CN210981290U - Wave buoy calibrating device - Google Patents
Wave buoy calibrating device Download PDFInfo
- Publication number
- CN210981290U CN210981290U CN201922306167.1U CN201922306167U CN210981290U CN 210981290 U CN210981290 U CN 210981290U CN 201922306167 U CN201922306167 U CN 201922306167U CN 210981290 U CN210981290 U CN 210981290U
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- fixture
- buoy
- bevel gear
- truss
- ring truss
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Abstract
The utility model discloses a wave buoy calibrating device, a double-ring truss is provided with a fixture support, a horizontal holding mechanism and a linear driving mechanism; the buoy clamp is rotationally arranged on the clamp support; the horizontal holding mechanism comprises a central bevel gear set, a spline shaft, a spline sleeve and a fixture bevel gear set; one bevel gear of the central bevel gear set is coaxially fixed with the center of the double-ring truss, and the other bevel gear is connected with the fixture bevel gear set through a spline shaft; one bevel gear is sleeved on the spline shaft through a spline sleeve, and the other bevel gear is fixedly connected with a fixture connecting shaft of the buoy fixture; the linear driving mechanism comprises a first lead screw driving motor, a first lead screw and a first nut, and the first nut is fixed with the fixture support. According to the wave buoy calibrating device, the reciprocating linear motion of the buoy is realized through the lead screw nut mechanism, and the buoy fixture is always kept in a vertical posture through the two groups of bevel gear sets and the spline shafts; and the screw rod is adopted for transmission, so that the mechanism maintenance process is simplified, and simultaneously, no noise is basically realized.
Description
Technical Field
The utility model relates to a mechanical design field of ocean instrument especially relates to a wave buoy calibrating installation.
Background
The wave buoy calibrating device can simulate wave height change and wave period change, drive the detected buoy to do sine or circular motion, simulate the motion of the wave buoy in the marine environment, and realize the purpose of buoy calibration and adjustment by processing the output data of the buoy and comparing the output data with a set value. The wave buoy calibrating device adopts a double-ring truss structure, the buoy is arranged on the double-ring truss and can move linearly in a reciprocating mode, and therefore the wave height can be adjusted. In addition, the buoy needs to be kept in a vertical state all the time during the rotation of the double-ring truss. Therefore, a special fixture connection mechanism is required to be designed, so that the buoy can move linearly and can keep a horizontal state at the same time.
SUMMERY OF THE UTILITY MODEL
Based on this, the to-be-solved technical problem of the utility model is to provide a wave buoy calibrating installation that can enough make buoy rectilinear movement, can keep the horizontality simultaneously again.
In order to realize the purpose of the utility model, the utility model adopts the following technical scheme to realize:
a wave buoy calibrating device comprises a double-ring truss and a buoy arranged on the double-ring truss, wherein the buoy is fixed on a buoy fixture, and a fixture support, a horizontal holding mechanism and a linear driving mechanism are arranged on the double-ring truss;
the buoy fixture is rotatably arranged on the fixture support through a fixture connecting shaft;
the horizontal holding mechanism comprises a central bevel gear set, a spline shaft, a spline sleeve and a fixture bevel gear set; one bevel gear of the central bevel gear set is coaxially fixed with the center of the double-ring truss, and the other bevel gear is connected with the fixture bevel gear set through a spline shaft; the fixture bevel gear group is arranged in the fixture support, one bevel gear is sleeved on the spline shaft through the spline sleeve, and the other bevel gear is fixedly connected with the fixture connecting shaft of the buoy fixture;
the linear driving mechanism comprises a first lead screw driving motor, a first lead screw and a first nut sleeved on the first lead screw, and the first nut is fixed with the fixture support.
Furthermore, a first slide rail is arranged on the double-ring truss along the axial direction of the spline shaft, and the fixture support is arranged on the first slide rail in a sliding mode through a first slide block.
Further, the fixture support comprises a support frame and a bracket rotatably arranged on the support frame; the support is fixed with a fixture connecting shaft of the buoy fixture, the first nut is fixedly connected with the support frame, the spline shaft penetrates through the support frame, the spline sleeve and the fixture bevel gear group are arranged in the support frame, and the other bevel gear of the fixture bevel gear group is fixed with the support.
Furthermore, the fixture support also comprises a bearing seat and a bearing arranged on the bearing seat, the bearing seat is fixed on the support frame, and the support is rotatably arranged on the support frame through the bearing.
Furthermore, the bracket and the fixture connecting shaft are fixed through a lock pin.
Furthermore, the double-ring truss comprises a south ring truss and a north ring truss, the south ring truss is connected with a south ring half shaft, and the south ring half shaft is connected with the truss driving mechanism through a half shaft bearing seat; the north ring truss is connected with a north ring half shaft and is fixed through a half shaft bearing seat; the horizontal holding mechanism is arranged on the inner side of the north ring truss; the two linear driving mechanisms are respectively arranged on the inner sides of the south ring truss and the north ring truss.
Furthermore, the south ring truss and the north ring truss respectively comprise an outer ring and a cross-shaped rotating main arm connected with the outer ring, and the first slide rail is arranged on the rotating main arm.
Further, the dicyclo truss is provided with counterweight mechanism, counterweight mechanism includes counterweight block subassembly, drive counterweight block subassembly linear motion's counter weight moving mechanism, counterweight block subassembly with the buoy for the both sides are located to the rotatory axis of dicyclo truss branch, counterweight block subassembly with the buoy is located same sliding plane.
Furthermore, the counterweight moving mechanism comprises a second lead screw, a second nut sleeved on the second lead screw, and a second lead screw driving motor for driving the second lead screw, wherein the second nut is fixedly connected with the counterweight block assembly; the balance weight moving mechanisms are arranged in two numbers and symmetrically arranged on the inner sides of the south ring truss and the north ring truss.
Further, the balancing weight component comprises a connecting rod and a balancing weight arranged on the connecting rod, and two ends of the connecting rod are fixed on the second nut through the balancing weight support frame respectively.
Compared with the prior art, the utility model discloses an advantage is with positive effect:
according to the wave buoy calibrating device, the reciprocating linear motion of the buoy is realized through the lead screw nut mechanism, and the buoy fixture is always kept in a vertical posture when rotating along with the truss through the central bevel gear set, the spline shaft and the fixture bevel gear set which are fixed by the truss; by adopting the lead screw transmission, the buoy wave height is adjusted quickly and accurately, the maintenance flow of the mechanism is simplified, and simultaneously, no noise is basically realized.
Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when read in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the wave buoy calibration device of the present invention;
FIG. 2 is a schematic structural view of the fixing of the south ring half shaft in the wave buoy calibrating device of the present invention;
fig. 3 is a schematic structural diagram of a horizontal holding mechanism and a linear driving mechanism of the wave buoy calibrating device of the present invention;
FIG. 4 is an enlarged view of FIG. 3 at the clip mount;
fig. 5 is an assembly view of the buoy and the buoy fixture in the wave buoy calibrating device of the present invention;
fig. 6 is a schematic structural view of a level maintaining mechanism, a linear driving mechanism and a counterweight mechanism in the wave buoy calibrating device of the present invention;
fig. 7 is a schematic structural view of a counterweight mechanism of the wave buoy calibration device of the present invention;
description of reference numerals:
a double-ring truss 110; a south ring truss 111; a north loop truss 112; a truss drive mechanism 120; rotating the main arm 113; a south ring half shaft 131; a north ring half shaft 132; a rotary encoder 140; an external gear 150; a first slide rail 160; a second slide rail 170;
a float 200;
a float fixture 300; a fixture connecting shaft 350; radial pin holes 351, locking pins 360;
a jig support 400; a pedestal frame 410; a bracket 420; a bearing housing 430;
a horizontal holding mechanism 500; a center bevel gear set 510; a first bevel gear 511; a second bevel gear 512; a spline shaft 520; a spline housing 530; a fixture bevel gear set 540; a third bevel gear 541; a fourth bevel gear 542;
a linear drive mechanism 600; a first lead screw drive motor 610; a first lead screw 620; a first nut 630;
a weight mechanism 700; a weight block assembly 710; a weight block 711; a connecting rod 712; a second lead screw 720; a second lead screw drive motor 740; a counterweight pedestal frame 750;
a truss limiting mechanism 800; a support column 810; the jaws 820 are retained.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1-7, the present invention is an embodiment of the wave buoy verification apparatus. As shown in fig. 1, the wave buoy calibrating device adopts a double-ring truss 110 and a two-hollow half-axle body structure, the double-ring truss 110 is mounted on a mounting platform, and a north-south double-ring space truss structure is adopted, and comprises a south-ring truss 111 and a north-ring truss 112. The south ring truss 111 and the north ring truss 112 form a cross-shaped rotating main arm 113 by 4 channel steels, 8 channel steels are uniformly distributed around the rotating main arm 113 to form a circular ring sector-shaped rotating auxiliary arm, an outer ring is formed by splicing 4 arc channel steels into a circular ring, and a middle auxiliary plate is formed by two groups of large and small spliced circular ring plates. The south ring truss 111 and the north ring truss 112 are connected by tie rods and diagonal draw bars. All the parts are connected through bolts, and the key connecting parts are welded after being assembled.
South ring truss 111 connects south ring semi-axis 131, and south ring semi-axis 131 passes through the semi-axis bearing frame to be fixed, and south ring semi-axis 131 is connected with truss actuating mechanism 120, and truss actuating mechanism 120 includes stopper, clutch and reduction gear motor, and it is rotatory to drive dicyclo truss 110 through truss actuating mechanism 120. The north ring truss 112 is connected with a north ring half shaft 132, the north ring half shaft 132 is fixed through a half shaft bearing seat, a through hole slip ring penetrates through the outer side of the half shaft bearing seat, maintenance and replacement are facilitated, a motor and a sensor in the truss are powered through a hollow shaft, and the rotary encoder 140 measures the running period and the speed of the truss through a group of external gear 150 connected with the half shaft.
The buoy 200 is arranged between the south ring truss 111 and the north ring truss 112 of the double-ring truss 110, as shown in fig. 5, the buoy 200 is fixed on the buoy fixture 300, the buoy fixture 300 is provided with a fixture connecting shaft 350, as shown in fig. 3, the double-ring truss 110 is provided with a fixture support 400, the buoy fixture 300 is rotatably arranged on the fixture support 400 through the fixture connecting shaft 350, and the fixture support 400 can slide along the radius direction of the double-ring truss 110.
As shown in fig. 3, the double-ring truss 110 is further provided with a horizontal holding mechanism 500 for holding the buoy 200 in a horizontal state, and a linear driving mechanism 600 for linearly moving the buoy 200 in a radial direction of the double-ring truss 110. The horizontal holding mechanism 500 and the linear driving mechanism 600 are controlled by a controller on the double-ring truss 110. In the present embodiment, the horizontal holding mechanism 500 is provided inside the north loop truss 112, and is fixed to the main rotating arm 113; two linear driving mechanisms 600 are provided, which are respectively provided inside the south ring truss 111 and the north ring truss 112 and are fixed to the main rotary arm 113.
Specifically, the linear driving mechanism 600 includes a first lead screw driving motor 610, a first lead screw 620, and a first nut 630 sleeved on the first lead screw, and the first nut 630 is fixed to the fixture support 400. The first screw 620 is driven by the first screw driving motor 610 to rotate, so that the first nut 630 drives the fixture support 400 to perform reciprocating linear movement, and further drives the buoy 200 to perform linear reciprocating movement.
The horizontal retention mechanism 500 includes a center bevel gear set 510, a spline shaft 520, a spline housing 530, and a fixture bevel gear set 540. The central bevel gear set 510 includes a first bevel gear 511 and a second bevel gear 512 that mesh. The first bevel gear 511 is coaxially arranged with the center of the double-ring truss 110, passes through the hollow north-ring half shaft 132 of the north-ring truss 112 through a connecting shaft, and is fixed on the outer side of the north-ring truss 112, so that the first bevel gear 511 is ensured to be in a constant state all the time. Second bevel gear 512 is connected to fixture bevel gear set 540 via spline shaft 520. Referring to fig. 4, chuck bevel gear set 540 is disposed in chuck support 400 and includes a third bevel gear 541 and a fourth bevel gear 542 that mesh. The third bevel gear 541 is sleeved on the spline shaft 520 through a spline housing 530, and the fourth bevel gear 542 is fixedly connected with the fixture connecting shaft 350 of the float fixture 300. When fixture mount 400 moves linearly back and forth, spline housing 530 slides left and right over spline shaft 520, ensuring that fixture bevel gear set 540 in fixture mount 400 is in phase with center bevel gear set 510 at the center of the truss. When the double-ring truss 110 rotates, the central bevel gear set 510 at the center of the truss remains stationary, and the fixture bevel gear set 540 transferred to the fixture holder 400 through the spline shaft 520 also remains relatively stationary. So that the float holder 300 and the float 200 can maintain both the reciprocating linear motion and the horizontal state.
The wave buoy calibrating device realizes the reciprocating linear motion of the buoy 200 through the screw rod nut mechanism, and realizes that the buoy fixture 300 always keeps a vertical posture when rotating along with a truss through the central bevel gear set 510, the spline shaft 520 and the fixture bevel gear set 540 which are fixed by the truss; by adopting the screw transmission, the quick and accurate adjustment of the wave height of the buoy 200 is ensured, the maintenance process of the mechanism is simplified, and simultaneously, no noise is basically realized.
In order to guide the sliding movement of the chuck holder 400, a first slide rail 160 is provided on the double-ring truss 110 in the axial direction of the spline shaft 520, and the chuck holder 400 is slidably provided on the first slide rail 160 by a first slider. In the present embodiment, the first slide rail 160 is disposed on the main rotating arm 113.
As shown in fig. 4, jig support 400 includes a support frame 410, a bracket 420, a bearing housing 430, and a bearing. The bearing is disposed on the bearing seat 430, the bearing seat 430 is fixed on the supporting seat frame 410, and the supporting frame 420 is rotatably disposed on the supporting seat frame 410 through the bearing. The bracket 420 is fixed to the clip coupling shaft 350 of the float clip 300. The first nut 630 is fixedly connected to the bracket frame 410, and when the first lead screw rotates, the first nut 630 drives the bracket 420 to slide. The spline shaft 520 passes through the holder frame 410, the spline housing 530 and the fixture bevel gear set 540 are disposed in the holder frame 410, and the fourth bevel gear 542 of the fixture bevel gear set 540 is fixed to the holder 420. When the spline shaft 520 rotates, the spline housing 530 and the third bevel gear 541 are driven to rotate, the fourth bevel gear 542 is driven to rotate, the bracket 420 is driven to rotate, and the buoy fixture 300 and the buoy 200 are driven to rotate, so that the buoy 200 is kept in a horizontal posture.
The bracket 420 and the fixture connecting shaft 350 are fixed by a locking pin 360. The fixture connecting shaft 350 is provided with a radial pin hole 351 which is fixed with the fixture support 400 through a lock pin 360, so that the buoy fixture 300 is greatly convenient to mount on the basis of meeting the safety requirement.
Referring to fig. 6 and 7, a weight mechanism 700 is further provided on the double-ring truss 110. The counterweight mechanism 700 includes a counterweight block assembly 710 and a counterweight moving mechanism for driving the counterweight block assembly 710 to move linearly, the counterweight block assembly 710 and the buoy 200 are respectively disposed at two sides relative to a rotation central axis of the double-ring truss 110, the counterweight block assembly 710 and the buoy 200 are located on a same sliding plane, that is, the counterweight block assembly 710 and the buoy 200 are located on a plane of the double-ring truss 110 with the same diameter. According to the weight of the buoy 200 and the current position of the buoy 200, the counterweight block assembly 710 is driven to slide through the counterweight moving mechanism, the position of the counterweight block assembly 710 can be adjusted, automatic counterweight is realized, and the workload of operators is greatly reduced.
As shown in fig. 7, the counterweight moving mechanism includes a second lead screw 720, a second nut sleeved on the second lead screw 720, a second lead screw driving motor 740 for driving the second lead screw 720, and the second nut is fixedly connected to the counterweight block assembly 710; the two counterweight moving mechanisms are symmetrically arranged on the inner sides of the main rotating arms 113 of the south ring truss 111 and the north ring truss 112. The balancing weight component 710 is driven to move through the lead screw nut mechanism, and the structure is simple and noiseless.
The weight block assembly 710 includes a connecting rod 712 and a weight block 711 disposed on the connecting rod 712, and both ends of the connecting rod 712 are fixed to the second nuts through weight bearing frames 750, respectively.
The weight block 711 is detachably connected to the connecting rod 712. The weight block 711 is a modular weight to accommodate different weight specifications of the buoy 200. In this embodiment, the weight block 711 includes two opposite counterweight halves, and the two counterweight halves are fastened and sleeved on the connecting rod 712 by screws.
In order to guide the sliding motion of the counterweight assembly 710, the second slide rail 170 is disposed on the main rotating arm 113 of the double-ring truss 110, and the second slide rail 170 and the first slide rail 160 are symmetrically disposed with respect to the rotation axis of the double-ring truss 110. The counterweight bracket 420 is slidably disposed on the second slide rail 170 through the second slider.
In order to accurately realize the automatic counterweight function, an angle detection device is further arranged on the double-ring truss 110, the angle detection device can measure the swing angle of the double-ring truss 110 in the counterweight process, and then the controller controls the counterweight moving mechanism to act. In this embodiment, the angle detecting device is a rotary encoder 140, and the rotary encoder 140 is used to measure the rotation speed of the truss and is used to measure the angle value of the truss during the automatic leveling process of the counterweight.
The first lead screw driving motor 610 and the second lead screw driving motor 740 are both provided with position encoders, and can feed back the positions of the buoy 200 and the counterweight block assembly 710 at any time.
The wave buoy verification device further comprises a truss limiting mechanism 800, and the truss limiting mechanism 800 is used for limiting the double-ring truss 110 within a certain swing range. As shown in fig. 7, the truss limiting mechanism 800 includes a supporting column 810 fixed on the mounting platform and a telescopic limiting claw 820 disposed on the supporting column 810, and after the limiting claw 820 extends out, the rotating main arm 113 can swing within the up-and-down range defined by the limiting claw 820.
The specific operation method of the automatic counterweight is as follows:
when automatic counterweight is required, the main rotating arm 113 with the buoy 200 and the counterweight block assembly 710 is kept in a horizontal state, and the double-ring truss 110 is in a static state. The truss limiting mechanism 800 limits the swing range of the main rotating arm 113 to ± 15 °. Then, the controller controls the position of the movable counterweight block assembly 710, the encoder measures the swing position of the main rotating arm 113 in real time, and the main rotating arm 113 is finally in a range of +/-0.3 degrees through closed-loop control, namely, enters a balanced state, so that the position movement of the counterweight block assembly 710 can be stopped, and the automatic counterweight process is completed. Then the limit claws 820 of the truss limit mechanism 800 retract to the original state, and the double-ring truss 110 is in a state to be rotated.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or that equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention, which is claimed.
Claims (10)
1. A wave buoy calibrating device comprises a double-ring truss and a buoy arranged on the double-ring truss, wherein the buoy is fixed on a buoy fixture, and the wave buoy calibrating device is characterized in that the double-ring truss is provided with a fixture support, a horizontal holding mechanism and a linear driving mechanism;
the buoy fixture is rotatably arranged on the fixture support through a fixture connecting shaft;
the horizontal holding mechanism comprises a central bevel gear set, a spline shaft, a spline sleeve and a fixture bevel gear set; one bevel gear of the central bevel gear set is coaxially fixed with the center of the double-ring truss, and the other bevel gear is connected with the fixture bevel gear set through a spline shaft; the fixture bevel gear group is arranged in the fixture support, one bevel gear is sleeved on the spline shaft through the spline sleeve, and the other bevel gear is fixedly connected with the fixture connecting shaft of the buoy fixture;
the linear driving mechanism comprises a first lead screw driving motor, a first lead screw and a first nut sleeved on the first lead screw, and the first nut is fixed with the fixture support.
2. The wave buoy calibrating device as claimed in claim 1, wherein the double-ring truss is provided with a first slide rail along the axial direction of the spline shaft, and the fixture support is slidably provided on the first slide rail through a first slide block.
3. The wave buoy verification device as claimed in claim 2, wherein the fixture mount comprises a support frame and a bracket rotatably disposed on the support frame; the support is fixed with a fixture connecting shaft of the buoy fixture, the first nut is fixedly connected with the support frame, the spline shaft penetrates through the support frame, the spline sleeve and the fixture bevel gear group are arranged in the support frame, and the other bevel gear of the fixture bevel gear group is fixed with the support.
4. The wave buoy verification device as claimed in claim 3, wherein the fixture support further comprises a bearing seat and a bearing arranged on the bearing seat, the bearing seat is fixed on the support frame, and the support is rotatably arranged on the support frame through the bearing.
5. The wave buoy verification device as claimed in claim 4, wherein the bracket and the fixture connecting shaft are fixed by a locking pin.
6. The wave buoy verification device as claimed in claim 5, wherein the double-ring truss comprises a south ring truss and a north ring truss, the south ring truss is connected with a south ring half shaft, and the south ring half shaft is connected with a truss driving mechanism through a half shaft bearing seat; the north ring truss is connected with a north ring half shaft and is fixed through a half shaft bearing seat; the horizontal holding mechanism is arranged on the inner side of the north ring truss; the two linear driving mechanisms are respectively arranged on the inner sides of the south ring truss and the north ring truss.
7. The wave buoy verification device as claimed in claim 6, wherein the south ring truss and the north ring truss respectively comprise an outer ring and a cross-shaped main rotating arm connected to the outer ring, and the first slide rail is disposed on the main rotating arm.
8. The wave buoy calibrating apparatus as claimed in claim 6, wherein the double ring truss is provided with a weight mechanism, the weight mechanism comprises a weight block assembly and a weight moving mechanism for driving the weight block assembly to move linearly, the weight block assembly and the buoy are respectively arranged at two sides relative to a rotation central axis of the double ring truss, and the weight block assembly and the buoy are located on the same sliding plane.
9. The wave buoy verification device as claimed in claim 8, wherein the counterweight moving mechanism comprises a second lead screw, a second nut sleeved on the second lead screw, a second lead screw driving motor driving the second lead screw, and the second nut is fixedly connected with the counterweight assembly; the balance weight moving mechanisms are arranged in two numbers and symmetrically arranged on the inner sides of the south ring truss and the north ring truss.
10. The wave buoy verification device as claimed in claim 9, wherein the weight block assembly comprises a connecting rod and a weight block disposed on the connecting rod, and both ends of the connecting rod are respectively fixed on the second nuts through weight support frames.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922306167.1U CN210981290U (en) | 2019-12-19 | 2019-12-19 | Wave buoy calibrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922306167.1U CN210981290U (en) | 2019-12-19 | 2019-12-19 | Wave buoy calibrating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210981290U true CN210981290U (en) | 2020-07-10 |
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ID=71461273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922306167.1U Expired - Fee Related CN210981290U (en) | 2019-12-19 | 2019-12-19 | Wave buoy calibrating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210981290U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110879074A (en) * | 2019-12-19 | 2020-03-13 | 国家***北海标准计量中心 | Wave buoy calibrating device |
-
2019
- 2019-12-19 CN CN201922306167.1U patent/CN210981290U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110879074A (en) * | 2019-12-19 | 2020-03-13 | 国家***北海标准计量中心 | Wave buoy calibrating device |
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Granted publication date: 20200710 Termination date: 20211219 |