Automatic concrete fishing bucket

Abstract

The automatic concrete fishing bucket comprises an inner cylinder and an outer cylinder which are coaxially arranged in a sleeving mode and can rotate relatively, and slurry inlets distributed in the circumferential direction at intervals are formed in the bottoms of the inner cylinder and the outer cylinder; a shaft hole is formed in the center of the bottom of the outer cylinder, a shaft penetrating through the shaft hole is arranged in the center of the bottom of the inner cylinder, a hoop abutting against the bottom of the outer cylinder is arranged on the shaft in a sleeving mode, the hoop is provided with a shifting rod, and the shifting rod is located between the two adjacent guide plates to shift the outer cylinder to rotate, so that the slurry inlets of the inner cylinder and the outer cylinder are opened and closed. The slurry inlets are overlapped or staggered through relative rotation of the inner cylinder and the outer cylinder, the guide plate guides concrete to smoothly enter the inner cylinder, and the efficiency is improved; the hoop prevents the outer cylinder from being axially disengaged; during forward rotation, the slurry inlets coincide to achieve continuous feeding, during reverse rotation, the slurry inlets are staggered and completely closed, concrete leakage in the lifting process is prevented, pile head concrete cleaning is achieved, and the construction efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of pile foundation construction tools, specifically an automatic concrete scoop for cleaning the pile head of cast-in-place piles. Background Technology

[0002] During pile foundation pouring, the pile head area typically requires cleaning to ensure the concrete strength meets design requirements. This is because the pile hole is filled with a mixture of water and mud during drilling, requiring over-pouring of concrete to the point of overflow at the pile top elevation. However, the concrete at the pile head will still contain mud and laitance, causing the concrete slurry mix to fail to meet structural standards. Furthermore, an anchoring space needs to be excavated at the pile head for installing the foundation anchor bolts.

[0003] Currently, the cleaning of pile head concrete mainly relies on manual labor: First, workers enter the reinforcing cage to excavate before the concrete initially sets. However, because the pile head is already bound into a reinforced cage, the dense reinforcement and narrow space make operation extremely inconvenient, resulting in low cleaning efficiency and easy damage to the reinforcing cage. Second, after the concrete hardens, excess concrete is removed by manual chisel work. This is similarly hampered by the reinforcing cage, limiting the working area, and suffers from high labor intensity, long construction periods, and low efficiency. Furthermore, the hammering and vibration can easily damage the effective concrete in the pile body.

[0004] While sand-collecting buckets are widely used for cleaning sediment or sand from pile holes, their opening and closing mechanisms are only suitable for solid materials and cannot be directly used for cleaning concrete at pile heads. These buckets typically have one or two inward-tilting sliding doors at the bottom, which open and close using the impact force of the sand or the bucket's own weight. During lowering, the doors open automatically under the lateral pressure of the sand; during lifting, they close under the weight of the material and the locking mechanism, making them suitable for grabbing solid, loose materials such as sand and pebbles. However, the non-standard concrete at pile heads is a fluid, slurry-like substance that cannot provide the lateral pressure to open the sliding doors. Furthermore, the high fluidity of the slurry means that the existing closure structure of the sand-collecting bucket cannot effectively seal it, leading to significant leakage of the slurry-like concrete during lifting, making effective grabbing and unloading impossible. Therefore, existing sand-collecting buckets cannot be directly used for cleaning slurry-like concrete at pile heads. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies, such as low efficiency and high labor intensity in pile head concrete cleaning operations, and the inability of existing sand scoops to be used for slurry materials, and to provide an automatic concrete scoop that can improve construction efficiency.

[0006] The automatic concrete scoop of the present invention includes an inner cylinder and an outer cylinder coaxially fitted and rotatable relative to each other. The bottom of the inner cylinder and the outer cylinder are respectively provided with a plurality of circumferentially spaced grout inlets. The bottom of the outer cylinder has a guide plate inclinedly provided on one side of the grout inlet for guiding concrete into the inner cylinder. The bottom of the outer cylinder has a shaft hole at the center. The bottom of the inner cylinder has a shaft passing through the shaft hole at the center. The shaft is fitted with a clamp that abuts against the bottom of the outer cylinder. The clamp is provided with a lever located between two adjacent guide plates for turning the outer cylinder to rotate so that the grout inlets of the inner cylinder and the outer cylinder coincide or stagger, and thus opening or closing accordingly.

[0007] The aforementioned automatic concrete scoop utilizes a structure where the inner and outer cylinders are coaxially fitted and can rotate relative to each other. Combined with grouted inlets spaced circumferentially at their bottoms, these inlets can overlap or stagger to achieve opening and closing, thus solving the problem of existing sand scoops that rely on passive opening and closing due to lateral material pressure and cannot grab fluid concrete. Furthermore, a guide plate inclined on one side of the outer cylinder's grouted inlet guides the slurry concrete smoothly into the inner cylinder, significantly improving grabbing efficiency. A clamp fitted onto the shaft prevents the outer cylinder from axially separating from the inner cylinder. Simultaneously, a lever on the clamp engages with the guide plate, controlling the forward and reverse rotation of the inner cylinder to drive the outer cylinder. Cylinder rotation: For example, when the inner cylinder rotates clockwise so that its grout inlet coincides with the grout inlet of the outer cylinder, the lever abuts against the guide plate, and the inner cylinder synchronously drives the outer cylinder to rotate, so that concrete continuously enters the inner cylinder through the grout inlet; when the inner cylinder rotates counterclockwise so that its grout inlet is misaligned with the grout inlet of the outer cylinder, the lever abuts against another guide plate again, and the grout inlet is completely closed, thereby effectively preventing concrete from flowing out during the lifting process. At this time, the bucket can be lifted out of the pile hole. After lifting out of the pile hole, the inner cylinder is rotated clockwise again so that the grout inlet coincides, and the concrete in the inner cylinder can be discharged. The above steps of digging and discharging concrete are repeated until the concrete cleaning of the pile head is completed. The operation is convenient and efficient, significantly improving construction efficiency.

[0008] As a preferred embodiment of the present invention, the top of the inner cylinder is provided with a connecting mechanism that docks with the rotating mechanism. The connecting mechanism is groove-shaped and has through holes around its perimeter for fasteners to pass through.

[0009] As a preferred embodiment of the present invention, the side walls of the inner cylinder and the outer cylinder are provided with a plurality of spaced discharge ports that can overlap or stagger each other by the relative rotation of the inner cylinder and the outer cylinder to achieve opening or closing.

[0010] In a preferred embodiment of the present invention, the clamp is fixed to the shaft by a pin structure.

[0011] In a preferred embodiment of the present invention, the clamp is fixed to the shaft by bolts.

[0012] As a preferred embodiment of the present invention, the guide plate is provided with a baffle at one end of the outer cylinder side wall.

[0013] As a preferred embodiment of the present invention, a gap is left between the inner cylinder and the outer cylinder.

[0014] As a preferred embodiment of the present invention, the outer side wall of the inner cylinder is provided with a plurality of scrapers at circumferential intervals that abut against the inner side wall of the outer cylinder.

[0015] As a preferred embodiment of the present invention, the outer bottom of the inner cylinder is provided with a plurality of scrapers that abut against the inner bottom of the outer cylinder at circumferential intervals. Attached Figure Description

[0016] Figure 1 A schematic diagram of an automatic concrete hopper structure. Figure 1 .

[0017] Figure 2 A schematic diagram of an automatic concrete hopper structure. Figure 2 .

[0018] Figure 3 This is a schematic diagram of an explosion of an automatic concrete scooping bucket structure.

[0019] Figure 4 Schematic diagram of the inner cylinder structure of an automatic concrete hopper Figure 1 .

[0020] Figure 5 Schematic diagram of the inner cylinder structure of an automatic concrete hopper Figure 2 .

[0021] Figure 6 Schematic diagram of the outer cylinder structure of an automatic concrete hopper Figure 1 .

[0022] Figure 7 Schematic diagram of the outer cylinder structure of an automatic concrete hopper Figure 2 . Detailed Implementation

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0024] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "set," "equipped with," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] If the embodiments of this invention involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this invention, "several" means one or more, "multiple" means two or more, and "above," "below," and "within" are all understood to include the stated number. Furthermore, the technical features of each embodiment can be arbitrarily combined. For the sake of brevity, not all possible combinations of the technical features in the embodiments are described; however, as long as these combinations of technical features do not contradict each other, they should be considered within the scope of this specification.

[0027] like Figure 1-7 As shown, an automatic concrete scoop includes an inner cylinder 1 and an outer cylinder 2 coaxially fitted and rotatable relative to each other. The bottom of the inner cylinder and the outer cylinder are respectively provided with a plurality of circumferentially spaced grout inlets 3. The bottom of the outer cylinder is provided with a guide plate 4 inclined on one side of the grout inlet for guiding concrete into the inner cylinder. The bottom center of the outer cylinder 2 is provided with a shaft hole 201. The bottom center of the inner cylinder 1 is provided with a shaft 101 passing through the shaft hole. The shaft is fitted with a clamp 5 that abuts against the bottom of the outer cylinder. The clamp is provided with a lever 501 located between two adjacent guide plates for turning the outer cylinder to rotate so that the grout inlets of the inner cylinder and the outer cylinder coincide or stagger, and thus opening or closing accordingly.

[0028] The aforementioned automatic concrete scoop utilizes a structure where the inner and outer cylinders are coaxially fitted and can rotate relative to each other. Combined with grouted inlets spaced circumferentially at their bottoms, these inlets can overlap or stagger to achieve opening and closing, thus solving the problem of existing sand scoops that rely on passive opening and closing due to lateral material pressure and cannot grab fluid concrete. Furthermore, a guide plate inclined on one side of the outer cylinder's grouted inlet guides the slurry concrete smoothly into the inner cylinder, significantly improving grabbing efficiency. A clamp fitted onto the shaft prevents the outer cylinder from axially separating from the inner cylinder. Simultaneously, a lever on the clamp engages with the guide plate, controlling the forward and reverse rotation of the inner cylinder to drive the outer cylinder. Cylinder rotation: For example, when the inner cylinder rotates clockwise so that its grout inlet coincides with the grout inlet of the outer cylinder, the lever abuts against the guide plate, and the inner cylinder synchronously drives the outer cylinder to rotate, so that concrete continuously enters the inner cylinder through the grout inlet; when the inner cylinder rotates counterclockwise so that its grout inlet is misaligned with the grout inlet of the outer cylinder, the lever abuts against another guide plate again, and the grout inlet is completely closed, thereby effectively preventing concrete from flowing out during the lifting process. At this time, the bucket can be lifted out of the pile hole. After lifting out of the pile hole, the inner cylinder is rotated clockwise again so that the grout inlet coincides, and the concrete in the inner cylinder can be discharged. The above steps of digging and discharging concrete are repeated until the concrete cleaning of the pile head is completed. The operation is convenient and efficient, significantly improving construction efficiency.

[0029] The top of the inner cylinder 1 is provided with a connecting mechanism 6 that mates with the rotating mechanism. The connecting mechanism 6 is groove-shaped and has through holes 601 around its perimeter for fasteners to pass through. The groove-shaped connecting mechanism at the top of the inner cylinder, which mates with fasteners through the through holes around its perimeter, facilitates quick docking and fixation with the drilling rig or rotating mechanism, thereby achieving reliable transmission of rotation.

[0030] The inner cylinder 1 and outer cylinder 2 have several spaced-apart grout outlets 7 that can overlap or stagger each other to open or close by rotating the inner and outer cylinders relative to each other. If concrete enters the inner cylinder and is discharged solely through the grout inlets at the bottom of the inner and outer cylinders, the concrete discharge rate is slow. Therefore, by providing several grout outlets at intervals on the side walls of the inner and outer cylinders, the concrete can be rapidly ejected from both the inlets and outlets during discharge, significantly improving efficiency.

[0031] The clamp 5 is fixed to the shaft by a pin structure. This pin structure eliminates the need for threaded connections or welding, allowing for quick installation and removal of the clamp, improving on-site work efficiency. Furthermore, the pin structure is simple and reliable, reducing manufacturing costs. Alternatively, the clamp can be fixed to the shaft by a bolt 502. The bolt passes through the clamp and is threaded onto the clamp, with the bolt end abutting against the shaft for locking.

[0032] The guide plate 4 is equipped with a baffle 401 at one end of the outer cylinder sidewall. After the baffle is installed at the end of the guide plate located on the outer cylinder sidewall, when the outer cylinder rotates, it can effectively prevent concrete from overflowing from the gap between the guide plate and the outer cylinder sidewall, thus preventing concrete leakage and improving the concrete grabbing efficiency and cleaning effect.

[0033] A gap is left between the inner and outer cylinders. This avoids direct contact and friction between the inner and outer cylinders. At the same time, if a small amount of sand or gravel particles enters between the inner and outer cylinders during rotation, the gap can prevent jamming and ensure that the inner and outer cylinders rotate flexibly and smoothly relative to each other.

[0034] The outer wall of the inner cylinder 1 is circumferentially provided with a plurality of scrapers 8 that abut against the inner wall of the outer cylinder. Furthermore, the outer bottom of the inner cylinder 1 is circumferentially provided with a plurality of scrapers 8 that abut against the inner bottom of the outer cylinder. With scrapers circumferentially installed on the outer wall and bottom of the inner cylinder, residual concrete in the gap between the inner and outer cylinders can be scraped off in a timely manner when they rotate relative to each other, preventing the accumulated material from hardening and causing rotational jamming. This ensures that the inner and outer cylinders maintain flexible rotation over a long period, improving operational reliability and service life, while reducing the workload of manual cleaning and maintenance.

[0035] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the description and drawings of the present invention within the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention. In the description of the present invention, the terms "one embodiment," "some embodiments," "embodiment," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. Those skilled in the art will understand, explicitly and implicitly, that, without conflict, the embodiments described herein can be combined with other embodiments, and the embodiments and features within those embodiments can be combined with each other.

Claims

1. An automatic concrete scooping bucket, comprising an inner cylinder (1) and an outer cylinder (2) coaxially fitted and rotatable relative to each other, characterized in that, The bottom of the inner cylinder and the outer cylinder are respectively provided with a number of circumferentially spaced grout inlets (3). The bottom of the outer cylinder is provided with a guide plate (4) inclined on one side of the grout inlet for guiding concrete into the inner cylinder. The bottom center of the outer cylinder (2) is provided with a shaft hole (201). The bottom center of the inner cylinder (1) is provided with a shaft (101) passing through the shaft hole. The shaft is fitted with a clamp (5) that abuts against the bottom of the outer cylinder. The clamp is provided with a lever (501) located between two adjacent guide plates for turning the outer cylinder to make the grout inlets of the inner cylinder and the outer cylinder coincide or stagger, and thus opening or closing accordingly.

2. The automatic concrete scooping bucket according to claim 1, characterized in that, The top of the inner cylinder (1) is provided with a connecting mechanism (6) that docks with the rotating mechanism. The connecting mechanism (6) is groove-shaped and has through holes (601) around its perimeter for fasteners to pass through.

3. The automatic concrete scooping bucket according to claim 1, characterized in that, The inner cylinder (1) and the outer cylinder (2) have several spaced discharge ports (7) that can be overlapped or staggered by the relative rotation of the inner and outer cylinders to achieve opening or closing.

4. The automatic concrete scooping bucket according to claim 1, characterized in that, The clamp (5) is fixed to the shaft by a pin structure.

5. The automatic concrete scooping bucket according to claim 1, characterized in that, The clamp (5) is fixed to the shaft by bolts (502).

6. The automatic concrete scooping bucket according to claim 1, characterized in that, The guide plate (4) is provided with a baffle (401) at one end of the outer cylinder side wall.

7. The automatic concrete scooping bucket according to claim 1, characterized in that, A gap is left between the inner cylinder and the outer cylinder.

8. The automatic concrete scooping bucket according to claim 1, characterized in that, The outer side wall of the inner cylinder (1) is provided with a number of scrapers (8) that abut against the inner side wall of the outer cylinder at circumferential intervals.

9. The automatic concrete scooping bucket according to claim 1, characterized in that, The outer bottom of the inner cylinder (1) is provided with several scrapers (8) that abut against the inner bottom of the outer cylinder.

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