Pile core soil digging device

Abstract

The utility model discloses a foundation pit protection device for earth excavation in building construction, aims to solve the problems that in the prior art, the inner diameter of a pile core is small, the soil excavation space is limited, and the deeper the crack of a second-class pile is, the deeper the soil needing to be excavated is, and provides a pile core soil excavation device which can solve the problem that in the prior art, pile core soil excavation is difficult. The device is characterized by comprising a digging shovel, a telescopic rod and a reinforcing device, the digging shovel and one end of the telescopic rod are fixed and reinforced through the reinforcing device, the reinforcing device is arranged to reinforce the digging shovel and section adding rods, so that the section adding rods and the digging shovel are connected more firmly, and the telescopic rod comprises at least two section adding rods and an elastic telescopic device. The adjacent section adding rods are clamped and fixed through the elastic expansion pieces, section adding and shortening of the section adding rods are more convenient and faster, shortening and section adding of the section adding rods are achieved through sliding, and therefore different lengths can be adjusted to adapt to digging of different depths, the length of the rod piece can be freely adjusted according to needs, operation is easy, turnover use can be achieved, and the device is suitable for popularization and application. And wide-range popularization and application can be realized.

Description

Technical Field

[0001] The utility model relates to the excavation of the core soil of a prefabricated pipe pile, in particular to a device for excavating the core soil of a prefabricated pipe pile. Background Art

[0002] In modern construction projects, precast piles are an important basic structure and are widely used in various projects. Precast piles not only improve construction efficiency, but also reduce costs and ensure project quality. Among the many types of precast piles, pipe piles are a common form of precast piles.

[0003] Precast pipe piles are cheaper than cast-in-place piles and have a faster construction speed. Precast pipe piles are widely used in engineering fields as a common method of foundation treatment. After the precast piles are mechanically sunk into the soil layer, since the piles are hollow, the soil will block the pile core during the sinking process. In order to pour concrete into the pile core, the soil in the pile core must be dug out. Generally, compression piles require about 1m of concrete to be poured, and pull-out piles require about 3m of concrete to be poured. If it is a Class II pile, deeper concrete needs to be poured according to the location of the crack, making it more difficult to dig the soil in the pile core. In the prior art, the inner diameter of the pile core is small, which limits the space for digging the soil, and the deeper the cracks of the Class II piles, the deeper the soil that needs to be dug. Utility Model Content

[0004] In view of the deficiencies in the above-mentioned background technology, the utility model proposes a pile core soil excavation device, which solves the technical problem of the difficulty in excavating the core soil of the existing prefabricated pipe piles on the construction site in the prior art.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A pile core soil excavation device is characterized in that it includes an excavation shovel, a telescopic rod and a reinforcement device. The excavation shovel is fixed to one end of the telescopic rod and reinforced by the reinforcement device. The telescopic rod includes at least two sectioning rods. Two adjacent sectioning rods are sleeved and matched and clamped by an elastic telescopic device, thereby achieving shortening and sectioning of the device.

[0007] Furthermore, the digging shovel is a semicircular shovel, the diameter of which is smaller than the inner diameter of the prefabricated pipe pile, so that the digging shovel can be inserted into the interior of the prefabricated pipe pile and used to dig soil. The digging shovel is fixed to the adjacent segmented rod and the two sides of the digging shovel are connected and reinforced with the adjacent segmented rod through a reinforcement device.

[0008] Furthermore, the digging shovel is arranged obliquely with respect to the adjacent segmented rod, and the edge of the digging shovel is welded and fixed to the adjacent segmented rod. The digging shovel and the adjacent segmented rod are arranged obliquely with respect to each other so that the connection between the two is more stable and more firm.

[0009] Furthermore, the segmented rod is a hollow slender rod and its cross-section is a quasi-circular shape with concave sides. This type of circle is a circle, but the two sides are concave to form a quasi-circular shape similar to a circle. The concave part of the segmented rod forms a groove, and the adjacent two segmented rods are slidably fitted through the groove, so that each segmented rod can slide along the fixed track and cannot rotate.

[0010] Furthermore, the length of each segmented rod is 1-3 m and the wall thickness is 0.5-2 mm, which facilitates the sleeve matching between the segmented rods and makes the sliding between the segmented rods smooth and stable.

[0011] Furthermore, the elastic retractor includes a spring and a button. A mounting hole is provided at one end of the segmented rod. A spring is embedded in the mounting hole and a button is inserted therein. One end of the button is connected to the spring and the other end contacts the extended segmented rod. When the button corresponds to the hole on the other segmented rod, the button will automatically pop out to fix the segmented rod. After fixing, the segmentation is completed, thereby adapting to excavation at different depths.

[0012] Furthermore, the button is a cap-shaped button with a spring connected inside. When adding a section, it automatically pops out and is fixed when it encounters a hole at the other end of the section adding rod. When the section adding is completed, the section adding rod can be shortened by pressing the elastic retractor when shortening is required.

[0013] Furthermore, the button is a cylindrical button with a spring connected inside. When adding a section, it automatically pops out and is fixed when it encounters a hole at the other end of the section adding rod. When the section adding is completed, the section adding rod can be shortened by pressing the elastic retractor when shortening is required.

[0014] Furthermore, the button is a spherical button with a spring connected to its surface. When adding a section, the button automatically pops out and is fixed when it encounters a hole at the other end of the sectioning rod. When the sectioning is completed, the sectioning rod can be shortened by pressing the elastic retractor when shortening is required.

[0015] Furthermore, the reinforcement device is a fixed rib, which is symmetrically arranged between the digging shovel and the adjacent segmented rod and fixed by welding, so that the connection between the digging shovel and the adjacent segmented rod is more stable and firm, allowing the digging process to proceed smoothly.

[0016] The beneficial effects of the utility model are:

[0017] The device can solve the problem of difficulty in digging out the soil in the pile core. The utility model digs the soil in the pile core by arranging an excavating shovel. The arranged sectioning rod can be adjusted to different lengths to adapt to digging at different depths. A reinforcement device is arranged to reinforce the excavating shovel and the sectioning rod, so that the connection between the sectioning rod and the excavating shovel is more firm. A spring retractor is arranged to make the sectioning rod more convenient and quick when adding sections and shortening sections. The device can freely adjust the length of the rod according to needs, is simple to operate, can be used in a turnover manner, and can be widely promoted and used. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a front view of the utility model;

[0020] Figure 2 It is a side view of the utility model;

[0021] Figure 3 This is a cross-sectional view of the utility model with a sectioned rod;

[0022] Figure 4 It is a schematic diagram of the elastic retractor of the utility model;

[0023] In the figure: 1. Digging shovel; 2. Fixing ribs; 3. Sectioning rod; 4. Elastic expander; 5. Spring; 6. Button. DETAILED DESCRIPTION

[0024] 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.

[0025] Embodiment 1, in this embodiment, as Figure 1 , Figure 2 , Figure 3 As shown, a pile core soil excavation device includes an excavation shovel 1, a telescopic rod and a reinforcement device. The excavation shovel 1 is fixed to one end of the telescopic rod and reinforced by the reinforcement device to ensure the firmness of the connection between the excavation shovel 1 and the telescopic rod. The telescopic rod includes at least two segmented rods 3, and two adjacent segmented rods 3 are sleeved and matched and clamped by an elastic telescopic device 4. The number of segmented rods 3 is selected according to needs, preferably 3 to 5, and the working depth of the excavation shovel 1 is changed by extending and retracting the telescopic rod.

[0026] On the basis of the above-mentioned embodiment, as a preferred embodiment, the digging shovel 1 is a semicircular shovel, the diameter of the semicircular shovel is smaller than the inner diameter of the prefabricated pipe pile, the thickness is 2mm, and the material can be iron. The digging shovel 1 is fixed to the adjacent segmented rod 3 and the two sides of the digging shovel 1 are connected and reinforced with the adjacent segmented rod 3 through a reinforcement device.

[0027] On the basis of the above-mentioned embodiment, as a preferred embodiment, the digging shovel 1 and the adjacent segmented rod 3 are arranged at an angle, and the edge of the digging shovel 1 is welded and fixed to the adjacent segmented rod 3, so that excavation is more labor-saving. At the same time, the connection between the digging shovel 1 and the segmented rod 3 is more stable, forming a whole, which is convenient for digging.

[0028] Based on the above implementation, as a preferred implementation, Figure 3 As shown, the sectioned rod 3 is a hollow slender rod and its cross-section is a quasi-circular shape with concave sides. This type of circle is a circle, but the two sides are concave to form a quasi-circular shape similar to a circle. The length of each section of the sectioned rod is 2m, the wall thickness is 1mm, and the material can be iron. The concave part of the sectioned rod 3 forms a groove, and the adjacent two sectioned rods 3 are slidably matched through the groove. Each section of the sectioned rod 3 slides along a fixed track and cannot rotate, so that the sliding between the sectioned rods 3 is stable, and shortening and adding sections can be achieved more conveniently and quickly.

[0029] On the basis of the above-mentioned implementation manner, as a preferred implementation manner, the length of each segmented rod 3 is 1-3 m and the wall thickness is 0.5-2 mm, so as to facilitate the sleeve fitting between the segmented rods 3 and make the sliding between the segmented rods 3 smooth and stable.

[0030] Embodiment 2 is further optimized on the basis of embodiment 1. In this embodiment, Figure 4 As shown, the elastic retractor 4 includes a spring 5 and a button 6. A mounting hole is provided at one end of the segmented rod 3. The spring 5 is embedded in the mounting hole and the button 6 is inserted therein. One end of the button 6 is connected to the spring 5 and the other end contacts the extended segmented rod 3. When the button 6 corresponds to the hole on the other segmented rod 3, the button 6 will automatically pop out to fix the segmented rod 3.

[0031] Embodiment 3 is further optimized on the basis of embodiments 1 and 2. The button 6 is a cap-shaped button, and a spring 5 is connected inside the cap-shaped button. When adding a section, it automatically pops out when encountering a hole in another adding section rod 3. When shortening, pressing the cap-shaped button can slide the adding section rod 3 to retract. This button 6 can complete the shortening and adding of the adding section rod 3 more conveniently and quickly.

[0032] Embodiment 4 is further optimized on the basis of embodiments 1 and 2, wherein the button 6 is a cylindrical button, and a spring 5 is connected inside the cylindrical button. When adding a section, the button 6 automatically pops out when encountering a hole in another adding section rod 3. When shortening, the adding section rod 3 can be slid to contract by pressing the cylindrical button. This button 6 can complete the shortening and adding of the adding section rod 3 more conveniently and quickly.

[0033] Embodiment 5 is further optimized on the basis of embodiments 1 and 2. The button 6 is a spherical button. The surface of the spherical button is connected to a spring 5. When adding a section, the button 6 automatically pops out when encountering a hole in another adding section rod 3. When shortening, the adding section rod 3 can be slid to retract by pressing the spherical button. This button 6 can complete the shortening and adding of the adding section rod 3 more conveniently and quickly.

[0034] Embodiment 6 is further optimized on the basis of embodiment 1, wherein the reinforcing device is a fixed rib 2, which can be a steel bar with a diameter of 6 mm and a length sufficient to weld the digging shovel 1 and the segmented rod 3 together. The fixed rib 2 is symmetrically arranged between the digging shovel 1 and the adjacent segmented rod 3 and fixed by welding, so that the connection between the digging shovel and the adjacent segmented rod is more stable and firm.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pile core soil excavation device, characterized in that: The invention comprises a digging shovel (1), a telescopic rod and a reinforcement device, wherein the digging shovel (1) is fixed to one end of the telescopic rod and is reinforced by the reinforcement device, the telescopic rod comprises at least two segmented rods (3), two adjacent segmented rods (3) are sleeved and matched and are clamped by an elastic expansion joint (4); the digging shovel (1) is a semicircular shovel, the diameter of the semicircular shovel is smaller than the inner diameter of the prefabricated pipe pile, the digging shovel (1) is fixed to the adjacent segmented rods (3), and the two sides of the digging shovel (1) are connected and reinforced with the adjacent segmented rods (3) by the reinforcement device; the elastic expansion joint (4) comprises a spring (5) and a button (6), one end of the segmented rod (3) is provided with a mounting hole, a spring (5) is embedded in the mounting hole and a button (6) is inserted, one end of the button (6) is connected to the spring (5) and the other end contacts the extended segmented rod (3), when the button (6) corresponds to the hole on another segmented rod (3), the button (6) will automatically pop out to fix the segmented rod (3); the reinforcing device is a fixing rib (2), the fixing rib (2) is symmetrically arranged between the digging shovel (1) and the adjacent segmented rod (3) and fixed by welding.

2. A pile core soil excavation device according to claim 1, characterized in that: The digging shovel (1) and the adjacent segmented rod (3) are arranged obliquely, and the edge of the digging shovel (1) is fixedly welded to the adjacent segmented rod (3).

3. A pile core soil excavation device according to claim 2, characterized in that: The segmented rod (3) is a hollow slender rod with a cross section that is quasi-circular with two concave sides. The concave portion of the segmented rod (3) forms a groove, and two adjacent segmented rods (3) are slidably fitted through the groove.

4. A pile core soil excavation device according to claim 3, characterized in that: Each segmented rod (3) has a length of 1 to 3 m and a wall thickness of 0.5 to 2 mm.

5. The pile core soil excavation device according to claim 1, characterized in that: The button (6) is a cap-shaped button, and a spring (5) is connected inside the cap-shaped button.

6. A pile core soil excavation device according to claim 1, characterized in that: The button (6) is a cylindrical button, and a spring (5) is connected inside the cylindrical button.

7. The pile core soil excavation device according to claim 1, characterized in that: The button (6) is a spherical button, and a spring (5) is connected to the surface of the spherical button.

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