Guardrail mechanism capable of being folded and urban underground comprehensive pipe gallery entrance and exit structure with guardrail mechanism

Abstract

The invention discloses a retractable guardrail mechanism which comprises two fixing seats, each fixing seat is provided with a guardrail rod hinged to the fixing seat, and a blocking net is arranged between the two guardrail rods. The invention further discloses an urban underground comprehensive pipe gallery entrance and exit structure with the retractable guardrail mechanism. The problem that according to an existing hidden urban underground comprehensive pipe gallery personnel entrance and exit structure, a guardrail net is inconvenient to fold is solved, and the hidden urban underground comprehensive pipe gallery personnel entrance and exit structure can be widely applied to the field of underground engineering.

Description

Technical Field

[0001] This invention relates to the field of underground engineering technology, and in particular to a retractable guardrail mechanism and an entrance / exit structure for an urban underground utility tunnel incorporating the guardrail mechanism. Background Technology

[0002] Integrated utility tunnels are underground urban pipeline corridors, which are tunnel spaces built underground in cities to integrate various engineering pipelines such as electricity, communications, gas, heating, water supply and drainage. They are equipped with dedicated maintenance ports, hoisting ports and monitoring systems, and are implemented in a unified manner in terms of planning, design, construction and management. They are important infrastructure and "lifelines" to ensure the operation of cities.

[0003] Existing concealed underground utility tunnel personnel entrance structures have the problem that it is inconvenient to retract the guardrails. For example, Chinese invention patent application CN114737601A discloses a concealed stepped underground utility tunnel personnel entrance structure, which can reduce the space occupied by the tunnel entrance. However, this device is inconvenient to retract the guardrails. Therefore, a concealed underground utility tunnel personnel entrance structure is proposed to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the above-mentioned background technology and provide a retractable guardrail mechanism and an entrance / exit structure for an urban underground utility tunnel with the guardrail mechanism, thereby solving the problem that the existing concealed personnel entrance / exit structures for urban underground utility tunnels are inconvenient to retract the guardrail mesh as mentioned in the background technology.

[0005] The present invention provides a retractable guardrail mechanism, comprising two fixed seats, each fixed seat having a guardrail arm hinged thereto, and a netting between the two guardrail arms.

[0006] In the above technical solution, the hinge shaft connecting the fixed base and the guardrail is provided with a motor connected to the power output end.

[0007] In the above technical solution, the fixed base, guardrail, netting and motor are all set inside the guardrail box. The two fixed bases are located at both ends of the guardrail box, the two guardrails are arranged parallel to each other along the axial direction of the guardrail box, and the netting is an elastic net.

[0008] In the above technical solution, the guardrail box is provided with a cover hinged to both sides along the axial direction. The inner sides of the two covers are closed. At the bottom of each cover, there is a second automatic telescopic rod made of a first electric cylinder, with the cylinder body fixed to the inner wall of the bottom of the guardrail box. The piston rod of the second automatic telescopic rod is hinged to the bottom of the corresponding cover.

[0009] The above technical solution also includes a PLC (Programmable Logic Controller), whose control terminal is connected to the signal terminals of the motor and the first electric cylinder, respectively.

[0010] The present invention also provides an entrance / exit structure for an urban underground utility tunnel with a retractable guardrail mechanism, comprising an entrance / exit structure for the utility tunnel consisting of walls located below ground level, wherein the retractable guardrail mechanism is located at the underground entrance / exit of the utility tunnel.

[0011] In the above technical solution, the top of the wall is provided with a top cover with one end hinged to it, and the top cover is provided with a lifting mechanism to realize the closing of the top cover.

[0012] In the above technical solution, the lifting mechanism has support horizontal plates located on both sides of the wall and placed at the bottom of the top cover. Each support horizontal plate has a covering box coaxially arranged in the middle. Each covering box has a first automatic telescopic rod hinged to the side of the support horizontal plate through a pin. The top surface and the ground of the covering box are respectively provided with horizontal grooves adapted to the corresponding first automatic telescopic rods. A second electric cylinder is provided on the inner wall of the end of each covering box. The piston rod of the second electric cylinder is hinged to the end of the first automatic telescopic rod located below the pin. The length of the part of the first automatic telescopic rod above the pin is greater than the length of the part below the pin. The top of each covering box is nested with the corresponding cavity at the bottom of the top cover. The top of each first automatic telescopic rod abuts against the bottom surface of the top cover.

[0013] In the above technical solution, the top cover is provided with a grooved ash collection box on the outside of the two lifting mechanisms, and the bottom of the two ash collection boxes near the hinge point of the top cover is provided with a collection box connected to it.

[0014] In the above technical solution, the control terminal of the PLC is connected to the signal terminal of the second electric cylinder, a step is provided at the end of the wall away from the hinge point of the top cover, and the top surface of the top cover is covered with floor tiles.

[0015] The retractable guardrail mechanism and the entrance / exit structure of the urban underground utility tunnel incorporating the guardrail mechanism of the present invention have the following beneficial effects: This invention relates to an entrance / exit structure for an urban underground utility tunnel with a retractable guardrail mechanism, forming a guardrail to prevent pedestrians from entering the tunnel. During periods of use, the entrance / exit structure can be isolated from unauthorized personnel, and it facilitates the centralized disposal of sand and gravel that have fallen into the tunnel. Specifically: 1. A guardrail box is installed at the entrance when the cover is opened. The cover of the guardrail box is opened by lifting the second automatic telescopic rod. Guardrails are rotatably connected inside the guardrail box. A net is fixedly connected between the guardrails. The PLC controls the motor to rotate and erect the guardrails to form a barrier and prevent unauthorized personnel from entering the pipe gallery. 2. A top cover is rotatably connected to the top of the wall, and support plates are fixed on both sides of the wall. A first automatic telescopic rod is rotatably connected between the support plates and the top cover. The output end of the first automatic telescopic rod lifts the top cover under the drive of the second electric cylinder. The upper surface of the top cover is covered with floor tiles to facilitate hiding the entrance and exit when not in use. 3. Dust collection boxes are fixedly installed at the top between the front and rear ends of the wall. A collection box is slidably connected to the bottom of the rear end of the dust collection box. When the top cover is opened, sand and gravel will enter the pipe gallery, be caught by the dust collection box, and then collected into the collection box for centralized treatment, which makes it easy to clean up the sand and gravel that has fallen into the pipe gallery. Attached Figure Description

[0016] Figure 1 This is a front sectional view of the retractable guardrail mechanism of the present invention and the entrance / exit structure of an urban underground utility tunnel having the guardrail mechanism. Figure 2 This is a side sectional view of the retractable guardrail mechanism of the present invention and the entrance / exit structure of an urban underground utility tunnel having the guardrail mechanism. Figure 3 This is a top view of the retractable guardrail mechanism of the present invention and the entrance / exit structure of the urban underground integrated pipe gallery having the guardrail mechanism. Figure 4 for Figure 2 Enlarged view of the structure at point A in the middle. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, but these embodiments should not be construed as limiting the present invention.

[0018] Example 1 See Figures 1 to 3 The present invention provides an entrance and exit structure for an urban underground utility tunnel with a retractable guardrail mechanism, comprising an entrance and exit structure for the utility tunnel consisting of a wall 2 located below ground level 1, wherein the retractable guardrail mechanism is located at the underground entrance and exit of the utility tunnel.

[0019] The top of the wall 2 is provided with a top cover 3 that is hinged to it at one end. The top cover 3 is provided with a lifting mechanism to close the top cover 3. In this embodiment, the top surface of the top cover 3 is covered with floor tiles. When the top cover 3 is closed, the bottom surface of the top cover 3 is in contact with the top surface of the wall 2. The upper surface of the top cover 3 is covered with floor tiles. When the pipe gallery does not need to be opened, the entrance and exit can become a pedestrian walkway, on which pedestrians can walk.

[0020] The lifting mechanism has supporting horizontal plates 4 located on both sides of the wall 2 and at the bottom of the top cover 3. Each supporting horizontal plate 4 has a covering box 15 coaxially arranged in the middle. Each covering box 15 has a first automatic telescopic rod 5 hinged to the side of the supporting horizontal plate 4 via a pin. The top and bottom surfaces of the covering box 15 are respectively provided with horizontal grooves adapted to the corresponding first automatic telescopic rod 5. A second electric cylinder is provided on the inner wall of the end of each covering box 15. The piston rod of the second electric cylinder is hinged to the end of the first automatic telescopic rod 5 located below the pin. The length of the part of the first automatic telescopic rod 5 above the pin is greater than the length of the part below the pin. The top of each covering box 15 is nested with the corresponding cavity at the bottom of the top cover 3. The top of each first automatic telescopic rod 5 abuts against the bottom surface of the top cover 3. When the top of the first automatic telescopic rod 5 extends, the top cover 3 can be lifted, so that the top cover 3 opens the entrance of the pipe gallery with the hinge point on the wall 2 as the pivot. The top cover 3 is equipped with grooved dust collection boxes 6 on the outside of the two lifting mechanisms. Each of the two dust collection boxes 6 has a connected collection box 7 at its bottom near the hinge point of the top cover 3. When the top cover 3 is opened, sand and gravel on the ground 1 may enter the pipe gallery. The sand and gravel are first caught by the dust collection boxes 6 and collected into the collection boxes 7 under gravity. Then, the collection boxes 7 are removed from the dust collection boxes 6, and the sand and gravel inside are disposed of centrally.

[0021] The control terminal of the PLC is connected to the signal terminal of the second electric cylinder. A step 8 is provided at the end of the wall 2 away from the hinge point of the top cover 3. The step 8 is fixedly connected inside the wall 2, and one can enter from the entrance and descend to the bottom of the pipe gallery via the step 8.

[0022] Example 2 This embodiment is basically the same as Embodiment 1, except that: See Figure 4 The retractable guardrail mechanism of the present invention includes two fixed seats 14, each fixed seat 14 is provided with a guardrail 12 hinged to it, and a net 13 is provided between the two guardrails 12.

[0023] The fixed base 14 is connected to the guardrail 12 at the hinge shaft, where a motor with a power output end is connected.

[0024] The fixed base 14, guardrail 12, netting 13 and motor are all installed inside the guardrail box 9. The two fixed bases 14 are located at both ends of the guardrail box 9, the two guardrail 12 are arranged parallel to each other along the axial direction of the guardrail box 9, and the netting 13 is an elastic net.

[0025] The guardrail box 9 is provided with a cover 10 hinged to both sides along the axial direction. The inner sides of the two covers 10 are closed. Each cover 10 has a second automatic telescopic rod 11 made of a first electric cylinder at the bottom, which is fixed to the inner wall of the bottom of the guardrail box 9. The piston rod of the second automatic telescopic rod 11 is hinged to the bottom of the corresponding cover 10.

[0026] The retractable guardrail mechanism of the present invention also includes a PLC, the control terminal of which is connected to the signal terminals of the motor and the first electric cylinder respectively.

[0027] The entrance and exit of the integrated utility tunnel on ground level 1 are fixedly connected to guardrail boxes 9. Each guardrail box 9 has a cover 10 rotatably connected to its top along its length. Inside the guardrail box 9, at each of the four corners, there is a second automatic telescopic rod 11 hinged to it. The top of the piston rod of the second automatic telescopic rod 11 is connected to a pin at the bottom of the cover 10. The extension and retraction of the piston rod of the second automatic telescopic rod 11 can cause the cover 10 to open or close. Inside the guardrail box 9, at both ends, there are fixed seats 14 and guardrail bars 12 hinged to the corresponding fixed seats 14. Figure 4 As shown, a net 13 is connected between the inner sides of the two guardrails 12. The PLC controls the motor to drive the guardrail 12 to lift the other end and make it vertical. The net 13 automatically straightens. The two ends of the net 13 are fixedly connected to the inner sides of the two guardrails 12, which will form an obstacle at the open entrance of the utility tunnel to prevent unauthorized personnel from entering. The above completes a series of operations for the entrance and exit structure of the urban underground utility tunnel with a retractable guardrail mechanism.

[0028] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0029] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

[0030] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

Claims

1. A retractable guardrail mechanism, characterized in that: It includes two fixed seats (14), each fixed seat (14) is provided with a guardrail (12) hinged to it, and a net (13) is provided between the two guardrails (12).

2. The retractable guardrail mechanism according to claim 1, characterized in that: The fixed base (14) is connected to the guardrail (12) at the hinge shaft, where a motor with a power output end is connected.

3. The retractable guardrail mechanism according to claim 2, characterized in that: The fixed base (14), guardrail (12), net (13) and motor are all installed inside the guardrail box (9). The two fixed bases (14) are located at both ends of the guardrail box (9). The two guardrails (12) are arranged parallel to each other along the axial direction of the guardrail box (9). The net (13) is an elastic net.

4. The retractable guardrail mechanism according to claim 3, characterized in that: The guardrail box (9) is provided with a cover (10) hinged to both sides along the axial direction. The inner sides of the two covers (10) are closed. Each cover (10) has a second automatic telescopic rod (11) made of a first electric cylinder at the bottom, with the cylinder body fixed to the inner wall of the bottom of the guardrail box (9). The piston rod of the second automatic telescopic rod (11) is hinged to the bottom of the corresponding cover (10).

5. The retractable guardrail mechanism according to claim 4, characterized in that: It also includes a PLC, whose control terminal is connected to the signal terminals of the motor and the first electric cylinder, respectively.

6. An entrance / exit structure for an urban underground utility tunnel with a retractable guardrail mechanism as described in any one of claims 1 to 5, comprising an entrance / exit structure for the utility tunnel consisting of a wall (2) located below ground level (1), characterized in that: The retractable guardrail mechanism is located at the underground entrance / exit of the integrated utility tunnel.

7. The urban underground integrated utility tunnel entrance structure with a retractable guardrail mechanism according to claim 6, characterized in that: The top of the wall (2) is provided with a top cover (3) that is hinged to it at one end, and the top cover (3) is provided with a lifting mechanism to close the top cover (3).

8. The urban underground integrated utility tunnel entrance structure with a retractable guardrail mechanism according to claim 7, characterized in that: The lifting mechanism has support horizontal plates (4) located on both sides of the wall (2) and placed at the bottom of the top cover (3). Each support horizontal plate (4) has a cover box (15) arranged coaxially with it in the middle. Each cover box (15) has a first automatic telescopic rod (5) in the middle that is hinged to the side of the support horizontal plate (4) by a pin. The top surface and the ground surface of the cover box (15) are respectively provided with horizontal grooves that are adapted to the corresponding first automatic telescopic rod (5). The inner wall of the end of each cover box (15) is provided with a second electric cylinder. The piston rod of the second electric cylinder is hinged to the end of the first automatic telescopic rod (5) located below the pin. The length of the part of the first automatic telescopic rod (5) above the pin is greater than the length of the part below the pin. The top of each cover box (15) is nested with the cavity corresponding to the bottom of the top cover (3). The top of each first automatic telescopic rod (5) abuts against the bottom surface of the top cover (3).

9. The urban underground integrated utility tunnel entrance structure with a retractable guardrail mechanism according to claim 8, characterized in that: The top cover (3) is provided with grooved dust collection boxes (6) on the outside of the two lifting mechanisms. The bottom of the two dust collection boxes (6) near the hinge point of the top cover (3) is provided with collection boxes (7) connected to them.

10. The urban underground integrated utility tunnel entrance structure with a retractable guardrail mechanism according to claim 9, characterized in that: The control terminal of the PLC is connected to the signal terminal of the second electric cylinder. The wall (2) is provided with a step (8) at the end away from the hinge point of the top cover (3). The top surface of the top cover (3) is covered with floor tiles.

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