Percussion bit device for efficiently treating karst pile foundation
By designing a polygonal shaped lower hammer head for impact drill bit device, the problem of poor backfill effect of traditional impact drill bit heads in karst areas is solved, significantly improving the extrusion effect, reducing the occurrence of problems during construction, and ensuring the load-bearing capacity of the pile foundation.
Patent Information
- Application Number
- CN202422163264.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-09-04
AI Technical Summary
In karst areas, traditional impact drill hammer heads are difficult to effectively squeeze and insert dense backfill materials, resulting in frequent problems such as slurry leakage, collapsed holes, and string holes in pile foundation construction, and the concrete consumption is high.
An impact drilling device for efficient treatment of karst pile foundations is designed, including a lower hammer head and an upper hammer head. The lower hammer head is composed of a top cover plate, a bottom cover plate, an outer panel and an inner stiffening plate. The outer panel is surrounded by a polygonal shaped structure, and the inner stiffening plate serves as an internal support to enhance the overall strength.
This device significantly improves the extrusion effect of karst pile foundation when backfill, reduces the occurrence of slurry leakage, collapsed holes, and string holes, reduces the waste of concrete, and ensures the bearing capacity of the pile foundation.
Smart Images
Figure CN222991456U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pile foundation construction, in particular to an impact drill bit device for efficiently treating karst pile foundations. Background Art
[0002] In karst areas, the bedrock morphology is complex, there are many karst caves and they have a certain connectivity, so it will affect the stability of the bearing stratum of the pile foundation. For the above reasons, when encountering beaded or large karst caves during the pile foundation construction process, it is often necessary to backfill crushed stones and clay to fill and compact the karst caves tightly, ensuring that during the pile foundation construction process, the backfilled clay and crushed stones can form a strong protective ring, and it is not easy to have the phenomenon of hole collapse, and during the concrete pouring, it is not easy to have the phenomenon of cross-hole, so as to reduce the waste of concrete and ensure the bearing capacity of the pile foundation.
[0003] For the traditional backfill of karst pile foundations, an ordinary impact drill hammer head is used to compact the backfill materials. The impact drill hammer head generally includes a hammer rod and a plurality of hammer bodies. A plurality of hammer bodies are connected to the lower end of the hammer rod. The overall structure of the impact drill hammer head is small at the upper end and large at the lower end. Due to the limitation of its original shape, the backfill compaction effect of karst pile foundations is often poor, and there are often situations such as pile foundation slurry leakage, hole collapse, cross-hole, and large concrete consumption. Content of the Utility Model
[0004] The utility model discloses an impact drill bit device for efficiently treating karst pile foundations, which can significantly improve the compaction effect during the backfill of karst pile foundations.
[0005] To achieve the above purpose, the technical solution of the utility model is as follows:
[0006] An impact drill bit device for efficiently treating karst pile foundations, comprising:
[0007] A lower hammer head, which includes a top cover plate, a bottom cover plate, an outer peripheral panel and an inner stiffening plate. The area of the top cover plate is larger than that of the bottom cover plate. The outer peripheral panel is connected between the top cover plate and the bottom cover plate. The outer peripheral panel encloses a multi-pyramid-shaped outer impact cone that is small at the lower end and large at the upper end. An inner stiffening plate is arranged in the outer impact cone as an inner support;
[0008] An upper hammer head, whose bottom surface is connected to the top cover plate.
[0009] Preferably, the internal stiffening plates include a first internal stiffening plate and a second internal stiffening plate. The first internal stiffening plate is an isosceles trapezoid, and its two sides are respectively connected to the two opposite side edges of the outer impact cone. The second internal stiffening plate is a right trapezoid, the outer hypotenuse of which is connected to the side edge of the outer impact cone, and the inner right-angle side is connected to the middle of the first internal stiffening plate; each side edge of the outer impact cone is correspondingly connected to the internal stiffening plates one by one; the top edge of the internal stiffening plates is connected to the top cover plate, and the bottom edge is connected to the bottom cover plate.
[0010] Preferably, the side edge of the bottom cover plate is flush with the bottom side edge of the peripheral panel.
[0011] Preferably, the top cover plate protrudes from the plane surrounded by the top edge of the outer impact cone.
[0012] Preferably, the top cover plate is circular, and the bottom cover plate is polygonal, and the number of sides matches the number of the peripheral panels.
[0013] Preferably, the top cover plate, the bottom cover plate, the peripheral panel and the internal stiffening plates are all made of steel plates.
[0014] Preferably, the number of the peripheral panels is 6, or 8, or 10. More preferably, the number of the peripheral panels is 8.
[0015] Preferably, the upper hammer head includes a hammer rod and a plurality of hammer bodies. The lower end of the hammer rod is connected with a plurality of hammer bodies, and the bottom surface of the hammer body is connected to the top cover plate.
[0016] For the impact drill bit device for efficiently treating karst pile foundations described above, the present invention provides a specific usage method: when the impact drill hammer head approaches the cave roof, use a small stroke to break through the roof, and prepare mud, clay, crushed stones and sufficient water in advance; after the cave is broken through and slurry leaks, promptly backfill with clay, crushed stones and supplement the slurry. When backfilling with clay and crushed stones, replace the impact drill bit device of the present invention, and use a low stroke to impact the backfilled clay and crushed stones to squeeze and embed the backfill materials into the cave.
[0017] It has the following advantages:
[0018] (1) By adding a lower hammer head with a smaller lower end and a larger upper end on the basis of the original impact drill hammer head, when the impact drill bit device impacts downward as a whole, the lower end is more likely to be squeezed into the dense backfill materials, and continuously rotate to squeeze the dense backfill materials on its circumferential side outward, so as to fill and squeeze the cave densely, which can significantly improve the squeezing effect during the backfilling of karst pile foundations.
[0019] (2) The peripheral panel of the lower hammer head of the present utility model is formed into a multi-prism frustum shape. The multi-prism frustum structure is convenient for processing, can be welded into a one-piece form using the materials at the construction site, has strong operability, and can be reused repeatedly, saving construction costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 is a front view structural schematic diagram of an embodiment of the present utility model.
[0021] Figure 2 is Figure 1 a structural schematic diagram of the lower hammer head in the middle and below.
[0022] Figure 3 is Figure 2 a top view perspective structural schematic diagram of...
[0023] Figure 4 is Figure 3 an A-A sectional schematic diagram of...
[0024] In the figure, there are lower hammer head 100, bottom cover plate 110, peripheral panel 120, top cover plate 130, inner stiffening plate 140, first inner stiffening plate 141, second inner stiffening plate 142, upper hammer head 200, hammer rod 210, hammer body 220, and steel wire rope 300. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.
[0026] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.
[0027] In this application, unless otherwise clearly defined and limited, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0028] An impact drill bit device for efficiently processing karst pile foundations, as Figures 1-4 shown, includes a lower hammer head 100 and an upper hammer head 200, where: the lower hammer head 100 includes a top cover plate 130, a bottom cover plate 110, a peripheral panel 120, and an internal stiffening plate 140; the area of the top cover plate 130 is larger than that of the bottom cover plate 110, and the peripheral panel 120 is connected between the top cover plate 130 and the bottom cover plate 110. The peripheral panel 120 encloses a multi-pyramid-shaped outer impact cone with a smaller lower end and a larger upper end. Here, the outer impact cone described does not include the top surface and the bottom surface itself. Its top is connected to the top cover plate 130 to close its top, and its bottom is connected to the bottom cover plate 110 to close its bottom; an internal stiffening plate 140 is arranged as an internal support in the outer impact cone enclosed by the peripheral panel 120 to enhance the overall strength of the outer impact cone and prevent the outer impact cone from deforming; the upper hammer head 200, its bottom surface is connected to the top cover plate 130, and the upper hammer head 200 can use the commonly used impact drill hammer head at present. Through this upper hammer head 200, the weight and strength requirements of the impact drill bit device can be better met. In addition, for convenient hoisting, according to the conventional setting of the upper hammer head 200, a steel wire rope 300 is also connected to the top of the upper hammer head 200. This is prior art and will not be elaborated here. When processing the impact drill bit device of the present invention, first complete the production of the lower hammer head 100, and then weld the lower hammer head 100 to the bottom surface of the upper hammer head 200. It can be processed on site, is convenient to manufacture, and has a low cost. The peripheral panel 120 of the lower hammer head 100 encloses a multi-pyramid shape. The multi-pyramid structure is convenient for processing, can be welded into one piece using the materials at the construction site, has strong operability, and can be reused repeatedly, saving construction costs.
[0029] Preferably, in combination with Figure 3As shown in the figure, this embodiment provides a specific internal stiffening plate 140. The internal stiffening plate 140 includes a first internal stiffening plate 141 and a second internal stiffening plate 142. The first internal stiffening plate 141 is an isosceles trapezoid, and its two sides are respectively connected to the two opposite side edges of the outer impact cone. Here, the two opposite side edges refer to the two side edges with the farthest distance; the second internal stiffening plate 142 is a right trapezoid, the outer hypotenuse is connected to the side edge of the outer impact cone, and the inner right-angle side is connected to the middle of the first internal stiffening plate 141. That is, since the first internal stiffening plate 141 runs through and connects two of its opposite side edges, therefore, the other second internal stiffening plates 142 must be truncated at the position of the first internal stiffening plate 141, forming a right-angle side connected to the first internal stiffening plate 141, and each side edge of the outer impact cone is connected to the internal stiffening plate 140 one by one, so as to ensure that each peripheral panel 120 is evenly stressed. The top edge of the internal stiffening plate 140 is connected to the top cover plate 130, and the bottom edge is connected to the bottom cover plate 110. The internal stiffening plate 140 enables the top cover plate 130, the bottom cover plate 110, and the peripheral panel 120 to be better connected to form a whole, ensuring the overall strength of the hammer body 100.
[0030] When processing the lower hammer head 100, first place the top cover plate 130 on the ground, then place the first internal stiffening plate 141 and weld it firmly, then weld the second internal stiffening plate 142, weld the peripheral panel 120 to the top cover plate 130 and the stiffening plate 140, and finally weld the bottom cover plate 110.
[0031] Preferably, the side edge of the bottom cover plate 110 is flush with the bottom side edge of the peripheral panel 120, and its area is not less than the bottom area of the outer impact cone, which can better connect with the peripheral panel 120 and enclose the outer impact cone. It does not protrude from the bottom surface of the outer impact cone, and can better protect the connection between it and the peripheral panel 120 from being damaged when squeezing and embedding backfill materials.
[0032] Preferably, the top cover plate 130 protrudes from the plane enclosed by the top edge of the outer impact cone to better weld with the upper hammer head 200. In this embodiment, the diameter of the top cover plate 130 is 0.10 - 0.26 m longer than the longest diagonal of the top surface of the outer impact cone. The top cover plate 130 can protect the lower hammer head 100 from being damaged by the rocks falling from the top to a certain extent.
[0033] Preferably, the top cover plate 130 is circular, which can better weld with the symmetric structure of the upper hammer head 200 to ensure the overall center of gravity balance; the bottom cover plate 110 is polygonal, and the number of sides matches the number of peripheral panels 120 to exactly enclose the bottom of the outer impact cone.
[0034] Preferably, the top cover plate 130, the bottom cover plate 110, the peripheral panel 120 and the internal stiffening plate 140 are all made of steel plates. In this embodiment, the top cover plate 130, the peripheral panel 120 and the internal stiffening plate 140 are made of steel plates with a thickness of 2 cm, and the bottom cover plate 110 is made of steel plates with a thickness of 4 cm.
[0035] Preferably, the number of the peripheral panels 120 is set to be an even number so that the structures on both sides of the first internal stiffening plate 141 are symmetric and uniform. It can be set to 6 pieces, or 8 pieces, or 10 pieces. Among them, setting 8 pieces of the peripheral panels 120 is the best. In this way, the internal stiffening plate 140 has a cross shape structure, with uniform stress and easier control of processing accuracy.
[0036] Preferably, this embodiment provides a specific upper hammer head 200. The upper hammer head 200 includes a hammer rod 210 and a plurality of hammer bodies 220. A plurality of hammer bodies 220 are connected to the lower end of the hammer rod 210. The bottom surface of the hammer body 220 is connected to the top cover plate 130. The above is a common form of an impact drill bit, and a good embedding effect can be obtained in combination with the lower hammer head 100 of this embodiment.
[0037] For the above impact drill bit device for efficiently treating karst pile foundations, this embodiment provides one specific usage method: when the impact drill hammer head (such as the structure of the upper hammer head 200 described in this embodiment) approaches the cave roof, a small stroke is used to break through the roof, and mud, clay, crushed stones and sufficient water sources are prepared in advance; after the cave is broken through and slurry leaks, clay, crushed stones are backfilled in time and slurry is supplemented. When backfilling clay and crushed stones, replace the impact drill bit device of the present invention, and use a low stroke to impact the backfilled clay and crushed stones to squeeze and embed the backfill materials into the cave.
[0038] In this embodiment, by adding a lower hammer head 100 with a smaller lower end and a larger upper end on the basis of the original impact drill hammer head, compared with the original impact drill hammer head (i.e., the structure of the upper hammer head 200), when the impact drill bit device impacts downward as a whole, the lower end is easier to squeeze into the dense backfill materials, and it rotates continuously to squeeze the dense backfill materials on its periphery outward, so as to fill and squeeze the cave tightly, which can significantly improve the embedding effect during the backfilling of karst pile foundations.
Claims
1. An impact drill bit device for efficiently processing karst pile foundations, characterized in that include: The lower hammer head comprises a top cover plate, a bottom cover plate, a peripheral panel and an inner stiffening plate, wherein the top cover plate has a larger area than the bottom cover plate, the peripheral panel is connected between the top cover plate and the bottom cover plate, the peripheral panel forms a multi-prism-shaped outer impact cone with a small lower end and a large upper end, and the inner stiffening plate is arranged in the outer impact cone as an inner support; The upper hammer head has a bottom surface connected to the top cover plate.
2. The impact drill bit device for efficiently processing karst pile foundation according to claim 1 is characterized in that: The inner stiffening plate includes a first inner stiffening plate and a second inner stiffening plate. The first inner stiffening plate is an isosceles trapezoid, and both side edges are respectively connected to the two opposite side edges of the outer impact cone. The second inner stiffening plate is a right-angled trapezoid, and the outer hypotenuse is connected to the side edge of the outer impact cone, and the inner right-angled edge is connected to the middle part of the first inner stiffening plate; each side edge of the outer impact cone is connected to the inner stiffening plate one by one; the top edge of the inner stiffening plate is connected to the top cover plate, and the bottom edge is connected to the bottom cover plate.
3. The impact drill bit device for efficiently processing karst pile foundation according to claim 1 is characterized in that: The side edge of the bottom cover plate is flush with the side edge of the bottom surface of the peripheral panel.
4. The impact drill bit device for efficiently processing karst pile foundation according to claim 1 is characterized in that: The top cover plate protrudes from the plane surrounded by the top edge of the outer impact cone.
5. The impact drill bit device for efficiently processing karst pile foundation according to claim 1 is characterized in that: The top cover plate is circular, and the bottom cover plate is polygonal, with the number of sides matching the number of the peripheral panels.
6. The impact drill bit device for efficiently processing karst pile foundation according to claim 1 is characterized in that: The top cover plate, the bottom cover plate, the peripheral panel and the inner stiffening plate are all made of steel plates.
7. The impact drill bit device for efficiently processing karst pile foundation according to any one of claims 1 to 6, characterized in that: The number of the peripheral panels is 6, 8 or 10.
8. The impact drill bit device for efficiently processing karst pile foundation according to claim 7 is characterized in that: There are 8 peripheral panels.
9. The impact drill bit device for efficiently processing karst pile foundation according to claim 1 is characterized in that: The upper hammer head comprises a hammer rod and a plurality of hammer bodies, the lower end of the hammer rod is connected to the plurality of hammer bodies, and the bottom surface of the hammer body is connected to the top cover plate.