CN114603501B - Pipe centering device in casing pipe and construction method thereof - Google Patents

Pipe centering device in casing pipe and construction method thereof Download PDF

Info

Publication number
CN114603501B
CN114603501B CN202210178990.2A CN202210178990A CN114603501B CN 114603501 B CN114603501 B CN 114603501B CN 202210178990 A CN202210178990 A CN 202210178990A CN 114603501 B CN114603501 B CN 114603501B
Authority
CN
China
Prior art keywords
sleeve
pipe
telescopic rod
sliding
reference plate
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.)
Active
Application number
CN202210178990.2A
Other languages
Chinese (zh)
Other versions
CN114603501A (en
Inventor
杨灿
黄学庆
冯振川
魏元君
董旭超
袁天乐
夏欢
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.)
China Construction Eighth Engineering Division Co Ltd
Original Assignee
China Construction Eighth Engineering Division Co Ltd
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 China Construction Eighth Engineering Division Co Ltd filed Critical China Construction Eighth Engineering Division Co Ltd
Priority to CN202210178990.2A priority Critical patent/CN114603501B/en
Publication of CN114603501A publication Critical patent/CN114603501A/en
Application granted granted Critical
Publication of CN114603501B publication Critical patent/CN114603501B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B11/00Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14Conveying or assembling building elements
    • E04G21/16Tools or apparatus
    • E04G21/18Adjusting tools; Templates
    • E04G21/1841Means for positioning building parts or elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

The invention discloses a pipe centering device in a sleeve and a construction method thereof, wherein after the pipe centering device is installed at the end part of the sleeve, the intersection point of three adjusting holes of a datum plate coincides with the axis of the sleeve, and when the position of a sliding rod is adjusted, a plurality of indicating rods arranged on the telescopic rod assembly are always positioned on a circle taking the axis of the sleeve as the center of a circle through two telescopic rod assemblies which synchronously and proportionally telescopic, so when the indicating rods are simultaneously attached to the inner wall of the pipe to be installed, the pipe is coaxially arranged in the sleeve, namely the pipe is centered in the sleeve. The invention solves the problem that in the working condition that the pipe is arranged in the sleeve in the middle, constructors generally observe the pipe installed in the sleeve by experience and naked eyes, and position deviation is easy to occur.

Description

Pipe centering device in casing pipe and construction method thereof
Technical Field
The invention relates to the technical field of building construction, in particular to a pipe centering device in a sleeve and a construction method thereof.
Background
In the building construction process, the working condition that the pipe is arranged in the sleeve in the middle is generally met, and constructors generally observe the pipe in the sleeve by experience and naked eyes, so that deviation occurs in the position where the pipe is arranged easily, subsequent reworking is required, the construction efficiency is reduced, and the construction cost is increased.
Disclosure of Invention
In order to overcome the defects existing in the prior art, the pipe centering device in the sleeve and the construction method thereof are provided at present, so that the problem that the position deviation easily occurs when a constructor generally observes the pipe installed in the sleeve by experience and naked eyes in the working condition that the pipe is centered in the sleeve is solved.
To achieve the above object, there is provided a pipe centering device in a casing, comprising:
the reference plate is detachably arranged at the end part of the sleeve through the supporting rod, the reference plate is arranged opposite to the end surface of the sleeve, the reference plate is provided with three strip-shaped adjusting holes, the adjusting holes are arranged along the radial direction of the sleeve, two adjusting holes are arranged in the same direction, and the third adjusting hole is perpendicular to the two adjusting holes;
The positioning frame is arranged on the inner side of the reference plate and comprises two telescopic rod assemblies and sliding rods, wherein the two telescopic rod assemblies and the sliding rods synchronously stretch in equal proportion, one sliding rod is arranged in each of three adjusting holes in a sliding mode, one ends of the two telescopic rod assemblies are connected and are vertically arranged, the sliding rod in each of the third adjusting holes is connected to the connecting position of one ends of the two telescopic rod assemblies, and the other ends of the two telescopic rod assemblies are connected to sliding pieces in the two adjusting holes respectively; and
The telescopic rod comprises a plurality of indicating rods, wherein one side, far away from the sliding rods, of each telescopic rod assembly is connected with the plurality of indicating rods, and the indicating rods correspond to the positions of the sliding rods one by one.
Further, scale marks are arranged on the outer edges of the adjusting holes, and the scale marks are arranged along the length direction of the adjusting holes.
Further, the telescopic link assembly includes:
The first ends of the guide rods of the two telescopic rod assemblies are connected together and are vertically arranged, and the sliding rod in the third adjusting hole is connected to the joint of the first ends of the guide rods of the two telescopic rod assemblies; and
The second end of the guide rod is movably sleeved with the sliding sleeve, and the sliding rods in the two adjusting holes are respectively connected with the sliding sleeves of the two telescopic rod assemblies.
Further, the reference plate is in the shape of an isosceles right triangle.
Further, the struts are arranged along the axial direction of the sleeve, the number of the struts is multiple, the struts are arranged at equal intervals along the circumferential direction of the sleeve, and the struts are arranged at the corners of the reference plate.
Further, one end of the supporting rod is connected to the inner side of the reference plate, the other end of the supporting rod is connected with a clamping rod, a clamping space is formed between the clamping rod and the outer side of the supporting rod, and the pipe wall of the sleeve is detachably embedded in the clamping space.
Further, the length of the bottom edge of the reference plate is adapted to the inner diameter of the sleeve, and a detecting ruler is rotatably connected to the midpoint of the bottom edge of the reference plate.
Further, the bottom edge of the reference plate is connected with a hanging ring, a perforation is formed in the end portion of the detection ruler, and the hanging ring is movably arranged in the perforation in a penetrating mode.
Further, the indication rod is an elastic rod.
The invention provides a construction method of a pipe centering device in a sleeve, which comprises the following steps:
Arranging a pipe to be installed in the sleeve;
The reference plate is detachably arranged at the end part of the sleeve through the support rod, so that a plurality of indication rods are inserted into ports at one end of the pipe;
the sliding rod in the third adjusting hole slides, the two telescopic rod assemblies synchronously stretch in equal proportion, and the positions of the tubes are adjusted simultaneously, so that a plurality of indicating rods are attached to the inner wall of the tubes simultaneously, and the tubes and the sleeves are coaxially arranged.
The pipe centering device in the sleeve has the beneficial effects that when the pipe is centrally installed in the sleeve, the positioning precision and the measuring efficiency of the pipe are improved, the coincidence point of the center of the sleeve and the center of the pipe is quickly realized, and the installation efficiency and the installation quality of the pipe are further improved.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:
Fig. 1 is a schematic structural view of a pipe centering device in a casing according to an embodiment of the present invention.
Fig. 2 is a top view of a tubing centering device in a casing according to an embodiment of the present invention.
Fig. 3 is a schematic view of the upper part of the pipe centering device in the casing according to the embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a positioning frame according to an embodiment of the invention.
Fig. 5 is a schematic view of the structure of the end of the measuring tape according to the embodiment of the present invention.
Fig. 6 is a schematic view showing a use state of the pipe centering device in the casing according to the embodiment of the present invention.
Fig. 7 is a schematic view of the structure of the back side of the sleeve according to an embodiment of the present invention.
Fig. 8 is a top view of a sleeve according to an embodiment of the present invention.
Detailed Description
The application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be noted that, for convenience of description, only the portions related to the application are shown in the drawings.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 1 to 8, the present invention provides a pipe centering device in a casing, comprising: a reference plate 1, a positioning frame 2 and a plurality of indication rods 3.
The datum plate 1 is detachably mounted to the end of the sleeve 5 by means of a strut 11. The reference plate 1 is disposed opposite to the end face of the sleeve 5.
The reference plate 1 is provided with three adjustment holes 10. Each adjusting hole is respectively in a strip shape, and each adjusting hole 10 is respectively arranged along the radial direction of the sleeve 5, wherein two adjusting holes 10 are arranged in the same direction, and a third adjusting hole 10 is perpendicular to the two adjusting holes 10.
In this embodiment, two adjusting holes arranged in the same direction are communicated to form a bar-shaped hole.
After the datum plate is arranged at the end part of the sleeve through the supporting rod, the junction point of the three adjusting holes coincides with the axis of the sleeve.
The positioning frame 2 is provided inside the reference plate 1, which in this embodiment is provided towards the end of the sleeve after the reference plate has been mounted to the end of the sleeve.
Specifically, the positioning frame 2 includes two telescopic rod assemblies 21 and a slide rod 22. One ends of the two telescopic rod assemblies 21 are connected together, and the two telescopic rod assemblies are synchronously telescopic in equal proportion. One ends of the two telescopic rod assemblies 21 are connected and vertically arranged.
A sliding rod 22 is slidably arranged in each of the three adjusting holes 10. The sliding rod 22 in the third adjusting hole 10 is connected to the connection part of one ends of the two telescopic rod assemblies 21, and the other ends of the two telescopic rod assemblies 21 are respectively connected to the sliding pieces in the two adjusting holes 10.
In this embodiment, the two telescoping rod assemblies telescope in equal proportions as the position of the slide 22 in the third adjustment aperture 10 is adjusted in the adjustment aperture. Specifically, when the sliding rod 22 in the third adjusting hole 10 is adjusted to face the junction of the three adjusting holes, the two telescopic rod assemblies are synchronously shortened in equal proportion, and the sliding rod in the two adjusting holes is driven to move towards the junction; otherwise, the two telescopic rod assemblies are synchronously elongated in equal proportion, so that the sliding rods in the two adjusting holes are driven to move in the direction away from the junction.
One side of the two telescopic rod assemblies 21, which is far away from the sliding rod 22, is connected to a plurality of indicating rods 3. Wherein, each indication rod 3 corresponds to the position of each sliding rod 22 one by one.
According to the pipe centering device in the sleeve, after the pipe centering device is installed at the end part of the sleeve, the intersection point of the three adjusting holes of the datum plate coincides with the axis of the sleeve, and when the position of the sliding rod is adjusted, the plurality of indicating rods arranged on the telescopic rod assemblies are always positioned on a circle taking the axis of the sleeve as the center of a circle through the two telescopic rod assemblies which are synchronously and proportionally telescopic, so that when the plurality of indicating rods are simultaneously attached to the inner wall of the pipe to be installed, the pipe is coaxially arranged in the sleeve, namely the pipe is centered in the sleeve.
According to the pipe centering device in the sleeve, when the pipe is positioned and centered in the sleeve, the positioning and measuring efficiency of the pipe is improved, the coincidence point of the center of the sleeve and the center of the pipe is quickly achieved, and the mounting efficiency and the mounting quality of the pipe are further improved.
In this embodiment, the outer edge of the adjustment hole 10 is provided with graduation marks. Graduation marks are provided along the length direction of the adjustment hole 10. When the positions of the sliding rods in the adjusting holes are adjusted, whether the sliding rods synchronously move equidistantly or not is observed through the scale marks.
As a preferred embodiment, the telescopic rod assembly 21 includes: a guide bar 211 and a sliding sleeve 212.
The first ends of the guide rods 211 of the two telescopic rod assemblies 21 are connected together and vertically arranged, and the sliding rod 22 in the third adjusting hole 10 is connected to the connection part of the first ends of the guide rods 211 of the two telescopic rod assemblies 21. The second end of the guide bar 211 is movably sleeved with a sliding sleeve 212. The sliding rods 22 in the two adjusting holes 10 are respectively connected to the sliding sleeves 212 of the two telescopic rod assemblies 21.
In this embodiment, the outer diameter of the second end of the guide rod is smaller than the outer diameter of the first end of the guide rod, and the outer diameter of the second end of the guide rod is adapted to the inner diameter of the sliding sleeve. The sliding sleeve moves in the axial direction of the guide rod.
For clarity and convenience in adjusting the position of the pipe, the reference plate is provided with an observation hole 100.
As a preferred embodiment, the reference plate 1 has an isosceles right triangle shape. The length of the bottom edge of the reference plate 1 fits inside the sleeve 5. A detection ruler is rotatably connected to the midpoint of the bottom edge of the reference plate 1. The inner radius and the outer radius of the pipe can be measured by the detection ruler, and the thickness of the sleeve can be roughly measured.
As shown in fig. 3 and 5, a hanging ring 13 is connected to the bottom side of the reference plate 1. The end of the detection ruler is provided with a perforation. The hanging ring 13 is movably arranged in the through hole.
In the present embodiment, the struts 11 are arranged in the axial direction of the sleeve 5. The number of struts 11 is plural. The plurality of struts 11 are arranged at equal intervals in the circumferential direction of the sleeve 5. The struts 11 are arranged at the corners of the reference plate 1. One end of the strut 11 is connected to the inside of the reference plate 1. The other end of the supporting rod 11 is connected with a clamping rod 12. As shown in fig. 6 and 7, a clamping space is formed between the clamping rod 12 and the outside of the strut 11, and the wall of the sleeve 5 is detachably embedded in the clamping space.
As a preferred embodiment, the indication rod 3 is an elastic rod. In this embodiment, the elastic rod is a rubber rod. When the pipe is adjusted, the positions of the pipe are repeatedly adjusted, so that the plurality of indication rods are simultaneously attached to the inner wall of the pipe, and the indication rods are in a vertical rod shape at the moment and do not generate any elastic deformation.
The invention provides a construction method of a pipe centering device in a sleeve, which comprises the following steps:
S1: the pipe 6 to be installed is arranged in the sleeve 5.
The pipe is arranged in the sleeve, and the pipe and the sleeve are arranged in the same direction.
S2: the reference plate 1 is detachably mounted to the end of the sleeve 5 by means of a strut 11, so that a plurality of indicator bars 3 are inserted into ports in one end of the tubing 6.
The clamping space of one end of the support rod far away from the reference plate is sleeved on the pipe wall of the end part of the sleeve, so that three adjusting holes of the reference plate are respectively arranged along the radial direction of the sleeve.
The plurality of indication rods are inserted into the pipe, and when the plurality of indication rods do not generate any elastic deformation and are simultaneously attached to the inner wall of the pipe, the pipe is arranged in the sleeve in the middle.
Otherwise, step S3 is needed for adjustment.
S3: the sliding rod 22 in the third sliding adjusting hole 10, the two telescopic rod assemblies 21 synchronously stretch in equal proportion, and the positions of the pipe 6 are adjusted at the same time, so that the plurality of indicating rods 3 are simultaneously attached to the inner wall of the pipe 6 to enable the pipe 6 and the sleeve 5 to be coaxially arranged.
The pipe centering device in the sleeve is simple in principle, simple and convenient to operate, capable of improving positioning and measuring efficiency, reducing labor consumption, good in impression effect and good in economic price and social influence value.
The above description is only illustrative of the preferred embodiments of the present application and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the application referred to in the present application is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present application (but not limited to) having similar functions are replaced with each other.

Claims (4)

1. A tubing centering device in a casing, comprising:
the reference plate is detachably arranged at the end part of the sleeve through the supporting rod, the reference plate is arranged opposite to the end surface of the sleeve, the reference plate is provided with three strip-shaped adjusting holes, the adjusting holes are arranged along the radial direction of the sleeve, two adjusting holes are arranged in the same direction, and the third adjusting hole is perpendicular to the two adjusting holes;
The positioning frame is arranged on the inner side of the reference plate and comprises two telescopic rod assemblies and sliding rods, wherein the two telescopic rod assemblies and the sliding rods synchronously stretch in equal proportion, one sliding rod is arranged in each of three adjusting holes in a sliding mode, one ends of the two telescopic rod assemblies are connected and are vertically arranged, the sliding rod in each of the third adjusting holes is connected to the connecting position of one ends of the two telescopic rod assemblies, and the other ends of the two telescopic rod assemblies are connected to sliding pieces in the two adjusting holes respectively; and
The telescopic rod assemblies are connected with the sliding rods, and the positions of the telescopic rod assemblies are corresponding to the positions of the sliding rods one by one;
The outer edge of the adjusting hole is provided with scale marks, and the scale marks are arranged along the length direction of the adjusting hole;
The telescopic rod assembly includes:
The first ends of the guide rods of the two telescopic rod assemblies are connected together and are vertically arranged, and the sliding rod in the third adjusting hole is connected to the joint of the first ends of the guide rods of the two telescopic rod assemblies; and
The second end of the guide rod is movably sleeved with the sliding sleeve, and the sliding rods in the two adjusting holes are respectively connected with the sliding sleeves of the two telescopic rod assemblies;
the reference plate is in the shape of an isosceles right triangle;
The support rods are arranged along the axial direction of the sleeve, the number of the support rods is multiple, the support rods are arranged at equal intervals along the circumferential direction of the sleeve, and the support rods are arranged at the corners of the reference plate;
One end of the supporting rod is connected to the inner side of the reference plate, the other end of the supporting rod is connected with a clamping rod, a clamping space is formed between the clamping rod and the outer side of the supporting rod, and the pipe wall of the sleeve is detachably embedded in the clamping space;
The length of the bottom edge of the reference plate is adapted to the inner diameter of the sleeve, and a detecting ruler is rotatably connected to the midpoint of the bottom edge of the reference plate.
2. The pipe centering device in a sleeve according to claim 1, wherein a hanging ring is connected to the bottom edge of the reference plate, a through hole is formed in the end portion of the detection ruler, and the hanging ring is movably arranged in the through hole in a penetrating mode.
3. The tubing centering device in a cannula of claim 1, wherein the indicator stem is an elastic stem.
4. A construction method of the pipe centering device in the casing according to any one of claims 1 to 3, comprising the steps of:
Arranging a pipe to be installed in the sleeve;
The reference plate is detachably arranged at the end part of the sleeve through the support rod, so that a plurality of indication rods are inserted into ports at one end of the pipe;
the sliding rod in the third adjusting hole slides, the two telescopic rod assemblies synchronously stretch in equal proportion, and the positions of the tubes are adjusted simultaneously, so that a plurality of indicating rods are attached to the inner wall of the tubes simultaneously, and the tubes and the sleeves are coaxially arranged.
CN202210178990.2A 2022-02-25 2022-02-25 Pipe centering device in casing pipe and construction method thereof Active CN114603501B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210178990.2A CN114603501B (en) 2022-02-25 2022-02-25 Pipe centering device in casing pipe and construction method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210178990.2A CN114603501B (en) 2022-02-25 2022-02-25 Pipe centering device in casing pipe and construction method thereof

Publications (2)

Publication Number Publication Date
CN114603501A CN114603501A (en) 2022-06-10
CN114603501B true CN114603501B (en) 2024-04-30

Family

ID=81860049

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210178990.2A Active CN114603501B (en) 2022-02-25 2022-02-25 Pipe centering device in casing pipe and construction method thereof

Country Status (1)

Country Link
CN (1) CN114603501B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6217015B1 (en) * 1999-07-08 2001-04-17 Paul Kulla Glass block installation tool
CN205877406U (en) * 2016-07-01 2017-01-11 广东省工业设备安装有限公司 Casing centralization stationary device
CN108301790A (en) * 2018-03-21 2018-07-20 中海石油(中国)有限公司湛江分公司 A kind of well head auxiliary casing centralization sits slip system and application process
CN213448478U (en) * 2020-09-27 2021-06-15 中国二冶集团有限公司 Underground garage bored concrete pile steel reinforcement cage centering device
CN214702066U (en) * 2021-05-20 2021-11-12 河南黄科工程技术检测有限公司 Pile hole aperture measuring device
CN114001677A (en) * 2021-11-05 2022-02-01 中建八局新型建造工程有限公司 Device and method for measuring central shaft deviation of butt-jointed pipelines with different diameters

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7121776B2 (en) * 2001-08-16 2006-10-17 Story Jr Paul J Housing retrofit assembly for a milling machine or the like

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6217015B1 (en) * 1999-07-08 2001-04-17 Paul Kulla Glass block installation tool
CN205877406U (en) * 2016-07-01 2017-01-11 广东省工业设备安装有限公司 Casing centralization stationary device
CN108301790A (en) * 2018-03-21 2018-07-20 中海石油(中国)有限公司湛江分公司 A kind of well head auxiliary casing centralization sits slip system and application process
CN213448478U (en) * 2020-09-27 2021-06-15 中国二冶集团有限公司 Underground garage bored concrete pile steel reinforcement cage centering device
CN214702066U (en) * 2021-05-20 2021-11-12 河南黄科工程技术检测有限公司 Pile hole aperture measuring device
CN114001677A (en) * 2021-11-05 2022-02-01 中建八局新型建造工程有限公司 Device and method for measuring central shaft deviation of butt-jointed pipelines with different diameters

Also Published As

Publication number Publication date
CN114603501A (en) 2022-06-10

Similar Documents

Publication Publication Date Title
CN114603501B (en) Pipe centering device in casing pipe and construction method thereof
CN101750002B (en) Coaxial rotating position error detector
CN110274585A (en) A kind of architectural engineering testing apparatus for verticality
CN105115447A (en) Method for measuring angle of tuyere medium sleeve and special-purpose tool thereof
CN104567608A (en) Rubber sealing ring measuring tool and rubber sealing ring measuring method
CN103697846A (en) Method for detecting wall thickness evenness of multi-directional die forged piece
CN200993560Y (en) Measuring scale for opening degree of front and rear guide scales of rolling mill
CN211626439U (en) Bending degree detection device for plate for bending machine
CN207066329U (en) Brake-toggle shaft symmetry degree gauge
CN210180368U (en) End face verticality detection device of compressor piston
CN102927881A (en) Light and adjustable coiling side guide plate opening degree calibration device
CN209978764U (en) Mounting hole of iron core detects frock
CN210400241U (en) Novel thickness detection device for photoetching film processing
CN216803419U (en) Marking device for outer surface of building construction pipe fitting
CN202928539U (en) Sinusoidal centering frame used for detecting for coaxiality of large diameter cylindrical surface
CN205139113U (en) Testing stand and alcohol detection device of alcohol
CN212843298U (en) High-precision displacement micrometer instrument of pure mechanical type
CN214407329U (en) Detector probe calibrating device in pipeline warp
CN204881377U (en) Mike amplification device
CN105466372B (en) A kind of position detecting tool for sleeve of shifting gears
CN105043226A (en) Magnetic attracting type residual deformation measuring apparatus
CN219841901U (en) Portable pipeline pipe diameter measuring caliper
CN220751433U (en) Differential pressure measuring transmitter
CN204788107U (en) Slide caliper reading amplification device
CN211552628U (en) Building that conveniently carries detects uses scale

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant