Well lid automatic alarm device

Abstract

The utility model relates to an automatic well lid alarm device which comprises a well lid frame, a rotating cavity is formed in the side wall of the well lid frame, a rotating block is arranged in the rotating cavity, one end of the rotating block is fixedly connected with a well lid body, a cross-shaped sliding groove is formed in the well lid body, and a cross-shaped mounting box is arranged in the cross-shaped sliding groove in a sliding mode. An alarm structure is arranged in the cross-shaped mounting box, and a sliding cavity is formed in the center of the bottom end of the cross-shaped mounting box. The utility model relates to the technical field of municipal well lids. According to the automatic alarm device for the well lid, the bearing support and the cross-shaped sliding groove are used for installing the cross-shaped installation box, the cross-shaped installation box is jacked upwards through the pressure relief spring, the top end of the cross-shaped installation box is made to be close to the upper surface of the well lid body, and when the cross-shaped installation box is impacted by an automobile or other objects, the cross-shaped installation box is not damaged. The impact force borne by the cross-shaped mounting box is relieved through the pressure relief spring, and then the purpose of protecting the alarm structure in the cross-shaped mounting box is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of municipal manhole covers, in particular to an automatic alarm device for manhole covers. Background Art

[0002] Manhole covers are used to cover deep wells on roads or in homes to prevent people or objects from falling. According to the material, they can be divided into metal manhole covers, high-strength fiber cement concrete manhole covers, resin manhole covers, etc. They can be used in green belts, sidewalks, motorway lanes, docks, alleys, etc.

[0003] In order to ensure the strength of the manhole covers on motor vehicle lanes and sidewalks, most of the manhole covers used on motor vehicle lanes and sidewalks are made of metal, which has a high value, and there will be problems with theft of manhole covers;

[0004] Therefore, in the prior art, most manhole covers have an automatic alarm function, and are provided with an antenna connected to a receiver signal so that the alarm device can promptly notify the relevant municipal departments through the network when an alarm is sounded;

[0005] Chinese patent publication number CN208056115U discloses a manhole cover structure with an antenna, comprising: a manhole cover, the manhole cover having an antenna hole; an antenna fixing seat, the antenna fixing seat being arranged on the lower surface of the manhole cover; an antenna body, the antenna body being fixed on the antenna fixing seat, and the head of the antenna body being inserted into the antenna hole of the manhole cover. The utility model solves the problem of poor penetration of the traditional manhole cover antenna by arranging the antenna hole on the manhole cover and installing the antenna body through the antenna fixing seat so that the head of the antenna body is inserted into the antenna hole.

[0006] In the above patent, the protective cap is fixedly connected to the manhole cover body. In actual use, the weight of a vehicle passing by will press on the top of the protective cap, which may cause the antenna hole for installing the antenna body to bear higher pressure, thereby easily causing damage to the antenna. Utility Model Content

[0007] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an automatic manhole cover alarm device so as to solve the technical problems mentioned in the above background technology.

[0008] The above technical objectives of the utility model are achieved through the following technical solutions:

[0009] An automatic alarm device for a manhole cover comprises a manhole cover frame, a rotating cavity is arranged on the side wall of the manhole cover frame, a rotating block is arranged inside the rotating cavity, one end of the rotating block is fixedly connected to a manhole cover body, a cross slide groove is arranged inside the manhole cover body, a cross installation box is slidably arranged inside the cross slide groove, an alarm structure is arranged inside the cross installation box, a sliding cavity is arranged at the center of the bottom end of the cross installation box, and a supporting bracket is arranged at the bottom end of the manhole cover body;

[0010] The supporting bracket comprises four mounting rods, and the bottom ends of the mounting rods are commonly connected with guide rods, the outer peripheral walls of the guide rods are provided with pressure relief springs, and the top ends of the pressure relief springs are in contact with the cross mounting box.

[0011] Furthermore, a connecting hole is provided at the bottom end of the guide rod, a sliding sealing ring is provided at the top end of the guide rod, and the top end of the guide rod is inserted into the interior of the sliding cavity.

[0012] Furthermore, the inner groove wall of the cross slide is in contact with the outer wall of the cross mounting box and is slidably connected thereto, and an expansion groove is provided at the bottom end of the inner groove wall of the cross slide.

[0013] Furthermore, a protruding cavity is provided at the top of the cross mounting box, the protruding cavity is communicated with the sliding cavity, and a plurality of exhaust holes are provided on the outer peripheral wall of the protruding cavity.

[0014] Furthermore, the alarm structure includes an alarm controller, a side wall of the alarm controller is connected to an alarm antenna via a wire, a sound-generating component is provided at the end of the cross mounting box, and the sound-generating component is connected to the alarm controller via a wire.

[0015] Furthermore, a limiting platform is arranged inside the manhole cover frame, and a sliding groove is arranged inside the limiting platform at a position corresponding to the cross mounting box.

[0016] In summary, the present invention includes at least one of the following beneficial technical effects:

[0017] 1. This automatic alarm device for a manhole cover is used to install a cross installation box through a supporting bracket and a cross slide, and the cross installation box is pushed up by a pressure relief spring so that the top of the cross installation box is close to the upper surface of the manhole cover body. When the cross installation box is hit by a car or other objects, the pressure relief spring is used to relieve the impact force on the cross installation box, thereby protecting the alarm structure inside the cross installation box;

[0018] 2. In this automatic alarm device for a manhole cover, when the cross-mounting box is impacted and moves downward, the air inside the sliding cavity is discharged through the connecting hole. When the top of the cross-mounting box is not subjected to force, the pressure relief spring pushes the cross-mounting box upward. At this time, the air enters the sliding cavity through the connecting hole. Since the aperture of the connecting hole is small, the speed at which the air enters the sliding cavity is low, thereby causing the cross-mounting box to move upward slowly, thereby increasing the resistance of the cross-mounting box when it moves, thereby protecting the cross-mounting box and preventing it from bouncing up too quickly, which may cause damage to the cross-mounting box.

[0019] 3. This kind of manhole cover automatic alarm device, through the setting of the exhaust hole, when the cross installation box moves downward, it will compress the air inside the sliding cavity, so that the air is discharged through the connecting hole and the exhaust hole. Since the position of the exhaust hole corresponds to the four support rods of the cross installation box, the upper surface wall of the cross installation box can be impacted when the air is discharged, so as to achieve the effect of cleaning the dust or other foreign matter on the surface of the cross installation box. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 The utility model is a structural schematic diagram of an automatic alarm device for a manhole cover.

[0022] Figure 2 The utility model is a schematic structural diagram of a manhole cover frame of an automatic manhole cover alarm device.

[0023] Figure 3 The utility model is a schematic structural diagram of a cross installation box and a supporting bracket of an automatic alarm device for a manhole cover.

[0024] Figure 4 The utility model is a schematic structural diagram of a manhole cover body of an automatic manhole cover alarm device.

[0025] In the figure, 1. manhole cover frame; 2. rotating cavity; 3. rotating block; 4. manhole cover body; 5. cross slide groove; 51. expansion groove; 6. cross mounting box; 61. protruding cavity; 62. exhaust hole; 7. alarm structure; 71. alarm controller; 72. alarm antenna; 73. sounding component; 8. sliding cavity; 9. supporting bracket; 91. mounting rod; 92. guide rod; 93. pressure relief spring; 94. connecting hole; 10. limit table; 11. sliding groove. DETAILED DESCRIPTION

[0026] The utility model is further described in detail with reference to the accompanying drawings.

[0027] Example: Refer to Figure 1 - Figure 4 The utility model discloses an automatic alarm device for a manhole cover, comprising a manhole cover frame 1, a rotating cavity 2 is arranged on the side wall of the manhole cover frame 1, a rotating block 3 is arranged inside the rotating cavity 2, one end of the rotating block 3 is fixedly connected to a manhole cover body 4, a cross slide 5 is arranged inside the manhole cover body 4, a cross installation box 6 is slidably arranged inside the cross slide 5, an alarm structure 7 is arranged inside the cross installation box 6, a sliding cavity 8 is arranged at the center of the bottom end of the cross installation box 6, and a supporting bracket 9 is arranged at the bottom end of the manhole cover body 4;

[0028] The supporting bracket 9 includes four mounting rods 91 , and the bottom ends of the mounting rods 91 are commonly connected to a guide rod 92 , and a pressure relief spring 93 is provided on the outer peripheral wall of the guide rod 92 , and the top end of the pressure relief spring 93 is in contact with the cross mounting box 6 .

[0029] In this embodiment, the manhole cover frame 1, the rotating chamber 2 and the rotating block 3 are provided to rotatably connect the manhole cover body 4 and the manhole cover frame 1, and the supporting bracket 9 and the cross slide groove 5 are used to install the cross mounting box 6, and the cross mounting box 6 is pushed upward by the pressure relief spring 93 so that the top of the cross mounting box 6 is close to the upper surface of the manhole cover body 4. When the cross mounting box 6 is hit by a car or other objects, the impact force on the cross mounting box 6 is relieved by the pressure relief spring 93, thereby protecting the alarm structure 7 inside the cross mounting box 6.

[0030] In a further preferred embodiment of the present invention, Figure 1-4 As shown, a connecting hole 94 is provided at the bottom end of the guide rod 92 , a sliding sealing ring is provided at the top end of the guide rod 92 , and the top end of the guide rod 92 is inserted into the interior of the sliding cavity 8 .

[0031] In this embodiment, Figure 3 As shown, by setting the sliding sealing ring, the guide rod 92 and the sliding chamber 8 form a piston connection, and the sliding chamber 8 is connected to the outside through the connecting hole 94. When the cross mounting box 6 moves downward due to the impact force, the air inside the sliding chamber 8 is discharged through the connecting hole. When the top of the cross mounting box 6 is not under force, the pressure relief spring 93 pushes the cross mounting box 6 upward. At this time, the air will enter the sliding chamber 8 through the connecting hole 94. Since the aperture of the connecting hole 94 is small, the speed at which the air enters the sliding chamber 8 is low, thereby causing the cross mounting box 6 to move slowly upward, thereby increasing the resistance of the cross mounting box 6 when it moves, so as to protect the cross mounting box 6 and prevent it from bouncing up too quickly, which may cause damage to the cross mounting box 6.

[0032] In a further preferred embodiment of the present invention, Figure 1-4 As shown, the inner groove wall of the cross slide 5 is in contact with the outer wall of the cross mounting box 6 and is slidably connected, and an expansion groove 51 is provided at the bottom end of the inner groove wall of the cross slide 5 .

[0033] In this embodiment, Figure 4 By setting the expansion groove 51, when the top wall of the cross mounting box 6 slides to the position of the expansion groove 51, there is a gap between the outer wall of the cross mounting box 6 and the expansion groove 51, which can effectively discharge the dust on the surface of the cross mounting box 6 through the gap to avoid the situation where there is a lot of dust on the top wall of the cross mounting box 6, which affects the operation of the alarm structure 7.

[0034] In a further preferred embodiment of the present invention, Figure 1-4 As shown, a protruding cavity 61 is provided at the top of the cross mounting box 6 , the protruding cavity 61 is communicated with the sliding cavity 8 , and a plurality of exhaust holes 62 are provided on the outer peripheral wall of the protruding cavity 61 .

[0035] In this embodiment, by setting the exhaust hole 62, when the cross mounting box 6 moves downward, the air inside the sliding cavity 8 is compressed, so that the air is discharged through the connecting hole 94 and the exhaust hole 62. Figure 4 As shown, since the position of the exhaust hole 62 corresponds to the four support rods of the cross mounting box 6, when the air is discharged, it can impact the upper surface wall of the cross mounting box 6 to achieve the effect of cleaning the dust or other foreign matter on the surface of the cross mounting box 6.

[0036] In a further preferred embodiment of the present invention, Figure 1-4 As shown, the alarm structure 7 includes an alarm controller 71, the side wall of the alarm controller 71 is connected to an alarm antenna 72 via a wire, a sound component 73 is provided at the end of the cross mounting box 6, and the sound component 73 is connected to the alarm controller 71 via a wire.

[0037] In this embodiment, the alarm controller 71 is interconnected with the manhole cover frame 1. The alarm controller 71 needs to be unlocked before opening the manhole cover body 4. Otherwise, the alarm controller 71 will generate an alarm through the sound component 73 and transmit the alarm signal to the corresponding municipal department through the alarm antenna 72.

[0038] In a further preferred embodiment of the present invention, Figure 1-4 As shown, a limiting platform 10 is arranged inside the manhole cover frame 1 , and a sliding groove 11 is arranged inside the limiting platform 10 at a position corresponding to the cross mounting box 6 .

[0039] In this embodiment, Figure 2As shown, the limit platform 10 is used to position the manhole cover body 4, and the position of the sliding groove 11 corresponds to the position of the cross mounting box 6, and the moving trajectory of the cross mounting box 6 is guided by the sliding groove 11.

[0040] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A manhole cover automatic alarm device, characterized in that: The invention comprises a manhole cover frame (1), wherein a rotating cavity (2) is arranged on a side wall of the manhole cover frame (1), a rotating block (3) is arranged inside the rotating cavity (2), one end of the rotating block (3) is fixedly connected to a manhole cover body (4), a cross slide groove (5) is arranged inside the manhole cover body (4), a cross installation box (6) is slidably arranged inside the cross slide groove (5), an alarm structure (7) is arranged inside the cross installation box (6), a sliding cavity (8) is arranged at the center of the bottom end of the cross installation box (6), and a supporting bracket (9) is arranged at the bottom end of the manhole cover body (4); The supporting bracket (9) comprises four mounting rods (91), and the bottom ends of the mounting rods (91) are commonly connected to a guide rod (92), and the outer peripheral wall of the guide rod (92) is provided with a pressure relief spring (93), and the top end of the pressure relief spring (93) is in contact with the cross mounting box (6).

2. The automatic manhole cover alarm device according to claim 1, characterized in that: A connecting hole (94) is provided at the bottom end of the guide rod (92), a sliding sealing ring is provided at the top end of the guide rod (92), and the top end of the guide rod (92) is inserted into the interior of the sliding cavity (8).

3. The automatic manhole cover alarm device according to claim 2, characterized in that: The inner groove wall of the cross slide groove (5) is in contact with the outer wall of the cross mounting box (6) and is slidably connected thereto. An expansion groove (51) is provided at the bottom end of the inner groove wall of the cross slide groove (5).

4. The automatic manhole cover alarm device according to claim 3 is characterized in that: A protruding cavity (61) is provided at the top end of the cross mounting box (6), the protruding cavity (61) and the sliding cavity (8) are communicated with each other, and a plurality of exhaust holes (62) are provided on the outer peripheral wall of the protruding cavity (61).

5. The automatic manhole cover alarm device according to claim 4, characterized in that: The alarm structure (7) comprises an alarm controller (71), a side wall of the alarm controller (71) is connected to an alarm antenna (72) via a wire, a sounding component (73) is provided at the end of the cross installation box (6), and the sounding component (73) is connected to the alarm controller (71) via a wire.

6. The automatic manhole cover alarm device according to claim 5, characterized in that: A limiting platform (10) is arranged inside the manhole cover frame (1), and a sliding groove (11) is arranged inside the limiting platform (10) at a position corresponding to the cross installation box (6).

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