A locking structure for an escape wellhead of an integrated pipe gallery and an intelligent manhole cover

Abstract

The present invention relates to a lock structure and an intelligent manhole cover for an escape wellhead of an integrated pipe gallery. The lock structure includes: a lock housing for installation at the bottom of the manhole cover; a lock pin fixing frame fixedly connected to the lock housing; a curved lock pin connected to the lock pin fixing frame through a first pin shaft. A return spring is arranged at the bottom of the curved lock pin, and an opening is formed inside the curved lock pin. Under normal conditions, the curved lock pin pops out, and the well seat bearing edge is clamped by the curved side to achieve the purpose of locking the manhole cover; a transmission toggle plate connected to the lock pin fixing frame through a second pin shaft. One end of the transmission toggle plate is arranged inside the opening. Taking the position of the second pin shaft as a fulcrum, when the transmission toggle plate is pressed down, the curved lock pin retracts; a transmission connecting rod connected to the lock housing through a movable pin; a transmission pressure rod fixedly arranged on the transmission connecting rod, and the transmission pressure rod is connected to the other end of the transmission toggle plate; an operation handle arranged at the bottom of the transmission connecting rod.

Description

Technical Field

[0001] The invention relates to a lock structure for an escape manhole of a comprehensive pipe gallery and an intelligent manhole cover, and relates to the field of safety control of urban infrastructure. Background Art

[0002] The utility corridor brings together various municipal pipelines such as electricity, communications, water supply and drainage, gas, and heating, and is the lifeline and artery of modern cities. As a key urban infrastructure, the utility corridor, as a limited underground space, may face disasters such as fire, explosion, flooding, and earthquake during operation, threatening the personal safety of operation and maintenance personnel. With the exponential growth of the mileage of completed and under-construction utility corridors in China, the above two risks have increased sharply. As the only personnel passage connected to the outside world except for the entrance and exit of the utility corridor, the escape wellhead is particularly important in terms of its ability to resist illegal external intrusion and ensure the reliable escape of operation and maintenance personnel in the corridor in the event of a disaster.

[0003] Currently, most of the existing escape manhole covers are electric or hydraulically driven full-powered types. However, in the highly humid, dusty and highly polluted environment of the tunnel wellhead, it is difficult to avoid the aging of hydraulic seals and reduced insulation of motors, resulting in reduced reliability. In addition, the excessive energy of the motor and hydraulic power is itself a source of danger. Summary of the invention

[0004] In view of the above problems, the object of the present invention is to provide a lock structure and intelligent manhole cover for an escape manhole of a comprehensive pipe gallery which has a simple structure and high reliability.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] In a first aspect, the present invention provides a lock structure for an escape wellhead of a comprehensive pipe gallery, the lock structure comprising:

[0007] A lock housing for mounting at the bottom of the manhole cover;

[0008] A lock pin fixing frame, fixedly connected to the lock housing;

[0009] The curved surface lock pin is connected to the lock pin fixing frame through a first pin shaft, a reset spring is arranged at the bottom of the curved surface lock pin, an opening is arranged on the inner side of the curved surface lock pin, and the curved surface lock pin pops out under normal conditions, and the purpose of locking the manhole cover is achieved by clamping the bearing edge of the well seat through the curved surface side;

[0010] A transmission seesaw is connected to the lock pin fixing frame via a second pin shaft, one end of the transmission seesaw is arranged in the opening, and the position of the second pin shaft is used as a fulcrum. When the transmission seesaw is pressed down, the curved lock pin is retracted;

[0011] The transmission connecting rod is connected to the lock housing through a movable pin;

[0012] The transmission pressure rod is fixedly arranged on the transmission connecting rod, and the other end of the transmission pressure rod is connected to the transmission rocker;

[0013] The operating handle is arranged at the bottom of the transmission connecting rod; wherein,

[0014] When the operating handle is pushed upward, the transmission connecting rod moves upward with the second pin shaft as the fulcrum, driving the transmission pressure rod to press the transmission rocker, and the transmission rocker drives the curved surface lock pin to retract, completing the emergency unlocking.

[0015] For the lock structure described above, further, it further includes an emergency unlocking lock core and an electromagnetic lock arranged on the lock housing;

[0016] A reversing disc is fixedly arranged at the bottom of the emergency unlocking lock core. Under normal conditions, the iron core of the electromagnetic lock remains in the released state, restricting the movement of the steering disc. When the electromagnet is energized and attracted, the unlocking key can be inserted into the emergency unlocking lock core. After rotation, the horizontal circumferential force of the unlocking operation is converted into a downward pressure on the transmission rocker through the reversing disc, retracting the curved surface lock pin, and completing the unlocking operation outside the well.

[0017] For the lock structure for the escape wellhead of the integrated pipe gallery described above, further, a position sensor is arranged at the tail of the electromagnet to feedback the attracting / releasing state of the electromagnet.

[0018] For the lock structure for the escape wellhead of the integrated pipe gallery described above, further, a tipping switch is horizontally arranged on the lock housing to feedback the open / closed state of the manhole cover.

[0019] For the lock structure for the escape wellhead of the integrated pipe gallery described above, further, an audible and visual alarm is arranged at the lower part of the lock housing to provide an alarm when the manhole cover is illegally opened.

[0020] For the lock structure for the escape wellhead of the integrated pipe gallery described above, further, an external unlocking port is arranged at the upper part of the lock housing, and a waterproof sealing rubber ring is configured at the external unlocking port.

[0021] In a second aspect, the present invention further provides an intelligent manhole cover dedicated to the escape wellhead of the integrated pipe gallery. The intelligent manhole cover includes a manhole cover body, the lock structure described in the first aspect of the present invention, and a control unit;

[0022] The manhole cover body includes a manhole cover, a manhole seat, an extended chassis, a gas-liquid assist device and an accompanying protection device. The manhole seat and the manhole cover are fixedly connected to the extended chassis as a whole after being connected by hinges; one end of the gas-liquid assist device is fixedly connected to the bottom bracket on one side of the manhole seat, and the other end is fixedly connected to the upper bracket at the bottom of the manhole cover; the accompanying protection device and the gas-liquid assist device are coaxially installed on the bottom bracket and the upper bracket, so that the accompanying protection device can follow the gas-liquid assist device; the control unit is used to connect the lock structure, monitor the state of the manhole cover and control the electronic lock structure to execute the corresponding unlocking command.

[0023] The intelligent manhole cover, further, the accompanying protection device includes an inner accompanying slide rail, an outer accompanying slide rail and a cotter pin; the inner accompanying slide rail is provided with an oblong hole, and the cotter pin installed on the outer accompanying slide rail slides in the oblong hole, and its sliding stroke is smaller than the maximum stroke of the gas-liquid assist device, wherein after the inner accompanying slide rail and the outer accompanying slide rail are assembled, their upper and lower mounting points are coaxially mounted on the bottom bracket and the upper bracket with the gas-liquid assist device.

[0024] The smart manhole cover further includes a control unit, which is used to connect to the lock structure, monitor the state of the manhole cover and control the lock structure to execute a corresponding unlocking command.

[0025] The intelligent manhole cover, further, the control unit includes a control panel and a main controller; the control panel is provided with panel control keys and panel indicator lights; the main controller includes a power module, a CPU module, a network module, a serial port module, an input module and an output module;

[0026] The power module is used to provide working power to each component;

[0027] An input module, used to collect control commands from the host computer and the panel control keys, and to collect various status signals of the electromagnetic lock;

[0028] An output module, used to output signals to the electromagnet and the sound and light alarm of the electromagnetic lock structure, control the operation of the electromagnet and the sound and light alarm, and send signals to the panel indicator light at the same time;

[0029] A CPU module, used to execute a preset logical relationship according to the input module command and send an output command to the output module;

[0030] Serial port module, used to upload and download the main controller program;

[0031] The network module is used to communicate with the host computer, transmit manhole cover status signals and alarms, and receive remote control commands.

[0032] The intelligent manhole cover further has a connection point between the gas-liquid assist device and the bottom bracket at a lower horizontal position than a connection point between the gas-liquid assist device and the upper bracket, so that the gas-liquid assist device has a positive angle relative to the horizontal manhole cover, thereby generating a vertical upward force component to provide assistance to the user when pushing open the manhole cover.

[0033] The present invention has the following advantages due to the following technical solutions:

[0034] 1. The intelligent power-assisted manhole cover of the present invention can effectively prevent illegal intrusion from the outside, rely on the power-assisted device to ensure the rapid and safe escape of operation and maintenance personnel, and provide various states and alarms of the manhole cover to the upper computer;

[0035] 2. The present invention adopts a gas-liquid mixed power-assisting method to replace hydraulic power-assisting and electric power-assisting, thereby avoiding the problems of aging of hydraulic seals and reduced insulation of motors, and enhancing the reliability of the power-assisting mechanism;

[0036] 3. The present invention is equipped with a lock structure specially used for emergency evacuation of the escape well. When entering the corridor from the outside of the well, unlocking operation is required. However, when going out of the well from the inside, the manhole cover can be opened directly without restriction with the assistance of the power assist device, which greatly improves the opening speed of the manhole cover;

[0037] 4. The lock structure of the present invention does not have an unlocking button. The unlocking operation is automatically completed when the handle is pushed upward from the bottom to open the manhole cover. The operating handle moves toward the front end of the manhole cover when pushed open, thereby increasing the distance between the force application point and the manhole cover fulcrum, achieving a labor-saving effect;

[0038] 5. The power-assisting device provided in the present invention is equipped with an accompanying protection device. The main feature of the device is that it uses two pieces that are nested in each other and slide in opposite directions. It can follow the gas-liquid power-assisting device to prevent the lateral force caused by excessive manufacturing and installation errors or improper operation from damaging the gas-liquid cylinder seal of the power-assisting device. The outward-extended wing surface can also provide a protective barrier for the power-assisting device to prevent the power-assisting device from being bumped and deformed. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Throughout the accompanying drawings, the same reference numerals are used to represent the same components. In the accompanying drawings:

[0040] Figure 1 This is a structural diagram of the manhole cover main casting of the present invention;

[0041] Figure 2 This is a structural diagram of the accompanying protection device of the present invention;

[0042] Figure 3 It is the structural diagram A of the special lock of the present invention;

[0043] Figure 4 Structural diagram B of the special lock for the present invention;

[0044] Figure 5 Structural diagram of the control unit of the present invention;

[0045] The reference numerals in the figure are: cast iron manhole cover 11, cast iron manhole seat 12, cast iron extended chassis 13, gas-liquid booster device 14, accompanying protection device 15, inner accompanying slide rail 151, outer accompanying slide rail 152, split pin 153, oblong hole 154, bottom bracket 16, upper bracket 17; lock structure 2, lock housing 201, lock pin fixing frame 202, curved lock pin 203, return spring 204, transmission rocker 205, transmission connecting rod 206, transmission pressure rod 207, operation handle 208, sealing ring 209, emergency unlocking lock core 210, electromagnetic lock 211, commutation disc 212, position sensor 213, tipping switch 214, sound and light alarm 215, aviation plug 216; control unit 3, control panel 31, panel control keys 311, panel indicator lights 312, main controller 32, power module 321, CPU module 322, network module 323, serial port module 324, input module 325, output module 326. Detailed implementation manners

[0046] Hereinafter, the exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided so that the present invention can be more thoroughly understood and the scope of the present invention can be completely conveyed to those skilled in the art.

[0047] It should be understood that the terms used herein are only for the purpose of describing specific exemplary embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" as used herein may also include the plural forms. The terms "comprising", "including", "containing", and "having" are inclusive and thus specify the presence of the stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the particular order described or illustrated, unless the order of execution is explicitly stated. It should also be understood that additional or alternative steps may be used.

[0048] Although terms such as first, second, and third may be used in the text to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or section from another region, layer, or section. Unless the context clearly indicates otherwise, terms such as "first", "second", and other numerical terms do not imply an order or sequence when used in the text. Therefore, the first element, component, region, layer, or section discussed below may be referred to as the second element, component, region, layer, or section without departing from the teachings of the exemplary embodiments.

[0049] For ease of description, spatially relative terms may be used in the text to describe the relationship of one element or feature shown in the figure to another element or feature, such as "inside", "outside", "inner side", "outer side", "below", "above", etc. Such spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure.

[0050] The intelligent manhole cover for the escape wellhead of the utility tunnel provided by the embodiment of the present invention includes a manhole cover body, a locking structure, and a control unit.

[0051] According to Figure 1 As shown, the manhole cover body 1 includes a cast iron manhole cover 11, a cast iron manhole seat 12, a cast iron extended chassis 13, a gas-liquid boosting device 14, and a follow-up protection device 15.

[0052] Specifically, the cast iron extended chassis 13 has an outer square and inner round hole structure and is placed on the well platform foundation of the escape well. After the cast iron manhole seat 12 and the cast iron manhole cover 11 are connected by a hinge and used as a whole, they are fixedly connected after being aligned with the manhole of the cast iron extended chassis 13.

[0053] The gas-liquid boosting device 14 pre-stores a certain amount of compressed gas-liquid mixture according to the self-weight of the manhole cover with different load-bearing grades. One end of the gas-liquid boosting device 14 is fixedly connected to the bottom bracket 16 on one side of the cast iron manhole seat 12, and the other end is fixedly connected to the upper bracket 17 at the bottom of the cast iron manhole cover 11. Preferably, the horizontal position of the connection point with the bottom bracket 16 is lower than its connection point with the upper bracket 17, so that it has a positive angle relative to the horizontal manhole cover, thereby generating a vertical upward force component to provide assistance when the user pushes open the cast iron manhole cover 11.

[0054] According to Figure 2As shown, the accompanying protection device 15 includes an inner accompanying slide rail 151, an outer accompanying slide rail 152, and a split pin 153. The inner accompanying slide rail 151 is provided with an oblong hole 154, and the split pin installed on the outer accompanying slide rail 152 slides within the oblong hole 154, and its sliding stroke is less than the maximum stroke of the air-liquid boosting device 14. Among them, after the inner accompanying slide rail 151 and the outer accompanying slide rail 152 are assembled, their upper and lower mounting points are coaxially installed on the bottom bracket 16 and the upper bracket 17 with the upper and lower mounting holes of the air-liquid boosting device 14, and after the long screw is inserted, it is fixed with a lock screw. The accompanying protection device 15 can move forward with the air-liquid boosting device 14. Because its stroke is less than that of the air-liquid boosting device 14, when the manhole cover is opened, it will reach the position prior to the air-liquid boosting device 14, preventing the excessive potential energy in the latter stage of the manhole cover bouncing process from damaging the sealing parts of the air-liquid boosting device, and preventing the lateral force caused by excessive manufacturing and installation errors or improper operation from damaging the air-liquid boosting device 14. Its outstretched wing surface can provide a protection barrier for the air-liquid boosting device 14 to prevent the air-liquid boosting device 14 from being knocked and deformed.

[0055] According to Figure 3 , Figure 4 As shown, the lock structure 2 includes a lock housing 201, a lock pin fixing frame 202, a curved lock pin 203, a return spring 204, a transmission toggle 205, a transmission link 206, a transmission pressure rod 207, and an operation handle 208.

[0056] Specifically, the lock housing 201 is installed at the bottom of the cast iron manhole cover 11; one end of the lock housing 201 is fixedly connected to the lock pin fixing frame 202; one side of the lock pin fixing frame 202 is connected to the curved lock pin 203 through a pin shaft, and a return spring 204 is arranged at the bottom of the curved lock pin 203. Under normal conditions, the curved lock pin 203 pops out, and the manhole cover is locked by clamping the well seat bearing along the curved surface side. An opening for accommodating one end of the transmission toggle 205 is opened on the inner side of the curved lock pin 203; the lock pin fixing frame 202 is also connected to the transmission toggle 205 through a pin shaft, and the transmission toggle 205 moves with the pin shaft position as the fulcrum. When the transmission toggle 205 is pressed down, the curved lock pin 203 retracts inward. The other side of the lock housing 201 is connected to the transmission link 206 through a movable pin. A transmission pressure rod 207 is fixedly arranged on the transmission link 206. The transmission pressure rod 207 is connected to the transmission toggle 205. An operation handle 208 is arranged at the bottom of the transmission link 206. When the operation handle 208 is pushed upward, the transmission link 206 moves upward with the pin shaft as the fulcrum, driving the transmission pressure rod 207 to press the transmission toggle 205, and the transmission toggle 205 drives the curved lock pin 203 to retract inward, automatically completing the emergency unlocking.

[0057] In some implementations, an external unlocking port is provided at the upper part of the lock housing 201, and a waterproof sealing rubber ring 209 is configured at the external unlocking port. After the lock is installed in place and tightened with the manhole cover, the sealing ring 209 is pressed by the manhole cover and the lock housing to prevent water outside the well from leaking in.

[0058] In some implementations, an emergency unlocking lock core 210 and an electromagnetic lock 211 are also fixedly provided on the lock housing 201. A reversing disk 212 is fixedly provided at the bottom of the emergency unlocking lock core 210. A special unlocking key can be inserted into the emergency unlocking lock core 210 through a reserved unlocking hole in the manhole cover. After turning the lock core, the horizontal circumferential force of the unlocking operation is changed into a downward pressure on the transmission rocker 205 through the reversing disk 212, and the inner receiving curved surface lock pin 203 is retracted to complete the unlocking operation outside the well. Under normal conditions, the iron core of the electromagnetic lock remains in the released state, restricting the movement of the reversing disk 212, so that external personnel cannot unlock the manhole cover even when holding special tools. When the control unit issues an unlocking command, the iron core of the electromagnetic lock is electrically attracted, and at this time, the special tool can be used to unlock.

[0059] In some other implementations, a position sensor 213 is installed at the tail of the electromagnet to feedback the attracted / released state of the electromagnet to the main controller.

[0060] In still some other implementations, a tipping switch 214 is horizontally installed on the lock housing 201 to feedback the opened / closed state of the manhole cover to the main controller.

[0061] In some other implementations, an audible and visual alarm 215 is installed at the lower part of the lock housing 201 to provide an alarm when the manhole cover is illegally opened.

[0062] In some other implementations, an aviation plug 216 is arranged at the tail of the lock housing 201 to aggregate the signal lines of the position sensor, the inclination switch, and the control lines of the electromagnet and the audible and visual alarm, and connect the lock structure to the control unit interface.

[0063] When in use, when opening the manhole cover from the inside out, there is no need to perform the unlocking operation required by a conventional lock on this lock. When grasping the operation handle 208 and pushing open the cast iron manhole cover 11, the operation handle 208 moves forward, and the force is transmitted through the transmission connecting rod 206 - the transmission pressure rod 207 - the transmission rocker 205, automatically completing the unlocking operation, thus greatly reducing the time required for emergency escape; in addition, the operation handle 208 can move forward during operation, increasing the distance between the force application point and the fulcrum (hinge shaft) of the manhole cover, thus achieving the effect of labor saving. For personnel entering from outside the well, they need to use special tools to unlock after an unlocking instruction is issued on the upper computer or the main controller control panel.

[0064] According to Figure 5As shown in the figure, the control unit 3 includes a control panel 31 and a main controller 32. The main controller 32 includes a power supply module 321, a CPU module 322, a network module 323, a serial port module 324, an input module 325, and an output module 326. The control panel 31 is provided with a panel control key 311 and a panel indicator light 312.

[0065] The power supply module 321 is used to provide working power, signals, and control loop power for each component.

[0066] The input module 325 collects the local button control commands of the host computer and the panel control key, is connected through the aviation plug 216 and the lock structure 2, and collects signals such as the electromagnet state signal, the tilt switch signal, and the position sensor.

[0067] The CPU module 322 is used to execute the preset logical relationship according to the commands of the input module 325 and output signals to the output module 326.

[0068] The output module 326 sends signals to the electromagnet 211 and the audible and visual alarm 215 to control the electromagnet 211 and the audible and visual alarm 215 in the lock, and at the same time sends signals to the panel indicator light 312.

[0069] The serial port module 324 is used to upload and download the main controller program.

[0070] The network module 323 is used to communicate with the host computer, send the manhole cover status signal and alarm, and receive remote control commands.

[0071] During use, when personnel normally operate to open the manhole cover, an unlocking command is sent to the CPU module 322 through the on-site control button or the upper computer authorization. The CPU module 322 controls the unlocking of the electromagnetic lock through the output module 326. The position sensor 213 connected to the input module 325 obtains the status of the electromagnetic lock. Then, the control panel indicator 311 is controlled through the output module 326 to indicate the unlocking / locking status, and the status of the lock is uploaded to the upper computer. When the manhole cover is normally opened in place from the inside or outside, the tilt switch is triggered, and a manhole cover opening signal is sent to the CPU module 322 through the input module 325. The CPU module 322 controls the control panel indicator 312 through the output module 326 to indicate the manhole cover opening / closing status, and uploads the manhole cover status. When the manhole cover is illegally opened from the outside without unlocking or emergently opened from the inside, the CPU module 322 controls the sound and light alarm 215 to alarm after preset logical judgment, which plays a role in driving away external illegal intrusions. If it is an internal emergency escape, the location of the escape opening can be guided to other personnel in the corridor. The upper computer can send the status information and alarm information of the manhole cover to the handheld mobile device of the operation and maintenance personnel through the network module 323, and forward the control command of the mobile terminal to the manhole cover main controller. In this way, the nearby unlocking operation of the manhole cover can be realized outside the well. Therefore, the present invention can be monitored through the handheld mobile terminal, the status and alarm of the manhole cover can be viewed through the handheld mobile terminal, and the unlocking / locking operation of the manhole cover can be performed through the handheld mobile terminal.

[0072] During use, the control unit 3 can be placed in the main control box. The main control box is connected to the lock housing 201 under the manhole cover through a special waterproof plug-in connector. Its input and output circuits are connected to control buttons, indicators, electromagnetic locks, tipping switches, position sensors, and sound and light alarm components, and operate according to a predetermined logical relationship. For example, if the manhole cover is opened when the electromagnetic lock is not unlocked, an illegal alarm will be generated, and the status and alarm of the device will be sent through the network module 323, and it will accept the control of the upper computer. Among them, the CPU module, electromagnetic lock, tipping monitoring, position sensing, and handheld mobile terminal involved are all prior arts, and their specific implementation methods will not be elaborated here.

[0073] The main functions of the escape manhole cover for the utility tunnel provided by the present invention will be described in detail below.

[0074] 1. Quick opening function for emergency evacuation

[0075] When an emergency occurs in the corridor and escape is needed, different from traditional hydraulic and electric manhole covers, even in the state of power failure of the system, this escape manhole cover can be quickly and automatically opened by personnel gently pushing the operation handle 208 with one arm, relying on the gas-liquid boosting device 14, ensuring the smoothness of the evacuation passage and enabling the personnel in the corridor to escape safely.

[0076] 2. Dual external protection function

[0077] When personnel outside the corridor need to enter the pipe gallery via the escape manhole cover, they need to obtain permission from the control unit 3 or operate on the handheld mobile terminal. First, issue an unlocking command to the control unit 3 to drive the electromagnetic lock 211 to actuate, unlocking the electromagnetic lock and releasing the limit on the mechanical lock. Then, insert a special tool into the lock core to complete the unlocking operation. Each unlocking instruction remains for a fixed time, and after this time, the electromagnetic lock automatically returns to the locked position.

[0078] 3. Status detection function

[0079] The status information of the device (lock unlocking / locking, manhole cover opening / closing) can be sent to the control center and the handheld mobile terminal of the operation and maintenance personnel via the network.

[0080] 4. Illegal alarm function

[0081] When unauthorized personnel pry open the lock to open the manhole cover or forcefully open the manhole cover by external force (such as large machinery, blasting, etc.) without unlocking the lock structure, the control unit 3 will control the audible and visual alarm 215 to give an alarm and drive them away, and upload the alarm information to the control center and the handheld mobile terminal of the management personnel.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lock structure for the escape wellhead of an integrated pipe gallery, characterized in that The structure of the lock includes: A lock housing for installation at the bottom of the manhole cover; A lock pin fixing frame fixedly connected to the lock housing; A curved lock pin connected to the lock pin fixing frame through a first pin shaft. A return spring is arranged at the bottom of the curved lock pin. An opening is formed inside the curved lock pin. Under normal conditions, the curved lock pin pops out and clamps the well seat bearing edge through the curved surface side to achieve the purpose of locking the manhole cover; A transmission toggle plate connected to the lock pin fixing frame through a second pin shaft. One end of the transmission toggle plate is arranged inside the opening. Taking the position of the second pin shaft as a fulcrum, when the transmission toggle plate is pressed down, the curved lock pin retracts inward; A transmission connecting rod connected to the lock housing through a movable pin; A transmission pressure rod fixedly arranged on the transmission connecting rod, and the transmission pressure rod is connected to the other end of the transmission toggle plate; An operating handle arranged at the bottom of the transmission connecting rod; wherein, When the operating handle is pushed upward, the transmission connecting rod moves upward with the second pin shaft as a fulcrum, drives the transmission pressure rod to press the transmission toggle plate, and the transmission toggle plate drives the curved lock pin to retract inward to complete emergency unlocking; It further includes an emergency unlocking lock core and an electromagnetic lock arranged on the lock housing; A reversing disc is fixedly arranged at the bottom of the emergency unlocking lock core. Under normal conditions, the iron core of the electromagnetic lock remains in a released state, restricting the movement of the reversing disc. When the electromagnetic lock is energized and attracted, the unlocking key can be inserted into the emergency unlocking lock core and rotated. Then, through the reversing disc, the horizontal circumferential force of the unlocking operation is converted into the downward pressure on the transmission toggle plate, and the curved lock pin is retracted inward to complete the unlocking operation outside the well; A tipping switch is horizontally arranged on the lock housing to feedback the open / closed state of the manhole cover.

2. The lock structure according to claim 1, characterized in that, A position sensor is arranged at the tail of the electromagnetic lock to feedback the attracted / released state of the electromagnetic lock.

3. The lock structure according to claim 1, characterized in that, An audible and visual alarm is arranged at the lower part of the lock housing to provide an alarm when the manhole cover is illegally opened.

4. The lock structure according to claim 1, characterized in that, An external unlocking port is arranged at the upper part of the lock housing, and a waterproof sealing rubber ring is configured at the external unlocking port.

5. An intelligent manhole cover dedicated to the escape wellhead of an integrated pipe gallery, characterized in that, This intelligent manhole cover includes a manhole cover body, the lock structure according to any one of claims 1 to 4, and a control unit; The manhole cover body includes a manhole cover, a well seat, an extended chassis, a gas-liquid boosting device, and a follow-up protection device. The well seat and the manhole cover are connected by a hinge and then integrally fixed to the extended chassis; one end of the gas-liquid boosting device is fixedly connected to the bottom bracket on one side of the well seat, and the other end is fixedly connected to the upper bracket at the bottom of the manhole cover; the follow-up protection device and the gas-liquid boosting device are coaxially installed on the bottom bracket and the upper bracket, so that the follow-up protection device can move forward following the gas-liquid boosting device; The control unit is used to connect to the lock structure, monitor the state of the manhole cover, and control the lock structure to execute corresponding unlocking commands.

6. The intelligent manhole cover according to claim 5, characterized in that, The accompanying protection device includes an inner accompanying slide rail, an outer accompanying slide rail and a split pin; the inner accompanying slide rail is provided with an oblong hole, and the split pin installed on the outer accompanying slide rail slides in the oblong hole, and its sliding stroke is less than the maximum stroke of the air-liquid boosting device. Wherein, after the inner accompanying slide rail and the outer accompanying slide rail are assembled, their upper and lower mounting points are coaxially installed on the bottom bracket and the upper bracket with the air-liquid boosting device.

7. The intelligent manhole cover according to claim 5, characterized in that, The control unit includes a control panel and a main controller; panel control keys and panel indicator lights are arranged on the control panel; the main controller includes a power supply module, a CPU module, a network module, a serial port module, an input module and an output module; The power supply module is used to provide working power for each component; The input module is used to collect the control commands of the upper computer and the panel control keys, and collect the state signals of the electromagnetic lock; The output module is used to output signals to the electromagnetic lock and the audible and visual alarm of the lock structure, control the electromagnetic lock and the audible and visual alarm to work, and send signals to the panel indicator lights at the same time; The CPU module is used to execute the preset logical relationship according to the commands of the input module, and send output commands to the output module; The serial port module is used to upload and download the main controller program; The network module is used to communicate with the upper computer, transmit the manhole cover status signal and alarm, and receive remote control commands.

8. The intelligent manhole cover according to any one of claims 5 to 7, characterized in that, The horizontal position of the connection point of the air-liquid boosting device and the bottom bracket is lower than the connection point with the upper bracket, so that it has a positive angle relative to the horizontal manhole cover, thereby generating a vertical upward force component to provide assistance for the user to push open the manhole cover.

Images