CN108007329B - Height-variable magnetic grid ruler strip arrangement device - Google Patents
Height-variable magnetic grid ruler strip arrangement device Download PDFInfo
- Publication number
- CN108007329B CN108007329B CN201711255866.7A CN201711255866A CN108007329B CN 108007329 B CN108007329 B CN 108007329B CN 201711255866 A CN201711255866 A CN 201711255866A CN 108007329 B CN108007329 B CN 108007329B
- Authority
- CN
- China
- Prior art keywords
- rocker arm
- arc
- base
- shaped
- graduated scale
- 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
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a height-variable magnetic grid ruler strip arrangement device, and belongs to the technical field of control rod displacement measurement. The method comprises the following steps: the two ends of the first rocker arm are respectively provided with a first tooth-shaped part, the two ends of the second rocker arm are respectively provided with a second tooth-shaped part, and the second tooth-shaped parts are meshed with the first tooth-shaped parts, so that the motion track of the circle center of the arc-shaped slide rail can be perpendicular to the base; the first rocker arm and the second rocker arm are divided into two sections along the center, and the two sections are respectively screwed together through locking screws and can rotate mutually; two ends of the first rocker arm and the second rocker arm are respectively connected with the arc-shaped guide rail and the base; the graduated scale is detachably arranged on the base, and when the graduated scale is used, one end of the graduated scale is in a free state, and the other end of the graduated scale is hinged to the base and is kept perpendicular to the base; the height position of the arc-shaped slide rail and the installation position of the base are adjusted, so that the circle center of the arc-shaped slide rail is completely overlapped with the rotation center of the operating rod, and the rotation displacement of the rod with the rotation center and the installation plane at different distances can be measured.
Description
Technical Field
The invention belongs to the technical field of displacement measurement of helicopter control levers, and particularly relates to a height-variable magnetic grid ruler strip arrangement device.
Background
The onboard ground test of the dynamic characteristic of the helicopter flight control system is a test for carrying out onboard actual physical characteristic verification on the dynamic characteristic of the helicopter flight control system so as to determine the conformity of the onboard actual physical characteristic with design requirements, and plays a crucial role in ensuring the flight control safety of the helicopter, and the displacement of a control lever is one of the key test parameters of the test.
The following devices and methods are adopted in the past for testing the displacement of the operating lever in the test:
firstly, a stay wire type displacement sensor is adopted to measure the linear distance from a test point of an operating lever to a stay wire outlet of the sensor;
secondly, measuring the rotation angle of the operating lever by adopting an angle sensor;
and thirdly, measuring the arc stroke at the test point of the operating lever by adopting an arc ruler and a magnetic displacement sensor assembly which are fixed by mounting devices such as a magnetic gauge stand and the like.
The displacement of the control lever obtained by the first device and the method is only approximate, because the actual motion track of the test point is a section of circular arc, and the displacement measured by the method is the linear distance from the test point of the control lever to the outlet of the sensor pull wire. Therefore, for the helicopter control lever system with each control lever angular displacement of 20-40 degrees, the control lever displacement measured by the method has larger error.
Secondly, the joystick displacement obtained by the second device and the method is difficult to meet the requirement of a test task, because the motion of the steering column in the test task is instantaneous step motion or high-frequency oscillation motion, so that the requirement on the response speed of a measuring device is high, and the existing angle sensor in a laboratory is difficult to meet the requirement on the high response speed and ensure the accuracy of data.
Finally, the third device and the method are similar to the principle of the invention, but because the parameters of each control channel of each machine type, namely the rotation radius of each control rod test point are different, arc rulers with different radiuses need to be processed in each test, even the arc rulers needing to be processed have two or more specifications due to different parameters of each channel of the same machine type, and the device has poor universality and economy; meanwhile, a large amount of auxiliary installation equipment such as a magnetic meter seat, an extension rod, a fixedly installed bolt and nut and the like are needed for installing the arc ruler by using the method, the installation and debugging are very inconvenient, and particularly for a test task on a helicopter, the operation space is narrow, small parts are easy to fall off, and further great potential safety hazards are brought.
Disclosure of Invention
The purpose of the invention is as follows: in order to solve the problems, the invention provides a variable-height magnetic grid ruler belt arrangement device which is applicable to the measurement of the rotary displacement of operating levers with different rotary radiuses and has high universality; meanwhile, the device is high in integration degree, so that the device can be suitable for measuring the rotation displacement of operating rods with different rotation radiuses without replacing parts, greatly simplifies the test modification difficulty, improves the test efficiency, and greatly reduces the risk of major potential safety hazards caused by dropping and omitting the parts when the test is carried out on the machine.
The technical scheme of the invention is as follows: a variable height magnetic scale tape arrangement device suitable for rotational displacement measurement of joysticks of different rotational radii, comprising: the device comprises an arc-shaped guide rail, a first rocker arm, a second rocker arm, a base and a graduated scale;
the two ends of the first rocker arm are respectively provided with a first tooth-shaped part, the two ends of the second rocker arm are respectively provided with a second tooth-shaped part, the second tooth-shaped parts are mutually meshed with the first tooth-shaped parts, and the motion track of the circle center of the arc-shaped slide rail can be perpendicular to the base;
the first rocker arm and the second rocker arm are divided into two sections along the center, and the two sections are respectively screwed together through screws and can rotate mutually;
two ends of the first rocker arm and the second rocker arm are respectively connected with the arc-shaped guide rail and the base;
the graduated scale is detachably arranged on the base, and when the graduated scale is used, one end of the graduated scale is in a free state, and the other end of the graduated scale is hinged to the base and is kept perpendicular to the base;
the height position of the arc-shaped slide rail and the installation position of the base are adjusted, so that the circle center of the arc-shaped slide rail is completely overlapped with the rotation center of the operating lever, and the rotation displacement of the operating lever with different distances between the rotation center and the installation plane can be measured.
Preferably, the first rocker arm and the second rocker arm are divided into two sections along the center, wherein one section of the first rocker arm and the second rocker arm is provided with a unthreaded hole at the end part, and the other section of the first rocker arm and the second rocker arm is provided with a threaded hole at the end part and is hinged together through a locking screw.
Preferably, the first rocker arm and the second rocker arm are respectively provided with a limiting block, and the limiting blocks are fixed between the first rocker arm and the second rocker arm;
when the first rocker arm and the second rocker arm are opened, the limiting blocks are mutually abutted to prevent the first rocker arm and the second rocker arm from forming cross dislocation.
Preferably, the arc-shaped guide rail consists of a magnetic grid tape mounting plate and an arc-shaped plate;
the magnetic grid ruler belt mounting plate is flush with the bottom surface of one side of the arched plate, and the magnetic grid ruler belt mounting plate exceeding the arched plate is used for sticking the magnetic grid ruler belt.
Preferably, the vertically installed scale is located on the other side of the extension direction of the magnetic grid tape installation plate.
Preferably, the middle part of one side of the magnetic grid tape mounting plate, which is far away from the arched plate, is provided with a horizontal groove, and the bottom surface of the groove is used for aligning with the scale marks of the graduated scale.
The technical scheme of the invention has the beneficial effects that: the height-variable magnetic grid ruler strip arrangement device obviously simplifies the test installation device, improves the installation efficiency of the test device, and reduces the risk of losing the installation parts of the test equipment on the machine.
Drawings
FIG. 1 is a fully closed schematic view of a preferred embodiment of the variable height magnetic scale strip placement apparatus of the present invention;
FIG. 2 is a fully open schematic view of a preferred embodiment of the variable height magnetic scale strip placement apparatus of the present invention;
FIG. 3 is a schematic view of the arrangement of the longitudinal steering column displacement measurement of the device of the preferred embodiment of the variable height magnetic scale strip arrangement of the present invention;
FIG. 4 is a schematic view of the arrangement of the total distance measuring steering column displacement of the device according to the preferred embodiment of the arrangement device of the magnetic scale with variable height of the invention;
the device comprises a guide rail 1, an arc-shaped guide rail 2, a first rocker arm 3, a second rocker arm 4, a base 5, a graduated scale 6, a first tooth-shaped part 7, a second tooth-shaped part 8, a limiting block 9, a magnetic grid ruler belt mounting plate 10, an arc-shaped plate 11, a locking screw 12, a locking nut 13, an operating rod 14, a total distance rod 15, a sensor mounting clamp 16, a magnetic displacement sensor 17 and a rotating shaft center.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
The onboard ground test of the dynamic characteristics of the helicopter flight control system mainly comprises the following steps: the method comprises the following steps of measuring the frequency characteristics of each channel of the flight control system, and measuring the step characteristics of each channel of the flight control system.
The invention provides the arrangement device of the magnetic grid ruler belt of the magnetic displacement sensor, which has strong universality and high installation and use efficiency and is used for measuring the rotation displacement of the helicopter control lever.
A variable height magnetic scale tape arrangement device suitable for rotational displacement measurement of joysticks of different rotational radii, comprising: the device comprises an arc-shaped guide rail 1, a first rocker arm 2, a second rocker arm 3, a base 4 and a graduated scale 5;
the two ends of the first rocker arm 2 are respectively provided with a first tooth-shaped part 6, the two ends of the second rocker arm 3 are respectively provided with a second tooth-shaped part 7, and the second tooth-shaped parts 7 are meshed with the first tooth-shaped parts 6, so that the motion track of the circle center of the arc-shaped slide rail 1 can be perpendicular to the base 4;
two ends of the first rocker arm 2 and the second rocker arm 3 are respectively connected with the arc-shaped guide rail 1 and the base 4 through two groups of cylindrical pins with two-end piers for coarse grinding;
the first rocker arm 2 and the second rocker arm 3 are divided into two sections along the center, and the two sections are respectively screwed together through screws and can rotate mutually;
the graduated scale 5 is detachably arranged on the base 4, when the graduated scale is used, one end of the graduated scale is in a free state, and the other end of the graduated scale is hinged to the base 4 and is kept perpendicular to the base 4, so that the distance between the circle center of the arc-shaped guide rail 1 and the bottom surface of the base 10 is determined;
the arc-shaped guide rail 1 is used for adhering and fixing a magnetic grid ruler tape and is used for horizontally placing a base 4 of the device and adjusting the height position of the arc-shaped slide rail 1 and the installation position of the base 4, so that the circle center of the arc-shaped guide rail 1 is completely coincided with the rotation center of the operating rod, and the rotation displacement of the operating rod with the rotation center and the installation plane at different distances can be measured.
In this embodiment, the first rocker arm 2 and the second rocker arm 3 are divided into two sections along the center, wherein one section of the two sections is provided with a unthreaded hole, and the other section of the two sections is provided with a threaded hole, and the two sections are hinged together through a locking screw 11.
In this embodiment, first rocking arm 2 and second rocking arm 3 are provided with stopper 8 respectively, and stopper 8 is fixed between first rocking arm 2 and second rocking arm 3, and when first rocking arm 2 and second rocking arm 3 were opened, both stopper 8 contradict each other, prevent that first rocking arm 2 and second rocking arm 3 from forming alternately dislocation.
In this embodiment, the arc-shaped guide rail 1 is composed of a magnetic grid tape mounting plate 9 and an arc-shaped plate 10, the magnetic grid tape mounting plate 9 is flush with the bottom surface of one side of the arc-shaped plate 10, and the magnetic grid tape mounting plate 9 exceeding the arc-shaped plate 10 is used for sticking the magnetic grid tape.
It can be understood that: the vertically installed graduated scale 5 is positioned on the other side of the extension direction of the magnetic grid tape installation plate 9.
The middle part of one side that bow-shaped board 10 was kept away from to magnetic grid chi area mounting panel 9 is provided with horizontal recess, and the bottom surface of recess is used for aligning with 5 scales of scale, the convenient high quick adjustment to arc guide rail 1.
When the state of the operating lever for measuring the rotation displacement is determined and the distance between the rotation axis and the plane on the cabin floor is certain and known, the device base 4 is placed on the cabin floor near the operating lever, so that the plane where the arc of the arc guide rail 1 is positioned coincides (parallel and non-interference) with the rotation plane of the operating lever, the rocker arm locking screw 11 is loosened, the arc guide rail 1 is moved up and down, the bottom plane of the middle groove of the arc guide rail 1 is aligned with the distance value between the corresponding rotation axis of the operating lever on the graduated scale 5 and the plane on the cabin floor (when the rotation axis is positioned below the plane on the cabin floor, the corresponding negative scale is aligned, and when the opposite rotation axis is positioned above the plane on the cabin floor, the corresponding positive scale is aligned), the device is moved, so that the center line of the operating lever is radially aligned with the arc guide rail 1 of the device, namely, the arrangement work of the device is completed.
The device can thus be used for measuring the rotational displacement of all steering columns whose position relative to the plane above the cabin floor lies between the two extreme positions of the device (in which fig. 1 shows the lower extreme position and fig. 2 shows the upper extreme position).
Two embodiments of the present apparatus are shown in fig. 3 and 4:
fig. 3 is a layout view of the displacement measuring device of the joystick 13, and fig. 4 is a layout view of the displacement measuring device of the collective lever 14.
The specific method comprises the following steps:
1) calculating the distance (60 mm in figure 3 and 70mm in figure 4) between the shaft center 17 of the rotating shaft of the test measuring channel operating lever 13 and the upper plane of the cockpit bottom plate according to the design parameters, and further obtaining the distance between the circle center of the arc-shaped guide rail 1 and the upper plane of the bottom plate, namely the distance between the circle center of the arc-shaped guide rail 1 and the bottom surface of the base;
2) screwing down a locking nut 12 at the free end of the graduated scale, loosening the locking nut at the fixed end of the graduated scale, rotating the graduated scale by 90 degrees, then locking the fixed end, loosening a rocker arm locking screw 11 unfolding device to enable the bottom plane of the middle groove of the arc-shaped guide rail 1 to be opposite to the numerical scale (which is respectively-60 and-70) obtained by calculation in the step 1);
3) locking screws of the two rocker arms are locked to fix the arc-shaped guide rail 1, a locking nut 12 at the fixed end of the graduated scale 5 is loosened, the scale value is restored to the original position, and the locking nut at the free end of the graduated scale is screwed;
4) after the center line of the straight cylindrical part of the operating rod 13 is aligned with the arc-shaped guide rail in the radial direction, the magnetic displacement sensor is installed on the operating rod 13 by using a sensor installation clamp 15;
5) finely adjusting the mounting position of the sensor mounting clamp 15 to ensure that the relative position between the magnetic displacement sensor 16 and the arc-shaped guide rail 1 meets the test condition;
6) connecting and communicating the magnetic displacement sensor 16 with data acquisition equipment;
7) carrying out corresponding operation on the operating rod according to the test project requirements;
8) the data acquisition device acquires and records rod displacement data.
According to the device, the circle center position of the arc-shaped magnetic grid ruler belt is adjusted by rotating the rocker arm, so that the device can be suitable for measuring the rotating displacement of the helicopter control lever with different rotating radiuses and different rotating shaft positions, the universality of the device is high, and the test cost is reduced; and the integrated and integrated mechanical structure simplifies the steps of installation and debugging, shortens the test time, increases the working efficiency and simultaneously reduces the falling and loss risks of the installation clamp and parts.
Finally, it should be pointed out that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. A variable height magnetic grid ruler tape arrangement device is applicable to the rotation displacement measurement of joysticks with different rotation radiuses, and is characterized by comprising: the device comprises an arc-shaped guide rail (1), a first rocker arm (2), a second rocker arm (3), a base (4) and a graduated scale (5);
two ends of the first rocker arm (2) are respectively provided with a first tooth-shaped part (6), two ends of the second rocker arm (3) are respectively provided with a second tooth-shaped part (7), the second tooth-shaped parts (7) are mutually meshed with the first tooth-shaped parts (6), and the motion track of the circle center of the arc-shaped slide rail (1) can be perpendicular to the base (4);
the first rocker arm (2) and the second rocker arm (3) are divided into two sections along the center, and the two sections are respectively screwed together through locking screws (11) and can rotate mutually;
two ends of the first rocker arm (2) and the second rocker arm (3) are respectively connected with the arc-shaped guide rail (1) and the base (4);
the graduated scale (5) is detachably mounted on the base (4), and when the graduated scale is used, one end of the graduated scale is in a free state, and the other end of the graduated scale is hinged to the base (4) and is kept perpendicular to the base (4);
the height position of the arc-shaped sliding rail (1) and the installation position of the base (4) are adjusted, so that the circle center of the arc-shaped sliding rail (1) is completely overlapped with the rotation center of the operating lever, and the rotation displacement of the operating lever with different distances between the rotation center and the installation plane can be measured.
2. The variable height magnetic scale tape arrangement of claim 1, wherein: the first rocker arm (2) and the second rocker arm (3) are divided into two sections along the center, wherein one section of the two sections is provided with a unthreaded hole, and the other section of the two sections is provided with a threaded hole and hinged together through a locking screw (11).
3. The variable height magnetic scale tape arrangement of claim 1, wherein: the first rocker arm (2) and the second rocker arm (3) are respectively provided with a limiting block (8), and the limiting blocks (8) are fixed between the first rocker arm (2) and the second rocker arm (3);
when the first rocker arm (2) and the second rocker arm (3) are opened, the limiting blocks (8) are mutually abutted to prevent the first rocker arm (2) and the second rocker arm (3) from forming cross dislocation.
4. The variable height magnetic scale tape arrangement of claim 1, wherein: the arc-shaped guide rail (1) consists of a magnetic grid tape mounting plate (9) and an arc-shaped plate (10);
the magnetic grid ruler belt mounting plate (9) is flush with the bottom surface of one side of the arched plate (10), and the magnetic grid ruler belt mounting plate (9) which exceeds the arched plate (10) is used for sticking the magnetic grid ruler belt.
5. The variable height magnetic scale tape arrangement of claim 4, wherein: the vertically installed graduated scale (5) is positioned on the other side of the extension direction of the magnetic grid tape installation plate (9).
6. The variable height magnetic scale tape arrangement of claim 4, wherein: the middle of one side, away from the arched plate (10), of the magnetic grid ruler strip mounting plate (9) is provided with a horizontal groove, and the bottom surface of the groove is used for being aligned with the scales of the graduated scale (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711255866.7A CN108007329B (en) | 2017-12-03 | 2017-12-03 | Height-variable magnetic grid ruler strip arrangement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711255866.7A CN108007329B (en) | 2017-12-03 | 2017-12-03 | Height-variable magnetic grid ruler strip arrangement device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108007329A CN108007329A (en) | 2018-05-08 |
| CN108007329B true CN108007329B (en) | 2020-02-21 |
Family
ID=62056048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711255866.7A Active CN108007329B (en) | 2017-12-03 | 2017-12-03 | Height-variable magnetic grid ruler strip arrangement device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108007329B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29707991U1 (en) * | 1997-05-03 | 1997-07-03 | Emwe Gmbh | Device for measuring the relative positioning of a doctor blade to a roller of a paper machine |
| CN201133798Y (en) * | 2007-12-11 | 2008-10-15 | 中冶宝钢技术服务有限公司 | Centralizer |
| CN104330003A (en) * | 2014-11-24 | 2015-02-04 | 无锡江南电缆有限公司 | Plug-in type caliper gauge used for inspection of segmented conductor strand blocks |
| CN205403678U (en) * | 2016-02-16 | 2016-07-27 | 河南力之星三轮摩托车制造有限公司 | Tricycle turns to angle detector |
| CN106767365A (en) * | 2016-11-29 | 2017-05-31 | 中国直升机设计研究所 | The method of testing and component of bar displacement in a kind of control system stick force attribute testing |
| CN206362290U (en) * | 2016-12-09 | 2017-07-28 | 西安理工大学 | A kind of column and knee type lathe tool protractor |
-
2017
- 2017-12-03 CN CN201711255866.7A patent/CN108007329B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29707991U1 (en) * | 1997-05-03 | 1997-07-03 | Emwe Gmbh | Device for measuring the relative positioning of a doctor blade to a roller of a paper machine |
| CN201133798Y (en) * | 2007-12-11 | 2008-10-15 | 中冶宝钢技术服务有限公司 | Centralizer |
| CN104330003A (en) * | 2014-11-24 | 2015-02-04 | 无锡江南电缆有限公司 | Plug-in type caliper gauge used for inspection of segmented conductor strand blocks |
| CN205403678U (en) * | 2016-02-16 | 2016-07-27 | 河南力之星三轮摩托车制造有限公司 | Tricycle turns to angle detector |
| CN106767365A (en) * | 2016-11-29 | 2017-05-31 | 中国直升机设计研究所 | The method of testing and component of bar displacement in a kind of control system stick force attribute testing |
| CN206362290U (en) * | 2016-12-09 | 2017-07-28 | 西安理工大学 | A kind of column and knee type lathe tool protractor |
Non-Patent Citations (1)
| Title |
|---|
| 万能角度尺的改造;王福荣;《工具技术》;20050728(第7期);第99-100页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108007329A (en) | 2018-05-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4483080A (en) | Alignment detection system | |
| CN103205936A (en) | Device and method for accurately positioning spherical hinge | |
| CN104457668A (en) | Portable axle diameter measuring instrument | |
| CN210464336U (en) | Angle adjusting workbench for measuring angle of flange of bearing inner ring | |
| CN208398849U (en) | A kind of cracking rudder face degree of bias measuring device based on gravity | |
| CN211538235U (en) | Dynamic balance adjusting device of high-precision precise centrifuge | |
| CN111735636A (en) | Dummy positioning device and dummy positioning method for automobile crash test | |
| CN209802268U (en) | Unmanned aerial vehicle pneumatic control surface calibration device | |
| CN103292661B (en) | A kind of track scale installs and measures utensil | |
| CN108007329B (en) | Height-variable magnetic grid ruler strip arrangement device | |
| CN2932303Y (en) | Inside diameter measuring device | |
| CN103837071B (en) | Bar displacement transducer angular surveying fixture | |
| CN101831849B (en) | Multifunctional base template fine adjusting prism adapter | |
| CN106610256A (en) | Device for detecting benchmark arc surface of quadruple guide vane | |
| CN101852581B (en) | Continuous wall thickness measurer and measuring method | |
| CN203817886U (en) | Mounting and adjusting tool for detection head of lathe | |
| CN210036610U (en) | Railway train wheel set size detection device and assembly | |
| CN209166308U (en) | A kind of left suspending cushion component hole-distance detecting device | |
| CN112683306B (en) | Be used for unmanned aerial vehicle to inertial navigation position appearance precision adjustment installation device | |
| CN108549090A (en) | A kind of commander of navigation satellite and positioning accuracy tester | |
| CN103712913B (en) | A kind of regulating device and be provided with the detection system of this regulating device | |
| CN201094018Y (en) | Flatness testing apparatus | |
| CN210321770U (en) | Rotary bar code ruler for calibrating electronic i-angle and sight distance errors of digital level | |
| CN207197491U (en) | A kind of control stick angle measurement unit | |
| CN205192397U (en) | Z is to can adjusting mechanism for corner brace appearance frame, hood lock appearance frame detect platform |
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 |