Combined steel casing

Abstract

The utility model relates to the technical field of piling, and discloses a combined steel casing which comprises two sets of casing bodies, two sets of symmetrically-arranged grooves are formed in the surfaces of the casing bodies, limiting rings are fixedly connected to the two ends of the casing bodies, the cross section of each limiting ring is in a right trapezoid shape, and a protection assembly is arranged outside every two adjacent sets of limiting rings in a sleeved mode. The protection assembly comprises two sets of arc-shaped plates, extrusion grooves are formed in the inner ring walls of the two sets of arc-shaped plates, one ends of the two sets of arc-shaped plates are hinged to each other, the other ends of the two sets of arc-shaped plates are fixedly connected with protruding blocks, and the two sets of protruding blocks are fixedly connected through bolts. According to the combined type steel casing, the inclined planes of the two adjacent limiting rings are extruded by tightening the bolts and the inclined planes of the extrusion grooves, so that the two limiting rings are attached more tightly, the stability and firmness of connection are improved, and the assembling efficiency of the combined type steel casing can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of piling, in particular to a combined steel casing. Background Art

[0002] Steel casing is a kind of hollow barrel with both ends made of iron sheets to protect the piles in the process of manual bored pile construction. Due to the unstable soil, it is difficult to construct reinforced concrete retaining walls, so steel retaining walls are used to protect the piles to prevent the hole from collapsing and affect the construction progress and safety. Steel casing is a circular barrel with both ends hollowed out by iron sheets according to the size of the piles.

[0003] After searching, the Chinese patent announcement number: CN219011198U discloses a combined steel casing, which has an upper protective ring and a lower protective ring installed on the outside of the connecting ring. When one of the connecting bolts becomes loose, the external protective ring can avoid the appearance of gaps at the connection of the connecting ring, thereby improving the overall safety and practicality.

[0004] When the above-mentioned combined steel casing is in use, the protective ring, the connecting ring and the lower protective ring are reinforced by multiple sets of connecting bolts. During the installation process, the connecting bolts need to be installed in sequence, which affects the assembly efficiency of the combined steel casing. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a combined steel casing, which aims to improve the problem in the prior art that the installation process of the combined steel casing requires the installation of connecting bolts in sequence, which affects the assembly efficiency of the combined steel casing.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a combined steel casing, comprising two groups of cylinders, the surface of the cylinders is provided with two groups of symmetrically arranged grooves, both ends of the cylinders are fixedly connected with limit rings, the outer sleeves of the two adjacent groups of limit rings are provided with protective components, the protective components include two groups of arc plates, the inner ring walls of the two groups of arc plates are provided with extrusion grooves, one ends of the two groups of arc plates are hinged to each other, the other ends of the two groups of arc plates are fixedly connected with protrusions, and the two groups of protrusions are fixedly connected by bolts.

[0007] As a further description of the above technical solution:

[0008] A guide groove is formed on the surface of one group of the limiting rings, and a guide ring is fixedly connected to the surface of another group of the limiting rings.

[0009] As a further description of the above technical solution:

[0010] The inner bottom surface of the guide groove is provided with a plurality of positioning holes distributed in an array, and the surface of the guide ring is fixedly connected with a plurality of positioning pins distributed in an array.

[0011] As a further description of the above technical solution:

[0012] The guide ring is plugged into the inner wall of the guide groove, and the positioning pin is plugged into the inner wall of the positioning hole.

[0013] As a further description of the above technical solution:

[0014] The cross section of the limiting ring is a right-angle trapezoid.

[0015] As a further description of the above technical solution:

[0016] The cross section of the extrusion groove is an isosceles trapezoid, and the inclined surface of the extrusion groove fits the inclined surface of the limiting ring.

[0017] The utility model has the following beneficial effects:

[0018] 1. In the utility model, by tightening the bolts, the inclined surface of the extrusion groove squeezes the inclined surfaces of the two sets of adjacent limit rings, so that the two sets of limit rings fit more closely, increasing the stability and firmness of the connection, and can improve the assembly efficiency of the combined steel casing, and the two sets of arc plates surround the outside of the limit rings, which can play a protective role.

[0019] 2. In the utility model, the end faces of the two sets of limit rings can be accurately butted together through the cooperation between the guide ring and the guide groove. The positioning pin is inserted into the interior of the positioning hole to prevent the cylinder from rotating, which helps to maintain the accuracy and stability of the entire combined steel casing and can further improve the assembly efficiency of the combined steel casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of a combined steel casing proposed by the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of a combined steel casing protection component proposed by the utility model;

[0022] Figure 3 This is a schematic diagram of one end of a combined steel casing body proposed by the utility model;

[0023] Figure 4 The utility model is a schematic diagram of the other end of a combined steel casing body.

[0024] Legend:

[0025] 1. Cylinder; 2. Groove; 3. Limiting ring; 31. Guide groove; 32. Positioning hole; 33. Guide ring; 34. Positioning pin; 4. Protective assembly; 41. Arc plate; 42. Extrusion groove; 43. Bump; 44. Bolt. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Reference Figure 1 , Figure 3 - Figure 4 The utility model provides an embodiment: a combined steel casing, including two groups of cylinders 1, which are spliced ​​end to end to form the main body of the combined steel casing, which is used to provide support and protection around bored piles. The surface of the cylinder 1 is provided with two groups of symmetrically arranged grooves 2, and both ends of the cylinder 1 are fixedly connected with limit rings 3, and the cross section of the limit rings 3 is a right-angled trapezoid. When the two groups of cylinders 1 are spliced, the two adjacent groups of limit rings 3 fit together, and the limit rings 3 with a right-angled trapezoidal cross section provide an inclined surface. When the inclined surfaces of the two groups of limit rings 3 are squeezed by external force, the two groups of limit rings 3 fit more closely, ensuring the stability between the two groups of cylinders 1.

[0028] Reference Figure 3 - Figure 4 The surface of one group of limit rings 3 is provided with a guide groove 31, and the inner bottom surface of the guide groove 31 is provided with a plurality of groups of positioning holes 32 distributed in an array, and the surface of the other group of limit rings 3 is fixedly connected with a guide ring 33, and the surface of the guide ring 33 is fixedly connected with a plurality of groups of positioning pins 34 distributed in an array, the guide ring 33 is plugged into the inner wall of the guide groove 31, and the positioning pin 34 is plugged into the inner wall of the positioning hole 32, and the guide ring 33 and the guide groove 31 cooperate with each other, so that the end faces of the two groups of limit rings 3 can be accurately docked together to prevent misalignment, and when the guide ring 33 and the guide groove 31 are plugged together, the positioning pin 34 and the positioning hole 32 are overlapped by rotating the cylinder 1, and the positioning pin 34 is inserted into the interior of the positioning hole 32, so that the cylinder 1 can be prevented from rotating, thereby helping to maintain the accuracy and stability of the entire combined steel casing.

[0029] Reference Figure 1 - Figure 2The outer sleeves of the two adjacent groups of limit rings 3 are provided with a protective component 4, which includes two groups of arc plates 41. The two groups of arc plates 41 are the main parts of the protective component 4, and their function is to provide external structural support and protection. The two groups of arc plates 41 are connected to each other by hinges, so that the protective component 4 can cooperate with the limit ring 3 and surround its outside to play a protective role. An extrusion groove 42 is provided on the inner ring wall of the two groups of arc plates 41. The cross-section of the extrusion groove 42 is an isosceles trapezoid. The inclined surface of the extrusion groove 42 fits with the inclined surface of the limiting ring 3. The extrusion groove 42 is a structure provided on the inner ring wall of the arc plate 41. The extrusion groove 42 fits with the inclined surface of the limiting ring 3, thereby ensuring the tight connection between the protective component 4 and the limiting ring 3, and also increasing the stability and firmness of the connection. One ends of the two groups of arc plates 41 are hinged to each other, and the other ends of the two groups of arc plates 41 are fixedly connected with a protrusion 43. The two groups of protrusions 43 are fixedly connected by bolts 44. By tightening the bolts 44, the inclined surface of the extrusion groove 42 squeezes the inclined surfaces of the two adjacent limiting rings 3, so that the two groups of limiting rings 3 fit more closely, thereby ensuring the stability between the two groups of cylinders 1.

[0030] Working principle: When in use, the guide ring 33 cooperates with the guide groove 31, so that the end faces of the two groups of limit rings 3 can be accurately docked together to prevent misalignment, and when the guide ring 33 and the guide groove 31 are plugged together, the cylinder 1 is rotated to make the positioning pin 34 coincide with the position of the positioning hole 32, and the positioning pin 34 is inserted into the interior of the positioning hole 32, so that the cylinder 1 can be prevented from rotating, which helps to maintain the accuracy and stability of the entire combined steel casing. By tightening the bolt 44, the inclined surface of the extrusion groove 42 squeezes the inclined surfaces of the two adjacent limit rings 3, so that the two groups of limit rings 3 fit more closely, increasing the stability and firmness of the connection, and the two groups of arc plates 41 surround the outside of the limit ring 3 to play a protective role, so that two or more groups of cylinders 1 are spliced ​​end to end, and quickly assembled to form the main body of the combined steel casing.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A combined steel casing, comprising two sets of casings (1), characterized in that: The surface of the cylinder (1) is provided with two groups of symmetrically arranged grooves (2), both ends of the cylinder (1) are fixedly connected to limit rings (3), the outer parts of the two adjacent groups of limit rings (3) are provided with protective components (4), the protective components (4) include two groups of arc plates (41), the inner ring walls of the two groups of arc plates (41) are provided with extrusion grooves (42), one ends of the two groups of arc plates (41) are hinged to each other, the other ends of the two groups of arc plates (41) are fixedly connected to protrusions (43), and the two groups of protrusions (43) are fixedly connected by bolts (44).

2. A combined steel casing according to claim 1, characterized in that: A guide groove (31) is provided on the surface of one group of the limiting rings (3), and a guide ring (33) is fixedly connected to the surface of another group of the limiting rings (3).

3. A combined steel casing according to claim 2, characterized in that: The inner bottom surface of the guide groove (31) is provided with a plurality of positioning holes (32) distributed in an array, and the surface of the guide ring (33) is fixedly connected with a plurality of positioning pins (34) distributed in an array.

4. A combined steel casing according to claim 3, characterized in that: The guide ring (33) is plugged into the inner wall of the guide groove (31), and the positioning pin (34) is plugged into the inner wall of the positioning hole (32).

5. The combined steel casing according to claim 1, characterized in that: The cross section of the limiting ring (3) is in the shape of a right-angled trapezoid.

6. The combined steel casing according to claim 1, characterized in that: The cross section of the extrusion groove (42) is in the shape of an isosceles trapezoid, and the inclined surface of the extrusion groove (42) fits the inclined surface of the limiting ring (3).

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