CN114252924A - Contactless well lid detection device - Google Patents
Contactless well lid detection device Download PDFInfo
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- CN114252924A CN114252924A CN202111574561.9A CN202111574561A CN114252924A CN 114252924 A CN114252924 A CN 114252924A CN 202111574561 A CN202111574561 A CN 202111574561A CN 114252924 A CN114252924 A CN 114252924A
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- sleeve
- cover plate
- rod
- spring
- reset
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- 238000001514 detection method Methods 0.000 title claims abstract description 24
- 230000006698 induction Effects 0.000 claims abstract description 24
- 230000000903 blocking effect Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims 2
- 238000010276 construction Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/081—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices the magnetic field is produced by the objects or geological structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Remote Sensing (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
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- Mining & Mineral Resources (AREA)
- Electromagnetism (AREA)
- Geology (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a non-contact well lid detection device, and relates to the technical field of well lids, wherein the well lid comprises a first cover plate and a second cover plate, and the first cover plate is arranged above the second cover plate; the detection device comprises a pressing spring, a pressing rod and a shell; the shell comprises a top plate and a bottom plate which are connected through a coaming; a through groove which is communicated up and down is arranged on the second cover plate, and the shell is embedded in the through groove; a magnet, a sleeve, a magnetic induction sensor and a reset spring are arranged in the shell; the reset spring is sleeved outside the sleeve, and the magnet is arranged inside the sleeve; the upper end of the reset spring is fixedly connected with the upper end of the sleeve, the lower part of the lower pressure spring is sleeved at the upper end of the lower pressure rod, and the lower end of the lower pressure rod penetrates through the first through hole in the top plate and then is connected with the upper part of the sleeve; the magnetic induction sensor is arranged on the top plate close to the first through hole; the detection device is in switch type detection, and has low power consumption and strong real-time performance.
Description
Technical Field
The invention relates to the technical field of well lids, in particular to a non-contact well lid detection device.
Background
There are many underground pipes in urban construction, such as sewers, underground gas pipes, water supply pipes, power pipes, communication pipes, defense pipes, etc., which have an outlet to the ground at intervals, and the section from the pipe to the ground is called a manhole, which is usually level with the ground, and therefore a manhole cover is needed to prevent people or objects from falling.
At present the well lid includes first apron and second apron, and under the condition that first layer bearing well lid was opened or was lost, unable detection. The scheme that has now on the market is on well lid second apron, installed and adopted photosensitive sensor to feel or ultrasonic detection sensor module, and photosensitive sensor is in evening or light is invalid easily when very weak, and the ultrasonic module is covered and is become invalid by silt easily, and adopts the mode of micro-gap switch mechanical contact, when the first apron of well lid is covered, under the very big condition of impact force degree, leads to the destroyed phenomenon of sensor easily.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a non-contact type well lid detection device, aiming at solving the problem that the detection cannot be carried out when a first layer of bearing well lid cover plate of a well lid in the prior art is opened or lost.
The technical scheme is as follows: a non-contact well lid detection device is disclosed, wherein the well lid comprises a first cover plate and a second cover plate, and the first cover plate is arranged above the second cover plate;
the detection device comprises a pressing spring, a pressing rod and a shell; the shell comprises a top plate and a bottom plate which are connected through a coaming; a through groove which is communicated up and down is arranged on the second cover plate, and the shell is embedded in the through groove; a magnet, a sleeve, a magnetic induction sensor and a reset spring are arranged in the shell; the reset spring is sleeved outside the sleeve, and the magnet is arranged inside the sleeve; the upper end of the reset spring is fixedly connected with the upper end of the sleeve, and the length of the sleeve is smaller than the distance between the top plate and the bottom plate; the upper end and the lower end of the reset spring are respectively abutted against the top plate and the bottom plate; the lower part of the lower pressure spring is sleeved at the upper end of the lower pressure rod, and the lower part of the lower pressure spring is fixedly connected with the upper end of the lower pressure rod; the top plate is provided with a first through hole, and the lower end of the lower pressing rod penetrates through the first through hole and then is connected with the upper part of the sleeve; the magnetic induction sensor is arranged on the top plate close to the first through hole; when the first cover plate is lost or lifted, the magnet and the magnetic induction sensor are positioned on the same horizontal plane; when the first cover plate is not lifted, the downward pressing spring is compressed downwards under the pressure of the first cover plate, and the magnet is driven to move downwards to be lower than the horizontal plane where the magnetic induction sensor is located.
Further, the sleeve is made of non-magnetic field shielding materials, the magnet is vertically installed in the sleeve, and two poles of the magnet are arranged up and down.
Furthermore, a reset rod is further arranged in the shell, and a second through hole for accommodating the reset rod to pass through is formed in a bottom plate of the shell; the reset rod is arranged on the inner side of the reset spring, the upper end of the reset rod is connected with the lower end of the sleeve, a blocking part is arranged at the lower end of the reset rod, and the blocking part is located on the lower side of the bottom plate.
Further, the lower pressing rod and the reset rod are both in threaded connection with the sleeve; the inner side surface of the sleeve is provided with internal threads, and the lower end of the lower pressing rod and the upper end of the reset rod are provided with external threads.
Further, the pressing spring is a spherical spring.
Furthermore, a check ring is arranged on the lower portion of the lower pressing rod and located above the external thread of the lower pressing rod, and the check ring is located in the shell.
Has the advantages that: according to the invention, the magnetic induction sensor and the magnet capable of moving up and down are arranged, so that whether the first cover plate is opened or covered is detected; when the first cover plate is lost or opened, the magnet returns to the horizontal plane where the magnetic induction sensor is located under the driving of the reset spring, and the magnetic induction sensor senses the signal, so that the first cover plate is detected to be lost or opened. When the first cover plate is not lifted, the magnet moves downwards under the action of the pressing spring and the pressing rod, and is separated from the induction range of the magnetic induction sensor, so that a signal on the first cover plate cover is detected.
Drawings
Fig. 1 is a schematic structural view of the present invention when the first cover is not opened.
Fig. 2 is an enlarged schematic view of the detecting apparatus in fig. 1.
Fig. 3 is a schematic structural view of the present invention when the first cover is opened.
Fig. 4 is an enlarged schematic structural diagram of the detection device in fig. 3.
Reference numbers in the figures: a first cover plate-1; a second cover plate-2; pressing down a spring-3; a lower pressure lever-4; a shell-5; a magnet-6; a sleeve-7; a magnetic induction sensor-8; a return spring-9; a reset rod-10.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.
As shown in fig. 1-4, a non-contact manhole cover detection device comprises a first cover plate 1 and a second cover plate 2, wherein the first cover plate 1 is arranged above the second cover plate 2;
the detection device comprises a lower pressure spring 3, a lower pressure rod 4 and a shell 5, wherein the lower pressure spring 3 is a spherical spring; the shell 5 comprises a top plate and a bottom plate which are connected through a coaming; a through groove which is communicated up and down is arranged on the second cover plate 2, and the shell 5 is embedded in the through groove;
a magnet 6, a sleeve 7, a magnetic induction sensor 8 and a return spring 9 are arranged in the shell 5; the sleeve 7 is made of non-magnetic shielding material. The magnet 6 is vertically arranged in the sleeve 7, and two poles of the magnet 6 are arranged up and down.
The reset spring 9 is sleeved on the outer side of the sleeve 7, and the magnet 6 is arranged in the sleeve 7; the upper end of the return spring 9 is fixedly connected with the upper end of the sleeve 7, and the length of the sleeve 7 is smaller than the distance between the top plate and the bottom plate; the upper end and the lower end of the return spring 9 are respectively abutted against the top plate and the bottom plate;
the lower part of the lower pressure spring 3 is sleeved at the upper end of the lower pressure rod 4, and the lower part of the lower pressure spring 3 is fixedly connected with the upper end of the lower pressure rod 4; a first through hole is formed in the top plate, and the lower end of the lower pressing rod 4 penetrates through the first through hole and then is connected with the upper part of the sleeve 7; the magnetic induction sensor 8 is arranged on the top plate close to the first through hole; when the first cover plate 1 is lost or lifted, the magnet 6 and the magnetic induction sensor 8 are positioned on the same horizontal plane; when the first cover plate 1 is not lifted, the downward-pressing spring 3 is compressed downward by the pressure of the first cover plate 1, and drives the magnet 6 to move downward to a level lower than the level where the magnetic induction sensor 8 is located.
A reset rod 10 is further arranged in the shell 5, and a second through hole for accommodating the reset rod 10 to pass through is formed in a bottom plate of the shell 5; the reset rod 10 is arranged on the inner side of the reset spring 9, the upper end of the reset rod 10 is connected with the lower end of the sleeve 7, a blocking part is arranged at the lower end of the reset rod 10, and the blocking part is located on the lower side of the bottom plate.
The lower pressing rod 4 and the reset rod 10 are both in threaded connection with the sleeve 7; the inner side surface of the sleeve 7 is provided with internal threads, and the outer side of the lower end of the lower pressing rod 4 and the outer side of the upper end of the reset rod 10 are both provided with external threads.
The lower portion of the lower pressing rod 4 is provided with a check ring, the check ring is located above the external thread of the lower pressing rod 4, and the check ring is located in the shell 5.
The working principle of the invention is as follows:
1) when the first cover plate is lost or is opened, the magnet returns to the horizontal plane where the magnetic induction sensor is located under the driving of the reset spring, and the magnetic induction sensor senses a magnetic signal, so that the first cover plate is detected to be lost or opened.
2) When the first cover plate is not lifted, the first cover plate gives downward pressure to the pressing spring so as to push the pressing rod to move downwards, the magnet moves downwards to be separated from the detection range of the magnetic induction sensor, and therefore a signal that the first cover plate is lost or is opened is detected.
3) The lower pressure rod is connected with the reset rod through a threaded sleeve, the threaded sleeve is made of non-magnetic field shielding materials, magnets in the sleeve are vertically installed, the magnets are in polar directions and vertically installed in the sleeve, the magnetic fields of the magnets are in the upper and lower directions all the time, and therefore the situation that the magnets are pressed down and reset is avoided, and the magnetic induction sensors cannot detect magnetic signals due to the change of the polarity orientation of the magnets.
4) The spherical spring can adapt to the downward pressing of any directions of the first layer of well cover, and the effect is better than that of a common spring.
The detection device is in switch type detection, and has low power consumption and strong real-time performance.
As noted above, while the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited thereto. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A non-contact well lid detection device is disclosed, wherein the well lid comprises a first cover plate and a second cover plate, and the first cover plate is arranged above the second cover plate; the device is characterized in that the detection device comprises a pressing spring, a pressing rod and a shell; the shell comprises a top plate and a bottom plate which are connected through a coaming; a through groove which is communicated up and down is arranged on the second cover plate, and the shell is embedded in the through groove;
a magnet, a sleeve, a magnetic induction sensor and a reset spring are arranged in the shell; the reset spring is sleeved outside the sleeve, and the magnet is arranged inside the sleeve; the upper end of the reset spring is fixedly connected with the upper end of the sleeve, and the length of the sleeve is smaller than the distance between the top plate and the bottom plate; the upper end and the lower end of the reset spring are respectively abutted against the top plate and the bottom plate;
the lower part of the lower pressure spring is sleeved at the upper end of the lower pressure rod, and the lower part of the lower pressure spring is fixedly connected with the upper end of the lower pressure rod; the top plate is provided with a first through hole, and the lower end of the lower pressing rod penetrates through the first through hole and then is connected with the upper part of the sleeve; the magnetic induction sensor is arranged on the top plate close to the first through hole; when the first cover plate is lost or lifted, the magnet and the magnetic induction sensor are positioned on the same horizontal plane; when the first cover plate is not lifted, the downward pressing spring is compressed downwards under the pressure of the first cover plate, and the magnet is driven to move downwards to be lower than the horizontal plane where the magnetic induction sensor is located.
2. The non-contact manhole cover inspection device of claim 1, wherein the sleeve is made of a non-magnetic shielding material, the magnet is vertically installed in the sleeve, and two poles of the magnet are arranged up and down.
3. The non-contact well lid detection device according to claim 1, wherein a reset rod is further arranged in the housing, and a second through hole through which the reset rod passes is formed in a bottom plate of the housing; the reset rod is arranged on the inner side of the reset spring, the upper end of the reset rod is connected with the lower end of the sleeve, a blocking part is arranged at the lower end of the reset rod, and the blocking part is located on the lower side of the bottom plate.
4. The non-contact well lid detection device according to claim 3, wherein the lower pressing rod and the reset rod are both in threaded connection with the sleeve; the inner side surface of the sleeve is provided with internal threads, and the lower end of the lower pressing rod and the upper end of the reset rod are provided with external threads.
5. The non-contact manhole cover inspection device of claim 1, wherein the hold-down spring is a ball spring.
6. The non-contact well lid detection device according to claim 1, wherein a retainer ring is arranged at the lower part of the lower pressure rod, the retainer ring is positioned above the external thread of the lower pressure rod, and the retainer ring is positioned in the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111574561.9A CN114252924A (en) | 2021-12-21 | 2021-12-21 | Contactless well lid detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111574561.9A CN114252924A (en) | 2021-12-21 | 2021-12-21 | Contactless well lid detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114252924A true CN114252924A (en) | 2022-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111574561.9A Pending CN114252924A (en) | 2021-12-21 | 2021-12-21 | Contactless well lid detection device |
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| Country | Link |
|---|---|
| CN (1) | CN114252924A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107460894A (en) * | 2017-08-04 | 2017-12-12 | 山东康威通信技术股份有限公司 | Earth magnetism metal composite inductive switch, outer well lid monitoring system for well lid monitoring |
| CN108802827A (en) * | 2018-06-12 | 2018-11-13 | 贵阳红鸟智能技术服务有限公司 | A kind of intelligent city's sewer pipe network manhole cover system compression spring signaling switch |
| CN109440826A (en) * | 2018-11-02 | 2019-03-08 | 国网河南省电力公司驻马店供电公司 | A kind of well cover of cable well missing alarm |
| CN110570612A (en) * | 2019-09-20 | 2019-12-13 | 西安中星测控有限公司 | Anti-theft structure of double-layer well lid and detection method |
-
2021
- 2021-12-21 CN CN202111574561.9A patent/CN114252924A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107460894A (en) * | 2017-08-04 | 2017-12-12 | 山东康威通信技术股份有限公司 | Earth magnetism metal composite inductive switch, outer well lid monitoring system for well lid monitoring |
| CN108802827A (en) * | 2018-06-12 | 2018-11-13 | 贵阳红鸟智能技术服务有限公司 | A kind of intelligent city's sewer pipe network manhole cover system compression spring signaling switch |
| CN109440826A (en) * | 2018-11-02 | 2019-03-08 | 国网河南省电力公司驻马店供电公司 | A kind of well cover of cable well missing alarm |
| CN110570612A (en) * | 2019-09-20 | 2019-12-13 | 西安中星测控有限公司 | Anti-theft structure of double-layer well lid and detection method |
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