Well ring mounting structure of prefabricated well
By inserting reinforcing rods and cones inside the precast manhole ring, combined with buffering and anti-settlement mechanisms, the problem of settlement of the precast manhole ring due to the passage of large vehicles is solved, thus improving the stability and safety of the manhole ring.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SINOHYRDO ENG BUREAU 3 CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-12
AI Technical Summary
In existing technologies, precast manhole rings are prone to settling when large vehicles pass over them, resulting in poor vehicle operation and posing safety hazards.
A precast manhole ring installation structure was designed, including a roadbed, manhole body, precast manhole ring body, manhole cover, leveling layer, reinforcement layer and asphalt pavement layer. By inserting reinforcing rods and insertion cones inside the precast manhole ring body, combined with buffer mechanism and anti-settlement mechanism, the connection strength is improved and the risk of settlement is reduced.
The precast manhole rings have been enhanced in terms of impact resistance and shear strength, reducing the risk of settlement and ensuring the stability and safety of the road.
Smart Images

Figure CN224227850U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of well ring installation technology, specifically to a prefabricated well ring installation structure. Background Technology
[0002] Inspection wells are installed to facilitate the installation and maintenance of power supply, water supply, drainage, sewage, and communication lines in urban underground infrastructure. Inspection wells are generally located at pipe intersections, bends, and at regular intervals on straight pipe sections.
[0003] Manhole installation typically employs a two-stage paving method, involving first paving, then cutting and installation, and finally paving again. This results in the road surface around the manhole ring being formed twice. Furthermore, to expedite construction, large-area rollers are often used, but the road surface around the manhole ring is difficult to compact properly. This leads to lower density at the junction of the two paved sections, causing the manhole ring to be subjected to significant impact and shear forces from large vehicles passing over it. This can easily cause the manhole ring to settle, affecting vehicle traffic and creating safety hazards.
[0004] Therefore, it is of great importance to design a prefabricated well ring installation structure to solve the above-mentioned defects. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model designs a prefabricated manhole ring installation structure. This prefabricated manhole ring installation structure aims to solve the technical problem that, under existing technologies, after the installation of prefabricated manhole rings, large vehicles continuously pass over the manhole rings, causing the manhole rings to settle, which in turn affects the driving conditions of the vehicles and easily creates safety hazards.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A prefabricated manhole ring installation structure includes a roadbed, a manhole body penetrating the interior of the roadbed, a prefabricated manhole ring body mounted on the top of the manhole body, a manhole cover hinged inside the prefabricated manhole ring body, a leveling layer, a reinforcement layer and an asphalt pavement layer sequentially arranged on the outer side of the prefabricated manhole ring body from bottom to top, multiple sets of reinforcing rods passing through the interior of the prefabricated manhole ring body, and multiple sets of anti-settlement mechanisms installed on the outer side of the prefabricated manhole ring body;
[0008] Each of the multiple sets of reinforcing rods has an operating screw rotatably connected inside. Multiple sets of movable sleeves are installed on the outer side of each operating screw. The inner side of each movable sleeve is threadedly connected to the operating screw via a connecting sleeve, and the connecting sleeve is rotatably connected to the movable sleeve. Multiple sets of transmission rods are rotatably connected at equal intervals on the outer side of each movable sleeve. A reinforcing cone is rotatably connected to the bottom end of each transmission rod. An insertion cone is slidably connected to the bottom end of each reinforcing rod. A buffer mechanism is installed inside the reinforcing rod and at the top of the insertion cone.
[0009] As a preferred embodiment of this utility model, a positioning plate is fixedly connected to the top of the reinforcing rod, and movable holes are provided on the outer side of the reinforcing rod at positions corresponding to multiple sets of reinforcing cones.
[0010] As a preferred embodiment of this utility model, the top end of the insertion cone is slidably connected to the reinforcing rod via a groove, and a sealing ring is sleeved on the outer side of the insertion cone.
[0011] As a preferred embodiment of this utility model, the buffer mechanism includes a first sleeve fixedly connected to the top of the insertion cone. The first sleeve is slidably connected to the inside of the reinforcing rod via a first sliding column, and a first spring damping shock absorber is installed inside the first sleeve.
[0012] As a preferred embodiment of this utility model, the bottom end of the reinforcing rod is symmetrically connected with sliding rods, and buffer springs are sleeved on the outer sides of both sets of sliding rods. Sliding sleeves are slidably connected to the outer sides of the sliding rods and the outer sides of the two sets of buffer springs. A transmission arm is installed between the two sets of sliding sleeves and the first sleeve, and the two ends of the transmission arm are rotatably connected to the first sleeve and the sliding sleeve respectively.
[0013] As a preferred embodiment of this utility model, the leveling layer is formed by mortar pouring, and the reinforcing layer is formed by steel fiber reinforced concrete pouring.
[0014] As a preferred embodiment of this utility model, the anti-settlement mechanism includes multiple sets of contraction grooves opened on the outside of the precast well ring body. Multiple sets of fastening blocks are slidably connected to the outside of the multiple sets of contraction grooves. A second sleeve is fixedly connected inside the multiple sets of contraction grooves. The multiple sets of fastening blocks are slidably connected to the second sleeves through second sliding columns. A second spring damping shock absorber is installed inside the multiple sets of second sleeves.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] 1. In this utility model, through the design of reinforcing rods, a leveling layer is first laid to level the surface, and then the precast well ring body is erected on the top of the well body. Subsequently, a reinforcing layer is poured, and before it solidifies, multiple sets of reinforcing rods are inserted inside the precast well ring body. The reinforcing rods improve the connection between the precast well ring body and the reinforcing layer. After the reinforcing layer solidifies, the precast well ring body is not only more solid, but also, with the reinforcement and connection of the reinforcing rods, the precast well ring body can withstand greater impact and shear forces. At the same time, the risk of settlement of the precast well ring body can be reduced by the buffer mechanism inside the insertion cone.
[0017] 2. In this utility model, through the design of the anti-settlement mechanism, when the precast well ring body is subjected to the impact force of a vehicle passing by, multiple sets of fastening blocks, the second sliding column, and the second sleeve not only provide additional connection points, making the precast well ring body more secure after installation, but also ensure that the outer side of the fastening block is close to the inner side of the reinforcement layer. When the precast well ring body is subjected to the pressure of a vehicle passing by, the fastening block retracts into the shrinkage groove, causing the second sliding column to slide into the inner side of the second sleeve. The second spring damping shock absorber is used for buffering. At the same time, the fastening block and the reinforcement layer have a large friction force, further reducing the risk of settlement of the precast well ring body. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a cross-sectional view of the overall internal structure of this utility model;
[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0021] Figure 4 This is a schematic diagram of the external structure of the reinforcing rod of this utility model;
[0022] Figure 5 This is a schematic diagram of the internal structure of the reinforcing rod of this utility model;
[0023] Figure 6 for Figure 5 Enlarged view of section B in the middle.
[0024] In the diagram: 1. Roadbed; 2. Manhole body; 3. Precast manhole ring body; 4. Manhole cover; 5. Leveling layer; 6. Reinforcing layer; 7. Asphalt pavement layer; 8. Reinforcing rod; 801. Operating screw; 802. Moving sleeve; 803. Connecting sleeve; 804. Transmission rod; 805. Reinforcing cone; 806. Insertion cone; 807. Buffer mechanism; 808. Positioning plate; 809. Movable hole; 810. Slide groove; 811. Sealing ring; 812. First sleeve; 813. First sliding column; 814. First spring damping shock absorber; 815. Slide rod; 816. Buffer spring; 817. Slide sleeve; 818. Transmission arm; 9. Anti-settlement mechanism; 901. Shrinkage groove; 902. Fastening block; 903. Second sleeve; 904. Second sliding column; 905. Second spring damping shock absorber. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0026] Example: Please refer to Figures 1-6 This utility model provides a technical solution:
[0027] A prefabricated manhole ring installation structure includes a roadbed 1, a manhole body 2 penetrating the interior of the roadbed 1, a prefabricated manhole ring body 3 mounted on the top of the manhole body 2, a manhole cover 4 hinged inside the prefabricated manhole ring body 3, a leveling layer 5, a reinforcing layer 6 and an asphalt pavement layer 7 arranged sequentially from bottom to top on the outer side of the prefabricated manhole ring body 3, multiple sets of reinforcing rods 8 passing through the interior of the prefabricated manhole ring body 3, and multiple sets of anti-settlement mechanisms 9 installed on the outer side of the prefabricated manhole ring body 3.
[0028] First, multiple sets of reinforcing rods 8 are rotatably connected to operating screws 801 inside. Multiple sets of movable sleeves 802 are installed on the outside of the operating screws 801. The inside of each set of movable sleeves 802 is threadedly connected to the operating screws 801 through connecting sleeves 803, and the connecting sleeves 803 are rotatably connected to the movable sleeves 802. Multiple sets of transmission rods 804 are rotatably connected at equal intervals on the outside of each set of movable sleeves 802. The bottom end of each set of transmission rods 804 is rotatably connected to a reinforcing cone 805. The bottom end of the reinforcing rod 8 is slidably connected to an insertion cone 806. A buffer mechanism 807 is installed inside the reinforcing rod 8 and at the top of the insertion cone 806. First, a leveling layer 5 is laid to level the surface, and then the precast well ring body 3 is placed on top of the well body 2. Then, the reinforcing layer 6 is poured and allowed to solidify. Before molding, multiple sets of reinforcing rods 8 are inserted inside the precast well ring body 3. By rotating the operating screw 801 and connecting the connecting sleeve 803, multiple sets of moving sleeves 802 are moved downward. Under the transmission of the transmission rod 804, multiple sets of reinforcing cones 805 extend out from inside the reinforcing rods 8, thereby providing a large number of connection points between the reinforcing rods 8 and the reinforcement layer 6, thus improving the connection between the precast well ring body 3 and the reinforcement layer 6. After the reinforcement layer 6 solidifies, the precast well ring body 3 is not only more solid, but also, with the reinforcement support and connection of the reinforcing rods 8, the precast well ring body 3 can withstand greater impact and shear forces. At the same time, under the action of the buffer mechanism 807 inside the insertion cone 806, the risk of settlement of the precast well ring body 3 can be reduced.
[0029] Furthermore, a positioning plate 808 is fixedly connected to the top of the reinforcing rod 8, and an movable hole 809 is provided on the outer side of the reinforcing rod 8 at a position corresponding to the multiple sets of reinforcing cones 805. The positioning plate 808 facilitates the insertion of the reinforcing rod 8 into the interior of the precast well ring body 3 for positioning. When the operation is performed, the multiple sets of reinforcing cones 805 extend out from the interior of the reinforcing rod 8 through the movable hole 809.
[0030] Then, the top of the insertion cone 806 is slidably connected to the reinforcing rod 8 through the groove 810. A sealing ring 811 is sleeved on the outside of the insertion cone 806. The insertion cone 806 facilitates the insertion of the reinforcing rod 8 into the uncured reinforcing layer 6, while the sealing ring 811 ensures the sealing between the insertion cone 806 and the reinforcing rod 8.
[0031] Furthermore, the buffer mechanism 807 includes a first sleeve 812 fixedly connected to the top of the insertion cone 806. The first sleeve 812 is slidably connected to the inside of the reinforcing rod 8 via a first sliding column 813. A first spring damping shock absorber 814 is installed inside the first sleeve 812. After the precast well ring body 3 is installed and the reinforcing layer 6 is solidified, when the precast well ring body 3 is subjected to pressure, the first sleeve 812 can slide on the outside of the first sliding column 813 and use the first spring damping shock absorber 814 for buffering, thereby reducing the risk of settlement of the precast well ring body 3.
[0032] The reinforcing rod 8 has a sliding rod 815 symmetrically connected to its bottom end. Both sets of sliding rods 815 are fitted with buffer springs 816 on their outer sides. Sliding sleeves 817 are slidably connected to the outer sides of the sliding rods 815 and the two sets of buffer springs 816. A transmission arm 818 is installed between the two sets of sliding sleeves 817 and the first sleeve 812. The two ends of the transmission arm 818 are rotatably connected to the first sleeve 812 and the sliding sleeve 817, respectively. When the first sleeve 812 slides on the outer side of the first sliding column 813, it pushes the sliding sleeve 817 on the outer side of the sliding rod 815 under the transmission of the transmission arm 818. This causes the sliding sleeve 817 to push the buffer springs 816 to further disperse the pressure, thereby greatly improving the bearing capacity of the precast well ring body 3 and further reducing the risk of settlement of the precast well ring body 3.
[0033] Secondly, the leveling layer 5 is made of mortar, and the reinforcement layer 6 is made of steel fiber concrete. When installing the precast well ring body 3, the leveling layer 5 is first poured with mortar to level the surface. Then, the precast well ring body 3 is placed on top of the well body 2, and the reinforcement layer 6 made of steel fiber concrete is poured.
[0034] Finally, the anti-settlement mechanism 9 includes multiple sets of contraction grooves 901 opened on the outside of the precast well ring body 3. Multiple sets of fastening blocks 902 are slidably connected to the outside of each set of contraction grooves 901. Second sleeves 903 are fixedly connected inside each set of contraction grooves 901. The fastening blocks 902 are slidably connected to the second sleeves 903 via second sliding columns 904. Second spring damping shock absorbers 905 are installed inside each set of second sleeves 903. After the precast well ring body 3 is installed and the reinforcement layer 6 solidifies, when the precast well ring body 3 is subjected to the impact force of a passing vehicle, the multiple sets of fastening blocks... 902, the second sliding column 904, and the second sleeve 903 not only provide additional connection points, making the precast well ring body 3 more secure after installation, but also ensure that the outer side of the fastening block 902 is close to the inside of the reinforcing layer 6. When the precast well ring body 3 is subjected to the pressure of a vehicle passing by, the fastening block 902 retracts into the contraction groove 901, causing the second sliding column 904 to slide into the inside of the second sleeve 903. The second spring damping shock absorber 905 provides buffering. At the same time, the fastening block 902 and the reinforcing layer 6 have a large frictional force, further reducing the risk of settlement of the precast well ring body 3.
[0035] In this embodiment, the specific implementation scenario is as follows: First, a leveling layer 5 is laid for leveling, then the prefabricated well ring body 3 is erected on top of the well body 2. Subsequently, a reinforcing layer 6 is poured, and before it solidifies, multiple sets of reinforcing rods 8 are inserted inside the prefabricated well ring body 3. By rotating the operating screw 801, multiple sets of moving sleeves 802 are moved downward under the connection of the connecting sleeve 803. Under the transmission of the transmission rod 804, multiple sets of reinforcing cones 805 extend from inside the reinforcing rods 8, thereby providing a large number of connection points between the reinforcing rods 8 and the reinforcing layer 6, thus improving the connection degree between the prefabricated well ring body 3 and the reinforcing layer 6. After the reinforcing layer 6 solidifies, the prefabricated well ring body 3 is not only more robust, but also, with the reinforcement and connection of the reinforcing rods 8, it can withstand greater impact and shear forces. At the same time, under the action of the buffer mechanism 807 inside the inserted cone 806, the risk of settlement of the prefabricated well ring body 3 can be reduced. When the prefabricated well ring body 3 is installed... After the reinforcement layer 6 solidifies, when the precast well ring body 3 is subjected to the impact force of a passing vehicle, the multiple sets of fastening blocks 902, the second sliding column 904, and the second sleeve 903 not only provide additional connection points, making the precast well ring body 3 more secure after installation, but also ensure that the outer side of the fastening block 902 is close to the inside of the reinforcement layer 6. When the precast well ring body 3 is subjected to the pressure of a passing vehicle, the fastening block 902 contracts into the contraction groove 901, causing the second sliding column 904 to slide into the inside of the second sleeve 903. The second spring damping shock absorber 905 provides buffering, and the fastening block 902 has a large frictional force with the reinforcement layer 6, further reducing the risk of settlement of the precast well ring body 3. The entire operation process is simple and convenient. This utility model, through its design, can provide a large amount of reinforcement support and connection for the precast well ring body 3, enabling the precast well ring body 3 to withstand greater impact and shear forces, and also reducing the risk of settlement of the precast well ring body 3.
[0036] 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 prefabricated manhole ring installation structure, comprising a roadbed (1), characterized in that: The roadbed (1) has a manhole (2) running through its interior. A prefabricated manhole ring body (3) is mounted on the top of the manhole (2). A manhole cover (4) is hinged inside the prefabricated manhole ring body (3). A leveling layer (5), a reinforcement layer (6), and an asphalt pavement layer (7) are arranged sequentially from bottom to top on the outside of the prefabricated manhole ring body (3). Multiple sets of reinforcing rods (8) are inserted inside the prefabricated manhole ring body (3). Multiple sets of anti-settlement mechanisms (9) are installed on the outside of the prefabricated manhole ring body (3). Each of the multiple sets of reinforcing rods (8) is rotatably connected to an operating screw (801). Multiple sets of movable sleeves (802) are installed on the outside of the operating screws (801). The interior of each of the multiple sets of movable sleeves (802) is threadedly connected to the operating screws (801) through a connecting sleeve (803). The connecting sleeve (803) is rotatably connected to the movable sleeves (802). Multiple sets of transmission rods (804) are rotatably connected at equal intervals on the outside of each of the multiple sets of movable sleeves (802). The bottom end of each of the multiple sets of transmission rods (804) is rotatably connected to a reinforcing cone (805). The bottom end of the reinforcing rod (8) is slidably connected to an insertion cone (806). A buffer mechanism (807) is installed inside the reinforcing rod (8) and at the top of the insertion cone (806).
2. The prefabricated well ring installation structure according to claim 1, characterized in that: A positioning plate (808) is fixedly connected to the top of the reinforcing rod (8), and an movable hole (809) is provided on the outer side of the reinforcing rod (8) at a position corresponding to the multiple sets of reinforcing cones (805).
3. The prefabricated well ring installation structure according to claim 1, characterized in that: The top end of the insertion cone (806) is slidably connected to the reinforcing rod (8) through a groove (810), and a sealing ring (811) is sleeved on the outside of the insertion cone (806).
4. The prefabricated well ring installation structure according to claim 1, characterized in that: The buffer mechanism (807) includes a first sleeve (812) fixedly connected to the top of the insertion cone (806). The first sleeve (812) is slidably connected to the inside of the reinforcing rod (8) via a first sliding column (813). A first spring damping shock absorber (814) is installed inside the first sleeve (812).
5. The prefabricated well ring installation structure according to claim 4, characterized in that: The bottom end of the reinforcing rod (8) is symmetrically connected with sliding rods (815). Both sets of sliding rods (815) are fitted with buffer springs (816) on their outer sides. Sliding sleeves (817) are slidably connected to the outer side of the sliding rods (815) and the outer side of the two sets of buffer springs (816). Both sets of sliding sleeves (817) are connected to the first sleeve (812) with transmission arms (818). The two ends of the transmission arms (818) are rotatably connected to the first sleeve (812) and the sliding sleeves (817) respectively.
6. The prefabricated well ring installation structure according to claim 1, characterized in that: The leveling layer (5) is made of mortar, and the reinforcing layer (6) is made of steel fiber reinforced concrete.
7. The prefabricated well ring installation structure according to claim 1, characterized in that: The anti-settlement mechanism (9) includes multiple sets of contraction grooves (901) opened on the outside of the precast well ring body (3). Multiple sets of fastening blocks (902) are slidably connected to the outside of the multiple sets of contraction grooves (901). A second sleeve (903) is fixedly connected inside the multiple sets of contraction grooves (901). The multiple sets of fastening blocks (902) are slidably connected to the second sleeve (903) through a second sliding column (904). A second spring damping shock absorber (905) is installed inside the multiple sets of second sleeves (903).