A well lid anti-settling fixing device

Abstract

The utility model provides a kind of well lid anti-settling fixing device.It relates to municipal engineering construction technical field.The well lid anti-settling fixing device includes well slot being opened on ground, annular supporting member is equipped in the well slot, the bottom of the annular supporting member is equipped with positioning ring groove, annular positioning protrusion is fixedly installed on the bottom inner wall of the well slot, the top of the annular positioning protrusion extends into the positioning ring groove, the well slot, annular supporting member and annular positioning protrusion constitute concrete filling cavity between;The top of the annular supporting member is equipped with installation ring groove, well lid main body is equipped in the installation ring groove, the top of the well lid main body is equipped with four first clamping slots being annular array distribution, the top of the annular supporting member is equipped with four second clamping slots being annular array distribution.The utility model has the advantages of simple structure, convenient installation, and stable and reliable anti-settling effect.

Description

Technical Field

[0001] This utility model relates to the field of municipal engineering construction technology, specifically to a manhole cover anti-settlement fixing device. Background Technology

[0002] Manhole covers, as an important component of infrastructure such as municipal roads and residential roads, are mainly used to cover underground pipe well openings to ensure the safety of pedestrians and vehicles. However, during long-term use, traditional manhole covers often experience settlement problems, which manifest as a height difference between the manhole cover and the surrounding road surface. When vehicles or pedestrians pass by, it is easy to cause bumps and abnormal noises, which not only affects the comfort of passage, but also accelerates the wear and tear of the manhole cover and the base, shortens the service life, and in severe cases, may even lead to the displacement and damage of the manhole cover, creating road safety hazards.

[0003] Analysis revealed the following main reasons for the settlement of traditional manhole covers: First, traditional manhole covers and bases often use a simple overlapping structure, lacking an effective fixing and limiting mechanism. Under the impact of repeated vehicle traffic, the manhole cover is prone to displacement, which in turn damages the surrounding road structure. Second, the backfill soil or concrete pouring layer around the manhole cover is prone to compaction and settlement under long-term loads, causing the manhole cover to sink relative to the road surface.

[0004] Therefore, it is necessary to provide a new manhole cover anti-settlement fixing device to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide a manhole cover anti-settlement fixing device that is simple in structure, easy to install, and has a stable and reliable anti-settlement effect.

[0006] To solve the above-mentioned technical problems, the manhole cover anti-settlement fixing device provided by this utility model includes: a manhole groove opened on the ground, an annular support member provided in the manhole groove, a positioning annular groove opened at the bottom of the annular support member, an annular positioning protrusion fixedly installed on the bottom inner wall of the manhole groove, the top of the annular positioning protrusion extending into the positioning annular groove, and a concrete filling cavity formed between the manhole groove, the annular support member and the annular positioning protrusion; an installation annular groove opened at the top of the annular support member, a manhole cover body provided in the installation annular groove, four first slots arranged in a circular array at the top of the manhole cover body, and four second slots arranged in a circular array at the top of the annular support member, the four first slots respectively matching the four second slots, and the same sheet metal connecting piece fixedly installed in the corresponding first slots and second slots by countersunk expansion bolts; the top end faces of the annular support member and the manhole cover body are flush with the ground surface.

[0007] Furthermore, four guide grooves arranged in a circular array are provided on the bottom inner wall of the mounting ring groove, and four embedded grooves arranged in a circular array are provided on the bottom of the manhole cover body. Guide clips are slidably installed in each of the four embedded grooves, and the bottom ends of the four guide clips extend into the four guide grooves respectively. Compression springs are fixedly installed on the top inner wall of each of the four embedded grooves, and the bottom ends of the four compression springs are fixedly connected to the four guide clips respectively.

[0008] Furthermore, the bottom ends of the four guide heads are all spherical, and the bottom ends of the four guide heads are respectively attached to the bottom inner walls of the four guide grooves.

[0009] Furthermore, a cover plate groove is provided on the top of the manhole cover body, and a cover plate is provided in the cover plate groove. The top end face of the cover plate is flush with the top end face of the manhole cover body, and an anti-falling grid is provided inside the manhole cover body.

[0010] Furthermore, a transition block is hinged to one side of the cover plate groove, and one side of the transition block is fixedly connected to the cover plate. A fixing plate is fixedly installed on the side of the cover plate away from the transition block, and the fixing plate is fixedly connected to the manhole cover body by countersunk bolts.

[0011] Furthermore, the concrete filling cavity is filled with concrete of strength grade C30 or higher.

[0012] Furthermore, the upper surface of the cover plate is provided with anti-slip texture.

[0013] Compared with related technologies, the manhole cover anti-settlement fixing device provided by this utility model has the following beneficial effects: I. This utility model uses a ring support component to precisely limit the positioning of the ring positioning protrusion and the positioning ring groove, combined with the curing and bonding of C30 concrete in the concrete filling cavity, to form an integrated rigid structure with the ground; and the main body of the manhole cover is rigidly fixed to the ring support component by sheet metal connecting pieces, so that the overall load is evenly distributed, there is no local stress concentration, and the problem of manhole cover settlement is basically eliminated. Second, this utility model first uses a guide head and guide groove to achieve the pre-positioning of the manhole cover body, so that the first groove and the second groove can be automatically aligned. Then, it uses sheet metal connecting pieces and countersunk expansion bolts to achieve quick fixation, simplifying the installation process and reducing the difficulty of operation. Third, in this utility model, the top end face of the annular support, the main body of the manhole cover and the cover plate are all flush with the ground, without any protrusions or depressions, which meets the requirements of road traffic for ground flatness and avoids bumps or obstructions when vehicles and pedestrians pass. Attached Figure Description

[0014] Figure 1 A schematic diagram of a preferred embodiment of the manhole cover anti-settlement fixing device provided by this utility model; Figure 2 This is a schematic diagram of the explosion state of this utility model; Figure 3 This is a schematic diagram of the front sectional planar structure of this utility model; Figure 4 for Figure 3 The enlarged schematic diagram of part A shown below; Figure 5 This is a schematic diagram of the guide groove in this utility model; Figure 6 This is a schematic diagram of the positioning ring groove in this utility model; Figure 7 This is a schematic diagram of the assembly of the manhole cover body and the guide clip in this utility model; Figure 8 This is a schematic diagram of the first slot in this utility model; Figure 9 This is a schematic diagram of the installation of the sheet metal connecting piece in this utility model.

[0015] The following are labeled in the diagram: 1. Ground; 2. Manhole trench; 3. Annular support; 4. Positioning ring groove; 5. Annular positioning protrusion; 6. Concrete filling cavity; 7. Installation ring groove; 8. Manhole cover body; 9. Guide groove; 10. Embedded groove; 11. Guide clip; 12. Compression spring; 13. Cover plate groove; 14. Cover plate; 15. Anti-falling grating; 16. First slot; 17. Second slot; 18. Sheet metal connecting piece. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Please refer to the following: Figures 1-9 .

[0018] The manhole cover anti-settlement fixing device includes: a manhole groove 2 opened on the ground 1, and an annular support 3 provided in the manhole groove 2, with a positioning annular groove 4 opened at the bottom of the annular support 3. An annular positioning protrusion 5 is fixedly installed on the bottom inner wall of the manhole groove 2, and the top of the annular positioning protrusion 5 extends into the positioning annular groove 4, forming a preliminary positioning effect. The manhole groove 2, the annular support 3, and the annular positioning protrusion 5 naturally form a concrete filling cavity 6. By pouring C30 concrete into the concrete filling cavity 6, the annular support 3 is firmly fixed in the manhole groove 2. The top of the annular support 3 has an installation annular groove 7, which contains a... The manhole cover body 8 has four first slots 16 arranged in a circular array on its top, and the annular support member 3 has four second slots 17 arranged in a circular array on its top. The four first slots 16 are respectively adapted to the four second slots 17, and the same sheet metal connecting piece 18 is fixedly installed in the corresponding first slots 16 and second slots 17 by countersunk expansion bolts. The countersunk expansion bolts fix the manhole cover body 8 and the annular support member 3 to form a "locking" effect, which further improves the anti-settlement and anti-displacement effect. The top surfaces of the annular support member 3 and the manhole cover body 8 are flush with the ground surface 1.

[0019] In this embodiment, in order to quickly align the first slot 16 and the second slot 17 and prevent misalignment during installation, four guide slots 9 arranged in a circular array are provided on the bottom inner wall of the mounting ring groove 7, and four embedded slots 10 arranged in a circular array are provided on the bottom of the manhole cover body 8. Guide heads 11 are slidably installed in each of the four embedded slots 10, with the bottom ends of the four guide heads 11 extending into the four guide slots 9 respectively. Compression springs 12 are fixedly installed on the top inner wall of each of the four embedded slots 10. The bottom end of each compression spring 12 is fixedly connected to the four guide clips 11. When installing the manhole cover body 8, the guide clips 11 can be automatically inserted into the guide grooves 9 by simply rotating them, thereby quickly aligning the first groove 16 and the second groove 17, which facilitates subsequent installation. In addition, the bottom ends of the four guide clips 11 are all spherical, and the bottom ends of the four guide clips 11 are respectively attached to the bottom inner wall of the four guide grooves 9, ensuring that the guide clips 11 can be smoothly inserted into the guide grooves 9 and avoiding jamming.

[0020] In this embodiment, to facilitate subsequent inspection and maintenance of the well, a cover plate groove 13 is provided on the top of the well cover body 8, and a cover plate 14 is provided in the cover plate groove 13. The top end face of the cover plate 14 is flush with the top end face of the well cover body 8. An anti-fall grid 15 is provided in the well cover body 8. In addition, to improve the anti-slip effect, anti-slip texture is provided on the upper surface of the cover plate 14. Furthermore, a transition block is hinged to one side of the cover plate groove 13, and one side of the transition block is fixedly connected to the cover plate 14. A fixing plate is fixedly installed on the side of the cover plate 14 away from the transition block. The fixing plate is fixedly connected to the well cover body 8 by countersunk bolts.

[0021] The manhole cover anti-settlement fixing device provided by this utility model is installed as follows: First, the annular support 3 is lowered into the well 2, so that the annular positioning protrusion 5 is embedded in the positioning ring groove 4. At this time, the well 2, the annular support 3 and the annular positioning protrusion 5 naturally form a closed concrete filling cavity 6. Then, C30 concrete is poured into the concrete filling cavity 6. After the concrete is completely cured, it will firmly "bond" the annular support 3 with the well 2 and the annular positioning protrusion 5 into one piece. At this point, the ring support 3 no longer relies solely on the fitting of the positioning ring groove 4, but forms a rigid connection with the ground 1 through concrete, completely eliminating the sinking and tilting problems of the ring support 3 due to long-term load, while further dispersing the load to a larger area of ​​the ground structure. Then, the manhole cover body 8 is lowered into the installation ring groove 7. Initially, the four guide clips 11 are not yet aligned with their respective guide grooves 9, but will first fit against the bottom inner wall of the installation ring groove 7. At the same time, the four compression springs 12 will retract with the corresponding guide clips 11. Then, the manhole cover body 8 is rotated. When the four guide clips 11 are rotated to be aligned with their respective guide grooves 9, the retracted compression springs 12 release their elasticity and automatically bring the four guide clips 11 into their respective guide grooves 9, thus achieving the initial installation of the manhole cover body 8. At this time, the four first slots 16 correspond to the four second slots 17 respectively. Then, the sheet metal connecting piece 18 is fixed in the first slot 16 and the second slot 17 by countersunk expansion bolts. The expansion of the expansion bolts will make the sheet metal connecting piece 18 rigidly connected with the inner wall of the slot, the manhole cover body 8, and the annular support 3. At this time, the manhole cover body 8 and the annular support 3 are completely "locked" and there is no relative displacement space between them, ensuring that the manhole cover body 8 will not loosen or shift due to vehicle running or vibration. At the same time, the countersunk design can prevent the bolt head from protruding and affecting the flatness of the ground. During subsequent maintenance, the cover plate 14 can be opened by removing the countersunk bolts without having to pry up the entire cover body 8, thus improving maintenance convenience. In addition, the anti-fall grid 15 inside the cover body 8 can prevent people and objects from accidentally falling into the well, forming a safety barrier to avoid accidents. Furthermore, the upper surface of the cover plate 14 is provided with anti-slip texture, which can increase the friction of the contact surface and prevent pedestrians or vehicles from slipping due to wet road conditions, thus improving safety.

[0022] Compared with related technologies, the manhole cover anti-settlement fixing device provided by this utility model has the following beneficial effects: I. This utility model uses the annular support 3 to precisely limit the positioning of the annular positioning protrusion 5 and the positioning ring groove 4, and combines the curing and bonding of C30 concrete in the concrete filling cavity 6 to form an integrated rigid structure with the ground 1; and the main body of the manhole cover 8 is rigidly fixed to the annular support 3 by the sheet metal connecting piece 18, so that the overall load is evenly distributed, there is no local stress concentration, and the problem of manhole cover settlement is basically eliminated. Second, this utility model first achieves the pre-positioning of the manhole cover body 8 through the guide card head 11 and guide groove 9, so that the first card groove 16 and the second card groove 17 can be automatically aligned. Then, the sheet metal connecting piece 18 and countersunk expansion bolts are used to achieve quick fixation, simplifying the installation process and reducing the difficulty of operation. Third, in this utility model, the top end face of the annular support 3, the manhole cover body 8 and the cover plate 14 are all flush with the ground 1, without any protrusions or depressions, which meets the requirements of road traffic for ground flatness and avoids bumps or obstructions when vehicles and pedestrians pass.

[0023] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A manhole cover anti-settlement fixing device, comprising a manhole trench carved into the ground, characterized in that, The well trench is provided with an annular support member, the bottom of which is provided with a positioning annular groove. An annular positioning protrusion is fixedly installed on the bottom inner wall of the well trench, and the top of the annular positioning protrusion extends into the positioning annular groove. The well trench, the annular support member and the annular positioning protrusion form a concrete filling cavity. The top of the annular support member is provided with an installation ring groove, and the manhole cover body is provided in the installation ring groove. The top of the manhole cover body is provided with four first slots arranged in a ring array, and the top of the annular support member is provided with four second slots arranged in a ring array. The four first slots are respectively adapted to the four second slots, and the same sheet metal connecting piece is fixedly installed in the corresponding first slots and second slots by countersunk expansion bolts. The top surfaces of both the annular support and the manhole cover are flush with the ground surface.

2. The manhole cover anti-settlement fixing device according to claim 1, characterized in that, The bottom inner wall of the mounting groove has four guide grooves arranged in a ring array. The bottom of the manhole cover body has four embedded grooves arranged in a ring array. Guide clips are slidably installed in each of the four embedded grooves. The bottom ends of the four guide clips extend into the four guide grooves respectively. Compression springs are fixedly installed on the top inner wall of each of the four embedded grooves. The bottom ends of the four compression springs are fixedly connected to the four guide clips respectively.

3. The manhole cover anti-settlement fixing device according to claim 2, characterized in that, The bottom ends of the four guide heads are all spherical, and the bottom ends of the four guide heads are respectively attached to the bottom inner walls of the four guide grooves.

4. The manhole cover anti-settlement fixing device according to claim 1, characterized in that, The top of the manhole cover body is provided with a cover plate groove, and a cover plate is provided in the cover plate groove. The top end face of the cover plate is flush with the top end face of the manhole cover body. The manhole cover body is provided with an anti-falling grid.

5. The manhole cover anti-settlement fixing device according to claim 4, characterized in that, A transition block is hinged to one side of the cover plate groove. One side of the transition block is fixedly connected to the cover plate. A fixing plate is fixedly installed on the side of the cover plate away from the transition block. The fixing plate is fixedly connected to the manhole cover body by countersunk bolts.

6. The manhole cover anti-settlement fixing device according to claim 1, characterized in that, The concrete filling cavity is filled with concrete of strength grade C30 or above.

7. The manhole cover anti-settlement fixing device according to claim 4, characterized in that, The upper surface of the cover plate is provided with anti-slip texture.

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