Highway tunnel concealed fire hydrant box

Abstract

The utility model discloses a kind of highway tunnel concealed fire hydrant box, belong to road safety fire control field, including box and box door, the box opening end and the curved surface with the same camber of tunnel inner wall are present on the box door surface, at least two groups of parallel link mechanisms are equipped in the box, one end of the parallel link mechanism has the mounting seat of fixed connection with the upper end of box, the other end of parallel link mechanism has the support seat of fixed connection with the lower end of box door, the connecting line between the hinge joint point of parallel link mechanism on the mounting seat and the support seat is parallel to each other, for keeping box door always parallel to the opening of box, the box is connected with each described parallel link mechanism by damping support rod. The utility model's box door is relatively smaller in the interval with the opening process of box, so that enough space is left on the maintenance walkway for personnel to stand, to ensure the safety of personnel and vehicle.

Description

Technical Field

[0001] This utility model relates to the field of road fire protection technology, and in particular to a concealed fire hydrant box for highway tunnels. Background Technology

[0002] In highway tunnels, to ensure safe rescue operations, a fire hydrant box should be installed every 50 meters along the tunnel length. Especially in long tunnels of more than 1,000 meters, the fire hydrant box should be equipped with fire hoses, dry powder fire extinguishers, and water-based foam fire extinguishing devices.

[0003] To avoid obstructing maintenance access, existing tunnel fire hydrant boxes are typically installed using a concealed mounting method. However, to improve the overall aesthetics and safety of the fire hydrant boxes, the opening end of the box and its door are designed as curved surfaces with the same curvature as the tunnel wall. Conventional hinged doors cannot meet these requirements.

[0004] Currently, the market uses a top-hinged door installation method to accommodate the opening of curved door boxes. The top of the door is hinged to the opening of the box body, and damping support rods are provided on both sides of the box body to support the door after it is opened. The two ends of the damping support rods are hinged to the door and the box body respectively. However, this type of top-hinged door requires an opening angle of 90-95° and a door height of 0.7-0.8m. Currently, the width of the maintenance walkway in the tunnel is only 1 meter. Therefore, when the door is opened, maintenance personnel will be forced to move from the maintenance walkway into the driving lane, which poses a safety hazard to vehicles traveling in the tunnel and to themselves. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a concealed fire hydrant box for highway tunnels.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A concealed fire hydrant box for highway tunnels includes a box body and a door. The opening end of the box body and the surface of the door have curved surfaces with the same curvature as the inner wall of the tunnel. The box body is equipped with at least two sets of parallel linkage mechanisms. One end of each parallel linkage mechanism has a mounting base fixedly connected to the upper end of the box body, and the other end has a support base fixedly connected to the lower end of the door. The lines connecting the hinge points of the parallel linkage mechanisms on the mounting base and the support base are parallel to each other, ensuring that the door always opens parallel to the box body. The box body and each of the parallel linkage mechanisms are connected via damping support rods. By connecting the door and the box body through the parallel linkage mechanisms, the door is restricted by the parallel linkage mechanisms during maintenance personnel opening the door, ensuring it always opens parallel to the box body. The radius of the trajectory formed by the door is reduced by half compared to the upward trajectory radius of the door in existing technologies, allowing maintenance personnel to open the fire hydrant box while remaining within the maintenance walkway, thus ensuring safety during operation.

[0008] A partition plate is fixed to the top of the inner side of the enclosure, dividing the inner cavity into a foam extinguishing chamber and a conventional extinguishing chamber. There are two doors, corresponding to the foam extinguishing chamber and the conventional extinguishing chamber respectively. Four parallel linkage mechanisms and four damping support rods are grouped together on the side wall of the enclosure and the partition plate. Designating the doors as two separate doors corresponding to the foam extinguishing chamber and the conventional extinguishing chamber allows maintenance personnel and firefighters to easily open the corresponding chambers as needed, and also reduces the weight of each door, making operation easier.

[0009] The enclosure is equipped with a warning light and a proximity switch for monitoring the movement of any of the damping support rods. The proximity switch is communicatively connected to the warning light via a tunnel fire alarm controller. Opening the enclosure door activates the warning light to alert vehicles and personnel.

[0010] The parallel linkage mechanism includes a drive rod, a driven rod, a connecting part hinged to the proximal ends of the drive rod and the driven rod and fixed on the mounting base, and a connecting plate hinged to the distal ends of the drive rod and the driven rod and fixed on the support base. The drive part is formed at the hinge point between the drive rod and the connecting part. One end of the damping support rod is hinged to the housing, and the other end of the damping support rod is hinged to the drive part.

[0011] The mounting base is an L-shaped base, the vertical part of the L-shaped base forms the connecting part, the damping support rod is a gas spring rod, the cylinder end of the gas spring rod is hinged to the horizontal end of the L-shaped base, and the output shaft of the gas spring rod is hinged to the drive part.

[0012] An outer baffle is fixed to the outside of the box door to prevent the box door from fully entering the box body. An opening adjustment component is provided on the mounting base. The end of the damping support rod is connected to the mounting base via the opening adjustment component to adjust the maximum height of the box door when it is opened.

[0013] The opening adjustment assembly includes a locking bolt and a hinge pin hinged to the end of the damping support rod. The mounting base has an adjustment groove for the locking bolt to move back and forth and a sliding groove for the hinge pin to slide in conjunction with it. The hinge pin, located within the sliding groove, has a threaded hole that mates with the locking bolt. By adjusting the position of the hinge pin at the end of the damping support rod, the door can be adjusted to its highest horizontal position, preventing the top of the door from colliding with the tunnel wall.

[0014] The drive rod has an inward bend near the connecting part, and the inward bend has an avoidance angle to prevent interference with the box body when the box door is flipped up to its highest height.

[0015] The driven rod has a bend in the same direction corresponding to the position of the inner bend, and the inner bend and the bend in the same direction are hinged together by a straight connecting rod. The straight connecting rod enhances the stability of the parallel link structure.

[0016] The proximal ends of the driving rod and the driven rod are coplanarly disposed on the connecting portion, and the distal ends of the driving rod and the driven rod are coplanarly disposed on the connecting plate. The driving rod has an arched portion for avoiding the driven rod.

[0017] The present invention has the following advantages: The present invention connects the door and the box body through a parallel linkage mechanism. During the process of maintenance personnel opening the door, the door is restricted by the parallel linkage mechanism and always opens parallel to the box body. The trajectory radius formed by the door is reduced by half compared with the upward trajectory radius of the door in the prior art, so that maintenance personnel can always open the fire hydrant box while in the maintenance walkway, thus ensuring the safety of the operation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is the front view of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the connection structure between the parallel linkage mechanism and the gas spring rod in this utility model;

[0022] Figure 4 for Figure 2 A magnified view of part A in the image;

[0023] Figure 5 for Figure 3 A magnified view of part B in the image;

[0024] Figure 6 This is a schematic diagram of the drive rod structure in this utility model;

[0025] Figure 7 This is a schematic diagram of the mounting base in this utility model;

[0026] Figure 8 This is a schematic diagram of the structure of the hinge shaft at the end of the damping support rod in this utility model;

[0027] Figure 9 This is a comparative diagram of the present invention and the prior art;

[0028] Figure 10 The different maximum heights of the door correspond to the different positions of the end of the damping support rod in this utility model.

[0029] 1. Housing; 101. Foam extinguishing chamber; 102. Conventional extinguishing chamber; 2. Door; 201. Handle; 202. Outer baffle; 3. Curved surface; 4. Parallel linkage mechanism; 401. Drive rod; 4011. Drive unit; 4012. Inner bend; 4013. Arch bridge; 402. Driven rod; 4021. Same-direction bend; 403. Mounting base; 4031. Connecting part; 4032. Slide groove; 4033. Adjustment groove; 404. Support base; 4041. Connecting plate; 405. Straight connecting rod; 5. Gas spring rod; 501. Hinge; 5011. Threaded hole; 5012. Locking plane; 6. Fire extinguisher; 7. Fire hose; 8. Fire flexible hose; 9. Fire hydrant connector; 10. Divider plate; 11. Warning light; 12. Proximity switch; 13. Locking bolt. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0032] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] like Figure 1 and Figure 2 As shown, this utility model provides a concealed fire hydrant box for highway tunnels, including a box body 1 and a door 2. The box body 1 is embedded and fixed in a pre-reserved opening in the inner wall of the tunnel. To ensure the aesthetics and safety of the fire hydrant box, the opening end of the box body 1 and the surface of the door 2 have curved surfaces 3 with the same curvature as the inner wall of the tunnel. An embedded handle 201 is installed below the door 2 to facilitate opening the door 2. The box body 1 is provided with at least two sets of parallel linkage mechanisms 4. One end of the parallel linkage mechanism 4 has a mounting seat 403 fixedly connected to the upper end of the box body 1, and the other end of the parallel linkage mechanism 4 has a support seat 404 fixedly connected to the lower end of the door 2. The lines connecting the hinge points of the parallel linkage mechanisms 4 located on the mounting seat 403 and the support seat 404 are parallel to each other. During the process of maintenance personnel opening the door 2, the door 2 is restricted by the parallel linkage mechanism 4 and always opens parallel to the box body 1. The trajectory radius formed by the door 2 is reduced by half compared to the upward trajectory radius of the door 2 in the prior art. Figure 9 As shown, during the opening of this fire hydrant box, the shortest distance D2 between the box door 2 and the edge of the maintenance walkway is greater than the shortest distance D1 after the box door 2 is opened in the prior art, and is sufficient for maintenance personnel to stay in the maintenance walkway without having to move backward into the formed passage due to insufficient distance, thus ensuring safety during operation; in order to provide support for the box door 2 after it moves upward in parallel, the box body 1 is connected to each of the parallel linkage mechanisms 4 via damping support rods.

[0034] like Figure 1As shown, a partition plate 10 is fixed to the top of the inner side of the box body 1. The inner cavity of the box body 1 is divided into a foam extinguishing chamber 101 and a conventional extinguishing chamber 102 by the partition plate 10. There are two doors 2, corresponding to the foam extinguishing chamber 101 and the conventional extinguishing chamber 102 respectively. There are four parallel linkage mechanisms 4 and four damping support rods, which are grouped and arranged on the side wall of the box body 1 and the partition plate 10 for connecting to both sides of each door 2. Figure 2 As shown, the foam extinguishing chamber 101 is equipped with a foam liquid storage tank, a fire hose 8, and related connecting pipes for foam extinguishing. The conventional extinguishing chamber 102 is equipped with a fire hydrant connector 9, a fire hose 7, and a fire extinguisher 6. Maintenance personnel and firefighters can open the corresponding chamber door 2 as needed. The weight of a single door 2 is reduced by half compared to a conventional door 2, making it easier for personnel to operate and open.

[0035] like Figure 3 As shown, the parallel linkage mechanism 4 includes a drive rod 401, a driven rod 402, a connecting part 4031 that is hinged to the proximal ends of the drive rod 401 and the driven rod 402 and fixed on the mounting base 403, and a connecting plate 4041 that is hinged to the distal ends of the drive rod 401 and the driven rod 402 and fixed on the support base 404. The drive part 4011 is formed at the hinge point between the drive rod 401 and the connecting part 4031. One end of the damping support rod is hinged to the housing 1, and the other end of the damping support rod is hinged to the drive part 4011.

[0036] Further preferably, in order to achieve quick installation of the damping support rod and the parallel linkage mechanism 4 within the housing 1, such as... Figure 7 As shown, the mounting base 403 is an L-shaped base, and the vertical part of the L-shaped base forms the connecting part 4031. The proximal hinge points of the driving rod 401 and the driven rod 402 are located at the upper and lower ends of the vertical part of the L-shaped base, respectively. The damping support rod is a gas spring rod 5. The cylinder end of the gas spring rod 5 is hinged to the horizontal end of the L-shaped base, and the output shaft of the gas spring rod 5 is hinged to the driving part 4011.

[0037] Further preferred, such as Figure 3 As shown, the proximal ends of the driving rod 401 and the driven rod 402 are coplanarly disposed on the connecting portion 4031, and the distal ends of the driving rod 401 and the driven rod 402 are coplanarly disposed on the connecting plate 4041, as shown. Figure 6 As shown, the drive rod 401 has an arched section 4013 for avoiding the driven rod 402, as... Figure 4As shown, the drive rod 401 has an inner bend 4012 near the connecting part 4031. The inner bend 4012 has an avoidance angle to prevent interference with the box body 1 when the box door 2 is flipped up to its highest height. The arched part 4013 and the inner bend 4012 of the drive rod 401 can ensure that the parallel linkage mechanism 4 can move effectively without interference within the stroke of the gas spring rod 5, and drive the box door 2 to its highest height when the gas spring rod 5 is at its maximum stroke.

[0038] More preferably, the driven rod 402 has a bend 4021 in the same direction corresponding to the position of the inner bend 4012, and the inner bend 4012 and the bend 4021 in the same direction are hinged together by a straight connecting rod 405; the straight connecting rod 405 enhances the stability of the parallel connecting rod structure during movement.

[0039] Further preferred, such as Figure 1 and Figure 4 As shown, the housing 1 is equipped with a warning light 11 and a proximity switch 12 for monitoring the movement of any of the damping support rods. The proximity switch 12 is communicatively connected to the warning light 11 via the tunnel fire alarm controller. Specifically, in this embodiment, the proximity switch 12 is an inductive proximity switch 12, which is mounted on the housing 1 above the output shaft of the gas spring rod 5 via a base. When the housing door 2 is closed, the gas spring rod 5 is in its initial state. At this time, the output shaft of the gas spring rod 5 is horizontally positioned and senses the proximity switch 12 to generate an opening signal. When the housing door 2 is opened, the output shaft of the gas spring rod 5 moves away from the proximity switch 12. The tunnel fire alarm controller receives the disconnection signal from the proximity switch 12 and controls the warning light 11 to operate in a timely manner to remind passing vehicles and personnel that the fire hydrant box is being used for fire fighting and rescue. During maintenance, maintenance personnel can temporarily disconnect the communication connection between the proximity switch 12 and the warning light 11 through the tunnel fire alarm controller to avoid false alarms during maintenance. The inductive proximity switch 12, the gas spring rod 5, the tunnel fire alarm controller, and the warning light 11 are all existing technologies, and their internal operating principles are not described in detail.

[0040] like Figure 1 As shown, an outer baffle 202 is fixed to the outside of the box door 2 to prevent the box door 2 from completely entering the box body 1, so that the box door 2 is stably closed on the outside of the box body 1, as shown. Figure 3 As shown, the mounting base 403 is provided with an opening adjustment component, and the end of the damping support rod is connected to the mounting base 403 via the opening adjustment component to adjust the maximum height of the box door 2 when it is opened; Figure 5 As shown, the opening adjustment assembly includes a locking bolt 13 and a hinge pin 501 hinged to the end of the damping support rod, as... Figure 7As shown, the mounting base 403 has an adjusting groove 4033 for the locking bolt 13 to move back and forth and a sliding groove 4032 that slides in conjunction with the hinge shaft 501. Figure 8 As shown, the hinge shaft 501 located in the slide groove 4032 has a threaded hole 5011 that mates with the locking bolt 13; the end of the damping support rod moves within the slide groove 4032 via the hinge shaft 501 to change the effective stroke range of the damping support rod, thereby adjusting the corresponding adjustment box door 2 to move horizontally to the highest point. In this embodiment, the slide groove 4032 and the adjustment groove 4033 are respectively located on the front and bottom sides of the horizontal part of the L-shaped seat. Figure 3 As shown, when the hinge pin 501 is in the first position of the slide groove 4032, the hinge pin 501 is furthest from the end of the horizontal part of the L-shaped seat, and the highest height of the box door 2 after it flips up and moves horizontally corresponds to... Figure 10 H1 in, such as Figure 10 As shown, due to different tunnel heights, the top of the door 2 may abut against the tunnel wall. In this case, the position of the damping support rod's end needs to be adjusted to change the maximum upward height of the door 2. When the hinge 501 is adjusted to the second position of the slide groove 4032, the hinge 501 is closest to the end of the horizontal part of the L-shaped seat, and the maximum height of the door 2 after upward sliding corresponds to... Figure 10 H2, which is the maximum height at which the door 2 moves upward, is adjusted between H1 and H2.

[0041] When implementing the above technical solution, the box body 1, box door 2, parallel linkage mechanism 4, and gas spring rod 5 are assembled in sequence to form a fire hydrant box. The box body 1 is fixed in the reserved opening in the inner wall of the tunnel by expansion bolts. After the box door 2 is fully opened, observe the distance between the top of the box door 2 and the inner wall of the tunnel. If adjustment is required, loosen the locking bolt 13 and pull the end of the cylinder of the gas spring rod 5 to the corresponding position. At this time, there is a safe distance (10-15cm) between the top of the box door 2 and the inner wall of the tunnel. Tighten the locking bolt 13. With the cooperation of the locking bolt 13 and the threaded hole 5011 of the hinge shaft 501, the head of the locking bolt 13 and the outer side of the hinge shaft 501 are pressed against the surface of the L-shaped seat and the inner wall of the slide groove 4032, respectively. In order to ensure the locking effect, if Figure 8 As shown, the outer surface of the hinge 501 has a locking plane 5012 that fits against the inner wall of the slide groove 4032; when the fire hydrant box is opened, the door 2 is always parallel to the box body 1, and the actual movement path of the door 2 is close to a circular motion around the parallel linkage mechanism 4, so that the distance between the door 2 and the box body 1 is relatively small during the opening process, thereby leaving enough space for personnel to stand on the maintenance walkway to ensure the safety of personnel and vehicles.

[0042] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A concealed fire hydrant box for highway tunnels, comprising a box body and a door, wherein the open end of the box body and the surface of the door have curved surfaces with the same curvature as the inner wall of the tunnel, characterized in that, The enclosure is provided with at least two sets of parallel linkage mechanisms. One end of each parallel linkage mechanism has a mounting base fixedly connected to the upper end of the enclosure, and the other end of each parallel linkage mechanism has a support base fixedly connected to the lower end of the enclosure door. The lines connecting the hinge points of the parallel linkage mechanisms located on the mounting base and the support base are parallel to each other, which is used to keep the enclosure door always open parallel to the enclosure. The enclosure and each of the parallel linkage mechanisms are connected by a damping support rod.

2. The concealed fire hydrant box for highway tunnels according to claim 1, characterized in that, A partition plate is fixed to the top of the inner side of the box. The inner cavity of the box is divided into a foam extinguishing chamber and a conventional extinguishing chamber by the partition plate. There are two doors, which correspond to the foam extinguishing chamber and the conventional extinguishing chamber, respectively. There are four parallel linkage mechanisms and four damping support rods, which are arranged in groups on the side wall of the box and the partition plate.

3. The concealed fire hydrant box for highway tunnels according to claim 1, characterized in that, The enclosure is equipped with a warning light and a proximity switch for monitoring the movement of any of the damping support rods. The proximity switch is communicatively connected to the warning light via a tunnel fire alarm controller.

4. The concealed fire hydrant box for highway tunnels according to any one of claims 1-3, characterized in that, The parallel linkage mechanism includes a drive rod, a driven rod, a connecting part hinged to the proximal ends of the drive rod and the driven rod and fixed on the mounting base, and a connecting plate hinged to the distal ends of the drive rod and the driven rod and fixed on the support base. The drive part is formed at the hinge point between the drive rod and the connecting part. One end of the damping support rod is hinged to the housing, and the other end of the damping support rod is hinged to the drive part.

5. The concealed fire hydrant box for highway tunnels according to claim 4, characterized in that, The mounting base is an L-shaped base, the vertical part of the L-shaped base forms the connecting part, the damping support rod is a gas spring rod, the cylinder end of the gas spring rod is hinged to the horizontal end of the L-shaped base, and the output shaft of the gas spring rod is hinged to the drive part.

6. The concealed fire hydrant box for highway tunnels according to any one of claims 1-3, characterized in that, An outer baffle is fixed to the outside of the box door to prevent the box door from fully entering the box body. An opening adjustment component is provided on the mounting base. The end of the damping support rod is connected to the mounting base via the opening adjustment component to adjust the maximum height of the box door when it is opened.

7. The concealed fire hydrant box for highway tunnels according to claim 6, characterized in that, The opening adjustment assembly includes a locking bolt and a hinge shaft hinged to the end of the damping support rod. The mounting base has an adjustment groove for the locking bolt to move back and forth and a sliding groove that cooperates with the hinge shaft. The hinge shaft located in the sliding groove has a threaded hole that cooperates with the locking bolt.

8. The concealed fire hydrant box for highway tunnels according to claim 4, characterized in that, The drive rod has an inward bend near the connecting part, and the inward bend has an avoidance angle to prevent interference with the box body when the box door is flipped up to its highest height.

9. The concealed fire hydrant box for highway tunnels according to claim 8, characterized in that, The driven rod has a bend in the same direction corresponding to the position of the inner bend, and the inner bend and the bend in the same direction are hinged together by a straight connecting rod.

10. The concealed fire hydrant box for highway tunnels according to claim 4, characterized in that, The proximal ends of the driving rod and the driven rod are coplanarly disposed on the connecting portion, and the distal ends of the driving rod and the driven rod are coplanarly disposed on the connecting plate. The driving rod has an arched portion for avoiding the driven rod.

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