CN117308737A - Gate opening monitoring device - Google Patents
Gate opening monitoring device Download PDFInfo
- Publication number
- CN117308737A CN117308737A CN202311303820.3A CN202311303820A CN117308737A CN 117308737 A CN117308737 A CN 117308737A CN 202311303820 A CN202311303820 A CN 202311303820A CN 117308737 A CN117308737 A CN 117308737A
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- opening
- pointer
- gate
- monitoring
- ruler
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 17
- 238000012544 monitoring process Methods 0.000 claims abstract description 55
- 230000007246 mechanism Effects 0.000 claims abstract description 32
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 238000005452 bending Methods 0.000 claims description 4
- 239000012780 transparent material Substances 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000033001 locomotion Effects 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
- G01B5/06—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness
- G01B5/061—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness height gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
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Abstract
The invention relates to the technical field of hydraulic engineering and measurement, in particular to a gate opening monitoring device. The gate opening monitoring device comprises a monitoring pointer mechanism and an opening indicating mechanism; the monitoring pointer mechanism comprises a monitoring pointer and a guide rail; the guide rail can be arranged on the sluice wing wall, one end of the pointer is arranged at the end part of the sluice far away from the bottom shaft, and the other end of the pointer is movably arranged in the guide rail; the opening indicating mechanism comprises a traction structure, an opening pointer and an opening ruler; the opening ruler is horizontally arranged and extends along the horizontal direction, and the opening pointer is movably matched with the opening ruler; the opening pointer is connected with the monitoring pointer through the traction structure, and the monitoring pointer can drive the opening pointer to synchronously move along the length direction of the opening ruler so as to measure the opening angle and the opening height of the gate. Therefore, the opening degree of the gate can be conveniently and rapidly measured, and the opening degree measurement of the angle and the height can be simultaneously completed.
Description
Technical Field
The invention relates to the technical field of hydraulic engineering and measurement, in particular to a gate opening monitoring device.
Background
The sluice is a low-head hydraulic building which is built on river channels and utilizes the sluice to control flow and regulate water level. The degree of gate opening (hereinafter referred to as gate opening) is decisive for upstream water level control and flow regulation. Besides, the gate opening is an important parameter for flow test of the hydraulic building method, and the gate opening, the upstream water level and the downstream water level are monitored to rapidly calculate the gate passing flow, so that the method is the most widely applied method in the water quantity scheduling and metering process. The existing gate opening is mainly aimed at a flat plate lifting type gate, and the existing gate opening is connected with a gate plate to measure the opening height of the gate. For example, the patent CN201510097434.2 discloses a water conservancy gate opening monitoring device, which measures the gate opening by means that one end of a measuring rope passes through a pulley to be connected to the upper end of a heavy hammer, the heavy hammer is arranged in an inner cavity of a graduated scale, and the other end of the measuring rope is fixedly connected to a lifting lug arranged on a gate. Namely, the gate and the weight are respectively connected through the measuring rope, and the lifting height of the gate is shown through the lifting of the weight, so that the height opening of the gate is obtained. However, the opening device has large weight and large volume, and the scale arranged vertically is inconvenient to read, so that popularization and use are limited.
On the other hand, because the bottom shaft drives the driving action of the flap gate (such as a steel dam gate) to turn over, the bottom shaft part of the flap gate is always close to the gate bottom, the gate opening of the heavy hammer is not applicable, and the prior art does not have a better opening measuring device for the bottom shaft drives the flap gate. And there is no device capable of measuring both the angle and the height opening simultaneously in the prior art.
Disclosure of Invention
The invention aims to provide a gate opening monitoring device, which can conveniently and quickly measure the opening of a gate and can simultaneously measure the opening of an angle and a height.
Embodiments of the invention may be implemented as follows:
in a first aspect, the invention provides a gate opening monitoring device, which works in cooperation with a gate, wherein the gate is turned up and down through a bottom shaft and comprises a monitoring pointer mechanism and an opening indicating mechanism;
the monitoring pointer mechanism comprises a monitoring pointer and a guide rail; the guide rail can be arranged on the sluice wing wall, one end of the pointer is arranged at the end part of the sluice far away from the bottom shaft, and the other end of the pointer is movably arranged in the guide rail;
the opening indicating mechanism comprises a traction structure, an opening pointer and an opening ruler;
the opening ruler is horizontally arranged and extends along the horizontal direction, and the opening pointer is movably matched with the opening ruler;
the opening pointer is connected with the monitoring pointer through the traction structure, and along with the opening of the gate, the monitoring pointer can drive the opening pointer to synchronously move along the length direction of the opening ruler so as to measure the opening angle and the opening height of the gate.
In an alternative embodiment, the monitoring pointer comprises a first column and a second column which are perpendicular to each other, the first column is embedded in the guide rail, and the second column is connected with the gate.
In an alternative embodiment, the monitoring pointer is made of a steel rod.
In an alternative embodiment, the guide rail has a recess closed at the bottom and open at the top, into which recess the opening index is embedded.
In an alternative embodiment, the guide rail extends in an arc shape along the bottom axis of the gate as a center of a circle.
In an alternative embodiment, the traction structure further comprises an elastic wire takeup and a traction rope;
one end of the haulage rope is arranged on the monitoring pointer, and the other end of the haulage rope is connected with the opening pointer through the elastic wire winder; and the elastic wire winding device can keep the traction rope in a tensioning state all the time.
In an alternative embodiment, the opening indicating mechanism further comprises at least one diverting pulley;
the diverting pulley cooperates with the traction rope such that the traction rope can be wound around the diverting pulley and such that the traction rope is arranged in the direction of extension of the guide rail.
In an alternative embodiment, the opening ruler comprises a first ruler surface and a second ruler surface which are connected with each other, and an included angle is formed between the first ruler surface and the second ruler surface;
the first scale surface is configured to score a plurality of height scales and the second scale surface is configured to score a plurality of angle scales.
In an alternative embodiment, the opening ruler is made of transparent materials.
In an alternative embodiment, the opening pointer includes a first portion and a second portion that remain bent; the bending angle of the opening pointer is the same as the included angle of the opening ruler;
the first portion corresponds to the first face and the second portion corresponds to the second face.
The beneficial effects of the embodiment of the invention include, for example:
the monitoring pointer mechanism and the opening indicating mechanism of the gate opening monitoring device are matched with each other to realize real-time measurement of the gate opening. Wherein the monitor pointer of the monitor pointer mechanism is movably arranged in the guide rail, and the monitor pointer is connected with the gate so that the monitor pointer can move in the guide rail along with the turning of the gate. The opening pointer of the opening indicating mechanism is connected with the monitoring pointer under the cooperation of the traction structure, so that the opening pointer can move along with the movement of the monitoring pointer, and further the displacement of the gate is shown through the displacement of the opening pointer. Meanwhile, the opening pointer can drive the synchronous movement along the length direction of the opening ruler to measure the opening angle and the opening height of the gate. In addition, the opening ruler is horizontally arranged and extends along the horizontal direction, and compared with a vertical arrangement mode, the horizontal opening ruler is small in occupied space and convenient to read, and river flood and landscape environment are not affected. In conclusion, the gate opening monitoring device of the scheme has the advantages of simple structure and convenience in operation, and can be suitable for opening monitoring of steel dam gates, hole-connecting steel plate gates, hinge gates and air shield gates.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a gate opening monitoring apparatus according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a monitoring pointer mechanism of a gate opening monitoring device according to an embodiment of the present invention;
fig. 3 is a schematic structural view of an opening indicating mechanism of the gate opening monitoring device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another view angle of the opening indicating mechanism according to the embodiment of the present invention.
Icon: 21-wing walls; 22-gate; 23-a bottom shaft; 010-gate opening monitoring means; 100-monitoring a pointer mechanism; 110-monitoring a pointer; 111-a first column; 112-second column; 120-guide rails; 200-opening indicating mechanism; 210-a traction structure; 211-an elastic wire winder; 212-pulling ropes; 220-opening degree pointer; 221-a first part; 222-a second portion; 230-opening degree ruler; 231-a first scale surface; 232-a second scale surface; 240-diverting pulley.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
Fig. 1 is a schematic structural view of a gate opening monitoring apparatus 010 according to the present embodiment of the invention, and fig. 2 is a sectional view taken along A-A in fig. 1.
Referring to fig. 1 and 2, the present embodiment provides a gate opening monitoring device 010, which cooperates with a gate 22, and the gate 22 is turned upside down by a bottom shaft 23, and includes a monitoring pointer mechanism 100 and an opening indicating mechanism 200;
the monitor pointer mechanism 100 includes a monitor pointer 110 and a guide rail 120; the guide rail 120 can be arranged on the sluice wing wall 21, one end of the pointer is arranged at the end of the sluice 22 far from the bottom shaft 23, and the other end is movably arranged in the guide rail 120;
the opening indicating mechanism 200 includes a traction structure 210, an opening pointer 220, and an opening scale 230;
the opening ruler 230 is horizontally arranged and extends along the horizontal direction, and the opening pointer 220 is movably matched with the opening ruler 230;
the opening pointer 220 is connected with the monitoring pointer 110 through the traction structure 210, and along with the opening of the gate 22, the monitoring pointer 110 can drive the opening pointer 220 to synchronously move along the length direction of the opening ruler 230 so as to measure the opening angle and the opening height of the gate 22.
The monitor pointer 110 of the monitor pointer mechanism 100 of such a gate opening monitor apparatus 010 is movably disposed in the guide rail 120, and the monitor pointer 110 is connected to the gate 22 such that the monitor pointer 110 can move in the guide rail 120 with the turning of the gate 22. The opening pointer 220 of the opening indicating mechanism 200 is connected with the monitor pointer 110 in cooperation with the traction structure 210, so that the opening pointer 220 can move along with the movement of the monitor pointer 110, and thus the displacement of the shutter 22 is shown by the displacement of the opening pointer 220. Meanwhile, the opening pointer 220 can synchronously move along the length direction of the opening ruler 230 under the driving of the monitoring pointer 110 so as to measure the opening angle and the opening height of the gate 22. In addition, the opening ruler 230 is horizontally arranged and extends along the horizontal direction, and compared with a vertical arrangement mode, the horizontal opening ruler 230 is small in occupied space and convenient to read, and river flood and landscape environment are not affected. So, gate aperture monitoring devices 010 of this scheme has simple structure, convenient operation, can be adapted to the aperture monitoring of steel dam floodgate, yoke plate floodgate, hinge floodgate, air shield floodgate.
Fig. 3 is a schematic structural view of an opening indicating mechanism 200 of the shutter opening monitoring device 010 in the present embodiment of the invention, and fig. 4 is a sectional view taken along the direction B-B in fig. 3. As can be seen from the figure, the shutter 22 in this embodiment is a bottom shaft driven flap gate. I.e. the bottom shaft 23 is partly always close to the gate bottom, the gate 22 is turned up to close the gate by turning around the bottom shaft 23 or turned down to open the gate.
Referring to fig. 1 to 4, in the present embodiment of the invention, the monitor pointer 110 includes a first column 111 and a second column 112 perpendicular to each other, the first column 111 is embedded in the guide rail 120, and the second column 112 is connected to the gate 22. Further, the monitoring pointer 110 is an "L" shaped cylindrical steel bar, the end of which is vertically welded to the top of the gate 22, and the head of which is drilled for installing the traction structure 210. As can be seen, the first post 111 is in the same plane as the surface of the gate 22.
It should be noted that, the monitor pointer 110 is made of a steel rod, which is only an example, and in other embodiments of the present invention, the monitor pointer 110 may be made of plastic, wood, or the like, which is not limited herein.
It can also be seen from the figure that the rail 120 has a closed bottom, open top recess into which the monitor pointer 110 is inserted. The guide rail 120 is mainly used for protecting the monitoring pointer 110 and reducing the influence of water flow flushing on the monitoring precision. Specifically, the guide rail 120 is a "C" shaped metal groove, the radian is adapted to the running track of the monitor pointer 110, and the back is fixed to the sluice wing wall 21 by bolts.
It will be appreciated that in other embodiments of the present invention, the rail 120 may also be U-shaped or the like, so long as the monitor pointer 110 is capable of being embedded in the rail 120, as just one example. Further, the end of the first column 111 of the monitoring pointer 110 remote from the second column 112 can be provided with two elastic support balls (not shown) symmetrically arranged at the top and bottom of the first column 111. Specifically, the elastic supporting ball comprises a ball head and an elastic piece, the ball head is arranged on the first column 111 through the elastic piece, and the ball head can be propped against the side wall of the groove of the guide rail 120, so that the monitoring pointer 110 can be always located at the center of the guide rail 120, interference of the side wall of the guide rail 120 to the monitoring pointer 110 is avoided, and smoothness and sensitivity of opening indication are further ensured.
In the present embodiment of the present invention, the guide rail 120 extends in an arc shape along the bottom axis 23 of the shutter 22 as a center. I.e. the rail 120 is quarter-circular arc shaped. This ensures an adaptation with the monitor pointer 110.
As can also be seen in fig. 3 and 4, the traction structure 210 further comprises an elastic wire takeup 211 and a traction rope 212; one end of the haulage rope 212 is arranged on the monitoring pointer 110, and the other end is connected with the opening pointer 220 through an elastic wire winder 211; and the elastic wire takeup 211 can keep the traction rope 212 in a tensioned state all the time. This ensures that the opening pointer 220 can slide in the opening ruler 230 in synchronization with the movement of the monitor pointer 110.
Optionally, the elastic wire takeup 211 is a retraction spring. The elastic wire takeup 211 can tighten the traction rope 212 by using a built-in spring. The hauling cable 212 is a steel wire rope, and is laid according to a preset route, and the front end of the hauling cable 212 passes through the monitoring pointer 110 and is fixed.
Further, in the present embodiment of the invention, the opening indicating mechanism 200 further includes at least one diverting pulley 240; diverting pulley 240 cooperates with the traction ropes 212 to enable the traction ropes 212 to wrap around the diverting pulley 240 and to arrange the traction ropes 212 in the extension direction of the guide rail 120. The diverting pulley 240 is set according to the field condition, and is used to adjust the movement direction of the traction rope 212, and it is generally necessary to provide one for each of the wing wall 21 and the opening ruler 230.
As can be seen from the figure, in the present embodiment of the present invention, the opening degree gauge 230 includes a first gauge surface 231 and a second gauge surface 232 connected to each other, and an included angle is formed between the first gauge surface 231 and the second gauge surface 232; the first face 231 is configured to score a plurality of height scales and the second face 232 is configured to score a plurality of angle scales.
Illustratively, in this embodiment, the 0 degree scale marks of the first rule surface 231 and the second rule surface 232 are the same, and the height scale of the first rule surface 231 is from 0 meters to 3 meters; the angular scale of the second face 232 is from 0 degrees to 90 degrees. This is merely an example and is not intended to be limiting.
Optionally, the opening ruler 230 is horizontally arranged, the cross section is in a V shape (opening 135 degrees), the transparent PVC material is adopted, the second ruler surface 232 of the inclined plane is used for measuring the opening angle, the first ruler surface 231 of the horizontal plane is used for measuring the height opening, and the scales are drawn after being calculated according to the size of the gate 22 and the monitoring pointer 110.
Accordingly, the opening pointer 220 in this embodiment includes a first portion 221 and a second portion 222 that remain bent; the bending angle of the opening pointer 220 is the same as the included angle of the opening ruler 230; the first portion 221 corresponds to the first face 231 and the second portion 222 corresponds to the second face 232.
Optionally, the opening pointer 220 is a "V" shaped (135 degrees open) plastic pointer, and is fixed on the pull rope 212, and can slide (satisfy full range motion) along with the pull rope 212 in the opening ruler 230, where one end indicates the opening angle and the other end indicates the height opening. This achieves that displacement generated during the overturning of the shutter 22 is displayed by the horizontal opening degree indicating mechanism 200. The accuracy of opening measurement is guaranteed, and reading is convenient.
In use, the gate 22 drives the monitor pointer 110 to slide in the guide rail 120 of the monitor pointer 110 in the opening and closing process, and the monitor pointer 110 drags the pull rope 212, so as to drive the opening pointer 220 to horizontally move in the opening ruler 230. The inclined surface part is indicated by the pointer, namely the angle opening degree (in degrees) of the gate 22, and the plane is the height opening degree, namely the height difference (in M) between the top of the gate 22 and the bottom plate of the sluice.
In summary, the embodiment of the invention provides a gate opening monitoring device 010, which has at least the following advantages:
1) The mechanical linkage device has the advantages of simple structure, convenient maintenance, low investment and maintenance cost, convenient observation, controllable precision and the like;
2) The opening ruler 230 can realize dual measurement of the angle opening and the height opening at the same time, so that the gate 22 is convenient to operate;
3) The opening ruler 230 is installed horizontally, so that river flood and landscape environment are not affected, and observation is convenient.
4) The application scene is as follows: the device is suitable for monitoring the opening of a steel dam gate, a connecting hole steel plate gate, a hinge gate and a gas shield gate.
The present invention is not limited to the above embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (10)
1. Gate aperture monitoring devices works with the gate, the gate passes through the lower extreme realization upset from top to bottom, its characterized in that:
comprises a monitoring pointer mechanism and an opening indicating mechanism;
the monitoring pointer mechanism comprises a monitoring pointer and a guide rail; the guide rail can be arranged on the sluice wing wall, one end of the pointer is arranged at the end part of the sluice far away from the bottom shaft, and the other end of the pointer is movably arranged in the guide rail;
the opening indicating mechanism comprises a traction structure, an opening pointer and an opening ruler;
the opening ruler is horizontally arranged and extends along the horizontal direction, and the opening pointer is movably matched with the opening ruler;
the opening pointer is connected with the monitoring pointer through the traction structure, and along with the opening of the gate, the monitoring pointer can drive the opening pointer to synchronously move along the length direction of the opening ruler so as to measure the opening angle and the opening height of the gate.
2. The gate opening monitoring apparatus according to claim 1, wherein:
the monitoring pointer comprises a first column and a second column which are perpendicular to each other, the first column is embedded into the guide rail, and the second column is connected with the gate.
3. The gate opening monitoring apparatus according to claim 2, wherein:
the monitoring pointer is made of a steel rod.
4. The gate opening monitoring apparatus according to claim 1, wherein:
the guide rail is provided with a groove with a closed bottom and an open top, and the opening pointer is embedded into the groove.
5. The gate opening monitoring apparatus according to claim 4, wherein:
the guide rail extends in an arc shape along the bottom shaft of the gate as the circle center.
6. The gate opening monitoring apparatus according to claim 1, wherein:
the traction structure further comprises an elastic wire winder and a traction rope;
one end of the haulage rope is arranged on the monitoring pointer, and the other end of the haulage rope is connected with the opening pointer through the elastic wire winder; and the elastic wire winding device can keep the traction rope in a tensioning state all the time.
7. The gate opening monitoring apparatus according to claim 6, wherein:
the opening indicating mechanism further comprises at least one diverting pulley;
the diverting pulley cooperates with the traction rope such that the traction rope can be wound around the diverting pulley and such that the traction rope is arranged in the direction of extension of the guide rail.
8. The gate opening monitoring apparatus according to claim 1, wherein:
the opening ruler comprises a first ruler surface and a second ruler surface which are connected with each other, and an included angle is formed between the first ruler surface and the second ruler surface;
the first scale surface is configured to score a plurality of height scales and the second scale surface is configured to score a plurality of angle scales.
9. The gate opening monitoring apparatus according to claim 8, wherein:
the opening ruler is made of transparent materials.
10. The gate opening monitoring apparatus according to claim 8, wherein:
the opening pointer comprises a first part and a second part which keep bending; the bending angle of the opening pointer is the same as the included angle of the opening ruler;
the first portion corresponds to the first face and the second portion corresponds to the second face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311303820.3A CN117308737A (en) | 2023-10-10 | 2023-10-10 | Gate opening monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311303820.3A CN117308737A (en) | 2023-10-10 | 2023-10-10 | Gate opening monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117308737A true CN117308737A (en) | 2023-12-29 |
Family
ID=89260033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311303820.3A Pending CN117308737A (en) | 2023-10-10 | 2023-10-10 | Gate opening monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117308737A (en) |
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2023
- 2023-10-10 CN CN202311303820.3A patent/CN117308737A/en active Pending
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