CN106839956A - Crane girder web Local warping degree detection means - Google Patents

Crane girder web Local warping degree detection means Download PDF

Info

Publication number
CN106839956A
CN106839956A CN201710169225.3A CN201710169225A CN106839956A CN 106839956 A CN106839956 A CN 106839956A CN 201710169225 A CN201710169225 A CN 201710169225A CN 106839956 A CN106839956 A CN 106839956A
Authority
CN
China
Prior art keywords
guide rail
slide unit
rail slide
mobile terminal
mobile platform
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
CN201710169225.3A
Other languages
Chinese (zh)
Inventor
孙微
马舜
汪宏
熊伟东
陈军
张世阔
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.)
Hangzhou Special Equipment Detects Research Institute
Original Assignee
Hangzhou Special Equipment Detects Research Institute
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 Hangzhou Special Equipment Detects Research Institute filed Critical Hangzhou Special Equipment Detects Research Institute
Priority to CN201710169225.3A priority Critical patent/CN106839956A/en
Publication of CN106839956A publication Critical patent/CN106839956A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/30Measuring arrangements characterised by the use of mechanical techniques for measuring the deformation in a solid, e.g. mechanical strain gauge
    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

The invention discloses a kind of crane girder web Local warping degree detection means.Two magnetic force suction bases can be adsorbed in the both sides of crane girder web upper surface respectively, two vertical struts are separately fixed at respective magnetic force suction base upper surface, two cross rod frames are attached separately in respective vertical struts, two vertical struts and the end side surface of " U " guide rail slide unit part two are connected and adjustable height by respective cross rod frame respectively, and scale is respectively marked with pole;Digital dial gauge, data acquisition unit and radio transmitting device are fixed on the mobile platform of " U " guide rail slide unit part, and hand-held mobile terminal is connected with the radio transmitting device on mobile platform and in drive motor controller respectively.By hand-held mobile terminal, wireless remote control operation, high degree of automation;Mobile platform positioning precision is high, and horizontal movement velocity is adjustable;Data storage is in SD card, and mobile terminal carries output interface, is convenient for measuring data-printing, or transmits to computer, carries out subsequent analysis calculating.

Description

Crane girder web Local warping degree detection means
Technical field
The present invention relates to angularity detection means, detected more particularly, to a kind of crane girder web Local warping degree and filled Put.
Background technology
Crane steel structure is the framework of the whole machine of crane, and each operating mechanism, distribution system and drivers' cab are all arranged on Above, and when working, the also effect with sustained load.Therefore, it is necessary to enter to the size of steel construction after completion is welded Row measurement, to ensure that the Deformation control that production technology and other factorses are produced is being designed within the scope of permission.According to GB/ T14405-2011《General-purpose overhead crane》6.2.9 the detection of girder web plate Local warping degree, mainly uses leveling ruler and clearance gauge, In the range of 1 meter, by manual measurement measurer inner side and the maximum in web gap, as the girder web plate Local warping number of degrees Value.There is the defects such as manual transcription is recorded, detection efficiency is low, certainty of measurement is low, artificial measurement error is big in this kind of measuring method.
And existing measuring instrument, just for the measurement of data, still recorded using manual transcription, and there is measurement Data are without continuity, data post the treatment defect such as formality is cumbersome.
With the raising of manufacture of steel structure technological level, crane girder web Local warping degree is also being tapered into, and is passed The detection technique of system, because error is larger, precision is relatively low, and the survey of crane girder web Local warping degree can not have been met significantly The need for amount.
The content of the invention
In order to overcome the shortcomings of above-mentioned background technology, it is an object of the invention to provide a kind of crane girder web part Angularity detection means, the present apparatus can overcome the defects such as inefficient, low certainty of measurement, the high measurement error of manual measurement, together When have the advantages that portability is high, simple to operate, data processing function is powerful.
The technical solution adopted for the present invention to solve the technical problems is:
The present invention includes:Two magnetic force suction bases, two vertical struts, two cross rod frames, guide rail slide unit part, mobile platform, Digital dial gauge, data acquisition unit, two radio transmitting devices, hand-held mobile terminal and drive motor controller;Two magnetic Power suction base lower surface can be adsorbed in the both sides of crane girder web upper surface respectively, and two vertical struts are separately fixed at each Magnetic force suction base upper surface, two cross rod frames are attached separately in respective vertical struts, two vertical struts and guide rail slide unit part Two end side surfaces are connected by respective cross rod frame respectively, and scale is respectively marked with every vertical struts, and two cross rod frames are used respectively To adjust the height of guide rail slide unit part;Digital dial gauge, data acquisition unit and radio transmitting device are solid successively from bottom to up It is scheduled on the mobile platform of guide rail slide unit part, radio transmitting device and motor on hand-held mobile terminal and mobile platform Radio transmitting device connection on controller.
The guide rail slide unit part, including:" U " guide rail slide unit, in place trigger switch, mobile platform, motor, ball Screw mandrel, two horizontal guide rails and drive motor controller;Two horizontal guide rails, " U " guide rail slide unit are fixed between " U " guide rail slide unit One outside is equipped with motor, and motor can drive the ball screw in the middle of two horizontal guide rails to rotate, mobile platform Rear and front end hole constitutes screw in the middle of guideway, mobile platform and constitutes screw pair with ball screw with two horizontal guide rails, in place Trigger switch is fixed in " U " guide rail slide unit near the side of motor, on hand-held mobile terminal and drive motor controller Radio transmitting device connection.
The hand-held mobile terminal, including:Transceiver is wirelessly transferred, trigger switch, data memory module, master control mould is measured Block, LED LCDs and data output interface;Transceiver is wirelessly transferred for receiving digital dial gauge measurement data and biography Defeated motor operation control signal;Measurement trigger switch uses physical button, for one-key start motor and mobile platform Data acquisition unit;Data memory module includes SD card interface and the SD card for storing measurement data;Main control module is used Single-chip microcomputer;LED LCDs uses touch-screen, for displaying scene measurement data and setting horizontal movement velocity sum According to collection period;Data output interface uses USB interface, for being communicated with PC.
The drive motor controller, including radio transmitting device, battery module and motor control module;It is wirelessly transferred Device communicates with hand-held mobile terminal, receives the control signal of hand-held mobile terminal;Motor control module is according to hand-held mobile whole The control signal control motor motion at end;Battery module provides electric energy for motor.
Compared with background technology, the invention has the advantages that:
1) using the magnetic force suction base of belt supporting frame, guide rail slide unit is adsorbed in crane web surface, dial gauge by magnetic force suction base It is fixed on the mobile platform of guide rail slide unit, by hand-held mobile terminal, wireless remote control operation, high degree of automation, operation letter Folk prescription is just.
2) mobile platform positioning precision is high, and horizontal movement velocity is adjustable;Dial gauge can be measured continuously, by data acquisition Device sets data collection interval, and data output has various modes.
3) hand-held mobile terminal and measurement apparatus use wireless connection, convenient use.Data display uses form and two dimension Figure two ways, can be with unrestricted choice.Greatest measurement location point is marked in figure, it is convenient to be positioned on tested crane web, Intuitive is high.
4) data storage is in SD card, and mobile terminal carries output interface, is convenient for measuring data-printing, or transmit to Computer, carries out subsequent analysis calculating.
The present invention is carried out data transmission using wireless transmission method, effectively increases the portability of instrument, and have Simple to operate, data processing function is powerful, the low advantage of measurement error, can effectively improve checkability.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is hand-held mobile terminal schematic diagram of the invention.
Fig. 3 is guide rail slide unit structure schematic top plan view of the invention.
Fig. 4 is guide rail slide unit schematic front view of the invention.
In figure:1st, two magnetic force suction bases, 2, two cross rod frames, 3, two vertical struts, 4, trigger switch in place, 5, lead Rail slide unit part, 6, mobile platform, 7, radio transmitting device, 8, data acquisition unit, 9, digital dial gauge, 10, hand-held movement Terminal, 11, be wirelessly transferred transceiver, 12, data memory module, 13, measurement trigger switch, 14, LED LCDs, 15, number According to output interface, 16, main control module, 17, motor, 18, two horizontal guide rails, 19, ball screw, 20, motor control Device processed, 21, radio transmitting device, 22, battery module, 23, motor control module.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
As shown in Figure 1 and Figure 2, the present invention includes:Two magnetic force suction bases 1, two vertical struts 3, two cross rod frames 2 are led Rail slide unit part 5, mobile platform 6, digital dial gauge 9, data acquisition unit 8, two radio transmitting devices 7,21, hand-held movement Terminal 10 and drive motor controller 20.Two lower surfaces of magnetic force suction base 1 can be adsorbed in crane girder web upper surface respectively Both sides, two vertical struts 3 are separately fixed at the respective upper surface of magnetic force suction base 1, and two cross rod frames 2 are attached separately to each hang down On allotment bar 3,5 liang of end side surfaces of two vertical struts 3 and guide rail slide unit part are connected by respective cross rod frame 2 respectively, every Scale is respectively marked with vertical struts 3, two cross rod frames 2 are respectively intended to adjust the height of guide rail slide unit part 5;Digital percentage Table 9, data acquisition unit 8 and radio transmitting device 7 are sequentially fixed on the mobile platform 6 of guide rail slide unit part 5 from bottom to up, number The measurement head of word formula dial gauge 9 is vertically adjusted can be contacted with tested crane web surface, hand-held mobile terminal 10 with move The radio transmitting device 21 on radio transmitting device 7 and drive motor controller 20 on moving platform 6 is connected.
As shown in Figure 3, Figure 4, the guide rail slide unit part 5, including " U " guide rail slide unit, trigger switch 4, mobile flat in place Platform 6, motor 17, ball screw 19, two horizontal guide rails 18 and drive motor controller 20.It is fixed between " U " guide rail slide unit There are two horizontal guide rails 18, the outside of " U " guide rail slide unit one is equipped with motor 17, and motor 17 can be driven positioned at two levels Ball screw 19 in the middle of guide rail 18 is rotated, and the rear and front end hole of mobile platform 6 constitutes guideway with two horizontal guide rails 18, mobile The middle screw of platform 6 constitutes screw pair with ball screw 19, and trigger switch 4 is fixed in " U " guide rail slide unit near driving in place The side of motor 17, the radio transmitting device 21 on hand-held mobile terminal 10 and drive motor controller 20 is connected.Motor 17 drive mobile platform 6 to be moved along two horizontal guide rails 18 by ball screw 19, and the horizontal movement velocity of mobile platform 6 is divided into Slow third gear in fast, effective traverse measurement distance is 1 meter, and mobile platform 6 is automatic after mobile platform 6 encounters trigger switch 4 in place Stop mobile and measure.
As shown in Fig. 2 the hand-held mobile terminal 10, including:Transceiver 11 is wirelessly transferred, trigger switch 13, number is measured According to memory module 12, main control module 16, LED LCDs 14 and data output interface 15;Being wirelessly transferred transceiver 11 is used for Receive the measurement data of digital dial gauge 9 and transmission electrical machine operation control signal;Measurement trigger switch 13 is placed in hand-held mobile whole 10 surfaces are held, measurement trigger switch 13 uses physical button, for the data on one-key start motor 17 and mobile platform 6 Collector 8;Data memory module 12 includes SD card interface and the SD card for storing measurement data;Main control module 16 is using single Piece machine;LED LCDs 14 uses touch-screen, for displaying scene measurement data and setting horizontal movement velocity sum According to collection period;Data output interface 15 uses USB interface, for being communicated with PC.
As shown in Fig. 1, Fig. 3, Fig. 4, the drive motor controller 20, including:Radio transmitting device 21, battery module 22 and motor control module 23;Radio transmitting device 21 communicates with hand-held mobile terminal 10, receives hand-held mobile whole 10 control Signal;Motor control module 23 controls motor 17 to move according to the control signal of hand-held mobile terminal 10;Battery module 22 provide electric energy for motor.
Operation principle of the invention:
Before starting measurement, magnetic force suction base 1 is adsorbed in crane web surface, height is adjusted with cross rod frame 2, make both sides etc. It is high.Mobile platform 6 is moved into original position, digital dial gauge 9 is finely tuned, contact is close to tested crane web surface, amount Journey is reduced to half, and dial gauge is adjusted to zero-bit manually.The horizontal movement velocity of mobile platform 6 is set by LED LCDs 14 And the data collection cycle of data acquisition unit 8.The horizontal movement velocity of mobile platform 6 be divided into soon, in, slow third gear, it is effectively mobile Measurement distance is 1 meter
When starting measurement, triggering measurement manually switchs 13, and enabling signal is by being wirelessly transferred transceiver 11 and radio transmitting device 7th, radio transmitting device 21 passes to data acquisition unit 8 and motor 17, starts mobile platform 6 and moves in the horizontal direction and number According to collecting work, by the horizontal movement velocity of setting mobile platform 6, distance is moved horizontally for 1 meter, mobile platform 6 is touched afterwards in place Bit switch 4 is dealt into, is automatically stopped and is moved horizontally and data acquisition.The data that data acquisition unit 8 is gathered are by being wirelessly transferred dress Put 7 and be wirelessly transferred the synchronous transfer of transceiver 11 to LED LCDs 14.By main control module 16, data can be set and shown Show mode(Form or two-dimensional coordinate figure show), display greatest measure coordinate is set, it is possible to enterprising in surveyed web accordingly Row positioning, finds out the position of angularity maximum.Meanwhile, by main control module 16, can also be by measured value and set in advance Design load is contrasted, and whether automatic decision meets the requirements.
Above-mentioned specific embodiment is used for illustrating the present invention, rather than limiting the invention, of the invention In spirit and scope of the claims, any modifications and changes made to the present invention both fall within protection model of the invention Enclose.

Claims (4)

1. a kind of crane girder web Local warping degree detection means, it is characterised in that:Including two magnetic force suction bases (1), two Root vertical struts (3), two cross rod frames (2), guide rail slide unit part (5), mobile platform (6), digital dial gauge (9), number According to collector (8), two radio transmitting devices (7,21), hand-held mobile terminal (10) and drive motor controller (20);Two Magnetic force suction base (1) lower surface can be adsorbed in the both sides of crane girder web upper surface respectively, and two vertical struts (3) are solid respectively Respective magnetic force suction base (1) upper surface is scheduled on, two cross rod frames (2) are attached separately in respective vertical struts (3), two vertical branch Bar (3) and the end side surface of guide rail slide unit part (5) two are connected by respective cross rod frame (2) respectively, on every vertical struts (3) Scale is indicated, two cross rod frames (2) are respectively intended to adjust the height of guide rail slide unit part (5);Digital dial gauge (9), number It is sequentially fixed at from bottom to up on the mobile platform (6) of guide rail slide unit part (5) according to collector (8) and radio transmitting device (7), It is wireless on radio transmitting device (7) and drive motor controller (20) on hand-held mobile terminal (10) and mobile platform (6) Transmitting device (21) is connected.
2. a kind of crane girder web Local warping degree detection means according to claim 1, it is characterised in that:It is described Guide rail slide unit part (5), including " U " guide rail slide unit, in place trigger switch (4), mobile platform (6), motor (17), two Horizontal guide rail (18), ball screw (19) and drive motor controller (20);Two levels are fixed between " U " guide rail slide unit to lead Rail (18), the outside of " U " guide rail slide unit one is equipped with motor (17), and motor (17) can be driven positioned at two horizontal guide rails (18) ball screw (19) in the middle of is rotated, and mobile platform (6) rear and front end hole constitutes guideway with two horizontal guide rails (18), Screw constitutes screw pair with ball screw (19) in the middle of mobile platform (6), and trigger switch (4) is fixed on " U " guide rail slide unit in place The side of interior close motor (17), the radio transmitting device on hand-held mobile terminal (10) and drive motor controller (20) (21) connect.
3. a kind of crane girder web Local warping degree detection means according to claim 1, it is characterised in that:It is described Hand-held mobile terminal (10), including transceiver (11) is wirelessly transferred, measurement trigger switch (13), data memory module (12) is main Control module (16), LED LCDs (14) and data output interface (15);Transceiver (11) is wirelessly transferred for receiving numeral Formula dial gauge (9) measurement data and transmission electrical machine operation control signal;Measurement trigger switch (13) uses physical button, for one Key starts the data acquisition unit (8) on motor (17) and mobile platform (6);Data memory module (12) includes SD card interface And for storing the SD card of measurement data;Main control module (16) uses single-chip microcomputer;LED LCDs (14) is using touch Screen, for displaying scene measurement data and setting horizontal movement velocity and data collection cycle;Data output interface (15) is adopted With USB interface, for being communicated with PC.
4. a kind of crane girder web Local warping degree detection means according to claim 1, it is characterised in that:It is described Drive motor controller (20), including radio transmitting device (21), battery module (22) and motor control module (23);Wirelessly Transmitting device (21) communicates with hand-held mobile terminal (10), receives the control signal of hand-held mobile terminal (10);Motor control mould Block (23) controls motor (17) motion according to the control signal of hand-held mobile terminal (10);Battery module (22) is driving Motor provides electric energy.
CN201710169225.3A 2017-03-21 2017-03-21 Crane girder web Local warping degree detection means Pending CN106839956A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710169225.3A CN106839956A (en) 2017-03-21 2017-03-21 Crane girder web Local warping degree detection means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710169225.3A CN106839956A (en) 2017-03-21 2017-03-21 Crane girder web Local warping degree detection means

Publications (1)

Publication Number Publication Date
CN106839956A true CN106839956A (en) 2017-06-13

Family

ID=59129842

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710169225.3A Pending CN106839956A (en) 2017-03-21 2017-03-21 Crane girder web Local warping degree detection means

Country Status (1)

Country Link
CN (1) CN106839956A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107421418A (en) * 2017-09-26 2017-12-01 徐州海伦哲专用车辆股份有限公司 A kind of detection means for being used to measure box house form and position tolerance
CN108772749A (en) * 2018-08-01 2018-11-09 成都飞机工业(集团)有限责任公司 A kind of big stroke Longmen machine tool translation shaft segmentation rack adjustment accuracy detecting device
CN108844511A (en) * 2018-07-04 2018-11-20 江南大学 A kind of portable railway plate flatness inspection devices
CN110726361A (en) * 2019-10-11 2020-01-24 杭州友邦演艺设备有限公司 Safety detection method for underwater stage lamp inner plate

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101701802A (en) * 2009-11-23 2010-05-05 浙江大学 Multi-scale automatic detection system and method for profile errors of T-shaped guide rail
JP2012078248A (en) * 2010-10-04 2012-04-19 Renesas Electronics Corp Method for inspecting semiconductor device
CN202432980U (en) * 2011-12-28 2012-09-12 宁波敏实汽车零部件技术研发有限公司 Mechanism for measuring warpage of end part of rear license plate decoration strip of automobile
CN204165525U (en) * 2014-11-12 2015-02-18 武汉科技大学 A kind of wireless detection device of crane box type girder web wave degree
CN204533057U (en) * 2015-03-18 2015-08-05 鄂尔多斯市特种设备检验所 Crane hydraulic cylinder amount of recovery on-line detector
CN104848758A (en) * 2014-03-20 2015-08-19 上海久牵实业有限公司 Wireless automatic test tool measuring system
CN206593584U (en) * 2017-03-21 2017-10-27 杭州市特种设备检测研究院 A kind of crane girder web Local warping degree detection means

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101701802A (en) * 2009-11-23 2010-05-05 浙江大学 Multi-scale automatic detection system and method for profile errors of T-shaped guide rail
JP2012078248A (en) * 2010-10-04 2012-04-19 Renesas Electronics Corp Method for inspecting semiconductor device
CN202432980U (en) * 2011-12-28 2012-09-12 宁波敏实汽车零部件技术研发有限公司 Mechanism for measuring warpage of end part of rear license plate decoration strip of automobile
CN104848758A (en) * 2014-03-20 2015-08-19 上海久牵实业有限公司 Wireless automatic test tool measuring system
CN204165525U (en) * 2014-11-12 2015-02-18 武汉科技大学 A kind of wireless detection device of crane box type girder web wave degree
CN204533057U (en) * 2015-03-18 2015-08-05 鄂尔多斯市特种设备检验所 Crane hydraulic cylinder amount of recovery on-line detector
CN206593584U (en) * 2017-03-21 2017-10-27 杭州市特种设备检测研究院 A kind of crane girder web Local warping degree detection means

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107421418A (en) * 2017-09-26 2017-12-01 徐州海伦哲专用车辆股份有限公司 A kind of detection means for being used to measure box house form and position tolerance
CN107421418B (en) * 2017-09-26 2024-02-09 徐州海伦哲专用车辆股份有限公司 Detection device for measuring form and position tolerance in box body
CN108844511A (en) * 2018-07-04 2018-11-20 江南大学 A kind of portable railway plate flatness inspection devices
CN108772749A (en) * 2018-08-01 2018-11-09 成都飞机工业(集团)有限责任公司 A kind of big stroke Longmen machine tool translation shaft segmentation rack adjustment accuracy detecting device
CN108772749B (en) * 2018-08-01 2023-10-03 成都飞机工业(集团)有限责任公司 Large-stroke gantry machine tool translational shaft sectional rack assembling and adjusting precision detection device
CN110726361A (en) * 2019-10-11 2020-01-24 杭州友邦演艺设备有限公司 Safety detection method for underwater stage lamp inner plate
CN110726361B (en) * 2019-10-11 2021-07-06 杭州友邦演艺设备有限公司 Safety detection method for underwater stage lamp inner plate

Similar Documents

Publication Publication Date Title
CN206593584U (en) A kind of crane girder web Local warping degree detection means
CN106839956A (en) Crane girder web Local warping degree detection means
CN202304773U (en) Flatness detector
CN201464146U (en) Automatic mobile phone drop tester with acceleration measurement
CN204373601U (en) A kind of form and position tolerance pick-up unit for deadlight
CN102519338A (en) Device for measuring thickness of battery
CN204269081U (en) A kind of ceramic rod detects machine
CN203550918U (en) T-shaped elevator guide rail detection platform
CN204422671U (en) The two of a kind of touch-screen refer to liner agency
CN203116706U (en) Steel rail automatic leveling laser detection device
CN105486267B (en) A kind of internal-and external diameter flexibility self-operated measuring unit of cylindrical part
CN103438851B (en) A kind of slide block groove center distance detector and measuring method thereof
CN206160981U (en) A device for measuring vehicle contour dimension
CN205245984U (en) Lift gauge automatic checkout device
CN208054747U (en) Hoisting machinery high-altitude orbit intelligent measurement trolley
CN104848758B (en) Wireless automatic detection tool measuring system
CN201047841Y (en) Board quality testing apparatus
CN203305308U (en) Water-jet cutting machine
CN204881494U (en) A flatness error detection device for processing scene
CN205561802U (en) Flexible automatic measuring device of interior external diameter of drum class part
CN209921329U (en) Switch rail reduced value measuring and evaluating device
CN107688159A (en) A kind of magnetic flux detection device and magnetic flux quantity measuring method
CN203405192U (en) Slide block groove center distance detector
CN210732216U (en) Steel grating original plate positioning device
CN208902053U (en) A kind of coal mine roadway deformation monitoring device

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
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20170613