CN112524340A - Petroleum pipeline supports fixing device - Google Patents

Petroleum pipeline supports fixing device Download PDF

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Publication number
CN112524340A
CN112524340A CN202011383566.9A CN202011383566A CN112524340A CN 112524340 A CN112524340 A CN 112524340A CN 202011383566 A CN202011383566 A CN 202011383566A CN 112524340 A CN112524340 A CN 112524340A
Authority
CN
China
Prior art keywords
supporting
fixedly connected
support
petroleum pipeline
fixing device
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
CN202011383566.9A
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Chinese (zh)
Inventor
刘铭洋
张玉莲
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.)
Zhejiang Ocean University ZJOU
Original Assignee
Zhejiang Ocean University ZJOU
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 Zhejiang Ocean University ZJOU filed Critical Zhejiang Ocean University ZJOU
Priority to CN202011383566.9A priority Critical patent/CN112524340A/en
Publication of CN112524340A publication Critical patent/CN112524340A/en
Pending legal-status Critical Current

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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
    • 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
    • F16L3/1033Supports 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 engaging the pipe, cable or tubing, the two members being joined only on one side of the pipe
    • F16L3/1041Supports 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 engaging the pipe, cable or tubing, the two members being joined only on one side of the pipe and being adapted to accommodate pipes of various diameters
    • 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

Abstract

The invention discloses a petroleum pipeline supporting and fixing device, and relates to the technical field of pipeline supporting. The novel support bar comprises a bottom plate, two sliding rods are symmetrically and slidably connected to the inner walls of hollow support bars, one end, located outside the hollow support bars, of each sliding rod is fixedly connected with a support ring, a cross shaft is rotatably connected between the inner walls of every two adjacent support rings, rotating rings are symmetrically and rotatably matched with the peripheral sides of the cross shafts, a support seat is hinged between the upper ends of the support rods through a hinged support, an internal thread support column is fixedly connected to the middle of the upper surface of the bottom plate, and a thread support rod is. The invention has the advantages that through the design of the hollow support bar, the slide bar, the cross shaft, the support bar, the internal thread strut, the thread strut and the limiting spring, the installation height of the pipeline is convenient to adjust, the structure is simple, the installation efficiency of the pipeline is improved, and the problems that the height of the petroleum pipeline is inconvenient to adjust, the fixation is not stable enough and the installation efficiency is reduced by the conventional petroleum pipeline support device are solved.

Description

Petroleum pipeline supports fixing device
Technical Field
The invention belongs to the technical field of pipeline supporting, and particularly relates to a petroleum pipeline supporting and fixing device.
Background
The petroleum is a viscous and dark brown liquid, the upper part of the crust is stored with the petroleum, the main component is the mixture of various alkanes, cyclanes and aromatic hydrocarbons, the oil formation mechanism of the petroleum has two theories of biological deposition and oil change and petrochemical oil, the former is widely accepted, the petroleum is considered to be formed by the long evolution of organisms in the ancient oceans or lakes, and belongs to the biological deposition and oil change, and the petroleum cannot be regenerated; the latter is thought to be the generation of petroleum from its own carbon within the earth's crust, which is biologically unrelated and renewable, and petroleum is used primarily as fuel and gasoline, as well as a feedstock for many chemical industry products such as solutions, fertilizers, pesticides, and plastics. The oil pipeline is composed of oil pipe and its accessories, and it is equipped with corresponding oil pump set according to the need of technological process, and designed and installed into a complete pipeline system for completing the tasks of oil receiving, unloading and transferring. During transportation of the petroleum pipeline, the petroleum pipeline is usually laid off the ground, and therefore, the petroleum pipeline support is required to be arranged at intervals to support the petroleum pipeline during the laying process of the petroleum pipeline. The pipe support is used wherever a pipe is laid, and is also called a pipe support, a pipe portion, or the like. The pipe support is used as a supporting structure of the pipeline, and the pipe support is divided into a fixed structure and a movable structure according to the running performance and the arrangement requirement of the pipeline. The location of the fixing point is a fixing support, the pipe support and the pipeline support can not generate relative displacement, and the deformation of the fixed pipe support after being stressed is small compared with the deformation value of the pipeline compensator, because the pipe support has enough rigidity. During oil transportation, a large number of oil pipes are used, which are either buried under the ground or erected at a certain height from the ground.
However, the height of the pipeline often needs to be adjusted in the installation process of the petroleum pipeline, the height of the petroleum pipeline is inconvenient to adjust by the existing petroleum pipeline supporting device, and the fixing is not stable enough, so that the installation of the petroleum pipeline is affected, and the installation efficiency is reduced.
Disclosure of Invention
The invention aims to provide a petroleum pipeline supporting and fixing device, which solves the problems that the height of a petroleum pipeline is inconvenient to adjust, the fixing is not stable enough, the installation of the petroleum pipeline is influenced and the installation efficiency is reduced by the design of a hollow supporting bar, a sliding rod, a transverse shaft, a supporting bar, an internal thread strut, a threaded supporting bar and a limiting spring.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a petroleum pipeline supporting and fixing device, which comprises a bottom plate;
the upper surface of the bottom plate is symmetrically and fixedly connected with two hollow support bars, the inner walls of the hollow support bars are symmetrically and slidably connected with two slide bars, one end of each slide bar, which is positioned outside the hollow support bar, is fixedly connected with a support ring, a cross shaft is rotatably connected between the inner walls of every two adjacent support rings, a rotating ring is symmetrically and rotatably matched with the peripheral side of the cross shaft, the top of each rotating ring is fixedly connected with a support bar, and a support seat is hinged between the upper ends of the support bars through;
the middle position of bottom plate upper surface is fixedly connected with the internal thread pillar, internal thread pillar inner wall threaded connection has screw thread branch, screw thread branch upper end and supporting seat lower surface normal running fit.
Further, the peripheral side face of the threaded support rod is fixedly connected with a first adjusting nut, and the upper surface of the first adjusting nut is in running fit with the lower surface of the support seat.
Further, two the slide bar is located fixedly connected with spacing spring between the inside one end of cavity support bar, the equal fixedly connected with stopper in cross axle both ends, a stopper side contacts with the support ring side.
Furthermore, a plurality of slide holes are symmetrically formed in one surface of the supporting seat, slide blocks are arranged on the inner walls of the slide holes in a sliding fit mode, a transverse plate is fixedly connected between the upper surfaces of the adjacent two slide blocks, the lower surface of the transverse plate is in sliding fit with the upper surface of the supporting seat, and a hoop is fixedly connected to the upper surface of the transverse plate.
Furthermore, the lower surface of the supporting seat is in running fit with a threaded suspender, the peripheral side of the threaded suspender is in threaded connection with a movable block, two opposite side surfaces of the movable block are hinged with inclined supporting rods through hinged supports, and one end of each inclined supporting rod is hinged with one side surface of the sliding block through a hinged support.
Further, the threaded suspender is positioned on one side of the threaded support rod, and the lower end of the threaded suspender is fixedly connected with a second adjusting nut.
Furthermore, the inner wall of the hoop is fixedly connected with a cushion rubber pad.
Furthermore, the side face of the bottom plate is fixedly connected with an ear plate, and a ground nail penetrates through one surface of the ear plate.
The invention has the following beneficial effects:
the invention adopts the design of the hollow support bar, the slide bar, the cross shaft, the support bar, the internal thread strut, the thread strut and the limit spring, manually rotates the thread strut through the first adjusting nut to enable the thread strut to ascend or descend in the internal thread strut so as to drive the support seat to ascend or descend and adjust the height of the two hoops, simultaneously, the support seat drives the rotating ring to rotate on the cross shaft through the support bar, the cross shaft drives the slide bar to horizontally slide in the hollow support bar so as to enable the support bar to stably support the support seat, the installation height of the pipeline is conveniently adjusted, then, manually rotates the thread suspender through the second adjusting nut, the thread suspender drives the movable block to ascend, the movable block drives the slide block to slide in the sliding hole of the support seat through the inclined stay bar, the slide block drives the two hoops to clamp and fix the pipeline, the installation work of the pipeline is, the problem of the inconvenient height of adjusting petroleum pipeline of current petroleum pipeline strutting arrangement to fixed not stable enough influences the installation of petroleum pipeline, reduces the installation effectiveness is avoided.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a petroleum pipeline supporting and fixing device;
FIG. 2 is a schematic view of the bottom view of FIG. 1;
FIG. 3 is a front view of the structure of FIG. 1;
FIG. 4 is a top view of the structure of FIG. 1;
FIG. 5 is a schematic view of the interior of the hollow support bar;
in the drawings, the components represented by the respective reference numerals are listed below:
1-bottom plate, 101-hollow supporting bar, 102-sliding bar, 103-supporting ring, 104-transverse shaft, 105-rotating ring, 106-supporting bar, 107-supporting seat, 108-internal thread supporting column, 109-threaded supporting bar, 110-first adjusting nut, 111-limiting spring, 112-limiting block, 113-sliding hole, 114-sliding block, 115-transverse plate, 116-hoop, 117-threaded hanging rod, 118-movable block, 119-diagonal supporting bar, 120-second adjusting nut and 121-ear plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention is a petroleum pipeline supporting and fixing device, which comprises a bottom plate 1;
the upper surface of the bottom plate 1 is symmetrically and fixedly connected with two hollow supporting bars 101, the inner walls of the hollow supporting bars 101 are symmetrically and slidably connected with two sliding rods 102, one ends of the sliding rods 102, which are positioned outside the hollow supporting bars 101, are fixedly connected with supporting rings 103, the inner walls of the two adjacent supporting rings 103 are rotatably connected with a cross shaft 104, the peripheral side of the cross shaft 104 is symmetrically and rotatably matched with a rotating ring 105, the top of the rotating ring 105 is fixedly connected with a supporting rod 106, a supporting seat 107 is hinged between the upper ends of the supporting rods 106 through a hinged support, and the supporting;
the middle position fixed connection of bottom plate 1 upper surface has internal thread pillar 108, and internal thread pillar 108 inner wall threaded connection has screw thread branch 109, screw thread branch 109 upper end and supporting seat 107 lower surface normal running fit, and screw thread branch 109 can adjust the height of supporting seat 107, can play the supporting role to supporting seat 107 again.
As shown in fig. 2-3, a first adjusting nut 110 is fixedly connected to the peripheral side of the threaded support rod 109, and the upper surface of the first adjusting nut 110 is rotatably engaged with the lower surface of the support seat 107.
As shown in fig. 1 and 5, a limiting spring 111 is fixedly connected between one ends of the two slide rods 102 inside the hollow supporting bar 101 to prevent the two slide rods 102 from being separated from the hollow supporting bar 101, two ends of the transverse shaft 104 are both fixedly connected with limiting blocks 112, and one side of each limiting block 112 contacts with one side of the supporting ring 103 to prevent the transverse shaft 104 from being separated from the supporting ring 103.
As shown in fig. 1-2, a plurality of sliding holes 113 are symmetrically formed in one surface of the supporting seat 107, sliding blocks 114 are slidably fitted to inner walls of the sliding holes 113, a transverse plate 115 is fixedly connected between upper surfaces of two adjacent sliding blocks 114, a lower surface of the transverse plate 115 is slidably fitted to an upper surface of the supporting seat 107, and a hoop 116 is fixedly connected to an upper surface of the transverse plate 115.
As shown in fig. 1-2, a threaded hanger rod 117 is rotatably fitted to the lower surface of the supporting seat 107, a movable block 118 is connected to the peripheral side of the threaded hanger rod 117 through threads, two opposite side surfaces of the movable block 118 are hinged to an inclined strut 119 through a hinged support, one end of the inclined strut 119 is hinged to the side surface of the sliding block 114 through a hinged support, the threaded hanger rod 117 is manually rotated through a second adjusting nut 120, the threaded hanger rod 117 drives the movable block 118 to ascend, the movable block 118 drives the sliding block 114 to slide in the sliding hole 113 of the supporting seat 107 through the inclined strut 119, so that the sliding block 114 drives the two hoops 116 to clamp and fix the pipeline, and the pipeline.
As shown in fig. 2-3, the threaded hanger bar 117 is located at one side of the threaded support bar 109, and a second adjusting nut 120 is fixedly connected to the lower end of the threaded hanger bar 117.
As shown in fig. 1-2, a cushion rubber pad is fixedly connected to an inner wall of the hoop 116 to prevent the hoop 116 from clamping and damaging the pipeline.
As shown in fig. 1-2, the side of the bottom plate 1 is fixedly connected with an ear plate 121, a ground nail penetrates through one surface of the ear plate 121, and the bottom plate 1 is fixed on the ground through the ground nail of the ear plate 121.
The working principle of the embodiment is as follows: when the pipeline installation device is used, the bottom plate 1 is fixed on the ground through the ground nail of the lug plate 121, the threaded support rod 109 is manually rotated through the first adjusting nut 110, the threaded support rod 109 is enabled to ascend or descend in the internal threaded support column 108, so that the support seat 107 is driven to ascend or descend, the heights of the two hoops 116 are adjusted, meanwhile, the support seat 107 drives the rotating ring 105 to rotate on the transverse shaft 104 through the support rod 106, the transverse shaft 104 drives the slide rod 102 to horizontally slide in the hollow support bar 101, the support rod 106 stably supports the support seat 107, the installation height of a pipeline is conveniently adjusted, then, the threaded hanger rod 117 is manually rotated through the second adjusting nut 120, the threaded hanger rod 117 drives the movable block 118 to ascend, the movable block 118 drives the sliding block 114 to slide in the sliding hole 113 of the support seat 107 through the inclined support rod 119, the sliding block 114 drives the two hoops 116 to clamp, the installation efficiency of the pipeline is improved, the height of the petroleum pipeline which is inconvenient to adjust by the existing petroleum pipeline supporting device is avoided, the petroleum pipeline is fixed and not stable enough, the installation of the petroleum pipeline is influenced, and the installation efficiency is reduced.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (8)

1. A petroleum pipeline supporting and fixing device comprises a bottom plate (1); the method is characterized in that:
the upper surface of the bottom plate (1) is symmetrically and fixedly connected with two hollow supporting bars (101), the inner walls of the hollow supporting bars (101) are symmetrically and slidably connected with two sliding rods (102), one ends of the sliding rods (102) positioned outside the hollow supporting bars (101) are fixedly connected with supporting rings (103), a transverse shaft (104) is rotatably connected between the inner walls of two adjacent supporting rings (103), rotating rings (105) are symmetrically and rotatably matched on the peripheral sides of the transverse shaft (104), the top of each rotating ring (105) is fixedly connected with a supporting rod (106), and a supporting seat (107) is hinged between the upper ends of the supporting rods (106) through a hinged support;
the middle position fixed connection of bottom plate (1) upper surface has internal thread pillar (108), internal thread pillar (108) inner wall threaded connection has screw thread branch (109), screw thread branch (109) upper end and supporting seat (107) lower surface normal running fit.
2. A petroleum pipeline supporting and fixing device as claimed in claim 1, wherein a first adjusting nut (110) is fixedly connected to the peripheral side surface of the threaded strut (109), and the upper surface of the first adjusting nut (110) is rotatably matched with the lower surface of the supporting seat (107).
3. A petroleum pipeline supporting and fixing device as claimed in claim 1, wherein a limiting spring (111) is fixedly connected between one ends of the two sliding rods (102) located inside the hollow supporting bar (101), limiting blocks (112) are fixedly connected to both ends of the transverse shaft (104), and one side surface of each limiting block (112) is in contact with one side surface of the supporting ring (103).
4. A petroleum pipeline supporting and fixing device as claimed in claim 1, wherein a plurality of sliding holes (113) are symmetrically formed in one surface of the supporting base (107), sliding blocks (114) are slidably fitted in the inner walls of the sliding holes (113), a transverse plate (115) is fixedly connected between the upper surfaces of two adjacent sliding blocks (114), the lower surface of the transverse plate (115) is slidably fitted with the upper surface of the supporting base (107), and a hoop (116) is fixedly connected to the upper surface of the transverse plate (115).
5. A petroleum pipeline supporting and fixing device as claimed in claim 4, wherein a threaded suspender (117) is rotatably fitted on the lower surface of the supporting seat (107), a movable block (118) is screwed on the peripheral side of the threaded suspender (117), two opposite sides of the movable block (118) are hinged with inclined supporting rods (119) through hinged seats, and one end of each inclined supporting rod (119) is hinged with the side of the sliding block (114) through a hinged seat.
6. A petroleum pipeline supporting and fixing device as claimed in claim 5, wherein the threaded hanger bar (117) is located at one side of the threaded strut (109), and a second adjusting nut (120) is fixedly connected to the lower end of the threaded hanger bar (117).
7. A petroleum pipeline supporting and fixing device as claimed in claim 4, wherein a rubber cushion pad is fixedly connected to the inner wall of the hoop (116).
8. A petroleum pipeline supporting and fixing device as claimed in claim 1, wherein the bottom plate (1) is fixedly connected with an ear plate (121) at the side, and a ground nail penetrates through one surface of the ear plate (121).
CN202011383566.9A 2020-12-01 2020-12-01 Petroleum pipeline supports fixing device Pending CN112524340A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011383566.9A CN112524340A (en) 2020-12-01 2020-12-01 Petroleum pipeline supports fixing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011383566.9A CN112524340A (en) 2020-12-01 2020-12-01 Petroleum pipeline supports fixing device

Publications (1)

Publication Number Publication Date
CN112524340A true CN112524340A (en) 2021-03-19

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116557673A (en) * 2023-04-12 2023-08-08 江苏新杜湖技术工程有限公司 Petroleum pipeline support frame with anticollision structure

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9605773B1 (en) * 2015-12-28 2017-03-28 Hunter Highway, Inc. Adjustable pipe support system
CN206700341U (en) * 2017-01-04 2017-12-05 金中华 A kind of nursing mechanical arm
CN108331975A (en) * 2018-04-02 2018-07-27 盐城市锦瑞石油机械有限公司 A kind of adjustable support for petroleum pipeline installation
CN110274091A (en) * 2019-06-04 2019-09-24 南通赛威染整科技有限公司 Petroleum transportation pipeline connects support device
CN209743965U (en) * 2019-01-18 2019-12-06 天津恒泰渤园科技发展有限公司 Monitoring camera mounting structure with shock-absorbing function
CN209977447U (en) * 2019-04-30 2020-01-21 浙江银恒抗震支架有限公司 Antidetonation support convenient to installation
CN211010173U (en) * 2019-09-17 2020-07-14 刘朋超 Fixing device for coal mine ventilation pipe fitting

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9605773B1 (en) * 2015-12-28 2017-03-28 Hunter Highway, Inc. Adjustable pipe support system
CN206700341U (en) * 2017-01-04 2017-12-05 金中华 A kind of nursing mechanical arm
CN108331975A (en) * 2018-04-02 2018-07-27 盐城市锦瑞石油机械有限公司 A kind of adjustable support for petroleum pipeline installation
CN209743965U (en) * 2019-01-18 2019-12-06 天津恒泰渤园科技发展有限公司 Monitoring camera mounting structure with shock-absorbing function
CN209977447U (en) * 2019-04-30 2020-01-21 浙江银恒抗震支架有限公司 Antidetonation support convenient to installation
CN110274091A (en) * 2019-06-04 2019-09-24 南通赛威染整科技有限公司 Petroleum transportation pipeline connects support device
CN211010173U (en) * 2019-09-17 2020-07-14 刘朋超 Fixing device for coal mine ventilation pipe fitting

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116557673A (en) * 2023-04-12 2023-08-08 江苏新杜湖技术工程有限公司 Petroleum pipeline support frame with anticollision structure

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Application publication date: 20210319

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