Buckle fixing type recoverable pile foundation drilling steel casing

Abstract

The utility model relates to the technical field of building pile foundation construction, and discloses a buckle fixing type recoverable pile foundation drilling steel casing which comprises a first casing body, a buckle assembly is installed in the first casing body, a second casing body is arranged on the top of the first casing body, and a protection supporting pipe is connected to the outer side of the first casing body and the outer side of the second casing body in a sliding mode. A fixing assembly is installed on the side face of the protection supporting pipe. And the buckle assembly comprises a butt joint plate, the butt joint plate is fixedly connected to the interior of the first pile casing, a fixing plate is fixedly connected to the interior of the first pile casing, and a spring telescopic rod is fixedly connected to the top of the fixing plate. According to the steel casing butt joint device, the first clamping block on the second casing slides into the butt joint plate and is rotated to be aligned with the first clamping groove, the spring telescopic rod exerts pressure on the pressing plate, the first clamping block is clamped into the first clamping groove, rapid butt joint of the steel casing is achieved, meanwhile, welding smoke is avoided, and the construction requirements for green construction and energy conservation and environmental protection are met.

Description

Technical Field

[0001] This utility model relates to the field of building pile foundation construction technology, and in particular to a snap-locking type recyclable pile foundation drilling steel casing. Background Technology

[0002] Piling is an important process in building foundation construction. It is mainly used to drill holes of a certain depth and diameter in the ground so that concrete can be poured in to form piles that can bear the load of the superstructure. Common methods include rotary drilling, impact drilling and slewing drilling, which are suitable for different geological conditions. Before construction, the geology must be investigated to ensure that the verticality, diameter and depth of the borehole meet the design requirements. The quality of drilling is directly related to the stability of the pile foundation and the safety of the building.

[0003] Steel casing is an important tool for protecting the quality of drilled holes. It is usually placed at the hole opening and its main functions are to prevent the hole opening from collapsing, isolate surface water from seeping in, and provide guidance to ensure the verticality of the drill hole. Steel casing is generally made of rolled steel plate, which has high strength and rigidity and can be reused. In soft soil or strata with high water table, casing is particularly critical, as it helps to stabilize the hole wall, improve construction efficiency, and ensure the quality of subsequent cast-in-place piles.

[0004] Existing steel casings can effectively prevent borehole collapse, isolate surface water infiltration, and serve as guides to ensure borehole verticality. However, the current common practice is to weld steel casings together, which is not only cumbersome and time-consuming, but also generates welding fumes, causing environmental pollution and failing to meet the requirements of green construction and energy conservation. Therefore, a snap-locking type recyclable pile foundation drilling steel casing is proposed to solve the above problems. Summary of the Invention

[0005] To overcome the above shortcomings, this utility model provides a snap-lock type recyclable pile foundation drilling steel casing, which aims to improve the problem of cumbersome construction and environmental pollution caused by welding steel casing in the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A snap-locking type recyclable pile foundation drilling steel casing includes a casing one, a snap-locking assembly installed inside the casing one, a casing two provided on the top of the casing one, a protective support tube slidably connected to the outer sides of the casing one and the casing two, and a fixing assembly installed on the side of the protective support tube; the snap-locking assembly includes a connecting plate, the connecting plate being fixedly connected inside the casing one, a fixing plate being fixedly connected inside the casing one, a spring telescopic rod being fixedly connected to the top of the fixing plate, a pressure plate being fixedly connected to the end of the spring telescopic rod, and a locking block one being fixedly connected to the side of the casing two;

[0008] As a further description of the above technical solution:

[0009] The inside of the docking plate has a sliding groove and a locking slot. The locking block is slidably connected inside the sliding groove, and the locking block and the locking slot are engaged with each other.

[0010] As a further description of the above technical solution:

[0011] The fixing component includes a connecting plate, which is fixedly connected to the side of the protective support tube. A sliding rod is slidably connected to the inside of the protective support tube. One end of the sliding rod is fixedly connected to a second locking block, and the other end of the sliding rod is rotatably connected to a rotating trigger. A baffle is fixedly connected to the side of the connecting plate, and the sliding rod is slidably connected to the inside of the baffle.

[0012] As a further description of the above technical solution:

[0013] A telescopic spring is sleeved around the outer periphery of the slide rod, and the telescopic spring is disposed between the second locking block and the baffle.

[0014] As a further description of the above technical solution:

[0015] The outer side of the second protective sleeve is provided with a second slot, and the second locking block is engaged with the second slot.

[0016] As a further description of the above technical solution:

[0017] The rotary trigger has a limiting groove inside, and the slide rod is rotatably connected inside the limiting groove.

[0018] As a further description of the above technical solution:

[0019] A positioning block is fixedly connected to the inner side of the protective support tube, and a positioning groove is opened on the outer side of the first protective sleeve. The positioning block is slidably connected inside the positioning groove.

[0020] As a further description of the above technical solution:

[0021] The bottom of the second protective sleeve is fixedly connected to a protective tube, which is located inside the docking plate, the fixing plate, and the pressure plate.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the locking block one of the second casing is slid into the groove of the first casing and rotated to align with the first groove, so that the locking block one is automatically locked under the action of the spring telescopic rod and the pressure plate, realizing the rapid splicing and stable connection between steel casings, eliminating the traditional welding process, significantly improving installation efficiency, avoiding welding fume pollution, and helping to achieve green construction and energy conservation and environmental protection goals.

[0024] 2. In this utility model, after the protective support pipe is sleeved on the outside of the first and second protective casings, the sliding rod and the second locking block are moved inward by rotating the trigger, and are locked into the second locking groove under the pressure of the telescopic spring, so as to realize the secure locking of the protective support pipe and the steel casing, forming an auxiliary support structure, dispersing the vertical load of the casing, effectively preventing the casing from sinking or tilting due to the soft foundation, and ensuring the stability of construction and the quality of hole formation. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a snap-locking type recyclable pile foundation drilling steel casing proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the connecting casing two of the snap-fit ​​type recyclable pile foundation drilling steel casing proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the connecting plate of a snap-fit ​​type recyclable pile foundation drilling steel casing proposed in this utility model;

[0028] Figure 4 This is a schematic diagram of the structure of a spring telescopic rod for a snap-lock type recyclable pile foundation drilling steel casing proposed in this utility model;

[0029] Figure 5 This is a schematic diagram of the connecting plate of a snap-fit ​​type recyclable pile foundation drilling steel casing proposed in this utility model. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 1 , Figure 3 and Figure 4This utility model provides an embodiment of a snap-lock type recyclable pile foundation drilling steel casing, including a casing 1, a snap-lock assembly installed inside the casing 1, a casing 2 at the top of the casing 1, a protective support tube 3 slidably connected to the outer sides of the casing 1 and the casing 2, and a fixing assembly installed on the side of the protective support tube 3; the snap-lock assembly includes a mating plate 4, which is fixedly connected inside the casing 1 and used to connect various structures; a fixing plate 5 is fixedly connected inside the casing 1, a spring telescopic rod 6 is fixedly connected to the top of the fixing plate 5 and used to fix the position of the spring telescopic rod 6; a pressure plate 7 is fixedly connected to the end of the spring telescopic rod 6; and a locking block 8 is fixedly connected to the side of the casing 2. The pressure generated by the cooperation between the spring telescopic rod 6 and the fixing plate 5 causes the pressure plate 7 to move towards the mating plate 4. The inside of the docking plate 4 has a sliding groove 9 and a slot 10. The slot 8 is slidably connected inside the sliding groove 9. The slot 8 enters the docking plate 4 from the sliding groove 9. The slot 8 and the slot 10 are engaged with each other. The pressure plate 7 moves towards the docking plate 4 and presses the slot 8 into the slot 10.

[0032] Reference Figure 1 , Figure 2 and Figure 5 The fixing assembly includes a connecting plate 12, which is fixedly connected to the side of the protective support tube 3. The connecting plate 12 connects various structures. A sliding rod 13 is slidably connected between the connecting plate 12 and the inside of the protective support tube 3. One end of the sliding rod 13 is fixedly connected to a locking block 14, and the other end of the sliding rod 13 is rotatably connected to a rotating trigger 15. By pulling the rotating trigger 15, the sliding rod 13 moves along with the locking block 14. A baffle 16 is fixedly connected to the side of the connecting plate 12, and the sliding rod 13 is slidably connected inside the baffle 16, which protects the internal structure of the connecting plate 12. A telescopic spring 17 is sleeved on the outer periphery of the sliding rod 13. The telescopic spring 17 is positioned between the locking block 14 and the baffle 16. The pressure generated by the interaction between the telescopic spring 17 and the baffle 16 causes the locking block 14 to move inward. The outer side of the second sleeve 2 is provided with a slot 2 18, and the second block 2 14 is engaged with the slot 2 18. The second block 2 14 moves inward and is engaged into the inside of the slot 2 18.

[0033] Reference Figure 3 and Figure 5The rotary trigger 15 has a limiting groove 19 inside, and the slide rod 13 is rotatably connected inside the limiting groove 19. By setting the limiting groove 19, the rotation position of the rotary trigger 15 is limited. A positioning block 20 is fixedly connected to the inner side of the protective support tube 3, and a positioning groove 21 is opened on the outer side of the first protective tube 1. The positioning block 20 is slidably connected inside the positioning groove 21. The connection position of the protective support tube 3 is fixed by the cooperation between the positioning block 20 and the positioning groove 21. A protective tube 11 is fixedly connected to the bottom of the second protective tube 2. The protective tube 11 is set inside the docking plate 4, the fixing plate 5 and the pressure plate 7. The protective tube 11 is used to protect the outer structure and prevent the structure from being damaged during operation.

[0034] Working principle: The locking block 8 of the second sleeve 2 slides into the groove 9 of the connecting plate 4 in the first sleeve 1, so that the locking block 8 presses against the pressure plate 7. Then, the second sleeve 2 is rotated so that the locking block 8 is aligned with the groove 10. With the help of the pressure applied by the spring telescopic rod 6 to the pressure plate 7, the pressure plate 7 is moved in opposite directions, pressing the locking block 8 into the groove 10, thus completing the quick connection between the first sleeve 1 and the second sleeve 2. This improves the efficiency of the connection work, reduces the fumes generated during welding, and is conducive to green construction and energy conservation and environmental protection requirements. The second sleeve 2 and the locking block 8 are moved downward so that the locking block 8 is disengaged from the groove 10. Then, the second sleeve 2 is rotated so that the locking block 8 slides out of the groove 9, thus removing the connection between the first sleeve 1 and the second sleeve 2.

[0035] The protective support pipe 3 is placed on the outside of the second casing 2 and the first casing 1, with the bottom of the protective support pipe 3 placed on the ground. Then, the rotating trigger 15 is pulled, and the pressure applied to the second locking block 14 by the telescopic spring 17 causes the sliding rod 13 and the second locking block 14 to move inward. The second locking block 14 moves and locks into the second locking groove 18, fixing the relative position of the protective support pipe 3 and the second casing 2. This effectively disperses the vertical pressure of the steel casing and prevents the casing from sinking, tilting, or even becoming unstable due to soft foundation, settlement, or construction disturbance, thus improving the construction quality.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A snap-locking type recyclable pile foundation drilling steel casing, comprising a casing one (1), characterized in that: The inside of the first protective sleeve (1) is equipped with a buckle assembly, and the top of the first protective sleeve (1) is provided with a second protective sleeve (2). The outer sides of the first protective sleeve (1) and the second protective sleeve (2) are slidably connected with a protective support tube (3), and a fixing assembly is installed on the side of the protective support tube (3). The buckle assembly includes a docking plate (4), which is fixedly connected inside the first protective sleeve (1). A fixing plate (5) is fixedly connected inside the first protective sleeve (1). A spring telescopic rod (6) is fixedly connected to the top of the fixing plate (5). A pressure plate (7) is fixedly connected to the end of the spring telescopic rod (6). A locking block (8) is fixedly connected to the side of the second protective sleeve (2).

2. The snap-locking type recyclable pile foundation drilling steel casing according to claim 1, characterized in that: The inside of the docking plate (4) has a sliding groove (9) and a slot one (10). The slot one (8) is slidably connected inside the sliding groove (9), and the slot one (8) and the slot one (10) are engaged with each other.

3. The snap-locking type recyclable pile foundation drilling steel casing according to claim 1, characterized in that: The fixing assembly includes a connecting plate (12), which is fixedly connected to the side of the protective support tube (3). A sliding rod (13) is slidably connected between the connecting plate (12) and the inside of the protective support tube (3). A second locking block (14) is fixedly connected to one end of the sliding rod (13), and a rotating trigger (15) is rotatably connected to the other end of the sliding rod (13). A baffle (16) is fixedly connected to the side of the connecting plate (12), and the sliding rod (13) is slidably connected inside the baffle (16).

4. A snap-locking type recyclable pile foundation drilling steel casing according to claim 3, characterized in that: A telescopic spring (17) is sleeved on the outer periphery of the slide bar (13), and the telescopic spring (17) is disposed between the second locking block (14) and the baffle (16).

5. A snap-locking type recyclable pile foundation drilling steel casing according to claim 3, characterized in that: The outer side of the second sleeve (2) is provided with a second slot (18), and the second block (14) is engaged with the second slot (18).

6. A snap-locking type recyclable pile foundation drilling steel casing according to claim 3, characterized in that: The rotating trigger (15) has a limiting groove (19) inside, and the slide rod (13) is rotatably connected inside the limiting groove (19).

7. A snap-locking type recyclable pile foundation drilling steel casing according to claim 1, characterized in that: The inner side of the protective support tube (3) is fixedly connected to a positioning block (20), and the outer side of the protective sleeve (1) is provided with a positioning groove (21). The positioning block (20) is slidably connected inside the positioning groove (21).

8. A snap-fit ​​type recyclable pile foundation drilling steel casing according to claim 1, characterized in that: The bottom of the second protective sleeve (2) is fixedly connected to a protective tube (11), which is located inside the docking plate (4), the fixing plate (5) and the pressure plate (7).

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