Variable cross-section squeezing and expanding threaded pile drilling tool

Abstract

The utility model provides a variable cross-section squeezing and expanding threaded pile drilling tool, which relates to the technical field of constructional engineering, and comprises a drilling tool, the top of the drilling tool is fixedly connected with an expanding cylinder, the upper part of the inner side of the expanding cylinder is movably connected with a rotating cylinder, the inside of the expanding cylinder is movably connected with a telescopic plate, and the middle of the top of the drilling tool is fixedly connected with a joint. Through the arrangement of the rotating cylinder and the telescopic plate, drilling of drill holes of different sizes is facilitated, a rotating sleeve can drive a fixed cylinder to rotate by unscrewing a bolt, then a hollow gear is driven to rotate, and through forward rotation and reverse rotation of the hollow gear, a plate body can stretch out and draw back in a cylinder body; the whole diameter of the extrusion and expansion threaded pile drilling tool can be changed, drill holes of different sizes can be conveniently drilled, the resistance borne by the plate body is smaller through the fixing teeth arranged in a staggered mode, the drill holes can be gradually expanded, and it is conveniently guaranteed that the plate body cannot be damaged due to too large resistance.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, and in particular to a variable cross-section extrusion expansion threaded pile drilling tool. Background Technology

[0002] The extrusion-expanding threaded pile drill is a specialized construction equipment used to form threaded piles. It forms a pile body with threaded ribs by rotating and extruding the soil, increasing the pile-soil contact area, thereby improving the bearing capacity and pull-out resistance of the pile foundation. It is widely used in high-rise buildings, bridges, docks and other projects that require high bearing capacity pile foundations.

[0003] Existing extrusion and expansion threaded pile drilling tools have a fixed structure and a relatively simple overall structure. Their fixed cross-section structure means that they can only drill holes of a fixed size. When constructing holes of different sizes, it is necessary to change to different sized drilling tools, which is time-consuming, labor-intensive, and reduces work efficiency. Therefore, a variable cross-section extrusion and expansion threaded pile drilling tool is provided. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of the aforementioned technologies and provide a variable cross-section extrusion-expanding threaded pile drilling tool.

[0005] Therefore, this utility model provides a variable cross-section extrusion-expanding threaded pile drilling tool, including a drilling tool, an expansion cylinder fixedly connected to the top of the drilling tool, a rotating cylinder movably connected to the upper inner side of the expansion cylinder, a telescopic plate movably connected inside the expansion cylinder, a joint fixedly connected to the middle of the top of the drilling tool, the telescopic plate including a limiting post movably connected inside the expansion cylinder, a plate body fixedly connected to the inner side of the limiting post, a toothed plate fixedly connected to the side of the plate body near the rotating cylinder, and a fixing tooth fixedly connected to the outer end of the plate body.

[0006] Preferably, the drilling tool includes a drill barrel, with a helical blade fixedly connected to the outer side of the drill barrel and a drill tip fixedly connected to the lower end of the drill barrel.

[0007] Preferably, the expansion cylinder includes a cylinder body fixedly connected to the top of the drill barrel, a rotating groove is provided on the upper side of the inner side of the cylinder body, a telescopic groove is provided on the outer side of the cylinder body, and a movable groove is provided on both the upper and lower sides of the inner side of the cylinder body.

[0008] Preferably, the rotating cylinder includes a limiting sleeve movably connected to the upper side of the inner side of the cylinder, a fixed cylinder is fixedly connected to the inner side of the limiting sleeve, a hollow gear is fixedly connected to the lower part of the fixed cylinder, a rotating sleeve is fixedly connected to the upper side of the outer side of the fixed cylinder, a sealing gasket is fixedly connected to the top of the rotating sleeve and the fixed cylinder, and a bolt is threaded into the inside of the rotating sleeve.

[0009] Preferably, the outer diameter of the drill bit is the same as the outer diameter of the expansion tube.

[0010] Preferably, the fixing teeth on adjacent plates are arranged in an alternating manner.

[0011] This utility model provides a variable cross-section extrusion and expansion threaded pile drilling tool, which has the following beneficial effects:

[0012] This utility model, by incorporating a rotating cylinder and a telescopic plate, facilitates drilling holes of different sizes. By loosening the bolts, the rotating sleeve can drive the fixed cylinder to rotate, which in turn drives the hollow gear to rotate. The forward and reverse rotation of the hollow gear allows the plate to expand and contract inside the cylinder, thereby changing the overall diameter of the extrusion and expansion threaded pile drill tool, making it easier to drill holes of different sizes. Furthermore, the staggered fixed teeth reduce the resistance from the soil when the plate expands the hole, allowing for gradual expansion and preventing damage to the plate due to excessive resistance. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the cross-sectional structure of the expansion cylinder of this utility model;

[0015] Figure 3 This is a schematic diagram of the overall structure of the telescopic plate of this utility model;

[0016] Figure 4 This is a schematic diagram of the overall structure of the rotating drum of this utility model.

[0017] The markings in the diagram are: 1. Drill tool, 101. Drill barrel, 102. Spiral blade, 103. Drill tip, 2. Expansion tube, 201. Tube body, 202. Rotary groove, 203. Telescopic groove, 204. Moving groove, 3. Telescopic plate, 301. Limiting post, 302. Plate body, 303. Toothed plate, 304. Fixed tooth, 4. Rotary tube, 401. Rotating sleeve, 402. Sealing gasket, 403. Limiting sleeve, 404. Fixed tube, 405. Hollow gear, 406. Bolt, 5. Connector. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0019] Example 1:

[0020] Depend on Figures 1-4As shown, this utility model provides a variable cross-section extrusion-expanding threaded pile drilling tool, including a drilling tool 1. An expansion cylinder 2 is fixedly connected to the top of the drilling tool 1. A rotating cylinder 4 is movably connected to the upper inner side of the expansion cylinder 2. A telescopic plate 3 is movably connected inside the expansion cylinder 2. A connector 5 is fixedly connected to the middle of the top of the drilling tool 1. The telescopic plate 3 includes a limiting post 301 movably connected inside the expansion cylinder 2. The limiting post 301 restricts the movement of the plate body 302, preventing the plate body 302 from detaching from the cylinder 201. The plate body 302 is fixedly connected to the inner side of the limiting post 301. A toothed plate 303 is fixedly connected to the side of the plate body 302 near the rotating cylinder 4. A fixing tooth 304 is fixedly connected to the outer end of the plate body 302. The limiting post 301… The cross-section of the plate 302 is semi-annular. The toothed plate 303 meshes with the hollow gear 405. The drill 1 includes a drill barrel 101, with a helical blade 102 fixedly connected to the outside of the drill barrel 101. A drill tip 103 is fixedly connected to the lower end of the drill barrel 101. The expansion cylinder 2 includes a cylinder 201 fixedly connected to the top of the drill barrel 101. A rotating groove 202 is provided on the upper inner side of the cylinder 201. The rotating groove 202 is used for the rotation of the limiting sleeve 403, so that the rotating cylinder 4 can rotate stably inside the expansion cylinder 2. A telescopic groove 203 is provided on the outer side of the cylinder 201 for the passage of the plate 302. Moving grooves 204 are provided on the upper and lower sides inside the cylinder 201 for the movement of... The groove 204 is used for the movement of the limiting post 301. The rotating drum 4 includes a limiting sleeve 403 movably connected to the upper inner side of the drum body 201. A fixed cylinder 404 is fixedly connected to the inner side of the limiting sleeve 403. A hollow gear 405 is fixedly connected to the lower part of the fixed cylinder 404. A rotating sleeve 401 is fixedly connected to the upper outer side of the fixed cylinder 404. A sealing gasket 402 is fixedly connected to the top of the rotating sleeve 401 and the fixed cylinder 404. The sealing gasket 402 is used to ensure better sealing between the rotating sleeve 401 and the connector 5, and to prevent dust from entering between the rotating drum 4 and the connector 5 and affecting the rotation of the rotating drum 4. A bolt 406 is threaded inside the rotating sleeve 401. The outer diameter of the drill bit 1 is the same as the outer diameter of the expansion cylinder 2, so that the drill bit 1 After drilling into the ground, the expansion cylinder 2 can smoothly enter the borehole, and when the telescopic plate 3 extends, it can drill a larger borehole. In use, the extrusion and expansion threaded pile drill tool is installed and fixed through the connector 5, so that the drill tip 103 contacts the ground to drill a hole, and the drill cylinder 101 drives the spiral blade 102 to rotate to drill and excavate the soil, and the spiral squeezes the soil. By loosening the bolt 406, the rotating sleeve 401 can drive the fixed cylinder 404 to rotate, which in turn drives the hollow gear 405 to rotate. The forward and reverse rotation of the hollow gear 405 allows the plate 302 to expand and contract inside the cylinder 201, thereby changing the overall diameter of the extrusion and expansion threaded pile drill tool, which is convenient for drilling boreholes of different sizes.

[0021] Example 2:

[0022] Depend on Figure 3As shown, this utility model provides a variable cross-section extrusion expansion threaded pile drilling tool. The fixed teeth 304 on adjacent plates 302 are staggered. The staggered fixed teeth 304 make the plate 302 less susceptible to soil resistance when expanding the borehole, and can gradually expand the borehole, so as to ensure that the plate 302 will not be damaged due to excessive resistance.

[0023] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A variable cross-section jacked thread pile drill comprising a drill (1), characterized in that: The top of the drill (1) is fixedly connected with an expansion cylinder (2), the upper side of the inner side of the expansion cylinder (2) is movably connected with a rotating cylinder (4), the inside of the expansion cylinder (2) is movably connected with a telescopic plate (3), the middle of the top of the drill (1) is fixedly connected with a joint (5), the telescopic plate (3) comprises a limiting column (301) movably connected in the inside of the expansion cylinder (2), the inner side of the limiting column (301) is fixedly connected with a plate body (302), the side close to the rotating cylinder (4) of the plate body (302) is fixedly connected with a toothed plate (303), and the outer end of the plate body (302) is fixedly connected with a fixed tooth (304).

2. A variable cross-section expanding piling drill according to claim 1, characterized in that, The drill (1) comprises a drill cylinder (101), the outer side of the drill cylinder (101) is fixedly connected with a spiral blade (102), and the lower end of the drill cylinder (101) is fixedly connected with a drill tip (103).

3. A variable cross-section expanding piling drill according to claim 1, characterized in that, The expansion cylinder (2) comprises a cylinder body (201) fixedly connected at the top of the drill cylinder (101), the upper side of the inner side of the cylinder body (201) is provided with a rotating groove (202), the outer side of the cylinder body (201) is provided with a telescopic groove (203), and the upper side and the lower side of the inside of the cylinder body (201) are both provided with a moving groove (204).

4. A variable cross-section expanding piling drill according to claim 1, characterized in that, The rotating cylinder (4) comprises a limiting sleeve (403) movably connected on the upper side of the inner side of the cylinder body (201), the inner side of the limiting sleeve (403) is fixedly connected with a fixed cylinder (404), the lower part of the fixed cylinder (404) is fixedly connected with a hollow gear (405), the upper side of the outer side of the fixed cylinder (404) is fixedly connected with a rotating sleeve (401), the top of the rotating sleeve (401) and the fixed cylinder (404) are fixedly connected with a sealing gasket (402), and the inside of the rotating sleeve (401) is screw-connected with a bolt (406).

5. A variable cross-section expanding piling drill according to claim 1, characterized in that, The outer diameter of the drill (1) is the same as the outer diameter of the expansion cylinder (2).

6. A variable cross-section expanding piling drill according to claim 1, characterized in that, The fixed teeth (304) on the adjacent plate bodies (302) are staggered.

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