A snap-on well lid for easy installation

Abstract

This utility model discloses a snap-on manhole cover that is easy to install, including a manhole cover body and a manhole base. The inner wall of the socket of the manhole base is provided with a snap-on unit, and the lower part of the side wall of the manhole cover body is provided with a snap-fit ​​part that cooperates with the snap-on unit. Both sides of the snap-on unit are provided with elastically retractable anti-rotation blocks. The inner side of the anti-rotation block is provided with a groove, and a pin is fixedly connected to the anti-rotation block within the groove. An abutment block is rotatably sleeved on the pin, and a torsion spring is sleeved on the pin. One end of the torsion spring is fixedly connected to the pin, and the other end is fixedly connected to the abutment block. Under the action of the torsion spring, the abutment block forms a side abutment against the snap-fit ​​part. This utility model achieves rapid guidance and automatic alignment of the manhole cover through the sliding cooperation between the guide slope of the snap-on unit and the snap-fit ​​part, significantly reducing the difficulty and time of installation, and effectively solving the alignment problem of repeated rotation and adjustment required during the installation of traditional manhole covers.

Description

Technical Field

[0001] This utility model relates to the technical field of manhole covers, specifically a snap-on manhole cover that is easy to install. Background Technology

[0002] In municipal engineering, property management and various underground pipeline facilities, manhole covers are essential safety protection components. Traditional manhole covers mostly adopt a socket or flat structure, which is fixed by the load-bearing contact surface between the manhole cover body and the manhole seat and a simple anti-displacement structure, such as the cooperation between the protrusions on the edge of the manhole cover and the grooves of the manhole seat.

[0003] In the existing technology, the installation and fixing methods of manhole covers mainly have the following problems: especially for round heavy manhole covers, workers need to accurately align the notch or slot on the manhole seat during installation and repeatedly rotate and adjust the angle. The process is time-consuming and laborious, and this problem is particularly prominent in narrow or poorly lit working environments. Most manhole covers rely on their own weight to be pressed against the manhole seat, but under the vibration and impact generated by the frequent rolling of heavy vehicles, small circumferential or radial displacements can easily occur between the manhole cover and the manhole seat. Long-term accumulation of displacement will cause the manhole cover and the manhole seat to collide and generate noise. Utility Model Content

[0004] The purpose of this utility model is to provide a snap-on manhole cover that is easy to install, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a snap-on manhole cover that is easy to install, comprising a manhole cover body and a manhole base, wherein a snap-on unit is provided on the inner wall of the socket of the manhole base, and a snap-on part that cooperates with the snap-on unit is provided on the lower part of the side wall of the manhole cover body, and elastically retractable anti-rotation blocks are provided on both sides of the snap-on unit. The anti-rotation block has a groove on its inner side. A pin is fixedly connected to the anti-rotation block in the groove. An abutment block is rotatably sleeved on the pin. A torsion spring is sleeved on the pin. One end of the torsion spring is fixedly connected to the pin, and the other end is fixedly connected to the abutment block. The abutment block forms a side abutment against the locking part under the action of the torsion spring.

[0006] Preferably, the snap-fit ​​unit includes a guide slope, and the slope of the snap-fit ​​portion and the guide slope form a sliding fit structure.

[0007] Preferably, a rubber layer is provided on the end surface of the abutment block.

[0008] Preferably, the upper surface edge of the manhole cover body is engraved with a first marking groove, and the upper surface edge of the manhole seat is correspondingly engraved with a second marking groove, with the first marking groove and the second marking groove being set accordingly.

[0009] Preferably, the depth of the groove is greater than the thickness of the anti-rotation block.

[0010] Preferably, the width of the snap-fit ​​portion is less than the distance between the two anti-rotation blocks.

[0011] Preferably, the anti-rotation block and the buckle unit are integrally formed.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model achieves rapid guidance and automatic alignment of the manhole cover through the sliding cooperation between the guide slope of the snap-fit ​​unit and the snap-fit ​​part, which significantly reduces the difficulty and time of installation and effectively solves the alignment problem that traditional manhole covers require repeated rotation and adjustment during installation.

[0013] 2. This utility model provides an anti-rotation mechanism driven by torsion springs and elastically extendable on both sides of the buckle unit. This mechanism can continuously and elastically clamp the buckle part from both sides, dynamically eliminate the fit gap, effectively suppress the circumferential and radial displacement caused by vehicle rolling vibration, and solve the problem of impact noise caused by long-term micro-motion accumulation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the snap-on manhole cover of this utility model.

[0015] Figure 2 This is a schematic diagram of the structure of the well base of this utility model.

[0016] Figure 3 This is a schematic diagram of the structure of the manhole cover body of this utility model.

[0017] Figure 4 This is a schematic diagram of the structure of the buckle unit and the snap-fit ​​part of this utility model.

[0018] Figure 5 This is a schematic diagram of the elastic abutment structure of this utility model.

[0019] In the diagram: 1-Manhole cover body; 2-Manhole seat; 3-Snap-on unit; 31-Guide slope; 4-Snap-on part; 5-Anti-rotation block; 51-Groove; 52-Pin; 53-Torsion spring; 54-Abutting block; 55-Rubber layer; 6-First marking groove; 7-Second marking groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1 The present invention provides a technical solution: the present invention provides a snap-on manhole cover that is easy to install, which mainly includes a manhole cover body 1 and a manhole base 2. The inner wall of the socket of the manhole base 2 is provided with a snap-on unit 3. The lower part of the side wall of the manhole cover body 1 is provided with a snap-on part 4 that cooperates with the snap-on unit 3. The snap-on unit 3 includes a guide slope 31, and the snap-on part 4 is provided with a corresponding cooperating slope.

[0022] During installation, the inclined surface of the snap-fit ​​part 4 and the guide inclined surface 31 form a sliding fit structure. With the guidance of the inclined surface, when the manhole cover body 1 is placed into the manhole seat 2, it can automatically slide to the correct installation position under the action of gravity without precise alignment, which greatly reduces the installation difficulty and effectively solves the problems of precise alignment and repeated rotation adjustment.

[0023] Both sides of the buckle unit 3 are provided with elastically retractable anti-rotation blocks 5. The anti-rotation blocks 5 and the buckle unit 3 are preferably integrally formed to ensure overall strength. The inner side of the anti-rotation block 5, that is, the side facing the buckle unit 3, is provided with a groove 51. The pin 52 is fixedly connected in the groove 51. The abutment block 54 is rotatably sleeved on the pin 52 through the through hole in its middle, so that the abutment block 54 can rotate around the pin 52.

[0024] The depth of the groove 51 is designed to be greater than the thickness of the anti-rotation block 5, so that the abutment block 54 can be accommodated in the groove 51. The torsion spring 53 is sleeved on the pin 52, with one end fixedly connected to the pin 52 and the other end fixedly connected to the abutment block 54. Under the preload of the torsion spring 53, the abutment block 54 has a tendency to rotate and move closer to the latching unit 3.

[0025] When the manhole cover body 1 is installed in place and its locking part 4 is located on the snap-fit ​​unit 3, the width of the locking part 4 is less than the distance between the two anti-rotation blocks 5, providing sufficient space for the inclined surface of the locking part 4 and the guide inclined surface 31 to cooperate when the manhole cover body 1 is placed into the manhole seat 2. At this time, under the action of the torsion spring 53, the ends of the two abutting blocks 54 simultaneously and tightly abut against the sides of the locking part 4 from both sides.

[0026] The elastic abutment structure forms a dynamic clamping force, which can effectively suppress and absorb the small circumferential and radial impacts caused by vehicle rolling vibration. When the manhole cover tends to rotate, the abutment block 54 continuously abuts against the locking part 4 through its elastic support, reducing the activity gap between the manhole cover and the manhole seat, thereby solving the problem of impact noise caused by long-term displacement accumulation.

[0027] To further enhance the vibration damping and noise reduction effect, a rubber layer 55 is provided on the end surface of the abutment block 54. The rubber layer 55 directly contacts the side of the snap-fit ​​part 4. Through the damping characteristics of the rubber material, it further absorbs vibration energy and increases friction, thereby improving the anti-rotation effect.

[0028] To facilitate installation and positioning, this utility model also includes an alignment marking mechanism. The upper surface edge of the manhole cover body 1 is engraved with a first marking groove 6, and the upper surface edge of the manhole seat 2 is correspondingly engraved with a second marking groove 7. During installation, the worker only needs to rotate the manhole cover body 1 to align the first marking groove 6 with the second marking groove 7, which ensures that the snap-fit ​​part 4 on the manhole cover body 1 is aligned with the snap-fit ​​unit 3 on the manhole seat 2, achieving rapid visual positioning and further improving installation efficiency, especially in low-light environments.

[0029] During installation, the operator aligns the first marking groove 6 and the second marking groove 7 to initially position the manhole cover body 1 and then places it into the manhole base 2. The locking part 4 slides down the guide slope 31 of the locking unit 3, automatically guides and locks into the final position. During this process, the locking part 4 will slightly open the abutment blocks 54 on both sides. After installation, the abutment blocks 54 quickly reset under the action of the torsion spring 53 and elastically clamp the locking part 4 from both sides.

[0030] When a vehicle passes by, the vertical load is borne by the buckle unit 3 and the snap-fit ​​part 4, while the horizontal vibration and torque are offset by the elastic abutment of the anti-rotation mechanism, thereby achieving the effect of noise reduction and stable use.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A snap-on manhole cover that is easy to install, comprising a manhole cover body (1) and a manhole base (2), characterized in that: The inner wall of the well seat (2) is provided with a snap-fit ​​unit (3), and the lower part of the side wall of the well cover body (1) is provided with a snap-fit ​​part (4) that cooperates with the snap-fit ​​unit (3). Both sides of the snap-fit ​​unit (3) are provided with elastically retractable anti-rotation blocks (5). The anti-rotation block (5) has a groove (51) on its inner side. A pin (52) is fixedly connected to the anti-rotation block (5) in the groove (51). An abutment block (54) is rotatably sleeved on the pin (52). A torsion spring (53) is sleeved on the pin (52). One end of the torsion spring (53) is fixedly connected to the pin (52), and the other end is fixedly connected to the abutment block (54). The abutment block (54) forms a side abutment against the snap-fit ​​part (4) under the action of the torsion spring (53).

2. The snap-on manhole cover for easy installation according to claim 1, characterized in that: The snap-fit ​​unit (3) includes a guide slope (31), and the slope of the snap-fit ​​part (4) and the guide slope (31) form a sliding fit structure.

3. The snap-on manhole cover for easy installation according to claim 1, characterized in that: A rubber layer (55) is provided on the end surface of the abutment block (54).

4. A snap-on manhole cover for easy installation according to claim 1, characterized in that: The upper surface edge of the manhole cover body (1) is engraved with a first marking groove (6), and the upper surface edge of the manhole seat (2) is engraved with a corresponding second marking groove (7). The first marking groove (6) and the second marking groove (7) are correspondingly set.

5. A snap-on manhole cover for easy installation according to claim 1, characterized in that: The depth of the groove (51) is greater than the thickness of the anti-rotation block (5).

6. A snap-on manhole cover for easy installation according to claim 1, characterized in that: The width of the snap-fit ​​part (4) is less than the distance between the two anti-rotation blocks (5).

7. A snap-on manhole cover for easy installation according to claim 1, characterized in that: The anti-rotation block (5) and the buckle unit (3) are integrally formed.

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