Urban inspection well protection device with monitoring and alarming functions

Abstract

The invention relates to the technical field of protection devices, in particular to an urban inspection well protection device with monitoring and alarming functions, which comprises a supporting component, an inspection well shaft, an inspection well cover arranged on the inspection well shaft, a protection frame arranged on the outer side of the inspection well cover and a mounting box arranged in the protection frame; the detection part comprises a poison gas detection assembly arranged in the mounting box, a driving assembly arranged in the mounting box, a pipeline assembly arranged on the mounting box and a filtering assembly arranged on the mounting box; the poison gas blocking part comprises a sealing assembly arranged in the inspection well, a gas pumping assembly arranged on the driving assembly and a gear tooth assembly arranged on the sealing assembly; the reset component comprises an exhaust assembly arranged on the gas pumping assembly and a limiting assembly arranged on the exhaust assembly, and the device can be used for poison gas detection and poison gas exhaust, so that the safety of workers is protected.

Description

Technical Field

[0001] The invention relates to the technical field of protective devices, in particular to a protective device for urban manholes with monitoring and alarm functions. Background Art

[0002] Urban manholes refer to vertical shafts used for drainage engineering inspections and cleaning of dredged culvert sludge. When inspecting urban manholes, protective frames are usually set up on the outside for protection to remind people not to approach and prevent them from falling into the manholes.

[0003] During use, most of the existing protective devices are just ice cream cones. Although this method can provide protection to a certain extent, in actual use, this protective device has a single function and cannot detect and extract toxic gases in the manhole (the manhole is used all year round and it is easy to accumulate some garbage. These garbage are organic matter. They are in the manhole all year round. Due to the decay of organic matter, hydrogen sulfide and sulfur dioxide are produced. In addition, the bottom of the manhole is not ventilated, and the concentration is high, which is very harmful). Therefore, after entering manually, it is easy to affect the health due to inhalation of gas. Summary of the invention

[0004] In view of the fact that the above-mentioned prior art uses ice cream cones for kiln protection, the function is single and the poisonous gas in the kiln cannot be detected and extracted, so that after manual entry, it is easy to affect the health of the body due to inhaling gas, the present invention is proposed.

[0005] Therefore, the object of the present invention is to provide a protective device for urban manholes with a monitoring and alarm function.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: including a supporting component, including a manhole shaft, a manhole cover arranged on the manhole shaft, a protective frame arranged on the outside of the manhole cover, and an installation box arranged in the protective frame; a detection component, including a poison gas detection component arranged in the installation box, a driving component arranged in the installation box, a pipeline component arranged on the installation box, and a filter component arranged on the installation box; a poison gas blocking component, including a closing component arranged in the manhole, a pump air component arranged on the driving component, and a gear component arranged on the closing component; a reset component, including an exhaust component arranged on the pump air component and a limit component arranged on the exhaust component.

[0007] As a preferred solution of the protective device for urban manholes with monitoring and alarm functions of the present invention, the poison gas detection component includes a mounting frame fixedly connected to the side wall of the mounting box, an adapter plate is fixedly connected to the side wall of the mounting frame, a poison gas detector is fixedly connected to the adapter plate, a plurality of first alarm lights are arranged on the side wall of the mounting box, and the lower end of the poison gas detector is connected to the lower end of the mounting box.

[0008] As a preferred solution of the urban manhole protection device with monitoring and alarm functions of the present invention, the driving assembly includes a motor fixedly connected to the side wall of the installation box, a first gear is fixedly connected to the output shaft of the motor, a bearing plate is fixedly connected to the inner wall of the installation box, a transmission shaft is rotatably connected to the bearing plate, a second gear meshing with the first gear is fixedly connected to the transmission shaft, and a fan blade is fixedly connected to the end of the transmission shaft.

[0009] As a preferred solution of the urban manhole protection device with monitoring and alarm functions of the present invention, the pipeline assembly includes a storage bin sealed and arranged on the manhole shaft, a cover plate is provided on the storage bin, a first pipe connected to the lower end of the manhole shaft is provided in the storage bin, a second pipe matching the first pipe is provided on the installation box, and a valve is provided on the first pipe.

[0010] As a preferred solution of the urban manhole protection device with monitoring and alarm functions of the present invention, the filter assembly includes an odor filter layer arranged on the upper side of the installation box, an activated carbon filter layer is provided on the upper side of the odor filter layer, and an air outlet grille is provided on the side wall of the installation box.

[0011] As a preferred solution of the protective device for urban manholes with monitoring and alarm functions of the present invention, the closing component includes an annular groove arranged in the manhole shaft, a bearing ring is provided in the annular groove, a plurality of rotating shafts are rotatably connected to the bearing ring, a sector plate is rotatably connected to the rotating shaft, a plurality of the sector plates are combined into a circular ring, and a disc is fixedly connected to the circular ring via a U-shaped plate.

[0012] As a preferred solution of the protective device for urban manholes with monitoring and alarm functions of the present invention, wherein: the pump air assembly includes a cam fixedly connected to the transmission shaft, a pump air cylinder is fixedly connected to the inner wall of the installation box, a sliding plug is sealingly and slidably connected inside the pump air cylinder, a plunger is fixedly connected to the sliding plug, the plunger penetrates the pump air cylinder and is sealingly and slidably connected to the pump air cylinder, the sliding plug is elastically connected to the inner wall of the pump air cylinder through a first spring, and the front and rear ends of the pump air cylinder are both provided with an air inlet pipe and an air outlet pipe, an air inlet check valve is provided in the air inlet pipe, and an air outlet check valve is provided in the air outlet pipe.

[0013] As a preferred solution of the protective device for urban manholes with monitoring and alarm functions of the present invention, wherein: the gear assembly includes an installation box fixedly connected to the side wall of the circular ring, a support ring sliding inside the installation box, meshing teeth provided on the support ring, a third gear meshing with the meshing teeth fixedly connected to the rotating shaft, an air storage box fixedly connected to the side wall of the bearing ring, a slide plate sealingly and slidably connected inside the air storage box, an air storage space is formed between the slide plate and the air storage box, the air outlet pipe is sealed and connected to the air storage space, the slide plate is elastically connected to the inner wall of the air storage box by a second spring, a U-shaped plate penetrating the air storage box is fixedly connected to the slide plate, a bearing rod fixed to the support ring is fixedly connected to the U-shaped plate, the air inlet pipe extends to the outside of the installation box and is sealed and connected to the air inlet pipe, and the first pipe extends to the lower side of the bearing ring.

[0014] As a preferred solution of the protective device for urban manholes with monitoring and alarm functions of the present invention, the exhaust component includes an exhaust port arranged on the air storage box, a connecting port is provided on the slide board, a cavity is provided on the slide board, a closing plate for closing the connecting port is provided in the cavity, and a circular port is provided on the closing plate.

[0015] As a preferred solution of the protective device for urban manholes with monitoring and alarm functions of the present invention, the limiting assembly includes two mounting ports arranged on the slide, a wedge block is fixedly connected to the closing plate, and two top blocks cooperating with the wedge blocks are fixedly connected to the inner wall of the air storage box, the wedge block passes through the slide and is slidably connected to the slide, a guide rod is provided on the closing plate, the closing plate is elastically connected to the inner wall of the cavity through a third spring, and a first guide groove, a second guide groove, a third guide groove, a fourth guide groove and a fifth guide groove connected end to end are provided on the inner wall of the cavity.

[0016] The beneficial effects of the protective device for urban manholes with monitoring and alarm functions of the present invention are as follows: by arranging a detection component, poisonous gas can be detected and extracted; at the same time, by arranging a poisonous gas blocking component, the outlet of the kiln shaft body can be automatically blocked to prevent the poisonous gas from spreading into the air, thereby solving the problem that when using ice cream cones for kiln shaft protection, the function is single and the poisonous gas in the kiln shaft cannot be detected and extracted, so that after manual entry, the health of the person is easily affected by inhaling the gas, thereby achieving the effect of detecting and extracting the poisonous gas and protecting the safety of the workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic diagram of the external structure of the protective frame of the urban manhole protection device with monitoring and alarm functions.

[0019] Figure 2 It is a cross-sectional view of a protective device for urban manholes with monitoring and alarm functions.

[0020] Figure 3 This is a schematic diagram of the external structure of the toxic gas detection component of the protective device for urban manholes with monitoring and alarm functions.

[0021] Figure 4 The present invention is a cross-sectional view of a driving assembly of a protective device for urban manholes with monitoring and alarm functions.

[0022] Figure 5 The present invention is a schematic diagram of the cross-sectional structure of a pump gas assembly of a protective device for urban manholes with monitoring and alarm functions.

[0023] Figure 6 The present invention is a cross-sectional view of the poisonous gas blocking component of a protective device for urban manholes with monitoring and alarm functions.

[0024] Figure 7 A cross-sectional view of a pump cylinder of a protective device for urban manholes with monitoring and alarm functions.

[0025] Figure 8 The present invention is a schematic cross-sectional structure diagram of a gear assembly of a protective device for urban manholes with monitoring and alarm functions.

[0026] Fig. 9 This is a schematic diagram of the external structure of a gear assembly of a protective device for urban manholes with monitoring and alarm functions.

[0027] Fig.10 The present invention is a schematic diagram of the cross-sectional structure of an air storage box of a protective device for urban manholes with monitoring and alarm functions.

[0028] Fig.11 The present invention is a schematic diagram of the cross-sectional structure of a slide plate of a protective device for urban manholes with monitoring and alarm functions.

[0029] Fig.12 The present invention is a front view of a limit assembly of a protective device for urban manholes with monitoring and alarm functions.

[0030] In the figure: 100, supporting component; 101, manhole shaft; 102, manhole cover; 103, protective frame; 104, installation box; 200, detection component; 201, poison gas detection component; 201a, installation frame; 201b, adapter plate; 201c, poison gas detector; 201d, first alarm light; 202, driving component; 202a, motor; 202b, first gear; 202c, bearing plate; 202d, transmission shaft; 202e, second gear; 2 02f, fan blade; 203, pipeline assembly; 203a, storage bin; 203b, cover plate; 203c, first pipeline; 203d, second pipeline; 203e, valve; 204, filter assembly; 204a, odor filter layer; 204b, activated carbon filter layer; 204c, air outlet grille; 300, poison gas blocking component; 301, closing assembly; 301a, annular groove; 301b, bearing ring; 301c, rotating shaft; 301d, fan plate; 301e, Disc; 302, pump air assembly; 302a, cam; 302b, pump air cylinder; 302c, slide plug; 302d, first spring; 302e, air inlet pipe; 302f, air outlet pipe; 303, gear assembly; 303a, bearing box; 303b, support ring; 303c, meshing teeth; 303d, third gear; 303e, air storage box; 303f, slide plate; 303g, second spring; 303h, U-shaped plate; 303i, bearing rod; 400, reset part Parts; 401, exhaust assembly; 401a, exhaust port; 401b, connecting port; 401c, cavity; 401d, closing plate; 401e, round port; 402, limit assembly; 402a, installation port; 402b, wedge block; 402c, guide rod; 402d, third spring; 402e, first guide groove; 402f, second guide groove; 402g, third guide groove; 402h, fourth guide groove; 402i, fifth guide groove; 402j, top block. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0034] Example 1

[0035] Reference Figure 1~Figure 5 , which is the first embodiment of the present invention, and provides a protective device for urban manholes with monitoring and alarm functions, which can realize the effect of poison gas detection and poison gas extraction, and includes a supporting component 100, including a manhole shaft 101, a manhole cover 102 arranged on the manhole shaft 101, a protective frame 103 arranged on the outside of the manhole cover 102, and an installation box 104 arranged in the protective frame 103; a detection component 200, including a poison gas detection component 201 arranged in the installation box 104, A driving component 202 disposed in the installation box 104, a pipeline component 203 disposed on the installation box 104, and a filter component 204 disposed on the installation box 104; a poisonous gas blocking component 300, including a sealing component 301 disposed in the manhole, a pump air component 302 disposed on the driving component 202, and a gear component 303 disposed on the sealing component 301; a reset component 400, including an exhaust component 401 disposed on the pump air component 302, and a limit component 402 disposed on the exhaust component 401.

[0036] Specifically, the protective frame 103 here can be folded, so it is convenient for storage, and the staff can fold and store the protective frame 103 when not in use, which improves the convenience of the protective frame 103. A plurality of warning signs are arranged on the outside of the protective frame 103, and warning slogans can be set on the plurality of warning signs. The warning slogans on the warning signs can be used to warn nearby mobile personnel that construction is underway here and please do not approach. The solar panels on the protective frame 103 can provide electrical energy, and an inverter and a battery are also arranged on the back of the solar panels, so that electrical energy can be stored. This is the existing technology and will not be elaborated here. The setting of the solar panels does not require a special power connection, and is more convenient to use.

[0037] Furthermore, the poison gas detection component 201 includes an installation frame 201a fixedly connected to the side wall of the installation box 104, an adapter plate 201b is fixedly connected to the side wall of the installation frame 201a, a poison gas detector 201c is fixedly connected to the adapter plate 201b, a plurality of first alarm lights 201d are provided on the side wall of the installation box 104, and the lower end of the poison gas detector 201c is connected to the lower end of the installation box 104; the driving component 202 includes a motor 202a fixedly connected to the side wall of the installation box 104, a first gear 202b is fixedly connected to the output shaft of the motor 202a, a bearing plate 202c is fixedly connected to the inner wall of the installation box 104, a transmission shaft 202d is rotatably connected to the bearing plate 202c, a second gear 202e meshing with the first gear 202b is fixedly connected to the transmission shaft 202d, and a fan blade 202f is fixedly connected to the end of the transmission shaft 202d.

[0038] Among them, the setting of the adapter plate 201b is to turn to avoid the collision between the gas detector 201c and the installation box 104, the first alarm light 201d serves as an alarm, the odor filter layer 204a and the activated carbon filter layer 204b filter and purify the gas to prevent the poisonous gas from spreading into the air.

[0039] Preferably, the pipeline assembly 203 includes a first pipe 203c sealed on the side wall of the installation box 104, a storage bin 203a is provided at the upper end of the manhole shaft 101, a cover plate 203b is provided on the storage bin 203a, a first pipe 203c connected to the lower end of the manhole shaft 101 is provided in the storage bin 203a, and a second pipe 203d matching the first pipe 203c is provided on the installation box 104; the filter assembly 204 includes an odor filter layer 204a arranged on the upper side of the installation box 104, an activated carbon filter layer 204b is provided on the upper side of the odor filter layer 204a, and an air outlet grille 204c is provided on the side wall of the installation box 104.

[0040] It should be noted that a sealing ring is provided on the cover plate 203b, which can seal the storage bin 203a. The first pipe 203c and the second pipe 203d can be sealed by interference fit or by threading. The sealing method here is not limited as long as a sealed connection can be achieved, and the sealed connection belongs to the prior art.

[0041] When in use, the designated storage battery is charged by the solar panel, and the storage battery is used to power other electrical devices in the device. Then, the installation box 104 is placed on the manhole cover 102, and the cover plate 203b of the storage bin 203a is opened to connect the first pipe 203c with the second pipe 203d, and the valve 203e on the first pipe 203c is opened, and the motor 202a in the installation box 104 is started. The output end of the motor 202a drives the two second gears 202e to rotate through the first gear, thereby driving the two gears 202e to rotate. The shaft 301c rotates, driving the two sets of fan blades 202f to rotate, and the poisonous gas is drawn into the installation box 104 through the second pipe 203d. After being filtered through the odor filter layer 204a and the activated carbon filter layer 204b, it is discharged through the air outlet grilles 204c on both sides of the installation box 104. When entering the installation box 104, the poisonous gas detector 201c performs poisonous gas detection. When there is poisonous gas, the first alarm light 201d alarms, and the motor 202a continues to rotate at this time. When there is no poisonous gas, the motor 202a can be stopped.

[0042] In summary, by setting up the detection component 200, the poisonous gas in the manhole shaft 101 can be extracted, and the poisonous gas detector 201c can be used to determine whether the poisonous gas has been completely extracted, thereby preventing workers from entering the manhole shaft 101 and inhaling the poisonous gas, thereby protecting the workers' health and construction safety.

[0043] Example 2

[0044] Reference Figure 6~Figure 12 , which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides a blocking component of a protective device for a city manhole with a monitoring and alarm function, which solves the problem of automatically closing the manhole shaft 101 when extracting poisonous gas. It includes a sealing component 301, including an annular groove 301a arranged in the manhole shaft 101, a bearing ring 301b is arranged in the annular groove 301a, and a plurality of rotating shafts 301c are rotatably connected to the bearing ring 301b. The rotating shaft 301c is rotatably connected to a sector plate 301d. The plurality of sector plates 301d are combined into a circular ring, and a disc 301 is fixedly connected to the circular ring through a U-shaped plate 303h. e; The pump air assembly 302 includes a cam 302a fixedly connected to the transmission shaft 202d, a pump air cylinder 302b fixedly connected to the inner wall of the carrier box 303a, a sliding plug 302c sealingly and slidably connected inside the pump air cylinder 302b, a plunger fixedly connected to the sliding plug 302c, the plunger penetrates the pump air cylinder 302b and is sealingly and slidably connected to the pump air cylinder 302b. The sliding plug 302c is elastically connected to the inner wall of the pump air cylinder 302b through a first spring 302d, and the front and rear ends of the pump air cylinder 302b are both provided with an air inlet pipe 302e and an air outlet pipe 302f, an air inlet check valve is provided in the air inlet pipe 302e, and an air outlet check valve is provided in the air outlet pipe 302f.

[0045] Specifically, the supporting ring 301b here is placed on the inner wall of the annular groove 301a, so that when it is necessary to enter the manhole shaft 101, the supporting ring 301b can be dropped out, which is convenient to use. The fan-shaped plate 301d is combined into a circular ring and cooperates with the disc 301e, and then cooperates with the supporting ring 301b to close the upper end of the manhole shaft 101. The outer end of the plunger here is arranged in an arc shape, so that it can cooperate with the cam 302a to avoid jamming between the cam 302a. The setting of the air inlet check valve and the air outlet check valve here ensures the one-way flow of gas. An opening will be set on the manhole cover 102 to conduct water, so that the manhole needs to be completely closed when pumping air to avoid leakage of toxic gas.

[0046] Furthermore, the gear assembly 303 includes a carrier box 303a fixedly connected to the side wall of the circular ring, a support ring 303b is slidably arranged in the carrier box 303a, a meshing tooth 303c is arranged on the support ring 303b, a third gear 303d meshing with the meshing tooth 303c is fixedly connected to the rotating shaft 301c, an air storage box 303e is fixedly connected to the side wall of the carrier ring 301b, a slide plate 303f is sealed and slidably connected in the air storage box 303e, and a storage space is formed between the slide plate 303f and the air storage box 303e. The air outlet pipe 302f is sealed and connected with the air storage space, the slide plate 303f is elastically connected with the inner wall of the air storage box 303e through the second spring 303g, the slide plate 303f is fixedly connected with a U-shaped plate 303h which passes through the air storage box 303e, the U-shaped plate 303h is fixedly connected with a bearing rod 303i fixed with the support ring 303b, the air inlet pipe 302e extends to the outside of the bearing box 303a and is sealed and connected with the air inlet pipe 302e, and the first pipe 203c extends to the lower side of the bearing ring 301b.

[0047] It should be noted that the meshing teeth 303c are wide enough so that the meshing teeth 303c will not be disengaged from the third gear 303d when meshing. Meanwhile, the air storage box 303e is located on the upper side of the gear, so that the U-shaped plate 303h will not be stuck when the U-shaped plate 303h moves.

[0048] When in use, the rotating shaft 301c rotates, driving the fan blade 202f to rotate, and at the same time, the cam 302a can be driven. When the cam 302a rotates, the longer side and the shorter side of the cam 302a are in turn against the plunger. When the longer side is against the plunger, the plunger can be pushed to move in the direction of the slide plate 303f, so that the slide plate 303f moves, and the first spring 302d is compressed. When the slide plate 303f moves, the gas at the inner end of the pump cylinder 302b can be pumped into the gas storage space. At the same time, the external gas is drawn into the front end of the pump cylinder 302b through the air inlet pipe 302e, so that the slide plate 303f moves, thereby driving the support ring 303b. Sliding causes the meshing teeth 303c to drive the third gear 303d to rotate, causing the rotating shaft 301c to rotate, and as the slide plate 303f moves, the rotating shaft 301c rotates at a larger angle until multiple fan-shaped plates 301d are combined into a circular ring. At this time, the load-bearing ring 301b, the fan-shaped plates 301d and the combined circular ring are used to seal the upper end of the manhole shaft 101 to prevent the leakage of toxic gas. When the slide plate 303f is reset, the external gas can be drawn into the inner end of the pump cylinder 302b, and the gas at the outer end of the pump cylinder 302b can be pumped into the gas storage space, thereby ensuring that the gas is always pumped, avoiding the reset of the slide plate 303f, and ensuring the stability of the seal.

[0049] In summary, after the poisonous gas is detected, the transmission shaft 202d rotates to drive the fan blades 202f to rotate to absorb the poisonous gas, and can also pump air to rotate multiple fan-shaped plates 301d. The supporting ring 301b, the fan-shaped plates 301d and the combined circular ring close the upper end of the manhole shaft 101 to prevent the leakage of poisonous gas.

[0050] Example 3

[0051] Reference Figure 6~Figure 12, which is the third embodiment of the present invention. Different from the previous embodiment, this embodiment provides a reset component 400 of a protective device for a city manhole with a monitoring and alarm function, which solves the problem of how to avoid high air pressure and keep the manhole shaft 101 open again. It includes an exhaust component 401, including an exhaust port 401a arranged on an air storage box 303e, a connecting port 401b is arranged on a slide plate 303f, a cavity 401c is arranged on the slide plate 303f, a closing plate 401d for closing the connecting port 401b is arranged in the cavity 401c, and a round port 401e is arranged on the closing plate 401d; a limit component 402 includes an exhaust port 401a arranged on the slide plate 303e, a connecting port 401b is arranged on the slide plate 303f, and a cavity 401c is arranged in the cavity 401c. 03f, a wedge block 402b is fixedly connected to the closing plate 401d, two top blocks 402j that cooperate with the wedge block 402b are fixedly connected to the inner wall of the air storage box 303e, the wedge block 402b passes through the slide plate 303f and is slidably connected to the slide plate 303f, a guide rod 402c is provided on the closing plate 401d, and the closing plate 401d is elastically connected to the inner wall of the cavity 401c through the third spring 402d, and the inner wall of the cavity 401c is provided with a first guide groove 402e, a second guide groove 402f, a third guide groove 402g, a fourth guide groove 402h and a fifth guide groove 402i that are connected end to end.

[0052] Specifically, the first guide groove 402e, the second guide groove 402f, the third guide groove 402g, the fourth guide groove 402h and the fifth guide groove 402i are all oblique grooves, a concave point is formed between the third guide groove 402g and the fourth guide groove 402h, the slope of the third guide groove 402g is greater than the slope of the fourth guide groove 402h, and the two mounting openings 402a are respectively arranged at both ends of the slide plate 303f, so that the slide plate 303f is not penetrated from the left and right directions, and no air storage space will occur. In order to solve the problem of internal gas leakage, the exhaust speed of the circular mouth 401e is the same as the exhaust speed of the outlet pipe 302f, so as to ensure that the slide plate 303f remains in a certain position. The supporting box 303a is on the ground, and the pipe of the gas detector 201c on the side wall of the supporting box 303a extends to the inside of the manhole. The air inlet will be provided with a pipe directly connected to the lower side of the supporting ring 301b. There is a joint between the pipe and the outlet pipe 302f, so as to facilitate the movement and disassembly of the supporting box 303a.

[0053] When in use, when the slide plate 303f moves to the limit, the wedge block 402b and the top block 402j are against each other, so that the wedge block 402b moves, and the third spring 402d is compressed, so that the closing plate 401d moves, so that the circular opening 401e on the closing plate 401d is directly opposite to the connecting opening 401b, and at the same time, the guide rod 402c moves from the first guide groove 402e to the second guide groove 402f, and moves to the connection between the second guide groove 402f and the third guide groove 402g. When the motor 202a stops rotating, it does not pump air into the air storage space. At this time, under the second spring 303g, the slide plate 303f is reset. When resetting, the guide rod 402c moves into the third guide groove 402g (the connection between the second guide groove 402f and the third guide groove 402g here is an arc). , and the arc is biased toward the second guide groove 402f, so that the guide rod 402c will move into the third guide groove 402g) and move to the concave point. At this time, the closing plate 401d is not reset, so that the gas in the gas storage space is discharged, and the reset of the slide plate 303f is avoided. When the slide plate 303f is reset, the top plate and the wedge block 402b are abutted again. Since the slope of the third guide groove 402g is greater than the slope of the fourth guide groove 402h, the guide rod 402c moves to the fourth guide groove 402h, and moves to the connection between the fifth guide groove 402i and the fourth guide groove 402h, so that the next time the slide plate 303f moves, the guide rod 402c is reset along the fifth guide groove 402i, so that the closing plate 401d is reset, and the gas storage space is avoided from being exhausted, resulting in the slide plate 303f being unable to move.

[0054] In summary, when the cam 302a rotates to continuously pump air, it can also exhaust air, thereby avoiding excessive air pressure in the air storage space. At the same time, when the slide plate 303f is reset, it can also continue to exhaust air to avoid obstruction in the reset of the slide plate 303f and ensure the stability of the movement of the slide plate 303f.

[0055] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete element may be changed or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to an alternative embodiment. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0056] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention).

[0057] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A protective device for urban manholes with monitoring and alarm functions, characterized in that: include, It comprises a supporting component (100), comprising a manhole shaft (101), a manhole cover (102) arranged on the manhole shaft (101), a protective frame (103) arranged outside the manhole cover (102), and a mounting box (104) arranged inside the protective frame (103); A detection component (200), comprising a poison gas detection component (201) disposed in the installation box (104), a drive component (202) disposed in the installation box (104), a pipeline component (203) disposed on the installation box (104), and a filter component (204) disposed on the installation box (104); The poisonous gas blocking component (300) comprises a sealing component (301) arranged in the manhole, a pump gas component (302) arranged on the driving component (202), and a gear component (303) arranged on the sealing component (301); The reset component (400) comprises an exhaust component (401) arranged on the air pump component (302) and a limit component (402) arranged on the exhaust component (401).

2. The urban manhole protection device with monitoring and alarm functions as claimed in claim 1, characterized in that: The poison gas detection component (201) comprises a mounting frame (201a) fixedly connected to a side wall of a mounting box (104); an adapter plate (201b) is fixedly connected to the side wall of the mounting frame (201a); a poison gas detector (201c) is fixedly connected to the adapter plate (201b); a plurality of first alarm lights (201d) are provided on the side wall of the mounting box (104); and a lower end of the poison gas detector (201c) is connected to a lower end of the mounting box (104).

3. The urban manhole protection device with monitoring and alarm functions as claimed in claim 2, characterized in that: The driving assembly (202) comprises a motor (202a) fixedly connected to a side wall of the installation box (104); a first gear (202b) is fixedly connected to an output shaft of the motor (202a); a bearing plate (202c) is fixedly connected to an inner wall of the installation box (104); a transmission shaft (202d) is rotatably connected to the bearing plate (202c); a second gear (202e) meshing with the first gear (202b) is fixedly connected to the transmission shaft (202d); and a fan blade (202f) is fixedly connected to the end of the transmission shaft (202d).

4. The urban manhole protection device with monitoring and alarm functions as claimed in claim 3, characterized in that: The pipeline assembly (203) comprises a storage bin (203a) sealed and arranged on a manhole shaft (101) (101); a cover plate (203b) is provided on the storage bin (203a); a first pipe (203c) communicating with the lower end of the manhole shaft (101) (101) is provided in the storage bin (203a); a second pipe (203d) matching with the first pipe (203c) is provided on the installation box (104); and a valve (203e) is provided on the first pipe (203c).

5. The urban manhole protection device with monitoring and alarm functions as claimed in claim 4, characterized in that: The filter assembly (204) comprises an odor filter layer (204a) arranged on the upper side of the installation box (104), an activated carbon filter layer (204b) is arranged on the upper side of the odor filter layer (204a), and an air outlet grille (204c) is arranged on the side wall of the installation box (104).

6. The urban manhole protection device with monitoring and alarm functions as claimed in claim 4 or 5, characterized in that: The closure assembly (301) comprises an annular groove (301a) arranged in the manhole shaft (101), a bearing ring (301b) being arranged in the annular groove (301a), a plurality of rotating shafts (301c) being rotatably connected to the bearing ring (301b), a sector plate (301d) being rotatably connected to the rotating shaft (301c), a plurality of sector plates (301d) being combined into a circular ring, a circular ring being fixedly connected to a disc (301e) via a U-shaped plate (303h).

7. The urban manhole protection device with monitoring and alarm functions as claimed in claim 6, characterized in that: The pump air assembly (302) comprises a cam (302a) fixedly connected to a transmission shaft (202d); a pump air cylinder (302b) is fixedly connected to the inner wall of the installation box (104); a sliding plug (302c) is sealingly and slidably connected inside the pump air cylinder (302b); a plunger is fixedly connected to the sliding plug (302c); the plunger penetrates the pump air cylinder (302b) and is sealingly and slidably connected to the pump air cylinder (302b); the sliding plug (302c) is elastically connected to the inner wall of the pump air cylinder (302b) via a first spring (302d); an air inlet pipe (302e) and an air outlet pipe (302f) are both provided at the front and rear ends of the pump air cylinder (302b); an air inlet check valve is provided inside the air inlet pipe (302e); and an air outlet check valve is provided inside the air outlet pipe (302f).

8. The urban manhole protection device with monitoring and alarm functions as claimed in claim 7, characterized in that: The gear assembly (303) comprises a carrying box (303a) fixedly connected to the side wall of the circular ring, a supporting ring (303b) slidingly arranged inside the carrying box (303a), meshing teeth (303c) being arranged on the supporting ring (303b), a third gear (303d) meshing with the meshing teeth (303c) being fixedly connected to the rotating shaft (301c), an air storage box (303e) fixedly connected to the side wall of the carrying ring (301b), a slide plate (303f) sealingly and slidably arranged inside the air storage box (303e), and an air storage space being formed between the slide plate (303f) and the air storage box (303e). The air outlet pipe (302f) is in sealed communication with the air storage space, the slide plate (303f) is elastically connected to the inner wall of the air storage box (303e) via a second spring (303g), a U-shaped plate (303h) penetrating the air storage box (303e) is fixedly connected to the slide plate (303f), a bearing rod (303i) fixed to the support ring (303b) is fixedly connected to the U-shaped plate (303h), the air inlet pipe (302e) extends to the outside of the bearing box (303a) and is in sealed communication with the air inlet pipe (302e), and the first pipeline (203c) extends to the lower side of the bearing ring (301b).

9. The urban manhole protection device with monitoring and alarm functions as claimed in claim 8, characterized in that: The exhaust assembly (401) comprises an exhaust port (401a) arranged on the air storage box (303e), a communication port (401b) is provided on the slide plate (303f), a cavity (401c) is provided on the slide plate (303f), a closing plate (401d) closing the communication port (401b) is provided in the cavity (401c), and a circular port (401e) is provided on the closing plate (401d).

10. The urban manhole protection device with monitoring and alarm functions as claimed in claim 9, characterized in that: The limiting assembly (402) comprises two mounting openings (402a) arranged on the slide plate (303f); a wedge block (402b) is fixedly connected to the closing plate (401d); two top blocks (402j) cooperating with the wedge blocks (402b) are fixedly connected to the inner wall of the gas storage box (303e); the wedge block (402b) passes through the slide plate (303f) and is slidably connected to the slide plate (303f); a guide rod (402c) is provided on the closing plate (401d); the closing plate (401d) is elastically connected to the inner wall of the cavity (401c) via a third spring (402d); and a first guide groove (402e), a second guide groove (402f), a third guide groove (402g), a fourth guide groove (402h) and a fifth guide groove (402i) connected end to end are provided on the inner wall of the cavity (401c).

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