connected to rotation wheel by fix bar.
Beneficial effect
The invention provides a kind of portable sewage treatment pipeline support frame.Possesses following beneficial effect:
(1), the portable sewage treatment pipeline support frame, rotating bar is fixedly connected with by one end of rotary shaft, and turn The bottom of lever is rotatably connected to shake handle, and one end of rotary shaft is engaged with the second angular wheel by the first angular wheel, And the second angular wheel is connected with drill bit by the thread surface of screw axis, the both sides of supporting plate are rotated by movable part to be connected Be connected to the second hydraulic stem, the bottom of the second hydraulic stem is fixedly connected with tip by support plate, allow support frame stablize consolidate Determine in place, and support frame bottom is pierced in soil, and the support in three directions ensure that the stability of support frame, Do not influenceed by installation environment, facilitate the installation of pipeline, pipeline is not produced inclination, fixed support effect is good.
(2), the portable sewage treatment pipeline support frame, be rotatably connected to rotation by the both sides of fixed case bottom Wheel, device is moved easily, is easy to the movement and installation of pipeline.
(3), the portable sewage treatment pipeline support frame, by being provided with slide bar on housing, one end of slide bar is fixed Pipe fixing bracket is connected with, is fixedly connected with spring between pipe fixing bracket and housing, passes through bolt spiral shell between two housings Line connects, and allows what sewage conduct fastened to be fixed on support frame, good fixing effect.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention;
Fig. 2 is the structural representation of pressure shock-absorbing device of the present invention;
Fig. 3 is the structural representation of inventive pipeline fixing device.
In figure:1 fixed case, 2 rotary shafts, 3 rotating bars, 4 shake handles, 5 first angular wheels, 6 fixed mounts, 7 second cones Shape gear, 8 screw axis, 9 drill bits, 10 first hydraulic stems, 11 supporting plates, 12 pressure shock-absorbing devices, 121 bedplates, 122, press rods, 123 pressure plares, 124 compression springs, 13 second hydraulic stems, 14 support plates, 15 tips, 16 pipeline fixing devices, 161 housings, 162 Slide bar, 163 pipe fixing brackets, 164 springs, 165 bolts, 17 fix bars, 18 rotate wheel.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made Embodiment, belong to the scope of protection of the invention.
Fig. 1-3 are referred to, the present invention provides a kind of technical scheme:A kind of portable sewage treatment pipeline support frame, bag Fixed case 1 is included, the top of the inwall of fixed case 1 is rotatably connected to rotary shaft 2 by fixed mount 6, and one end of rotary shaft 2 is through fixation Case 1 and the side extended to outside fixed case 1, one end that rotary shaft 2 is located at outside fixed case 1 are fixedly connected with rotating bar 3, and And the bottom of rotating bar 3 is rotatably connected to shake handle 4, one end that rotary shaft 2 is located inside fixed case 1 is fixedly connected with first Angular wheel 5, and the bottom of the first angular wheel 5 is engaged with the second angular wheel 7, consolidates at the axle center of the second angular wheel 7 Surely screw axis 8 are connected with, the bottom of screw axis 8 through fixed case 1 and extends to the outside of fixed case 1, and screw axis 8 are positioned at fixation Thread surface outside case 1 is connected with drill bit 9, and the both sides of the bottom of fixed case 1 are rotatably connected to rotation car by fix bar 17 Wheel 18, the both sides at the top of fixed case 1 have been fixedly connected with the first hydraulic stem 10, and the top of hydraulic stem 10 is fixedly connected with branch Fagging 11, the top of supporting plate 11 are fixedly connected with pressure shock-absorbing device 12, and pressure shock-absorbing device 12 includes bedplate 121, bedplate 121 bottom is fixedly connected with supporting plate 11, and the top of bedplate 121 is fixedly connected with press rods 122, press rods 122 Top be fixedly connected with pressure plare 123, between pressure plare 123 and bedplate 121 and positioned at press rods 122 surface fix connect Compression spring 124 is connected to, the top of pressure shock-absorbing device 12 is fixedly connected with pipeline fixing device 16, and pipeline fixing device 16 includes Housing 161, the bottom of housing 161 is fixedly connected with pressure shock-absorbing device 12, and slide bar 162, slide bar are provided with housing 161 162 one end is fixedly connected with pipe fixing bracket 163, between pipe fixing bracket 163 and housing 161 and positioned at the table of slide bar 162 Face is fixedly connected with spring 164, and the both sides between two housings 161 are threadedly coupled by bolt 165, the both sides of supporting plate 11 The second hydraulic stem 13 is rotatably connected to by movable part, the bottom of the second hydraulic stem 13 is fixedly connected with support plate 14, and The bottom of support plate 14 is fixedly connected with tip 15.
During work, sewage treatment pipeline is put into pipe fixing bracket 163, housing 161 is tightened by bolt 165, Gu Determine frame 163 can extrusion spring 164, pipeline is firmly secured in pipeline fixing device 16, selects suitable position, elongation the Two hydraulic stems 13, tip 15 is squeezed into soil by support plate 14, rotate shake handle 4 and rotary shaft 2 is driven by rotating bar 3 Rotate, rotary shaft 2 drives the second angular wheel 7 to rotate by the first angular wheel 5, so as to drive 9 turns of drill bit by screw axis 8 It is dynamic to pierce in soil, support frame is completed the effect of support, then drive supporting plate 11 and pipeline to fix by the first hydraulic stem 10 Device 16 rises or falls, and adjusts the position of sewage treatment pipeline, and the pressure shock-absorbing device 12 in supporting plate 11 can be Good damping and protective effect are played in transportation to pipeline.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.

Claims (6)

1. a kind of portable sewage treatment pipeline support frame, including fixed case(1), it is characterised in that:The fixed case(1)It is interior Pass through fixed mount at the top of wall(6)It is rotatably connected to rotary shaft(2), the rotary shaft(2)One end run through fixed case(1)And prolong Extend fixed case(1)Outside side, the rotary shaft(2)Positioned at fixed case(1)Outside one end is fixedly connected with rotating bar (3), and rotating bar(3)Bottom be rotatably connected to shake handle(4), the rotary shaft(2)Positioned at fixed case(1)Internal One end is fixedly connected with the first angular wheel(5), and the first angular wheel(5)Bottom be engaged with the second angular wheel(7), Second angular wheel(7)Axle center at be fixedly connected with screw axis(8), the screw axis(8)Bottom run through fixed case (1)And extend to fixed case(1)Outside, the screw axis(8)Positioned at fixed case(1)Outside thread surface is connected with drill bit (9), the fixed case(1)The both sides at top have been fixedly connected with the first hydraulic stem(10), and hydraulic stem(10)Top consolidate Surely it is connected with supporting plate(11), the supporting plate(11)Top be fixedly connected with pressure shock-absorbing device(12), and pressure shock-absorbing Device(12)Top be fixedly connected with pipeline fixing device(16), the supporting plate(11)Both sides pass through movable part rotate connect It is connected to the second hydraulic stem(13).
A kind of 2. portable sewage treatment pipeline support frame according to claim 1, it is characterised in that:The pressure subtracts Shake device(12)Including bedplate(121), the bedplate(121)Bottom and supporting plate(11)It is fixedly connected, and bedplate (121)Top be fixedly connected with press rods(122), the press rods(122)Top be fixedly connected with pressure plare(123), The pressure plare(123)And bedplate(121)Between and be located at press rods(122)Surface be fixedly connected with compression spring (124).
A kind of 3. portable sewage treatment pipeline support frame according to claim 1, it is characterised in that:The pipeline is consolidated Determine device(16)Including housing(161), the housing(161)Bottom and pressure shock-absorbing device(12)It is fixedly connected, and housing (161)On be provided with slide bar(162), the slide bar(162)One end be fixedly connected with pipe fixing bracket(163), described in two Housing(161)Between both sides pass through bolt(165)Threaded connection.
A kind of 4. portable sewage treatment pipeline support frame according to claim 1, it is characterised in that:Second liquid Depression bar(13)Bottom be fixedly connected with support plate(14), and support plate(14)Bottom be fixedly connected with tip(15).
A kind of 5. portable sewage treatment pipeline support frame according to claim 3, it is characterised in that:The pipeline is consolidated Determine frame(163)With housing(161)Between and be located at slide bar(162)Surface be fixedly connected with spring(164).
A kind of 6. portable sewage treatment pipeline support frame according to claim 1, it is characterised in that:The fixed case (1)The both sides of bottom pass through fix bar(17)It is rotatably connected to rotation wheel(18).
CN201710657906.4A 2017-08-03 2017-08-03 A kind of portable sewage treatment pipeline support frame Pending CN107401634A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710657906.4A CN107401634A (en) 2017-08-03 2017-08-03 A kind of portable sewage treatment pipeline support frame

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710657906.4A CN107401634A (en) 2017-08-03 2017-08-03 A kind of portable sewage treatment pipeline support frame

Publications (1)

Publication Number Publication Date
CN107401634A true CN107401634A (en) 2017-11-28

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CN201710657906.4A Pending CN107401634A (en) 2017-08-03 2017-08-03 A kind of portable sewage treatment pipeline support frame

Country Status (1)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107956927A (en) * 2017-12-11 2018-04-24 王红军 A kind of petroleum pipeline support device
CN107990054A (en) * 2017-12-11 2018-05-04 王红军 A kind of petroleum pipeline fixing device of stable connection
CN108036113A (en) * 2017-12-15 2018-05-15 山东金城建设有限公司 Concrete pump pipe vibration damping fixed system
CN108869877A (en) * 2018-09-26 2018-11-23 张丽聪 A kind of protection type auxiliary device that natural gas line is laid with
CN109340844A (en) * 2018-09-29 2019-02-15 合肥佳粮机械科技有限公司 A kind of integrated kitchen range oil-stain-preventing leak device
CN109827007A (en) * 2019-01-28 2019-05-31 江西理工大学 Fixed equipment is used in a kind of laying of heating and ventilating pipeline
CN111828059A (en) * 2020-07-28 2020-10-27 华北水利水电大学 Automatic protection support equipment for gravel stratum excavation construction

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0600616A1 (en) * 1992-11-05 1994-06-08 Imi Marston Limited Slide bearing
CN204554072U (en) * 2015-03-17 2015-08-12 张广亮 A kind of civil building Pipe installing auxiliary bracket
CN105134848A (en) * 2014-03-29 2015-12-09 金丽秋 Method for preventing spring from being damaged by torsional compression
CN205155344U (en) * 2015-10-30 2016-04-13 四川信息职业技术学院 Pipeline bearing structure
CN205401953U (en) * 2016-03-07 2016-07-27 江苏新海石化有限公司 Oil pipe way fixing base is taken out to oil in pit
CN105909870A (en) * 2016-06-01 2016-08-31 江苏大浪电气制造有限公司 Stable tray type cable support
CN205806701U (en) * 2016-05-30 2016-12-14 纪文睿 A kind of oil pipeline fixedly adjustable joint bearing
CN206175829U (en) * 2016-11-03 2017-05-17 徐志刚 Pipeline support frame for civil construction
CN206181757U (en) * 2016-11-08 2017-05-24 白洪昌 Mobilizable tree planting earth boring machine of drill bit
CN206206785U (en) * 2016-11-29 2017-05-31 新昌县双彩乡亚飞轴承厂 A kind of Pipe installing support frame
CN106869793A (en) * 2017-04-20 2017-06-20 陈海永 It is a kind of be easy to fixation build work perforating device under water

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0600616A1 (en) * 1992-11-05 1994-06-08 Imi Marston Limited Slide bearing
CN105134848A (en) * 2014-03-29 2015-12-09 金丽秋 Method for preventing spring from being damaged by torsional compression
CN204554072U (en) * 2015-03-17 2015-08-12 张广亮 A kind of civil building Pipe installing auxiliary bracket
CN205155344U (en) * 2015-10-30 2016-04-13 四川信息职业技术学院 Pipeline bearing structure
CN205401953U (en) * 2016-03-07 2016-07-27 江苏新海石化有限公司 Oil pipe way fixing base is taken out to oil in pit
CN205806701U (en) * 2016-05-30 2016-12-14 纪文睿 A kind of oil pipeline fixedly adjustable joint bearing
CN105909870A (en) * 2016-06-01 2016-08-31 江苏大浪电气制造有限公司 Stable tray type cable support
CN206175829U (en) * 2016-11-03 2017-05-17 徐志刚 Pipeline support frame for civil construction
CN206181757U (en) * 2016-11-08 2017-05-24 白洪昌 Mobilizable tree planting earth boring machine of drill bit
CN206206785U (en) * 2016-11-29 2017-05-31 新昌县双彩乡亚飞轴承厂 A kind of Pipe installing support frame
CN106869793A (en) * 2017-04-20 2017-06-20 陈海永 It is a kind of be easy to fixation build work perforating device under water

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107956927A (en) * 2017-12-11 2018-04-24 王红军 A kind of petroleum pipeline support device
CN107990054A (en) * 2017-12-11 2018-05-04 王红军 A kind of petroleum pipeline fixing device of stable connection
CN107990054B (en) * 2017-12-11 2020-11-17 嘉兴市国龙石油化工股份有限公司 Connect firm petroleum pipeline fixing device
CN108036113A (en) * 2017-12-15 2018-05-15 山东金城建设有限公司 Concrete pump pipe vibration damping fixed system
CN108036113B (en) * 2017-12-15 2019-10-08 山东金城建设有限公司 Concrete pump pipe vibration damping fixed system
CN108869877A (en) * 2018-09-26 2018-11-23 张丽聪 A kind of protection type auxiliary device that natural gas line is laid with
CN108869877B (en) * 2018-09-26 2020-06-05 沛县港华燃气有限公司 Protection type auxiliary device that natural gas line laid
CN109340844A (en) * 2018-09-29 2019-02-15 合肥佳粮机械科技有限公司 A kind of integrated kitchen range oil-stain-preventing leak device
CN109827007A (en) * 2019-01-28 2019-05-31 江西理工大学 Fixed equipment is used in a kind of laying of heating and ventilating pipeline
CN111828059A (en) * 2020-07-28 2020-10-27 华北水利水电大学 Automatic protection support equipment for gravel stratum excavation construction

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Application publication date: 20171128

RJ01 Rejection of invention patent application after publication