CN109625322A - A kind of rocket launching unmanned plane thrust line measuring device - Google Patents
A kind of rocket launching unmanned plane thrust line measuring device Download PDFInfo
- Publication number
- CN109625322A CN109625322A CN201910082953.XA CN201910082953A CN109625322A CN 109625322 A CN109625322 A CN 109625322A CN 201910082953 A CN201910082953 A CN 201910082953A CN 109625322 A CN109625322 A CN 109625322A
- Authority
- CN
- China
- Prior art keywords
- unmanned plane
- thrust bearing
- wirerope
- rocket
- thrust
- 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.)
- Granted
Links
- 238000005259 measurement Methods 0.000 claims abstract description 34
- 230000006978 adaptation Effects 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000007903 penetration ability Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/60—Testing or inspecting aircraft components or systems
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Transportation (AREA)
- Aviation & Aerospace Engineering (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The present invention relates to a kind of unmanned plane measuring devices, and in particular to a kind of rocket launching unmanned plane thrust line measuring device；Solves the technical problem that existing rocket launching unmanned plane thrust line measuring device measurement is inconvenient, measurement efficiency and measurement accuracy are low.The technical solution of the invention is as follows: a kind of rocket launching unmanned plane thrust line measuring device, including upper wirerope, with upper wirerope axis to connected thrust bearing connecting rod, the thrust bearing connector sleeve being sleeved on outside thrust bearing connecting rod, thrust bearing between thrust bearing connecting rod and thrust bearing connector sleeve is set, one end connection thrust bearing connector sleeve other end is used to connect the lower wirerope of unmanned plane rocket adapter, it is sleeved on outside lower wirerope and one end is used to connect the rectangle measuring cylinder of unmanned plane rocket adapter, for measuring the measuring scale of distance between lower wirerope and rectangle measuring cylinder.
Description
Technical field
The present invention relates to a kind of unmanned plane measuring devices, and in particular to a kind of rocket launching unmanned plane thrust line measurement dress
It sets.
Background technique
Unmanned plane has been widely used for scouting, monitor, target positioning, target Damage assessment, electronic countermeasure, communication at present
The numerous areas such as relaying.Since unmanned plane is at low cost, penetration ability is good and has outstanding performance in practice, user compels to be essential
Various unmanned planes easy to use, function admirable are wanted, therefore safety, reliability, economy and excellent performance also become nobody
The ultimate challenge of machine exploitation.
There are many modes of taking off for existing unmanned plane, wherein relatively broad with catapult-assisted take-off and the application that takes off.Ejection
It takes off and includes rocket launching and launching cradle catapult-assisted take-off.Rocket launching has mechanism simple, at low cost, high reliablity excellent
Point, most unmanned planes are all made of such mode of taking off.
Rocket launching unmanned plane, to guarantee emission security, needs rocket thrust line to pass through nobody due to using rocket launching
Machine center of gravity, therefore, it is necessary to measure calibration to thrust line before unmanned plane takes off.
Existing thrust line measurement is by connecting hanging wirerope at the physical fit of rocket and unmanned plane, by nobody
Machine is sling, and then by the distance between measurement hanging wirerope and round measuring cylinder, completes thrust line measurement.Chinese patent
" a kind of small drone thrust line surveyors' staff transposition and measurement method " (publication number: CN108357696A), discloses one kind
Small drone thrust line surveyors' staff device, which is this type, and there are two disadvantages for the device, one is hanging
During playing unmanned plane, it will appear rotation due to hanging wirerope stress, drive unmanned plane rotation, cause to measure inconvenient, survey
Amount efficiency is low；The second is measuring steel wire rope and round measuring cylinder apart from when, since measuring cylinder is circle, be easy when reading data
Error in reading is generated, measurement accuracy is influenced.
Summary of the invention
It is low in order to solve inconvenient existing rocket launching unmanned plane thrust line measuring device measurement, measurement efficiency and measurement accuracy
The technical issues of, the present invention provides a kind of rocket launching unmanned plane thrust line measuring devices.
The technical solution of the invention is as follows:
A kind of rocket launching unmanned plane thrust line measuring device, it is characterised in that:
Including upper wirerope, with upper wirerope axis to connected thrust bearing connecting rod, be sleeved on thrust bearing connecting rod
The thrust bearing connector sleeve of outside, the thrust bearing being arranged between thrust bearing connecting rod and thrust bearing connector sleeve, one end
The connection thrust bearing connector sleeve other end is used to connect the lower wirerope of unmanned plane rocket adapter, is sleeved on outside lower wirerope
And rectangle measuring cylinder, the spacing for measuring lower wirerope and rectangle measuring cylinder that one end is used to connect unmanned plane rocket adapter
From measuring scale；
The thrust bearing connecting rod is fixedly connected with the blowout patche of thrust bearing；The seat ring of the thrust bearing is embedded in institute
It states in thrust bearing connector sleeve；
Rectangle measuring cylinder one end inner hole is square hole, and the other end is connect with unmanned plane rocket adapter.
Further, more convenient in order to measure, the rectangle measuring cylinder inner hole is that one end end face of square hole is equipped with scale
Line.
Further, more convenient in order to dismantle, the lower wirerope lower part setting adaptation attachment screw, the lower wirerope
It is connected on unmanned plane rocket adapter by being adapted to attachment screw.
Further, the thrust bearing connector sleeve is disposed radially the through-hole for passing through the lower wirerope.
Further, more convenient in order to measure, the measuring scale is Steel Ruler.
Further, in order to which measurement accuracy is higher, the measuring scale is vernier caliper.
The beneficial effect of the present invention compared with prior art is:
1, the present invention eliminates nobody generated when unmanned plane slings measurement due to upper wirerope stress by thrust bearing
Machine rotation, i.e., when the blowout patche of thrust bearing is rotated with upper wirerope, since blowout patche and seat ring can relatively rotate, seat ring lower part
The unmanned plane of connection will not be with hanging wirerope rotation, and unmanned plane is small, stable fast by disturbing；Device measurement is convenient, measurement is imitated
Rate is high；The present invention uses rectangle measuring cylinder, and measurement, measurement process reading side can be completed without dedicated scale and rear sight base
Just, error in reading is small, effectively increases measurement accuracy and efficiency.
2, the rectangle measuring cylinder inner hole in the present invention is that one end end face of square hole is equipped with graduation mark, and measurement is more convenient.
3, the lower wirerope lower part setting adaptation attachment screw in the present invention, the lower wirerope pass through adaptation attachment screw
It is connected on unmanned plane rocket adapter, disassembly is more convenient.
4, the measuring scale in the present invention can be Steel Ruler, and measurement is more convenient.
5, the measuring scale in the present invention can be vernier caliper, and measurement accuracy is higher.
Detailed description of the invention
Fig. 1 is the schematic perspective view of one embodiment of the invention；
Fig. 2 is the main view of the embodiment；
Fig. 3 is the A-A cross-sectional view of Fig. 2；
Fig. 4 is the B-B cross-sectional view of Fig. 2；
Fig. 5 is the C-C cross-sectional view of Fig. 2；
Fig. 6 is the D direction view of Fig. 2；
Appended drawing reference are as follows:
1- crane hook, the upper wirerope of 2-, 3- thrust bearing connecting rod, 4- thrust bearing connector sleeve, 401- through-hole, steel under 5-
Cord, 6- rectangle measuring cylinder, 7- unmanned plane, 701- unmanned plane rocket adapter, 8- measuring scale, 901- blowout patche, 902- seat ring,
10- is adapted to attachment screw.
Specific embodiment
Below in conjunction with drawings and the specific embodiments, the present invention will be further described.
Embodiment 1:
Referring to FIG. 1, FIG. 2 and FIG. 3, the present apparatus include upper wirerope 2, thrust bearing connecting rod 3, thrust bearing connector sleeve 4,
Thrust bearing 9, lower wirerope 5 and rectangle measuring cylinder 6.
Connector of the upper wirerope 2 as the equipment such as the device and crane.The equipment such as crane sling survey by upper wirerope 2
Measure the other components and unmanned plane 7 of device.
Upper 2 top of wirerope connects crane hook 1, the connected thrust bearing connecting rod 3 of lower part axial direction, thrust bearing connecting rod 3
Outside suit thrust bearing connector sleeve 4, is arranged thrust bearing 9 between thrust bearing connecting rod 3 and thrust bearing connector sleeve 4；It pushes away
Power bearing connecting rod 3 is fixedly connected with the blowout patche 901 of thrust bearing 9；The seat ring 902 of thrust bearing 9 is embedded in thrust bearing company
In female connector 4.Thrust bearing connector sleeve 4 is disposed radially the through-hole 401 for passing through lower wirerope 5.
Lower 5 lower part of wirerope setting adaptation attachment screw 10；Lower 5 top of wirerope is fixed after passing through through-hole 401 by rope
Fixed, lower part is connected on unmanned plane rocket adapter 701 by being adapted to attachment screw 10.
Referring to Fig. 4 and Fig. 5, rectangle measuring cylinder 6 is set with outside lower wirerope 5,6 top inner hole of rectangle measuring cylinder is rectangular
Hole, lower part inner hole are taper hole；701 top of unmanned plane rocket adapter is equipped with frustum, 6 lower part taper hole of rectangle measuring cylinder and unmanned plane
The frustum on 701 top of rocket adapter is adapted, and rectangle measuring cylinder 6 is sleeved on the frustum on 701 top of unmanned plane rocket adapter
On.
Measuring scale 8 can be that Steel Ruler can also for measuring distance between lower wirerope 5 and rectangle measuring cylinder 6, measuring scale 8
Think vernier caliper, it is more convenient in order to measure, Steel Ruler is used in the present embodiment.
The working principle of the present apparatus is as follows:
Referring to Fig.1 and Fig. 4, when measurement, the rope end of upper wirerope 2 is hung by crane hook 1, and unmanned plane 7 and measurement are filled
It sets and slings together.At this point, upper 2 Forced rotation of wirerope, due to thrust bearing 9 blowout patche 901 by thrust bearing connecting rod 3 with
Upper wirerope 2 connects, so blowout patche 901 can be rotated with upper wirerope 2, but due to the blowout patche of thrust bearing 9 901 and seat ring 902
It can relatively rotate, therefore the unmanned plane 7 that its 902 lower part of seat ring is connected by lower wirerope 5 will not be rotated with upper wirerope 2, to nothing
After man-machine stabilization, thrust line measured value can be obtained by measuring lower wirerope 5 and the spacing of rectangle measuring cylinder 6 using Steel Ruler.Due to
Unmanned plane is small, stable fast by disturbing, so device measurement is convenient, measurement efficiency is high.When measurement, since measuring cylinder is rectangle survey
Graduated cylinder 6, so measurement can be completed without dedicated scale and rear sight base, measurement process convenient reading, error in reading are small, effectively
Measurement accuracy and efficiency are improved, if rectangle measuring cylinder 6 is higher, it is possible to use Steel Ruler measures upper wirerope 2 and measures with rectangle
The spacing of cylinder 6 obtains thrust line measured value, measures also very convenient.
Embodiment 2:
Referring to figure 5 and figure 6, embodiment 2 is similar to the structure of embodiment 1, distinguishes the rectangle measurement being only that in embodiment 2
6 inner holes of cylinder are that one end end face of square hole is equipped with graduation mark 601.When measurement, by Steel Ruler or the auxiliary of other similar plates
Tool, which directly reads scale, can be completed measurement.
The above is only the embodiment of the present invention, and it is not intended to limit the protection scope of the present invention, all to utilize explanation of the invention
Equivalent structure transformation made by book and accompanying drawing content, is applied directly or indirectly in other relevant technical fields, and is included in
In scope of patent protection of the invention.
Claims (6)
1. a kind of rocket launching unmanned plane thrust line measuring device characterized by comprising
Upper wirerope (2), is sleeved on thrust bearing connecting rod at the thrust bearing connecting rod (3) being axially connected with upper wirerope (2)
(3) external thrust bearing connector sleeve (4), setting pushing away between thrust bearing connecting rod (3) and thrust bearing connector sleeve (4)
Power bearing (9), one end connection thrust bearing connector sleeve (4) other end are used to connect the lower steel of unmanned plane rocket adapter (701)
Cord (5) is sleeved on lower wirerope (5) outside and one end for connecting the rectangle measuring cylinder of unmanned plane rocket adapter (701)
(6)；
For measuring the measuring scale (8) of distance between lower wirerope (5) and rectangle measuring cylinder (6)；
The thrust bearing connecting rod (3) is fixedly connected with the blowout patche (901) of thrust bearing (9)；The seat of the thrust bearing (9)
Circle (902) is embedded in the thrust bearing connector sleeve (4)；
Rectangle measuring cylinder (6) one end inner hole is square hole, and the other end is connect with unmanned plane rocket adapter (701).
2. a kind of rocket launching unmanned plane thrust line measuring device according to claim 1, it is characterised in that: the rectangle
Measuring cylinder (6) inner hole is that one end end face of square hole is equipped with graduation mark (601).
3. a kind of rocket launching unmanned plane thrust line measuring device according to claim 1 or 2, it is characterised in that: described
Lower wirerope (5) lower part setting adaptation attachment screw (10), the lower wirerope (5) are connected to by being adapted to attachment screw (10)
On unmanned plane rocket adapter (701).
4. a kind of rocket launching unmanned plane thrust line measuring device according to claim 3, it is characterised in that: the thrust
Bearing connector sleeve (4) is disposed radially for the through-hole (401) across the lower wirerope (5).
5. a kind of rocket launching unmanned plane thrust line measuring device according to claim 4, it is characterised in that: the measurement
Ruler (8) is Steel Ruler.
6. a kind of rocket launching unmanned plane thrust line measuring device according to claim 4, it is characterised in that: the measurement
Ruler (8) is vernier caliper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910082953.XA CN109625322B (en) | 2019-01-24 | 2019-01-24 | Rocket launching unmanned aerial vehicle thrust line measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910082953.XA CN109625322B (en) | 2019-01-24 | 2019-01-24 | Rocket launching unmanned aerial vehicle thrust line measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109625322A true CN109625322A (en) | 2019-04-16 |
| CN109625322B CN109625322B (en) | 2024-09-03 |
Family
ID=66062450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910082953.XA Active CN109625322B (en) | 2019-01-24 | 2019-01-24 | Rocket launching unmanned aerial vehicle thrust line measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109625322B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398317A (en) * | 2019-08-20 | 2019-11-01 | 中国科学院工程热物理研究所 | Drone center of unmanned aerial vehicle and thrust line deviation measurement device and method |
| CN111504280A (en) * | 2020-04-15 | 2020-08-07 | 成都飞机工业（集团）有限责任公司 | Device and method for measuring distance between gravity center and thrust line of unmanned aerial vehicle |
| CN111776247A (en) * | 2020-06-04 | 2020-10-16 | 核工业北京地质研究院 | System and method for measuring thrust of launching system of gliding unmanned aerial vehicle |
| CN112158357A (en) * | 2020-08-28 | 2021-01-01 | 成都飞机工业（集团）有限责任公司 | Device and method for measuring deviation between thrust line and gravity center of unmanned aerial vehicle booster rocket |
| CN117944917A (en) * | 2024-03-26 | 2024-04-30 | 西安羚控电子科技有限公司 | Unmanned plane thrust line adjusting method |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1239363A (en) * | 1959-07-11 | 1960-08-26 | Vape Sa Ets | Rocket launcher toy |
| GB1217161A (en) * | 1967-03-17 | 1970-12-31 | James Martin | Improvements in vehicle ejection seats |
| DE4243104A1 (en) * | 1991-12-20 | 1993-06-24 | Fmc Corp | Wheel alignment system for measuring alignment angles of wheels |
| JPH07137985A (en) * | 1993-11-16 | 1995-05-30 | Nkk Corp | Wire rope inspection method for rope suspended crane |
| CN201010441Y (en) * | 2007-01-06 | 2008-01-23 | 聂新成 | Steel wire force removing device for crane |
| CN103434650A (en) * | 2013-08-06 | 2013-12-11 | 江西洪都航空工业集团有限责任公司 | Method for correcting thrust line of unmanned aerial vehicle by adopting centroid computation |
| CN104477408A (en) * | 2014-12-01 | 2015-04-01 | 江西洪都航空工业集团有限责任公司 | Self-adjusting unmanned aerial vehicle thrust line measurement and adjustment method |
| CN105836157A (en) * | 2016-04-05 | 2016-08-10 | 浙江大学 | Device for improving precision of hanging and thrusting line and method adopting device |
| CN205707414U (en) * | 2016-04-05 | 2016-11-23 | 浙江大学 | The device of thrust line precision is hung in a kind of raising |
| CN106892130A (en) * | 2017-02-20 | 2017-06-27 | 西安爱生技术集团公司 | A kind of unmanned plane booster rocket adjusts positioner and method |
| CN206857027U (en) * | 2017-06-16 | 2018-01-09 | 中国人民解放军总参谋部第六十研究所 | A kind of unmanned plane debugs hanging mechanism |
| CN107933946A (en) * | 2017-12-11 | 2018-04-20 | 浙江大学 | Unmanned plane two point form rocket assist emitter and its method |
| CN207565862U (en) * | 2017-12-11 | 2018-07-03 | 浙江大学 | Unmanned plane two point form rocket assist emitter |
| CN208223342U (en) * | 2018-05-07 | 2018-12-11 | 中国建筑第六工程局有限公司 | A kind of detection device for cast-in-place concrete floor thickness |
-
2019
- 2019-01-24 CN CN201910082953.XA patent/CN109625322B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1239363A (en) * | 1959-07-11 | 1960-08-26 | Vape Sa Ets | Rocket launcher toy |
| GB1217161A (en) * | 1967-03-17 | 1970-12-31 | James Martin | Improvements in vehicle ejection seats |
| DE4243104A1 (en) * | 1991-12-20 | 1993-06-24 | Fmc Corp | Wheel alignment system for measuring alignment angles of wheels |
| JPH07137985A (en) * | 1993-11-16 | 1995-05-30 | Nkk Corp | Wire rope inspection method for rope suspended crane |
| CN201010441Y (en) * | 2007-01-06 | 2008-01-23 | 聂新成 | Steel wire force removing device for crane |
| CN103434650A (en) * | 2013-08-06 | 2013-12-11 | 江西洪都航空工业集团有限责任公司 | Method for correcting thrust line of unmanned aerial vehicle by adopting centroid computation |
| CN104477408A (en) * | 2014-12-01 | 2015-04-01 | 江西洪都航空工业集团有限责任公司 | Self-adjusting unmanned aerial vehicle thrust line measurement and adjustment method |
| CN105836157A (en) * | 2016-04-05 | 2016-08-10 | 浙江大学 | Device for improving precision of hanging and thrusting line and method adopting device |
| CN205707414U (en) * | 2016-04-05 | 2016-11-23 | 浙江大学 | The device of thrust line precision is hung in a kind of raising |
| CN106892130A (en) * | 2017-02-20 | 2017-06-27 | 西安爱生技术集团公司 | A kind of unmanned plane booster rocket adjusts positioner and method |
| CN206857027U (en) * | 2017-06-16 | 2018-01-09 | 中国人民解放军总参谋部第六十研究所 | A kind of unmanned plane debugs hanging mechanism |
| CN107933946A (en) * | 2017-12-11 | 2018-04-20 | 浙江大学 | Unmanned plane two point form rocket assist emitter and its method |
| CN207565862U (en) * | 2017-12-11 | 2018-07-03 | 浙江大学 | Unmanned plane two point form rocket assist emitter |
| CN208223342U (en) * | 2018-05-07 | 2018-12-11 | 中国建筑第六工程局有限公司 | A kind of detection device for cast-in-place concrete floor thickness |
Non-Patent Citations (1)
| Title |
|---|
| 陈慧杰;: "某型无人机助推火箭推力线偏差影响分析", 电子测试, no. 09, 5 May 2017 (2017-05-05), pages 52 - 55 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398317A (en) * | 2019-08-20 | 2019-11-01 | 中国科学院工程热物理研究所 | Drone center of unmanned aerial vehicle and thrust line deviation measurement device and method |
| CN111504280A (en) * | 2020-04-15 | 2020-08-07 | 成都飞机工业（集团）有限责任公司 | Device and method for measuring distance between gravity center and thrust line of unmanned aerial vehicle |
| CN111776247A (en) * | 2020-06-04 | 2020-10-16 | 核工业北京地质研究院 | System and method for measuring thrust of launching system of gliding unmanned aerial vehicle |
| CN112158357A (en) * | 2020-08-28 | 2021-01-01 | 成都飞机工业（集团）有限责任公司 | Device and method for measuring deviation between thrust line and gravity center of unmanned aerial vehicle booster rocket |
| CN117944917A (en) * | 2024-03-26 | 2024-04-30 | 西安羚控电子科技有限公司 | Unmanned plane thrust line adjusting method |
| CN117944917B (en) * | 2024-03-26 | 2024-06-07 | 西安羚控电子科技有限公司 | Unmanned plane thrust line adjusting method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109625322B (en) | 2024-09-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109625322A (en) | A kind of rocket launching unmanned plane thrust line measuring device | |
| CN104555636B (en) | A kind of swing detecting device of shaft cage guide steel wire rope | |
| CN205861281U (en) | Meter locale calibration system | |
| US10703610B2 (en) | Lifting bracket | |
| CN107037235B (en) | Soft measurement method and measurement device for brake slip quantity | |
| CN104613927A (en) | Method for monitoring rotating angle of deep marine riser | |
| CN208672573U (en) | A kind of downhole detection module, equipment and system | |
| CN110398317A (en) | Drone center of unmanned aerial vehicle and thrust line deviation measurement device and method | |
| CN209617539U (en) | A kind of rocket launching unmanned plane thrust line measuring device | |
| CN106225771A (en) | A kind of aided measurement device for inclinometer | |
| CN108225806A (en) | A kind of drilling machine performance test apparatus | |
| CN204751973U (en) | Lifting hook perpendicularity deviation detection device | |
| CN205483363U (en) | Unmanned aerial vehicle motor power survey head | |
| US10870559B2 (en) | Apparatus and method for measuring rotational angle of sinking platform | |
| CN102561941A (en) | Rotary drilling rig and pore-forming state detection device thereof | |
| CN103822612A (en) | Automatic sliding inclinometer based on bluetooth transmission | |
| CN104034310A (en) | Inclinometer combined with portable electronic equipment and used for data acquisition and transmission | |
| CN209510307U (en) | Drilling depth monitoring device and air drill | |
| CN211426612U (en) | Overhead cable current tester | |
| CN204694388U (en) | Torque measurement one beam | |
| CN103523669A (en) | Crane and method for measuring and calculating height of boom of crane | |
| CN109469473B (en) | Drilling depth monitoring device and pneumatic rock drill | |
| CN203053619U (en) | Polished rod dynamometer | |
| CN206177984U (en) | High -precision degree rotational speed measuring device | |
| CN104677537A (en) | Dynamic torque testing sensor for rotary body |
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 |