Underground passage entrance and exit structure with internal emergency escape function

Abstract

The utility model relates to an underground passage entrance and exit structure with an internal emergency escape function, which comprises a frame and a cover plate, one side of the cover plate is connected with a first side of the frame through a hinge, and the underground passage entrance and exit structure further comprises a controllable telescopic rod, a telescopic rod mounting seat and a telescopic rod driver, the other end of the telescopic rod driver is rotationally connected with the telescopic rod mounting seat, and the telescopic rod driver is connected to a control signal input end of the controllable telescopic rod; the telescopic rod mounting base is mounted on the side wall of the entrance, the projection position of the telescopic rod mounting base on the vertical face is located below the frame, the frame is mounted in a basic mounting face at the entrance, and the upper surface of the frame is lower than the upper surface of the basic mounting face. Compared with the prior art, the controllable telescopic rod has the advantages that the initial driving force of the controllable telescopic rod is reduced, the attractiveness is improved, and the like.

Description

Technical Field

[0001] The utility model relates to an underground passage entrance and exit structure, in particular to an underground passage entrance and exit structure with an internal emergency escape function. Background Art

[0002] There are many underground construction areas in modern cities, such as underground pipelines. Most of the entrances and exits of these underground construction areas are combined with manhole covers and ladders. First, they cannot be opened from the inside. They are usually opened with mechanical lifting equipment. There are certain risks for personnel to enter underground structures through ladders, and safety cannot be guaranteed. Second, the manhole covers are directly exposed, which does not blend in with the surrounding environment and is very unsightly.

[0003] In order to solve the safety problem, some existing technologies have adopted some internal power-assisting mechanisms to realize opening the cover from the inside, such as setting some hydraulic presses to drive the cover to open. However, most of the existing power-assisting mechanisms rely on program limits, that is, using some posture sensors to obtain the posture of the cover to determine the stroke of the power-assisting mechanism. However, since most entrances and exits are not used frequently and the maintenance frequency is also low, it is difficult to ensure the reliability of precision instruments, resulting in poor actual effects. Utility Model Content

[0004] The purpose of the utility model is to provide an underground passage entrance and exit structure with an internal emergency escape function. By installing a telescopic rod mounting seat on the side wall of the entrance and exit, and the projection position on the vertical plane is located below the frame, and the upper surface of the frame is lower than the upper surface of the foundation mounting surface, the initial angle between the controllable telescopic rod and the cover plate can be increased, and the initial driving force of the controllable telescopic rod can be reduced. On the one hand, the support provided by the inner side edge of the foundation mounting surface can be used as resistance, combined with a smaller initial driving force, without the need for precision devices such as attitude sensors, and the reliability is higher. On the other hand, since the upper surface of the frame is lower than the upper surface of the foundation mounting surface, some cushion layers adapted to the surrounding environment can be arranged on it to improve the aesthetics.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] An underground passage entrance and exit structure with an internal emergency escape function, comprising a frame and a cover plate connected to a first side of the frame by a hinge, the structure further comprising a controllable telescopic rod, a telescopic rod mounting seat, and a telescopic rod driver, one end of the controllable telescopic rod being connected to an inner surface of the cover plate, and the other end being rotatably connected to the telescopic rod mounting seat, and the telescopic rod driver being connected to a control signal input end of the controllable telescopic rod;

[0007] The telescopic rod mounting seat is installed on the side wall of the entrance and exit, and its projection position on the vertical plane is located below the frame. The frame is installed in the basic mounting surface at the entrance and exit position, and its upper surface is lower than the upper surface of the basic mounting surface.

[0008] The connection point between the controllable telescopic rod and the cover plate is located on the side of the cover plate away from the telescopic rod mounting seat.

[0009] The controllable telescopic rod is a hydraulic rod, and the telescopic rod driver is a hydraulic press.

[0010] The controllable telescopic rod is a pneumatic spring, and the telescopic rod driver is a compressed air storage tank.

[0011] The pneumatic spring and the compressed air storage tank are connected via a first gas pipeline, a first solenoid valve is provided on the first gas pipeline, and a control signal input end of the first solenoid valve is connected to a control circuit.

[0012] The control circuit includes a controller, a first switch and a second switch, the first switch and the second switch are connected in parallel, the first switch is a relay, and the second switch is a manual switch. The coil of the relay is connected to the first output pin of the controller, the common contact is connected to a low-voltage DC power supply, and the normally open contact is connected to the control signal input terminal of the first solenoid valve through a current limiting resistor.

[0013] The pneumatic spring and the compressed air storage tank are also connected via a second gas pipeline, and a compression pump and a second solenoid valve are provided on the second gas pipeline.

[0014] The inlet and outlet structure also includes an air compressor connected to the compressed air storage tank.

[0015] The entrance and exit structure includes a first guardrail, one side of which is rotatably connected to the second side of the frame through a bearing, wherein the second side of the frame is a side opposite to the first side.

[0016] The entrance and exit structure also includes a second guardrail, the two sides of which are respectively connected to the cover plate and the first guardrail, and the second guardrail and the cover plate and the first guardrail are all detachably connected.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. By installing the telescopic rod mounting base on the side wall of the entrance and exit, and the projection position on the vertical plane is located below the frame, and the upper surface of the frame is lower than the upper surface of the base mounting surface, the initial angle between the controllable telescopic rod and the cover plate can be increased, and the initial driving force of the controllable telescopic rod can be reduced. On the one hand, the support provided by the side edge on the inner side of the base mounting surface can be used as resistance. Combined with the smaller initial driving force, there is no need for precision devices such as attitude sensors, and the reliability is higher. On the other hand, since the upper surface of the frame is lower than the upper surface of the base mounting surface, some cushions that are adapted to the surrounding environment can be set on it to improve the aesthetics.

[0019] 2. The span between the connection between the controllable telescopic rod and the cover plate and the connection between the controllable telescopic rod and the telescopic rod mounting base is larger, thereby increasing the moment.

[0020] 3. The pneumatic spring solution is adopted, and the control circuit is realized by pure hardware circuit, which has high reliability.

[0021] 4. The hardware circuit supports both manual and automatic control schemes and has strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the main parts of the utility model;

[0023] Figure 2 Schematic diagram of the foundation mounting surface and frame parts;

[0024] Figure 3 Schematic diagram of the overall structure of the application scenario of the utility model;

[0025] Figure 4 is a schematic diagram of the cover;

[0026] Figure 5 It is a schematic diagram of the trajectory of the controllable telescopic rod driving process;

[0027] Figure 6 is a schematic diagram of a driving part using a pneumatic spring;

[0028] Figure 7 A schematic diagram of a control circuit in an embodiment

[0029] Wherein: 1. frame, 2. cover plate, 3. controllable telescopic rod, 4. foundation installation surface, 5. first guardrail, 6. telescopic rod mounting base, 7. compressed air storage tank, 8. pressure reducing valve, 9. first solenoid valve, 10. control circuit, 11. air compressor, 101. track one, 301 and 302 are the axes of the controllable telescopic rod, E, low-voltage DC power supply, K1, relay, R1, current limiting resistor, R2, current limiting resistor, U1, controller. DETAILED DESCRIPTION

[0030] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0031] An underground passage entrance and exit structure with internal emergency escape function, such as Figure 1 and Figure 3 As shown, it includes a frame 1 and a cover plate 2 connected to a first side of the frame 1 by a hinge, and the structure also includes a controllable telescopic rod 3, a telescopic rod mounting seat 6, a telescopic rod driver, one end of the controllable telescopic rod 3 is connected to the inner surface of the cover plate 2, and the other end is rotatably connected to the telescopic rod mounting seat 6, and the telescopic rod driver is connected to the control signal input end of the controllable telescopic rod 3;

[0032] The telescopic rod mounting seat 6 is mounted on the side wall of the entrance and exit, and the projection position on the vertical plane is located below the frame 1. The frame 1 is mounted in the basic mounting surface 4 at the entrance and exit position, and as shown in FIG. Figure 2 As shown, the upper surface is lower than the upper surface of the basic installation surface 4.

[0033] like Figure 5 As shown, in the initial state, the axis position of the controllable telescopic rod 3 is position 301, and when fully opened, the axis position of the controllable telescopic rod 3 is position 302. However, in fact, for the controllable telescopic rod 3, its longest position is position 303. When at position 301, the cover plate 2 is horizontal, so the angle between 301 and the horizontal direction is large. Therefore, by installing the telescopic rod mounting seat 6 on the side wall of the entrance and exit, and the projection position on the vertical plane is located below the frame 1, and the upper surface of the frame 1 is lower than the upper surface of the base mounting surface 4, the initial angle between the controllable telescopic rod 3 and the cover plate 2 can be increased, and the initial driving force of the controllable telescopic rod 3 can be reduced. In addition, on the one hand, the support provided by the side edge on the inner side of the base mounting surface 4 can be used as resistance. Combined with a smaller initial driving force, there is no need for precision devices such as attitude sensors, and the reliability is higher. On the other hand, since the upper surface of the frame 1 is lower than the upper surface of the base mounting surface 4, some cushions that are adapted to the surrounding environment can be set on it to improve the aesthetics.

[0034] In most embodiments, the connection between the controllable telescopic rod 3 and the cover plate 2 is located on the side of the cover plate 2 away from the telescopic rod mounting seat 6, and the span between the connection between the controllable telescopic rod 3 and the cover plate 2 and the connection between the controllable telescopic rod and the telescopic rod mounting seat 6 is larger, thereby increasing the torque.

[0035] In some individual real-time funds, the controllable telescopic rod 3 is a hydraulic rod, and the telescopic rod driver is a hydraulic press, which is lower in cost.

[0036] Of course, in more embodiments, such as Figure 6As shown, the controllable telescopic rod 3 is a pneumatic spring, and the telescopic rod driver is a compressed air tank 7, which has better reliability. In some embodiments, the pneumatic spring and the compressed air tank 7 are connected through a first gas pipeline, and a first solenoid valve 9 is provided on the first gas pipeline. The control signal input end of the first solenoid valve 9 is connected to the control circuit 10, and as shown in FIG. Figure 7 As shown, the control circuit 10 includes a controller U1, a first switch and a second switch, the first switch and the second switch are connected in parallel, the first switch is a relay K1, and the second switch is a manual switch, the coil of the relay K1 is connected to the first output pin of the controller U1, the common contact is connected to the low-voltage DC power supply E, and the normally open contact is connected to the control signal input end of the first electromagnetic valve 9 through a current limiting resistor R2. The control circuit 10 is realized by a pure hardware circuit, and the reliability is high. By manually controlling the second switch to close, the electromagnetic valve can be turned on, so that the air in the compressed air storage tank 7 enters the pneumatic spring to open the cover. Similarly, when the controller U1 outputs a high-level signal, the relay K1 is closed, the normally open end is turned on, and the electromagnetic valve can also be turned on, so that the air in the compressed air storage tank 7 enters the pneumatic spring to open the cover.

[0037] Generally, in such embodiments, a pressure reducing valve 8 may be provided between the first solenoid valve 9 and the compressed air storage tank 7 to improve reliability.

[0038] In addition, in some other embodiments, the pneumatic spring and the compressed air storage tank 7 are connected by a second gas pipeline, and a compression pump and a second solenoid valve are provided on the second gas pipeline. In this way, the control in the pneumatic spring can be reversely drawn into the compressed air storage tank 7 by the compression pump to achieve the closing of the cover plate 2.

[0039] In most embodiments, the inlet and outlet structure also includes an air compressor 11, which is connected to the compressed air storage tank 7 and can be assisted by some pressure gauges to manually or automatically control the air compressor 11.

[0040] In some embodiments, the entrance and exit structure includes a first guardrail 5, one side of which is rotatably connected to the second side of the frame 1 through a bearing, wherein the second side of the frame 1 is a side opposite to the first side. In some further embodiments, the entrance and exit structure also includes a second guardrail, both sides of which are respectively connected to the cover plate 2 and the first guardrail 5, and the second guardrail and the cover plate 2 and the first guardrail 5 are all detachably connected.

[0041] like Figure 4 As shown, in almost all embodiments, some reinforcing ribs may be provided on the cover plate 2 to improve the strength, and the reinforcing ribs may be in the form of a mesh.

[0042] In addition, in some embodiments, two controllable telescopic rods 3 can be provided to improve the balance of opening the cover 2. The frame 1 can be obtained in an integral die-cast form and can be fixed to the base mounting surface 4 with a wall anchor. In addition, a sealing strip can be provided on the edge of the cover 2 to improve the sealing performance.

Claims

1. An underground passage entrance and exit structure with internal emergency escape function, comprising a frame and a cover plate connected to a first side of the frame by a hinge, characterized in that: The structure also includes a controllable telescopic rod, a telescopic rod mounting seat, a telescopic rod driver, one end of the controllable telescopic rod is connected to the inner surface of the cover plate, and the other end is rotatably connected to the telescopic rod mounting seat, and the telescopic rod driver is connected to the control signal input end of the controllable telescopic rod; The telescopic rod mounting seat is installed on the side wall of the entrance and exit, and its projection position on the vertical plane is located below the frame. The frame is installed in the basic mounting surface at the entrance and exit position, and its upper surface is lower than the upper surface of the basic mounting surface.

2. The underground passage entrance and exit structure with internal emergency escape function according to claim 1, characterized in that: The connection point between the controllable telescopic rod and the cover plate is located on the side of the cover plate away from the telescopic rod mounting seat.

3. The underground passage entrance and exit structure with internal emergency escape function according to claim 1, characterized in that: The controllable telescopic rod is a hydraulic rod, and the telescopic rod driver is a hydraulic press.

4. The underground passage entrance and exit structure with internal emergency escape function according to claim 1, characterized in that: The controllable telescopic rod is a pneumatic spring, and the telescopic rod driver is a compressed air storage tank.

5. The underground passage entrance and exit structure with internal emergency escape function according to claim 4, characterized in that: The pneumatic spring and the compressed air storage tank are connected via a first gas pipeline, a first solenoid valve is provided on the first gas pipeline, and a control signal input end of the first solenoid valve is connected to a control circuit.

6. The underground passage entrance and exit structure with internal emergency escape function according to claim 5, characterized in that: The control circuit includes a controller, a first switch and a second switch, the first switch and the second switch are connected in parallel, the first switch is a relay, and the second switch is a manual switch. The coil of the relay is connected to the first output pin of the controller, the common contact is connected to a low-voltage DC power supply, and the normally open contact is connected to the control signal input terminal of the first solenoid valve through a current limiting resistor.

7. The underground passage entrance and exit structure with internal emergency escape function according to claim 5, characterized in that: The pneumatic spring and the compressed air storage tank are also connected via a second gas pipeline, and a compression pump and a second solenoid valve are provided on the second gas pipeline.

8. The underground passage entrance and exit structure with internal emergency escape function according to claim 4, characterized in that: The inlet and outlet structure also includes an air compressor connected to the compressed air storage tank.

9. The underground passage entrance and exit structure with internal emergency escape function according to claim 1, characterized in that: The entrance and exit structure includes a first guardrail, one side of which is rotatably connected to the second side of the frame through a bearing, wherein the second side of the frame is a side opposite to the first side.

10. The underground passage entrance and exit structure with internal emergency escape function according to claim 9, characterized in that: The entrance and exit structure also includes a second guardrail, the two sides of which are respectively connected to the cover plate and the first guardrail, and the second guardrail and the cover plate and the first guardrail are all detachably connected.

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