Novel bored pile casing
By introducing a second cylinder body and an insulating support into the drilled pile casing, the hole collapse problem caused by heat transfer in the permafrost layer is solved, and the pore formation rate and stability of the drilled pile are improved.
Patent Information
- Application Number
- CN202421024467.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2025-01-10
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Since the steel casing of the existing drilled piles is a single layer, it is easy to collapse the hole due to heat transfer in the frozen soil layer, reducing the porogenicity.
A new type of drilling pile guard is designed, including a first cylinder, a second cylinder and an insulating bracket. The insulating bracket is connected to both. The first cylinder is located in the second cylinder and the insulating bracket is in contact with the outside soil. , avoid heat transfer and increase gaps to fill concrete for enhanced stability.
It effectively avoids heat transfer, prevents hole collapse, and improves the pore formation rate and stability of the drilled pile.
Smart Images
Figure CN222332684U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pile driving equipment, in particular to a novel bored pile casing. Background Art
[0002] In bored cast-in-place piles, steel casings are often buried to locate the pile position to be drilled. The casing is a steel casing with a wall thickness of 10mm. When positioning the casing, first use the center of the pile as the center of the circle, and determine the position of the casing on the soil according to the casing radius. After the casing is in place, apply pressure to bury the casing about 50cm. If it is difficult to press down, you can first dig out a part of the soil at the hole position, and then place the casing underground. During the burial process, check whether the casing is vertical. If deflection is found, it should be corrected in time. The current casings are all single-layered. In the frozen soil layer, the heat generated by the drill bit in the single-layer casing is transferred to the surrounding area through the casing, which is prone to collapse, resulting in a low porosity of bored piles. Utility Model Content
[0003] In view of this, the utility model provides a novel bored pile casing, which is used to solve the problem that the casing in the prior art is single-layered and prone to collapse.
[0004] In order to achieve one or part or all of the above purposes or other purposes, the utility model proposes a novel bored pile casing, comprising a first cylinder, a second cylinder and at least one thermal insulation bracket, wherein the two ends of the thermal insulation bracket are respectively connected to the first cylinder and the second cylinder, the first cylinder is located in the second cylinder, and the axis of the first cylinder and the axis of the second cylinder are on the same straight line, and the first cylinder is used for a drilling machine to work therein.
[0005] Furthermore, both ends of the first cylinder and the second cylinder are flush.
[0006] Furthermore, one end of the thermal insulation bracket is flush with one end of the first cylinder.
[0007] Furthermore, the other end of the thermal insulation bracket protrudes out of the other end of the first cylinder to form a plug-in portion.
[0008] Furthermore, the bottom end of the plug-in portion is a sharp end.
[0009] Furthermore, the number of the thermal insulation brackets is three.
[0010] Furthermore, the gap between every two adjacent thermal insulation brackets is the same.
[0011] Furthermore, every two adjacent thermal insulation brackets, the outer wall of the first cylinder and the inner wall of the second cylinder form a filling cavity, and the filling cavity is used to be filled with concrete.
[0012] Furthermore, a gap between the first cylinder and the second cylinder is greater than a wall thickness of the first cylinder.
[0013] Furthermore, a gap between the first cylinder and the second cylinder is greater than a wall thickness of the second cylinder.
[0014] Implementing the embodiments of the present utility model will have the following beneficial effects:
[0015] After adopting the above-mentioned new bored pile casing, a second cylinder is added on the basis of the first cylinder, and the first cylinder and the second cylinder are connected through a heat-insulating bracket, and the second cylinder is in contact with the external soil, so that the heat in the first cylinder will not be transferred to the second cylinder, nor will it be transferred to the soil around the second cylinder, thereby solving the problem of the casing in the prior art being prone to collapse due to being a single layer. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0017] in:
[0018] Figure 1 1 is a cross-sectional view of a novel bored pile casing in one embodiment.
[0019] Description of reference numerals:
[0020] A first cylinder 11 , a second cylinder 12 , a heat insulation bracket 13 , and a filling chamber 14 . 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 of 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] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features.
[0024] like Figure 1 As shown, an embodiment of the utility model discloses a novel bored pile casing, comprising a first cylinder 11, a second cylinder 12 and at least one heat insulating bracket 13, wherein the two ends of the heat insulating bracket 13 are respectively connected to the first cylinder 11 and the second cylinder 12, the first cylinder 11 is located in the second cylinder 12, and the axis of the first cylinder 11 and the axis of the second cylinder 12 are on the same straight line, and the first cylinder 11 is used for a drilling machine to work therein.
[0025] A second cylinder 12 is added on the basis of the first cylinder 11, and the first cylinder 11 and the second cylinder 12 are connected through a heat-insulating bracket 13. The second cylinder 12 is in contact with the external soil, so that the heat in the first cylinder 11 will not be transferred to the second cylinder 12, nor will it be transferred to the soil around the second cylinder 12, thereby solving the problem of collapse of the casing in the prior art due to the single-layer.
[0026] In this embodiment, both ends of the first cylinder 11 and the second cylinder 12 are flush. The first cylinder 11 is sleeved in the second cylinder 12, so that the second cylinder 12 can wrap the first cylinder 11 well in the circumferential direction.
[0027] In this embodiment, one end of the heat insulating bracket 13 is flush with one end of the first cylinder 11. One end of the heat insulating bracket 13 is also flush with one end of the first cylinder 11, which can avoid collision of the heat insulating bracket 13 by external force and has the function of protecting the heat insulating bracket 13.
[0028] In this embodiment, the other end of the heat insulation bracket 13 protrudes from the other end of the first cylinder 11 to form a plug-in portion. The plug-in portion has an auxiliary function to help the first cylinder 11 to be inserted into the soil. Preferably, the bottom end of the plug-in portion is a sharp end.
[0029] In this embodiment, there are three heat-insulating brackets 13 , and the first cylinder 11 is fixed in the second cylinder 12 by the three heat-insulating brackets 13 .
[0030] In this embodiment, the gap between every two adjacent heat insulating brackets 13 is the same. The three heat insulating brackets 13 are evenly distributed, so that each of the three heat insulating brackets 13 is subjected to relatively uniform force.
[0031] In this embodiment, every two adjacent heat insulation brackets 13, the outer wall of the first cylinder 11 and the inner wall of the second cylinder 12 form a filling cavity 14, and the filling cavity 14 is used to fill concrete. In order to further increase the stability of the first cylinder 11 and the second cylinder 12, concrete can be placed in the filling cavity 14.
[0032] In this embodiment, the gap between the first cylinder 11 and the second cylinder 12 is greater than the wall thickness of the first cylinder 11. The larger the gap between the first cylinder 11 and the second cylinder 12, the better the heat insulation effect.
[0033] In this embodiment, the gap between the first cylinder 11 and the second cylinder 12 is greater than the wall thickness of the second cylinder 12. The larger the gap between the first cylinder 11 and the second cylinder 12, the better the heat insulation effect.
[0034] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.
Claims
1. A new type of bored pile casing, characterized by: It includes a first cylinder, a second cylinder and at least one heat-insulating bracket, the two ends of the heat-insulating bracket are respectively connected to the first cylinder and the second cylinder, the first cylinder is located in the second cylinder, and the axis of the first cylinder and the axis of the second cylinder are on the same straight line, and the first cylinder is used for a drilling machine to work therein.
2. The novel bored pile casing according to claim 1, characterized in that: Both ends of the first cylinder and the second cylinder are flush.
3. The novel bored pile casing according to claim 2, characterized in that: One end of the heat insulation bracket is flush with one end of the first cylinder.
4. The novel bored pile casing according to claim 3 is characterized in that: The other end of the heat insulation bracket protrudes from the other end of the first cylinder to form a plug-in portion.
5. The novel bored pile casing according to claim 4, characterized in that: The bottom end of the plug-in portion is a sharp end.
6. The novel bored pile casing according to claim 1, characterized in that: The number of the thermal insulation brackets is three.
7. The novel bored pile casing according to claim 6, characterized in that: The gap between every two adjacent thermal insulation brackets is the same.
8. The novel bored pile casing according to claim 7, characterized in that: Every two adjacent thermal insulation brackets, the outer wall of the first cylinder and the inner wall of the second cylinder form a filling cavity, and the filling cavity is used to be filled with concrete.
9. The novel bored pile casing according to claim 1, characterized in that: The gap between the first cylinder and the second cylinder is greater than the wall thickness of the first cylinder.
10. The novel bored pile casing according to claim 1, characterized in that: The gap between the first cylinder and the second cylinder is greater than the wall thickness of the second cylinder.