Assembling type steel casing for municipal working well support

Abstract

The utility model discloses a kind of municipal work well support uses assembled steel casing, including at least two arc steel plate units, two adjacent arc steel plate units are sequentially spliced and enclosed to form cylindrical structure;Two ends of each arc steel plate unit are respectively provided with snap groove type bayonet structure, and the snap groove type bayonet structure of the end of two adjacent arc steel plate units is mutually engaged and connected, to realize the detachable fixing between each arc steel plate unit.The utility model municipal work well support uses assembled steel casing adopts multiple arc steel plate units, which are spliced by snap groove type bayonet structure, and can be disassembled and adapted to different diameter work well, convenient to transport and install, can also be recycled and reused, reduce material cost.Moreover, by setting up door-shaped opening, the need for pipeline to be provided with connection is met, without additional punching in later period, avoid damaging casing structure, ensure support strength.

Description

Technical Field

[0001] This utility model relates to the field of steel casings. More specifically, this utility model relates to a modular steel casing for supporting municipal working wells. Background Technology

[0002] Currently, prefabricated steel casings are commonly used for the support of municipal working well foundation pits. However, these casings have the following drawbacks: poor adaptability to pipe connections (requiring on-site cutting of the casing during pipe connection, damaging structural integrity and preventing reuse); insufficient economic efficiency (high scrap rate of cut casings, resulting in significant material waste); and environmental issues (the single-use model does not meet green construction requirements). Existing technologies lack support solutions that can flexibly adapt to different pipe diameters, support rapid disassembly and assembly, and are reusable. Utility Model Content

[0003] To achieve these objectives and other advantages of this utility model, a preferred embodiment of this utility model provides a modular steel casing for supporting municipal working wells, comprising at least two arc-shaped steel plate units, with adjacent arc-shaped steel plate units sequentially spliced ​​together to form a cylindrical structure; each arc-shaped steel plate unit has a slotted latch structure at both ends, and adjacent arc-shaped steel plate units are interlocked and connected to each other through the slotted latch structure at the ends, so as to achieve detachable fixing between each arc-shaped steel plate unit.

[0004] Preferably, at least one of the arc-shaped steel plate units has a U-shaped opening on its side wall for pipes to pass through and connect.

[0005] Preferably, the number of the arc-shaped steel plate units is 2, 3 or 4 pieces, and the curvature of each arc-shaped steel plate unit is adapted to each other, forming a complete circular cylindrical structure after splicing.

[0006] Preferably, when the number of the arc-shaped steel plate units is 4, each arc-shaped steel plate unit is a 90° arc-shaped steel plate, and at least two of the 90° arc-shaped steel plates are respectively provided with at least one U-shaped opening for pipe access and exit.

[0007] Preferably, the slot-type bayonet structure includes a protrusion at one end of the arc-shaped steel plate unit and a groove at the other end that is adapted to the protrusion; in two adjacent arc-shaped steel plate units, the protrusion of one arc-shaped steel plate unit is embedded in the groove of the other arc-shaped steel plate unit to form a convex-concave interlocking connection structure, the cross-section of the protrusion is rectangular, and the cross-sectional shape of the groove is consistent with the cross-sectional shape of the protrusion.

[0008] Preferably, each of the aforementioned arc-shaped steel plate units is composed of at least two segments of arc-shaped steel plates spliced ​​together;

[0009] For any two adjacent sub-arc steel plates, the top of the lower sub-arc steel plate is integrally bent along its arc direction to form two U-shaped guide grooves, which extend along the height direction. The bottom of the upper sub-arc steel plate is integrally bent to form a matching U-shaped edge, which is embedded in the U-shaped guide groove to form a guide structure that can slide up and down. Through holes are opened on the side walls of two adjacent sub-arc steel plates. When the upper and lower sub-arc steel plates are adjusted to the target height, the corresponding through holes are aligned and locking pins are inserted.

[0010] This utility model has at least the following beneficial effects: The modular steel casing for municipal working well support uses multiple arc-shaped steel plate units spliced ​​together through a slotted bayonet structure. It is detachable and adaptable to working wells of different diameters, making transportation and installation convenient. It can also be recycled and reused, reducing material costs. Furthermore, by setting a U-shaped opening, it meets the needs of pipe penetration and connection, eliminating the need for additional drilling later, avoiding damage to the casing structure, and ensuring support strength.

[0011] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0012] Figure 1 This is a top-view structural diagram of the assembled steel casing for supporting municipal working wells in this utility model;

[0013] Figure 2 for Figure 1 A schematic diagram of AA.

[0014] Figure 3 This is a schematic diagram of the slot-type bayonet structure in this utility model.

[0015] Figure 4 This is a schematic diagram of the arc-shaped steel plate unit in this utility model. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0017] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0018] like Figure 1-4 As shown, a preferred embodiment of this utility model provides a modular steel casing for supporting municipal working wells, comprising at least two arc-shaped steel plate units 1, with adjacent arc-shaped steel plate units 1 sequentially spliced ​​together to form a cylindrical structure; each arc-shaped steel plate unit 1 has a slot-type latch structure 2 at both ends, and adjacent arc-shaped steel plate units 1 are connected to each other by the slot-type latch structure 2 at the ends, so as to realize the detachable fixing between each arc-shaped steel plate unit 1.

[0019] In the above technical solution, the steel casing is assembled from multiple arc-shaped steel plate units 1, which can adapt to the support requirements of working wells with different diameters. Compared with integral steel casings, it is more convenient to transport, and the number of arc-shaped steel plate units 1 can be flexibly adjusted according to the actual situation of the working well site. The detachable fixing method of the slot-type bayonet structure 2 makes the installation and disassembly of the steel casing simple and efficient, reducing construction time and labor costs. Furthermore, the steel casing can be recycled after use, reducing the material cost of the project.

[0020] In another technical solution, at least one of the arc-shaped steel plate units 1 has a door-shaped opening 3 on its side wall for pipes to pass through and connect.

[0021] In the above technical solution, the U-shaped opening 3 provides a channel for the pipe 4 to pass through the steel casing, eliminating the need for additional drilling or other operations on the steel casing after its installation, thus reducing damage to the steel casing structure and ensuring the support strength of the steel casing.

[0022] In another technical solution, the number of the arc-shaped steel plate units 1 is 2, 3 or 4 pieces, and the curvature of each arc-shaped steel plate unit 1 is adapted to each other, forming a complete circular cylindrical structure after splicing.

[0023] In the above technical solution, the number of arc-shaped steel plate units 1 is limited to 2, 3 or 4 pieces, and the curvature of each unit is matched, making the assembly of the steel casing more standardized and convenient. During the construction process, the workers do not need to spend too much time adjusting the position and angle of each unit, thus improving the assembly efficiency.

[0024] In another technical solution, when the number of the arc-shaped steel plate units 1 is 4, each of the arc-shaped steel plate units 1 is a 90° arc-shaped steel plate, and at least two of the 90° arc-shaped steel plates are respectively provided with at least one U-shaped opening 3 for pipe access and out.

[0025] In the above technical solution, the design of four 90° arc-shaped steel plates ensures that the size of each arc-shaped steel plate is not too large, and the number of arc-shaped steel plates is also appropriate, facilitating mass production and construction installation. The U-shaped openings 3 on at least two arc-shaped steel plates are used for pipe access and exit, respectively, ensuring smooth connection of pipes inside and outside the steel casing.

[0026] In another technical solution, the slot-type bayonet structure 2 includes a protrusion 2-1 at one end of the arc-shaped steel plate unit 1 and a groove 2-2 at the other end that is adapted to the protrusion 2-1; in two adjacent arc-shaped steel plate units 1, the protrusion 2-1 of one arc-shaped steel plate unit 1 is embedded in the groove 2-2 of the other arc-shaped steel plate unit 1 to form a convex-concave interlocking connection structure. The cross-section of the protrusion 2-1 is rectangular, and the cross-sectional shape of the groove 2-2 is consistent with the cross-sectional shape of the protrusion 2-1.

[0027] In the above technical solution, when assembling two adjacent arc-shaped steel plate units 1, the protrusion 2-1 of one arc-shaped steel plate unit 1 is aligned with the groove 2-2 of the other arc-shaped steel plate unit 1. Then, a certain pushing force is applied along the contact direction of the two, causing the protrusion 2-1 to gradually embed into the groove 2-2 until the protrusion 2-1 is completely inserted into the groove 2-2. At this point, the two form a convex-concave interlocking connection structure, thus fixing the adjacent arc-shaped steel plate units 1. During disassembly, a pulling force in the opposite direction is applied, causing the protrusion 2-1 to disengage from the groove 2-2. This slot-type bayonet structure 2 achieves a detachable fixed connection between adjacent arc-shaped steel plate units 1. The connection process does not require the use of additional connectors, such as bolts and nuts, reducing material costs and installation steps, and improving construction efficiency. The rectangular cross-section design ensures the structural strength after connection, effectively resisting the pressure around the working well and preventing the steel casing from loosening or deforming during use.

[0028] In another technical solution, each of the aforementioned arc-shaped steel plate units 1 is formed by splicing together at least two segments of arc-shaped steel plates 1-1;

[0029] For any two adjacent sub-arc steel plates, the top of the lower sub-arc steel plate is integrally bent along its arc direction to form two U-shaped guide grooves 1-2, which extend along the height direction. The bottom of the upper sub-arc steel plate corresponds to the position of the U-shaped guide grooves and is integrally bent to form a matching U-shaped edge 1-3. The U-shaped edge 1-3 is embedded in the U-shaped guide grooves 1-2 to form a guide structure that can slide up and down. Through holes are opened on the side walls of two adjacent sub-arc steel plates. When the upper and lower sub-arc steel plates are adjusted to the target height, the corresponding through holes are aligned and locking pins are inserted.

[0030] In the above technical solution, based on the actual depth requirements of the working well, the upper sub-arc steel plate 1-1 is pushed to slide along the U-shaped guide groove 1-2. After adjusting to the target height, the through holes of the upper and lower sub-arc steel plates are observed. When the through holes of the two are completely aligned, the locking pin is inserted from one through hole until the locking pin passes through both through holes and extends from the other side. At this time, the locking pin restricts the relative sliding of the upper and lower sub-arc steel plates through its own rod, thus completing the height fixation of the arc-shaped steel plate unit 1. If the height needs to be adjusted later, simply pull out the locking pin and repeat the above sliding and pin insertion steps.

[0031] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A modular steel casing for supporting municipal working wells, characterized in that, It includes at least two arc-shaped steel plate units, and two adjacent arc-shaped steel plate units are spliced ​​together to form a cylindrical structure; each arc-shaped steel plate unit has a slot-type bayonet structure at both ends, and two adjacent arc-shaped steel plate units are connected to each other by the slot-type bayonet structure at the ends, so as to realize the detachable fixation between each arc-shaped steel plate unit.

2. The prefabricated steel casing for supporting municipal working wells according to claim 1, characterized in that, At least one of the arc-shaped steel plate units has a U-shaped opening on its side wall for pipes to pass through and connect.

3. The prefabricated steel casing for supporting municipal working wells according to claim 2, characterized in that, The number of arc-shaped steel plate units is 2, 3 or 4 pieces, and the curvature of each arc-shaped steel plate unit is adapted to each other, forming a complete circular cylindrical structure after splicing.

4. The prefabricated steel casing for supporting municipal working wells according to claim 3, characterized in that, When the number of the arc-shaped steel plate units is 4, each arc-shaped steel plate unit is a 90° arc-shaped steel plate, and at least two of the 90° arc-shaped steel plates are respectively provided with at least one U-shaped opening for pipe access and exit.

5. The prefabricated steel casing for supporting municipal working wells according to claim 1, characterized in that, The slot-type bayonet structure includes a protrusion at one end of the arc-shaped steel plate unit and a groove at the other end that is adapted to the protrusion; in two adjacent arc-shaped steel plate units, the protrusion of one arc-shaped steel plate unit is embedded in the groove of the other arc-shaped steel plate unit to form a convex-concave interlocking connection structure.

6. The prefabricated steel casing for supporting municipal working wells according to claim 1, characterized in that, Each of the aforementioned arc-shaped steel plate units is composed of at least two arc-shaped steel plate segments spliced ​​together; For any two adjacent sub-arc steel plates, the top of the lower sub-arc steel plate is integrally bent along its arc direction to form two U-shaped guide grooves, which extend along the height direction. The bottom of the upper sub-arc steel plate is integrally bent to form a matching U-shaped edge, which is embedded in the U-shaped guide groove to form a guide structure that can slide up and down. Through holes are opened on the side walls of two adjacent sub-arc steel plates. When the upper and lower sub-arc steel plates are adjusted to the target height, the corresponding through holes are aligned and locking pins are inserted.

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