Municipal pipe gallery ventilation opening structure

Abstract

The application relates to a municipal pipe gallery ventilation opening structure and relates to the technical field of municipal construction, which comprises a base installed on the opening of the top of the pipe gallery, a ventilation flow channel communicated with the pipe gallery is formed in the base, and a flow guide fan is fixed on the inner wall of the ventilation flow channel; a vertical protection wall is fixed around the ventilation flow channel on the base, the protection wall is surrounded to form a flow guide channel communicated with the ventilation flow channel; a rainproof plate is arranged above the protection wall, the upper surfaces of the opposite sides of the rainproof plate are arranged in an inclined mode, driving elements for reciprocating the rainproof plate up and down are arranged on the inner wall of the flow guide channel; the rainproof plate is larger than the cross section of the protection wall, the bottom side of the rainproof plate can abut against the upper surface of the protection wall; in the application, when heavy rain and accumulated water are encountered and the drainage around the ventilation opening is poor, rainwater can be prevented from entering the pipe gallery to cause damage, short circuit and other problems to the internal facilities.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of municipal buildings, in particular to a municipal pipe gallery ventilation opening structure. BACKGROUND

[0002] As a key component of urban underground space, the municipal pipe gallery is a tunnel structure specially used for laying various municipal pipelines. It is like the "underground lifeline" of the city, and undertakes the important mission of ensuring the normal operation of the city. The ventilation opening, as an indispensable part of the municipal pipe gallery, plays a crucial role. It is responsible for the air exchange between the inside and outside of the gallery, and can ensure good air quality inside the gallery, maintain suitable temperature and humidity, and timely remove harmful gases and excess heat. Reasonable design of the ventilation opening structure not only relates to the service life of the equipment inside the gallery, but also is closely related to the health and safety of the inspection personnel, and is an important guarantee for the safe and stable operation of the municipal pipe gallery.

[0003] In related technology, a municipal pipe gallery ventilation opening structure includes a base installed on the upper edge of the gallery opening, a ventilation flow channel is formed in the base and communicates with the gallery, a vertical upward protective wall is fixed on the upper side of the base and above the opening of the ventilation flow channel, a rainproof eave is installed above the protective wall, and a flow guiding gap exists between the rainproof eave and the protective wall, and the cross section of the rainproof eave is larger than that of the protective wall.

[0004] However, this seemingly reasonable ventilation opening structure design has exposed some problems in the actual application in the summer rainy area. When the ventilation opening structure is installed outdoors, once it encounters heavy rain and water accumulation, and the drainage around the ventilation opening is not smooth, the water level on the road will rise rapidly. At this time, rainwater can easily flow into the ventilation flow channel through the flow guiding gap between the rainproof eave and the protective wall. Once the rainwater enters the gallery, it will seriously affect the safety of the facilities inside the gallery, may cause equipment damage, short circuit and other problems, and thus affect the normal operation of the entire municipal pipe gallery, so there is obvious room for improvement in the ventilation opening structure. SUMMARY

[0005] The purpose of the present application is to provide a municipal pipe gallery ventilation opening structure to solve the problem that rainwater may flow into the gallery in a heavy rain environment in the related art.

[0006] The municipal pipe gallery ventilation opening structure provided by the present application adopts the following technical solution:

[0007] The utility model provides a municipal pipe gallery ventilation opening structure, which comprises a base installed on the opening of the pipe gallery top, a ventilation flow channel communicated with the pipe gallery is formed in the base, and a guide fan is fixed on the inner wall of the ventilation flow channel; a vertical protective wall is fixed around the ventilation flow channel on the base, and the protective wall surrounds a guide flow channel communicated with the ventilation flow channel; a rainproof plate is arranged above the protective wall, the upper surface of the rainproof plate is inclined on the opposite sides, a driving element for reciprocating the rainproof plate up and down is arranged on the inner wall of the guide flow channel; the rainproof plate is larger than the cross section of the protective wall, and the outer edge of the bottom side of the rainproof plate can abut against the upper surface of the protective wall.

[0008] When heavy rain and water accumulation occur and the drainage around the ventilation opening is poor, the driving element can drive the rainproof plate to move downward, so that the outer edge of the bottom side of the rainproof plate abuts against the upper surface of the protective wall, effectively blocking the gap between the rainproof plate and the protective wall, preventing rainwater from flowing back into the ventilation flow channel through the gap, and preventing rainwater from entering the pipe gallery to cause damage to the internal facilities, short circuit and other problems, thereby ensuring the safety of the facilities in the municipal pipe gallery and maintaining the normal operation of the entire municipal pipe gallery. Compared with the ventilation opening structure in the related art, the risk of rainwater backflow is significantly reduced, and the applicability and reliability of the ventilation opening structure in rainy areas are improved.

[0009] Optionally, a plurality of extension rods extending into the guide flow channel are fixed on the bottom side of the rainproof plate, and the driving element comprises a driving electric cylinder fixed on the inner wall of the guide flow channel in the vertical direction, wherein the telescopic rod of the driving electric cylinder is fixedly connected with the lower end of the extension rod in the vertical direction.

[0010] By adopting the above technical scheme, the telescopic rod of the driving electric cylinder is fixedly connected with the lower end of the extension rod on the bottom side of the rainproof plate, so that the up-and-down reciprocating movement of the rainproof plate can be accurately controlled. When it is necessary to prevent rainwater backflow, the driving electric cylinder can quickly drive the rainproof plate to move downward to abut against the upper surface of the protective wall, effectively blocking the rainwater. In the case of normal ventilation, the driving electric cylinder can also drive the rainproof plate to move upward, ensuring the ventilation effect. This driving mode is simple in structure, fast in response and accurate in control, and can flexibly adjust the position of the rainproof plate according to actual needs, thereby providing reliable protection and ventilation functions for the municipal pipe gallery ventilation opening under different weather conditions, and enhancing the practicability and stability of the ventilation opening structure.

[0011] Optionally, a protective sleeve capable of being sleeved outside the protective wall is fixed on the bottom side of the rainproof plate, and a sealing strip is fixed on the inner side wall of the protective sleeve; when the protective sleeve moves downward with the rainproof plate, the sealing strip can abut against the vertical outer side of the protective wall.

[0012] By adopting the technical scheme, when the rainproof plate moves downward, the protective sleeve is sleeved outside the protective wall body, and the sealing strip of the inner side wall can abut against the vertical outer side of the protective wall body. This design further enhances the sealing between the rainproof plate and the protective wall body, forms multiple waterproof barriers, effectively blocks rainwater from flowing into the ventilation flow channel from the side gap between the rainproof plate and the protective wall body, and greatly reduces the risk of rainwater entering the pipe gallery.

[0013] Optionally, a blocking frame is fixed on the side of the protective sleeve facing the base.

[0014] By adopting the technical scheme, when the rainproof plate moves downward, the protective sleeve is sleeved outside the protective wall body, and the sealing strip of the inner side wall can abut against the vertical outer side of the protective wall body. This design further enhances the sealing between the rainproof plate and the protective wall body, forms multiple waterproof barriers, effectively blocks rainwater from flowing into the ventilation flow channel from the side gap between the rainproof plate and the protective wall body, and greatly reduces the risk of rainwater entering the pipe gallery.

[0015] Optionally, a blocking frame is fixed on the side of the protective sleeve facing the base.

[0016] By adopting the technical scheme, when the rainproof plate moves downward, the protective sleeve is sleeved outside the protective wall body, and the sealing strip of the inner side wall can abut against the vertical outer side of the protective wall body. This design further enhances the sealing between the rainproof plate and the protective wall body, forms multiple waterproof barriers, effectively blocks rainwater from flowing into the ventilation flow channel from the side gap between the rainproof plate and the protective wall body, and greatly reduces the risk of rainwater entering the pipe gallery.

[0017] Optionally, the opposite two side surfaces of the cover plate are rotationally connected with the inner wall of the collecting cavity, a rotation gap is arranged between the cover plate and the inner wall of the collecting cavity, and the upper side surface of the cover plate in a horizontal state is flush with the upper side surface of the base. Two locking plates are relatively slidably arranged on the upper surface of the base and symmetrically arranged on the two sides of the cover plate. When the two locking plates slide towards each other to the upper side of the rotation gap, the cover plate is locked, and when the two locking plates slide away from each other to a dislocation state of the rotation gap, the cover plate is unlocked. The base is provided with a control member and an elastic extrusion member. When the rainproof plate moves downward, the control member drives the two locking plates to slide away from each other to unlock the cover plate, so that rainwater can flow into the collecting cavity. When the rainproof plate moves upward, the elastic extrusion member makes the two locking plates slide towards each other to re-lock the cover plate, thereby ensuring the closure of the collecting cavity.

[0018] By adopting the technical scheme, when the rainproof plate moves downward, the protective sleeve is sleeved outside the protective wall body, and the sealing strip of the inner side wall can abut against the vertical outer side of the protective wall body. This design further enhances the sealing between the rainproof plate and the protective wall body, forms multiple waterproof barriers, effectively blocks rainwater from flowing into the ventilation flow channel from the side gap between the rainproof plate and the protective wall body, and greatly reduces the risk of rainwater entering the pipe gallery.

[0019] Optionally, the two locking plates are fixed with positioning rods on their mutually distal sides, the elastic extrusion member comprises a first spring and a guide block fixed on the upper side of the base, the guide block is provided with guide holes through which the positioning rods pass; the two ends of the first spring are fixedly connected with the guide block and the mutually proximal sides of the locking plates.

[0020] By adopting the above technical scheme, the two ends of the first spring are fixedly connected with the guide block and the locking plates, when the rainproof plate moves upwards, the elastic restoring force of the first spring can push the two locking plates to slide towards each other, thereby automatically locking the cover plate, and the structure is simple and responds quickly. The design of the elastic extrusion member cooperating with the positioning rods and the guide block enhances the reliability and stability of the action of the locking plates.

[0021] Optionally, the control member comprises control rods installed on the upper sides of the locking plates in the vertical direction, the upper ends of the two control rods are provided with guide slopes on their mutually proximal edges; when the blocking frame moves downwards with the waterproof plate, the control rods can be extruded along the guide slopes, so that the two locking plates slide away from each other.

[0022] By adopting the above technical scheme, when the blocking frame moves downwards with the waterproof plate, the guide slopes on the upper ends of the control rods can be used to smoothly extrude the control rods along the guide slopes, thereby driving the two locking plates to slide away from each other to unlock the cover plate. This design ingeniously utilizes the guiding and extruding effects of the slopes to realize the linkage between the blocking frame and the locking plates, without the need for a complex transmission mechanism, and the structure is simple and the action is reliable.

[0023] Optionally, the base is provided with a water guide opening on its vertical side, which communicates with the collecting cavity; a water guide pipe is fixed on the outer edge of the opening of the water guide opening and faces the outside of the base; two fixed plates are slidably arranged on the vertical side of the base and located on both sides of the water guide pipe, the mutually proximal sides of the two fixed plates are provided with fixed notches; the lower end of the control rod is hingedly connected with a sliding seat, the control rod can be adjusted and fixed in rotation along the vertical plane, the rotation plane of the control rod is parallel to the length direction of the locking plate, the sliding seat is slidably arranged on the upper side of the locking plate and can be adjusted and fixed in sliding along the locking plate; the control rod can slide with the sliding seat to a state close to the edge of the base, the control rod can be rotated downwards to a vertical state parallel to the vertical side of the base, the mutually proximal sides of the two control rods in this state are in abutment with the mutually distal sides of the two fixed plates under the action of the elastic extrusion member, and the water guide pipe is clamped into the fixed notches.

[0024] By adopting the technical scheme, when the collecting cavity collects rainwater, the rainwater can be led out through the water guide opening and the water guide pipe to prevent water accumulation. Meanwhile, the control rods can be adjusted and fixed by sliding on the locking plate through the sliding seats and can be adjusted by rotating in the vertical plane. When needed, the locking plate is slid to be close to the edge of the base and is rotated downward to the vertical state. At this time, the sides of the two control rods close to each other are abutted against the sides of the two fixed plates away from each other under the action of the elastic extrusion pieces, the water guide pipe is clamped into the fixed gap, the installation stability of the water guide pipe is ensured, and the smoothness of the rainwater leading out is ensured.

[0025] Optionally, an elastic pad is fixed on the inner wall of the fixed gap.

[0026] By adopting the technical scheme, when the water guide pipe is clamped into the fixed gap, the elastic pad can play a buffering and protection role, reduce the hard collision between the water guide pipe and the inner wall of the fixed gap, avoid the water guide pipe from being damaged and deformed due to extrusion, and prolong the service life of the water guide pipe. Meanwhile, the elastic pad can also increase the friction between the water guide pipe and the fixed gap, so that the water guide pipe is more stable after being clamped and is not easy to loosen or shift.

[0027] In summary, the present application has the following beneficial technical effects:

[0028] When encountering heavy rain and water accumulation and the drainage around the ventilation opening is not smooth, the driving piece can drive the rainproof plate to move downward, so that the outer edge of the bottom side of the rainproof plate is abutted against the upper surface of the protective wall, the gap between the rainproof plate and the protective wall is effectively blocked, rainwater is prevented from flowing back into the ventilation flow channel through the gap, and problems such as damage to internal facilities and short circuit caused by rainwater entering the pipe gallery are prevented. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0030] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application;

[0031] Figure 2 is a schematic diagram of the local cross-sectional structure of the embodiment of the present application embodying the installation cooperation of the rainproof plate;

[0032] Figure 3 is a schematic diagram of the local structure of the embodiment of the present application embodying the installation cooperation of the locking assembly;

[0033] Figure 4 is a schematic diagram of the local cross-sectional structure of the embodiment of the present application embodying the installation cooperation of the control piece;

[0034] Figure 5 is a partial cross-sectional structure diagram of the mounting cooperation of the elastic extrusion piece according to the embodiment of the application;

[0035] Figure 6 is an exploded structure diagram of the mounting distribution of the control rod, the sliding seat and the locking plate according to the embodiment of the application;

[0036] Figure 7 is a partial cross-sectional structure diagram of the mounting cooperation of the fixed plate according to the embodiment of the application;

[0037] Figure 8 is an enlarged diagram of part A in Figure 7

[0038] In the figure, 1 is a base; 11 is a ventilation flow channel; 12 is a flow guide fan; 13 is a collection cavity; 14 is a cover plate; 15 is a water guide pipe; 2 is a protective wall; 21 is a flow guide air duct; 3 is a rainproof plate; 31 is an extension rod; 32 is a protective sleeve; 33 is a sealing strip; 34 is a blocking frame; 4 is a driving piece; 41 is a driving electric cylinder; 5 is a locking assembly; 51 is a locking plate; 511 is a positioning rod; 52 is a control piece; 521 is a control rod; 5211 is a guide inclined surface; 522 is a sliding seat; 5221 is a rotating gap; 53 is an elastic extrusion piece; 531 is a first spring; 532 is a guide block; 6 is a fixed plate; 61 is a fixed gap; 62 is an elastic pad. DETAILED DESCRIPTION

[0039] The application will be further described in detail below with reference to all the drawings.

[0040] Embodiment:

[0041] Referring to Figure 1 and Figure 2 , a municipal pipe gallery ventilation opening structure comprises a base 1 installed on an opening of a pipe gallery, wherein the base 1 is provided with a ventilation flow channel 11 communicated with the pipe gallery, and a flow guide fan 12 is fixed on the inner wall of the ventilation flow channel 11; a vertical protective wall 2 is fixed around the ventilation flow channel 11 on the base 1, wherein the protective wall 2 is arranged to form a flow guide air duct 21 communicated with the ventilation flow channel 11.

[0042] A rainproof plate 3 is arranged above the protective wall 2, wherein the upper surface of the rainproof plate 3 is arranged to be inclined relative to the two opposite sides, and a driving piece 4 for driving the rainproof plate 3 to move up and down is arranged on the inner wall of the flow guide air duct 21; the rainproof plate 3 is larger than the cross section of the protective wall 2, and the outer edge of the bottom side of the rainproof plate 3 can abut against the upper surface of the protective wall 2; in this way, the possibility of rainwater flowing back into the pipe gallery is reduced.

[0043] Referring to Figure 2 ​The bottom side of the rainproof plate 3 is fixed with four extension rods 31 extending into the air guide channel 21, the driving member 4 includes four driving cylinders 41 fixed on the inner wall of the air guide channel 21 in the vertical direction, and the telescopic rods of the driving cylinders 41 are fixedly connected with the lower ends of the extension rods 31 in the vertical upward direction and coaxially; the driving cylinders 41 and the corresponding connecting cables have good waterproof performance;

[0044] The bottom side of the rainproof plate 3 is fixed with a protective sleeve 32 capable of being sleeved outside the protective wall 2, and a sealing strip 33 made of rubber is fixed on the inner side wall of the protective sleeve 32; wherein the sealing strip 33 can be tightly abutted with the vertical outer side of the protective wall 2 when the protective sleeve 32 moves downward with the rainproof plate 3.

[0045] Referring to Figure 2 and Figure 3 , the protective sleeve 32 is fixed with a blocking frame 34 on each of the four sides facing the side surface of the base 1; after the blocking frame 34 moves upward with the rainproof plate 3, there is a gap between the bottom side of the protective sleeve 32 and the upper side of the protective wall 2, and at this time, the blocking frame 34 can protect the corresponding gap on the four sides without affecting the ventilation performance.

[0046] Referring to Figure 3 and Figure 4 , the upper side of the base 1 is provided with a collecting cavity 13 below the blocking frame 34, and a cover plate 14 is detachably installed at the opening of the collecting cavity 13; the opposite two side surfaces of the cover plate 14 are rotationally connected with the inner wall of the collecting cavity 13, and a rotation gap (not shown in the figure) is arranged between the cover plate 14 and the inner wall of the collecting cavity 13, and the upper side of the cover plate 14 in the horizontal state is flush with the upper side of the base 1;

[0047] The upper surface of the base 1 is provided with a locking assembly 5, wherein the locking assembly 5 includes two locking plates 51 relatively sliding on the upper surface of the base 1, and the two locking plates 51 are symmetrically arranged on the two sides of the cover plate 14; when the two locking plates 51 slide towards each other to the upper side of the rotation gap, the cover plate 14 can be locked, and when the two locking plates 51 slide away from each other to the dislocation state of the rotation gap, the cover plate 14 can be unlocked;

[0048] The base 1 is provided with a control member 52 and an elastic extrusion member 53; when the blocking frame 34 moves downward with the rainproof plate 3, the control member 52 can drive the two locking plates 51 to slide away from each other; when the blocking frame 34 moves upward with the rainproof plate 3, the two locking plates 51 can be driven to slide towards each other under the action of the elastic extrusion member 53.

[0049] Referring to Figure 4The base 1 is provided with a water inlet (not shown in the figure) on the vertical side, which is communicated with the collecting cavity 13; the outer edge of the water inlet is fixedly provided with a water guide pipe 15, which faces the outside of the base 1; when the water accumulated in the collecting cavity 13 is used for watering flowers or other purposes, the external pipeline can be detachably connected with the water guide pipe 15, so as to facilitate the multifunctional use of the rainwater in the collecting cavity 13.

[0050] With reference to Figure 3 and Figure 4 , the control member 52 comprises control rods 521 which are installed on the upper side of the locking plates 51 in the vertical direction, and the upper ends of the two control rods 521 are provided with guide inclined surfaces 5211 on the edges close to each other; when the blocking frame 34 moves downward, the blocking frame 34 can press the control rods 521 along the guide inclined surfaces 5211, so that the two locking plates 51 slide away from each other;

[0051] When the blocking frame 34 continues to move downward, the bottom side of the rainproof plate 3 abuts against the upper surface of the protective wall 2, and in this process, the lower edge of the blocking frame 34 presses the cover plate 14 close to the upper side of the protective wall 2, so that the cover plate 14 rotates and unblocks the upper side of the collecting cavity 13, thereby facilitating the collection of rainwater by the collecting cavity 13.

[0052] With reference to Figure 5 , the mutually distant sides of the two locking plates 51 are fixedly provided with two positioning rods 511, and the elastic pressing member 53 comprises a first spring 531 and a guide block 532 fixedly arranged on the upper side of the base 1, and the guide block 532 is provided with guide holes through which the positioning rods 511 pass; the two ends of the first spring 531 are fixedly connected with the guide block 532 and the mutually close sides of the locking plates 51, respectively.

[0053] With reference to Figure 5 , Figure 6 and Figure 7 , the lower end of the control rod 521 is hingedly connected with a sliding seat 522, the vertical surface of the sliding seat 522 away from the protective wall 2 is provided with a rotating gap 5221 for the lower end of the control rod 521 to be placed and rotated, and the lower end of the control rod 521 is rounded; the sliding seat 522 and the lower end of the control rod 521 are rotationally connected through a butterfly bolt;

[0054] The staff can fix the rotating state of the control rod 521 by tightening or loosening the butterfly bolt, and the control rod 521 can be rotated and adjusted in the vertical surface in the rotating gap 5221 and fixed, and the rotating surface of the control rod 521 is parallel to the length direction of the locking plate 51;

[0055] The sliding seat 522 slides on the upper side of the locking plate 51 through the cooperation of the dovetail sliding rail and the dovetail sliding groove, and when the sliding seat 522 slides to a position, another butterfly bolt can be used to fix the state of the sliding seat 522 at this time, which will not be described here.

[0056] Referring to Figure 7 and Figure 8 , two fixed plates 6 are arranged on the vertical side of the base 1 and located on both sides of the water guide pipe 15, and a fixed gap 61 is arranged on the side of the two fixed plates 6 close to each other, and an elastic pad 62 made of rubber is fixed on the inner wall of the fixed gap 61;

[0057] When the control rod 521 slides to the state close to the edge of the base 1 with the sliding seat 522 and is fixed, the control rod 521 is turned downward to the vertical state parallel to the vertical side of the base 1, and the side of the two control rods 521 close to each other can abut against the side of the two fixed plates 6 away from each other under the action of the elastic extrusion piece 53, at this time, the water guide pipe 15 is clamped into the fixed gap 61, and the elastic pad 62 on the inner wall of the fixed gap 61 abuts against the outer circumferential surface of the guide pipe, so as to improve the installation stability of the water guide pipe 15.

[0058] The implementation principle of the embodiment of the application is:

[0059] Initial state: the rainproof plate 3 is in a high position under the driving of the electric cylinder 41, the blocking frame 34 moves upward, the bottom side of the protective sleeve 32 has a gap with the protective wall 2, the blocking frame 34 prevents the gap, and the cover plate 14 is locked and sealed to block the collection cavity 13;

[0060] Rainproof plate 3 moves to the abutting state: when it rains, the rainproof plate 3 moves downward under the driving of the electric cylinder 41, the blocking frame 34 is extruded along the guide slope 5211 of the control rod 521, so that the locking plate 51 slides away from each other to unlock the cover plate 14, and at the same time, the lower edge of the blocking frame 34 extrudes the cover plate 14 to make it rotate, so as to unblock the collection cavity 13 and facilitate the collection of rainwater; until the bottom side of the rainproof plate 3 abuts against the upper surface of the protective wall 2, the rainwater backflow is completed;

[0061] Rainproof plate 3 moves to the abutting state: when it rains, the rainproof plate 3 moves downward under the driving of the electric cylinder 41, the blocking frame 34 is extruded along the guide slope 5211 of the control rod 521, so that the locking plate 51 slides away from each other to unlock the cover plate 14, and at the same time, the lower edge of the blocking frame 34 extrudes the cover plate 14 to make it rotate, so as to unblock the collection cavity 13 and facilitate the collection of rainwater; until the bottom side of the rainproof plate 3 abuts against the upper surface of the protective wall 2, the rainwater backflow is completed;

[0062] Rainproof plate 3 moves to the abutting state: when it rains, the rainproof plate 3 moves downward under the driving of the electric cylinder 41, the blocking frame 34 is extruded along the guide slope 5211 of the control rod 521, so that the locking plate 51 slides away from each other to unlock the cover plate 14, and at the same time, the lower edge of the blocking frame 34 extrudes the cover plate 14 to make it rotate, so as to unblock the collection cavity 13 and facilitate the collection of rainwater; until the bottom side of the rainproof plate 3 abuts against the upper surface of the protective wall 2, the rainwater backflow is completed;

[0063] Unless otherwise defined, the terms used in the present application shall be understood as follows: the terms used in the present application should be understood as having the meanings commonly used by those skilled in the art to which the present application pertains, unless otherwise defined. The terms "first", "second", "third" and the like used in the present application do not indicate any order, number or importance, but are used to distinguish different components. The terms "one" or "a" and the like do not indicate a quantity limitation, but indicate that there is at least one. The terms "include" or "contain" and the like mean that the elements or objects before the "include" or "contain" cover the elements or objects listed after the "include" or "contain" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are used to represent relative positional relationships, which may change accordingly when the absolute positions of the described objects change.

[0064] The embodiments of the present specific implementation are the preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are indicated by the same reference numerals. Therefore, any equivalent changes made in the structure, shape, principle of the present application should be covered by the protection scope of the present application.

Claims

1. A ventilation opening structure for a municipal utility tunnel, comprising a base (1) installed at the top opening of the tunnel, wherein a ventilation channel (11) communicating with the tunnel is provided on the base (1), and a guide fan (12) is fixedly provided on the inner wall of the ventilation channel (11); a vertical protective wall (2) is fixedly provided on the base (1) around the ventilation channel (11), and the protective wall (2) forms a guide duct (21) communicating with the ventilation channel (11); characterized in that, A rainproof plate (3) is provided above the protective wall (2). The two opposite sides of the upper surface of the rainproof plate (3) are inclined. A driving component (4) is provided on the inner wall of the air guide duct (21) to drive the rainproof plate (3) to move up and down reciprocally. The rainproof plate (3) is larger than the cross-section of the protective wall (2). The bottom outer edge of the rainproof plate (3) can abut against the upper surface of the protective wall (2). A protective sleeve (32) that can be fitted onto the outside of the protective wall (2) is fixed on the bottom side of the rainproof plate (3). A sealing strip (33) is fixed on the inner wall of the protective sleeve (32). The sealing strip (33) can abut against the vertical outer side of the protective wall (2) when the protective sleeve (32) moves down with the rainproof plate (3). A barrier frame (34) is fixed on the side of the protective sleeve (32) facing the base (1). A collection cavity (13) located below the barrier frame (34) is opened on the upper side of the base (1). A cover plate (14) covering the opening of the collection cavity (13) is detachably installed. The two opposite sides of the cover plate (14) are rotatably connected to the inner wall of the collection chamber (13). A rotation gap is provided between the cover plate (14) and the inner wall of the collection chamber (13). The upper side of the cover plate (14) in a horizontal state is flush with the upper side of the base (1). Two locking plates (51) are slidably provided on the upper surface of the base (1). The two locking plates (51) are symmetrically arranged on both sides of the cover plate (14). When the two locking plates (51) slide towards each other to the upper side of the rotation gap, the cover plate (14) is locked; when they slide back to back to the misalignment state with the rotation gap, the cover plate (14) is unlocked; the base (1) is provided with a control component (52) and an elastic pressing component (53); when the barrier frame (34) moves down with the rainproof plate (3), the control component (52) drives the locking plates (51) to slide back to back; when it moves up, the two locking plates (51) slide towards each other under the action of the elastic pressing component (53); The control component (52) includes a control rod (521) installed vertically on the upper side of the locking plate (51), and a guide slope (5211) is provided on the upper edge of the two control rods (521) that are close to each other; when the barrier frame (34) moves down with the waterproof plate, it can squeeze the control rod (521) along the guide slope (5211) so that the two locking plates (51) slide in opposite directions; The base (1) has a water inlet on its vertical side that communicates with the collection chamber (13); a water guide pipe (15) is fixedly provided on the outer edge of the opening of the water inlet, facing the outside of the base (1); two fixing plates (6) are slidably provided on the vertical side of the base (1) on both sides of the water guide pipe (15), and fixing notches (61) are provided on the sides of the two fixing plates (6) that are close to each other; The lower end of the control rod (521) is hinged to a sliding seat (522). The control rod (521) can be rotated and fixed along the vertical plane. The rotation surface of the control rod (521) is parallel to the length direction of the locking plate (51). The sliding seat (522) is slidably disposed on the upper side of the locking plate (51). The sliding seat (522) can slide and be fixed along the locking plate (51). The control rod (521) can slide with the sliding seat (522) to a state close to the edge of the base (1). The control rod (521) can rotate downward to a vertical state parallel to the vertical side of the base (1). In this state, the sides of the two control rods (521) that are close to each other are pressed against the sides of the two fixed plates (6) that are far apart from each other under the action of the elastic pressing member (53). The water pipe (15) is inserted into the fixed notch (61).

2. The ventilation opening structure for a municipal utility tunnel according to claim 1, characterized in that, The rainproof plate (3) has several extension rods (31) that extend into the air duct (21) fixed on its bottom side. The driving component (4) includes a driving electric cylinder (41) fixed in the vertical direction on the inner wall of the air duct (21). The telescopic rod of the driving electric cylinder (41) is vertically upward and coaxially fixedly connected to the lower end of the extension rod (31).

3. The ventilation opening structure of a municipal utility tunnel according to claim 1, characterized in that, Several positioning rods (511) are fixed on the sides of the two locking plates (51) that are far apart from each other. The elastic extrusion member (53) includes a first spring (531) and a guide block (532) fixed on the upper side of the base (1). The guide block (532) has a guide hole for the positioning rods (511) to pass through. The two ends of the first spring (531) are fixedly connected to the sides of the guide block (532) and the locking plates (51) that are close to each other.

4. The ventilation opening structure of a municipal utility tunnel according to claim 1, characterized in that, An elastic pad (62) is fixed on the inner wall of the fixed notch (61).

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