A load-bearing prefabricated manhole and construction method

Abstract

The present invention relates to a load-bearing prefabricated manhole and a construction method, which comprises a prefabricated manhole outer frame, a waterproof layer, a drain pipe, a water level sensor, a spring group and a manhole cover. The prefabricated manhole outer frame comprises a hollow rectangular frame structure connected by an adjustable connecting rod, a hollow column and a crossbeam, and the side walls of the prefabricated manhole outer frame are provided with pipeline through holes; the adjustable connecting rod comprises a horizontal connecting rod and a vertical connecting rod that can be adjusted in direction along the prefabricated manhole outer frame; the hollow column and The horizontal connecting rods have connecting balls built into them, and the hollow columns are connected to the connecting balls of the horizontal connecting rods through their connecting balls, and the hollow columns are fixedly connected to the bottom crossbeams; the ends of the drain pipes are provided with threads, and the outer surface of the drain pipes is flat against the adjustable barbs; the water level sensor is arranged at the top of the prefabricated manhole outer frame; the spring group is arranged at the bottom of the prefabricated manhole outer frame, and the upper limit of the compressive weight of the spring group is less than or equal to half of the total weight of the drain pipe filled with water; the manhole cover is laid on the upper surface of the prefabricated manhole outer frame.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and in particular relates to a load-bearing prefabricated assembly manhole and a construction method. Background Art

[0002] The renovation of the environment and equipment facilities in old residential areas often involves the addition and replacement of manholes. The plastic inspection wells currently used are suitable for use in community flower beds, but due to insufficient load-bearing capacity and easy collapse, they are not suitable for use in community roads and other load-bearing areas. In addition, the height of the drainage pipes in each community is inconsistent, and the initial drainage slope is different. In areas with complex pipelines, it is difficult for the finished wells to meet the access height requirements of all drainage pipes. Therefore, brick inspection wells are still used in such areas. However, brick inspection wells often face a series of problems such as long construction period, difficulty in ensuring construction quality, low construction efficiency, and difficulty in later maintenance.

[0003] Therefore, how to provide a load-bearing prefabricated manhole and construction method to improve the quality of the manhole and speed up the installation efficiency is a technical problem that technical personnel in this field urgently need to solve. Summary of the invention

[0004] The present invention provides a load-bearing prefabricated assembly manhole and a construction method, which are used to solve the problems of long construction period and difficult quality assurance faced by traditional brick-built inspection wells. Prefabrication in the factory greatly reduces on-site wet operations and improves construction quality and efficiency.

[0005] In order to solve the above technical problems, the present invention includes the following technical solutions:

[0006] A load-bearing prefabricated manhole, comprising:

[0007] A prefabricated manhole outer frame, the prefabricated manhole outer frame includes a hollow rectangular frame structure enclosed and connected by an adjustable connecting rod, a hollow column, and a cross beam, and the side walls of the prefabricated manhole outer frame are provided with pipeline through holes; the adjustable connecting rod includes a horizontal connecting rod and a vertical connecting rod, the horizontal connecting rod can be adjusted laterally along the side wall of the prefabricated manhole outer frame, and the vertical connecting rod can be adjusted longitudinally along the side wall of the prefabricated manhole outer frame; the hollow column has a built-in connecting ball that can move along the height direction, the horizontal connecting rod has a built-in connecting ball that can move along the horizontal direction, the hollow column is connected to the connecting ball of the horizontal connecting rod through its connecting ball, and the hollow column is fixedly connected to the bottom cross beam;

[0008] A waterproof layer, which is a self-adhesive waterproof roll material, used to waterproof and seal the connection nodes at the holes on the side walls of the prefabricated manhole outer frame;

[0009] A drain pipe, wherein the end of the drain pipe is provided with a thread, the outer surface of the drain pipe is flat against the adjustable barb, and after installation, the adjustable barb obliquely intersects with the outer wall of the drain pipe;

[0010] A water level sensor, the water level sensor being arranged at the top of the outer frame of the prefabricated manhole;

[0011] A spring group, the spring group is arranged at the bottom of the prefabricated manhole outer frame, and the upper limit of the compressive weight of the spring group is less than or equal to half of the total weight of the drainage pipe filled with water;

[0012] A manhole cover is laid on the upper surface of the prefabricated manhole outer frame.

[0013] Furthermore, it also includes a support column, which is arranged in the hollow column, and the position and height of the support column are determined by the position of the drain pipe and the horizontal connecting rod for fixing the drain pipe.

[0014] Furthermore, the middle section of the hollow column is a hollow cylinder with a notch, and both ends of the hollow column are square hollow cylinders.

[0015] Furthermore, the end of the support column is provided with a thread matching the hollow column, and the support column is fixed in the hollow column by screws.

[0016] Furthermore, connecting locks are arranged at intervals on the waterproof layer, and the connecting locks are connected to horizontal connecting rods and vertical connecting rods on the prefabricated manhole outer frame.

[0017] The present invention also provides a construction method for a load-bearing prefabricated manhole, which comprises the following steps:

[0018] Step S1, providing the load-bearing prefabricated assembly manhole for standby;

[0019] Step S2, installing the prefabricated manhole outer frame;

[0020] Step S3, setting the height of the drain pipe;

[0021] Step S4, inserting the drainage pipe into the through hole of the prefabricated manhole outer frame to complete the connection between the drainage pipe and the prefabricated manhole outer frame;

[0022] Step S5, determining the positions of the horizontal connecting rod and the vertical connecting rod;

[0023] Step S6, completing the installation of the upper and lower support columns;

[0024] Step S7, installing a waterproof layer;

[0025] Step S8, fixing the drain pipe bolts;

[0026] Step S9, adjusting the angle of the adjustable barb;

[0027] Step S10: Install the manhole cover to complete the installation of the load-bearing prefabricated manhole.

[0028] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0029] The present invention provides a load-bearing prefabricated manhole and a construction method, which are suitable for pipe diameters of different specifications, and because the position of the pipe diameter can be adjusted according to the actual needs on site, it is suitable for communities with different drainage height requirements. Compared with traditional brick manholes, some rods of the load-bearing prefabricated manhole of the present invention have been installed during the production process, and the nodes that need to be installed on site are mostly in the form of bolts or locks. Therefore, the whole process is convenient and fast, green and low-carbon, and the efficacy can be greatly improved. In addition, the amount of materials and labor costs can also be greatly reduced. Compared with the currently common plastic inspection wells, because of the existence of an external frame, it has a certain load-bearing capacity and can be applied to areas that need to bear weight, such as community main roads. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a structural schematic diagram of a load-bearing prefabricated manhole according to an embodiment of the present invention;

[0031] Figure 2 This is a second structural schematic diagram of a load-bearing prefabricated manhole according to an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the connection between the hollow columns and the bottom crossbeams in a load-bearing prefabricated assembly manhole according to an embodiment of the present invention;

[0033] Figure 4 It is a schematic diagram of an adjustable connecting rod in a load-bearing prefabricated manhole according to an embodiment of the present invention;

[0034] Figure 5 It is a schematic diagram of the connection between the adjustable barb and the drainage pipe in the load-bearing prefabricated assembly manhole according to one embodiment of the present invention;

[0035] Figure 6 It is a schematic diagram of the installation of adjustable barbs in a load-bearing prefabricated manhole according to an embodiment of the present invention.

[0036] In the figure:

[0037] 10-drain pipe, 11-horizontal connecting rod, 12-vertical connecting rod, 13-hollow column, 14-connecting ball, 15-bottom beam, 16-support column, 17-adjustable barb, 18-spring group, 19-thread. DETAILED DESCRIPTION

[0038] The following is a further detailed description of a load-bearing prefabricated manhole and construction method provided by the present invention in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will become clearer. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. For the convenience of description, the "upper" and "lower" described below are consistent with the upper and lower directions of the accompanying drawings, but this cannot be a limitation of the technical solution of the present invention.

[0039] Embodiment 1, below combines Figures 1 to 6 , detailing the structural composition of the load-bearing prefabricated manhole.

[0040] Please refer to Figures 1 to 6 A load-bearing prefabricated manhole comprises a prefabricated manhole outer frame, a waterproof layer, a drainage pipe 10, a water level sensor, a spring group 18 and a manhole cover.

[0041] The prefabricated manhole outer frame includes a hollow rectangular frame structure connected by an adjustable connecting rod, a hollow column 13, and a cross beam. The side walls of the prefabricated manhole outer frame are provided with pipeline through holes; the adjustable connecting rod includes a horizontal connecting rod 11 and a vertical connecting rod 12. The horizontal connecting rod 11 can be adjusted laterally along the side wall of the prefabricated manhole outer frame, and the vertical connecting rod 12 can be adjusted longitudinally along the side wall of the prefabricated manhole outer frame; the hollow column 13 has a built-in connecting ball 14 that can move along the height direction, and the horizontal connecting rod 11 has a built-in connecting ball 14 that can move along the horizontal direction. The hollow column 13 is connected to the connecting ball 14 of the horizontal connecting rod 11 through its connecting ball 14, and the hollow column 13 is fixedly connected to the bottom cross beam 15. The waterproof layer is a self-adhesive waterproof membrane, which is used to waterproof and seal the connection nodes at the holes on the side walls of the prefabricated manhole outer frame. The end of the drain pipe 10 is provided with a thread 19, and the outer surface of the drain pipe 10 is flat against the adjustable barb 17. After installation, the adjustable barb 17 intersects obliquely with the outer wall of the drain pipe 10. The water level sensor is set at the top of the prefabricated manhole outer frame. The spring group 18 is set at the bottom of the prefabricated manhole outer frame, and the upper limit of the compressive weight of the spring group 18 is less than or equal to half of the total weight of the drain pipe 10 filled with water; the manhole cover is laid on the upper surface of the prefabricated manhole outer frame.

[0042] Specifically, the four sides of the prefabricated manhole outer frame can be connected to the drain pipe 10, which can be applied to drain pipes 10 of different sizes. The positions of the horizontal connecting rod 11 and the vertical connecting rod 12 can be adjusted in the longitudinal and transverse directions, so it can be applied to drain pipes 10 of different specifications. A number of spring groups 18 are set at the bottom of the prefabricated manhole outer frame. If the weight of the drain pipe 10 when filled with water is A, the upper limit of the compressive weight that the spring group 18 can withstand should not be greater than 1 / 2A. When the water level in the drain pipe 10 is higher than half of the pipe diameter, the spring is compressed, the height of the pipe decreases, and the speed of the drain pipe 10 draining water into the inspection well increases, thereby alleviating the occurrence of the problem of flooding.

[0043] In this embodiment, more preferably, it further includes a support column 16, which is disposed in the hollow column 13, and the position and height of the support column 16 are determined by the position of the drain pipe 10 and the horizontal connecting rod 11 for fixing the drain pipe.

[0044] In this embodiment, more preferably, the middle section of the hollow column 13 is a hollow cylinder with a notch, and both ends of the hollow column 13 are square hollow cylinders.

[0045] In this embodiment, more preferably, the end of the support column 16 is provided with a thread 19 matching the hollow column 13, and the support column 16 is fixed in the hollow column 13 by screws.

[0046] In this embodiment, more preferably, connecting locks are arranged at intervals on the waterproof layer, and the connecting locks are connected to the horizontal connecting rods 11 and the vertical connecting rods 12 on the outer frame of the prefabricated manhole.

[0047] In this embodiment, more preferably, a thread 19 is provided at the end of the drain pipe 10. After the drain pipe 10 is installed, it is installed and tightened in the barrel with a nut. During the tightening process, the plate or corrugated plastic barrel is tightened together to prevent water leakage.

[0048] In particular, a water level sensor is arranged on the top of the prefabricated manhole outer frame. If the water level exceeds the warning line, it indicates that the water level of the manhole is high and the drainage pipe 10 may be blocked, which can provide a certain basis for maintenance.

[0049] Please continue to refer to Figures 1 to 6 The present invention also provides a construction method for a load-bearing prefabricated manhole, which comprises the following steps:

[0050] Step S1, providing the load-bearing prefabricated assembly manhole for standby;

[0051] Step S2, installing the prefabricated manhole outer frame;

[0052] Step S3, setting the height of the drain pipe 10;

[0053] Step S4, inserting the drainage pipe 10 into the through hole of the prefabricated manhole outer frame to complete the connection between the drainage pipe 10 and the prefabricated manhole outer frame;

[0054] Step S5, the positions of the horizontal connecting rod 11 and the vertical connecting rod 12 are determined;

[0055] Step S6, completing the installation of the upper and lower support columns 16;

[0056] Step S7, installing a waterproof layer;

[0057] Step S8, fixing the drain pipe 10 with bolts;

[0058] Step S9, adjusting the angle of the adjustable barb 17;

[0059] Step S10: Install the manhole cover to complete the installation of the load-bearing prefabricated manhole.

[0060] The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. The above embodiments only express several embodiments of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A load-bearing prefabricated manhole, characterized in that: include: A prefabricated manhole outer frame, the prefabricated manhole outer frame includes a hollow rectangular frame structure enclosed and connected by an adjustable connecting rod, a hollow column, and a cross beam, and the side walls of the prefabricated manhole outer frame are provided with pipeline through holes; the adjustable connecting rod includes a horizontal connecting rod and a vertical connecting rod, the horizontal connecting rod can be adjusted laterally along the side wall of the prefabricated manhole outer frame, and the vertical connecting rod can be adjusted longitudinally along the side wall of the prefabricated manhole outer frame; the hollow column has a built-in connecting ball that can move along the height direction, the horizontal connecting rod has a built-in connecting ball that can move along the horizontal direction, the hollow column is connected to the connecting ball of the horizontal connecting rod through its connecting ball, and the hollow column is fixedly connected to the bottom cross beam; A waterproof layer, which is a self-adhesive waterproof roll material, used to waterproof and seal the connection nodes at the holes on the side walls of the prefabricated manhole outer frame; A drain pipe, wherein the end of the drain pipe is provided with a thread, the outer surface of the drain pipe is flat against the adjustable barb, and after installation, the adjustable barb obliquely intersects with the outer wall of the drain pipe; A water level sensor, the water level sensor being arranged at the top of the outer frame of the prefabricated manhole; A spring group, the spring group is arranged at the bottom of the prefabricated manhole outer frame, and the upper limit of the compressive weight of the spring group is less than or equal to half of the total weight of the drainage pipe filled with water; A manhole cover is laid on the upper surface of the prefabricated manhole outer frame.

2. The load-bearing prefabricated manhole according to claim 1 is characterized in that: It also includes a support column, which is arranged in the hollow column. The position and height of the support column are determined by the position of the drain pipe and the horizontal connecting rod used to fix the drain pipe.

3. The load-bearing prefabricated manhole according to claim 2 is characterized in that: The middle section of the hollow column is a hollow cylinder with a notch, and the two ends of the hollow column are square hollow cylinders.

4. The load-bearing prefabricated manhole according to claim 3 is characterized in that: The end of the support column is provided with a thread matching the hollow column, and the support column is fixed in the hollow column by screws.

5. The load-bearing prefabricated manhole according to claim 4 is characterized in that: Connecting lock buckles are arranged at intervals on the waterproof layer, and the connecting lock buckles are connected to the horizontal connecting rods and the vertical connecting rods on the outer frame of the prefabricated manhole.

6. A construction method for a load-bearing prefabricated manhole, characterized in that: The steps include: Step S1, providing the load-bearing prefabricated manhole as described in any one of claims 2 to 5 for standby; Step S2, installing the prefabricated manhole outer frame; Step S3, setting the height of the drain pipe; Step S4, inserting the drainage pipe into the through hole of the prefabricated manhole outer frame to complete the connection between the drainage pipe and the prefabricated manhole outer frame; Step S5, determining the positions of the horizontal connecting rod and the vertical connecting rod; Step S6, completing the installation of the upper and lower support columns; Step S7, installing a waterproof layer; Step S8, fixing the drain pipe bolts; Step S9, adjusting the angle of the adjustable barb; Step S10: Install the manhole cover to complete the installation of the load-bearing prefabricated manhole.

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