Foundation pit supporting cast-in-place pile casing device

Abstract

The utility model relates to the technical field of foundation pit supporting, in particular to a foundation pit supporting cast-in-place pile casing device which comprises a first casing and a second casing which are connected together in a clamped mode, the first casing comprises a casing body, four sliding grooves are formed in the outer surface of the casing body at equal intervals, and limiting grooves are formed in one sides of the inner walls of the four sliding grooves. A connecting ring is fixedly connected to the top end of the barrel, four limiting rods are fixedly connected to the top end of the connecting ring at equal intervals, an extending structure is movably connected into the barrel in a penetrating and inserting mode, a connecting base is fixedly connected to the bottom end of the extending structure, four penetrating grooves are formed in the top end of the connecting base at equal intervals, and four limiting blocks are fixedly connected to the outer surface of the lower portion of the extending structure at equal intervals. A limiting ring is fixedly connected to the outer surface of the upper portion of the extending structure in a penetrating mode and movably connected with the barrel in a penetrating mode. Through the arrangement of the sliding groove, the limiting groove, the limiting block, the limiting rod and the penetrating groove, clamping connection between the first pile casing and the second pile casing is facilitated, and the assembling efficiency of the device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of foundation pit support, and in particular relates to a casing device for a cast-in-place pile for foundation pit support. Background Art

[0002] The foundation pit support cast-in-place pile casing is a support structure used in foundation pit projects, usually used to protect the surrounding of cast-in-place piles to ensure construction safety and support stability.

[0003] The existing patent (publication number: CN220468871U) discloses a casing device for foundation pit support cast-in-place piles, which includes two cylinders, which are butted in sequence from top to bottom, the lower end of the cylinder is coaxially sleeved and welded with a first fixing ring, the lower side of the first fixing ring is welded with a positioning block, the upper end of the cylinder is coaxially sleeved and welded with a second fixing ring, and the upper side of the second fixing ring is provided with a positioning groove. Although the device can guide the approach between the two cylinders through the mutual cooperation of the positioning block and the positioning groove, thereby ensuring the quality of the connection between the two cylinders, when the device is used, it is necessary to always pay attention to the positions of the positioning groove and the positioning block during the upper and lower butt jointing process, which is relatively cumbersome during the butt jointing process, resulting in low butt jointing efficiency between the devices;

[0004] In addition, since the bored pile casing is used to protect the formwork structure during the bored pile construction process, once the concrete pouring is completed and solidified, the casing itself usually does not need to be removed. The casing will remain underground as part of the permanent support structure. However, the existing casing welding is unstable and is easily damaged after long-term use, resulting in unstable bottom foundation and affecting the overall quality of the building. Utility Model Content

[0005] The utility model aims to provide a casing device for a foundation pit supporting cast-in-place pile to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A casing device for cast-in-place piles supporting a foundation pit comprises a first casing and a second casing: the first casing and the second casing are clamped together, the first casing comprises a cylinder body, the outer surface of the cylinder body is provided with four slide grooves at equal distances, and one side of the inner wall of the four slide grooves is provided with a limiting groove, the top end of the cylinder body is fixedly connected to a connecting ring, the top end of the connecting ring is fixedly connected to four limiting rods at equal distances, an extension structure is movably inserted and connected in the cylinder body, the bottom end of the extension structure is fixedly connected to a connecting seat, the top end of the connecting seat is provided with four through grooves at equal distances, four limiting blocks are fixedly connected to the lower outer surface of the extension structure at equal distances, the upper outer surface of the extension structure is fixedly inserted and connected to the limiting ring, and the limiting ring is movably inserted and connected to the cylinder body.

[0008] Preferably, the extension structure includes a fixed cylinder, an insertion hole, an insertion rod and an extension cylinder, and the insertion holes and the insertion rods are each provided with six, and the six insertion holes are evenly spaced at the bottom end of the fixed cylinder, the six insertion rods are evenly spaced and fixedly connected to the top end of the extension cylinder, the end of the insertion rod away from the extension cylinder is movably inserted in the insertion hole, a spring is fixedly connected between the insertion rod and the insertion hole, and the fixed cylinder is fixedly inserted in the cylinder body.

[0009] Preferably, the extension tube is fixedly connected to four limit blocks, the bottom end of the extension tube is fixedly connected to the top end of the connecting seat, and the extension tube is movably inserted and connected in the cylinder body.

[0010] Preferably, the limiting rods are all configured as inverted L-shaped structures.

[0011] Preferably, the four limit blocks are movably connected in the four sliding grooves respectively.

[0012] Preferably, the first protective tube and the second protective tube have the same structure and are connected in the same manner.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] (1) By setting a sliding groove, a limiting groove, a limiting block, a limiting rod and a through groove, by aligning the second protective tube with the first protective tube, the four limiting rods on the second protective tube are respectively inserted into the four through grooves on the first protective tube, and the extension structure on the first protective tube is rotated to rotate the connecting seat on the first protective tube, so that the through groove and the limiting rod are engaged, and the limiting block is inserted in the limiting groove for limiting, so that the second protective tube and the first protective tube can be quickly assembled, and the device does not need to be fixed by screws and bolts, thereby improving the assembly efficiency.

[0015] (2) By setting an extension structure, during the downward movement of the second casing after the second casing and the first casing are aligned, the second casing and the first casing are close to each other, pulling the connecting seat, and the connecting seat drives the extension tube to move downward, and the extension tube drives the insertion rod to slide in the insertion hole, and pulls the spring to extend the spring, so that when the limit block slides to the bottom of the slide groove, the insertion groove on the first casing and the limit rod on the second casing are inserted together, and the connecting seat is rotated, so that the extension tube drives the limit block to be inserted in the limit groove, and then the connection and clamping parts of the device are welded, thereby improving the stability between the second casing and the first casing, and utilizing the double protection of the extension structure and the cylinder body to improve the support stability of the cast-in-place pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is a three-dimensional diagram of the first casing of the utility model;

[0018] Figure 3 It is a cross-sectional view of the first casing of the utility model;

[0019] Figure 4 It is a cross-sectional view of the extended structure of the utility model;

[0020] In the figure: 1, first protective tube; 2, second protective tube; 11, cylinder body; 12, slide groove; 13, limit groove; 14, connecting ring; 15, limit rod; 16, connecting seat; 17, extension structure; 18, through groove; 19, limit block; 20, limit ring; 71, fixed tube; 72, insertion hole; 73, spring; 74, insertion rod; 75, extension tube. DETAILED DESCRIPTION

[0021] 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.

[0022] Embodiment 1:

[0023] See also Figure 1 - Figure 4 As shown, a casing device for foundation pit support cast-in-place piles comprises a first casing 1 and a second casing 2: the first casing 1 and the second casing 2 are snap-connected together, the first casing 1 comprises a cylinder body 11, the outer surface of the cylinder body 11 is provided with four slide grooves 12 at equal distances, and one side of the inner wall of the four slide grooves 12 is provided with a limiting groove 13, the top of the cylinder body 11 is fixedly connected with a connecting ring 14, the top of the connecting ring 14 is fixedly connected with four limiting rods 15 at equal distances, an extension structure 17 is movably inserted and connected in the cylinder body 11, the bottom end of the extension structure 17 is fixedly connected with a connecting seat 16, the top of the connecting seat 16 is provided with four through grooves 18 at equal distances, the outer surface of the extension structure 17 is fixedly connected with four limiting blocks 19 at equal distances, the upper outer surface of the extension structure 17 is fixedly inserted and connected with a limiting ring 20, and the limiting ring 20 is movably inserted and connected with the cylinder body 11.

[0024] Depend on Figure 1 - Figure 3 It can be seen that the limiting rods 15 are all set to an inverted L-shaped structure; the four limiting blocks 19 are movably inserted and connected in the four sliding grooves 12 respectively; the first casing 1 and the second casing 2 have the same structure and the same connection method.

[0025] As can be seen from the above, by aligning the second casing 2 and the first casing 1, the four limiting rods 15 on the second casing 2 are respectively inserted into the four through grooves 18 on the first casing 1, and the extension structure 17 on the first casing 1 is rotated to rotate the connecting seat 16 on the first casing 1, so that the inner wall of the limiting rod 15 on the second casing 2 is tightly attached to one side of the inner wall of the through groove 18 on the first casing 1 and the upper end of the connecting seat 16, and by setting the limiting rod 15 to an inverted L-shaped structure, after rotation, the through groove 18 and the limiting rod 15 are clamped, and the limiting block 19 is inserted in the limiting groove 13 for limiting, so as to avoid disengagement during use. When the extension structure 17 rotates, it will drive the limiting ring 20 to rotate in the barrel 11, and the device does not need to be fixed by screws and bolts, thereby improving assembly efficiency.

[0026] Embodiment 2:

[0027] refer to Figure 3 and Figure 4 As shown, the extension structure 17 includes a fixed cylinder 71, an insertion hole 72, an insertion rod 74 and an extension cylinder 75. There are six insertion holes 72 and six insertion rods 74, and the six insertion holes 72 are evenly spaced at the bottom end of the fixed cylinder 71. The six insertion rods 74 are evenly fixedly connected to the top end of the extension cylinder 75. One end of the insertion rod 74 away from the extension cylinder 75 is movably inserted and connected in the insertion hole 72. A spring 73 is fixedly connected between the insertion rod 74 and the insertion hole 72. The fixed cylinder 71 is fixedly inserted and connected in the cylinder body 11.

[0028] As can be seen from the above, by pulling the connecting seat 16, the connecting seat 16 drives the extension tube 75 fixedly connected thereto to move downward, and the extension tube 75 drives the insertion rod 74 fixedly connected thereto to slide in the insertion hole 72, and pulls the spring 73, so that the spring 73 extends. When the extension tube 75 moves, it will drive the limit block 19 fixedly connected thereto to slide downward in the slide groove 12. When the limit block 19 slides to the bottom of the slide groove 12, the penetration groove 18 on the first protective tube 1 and the limit rod 15 on the second protective tube 2 are inserted together, and the connecting seat 16 is rotated, so that the extension tube 75 drives the limit block 19 to rotate, and the limit block 19 is inserted in the limit groove 13, and the limit rod 15 and the limit groove 13 are used for limiting, thereby improving the assembly stability.

[0029] Preferably, the extension tube 75 is fixedly connected to the four limit blocks 19 , the bottom end of the extension tube 75 is fixedly connected to the top end of the connecting seat 16 , and the extension tube 75 is movably inserted and connected in the cylinder body 11 .

[0030] As can be seen from the above, the limit block 19 is fixedly connected to the extension tube 75, so that when the extension tube 75 moves, the limit block 19 is driven to move.

[0031] The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0032] In the description of the present utility model, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. The meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0036] In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may 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 shall be included in the protection scope of the present invention.

Claims

1. A casing device for cast-in-place piles for foundation pit support, characterized in that: The invention comprises a first protective tube (1) and a second protective tube (2): the first protective tube (1) and the second protective tube (2) are clamped together, the first protective tube (1) comprises a cylinder (11), the outer surface of the cylinder (11) is provided with four slide grooves (12) at equal distances, and one side of the inner wall of the four slide grooves (12) is provided with a limiting groove (13), the top end of the cylinder (11) is fixedly connected with a connecting ring (14), and the top end of the connecting ring (14) is fixedly connected with four limiting rods (15) at equal distances, An extension structure (17) is movably inserted and connected inside the cylinder (11); a connecting seat (16) is fixedly connected to the bottom end of the extension structure (17); four through grooves (18) are equidistantly provided on the top end of the connecting seat (16); four limit blocks (19) are fixedly connected to the lower outer surface of the extension structure (17) at equidistant intervals; a limit ring (20) is fixedly inserted and connected to the upper outer surface of the extension structure (17); and the limit ring (20) is movably inserted and connected to the cylinder (11).

2. A casing device for foundation pit support cast-in-place piles according to claim 1, characterized in that: The extension structure (17) comprises a fixed tube (71), an insertion hole (72), an insertion rod (74) and an extension tube (75). The insertion holes (72) and the insertion rod (74) are both provided with six in number, and the six insertion holes (72) are evenly spaced at the bottom end of the fixed tube (71). The six insertion rods (74) are evenly spaced and fixedly connected to the top end of the extension tube (75). One end of the insertion rod (74) away from the extension tube (75) is movably inserted and connected in the insertion hole (72). A spring (73) is fixedly connected between the insertion rod (74) and the insertion hole (72). The fixed tube (71) is fixedly inserted and connected in the cylinder body (11).

3. A casing device for foundation pit support cast-in-place piles according to claim 2, characterized in that: The extension tube (75) is fixedly connected to four limit blocks (19), the bottom end of the extension tube (75) is fixedly connected to the top end of the connection seat (16), and the extension tube (75) is movably connected in the cylinder body (11).

4. A casing device for foundation pit support cast-in-place piles according to claim 1, characterized in that: The limiting rods (15) are all configured as an inverted L-shaped structure.

5. A casing device for foundation pit support cast-in-place piles according to claim 1, characterized in that: The four limit blocks (19) are respectively movably connected in the four slide grooves (12).

6. A casing device for foundation pit support cast-in-place piles according to claim 1, characterized in that: The first protective tube (1) and the second protective tube (2) have the same structure and the same connection method.

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