CN110984229A - A well lid for wisdom fire control - Google Patents
A well lid for wisdom fire control Download PDFInfo
- Publication number
- CN110984229A CN110984229A CN201911105806.6A CN201911105806A CN110984229A CN 110984229 A CN110984229 A CN 110984229A CN 201911105806 A CN201911105806 A CN 201911105806A CN 110984229 A CN110984229 A CN 110984229A
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- China
- Prior art keywords
- accommodating cavity
- cover body
- lever
- pulling
- intelligent fire
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Classifications
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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
- E02D29/1418—Covers for manholes or the like; Frames for covers with implements to assist in lifting, e.g. counterweights, springs
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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
- E02D29/1481—Security devices, e.g. indicating unauthorised opening
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention provides a well lid for intelligent fire protection, which comprises a lid body, a frame, a pulling and lifting mechanism and a driving assembly, wherein the lid body is provided with a pull rod and a pull rod; the frame comprises a first accommodating cavity and a second accommodating cavity which are provided with openings, and the first accommodating cavity and the second accommodating cavity share an intermediate cavity wall; an opening of the first accommodating cavity is formed into a well head, the cover body is covered at the opening of the first accommodating cavity, and the cover body is rotatably connected with the frame; the pulling-up mechanism is arranged in the second accommodating cavity, the pulling-up mechanism is detachably connected with the cover body, and the cover body can be automatically opened or closed through the movement of the pulling-up mechanism; drive assembly is connected with wisdom fire extinguishing system's thing networking communication, can remote control pull up the motion of mechanism, and convenient and fast improves work efficiency to the well lid among the prior art can not open or the technical problem who closes automatically has been solved.
Description
Technical Field
The invention relates to the technical field of well lids, in particular to a well lid for intelligent fire fighting.
Background
The well lid is used for covering a road or a deep well at home and preventing people or objects from falling. The modern well cover has wider definition.
The existing well lid mostly uses crowbars when people need to open the well lid, and the problem that the lid is difficult to open exists because the lid is heavier and is closed to the ground.
Disclosure of Invention
The invention mainly aims to provide a well lid for intelligent fire protection, which provides power for the movement of a pulling mechanism through a driving component, so that the lid can be automatically opened or closed, the driving component is also in communication connection with the Internet of things of an intelligent fire protection system, the movement of the pulling mechanism can be remotely controlled, convenience and rapidness are realized, the working efficiency is improved, and the technical problem that the well lid in the prior art cannot be automatically opened or closed is solved.
In order to achieve the purpose, the invention provides a well lid for intelligent fire fighting.
The well lid for intelligent fire fighting comprises a lid body, a frame, a pulling-up mechanism and a driving assembly; wherein: the frame comprises a first accommodating cavity and a second accommodating cavity which are provided with openings, and the first accommodating cavity and the second accommodating cavity share an intermediate cavity wall; an opening of the first accommodating cavity is formed into a well head, the cover body is covered at the opening of the first accommodating cavity, and the cover body is rotatably connected with the frame;
the pulling-up mechanism is arranged in the second accommodating cavity, the pulling-up mechanism is detachably connected with the cover body, and the cover body is opened or closed through the movement of the pulling-up mechanism;
drive assembly is connected with wisdom fire extinguishing system's thing networking communication, and drive assembly connects the mechanism that draws rises for draw the motion of mechanism to provide power.
Further, the pulling-up mechanism comprises a first lever, a second lever, a base and a rack, wherein one end of the first lever is connected with the cover body, and the other end of the first lever is in transmission connection with one end of the second lever; the base is fixed on the frame, the middle part of the second lever is movably installed on the base, the other end of the second lever is connected with the rack, and the rack reciprocates in the vertical direction through the driving assembly.
Furthermore, a through hole structure is arranged at the upper end of the middle cavity wall; one end of the first lever is bent, and the bent end of the first lever is connected with the inner side face of the cover body through the through hole structure.
Furthermore, the longitudinal section of the through hole structure is parallelogram.
Further, a cover plate is arranged at an opening of the second accommodating cavity; the driving assembly comprises a motor, a transmission unit and a control unit for controlling the motor to rotate, and the motor and the control unit are both arranged on the cover plate; the output shaft of the motor is connected with a gear, and the gear is meshed with the rack; the transmission unit is used for receiving the operation information, processing the operation information, generating an operation instruction and sending the operation instruction to the control unit.
Furthermore, the end part of the rack is provided with a limiting part.
Further, the control unit comprises a controller and a wireless communicator; the controller is connected with the motor and used for receiving an operation instruction and controlling the motor to drive the gear to rotate clockwise or anticlockwise; the controller passes through wireless communicator is connected with the thing networking communication of wisdom fire extinguishing system.
Further, an electronic tag is arranged on the outer surface of the cover body; the transmission unit is arranged on the cover body and comprises an information sensor, and the information sensor is used for receiving operation information generated by scanning the electronic tag, generating an operation instruction and sending the operation instruction to the controller.
Further, the transmission unit further comprises a gas concentration sensor, and the gas concentration sensor is used for detecting the gas concentration in the fire-fighting well, generating an operation instruction and sending the operation instruction to the controller.
Furthermore, an alarm is arranged on the cover body and connected with the controller.
The invention has the technical effects that:
according to the intelligent fire-fighting well cover, the electric opening mode is adopted, and meanwhile, the double-lever force transmission device is combined, so that the pulling stroke is increased, and the opening operation of the cover body is more labor-saving and convenient.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a cross-sectional view of a manhole cover for intelligent fire protection according to the present invention;
fig. 2 is a connection block diagram of a manhole cover and an internet of things system for intelligent fire protection in the invention.
In the figure:
1. a cover body; 2. a frame; 3. a cover plate; 4. a first accommodating chamber; 5. a second accommodating chamber; 6. a first lever; 7. a second lever; 8. a base; 9. a rack; 10. a motor; 11. a gear; 12. a controller; 13. a transmission unit; 14. a wireless communicator.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The invention discloses a well lid for intelligent fire protection, which is shown in figures 1 and 2 and comprises a lid body 1, a frame 2, a pulling mechanism and a driving component, wherein the pulling mechanism is arranged on the lid body; wherein: the frame 2 comprises a first accommodating cavity 4 and a second accommodating cavity 5 with openings, and the first accommodating cavity 4 and the second accommodating cavity 5 share an intermediate cavity wall; an opening of the first accommodating cavity 4 is formed into a wellhead, the cover body 1 is covered at the opening of the first accommodating cavity 4, and the cover body 1 is rotatably connected with the frame 2; the pulling-up mechanism is arranged in the second accommodating cavity 5, the pulling-up mechanism is detachably connected with the cover body 1, and the cover body 1 can be opened or closed through the movement of the pulling-up mechanism; drive assembly is connected with wisdom fire extinguishing system's thing networking communication to drive assembly connects and draws high mechanism for provide power for the motion of drawing high mechanism.
In the above embodiment, the manhole cover for intelligent fire fighting is mainly formed by combining the cover body 1, the frame 2, the pulling mechanism and the driving component, the frame 2 is installed in the fire fighting well, the frame 2 includes the first accommodating cavity 4 and the second accommodating cavity 5, and the first accommodating cavity 4 and the second accommodating cavity 5 share one middle cavity wall, the opening of the first accommodating cavity 4 is formed into a wellhead, the cover body 1 is covered at the opening of the first accommodating cavity 4, and the cover body 1 is rotatably connected with the frame 2, it can be understood that the cover body 1 can be opened or closed relative to the frame 2, for example, the cover body 1 is hinged with the frame 2. And the cover body 1 and the frame 2 are of a detachable structure, so that the cover body 1 is convenient to detach and replace when damaged. The pulling-up mechanism is installed in the second accommodating cavity 5 and can reciprocate in the vertical direction under the driving of the driving assembly, the cover body 1 is detachably connected with the pulling-up mechanism, and the pulling-up mechanism and the cover body 1 can be respectively and independently opened according to needs after the cover body 1 is opened, so that the cover body 1 can be replaced or maintained, and the follow-up maintenance operation is facilitated. Because the pulling-up mechanism is connected with the cover body 1, the cover body 1 can be automatically opened along with the descending of the pulling-up mechanism under the driving of the driving component, and can be automatically closed along with the ascending of the pulling-up mechanism. In addition, drive assembly still is connected with wisdom fire extinguishing system's thing networking communication, and the staff of thing networking control center can long-range transmission operating command to control drive assembly for drawing the motion of rising the mechanism provides power, thereby opens or close lid 1, convenient and fast, degree of automation is high.
As another embodiment of the present invention, the lifting mechanism includes a first lever 6, a second lever 7, a base 8 and a rack 9, wherein one end of the first lever 6 is connected with the cover 1, and the other end is in transmission connection with one end of the second lever 7; the base 8 is fixed on the frame 2, the middle part of the second lever 7 is movably installed on the base 8, the other end of the second lever 7 is connected with the rack 9, and the rack 9 reciprocates in the vertical direction through the driving assembly.
As shown in fig. 1, the lifting mechanism is mainly formed by combining a first lever 6, a second lever 7, a base 8 and a rack 9, the base 8 is firmly installed on the frame 2, one end of the first lever 6 is connected with the cover 1, and the other end is in transmission connection with one end of the second lever 7, it can be understood that a driven end of the first lever 6 is connected with an inner side surface of the cover 1, and a driving end of the first lever 6 is in transmission connection with a driven end of the second lever 7; the middle part movable mounting of second lever 7 is on base 8, and second lever 7 is connected with base 8 is rotated promptly, and second lever 7 can rotate around base 8, and the initiative end of second lever 7 and the one end fixed connection of rack 9, and rack 9 is connected with drive assembly to rack 9 can be through drive assembly's drive action reciprocating motion in the vertical direction, thereby makes lid 1 open or close.
Furthermore, the upper end of the middle cavity wall is provided with a through hole structure; one end of the first lever 6 is bent, and the bent end of the first lever 6 is connected with the inner side surface of the cover body 1 through a through hole structure.
As shown in fig. 1, a through hole structure is formed at the upper end of the middle cavity wall, one end of the first lever 6 is bent, the bent end serves as a driven end, and the driven end penetrates through the through hole structure to be connected with the inner side surface of the cover body 1.
Furthermore, the longitudinal section of the through hole structure is parallelogram. As shown in fig. 1, the longitudinal section of the through hole structure is a parallelogram, when the cover 1 needs to be opened, the rack 9 moves downward in the vertical direction through the driving action of the driving component, at this time, the driving end of the second lever 7 tilts downward along with the movement of the rack 9, the driven end of the second lever 7 drives the driving end of the first lever 6 to move upward, and the maximum inclination angle of the first lever 6 relative to the horizontal direction is the same as the inclination angle of the upper side of the parallelogram, i.e., the first lever 6 abuts against the upper side wall of the through hole structure, and the driven end of the first lever 6 moves upward under the driving action of the driving end of the first lever 6 to open the cover 1; accordingly, when it is necessary to close the lid body 1, the rack 9 is moved upward in the vertical direction by the driving action of the driving assembly, and is restored to the original position, and the lid body 1 is in the closed state by the driving of the first lever 6.
As another embodiment of the present invention, a cover plate 3 is provided at an opening of the second receiving chamber 5; the driving assembly comprises a motor 10, a transmission unit 13 and a control unit for controlling the motor 10 to rotate, and the motor 10 and the control unit are both arranged on the cover plate 3; wherein, the output shaft of the motor 10 is connected with a gear 11, and the gear 11 is meshed with the rack 9; the transmission unit 13 is used for receiving the operation information, generating an operation instruction after processing, and sending the operation instruction to the control unit.
As shown in fig. 1, the driving assembly is mainly formed by combining a motor 10, a transmission unit 13 and a control unit, the motor 10 and the control unit are both installed on the cover plate 3, the transmission unit 13 is used for receiving operation information, then generating an operation instruction, and sending the operation instruction to the control unit, the control unit is used for receiving the operation instruction, and controlling the rotation of the motor 10 according to the operation instruction, that is, the driving gear 11 rotates clockwise or counterclockwise, and the gear 11 and the rack 9 are engaged with each other, so as to drive the rack 9 to reciprocate in the vertical direction, and further open or close the cover body 1.
Further, a limiting portion (not shown) is disposed at an end of the rack 9, and the limiting portion may be a nut disposed on the rack 9 or a protrusion disposed on the rack 9, which is used for preventing the gear 11 from separating from the rack 9 and playing a role of limiting.
As another embodiment of the present invention, the gear 11 is driven by a crank or pedal (not shown). The gear 11 is connected to a transmission shaft which is driven by a crank or pedal to avoid manual or pedal drive in the event that drive of the motor 10 is not possible.
As another embodiment of the present invention, the control unit includes a controller 12 and a wireless communicator 14; the controller 12 is connected with the motor 10, and the controller 12 is used for receiving an operation instruction and controlling the motor 10 to drive the gear 9 to rotate clockwise or anticlockwise; the controller 12 is in communication connection with the internet of things of the intelligent fire fighting system through the wireless communicator 14.
As shown in fig. 2, a controller 12 is connected to the motor 10, and the controller 12 is configured to receive an operation command sent by the transmission unit and control the rotation of the motor 10 according to the operation command, so that the driving gear 9 rotates clockwise or counterclockwise. In addition, the control unit further comprises a wireless communicator 14, the controller 12 is in communication connection with a control center of the internet of things system through the wireless communicator 14, and a worker in the internet of things control center can remotely send an operation instruction to the controller 12 to remotely control the opening or closing of the cover body 1.
As another embodiment of the present invention, an electronic tag is disposed on the outer surface of the cover body 1; the transmission unit 13 is disposed on the cover 1, and the transmission unit 13 includes an information sensor for receiving operation information generated by scanning the electronic tag, generating an operation instruction, and sending the operation instruction to the controller 12.
The electronic tags are pasted on the outer surface of the cover body 1, specifically, in actual work, each cover body 1 can be numbered, the electronic tags are coding information or two-dimensional code information or bar code information, an operator can scan the electronic tags through a client, such as a mobile phone APP or a mobile phone, send operation information for opening or closing the cover body 1, and send the operation information to the information sensor. And an information sensor mounted on the cover body 1, for receiving the operation information, generating an operation command, and then sending the operation command to the controller 12, wherein the controller 12 controls the rotation of the motor 10 after receiving the operation command, so as to drive the rack 9 to reciprocate in the vertical direction, thereby opening or closing the cover body 1.
Further, the transmission unit 13 further includes a gas concentration sensor for detecting the gas concentration in the fire well and generating an operation instruction to be sent to the controller 12. The gas concentration sensor is used for detecting the concentration of harmful gas in the fire-fighting well, and when the concentration of the harmful gas is higher than a set threshold value, the gas concentration sensor generates an operation instruction and sends the operation instruction to the controller 12, and the controller 12 receives the operation instruction and then controls the rotation of the motor 10, so that the driving rack 9 reciprocates in the vertical direction, and the cover body 1 is opened or closed.
Furthermore, an alarm (not shown) is arranged on the cover body 1, the alarm is connected with the controller 12, when the gas concentration sensor detects that the concentration of harmful gas in the fire well is higher than a set threshold value, or when the information sensor receives operation information generated by scanning an electronic tag, an alarm instruction is generated and sent to the controller 12, and the controller 12 receives the alarm instruction and controls the alarm to give an alarm so as to warn operators and passersby, avoid danger and improve safety.
The invention also discloses a connection block diagram of the well lid for intelligent fire fighting and an internet of things system, as shown in fig. 2, the well lid for intelligent fire fighting is in communication connection with the internet of things of an intelligent community through a control unit, specifically, the control unit comprises a controller 12 and a wireless communicator 14, when the lid body 1 needs to be opened or closed, an operator of a control center of the internet of things can remotely send an operation instruction to the controller 12 through the wireless communicator 14, and after the controller 12 receives the operation instruction, the rotation of the motor 10 is controlled, so that the pulling-up mechanism is driven to reciprocate in the vertical direction, and the lid body 1 is further opened or closed. In addition, an electronic tag is attached to the outer surface of each cover body 1, an operator can scan the electronic tag through a mobile phone APP or a mobile phone, and send operation information to the transmission unit 13, the transmission unit 13 generates an operation instruction after receiving the operation information, and sends the operation instruction to the controller 12, and the controller 12 controls the rotation of the motor 10 after receiving the operation instruction, so as to drive the pulling-up mechanism to reciprocate in the vertical direction, and further open or close the cover body 1.
It is to be noted that the term "comprises" and any variations thereof in the description and claims of the present invention is intended to cover non-exclusive inclusions, such that the inclusion of a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not explicitly listed or inherent to such elements.
In the present invention, the terms "upper", "lower", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.
Furthermore, the description of "first," "second," etc. referred to in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A well lid for intelligent fire fighting is characterized by comprising a lid body (1), a frame (2), a pulling-up mechanism and a driving component; wherein:
the frame (2) comprises a first accommodating cavity (4) and a second accommodating cavity (5) with openings, and the first accommodating cavity (4) and the second accommodating cavity (5) share an intermediate cavity wall; an opening of the first accommodating cavity (4) is formed into a wellhead, the cover body (1) is arranged at the opening of the first accommodating cavity (4) in a covering mode, and the cover body (1) is rotatably connected with the frame (2);
the pulling-up mechanism is arranged in the second accommodating cavity (5), the pulling-up mechanism is detachably connected with the cover body (1), and the cover body (1) is opened or closed through the movement of the pulling-up mechanism;
drive assembly is connected with wisdom fire extinguishing system's thing networking communication, and drive assembly connects the mechanism that draws rises for draw the motion of mechanism to provide power.
2. The manhole cover for intelligent fire fighting according to claim 1, wherein the pulling mechanism comprises a first lever (6), a second lever (7), a base (8) and a rack (9), wherein one end of the first lever (6) is connected with the cover body (1), and the other end is in transmission connection with one end of the second lever (7); the base (8) is fixed on the frame (2), the middle of the second lever (7) is movably mounted on the base (8), the other end of the second lever (7) is connected with the rack (9), and the rack (9) reciprocates in the vertical direction through the driving assembly.
3. The well cover for intelligent fire fighting of claim 2, wherein the upper end of the middle cavity wall is provided with a through hole structure; one end of the first lever (6) is bent, and the bent end of the first lever (6) is connected with the inner side surface of the cover body (1) through the through hole structure.
4. The manhole cover for intelligent fire fighting of claim 3, wherein the longitudinal section of the through hole structure is a parallelogram.
5. The manhole cover for intelligent fire fighting according to claim 2, wherein a cover plate (3) is arranged at the opening of the second accommodating cavity (5); the driving assembly comprises a motor (10), a transmission unit (13) and a control unit for controlling the motor (10) to rotate, and the motor (10) and the control unit are both arranged on the cover plate (3); wherein, a gear (11) is connected to an output shaft of the motor (10), and the gear (11) is meshed with the rack (9); and the transmission unit (13) is used for receiving the operation information, processing the operation information, generating an operation instruction and sending the operation instruction to the control unit.
6. The manhole cover for intelligent fire fighting as claimed in claim 5, wherein the rack (9) is provided with a limiting part at the end.
7. The manhole cover for intelligent fire fighting of claim 5, wherein the control unit comprises a controller (12) and a wireless communicator; the controller (12) is connected with the motor (10), and the controller (12) is used for receiving an operation instruction and controlling the motor (10) to drive the gear (9) to rotate clockwise or anticlockwise; the controller (12) is connected with the intelligent fire-fighting system through the wireless communicator in a communication mode.
8. The manhole cover for intelligent fire fighting as claimed in claim 7, wherein the cover body (1) is provided with an electronic tag on the outer surface; the transmission unit (13) is arranged on the cover body (1), the transmission unit (13) comprises an information sensor, and the information sensor is used for receiving operation information generated by scanning the electronic tag, generating an operation instruction and sending the operation instruction to the controller (12).
9. Manhole cover for intelligent fire fighting according to claim 7, wherein the transmission unit (13) further comprises a gas concentration sensor for detecting the gas concentration inside the fire shaft and generating operating instructions to be sent to the controller (12).
10. The manhole cover for intelligent fire fighting as claimed in claim 7, wherein the cover body (1) is provided with an alarm, and the alarm is connected with the controller (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911105806.6A CN110984229B (en) | 2019-11-13 | 2019-11-13 | A well lid for wisdom fire control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911105806.6A CN110984229B (en) | 2019-11-13 | 2019-11-13 | A well lid for wisdom fire control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110984229A true CN110984229A (en) | 2020-04-10 |
| CN110984229B CN110984229B (en) | 2021-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911105806.6A Active CN110984229B (en) | 2019-11-13 | 2019-11-13 | A well lid for wisdom fire control |
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| Country | Link |
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| CN (1) | CN110984229B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7695213B1 (en) * | 2007-12-12 | 2010-04-13 | Neenah Foundry Company | Cam-lift for a manhole cover |
| CN205712183U (en) * | 2016-06-14 | 2016-11-23 | 杭州师范大学钱江学院 | A kind of novel plastic inspection shaft |
| CN206110189U (en) * | 2016-08-27 | 2017-04-19 | 杨松梅 | Municipal administration inspection shaft lid |
| CN207073151U (en) * | 2017-06-16 | 2018-03-06 | 国网河南鄢陵县供电公司 | Cable overhauls the concealed headstock gear of manhole cover plate |
| CN207484520U (en) * | 2017-11-20 | 2018-06-12 | 浙江致腾电气成套设备有限公司 | The well lid that a kind of emergency is quickly opened |
-
2019
- 2019-11-13 CN CN201911105806.6A patent/CN110984229B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7695213B1 (en) * | 2007-12-12 | 2010-04-13 | Neenah Foundry Company | Cam-lift for a manhole cover |
| CN205712183U (en) * | 2016-06-14 | 2016-11-23 | 杭州师范大学钱江学院 | A kind of novel plastic inspection shaft |
| CN206110189U (en) * | 2016-08-27 | 2017-04-19 | 杨松梅 | Municipal administration inspection shaft lid |
| CN207073151U (en) * | 2017-06-16 | 2018-03-06 | 国网河南鄢陵县供电公司 | Cable overhauls the concealed headstock gear of manhole cover plate |
| CN207484520U (en) * | 2017-11-20 | 2018-06-12 | 浙江致腾电气成套设备有限公司 | The well lid that a kind of emergency is quickly opened |
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| Publication number | Publication date |
|---|---|
| CN110984229B (en) | 2021-04-02 |
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