CN104913757B - A kind of railway freight-car crank throw axis angle measurement apparatus and method - Google Patents

A kind of railway freight-car crank throw axis angle measurement apparatus and method Download PDF

Info

Publication number
CN104913757B
CN104913757B CN201510303115.2A CN201510303115A CN104913757B CN 104913757 B CN104913757 B CN 104913757B CN 201510303115 A CN201510303115 A CN 201510303115A CN 104913757 B CN104913757 B CN 104913757B
Authority
CN
China
Prior art keywords
shaped groove
block
plate
angle measurement
sliding block
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
CN201510303115.2A
Other languages
Chinese (zh)
Other versions
CN104913757A (en
Inventor
马国英
刘霞
张洁
丁志涛
朱瑞方
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.)
CRRC Qiqihar Rolling Stock Co Ltd
CRRC Beijing Erqi Vehicle Co Ltd
Original Assignee
CSR Erqi Vehicle 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 CSR Erqi Vehicle Co Ltd filed Critical CSR Erqi Vehicle Co Ltd
Priority to CN201510303115.2A priority Critical patent/CN104913757B/en
Publication of CN104913757A publication Critical patent/CN104913757A/en
Application granted granted Critical
Publication of CN104913757B publication Critical patent/CN104913757B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/22Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

The present invention relates to a kind of railway freight-car crank throw axis angle measurement apparatus and method, it is characterised in that:It includes a frame plate, and frame plate is made up of a upper mounted plate, a bottom plate and a connecting plate;The breach of a triangle is offered in the bottom of upper mounted plate;A fixed block is connected in the side of upper mounted plate, the bottom of fixed block offers one first V-shaped groove;A rectangle chute arranged along the centerline direction of the first V-shaped groove on fixed block is provided with bottom plate;One movable vee-block device is set in rectangle chute;Movable vee-block device includes a sliding block being connected with rectangle slide, and one second V-shaped groove is set in slider top;A screwed hole is offered in slider bottom, an adjusting screw rod is screwed togather in screwed hole;An angle measurement unit is fastenedly connected on connecting plate, angle measurement unit is in the not homonymy of frame plate with fixed block.The present invention sets a V-shaped groove respectively due to the upper and lower ends in frame plate, and lower end sliding block slidably, therefore be suitable for when measuring the crank throw demand in different installation apertures and different mounting hole distances between center line.

Description

A kind of railway freight-car crank throw axis angle measurement apparatus and method
Technical field
The present invention relates to a kind of measurement apparatus, especially with regard to a kind of railway freight-car crank throw axis angle measurement apparatus and side Method.
Background technology
Set up in the bottom door opener of funnel type railway freight-car and be equipped with crank throw, one end of crank throw be arranged on power transmission shaft with Drive axis, the other end is connected by round pin with connecting rod, and the rotary motion of power transmission shaft is changed into the linear movement of connecting rod.In leakage Struggle against in the bottom door opener of type railway lorry, it is highly important to carry out accurate control to the opened and closed positions that bottom is opened the door, therefore is needed The angle of each crank throw axis in the door opener of bottom is measured and controlled to adjust bottom enabling opened and closed positions.Present crank shaft The method that the angular surveying of line is typically applied in combination using line, plumb line and bevel protractor measures operation.Because bottom is opened the door The crank throw centered is filled to be normally in lower car body small space, therefore the measurement and adjustment of crank throw need many people to be grasped Make.But it is due to operation inconvenience, it is often necessary to carry out measurement and adjustment repeatedly, it is not only time-consuming, laborious, and reduce work Efficiency.
The content of the invention
In view of the above-mentioned problems, it is an object of the invention to provide a kind of easy to operate, the quick and accurate railway freight-car of measurement Crank throw axis angle measurement apparatus and method.
To achieve the above object, the present invention takes following technical scheme:A kind of railway freight-car crank throw axis angle measurement dress Put, it is characterised in that:It includes a frame plate, and the frame plate is connected on described by a upper mounted plate, a bottom plate and one Fixed plate and the connecting plate of the bottom plate are constituted;Lacking in isosceles triangle is offered in the bottom of fixed plate Mouthful;A fixed block is fastenedly connected in the side of fixed plate, it is in isosceles triangle that the bottom of the fixed block, which offers one, The first V-shaped groove, first V-shaped groove on the fixed block aligns with the breach on fixed plate;Described A rectangle chute arranged along the centerline direction of first V-shaped groove on the fixed block is provided with bottom plate; One movable vee-block device is set in the rectangle chute;The movable vee-block device includes one and connected with the rectangle slide The sliding block connect, the 2nd V on second V-shaped groove for being in isosceles triangle, the sliding block is set at the top of the sliding block Shape groove is relative with first V-shaped groove on the fixed block;A screwed hole is offered in the bottom of the sliding block, in the spiral shell An adjusting screw rod for being used to adjust sliding block position in the rectangle chute is screwed togather in pit;It is tight in the sliding block rear end face It is solidly connected a cover plate for being used to prevent the sliding block from coming off out of described rectangle chute;One jiao is fastenedly connected on the connecting plate Measurement apparatus is spent, the angle measurement unit is in the not homonymy of the frame plate with the fixed block.
The angle measurement unit includes the protecting box of a rear end opening, and the inner chamber of the protecting box is placed with a digital water Flat inclinometer;An observation panel is offered in the front end face of the protecting box;A lattice are provided with the middle part of the bottom surface of the protecting box Gear is raised, and keeping off raised both sides in the lattice is respectively arranged with an inclined-plane down and right-angle surface and the digital level inclinometer bottom The wedge of contact;Slided between the bottom surface of the wedge and the protecting box and be provided with an inclined-plane adjustment block;Protected described Shield box two sides bottom is offered respectively is plugged with a microspur being screwed in the inclined-plane adjustment block in a counterbore, the counterbore Adjusting screw.
Bipeltate plate is set in the gap between the protecting box and the digital level inclinometer.
The opening angle scope of first V-shaped groove and second V-shaped groove is 90 °~120 °;In first V-shaped groove An elongated square groove can be opened up respectively with the bottom of second V-shaped groove.
Multiple mitigation deadweights are opened up in the frame plate and are easy to the hand-held hand-hold hole of testing staff.
Each corner of outline of the frame plate is set to arc-shaped.
A kind of measuring method of described device, it comprises the following steps:
1) first by calibration block fixed placement on levelling bench, calibration block is that a two ends have and the first V-shaped groove respectively The type face being engaged with the second V-shaped groove shape;
2) adjusting screw rod is rotated, the second V-shaped groove on the first V-shaped groove and sliding block of fixed block is clamped on calibration block respectively Two ends;
3) gap between measurement calibration block two ends type face and the first V-shaped groove and the second V-shaped groove, when gap is zero, beats Open angle measurement unit and observe its reading;When gap is not zero, rotation adjusting screw rod, the first vee-block of regulation and the 2nd V are unclamped The position of shape block, zero is adjusted to until adjusting to the gap between calibration block two ends type face and the first V-shaped groove and the second V-shaped groove;
4) when open angle measurement apparatus observes its reading, when reading is shown as " 90 ° ", adjusting screw rod is unclamped, is taken out Calibration block, completes to check;When reading is not " 90 ° ", microspur adjusting screw is rotated, until making its reading be adjusted to after " 90 ° " Complete to check work;
5) after the completion of checking, power transmission shaft is first passed through to the first V-shaped groove of fixed block, and is stuck in the external cylindrical surface of power transmission shaft In first V-shaped groove;
6) simultaneously, round pin axle is passed through to the second V-shaped groove of sliding block, and by the adjusting screw rod in rotary slider, makes sliding block The position of external cylindrical surface of round pin axle can be blocked by being moved to its second V-shaped groove;
7) and then open angle measurement apparatus, two mounting hole central axis and the ground of crank throw can be measured by observing its reading The angle angle value of vertical line and/or surface water horizontal line.
The present invention is due to taking above technical scheme, and it has advantages below:1st, the present invention is due in the upper solid of frame plate A V-shaped groove is respectively arranged with fixed board and bottom plate, and the sliding block being located on bottom plate is slidably, therefore measuring When be suitable for the crank throw demand of different installation apertures and different mounting hole distances between center line.2nd, the present invention is due at digital level angle Protecting box is provided with outside degree instrument, and adds in protecting box bipeltate plate, therefore digital level angle gauge can be carried out Anti-vibration protected, device is damaged caused by can also effectively preventing in unfavorable operating environment due to colliding with, beating.3rd, it is of the invention The consistent microspur adjustment spiral shell for wearing inclined-plane adjustment block is plugged with a counterbore, counterbore due to being opened up respectively in protecting box two sides bottom Nail, therefore can be by rotating microspur adjusting screw come adjustable inclined surface apparatus adjustment block and the relative position of wedge, and then to numeral The position of level angle gauge and measurement accuracy are calibrated.4th, microspur adjusting screw of the invention is due to being plugged in counterbore, because This can effectively prevent microspur adjusting screw at work unintentional rotation and cause digital level inclinometer datum-plane angle lose It is accurate.5th, the present invention in frame plate due to offering multiple hand-hold holes, therefore can be easy to detect people while deadweight is mitigated Member's operation.6th, the present invention is due to being configured with special calibration block, and it is quick, accurate that each measuring basis of apparatus of the present invention can be carried out Positioning and calibration.
Brief description of the drawings
Fig. 1 is the main structure diagram of the present invention;
Fig. 2 is Fig. 1 right side structural representation;
Fig. 3 is Fig. 1 left view structural representation;
Fig. 4 is the structural representation of Fig. 2 Section A-A;
Fig. 5 is the overall structure diagram of the inclinometer of the present invention;
Fig. 6 is the structural representation of working condition of the present invention;
Fig. 7 is Fig. 6 left view;
Fig. 8 is present invention calibration schematic diagram.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
As shown in figures 1-4, the present invention includes a frame plate 1, and frame plate 1 is by a upper mounted plate 11, the and of a bottom plate 12 The connecting plate 13 of one connection upper mounted plate 11 and bottom plate 12 is constituted;It is in isosceles three that one is offered in the bottom of upper mounted plate 11 Angular breach 111;A fixed block 2 is fastenedly connected in the side of upper mounted plate 11, it is in isosceles that the bottom of fixed block 2, which offers one, V-shaped groove 21 on the V-shaped groove 21 of triangle, fixed block 2 aligns with the breach 111 on upper mounted plate 11;On bottom plate 12 It is provided with a rectangle chute 121 arranged along the centerline direction of the V-shaped groove 21 on fixed block 2;Set in rectangle chute 121 One movable vee-block device 3;Movable vee-block device 3 includes a sliding block 31 being slidably connected with rectangle chute 121, in sliding block 31 Top sets the V-shaped groove 36 on a V-shaped groove 36 for being in isosceles triangle, sliding block 31 relative with the V-shaped groove 21 on fixed block 2; The bottom of sliding block 31 offers a screwed hole 33, and one is screwed togather in screwed hole 33 is used for adjusting slider 31 in rectangle chute 121 The adjusting screw rod 34 of position;Being fastenedly connected one in the rear end face of sliding block 31 is used for what anti-limited slip block 31 came off out of rectangle chute 121 Cover plate 35;An angle measurement unit 4 is fastenedly connected on connecting plate 13, angle measurement unit 4 is in frame plate 1 with fixed block 2 Not homonymy.
In above-described embodiment, as shown in figure 5, angle measurement unit 4 includes the protecting box 41 of a rear end opening, protecting box 41 Inner chamber be placed with a digital level inclinometer 42.Offering one in the front end face of protecting box 41 is used to manipulating and observing digital water The observation panel 43 of the flat reading of inclinometer 42.Lattice gear projection 45 is provided with the middle part of the bottom surface of protecting box 41, in lattice gear projection 45 Both sides are respectively arranged with an inclined-plane down and the wedge 44 that is contacted with the bottom of digital level inclinometer 42 of right-angle surface.In wedge 44 and protecting box 41 bottom surface between slide be provided with an inclined-plane adjustment block 46.One is offered respectively in the two sides bottom of protecting box 41 A microspur adjusting screw 48 being screwed in inclined-plane adjustment block 46 is plugged with counterbore 47, counterbore 47, is adjusted by rotating microspur Screw 48 can adjust the relative position of inclined-plane adjustment block 46 and wedge 45, and then the position to digital level angle gauge 42 and survey Accuracy of measurement is calibrated.
In above-described embodiment, bipeltate plate can be installed in the gap between protecting box 41 and digital level inclinometer 42 additional 49, it is shockproof and fixed for being carried out to digital level angle gauge 42.
In above-described embodiment, the opening angle of breach 111 should be greater than the opening angle of V-shaped groove 21, energy during in order to measure Enough other parts through power transmission shaft 5 and thereon measure operation.The opening angle scope of V-shaped groove 21 and V-shaped groove 36 is 90 ° ~120 °, an elongated square groove 6 can be opened up respectively in the bottom of V-shaped groove 21 and V-shaped groove 36, set for that can be accommodated in measurement It is equipped with the axle of key.
In above-described embodiment, multiple mitigation deadweights can be opened up in frame plate 1 and are easy to the hand-held hand-hold hole of testing staff 16。
In above-described embodiment, each corner of outline of frame plate 1 may be configured as arc-shaped, in order to onsite application, prevent Only turning is collided with and causes frame plate 1 to be deformed.
As can be seen from figures 6 to 8, according to a kind of railway freight-car crank throw axis angle measurement apparatus provided in above-described embodiment, Present invention also offers a kind of measuring method of the device, it comprises the following steps:
1) first by the fixed placement of calibration block 7 in (as shown in Figure 8) on levelling bench, calibration block 7 is that a two ends have respectively There is the type face being engaged with V-shaped groove 21 and the shape of V-shaped groove 36;
2) adjusting screw rod 34 is rotated, the V-shaped groove 36 of the V-shaped groove 21 of fixed block 2 and sliding block 31 is clamped on calibration block 7 respectively Two ends;
3) gap between the measurement two ends type face of calibration block 7 and V-shaped groove 21 and V-shaped groove 36, when gap is zero, opens number Word level angle gauge 42 observes its reading;When gap is not zero, rotation adjusting screw rod 34, regulation vee-block 2 and vee-block are unclamped 32 position, zero is adjusted to until adjusting to the gap between the two ends type face of calibration block 7 and V-shaped groove 21 and V-shaped groove 36;
4) open digital level inclinometer 42 and observe its reading, when the reading on digital level inclinometer 42 is shown as When " 90 ° ", adjusting screw rod 34 is unclamped, calibration block 7 is taken out, completes to check;When reading is not " 90 ° ", rotation microspur adjustment spiral shell Nail 48, completes to check work afterwards until making its reading be adjusted to " 90 ° ";
5) after the completion of checking, power transmission shaft 5 is first passed through to the V-shaped groove 21 (as shown in Figure 6, Figure 7) of fixed block 2, and makes transmission The external cylindrical surface of axle 5 is stuck in V-shaped groove 21;
6) simultaneously, round pin axle 9 is passed through to the V-shaped groove 36 of sliding block 31, and by the adjusting screw rod 34 in rotary slider 31, is made Sliding block 31 is moved to the position that its V-shaped groove 36 can block the external cylindrical surface of round pin axle;
7) the digital level inclinometer 42 and then in open angle measurement apparatus 4, observes the reading on its display screen Measure two mounting hole central axis lines perpendicular to the ground of crank throw 8 and/or the angle angle value of surface water horizontal line.
The various embodiments described above are merely to illustrate the present invention, wherein the structure of each part, connected mode etc. are all can be Change, every equivalents carried out on the basis of technical solution of the present invention and improvement should not be excluded the present invention's Outside protection domain.

Claims (7)

1. a kind of railway freight-car crank throw axis angle measurement apparatus, it is characterised in that:It include a frame plate, the frame plate by The connecting plate of one upper mounted plate, a bottom plate and a fixed plate of connection and the bottom plate is constituted;On described The bottom of fixed plate offers a breach for being in isosceles triangle;A fixed block is fastenedly connected in the side of fixed plate, The bottom of the fixed block offers first V-shaped groove for being in isosceles triangle, first V-shaped groove on the fixed block with Breach alignment on fixed plate;One is provided with the bottom plate along described first on the fixed block The rectangle chute of the centerline direction arrangement of V-shaped groove;One movable vee-block device is set in the rectangle chute;The movable V Shape block assembly includes a sliding block being connected with the rectangle slide, and it is in isosceles triangle that one is set at the top of the sliding block The second V-shaped groove, second V-shaped groove on the sliding block is relative with first V-shaped groove on the fixed block;Described The bottom of sliding block offers a screwed hole, and one is screwed togather in the screwed hole is used to adjust the sliding block in the rectangle chute The adjusting screw rod of position;Being fastenedly connected one in the sliding block rear end face is used to prevent the sliding block from coming off out of described rectangle chute Cover plate;An angle measurement unit is fastenedly connected on the connecting plate, the angle measurement unit is in the fixed block The not homonymy of the frame plate.
2. a kind of railway freight-car crank throw axis angle measurement apparatus as claimed in claim 1, it is characterised in that:The angle is surveyed Amount device includes the protecting box of a rear end opening, and the inner chamber of the protecting box is placed with a digital level inclinometer;Protected described The front end face of shield box offers an observation panel;Lattice gear is provided with the middle part of the bottom surface of the protecting box raised, in lattice gear Raised both sides are respectively arranged with an inclined-plane down and the wedge that is contacted with the digital level inclinometer bottom of right-angle surface;Institute Slip is provided with an inclined-plane adjustment block between stating the bottom surface of wedge and the protecting box;In protecting box two sides bottom difference Offer and a microspur adjusting screw being screwed in the inclined-plane adjustment block is plugged with a counterbore, the counterbore.
3. a kind of railway freight-car crank throw axis angle measurement apparatus as claimed in claim 2, it is characterised in that:In the protection Bipeltate plate is set in the gap between box and the digital level inclinometer.
4. a kind of railway freight-car crank throw axis angle measurement apparatus as claimed in claim 1 or 2, it is characterised in that:Described The opening angle scope of one V-shaped groove and second V-shaped groove is 90 °~120 °;In first V-shaped groove and second V-arrangement The bottom of groove opens up an elongated square groove respectively.
5. a kind of railway freight-car crank throw axis angle measurement apparatus as claimed in claim 1 or 2, it is characterised in that:Described Multiple mitigation deadweights are opened up in frame plate and are easy to the hand-held hand-hold hole of testing staff.
6. a kind of railway freight-car crank throw axis angle measurement apparatus as claimed in claim 1 or 2, it is characterised in that:The structure Each corner of outline of frame plate is set to arc-shaped.
7. a kind of measuring method based on any one of the claims 1~6 described device, it comprises the following steps:
1) first by calibration block fixed placement on levelling bench, calibration block is that a two ends have and the first V-shaped groove and the respectively The type face that two V-shaped groove shapes are engaged;
2) adjusting screw rod is rotated, the second V-shaped groove on the first V-shaped groove and sliding block of fixed block is clamped on the two of calibration block respectively End;
3) gap between measurement calibration block two ends type face and the first V-shaped groove and the second V-shaped groove, when gap is zero, opening angle Degree measurement apparatus observes its reading;When gap is not zero, rotation adjusting screw rod, the first vee-block of regulation and the second vee-block are unclamped Position, until adjusting to the gap between calibration block two ends type face and the first V-shaped groove and the second V-shaped groove and being adjusted to zero;
4) when open angle measurement apparatus observes its reading, when reading is shown as " 90 ° ", adjusting screw rod is unclamped, calibration is taken out Block, completes to check;When reading is not " 90 ° ", microspur adjusting screw is rotated, is completed afterwards until making its reading be adjusted to " 90 ° " Check work;
5) after the completion of checking, power transmission shaft is first passed through to the first V-shaped groove of fixed block, and the external cylindrical surface of power transmission shaft is stuck in first In V-shaped groove;
6) simultaneously, round pin axle is passed through to the second V-shaped groove of sliding block, and by the adjusting screw rod in rotary slider, moves sliding block The position of the external cylindrical surface of round pin axle can be blocked to its second V-shaped groove;
7) and then open angle measurement apparatus, observe its reading can measure crank throw two mounting hole central axis it is perpendicular to the ground The angle angle value of line and/or surface water horizontal line.
CN201510303115.2A 2015-06-05 2015-06-05 A kind of railway freight-car crank throw axis angle measurement apparatus and method Active CN104913757B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510303115.2A CN104913757B (en) 2015-06-05 2015-06-05 A kind of railway freight-car crank throw axis angle measurement apparatus and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510303115.2A CN104913757B (en) 2015-06-05 2015-06-05 A kind of railway freight-car crank throw axis angle measurement apparatus and method

Publications (2)

Publication Number Publication Date
CN104913757A CN104913757A (en) 2015-09-16
CN104913757B true CN104913757B (en) 2017-08-25

Family

ID=54083027

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510303115.2A Active CN104913757B (en) 2015-06-05 2015-06-05 A kind of railway freight-car crank throw axis angle measurement apparatus and method

Country Status (1)

Country Link
CN (1) CN104913757B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102529994A (en) * 2012-01-10 2012-07-04 南车长江车辆有限公司 Bottom door opening and closing air control system for railroad hopper car
CN102944162A (en) * 2012-11-26 2013-02-27 南车二七车辆有限公司 Device for measuring connecting rod eccentricity e of railroad hopper car
CN202903112U (en) * 2012-11-26 2013-04-24 重庆美心翼申机械制造有限公司 Testing fixture for detecting included angle between main shaft plane and eccentric plane of shaft parts
CN203116680U (en) * 2013-03-01 2013-08-07 重庆歇马机械曲轴有限公司 Timing angle detection tool for engine crankshaft assembly
CN103978447A (en) * 2014-06-11 2014-08-13 潼南县玉兰铸造厂(微型企业) Sliding type clamping pliers
CN204730820U (en) * 2015-06-05 2015-10-28 南车二七车辆有限公司 Railway freight-car crank throw axis angle measurement mechanism

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62218055A (en) * 1986-03-18 1987-09-25 Kobe Steel Ltd Method for automatic centering of crank shaft

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102529994A (en) * 2012-01-10 2012-07-04 南车长江车辆有限公司 Bottom door opening and closing air control system for railroad hopper car
CN102944162A (en) * 2012-11-26 2013-02-27 南车二七车辆有限公司 Device for measuring connecting rod eccentricity e of railroad hopper car
CN202903112U (en) * 2012-11-26 2013-04-24 重庆美心翼申机械制造有限公司 Testing fixture for detecting included angle between main shaft plane and eccentric plane of shaft parts
CN203116680U (en) * 2013-03-01 2013-08-07 重庆歇马机械曲轴有限公司 Timing angle detection tool for engine crankshaft assembly
CN103978447A (en) * 2014-06-11 2014-08-13 潼南县玉兰铸造厂(微型企业) Sliding type clamping pliers
CN204730820U (en) * 2015-06-05 2015-10-28 南车二七车辆有限公司 Railway freight-car crank throw axis angle measurement mechanism

Also Published As

Publication number Publication date
CN104913757A (en) 2015-09-16

Similar Documents

Publication Publication Date Title
CN209559669U (en) A kind of damaged energy meter of screen protection glass transition impact
CN207675166U (en) A kind of ground inclination detection device
KR20120006561U (en) Measurement apparatus of crack monitor
CN203642905U (en) Device for measuring deformation of inner liner of containment vessel of nuclear power station
CN104913757B (en) A kind of railway freight-car crank throw axis angle measurement apparatus and method
CN208721078U (en) A kind of fixed holder of hand-held construction account equipment
CN213688167U (en) Deep foundation pit depth sounding device
CN116772816B (en) House square and area measuring device for real estate assessment
CN109282758A (en) A kind of land planning survey device
CN107388942A (en) A kind of architectural engineering detection rule for verticality calibrating installation
CN210464275U (en) Reinforcing bar size detection device
CN209338966U (en) One kind being based on civil engineering flatness detecting device
CN204730820U (en) Railway freight-car crank throw axis angle measurement mechanism
CN106017408A (en) Storey height measuring instrument
CN105277166A (en) Measuring device for perpendicularity and planeness of vertical type rail and measuring method thereof
CN207335640U (en) It is a kind of to exempt from the device measured to well room space of going into the well
CN205843665U (en) A kind of grade rod
CN213779049U (en) Vertical detection ruler for constructional engineering
CN209131654U (en) A kind of land surveying gradiometer
CN205448867U (en) Be used for accurate directed support of amesdial
DE202008016383U1 (en) Indirect distance measuring device
CN208536751U (en) Ring gear distance over bar detector
CN208059765U (en) A kind of blast hole depth measurement device
CN106052517A (en) Small elbow form and location tolerance detector
CN206724935U (en) A kind of numerically controlled lathe protection mechanism assembly precision detects instrument

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CP01 Change in the name or title of a patent holder
CP01 Change in the name or title of a patent holder

Address after: 100072 No. 1 Zhangguozhuangjia, Fengtai District, Beijing

Patentee after: CRRC BEIJING ERQI VEHICLE Co.,Ltd.

Address before: 100072 No. 1 Zhangguozhuangjia, Fengtai District, Beijing

Patentee before: CSR Erqi Vehicle Co.,Ltd.

TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20190702

Address after: 161002 Qigihar City, Heilongjiang province Tiefeng District Plant Road No. 36

Patentee after: CRRC QIQIHAR ROLLING STOCK Co.,Ltd.

Address before: 100072 No. 1 Zhangguozhuangjia, Fengtai District, Beijing

Patentee before: CRRC BEIJING ERQI VEHICLE Co.,Ltd.