CN212363414U - Noise detection device for environmental engineering supervision - Google Patents

Noise detection device for environmental engineering supervision Download PDF

Info

Publication number
CN212363414U
CN212363414U CN202020790467.1U CN202020790467U CN212363414U CN 212363414 U CN212363414 U CN 212363414U CN 202020790467 U CN202020790467 U CN 202020790467U CN 212363414 U CN212363414 U CN 212363414U
Authority
CN
China
Prior art keywords
fixed
detection device
plate
environmental engineering
noise
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.)
Expired - Fee Related
Application number
CN202020790467.1U
Other languages
Chinese (zh)
Inventor
曹敏益
黄越峰
彭永强
谢连雪
林枝
李小虎
李子荣
曹文才
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.)
Guangdong Finance And Trade Construction Engineering Consultant Co ltd
Original Assignee
Guangdong Finance And Trade Construction Engineering Consultant 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 Guangdong Finance And Trade Construction Engineering Consultant Co ltd filed Critical Guangdong Finance And Trade Construction Engineering Consultant Co ltd
Priority to CN202020790467.1U priority Critical patent/CN212363414U/en
Application granted granted Critical
Publication of CN212363414U publication Critical patent/CN212363414U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

The utility model provides an environmental engineering manages and uses noise detection device belongs to noise detection technical field. The noise detection device for environmental engineering supervision comprises a supporting device, a telescopic mechanism and a detection mechanism. Strutting arrangement is including supporting box, electric jar and battery install bin, the electric jar is installed the inside of supporting box, telescopic machanism includes sleeve, bracing piece and transfer line, telescopic inside is fixed with the baffle, the threaded rod runs through the baffle rotates to be connected in telescopic bottom, the bracing piece spiro union is in the surface of threaded rod, detection mechanism includes backup pad, noise detector and roof, the roof sets up noise detector's top surface, the backup pad with through second coupling assembling fixed connection between the roof. The utility model discloses at the in-process that detection device used, can conveniently contract and adjust being convenient for simultaneously and remove, improve the flexibility that detection device used.

Description

Noise detection device for environmental engineering supervision
Technical Field
The utility model relates to a noise detection field particularly, relates to environmental engineering manages and uses noise detection device.
Background
The noise tester is used for noise detection and testing in public places such as work sites, squares and the like. Noise pollution is one of the environmental pollutants with great influence, and high-decibel noise can even cause serious damage to the eardrum of a human body, so that hearing loss and the like are caused. The application of the noise tester can provide decibels of noise to take relevant measures to control and reduce the noise.
At present, current noise detection device for environmental engineering supervision is not convenient for accomodate and remove generally relatively fixed, and the flexibility of using is lower relatively.
SUMMERY OF THE UTILITY MODEL
In order to compensate above not enough, the utility model provides an environmental engineering is managed and is used noise detection device aims at improving environmental engineering and manages and use noise detection device, and relatively fixed is not convenient for accomodate and the problem of removal.
The utility model discloses a realize like this:
the utility model provides an environmental engineering manages and uses noise detection device, including strutting arrangement, telescopic machanism and detection mechanism.
The supporting device comprises a supporting box, an electric cylinder and a battery installation box, the electric cylinder is installed in the supporting box, a movable plate is fixed at the output end of the electric cylinder, a moving member is installed at the bottom of the movable plate, the battery installation box is fixed on the top surface of the supporting box, the telescopic mechanism comprises a sleeve, a threaded rod, a supporting rod and a transmission rod, the sleeve is fixed on the top surface of the battery installation box, a partition plate is fixed in the sleeve, the threaded rod penetrates through the partition plate and is connected to the bottom of the sleeve in a rotating mode, the supporting rod is in threaded connection with the surface of the threaded rod, the transmission rod penetrates through the sleeve in a rotating mode, the end portion of the transmission rod is connected with the threaded rod in a rotating mode through a transmission part, the detection mechanism comprises a supporting plate, a noise detector and a, the noise detector sets up the top surface of backup pad, the roof sets up the top surface of noise detector, the backup pad with through second coupling assembling fixed connection between the roof.
The utility model discloses an in the embodiment, the external fixation of support box has fixed subassembly, fixed subassembly includes engaging lug and rag screw, the engaging lug is fixed the surface of support box, rag screw runs through the engaging lug.
The utility model discloses an in one embodiment, telescopic internal surface upper end is fixed with first stopper, the lower extreme external surface of bracing piece be fixed with first stopper assorted second stopper.
In an embodiment of the present invention, a key of the transmission rod is connected to a rotation portion, and the rotation portion is a hand wheel.
In an embodiment of the present invention, the transmission member includes a first gear and a second gear, the first gear is connected to the other end of the transmission rod, the second gear is connected to the outer surface of the threaded rod, and the first gear is engaged with the second gear.
In an embodiment of the present invention, the top surface of the support rod is fixed with a first connecting component, and the first connecting component is fixed at the bottom of the support plate.
In an embodiment of the present invention, the first connecting component includes a connecting plate and a fixing member, the connecting plate is fixed to the top surface of the supporting rod, the fixing member runs through the connecting plate, and the end portion of the fixing member is screwed to the bottom of the supporting plate.
The utility model discloses an in one embodiment, second coupling assembling includes a screw thread section of thick bamboo and screw thread post, a screw thread section of thick bamboo is fixed the bottom edge of roof, the screw thread post runs through the backup pad spiro union is in the inside of a screw thread section of thick bamboo, the bottom of screw thread post is fixed with the portion of taking.
The utility model discloses an in the embodiment, the backup pad with the surface of roof all seted up with noise detector assorted recess.
In an embodiment of the present invention, the length of the top plate is greater than the length of the supporting plate, and the width of the top plate is greater than the width of the supporting plate.
The utility model has the advantages that: the noise detection device for environmental engineering supervision obtained by the design of the utility model is used, when in use, the noise detector is placed on the top surface of the support plate, then the top plate is clamped on the top surface of the noise detector through the second connecting component so as to fix the noise detector, then the movable plate is driven by the electric cylinder to move downwards to enable the moving piece to be in contact with the ground, then the detection device is moved to a proper position, at the moment, the electric cylinder retracts to retract the moving piece to the inside of the supporting box and then is fixed with the ground through the foundation screws, so that the electric cylinder can be more stable when in use, then the transmission piece is driven to rotate by the transmission rod, so that the threaded rod rotates along with the transmission piece, the supporting rod extends upwards, and in the using process of the detection device, can conveniently contract and adjust being convenient for simultaneously remove, improve the flexibility that detection device used.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view of a first view structure of a noise detection device for environmental engineering supervision according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional structure view of a noise detection device for environmental engineering supervision according to an embodiment of the present invention;
fig. 3 is a schematic view of a second view structure of the noise detection device for environmental engineering supervision according to an embodiment of the present invention;
fig. 4 is the embodiment of the present invention provides a schematic sectional structure diagram of a second connecting component of a noise detection device for environmental engineering supervision.
In the figure: 100-a support device; 110-a support box; 120-electric cylinder; 121-a movable plate; 122-a mover; 130-a battery mounting box; 140-a stationary assembly; 141-a connecting lug; 142-anchor screws; 200-a telescoping mechanism; 210-a sleeve; 211-a separator; 212-a first stopper; 220-a threaded rod; 230-support rods; 231-a second stopper; 240-transmission rod; 241-a rotating part; 250-a transmission; 251-a first gear; 252-a second gear; 260-a first connection assembly; 261-a connecting plate; 262-a fixing member; 300-a detection mechanism; 310-a support plate; 320-a noise detector; 330-a top plate; 340-a second connection assembly; 341-a threaded cylinder; 342-a threaded post; 343-holding part.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Examples
Referring to fig. 1-4, the present invention provides a technical solution: the noise detection device for environmental engineering supervision comprises a supporting device 100, a telescopic mechanism 200 and a detection mechanism 300.
The telescoping mechanism 200 fixes the top surface of the supporting device 100 for adjusting telescoping, and the detecting mechanism 300 is installed at the top surface of the telescoping mechanism 200 for detecting external noise.
Referring to fig. 1-3, the supporting device 100 includes a supporting box 110, an electric cylinder 120 and a battery installation box 130, the electric cylinder 120 is installed inside the supporting box 110, a movable plate 121 is fixed at an output end of the electric cylinder 120, a movable member 122 is installed at a bottom of the movable plate 121, the movable member 122 is a self-locking universal wheel, the battery installation box 130 is fixed at a top surface of the supporting box 110, a storage battery is installed inside the battery installation box 130, and the storage battery is electrically connected with the electric cylinder 120 and a noise detector 320 respectively, so that outdoor detection can be conveniently performed, and detection flexibility is improved.
The outer fixed surface of supporting box 110 has fixed subassembly 140, and fixed subassembly 140 includes engaging lug 141 and rag screw 142, and engaging lug 141 fixes the surface at supporting box 110, and rag screw 142 runs through engaging lug 141, and the setting of engaging lug 141 and rag screw 142 here can make the detection device better fix with ground.
Referring to fig. 1-3, the telescoping mechanism 200 includes a sleeve 210, a threaded rod 220, a support rod 230 and a transmission rod 240, the sleeve 210 is fixed on the top surface of the battery installation case 130, a partition 211 is fixed inside the sleeve 210, the threaded rod 220 penetrates through the partition 211 and is rotatably connected to the bottom of the sleeve 210, here, the bottom of the threaded rod 220 is connected with a bearing in an interference manner, the bearing is embedded at the bottom of the sleeve 210, which facilitates rotation of the threaded rod 220, the support rod 230 is threadedly coupled to the surface of the threaded rod 220, where the support rod 230 may be square in cross-sectional shape, the drive rod 240 is rotated through the sleeve 210, here, the outer surface of the transmission rod 240 is interference-coupled with a bearing, which is embedded on the inner wall of the sleeve 210, so that the transmission rod 240 can be conveniently fixed, meanwhile, the transmission rod 240 is convenient to rotate, and the end of the transmission rod 240 is rotatably connected with the threaded rod 220 through the transmission piece 250.
A first limit block 212 is fixed at the upper end of the inner surface of the sleeve 210, a second limit block 231 matched with the first limit block 212 is fixed on the outer surface of the lower end of the supporting rod 230, and the depth range of the supporting rod 230, which is separated from the sleeve 210, can be prevented by the arrangement of the first limit block 212 and the second limit block 231; one end key of the transmission rod 240 is connected with a rotating part 241, the rotating part 241 is a hand wheel, and the arrangement of the rotating part 241 can conveniently drive the transmission rod 240 to rotate.
The transmission member 250 includes a first gear 251 and a second gear 252, the first gear 251 is keyed on the other end of the transmission rod 240, the second gear 252 is keyed on the outer surface of the threaded rod 220, and the first gear 251 and the second gear 252 are engaged, where the first gear 251 and the second gear 252 are configured to facilitate the transmission rod 240 to drive the threaded rod 220 to rotate.
The top surface of the supporting rod 230 is fixed with a first connecting component 260, the first connecting component 260 is fixed at the bottom of the supporting plate 310, the first connecting component 260 comprises a connecting plate 261 and a fixing part 262, the connecting plate 261 is fixed at the top surface of the supporting rod 230, the fixing part 262 penetrates through the connecting plate 261, the fixing part 262 is a bolt, the end part of the fixing part 262 is screwed at the bottom of the supporting plate 310, and the connecting plate 261 and the fixing part 262 are arranged to facilitate connection between the supporting rod 230 and the supporting plate 310.
Referring to fig. 1 to 4, the detecting mechanism 300 includes a supporting plate 310, a noise detector 320 and a top plate 330, the supporting plate 310 is fixed on the top surface of the supporting rod 230, the noise detector 320 is disposed on the top surface of the supporting plate 310, the top plate 330 is disposed on the top surface of the noise detector 320, and the supporting plate 310 and the top plate 330 are fixedly connected by a second connecting assembly 340.
The second connecting assembly 340 comprises a threaded cylinder 341 and a threaded column 342, the threaded cylinder 341 is fixed at the bottom edge of the top plate 330, the threaded column 342 penetrates through the supporting plate 310 and is screwed inside the threaded cylinder 341, a through hole matched with the threaded column 342 is formed inside the supporting plate 310, a holding part 343 is fixed at the bottom of the threaded column 342, the holding part 343 is a transverse plate, and the threaded cylinder 341 and the threaded column 342 are arranged, so that the noise detector 320 can be conveniently fixed; grooves matched with the noise detector 320 are formed in the surfaces of the supporting plate 310 and the top plate 330, and silica gel pads are arranged inside the grooves, so that when the noise detector is fixed, the supporting plate 310 and the top plate 330 can be prevented from being in direct contact with the noise detector 320, damage to the surface of the noise detector 320 is reduced, the noise detector 320 can be conveniently positioned due to the arrangement of the grooves, and the noise detector 320 can be more conveniently fixed; the length of the top plate 330 is greater than the length of the supporting plate 310, and the width of the top plate 330 is greater than the width of the supporting plate 310, so that the noise detector 320 can be protected from being damaged in rainy weather.
Specifically, the working principle of the noise detection device for environmental engineering supervision is as follows: in use, the noise detector 320 is placed on the top surface of the supporting plate 310, and then the top plate 330 is fastened to the top surface of the noise detector 320 by the second connecting assembly 340, so that the noise detector 320 is fixed, then the movable plate 121 is driven by the electric cylinder 120 to move downwards, so that the movable member 122 is contacted with the ground, then the detection device is moved to a proper position, at this time, the electric cylinder 120 retracts to retract the moving member 122 to the inside of the supporting box 110, and then the moving member is fixed with the ground through the anchor screw 142, so that the device can be more stable when in use, then, the rotating part 241 drives the transmission rod 240 to rotate, so that the transmission member 250 drives the threaded rod 220 to rotate, therefore, the supporting rod 230 extends upwards, so that the detection device can be conveniently retracted and adjusted and is convenient to move in the using process, and the using flexibility of the detection device is improved.
It should be noted that the specific model specifications of the electric cylinder 120 and the noise detector 320 need to be determined by model selection according to the actual specification of the device, and the specific model selection calculation method adopts the prior art, so detailed description is omitted.
The power supply and the principle of the electric cylinder 120 and the noise detector 320 will be clear to a person skilled in the art and will not be described in detail here.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The noise detection device for environmental engineering supervision is characterized by comprising
The supporting device (100) comprises a supporting box (110), an electric cylinder (120) and a battery installation box (130), wherein the electric cylinder (120) is installed inside the supporting box (110), a movable plate (121) is fixed at the output end of the electric cylinder (120), a moving member (122) is installed at the bottom of the movable plate (121), and the battery installation box (130) is fixed on the top surface of the supporting box (110);
the telescopic mechanism (200) comprises a sleeve (210), a threaded rod (220), a supporting rod (230) and a transmission rod (240), the sleeve (210) is fixed on the top surface of the battery installation box (130), a partition plate (211) is fixed inside the sleeve (210), the threaded rod (220) penetrates through the partition plate (211) and is connected to the bottom of the sleeve (210) in a rotating mode, the supporting rod (230) is in threaded connection with the surface of the threaded rod (220), the transmission rod (240) penetrates through the sleeve (210) in a rotating mode, and the end portion of the transmission rod (240) is connected with the threaded rod (220) in a rotating mode through a transmission piece (250);
detection mechanism (300), detection mechanism (300) includes backup pad (310), noise detector (320) and roof (330), backup pad (310) is fixed the top surface of bracing piece (230), noise detector (320) set up the top surface of backup pad (310), roof (330) set up the top surface of noise detector (320), backup pad (310) with through second coupling assembling (340) fixed connection between roof (330).
2. The noise detection device for environmental engineering supervision according to claim 1, wherein a fixing member (140) is fixed to an outer surface of the support box (110), the fixing member (140) comprises an engaging lug (141) and an anchor screw (142), the engaging lug (141) is fixed to the outer surface of the support box (110), and the anchor screw (142) penetrates through the engaging lug (141).
3. The noise detection device for environmental engineering supervision according to claim 1, wherein a first stopper (212) is fixed to the upper end of the inner surface of the sleeve (210), and a second stopper (231) matched with the first stopper (212) is fixed to the outer surface of the lower end of the support rod (230).
4. The noise detecting device for environmental engineering supervision according to claim 1, characterized in that a rotating part (241) is keyed on one end of the transmission rod (240), and the rotating part (241) is a hand wheel.
5. The noise detection device for environmental engineering supervision according to claim 1, characterized in that the transmission member (250) comprises a first gear (251) and a second gear (252), the first gear (251) being keyed on the other end of the transmission rod (240), the second gear (252) being keyed on the outer surface of the threaded rod (220), the first gear (251) and the second gear (252) being meshed.
6. The environmental engineering supervision noise detection device according to claim 1, wherein a first connection member (260) is fixed to the top surface of the support rod (230), and the first connection member (260) is fixed to the bottom of the support plate (310).
7. The environmental engineering supervision noise detection device according to claim 6, wherein the first connection assembly (260) comprises a connection plate (261) and a fixing member (262), the connection plate (261) is fixed on the top surface of the support rod (230), the fixing member (262) penetrates through the connection plate (261), and the end of the fixing member (262) is screwed on the bottom of the support plate (310).
8. The noise detection device for environmental engineering supervision according to claim 1, wherein the second connection assembly (340) comprises a threaded cylinder (341) and a threaded post (342), the threaded cylinder (341) is fixed on the bottom edge of the top plate (330), the threaded post (342) is screwed inside the threaded cylinder (341) through the support plate (310), and a holding part (343) is fixed on the bottom of the threaded post (342).
9. The noise detection device for environmental engineering supervision according to claim 1, wherein the surfaces of the supporting plate (310) and the top plate (330) are both provided with grooves matched with the noise detector (320).
10. The environmental engineering supervision noise detection device according to claim 1, wherein the length of the top plate (330) is greater than the length of the support plate (310), and the width of the top plate (330) is greater than the width of the support plate (310).
CN202020790467.1U 2020-05-13 2020-05-13 Noise detection device for environmental engineering supervision Expired - Fee Related CN212363414U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020790467.1U CN212363414U (en) 2020-05-13 2020-05-13 Noise detection device for environmental engineering supervision

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020790467.1U CN212363414U (en) 2020-05-13 2020-05-13 Noise detection device for environmental engineering supervision

Publications (1)

Publication Number Publication Date
CN212363414U true CN212363414U (en) 2021-01-15

Family

ID=74149276

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020790467.1U Expired - Fee Related CN212363414U (en) 2020-05-13 2020-05-13 Noise detection device for environmental engineering supervision

Country Status (1)

Country Link
CN (1) CN212363414U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113701875A (en) * 2021-07-21 2021-11-26 福建九五检测技术服务有限公司 Noise detection device convenient to carry
CN113928746A (en) * 2021-11-03 2022-01-14 南京苏之晟环保设备有限公司 Piston type air cannon

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113701875A (en) * 2021-07-21 2021-11-26 福建九五检测技术服务有限公司 Noise detection device convenient to carry
CN113928746A (en) * 2021-11-03 2022-01-14 南京苏之晟环保设备有限公司 Piston type air cannon

Similar Documents

Publication Publication Date Title
CN212363414U (en) Noise detection device for environmental engineering supervision
CN102158132B (en) All-dome hydraulic-drive solar tracking system
CN112834716A (en) Hydrology water resource monitoring devices
CN201976040U (en) All-sky hydraulic driving solar energy tracking system
CN216410313U (en) Thing networking deep basal pit ground water level remote monitoring system
CN217931876U (en) Cable fault detector
CN213089308U (en) Combined community security alarm device
CN221198413U (en) Highway bridge subsides detecting instrument
CN218291675U (en) Safety warning device
CN215910799U (en) Water conservancy monitoring device with automatic information acquisition function
CN219909091U (en) Pile foundation detection device
CN221612095U (en) Perpendicularity detection device for quality supervision
CN217607007U (en) Spatial spectrum direction finding antenna capable of adjusting detection direction
CN220690158U (en) Novel signal collector
CN221258424U (en) Multifunctional geographic information mapping device
CN217303881U (en) Portable range unit is used in engineering survey
CN216770463U (en) Fixing device of small deformation radar of tunnel foundation
CN220820245U (en) Satellite tracking device
CN217687188U (en) Three-dimensional scanning device for road settlement measurement
CN221542619U (en) Geological environment detection device
CN220752329U (en) Optical power prediction meteorological environment monitoring equipment
CN217521710U (en) Warning device for power communication maintenance
CN212463117U (en) Adjustable zinc-magnesium-plated light photovoltaic support
CN221055792U (en) Ecological resource remote sensing monitoring device
CN216900925U (en) Navigation detection equipment based on Beidou positioning communication

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20210115

Termination date: 20210513

CF01 Termination of patent right due to non-payment of annual fee