Suspension trigger container for well lid lifting
By designing a suspended trigger container for manhole cover lifting, the safety hazard caused by debris accumulation in the manhole cover lifting device was solved, and rainwater was effectively collected and filtered, ensuring the normal lifting and lowering of the manhole cover and the smoothness of the road.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TONGXIANG SHENGTIDE TECHNOLOGY CO LTD
- Filing Date
- 2025-08-15
- Publication Date
- 2026-07-21
AI Technical Summary
Existing manhole cover lifting devices are prone to failure to reset due to debris accumulation during rainwater collection, posing a safety hazard.
Design a suspended trigger container for lifting manhole covers. The container has a hollow main body with a water inlet at the top and a water outlet at the bottom. The connecting rope is suspended from the lifting device of the manhole cover. It can filter debris while collecting rainwater to prevent debris from accumulating.
It achieves effective rainwater collection and filtration, reduces the impact of debris accumulation on the device, ensures the normal raising and lowering of manhole covers and the smoothness of roads, and improves safety.
Smart Images

Figure CN224531864U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of municipal drainage devices, specifically to a suspended trigger container for lifting manhole covers. Background Technology
[0002] Existing retractable manhole covers primarily collect rainwater entering the manhole through a suspended water-collecting container. When the container reaches a certain weight, a lifting device within the manhole raises the manhole cover, increasing the water inlet area and allowing rainwater to enter more quickly. However, because road puddles often contain debris (such as leaves and stones), the water-collecting container also collects this debris. This accumulation of debris can clog the outlet, preventing the container from returning to its original weight and causing the manhole cover to protrude from the road surface, posing a significant safety hazard. Utility Model Content
[0003] The purpose of this utility model is to provide a suspended trigger container for lifting manhole covers. This container can collect rainwater entering the manhole while also filtering it, reducing the risk of debris accumulation in the main cavity affecting the performance of the main body. This also ensures the flatness between the manhole cover and the road surface and improves the safety of lifting and lowering the manhole cover.
[0004] The technical solution adopted by this utility model to solve the above problems is:
[0005] A suspended trigger container for lifting manhole covers includes:
[0006] The main body is hollow. The top of the main body is conical and has several water inlet holes on its end face. The bottom end face of the main body has a water outlet hole at the center. The diameter of the water outlet hole is larger than the diameter of the water inlet hole, and both the water inlet hole and the water outlet hole are connected to the cavity of the main body.
[0007] At least three connecting ropes are used to hang the main body on the lifting device of the manhole cover, and the connecting ropes are arranged at equal angles around the central axis of the main body.
[0008] The connecting rope has loops at both ends, and the main body has several connecting pieces for connecting the loops, with each connecting piece corresponding to a connecting rope.
[0009] As a further improvement to the above technical solution, the main body includes a top cover and a cylinder. The water inlet is located on the top cover, and the cylinder is a hollow structure with an open top and a closed bottom. The water outlet is located on the cylinder. When the top cover is installed on the cylinder, the bottom end of the top cover is inserted into and snapped onto the top end of the cylinder.
[0010] As a further improvement to the above technical solution, the edge of the top cover extends radially outward to form a first extension piece, and the edge of the top of the cylinder extends radially outward to form a second extension piece. When the top cover is installed on the cylinder, the first extension piece and the second extension piece fit together, and the connecting piece is integrally connected to the second extension piece. The first extension piece has a slot for the connecting piece to pass through.
[0011] As a further improvement to the above technical solution, a reinforcing plate is provided between the bottom surface of the second extension plate and the outer surface of the cylinder. The top end of the reinforcing plate is integrally connected to the second extension plate and its inner end is integrally connected to the cylinder. A beveled structure is provided on the end face of the outer end of the reinforcing plate.
[0012] As a further improvement to the above technical solution, the bottom end of the main body is in the shape of an inverted frustum.
[0013] As a further improvement to the above technical solution, the top and bottom edges of the main body are provided with rounded chamfer structures.
[0014] Compared with the prior art, this utility model has the following advantages and effects:
[0015] This utility model, through its structural design, can collect rainwater entering the manhole while also filtering it. Debris larger than the inlet hole is trapped outside the main body and guided to fall off. Simultaneously, debris entering the main body cavity through the inlet hole is discharged through the outlet hole, reducing the risk of debris accumulation affecting the manhole's usability. This ensures the effectiveness of lifting and resetting the manhole cover, maintains the flatness between the manhole cover and the road surface, and improves the safety of manhole cover lifting and lowering. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of the suspended trigger container for lifting manhole covers, from one perspective.
[0017] Figure 2 This is a second enlarged view of the structure of the suspended trigger container for lifting manhole covers according to this utility model.
[0018] Figure 3 This is a side view of the structure of the suspended trigger container for lifting manhole covers according to this utility model.
[0019] Figure 4 This is a partial enlarged schematic diagram of the suspended trigger container for lifting manhole covers according to this utility model.
[0020] Figure 5 This is a structural schematic diagram of the suspended trigger container for lifting manhole covers in its installation state.
[0021] The components include: main body 1, top cover 11, cylinder 12, connecting rope 2, ring buckle 21, water inlet 3, water outlet 4, connecting piece 5, rounded chamfer structure 6, first extension piece 71, second extension piece 72, slot 73, reinforcing piece 8, inclined structure 81, well cover 91, well cylinder 92, and lifting device 93. Detailed Implementation
[0022] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.
[0023] See Figures 1-5 This embodiment of the suspended trigger container for lifting manhole covers includes a main body 1 and at least three connecting ropes 2. The main body 1 has a hollow structure, with a conical top and several water inlet holes 3 on its end face. A water outlet hole 4 is located at the center of the bottom end face of the main body 1. The diameter of the water outlet hole 4 is larger than the diameter of the water inlet hole 3, and both the water inlet hole 3 and the water outlet hole 4 are connected to the cavity of the main body 1. This allows debris entering the cavity of the main body 1 through the water inlet hole 3 to be discharged from the main body 1 through the water outlet hole 4, reducing the risk of the container's effectiveness being affected by debris accumulation in the cavity of the main body 1. The connecting ropes 2 are used to hang the main body 1 on the lifting device of the manhole cover. Each connecting rope 2 is arranged at an equal angle around the central axis of the main body 1. Both ends of the connecting rope 2 are provided with a loop 21. The main body 1 is provided with several connecting pieces 5 for connecting the loop 21. Each connecting piece 5 corresponds to a connecting rope 2.
[0024] In use, the main body 1 is connected to the lifting device via the loops 21 at both ends of the connecting rope 2, so that the main body 1 is suspended on the lifting device, as shown below. Figure 5 As shown in the diagram. When it rains, rainwater enters the manhole through the manhole cover and falls onto the top of the main body 1, thus flowing into the cavity of the main body 1 through the water inlet 3. At the same time, the rainwater in the cavity of the main body 1 can also be discharged through the water outlet 4.
[0025] As the rainfall intensifies, the amount of rainwater entering the manhole through the manhole cover also increases. This causes the amount of rainwater entering the cavity of the main body 1 to gradually exceed the amount exiting, resulting in the accumulation of rainwater in the cavity of the main body 1. The increased weight of the main body 1 allows it to drive the lifting device via the connecting rope 2 under the action of gravity. As a result, the manhole cover can be lifted relative to the manhole under the action of the lifting device (in this embodiment, the lifting device uses a lever to transform the downward force applied by the main body 1 to the lifting device into the force of the push rod on the lifting device lifting the manhole cover upward). This creates a space for rainwater to enter between the manhole cover and the manhole due to the height difference, accelerating the reduction of rainwater on the road. At the same time, during the rapid entry of rainwater into the manhole, the amount of rainwater entering the main body 1 is guaranteed, thereby maintaining the driving of the lifting device by the main body 1 and ensuring the stability of the relative position between the manhole cover and the manhole, achieving the purpose of quickly draining accumulated water from the road.
[0026] When the rainfall decreases or the water accumulation on the road decreases to a certain extent, the amount of rainwater entering the manhole decreases, causing the amount of rainwater entering the main body 1 to gradually become less than the amount discharged. As a result, the weight of the main body 1 decreases, causing the main body 1 to gradually release the drive of the lifting device, so that the manhole cover can gradually descend until it is fully reset.
[0027] See Figure 1 , Figure 2 The main body 1 includes a top cover 11 and a cylindrical body 12. A water inlet 3 is located on the top cover 11. The cylindrical body 12 is a hollow structure with an open top and closed bottom. A water outlet 4 is located on the cylindrical body 12. When the top cover 11 is installed on the cylindrical body 12, its bottom end is inserted into and snapped onto the top end of the cylindrical body 12. This modular structure of the main body 1 reduces the difficulty of manufacturing and processing, ensures the integrity and accuracy of the structure, and also improves the convenience of cleaning the cavities of the main body 1.
[0028] See Figure 2 , Figure 3 The top and bottom edges of the main body 1 are provided with rounded chamfer structures 6, which reduces the sharpness of the container's appearance and improves the safety of the container's use, reducing the risk of injury caused by being poked by the top of the container or bumped by the bottom of the container.
[0029] See Figure 3 The bottom of the main body 1 is shaped like an inverted frustum, which can guide the rainwater in the container to converge towards the outlet hole 4, thereby ensuring the complete drainage of rainwater in the container.
[0030] See Figure 3 , Figure 4The edge of the top cover 11 extends radially outward to form a first extension piece 71, and the edge of the top of the cylinder 12 extends radially outward to form a second extension piece 72. When the top cover 11 is installed on the cylinder 12, the first extension piece 71 and the second extension piece 72 fit together, which facilitates the handling of the container by holding the first extension piece 71 and the second extension piece 72 by hand. The connecting piece 5 is integrally connected to the second extension piece 72. The first extension piece 71 has a slot 73 for the connecting piece 5 to pass through. When the connecting rope 2 is connected to the connecting piece 5 through the ring buckle 21, the ring buckle 21 can play the role of restricting the top cover 11 from detaching from the cylinder 12, reducing the risk of the top cover 11 falling off the cylinder 12 when the connection between the top cover 11 and the cylinder 12 becomes loose.
[0031] See Figure 4 A reinforcing plate 8 is provided between the bottom surface of the second extension plate 72 and the outer surface of the cylinder 12. The top end of the reinforcing plate 8 is integrally connected to the second extension plate 72 and its inner end is integrally connected to the cylinder 12, which improves the connection strength between the second extension plate 72 and the cylinder 12 and ensures the stability of the container in the suspended state. A beveled structure 81 is provided on the end face of the outer end of the reinforcing plate 8, which reduces the volume of the reinforcing plate 8 while ensuring the use effect of the reinforcing plate 8, so that the reinforcing plate 8 can be hidden in the space between the second extension plate 72 and the cylinder 12, thereby reducing the risk of the reinforcing plate 8 being exposed and causing damage.
[0032] The above description in this specification is merely illustrative of the present invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the content of this specification or exceed the scope defined in the claims, all of which shall fall within the protection scope of this invention.
Claims
1. A suspension triggered container for the lifting of a manhole cover, characterised in that, include: The main body is hollow. The top of the main body is conical and has several water inlet holes on its end face. The bottom end face of the main body has a water outlet hole at the center. The diameter of the water outlet hole is larger than the diameter of the water inlet hole, and both the water inlet hole and the water outlet hole are connected to the cavity of the main body. At least three connecting ropes are used to hang the main body on the lifting device of the manhole cover, and the connecting ropes are arranged at equal angles around the central axis of the main body. The connecting rope has loops at both ends, and the main body has several connecting pieces for connecting the loops, with each connecting piece corresponding to a connecting rope.
2. A drop trigger container for the lifting of a manhole cover as claimed in claim 1, wherein: The main body includes a top cover and a cylinder. The water inlet is located on the top cover. The cylinder is a hollow structure with an open top and a closed bottom. The water outlet is located on the cylinder. When the top cover is installed on the cylinder, the bottom end of the top cover is inserted into and snapped onto the top end of the cylinder.
3. A drop trigger container for the lifting of a manhole cover as claimed in claim 2, wherein: The edge of the top cover extends radially outward to form a first extension piece, and the edge of the top of the cylinder extends radially outward to form a second extension piece. When the top cover is installed on the cylinder, the first extension piece and the second extension piece fit together, and the connecting piece is integrally connected to the second extension piece. The first extension piece has a slot for the connecting piece to pass through.
4. A drop trigger container for the lifting of a manhole cover as claimed in claim 3, wherein: A reinforcing plate is provided between the bottom surface of the second extension plate and the outer side surface of the cylinder. The top end of the reinforcing plate is integrally connected to the second extension plate and its inner end is integrally connected to the cylinder. The outer end face of the reinforcing plate is provided with a bevel structure.
5. The drop cover lifting suspension trigger container of claim 1, wherein: The bottom of the main body is shaped like an inverted frustum.
6. The drop cover lifting suspension trigger container of claim 1, wherein: The top and bottom edges of the main body are provided with rounded chamfer structures.