Bucket for removing concrete slabs and method for removing concrete using the same

Abstract

To provide a technology that allows for the rapid and noise-reduced removal of concrete pavement with a simple configuration. [Solution] The concrete slab removal bucket 30 is attached to a construction machine via a mounting part 34 to remove concrete. The concrete slab removal bucket 30 comprises a bottom part 31 that forms the bottom side of the concrete slab removal bucket 30, side plates 32 provided at the lateral end of the bottom part 31 that form the left and right sides of the concrete slab removal bucket 30, and a notch 33 formed by cutting out the side plate 32 for scooping up and locking the concrete slab 51.

Description

Technical Field

[0001] The present invention relates to a bucket for removing concrete, which is attached to construction machinery and removes concrete.

Background Art

[0002] Conventionally, in roads with concrete paving, etc., when the paving has deteriorated and maintenance work is required, or when investigation work under the paving is required, the concrete paving is pried up (excavated) with an excavation drill or excavator called a breaker, and the crushed concrete is removed with a bucket of construction machinery or the like. As such a bucket for removing concrete, the technology of Patent Document 1 is known.

[0003] The technology of Patent Document 1 is a bucket attached as an attachment of construction machinery, and includes a bucket body, a gripping arm that is provided on the bucket body so as to be openable and closable and meshes with the opening edge of the bucket body, and a hydraulic cylinder that is provided on the bucket body and opens and closes the gripping arm.

[0004] According to this bucket, excavation work such as earth and sand can be performed with the gripping arm closed, and the excavated material can be lifted by opening and closing the gripping arm.

[0005] However, with the bucket of Patent Document 1, it is difficult to excavate thick and hard concrete paving, so it is still necessary to pry up (excavate) the concrete paving with a breaker (excavation drill). When prying up the concrete paving with a breaker, there is a risk of generating a large amount of noise, flying concrete fragments, and thus countermeasures are required. In addition, since the dismantling work can only be carried out little by little, the dismantling time is long.

[0006] Furthermore, in the bucket described in Patent Document 1, since the gripping arm itself is opened and closed, the bucket body is equipped with a support shaft for the gripping arm and a hydraulic cylinder for opening and closing. While this allows it to grip various objects, it is not specialized for removing concrete pavement and is therefore unsuitable for that purpose, and the bucket has many components. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Japanese Patent Application Publication No. 2-35119 [Overview of the Initiative] [Problems that the invention aims to solve]

[0008] In view of the above, the present invention aims to provide a technology that enables the rapid and noise-reducing removal of concrete pavement with a simple configuration. [Means for solving the problem]

[0009] According to an embodiment of the present invention, a concrete slab removal bucket is attached to a construction machine to remove concrete, The aforementioned concrete is a concrete slab cut from a thick pavement. The concrete slab removal bucket is characterized by comprising a bottom portion that forms the bottom side of the concrete slab removal bucket, side plates provided at the lateral ends of the bottom portion that form the left and right sides of the concrete slab removal bucket, and notches formed by cutting out the side plates for scooping up and locking the concrete slab.

[0010] With this configuration, the concrete slab removal bucket comprises a bottom portion that forms the bottom of the concrete slab removal bucket, side plates provided at the lateral ends of the bottom portion that form the left and right sides of the concrete slab removal bucket, and notches formed by cutting out the side plates for scooping up and locking in concrete slabs. As a result, thick concrete slabs cut from the pavement can be scooped into the notches and lifted up, allowing for the removal of large volumes of concrete slabs at once without the use of breakers. This simple configuration enables the rapid and noise-reducing removal of concrete pavement.

[0011] Preferably, the notch is cut out in a rectangular shape from the front edge of the side plate toward the rear.

[0012] With this configuration, since the notch is cut out in a rectangular shape from the front edge of the side plate toward the rear, the concrete slab can be inserted into the notch simply by moving the concrete slab removal bucket to the front. This simple configuration improves work efficiency and allows for the rapid and noise-reduced removal of concrete pavement.

[0013] Preferably, the bottom of the concrete slab removal bucket comprises a flat portion extending in a planar manner from the front portion to the rear of the concrete slab removal bucket, a curved portion formed by curving from the rear end portion of the flat portion, and a bottom portion extending from the upper end portion of the curved portion. The notch is formed along the flat portion of the bottom when viewed from the side.

[0014] With this configuration, the bottom of the concrete slab removal bucket comprises a flat section extending in a planar manner from the front end to the rear of the bucket, a curved section formed by curving from the rear end of the flat section, and an upper bottom section extending from the upper end of the curved section. The notch is formed along the flat section of the bottom in a side view, so the concrete slab can be inserted into the notch by moving the bucket using the flat section as a guide. Furthermore, since the notch is formed near the flat section, the lower edge of the notch is close to the flat section, allowing the lower edges of the flat section and the notch to easily slide under the concrete slab. This simple configuration improves work efficiency and allows for the rapid and noise-reduced removal of concrete pavement.

[0015] Preferably, the bottom portion is provided with reinforcing ribs that extend in the front-rear direction of the concrete slab removal bucket.

[0016] With this configuration, the bottom is provided with reinforcing ribs that extend in the front-to-back direction of the concrete slab removal bucket. As a result, even if the flat surface of the bottom is thin, the ribs can improve rigidity, and even if the concrete slab is heavy, the thin flat surface and the lower edge of the notch can be easily slid under the concrete slab, thereby improving work efficiency.

[0017] Preferably, the tip of the bottom portion is provided with tapered claws.

[0018] With this configuration, the tip of the bottom is provided with tapered claws, which allow the tip of the claw to be inserted into the cut line between the concrete slabs, and the inclined surface of the claw can guide the concrete slab into the notch.

[0019] Preferably, the concrete slab removal bucket is a skeleton bucket in which the flat surface of the bottom is formed into a mesh.

[0020] According to such a configuration, since the bucket for removing the concrete slab has a skeleton bucket with a mesh formed on the flat part of the bottom, even if the roadbed under the concrete slab is scooped up, it can be dropped through the mesh and only the concrete slab can be scooped into the notch part.

[0021] Preferably, the bucket for removing the concrete slab is mounted outwardly with respect to the construction machine.

[0022] According to such a configuration, since the bucket for removing the concrete slab is mounted outwardly with respect to the construction machine, even when the ceiling is low during construction in the tunnel, the concrete slab can be dropped from the bucket for removing the concrete slab onto the loading platform of the dump truck and the bucket for removing the concrete slab can be retracted so as to escape without moving the arm of the construction machine high.

[0023] Preferably, a concrete slab removal method using a bucket for removing a concrete slab, which uses the bucket for removing the concrete slab mounted on a construction machine to remove the paved concrete slab, a paving slab cutting step of cutting the thick concrete paving to obtain a concrete slab, a paving slab removal step of scooping and locking the concrete slab using the bucket for removing the concrete slab, which includes a bottom forming the bottom side, side plates provided at the lateral ends of the bottom to form left and right sides, and notch parts formed by being cut out in the side plates, and removing the concrete slab, and a concrete slab loading and unloading step of placing the removed concrete slab on a dump truck.

[0024] According to such a configuration, there are provided a pavement plate cutting step of cutting a thick concrete pavement to obtain a concrete plate, and a pavement plate removing step of scooping up and locking a concrete plate using a concrete plate removing bucket having a bottom, side plates, and a notch formed by cutting the side plates, and removing the concrete plate. Therefore, it is only necessary to scoop up and lift the concrete plate cut from the thick pavement into the notch, and a concrete plate with a large volume can be removed at once without using a breaker, and the removal of the concrete pavement can be performed quickly and with noise suppression with a simple configuration.

Advantages of the Invention

[0025] It is possible to provide a technique capable of quickly removing a concrete pavement with a simple configuration and suppressing noise.

Brief Description of the Drawings

[0026] [Figure 1] It is a side view of a construction machine (backhoe) to which a concrete plate removing bucket according to an embodiment is attached. [Figure 2] It is a perspective view of a concrete plate removing bucket according to an embodiment. [Figure 3] It is a front view of a concrete plate removing bucket according to an embodiment. [Figure 4] FIG. 4(A) is a diagram for explaining a pavement plate cutting step according to an embodiment. FIG. 4(B) is a diagram for explaining the first half of a pavement plate removing step according to an embodiment. [Figure 5] FIG. 5(A) is a diagram for explaining the second half of a pavement plate removing step according to an embodiment. FIG. 5(B) is a diagram for explaining a state in which a concrete plate is lifted by a concrete plate removing bucket according to an embodiment. [Figure 6] It is an operation diagram of scooping up a concrete plate with a concrete plate removing bucket in a tunnel. [Figure 7] It is an operation diagram of lowering a concrete plate from a concrete plate removing bucket into a dump truck in a tunnel. [Figure 8] This diagram shows the process of unloading concrete slabs from a concrete slab removal bucket onto a dump truck outside a tunnel. [Figure 9] This is a cross-sectional view of a concrete slab removal bucket according to an embodiment. [Modes for carrying out the invention]

[0027] Embodiments of the present invention will be described below with reference to the attached drawings. The drawings conceptually (schematically) show the construction machinery and the bucket for removing concrete slabs. [Examples]

[0028] As shown in Figure 1, a concrete slab removal bucket 30 is attached to a construction machine (backhoe, mobile unit) 10. The construction machine 10 comprises a lower traveling body 11, an upper rotating body 13 that is rotatably mounted on the lower traveling body 11 via a pivot axis 12, and a working device 14 mounted on the upper rotating body 13. An operating room (cab) 15 is mounted at the front of the upper rotating body 13, and an engine and counterweight 17 located in a machine room 16 are mounted at the rear of the upper rotating body 13.

[0029] The upper slewing body 13 is rotatably supported by a boom 21 and a boom cylinder (actuator) 22 that rotates the boom 21. The tip of the boom cylinder 22 is rotatably connected to the boom 21 via a pin. An arm 23 is pivotally supported at the tip of the boom 21 so as to be rotated by an arm cylinder (actuator) 24. The working device 14 includes the boom 21 and the arm 23. An attachment, a concrete slab removal bucket 30, is pivotally supported on the arm 23 so as to be rotated by an attachment cylinder (actuator) 26 via a link section 25.

[0030] Next, we will explain the concrete slab removal bucket 30. As shown in Figures 1 to 3 and Figure 9, the concrete slab removal bucket 30 is attached to the construction machine 10 via the mounting part 34 to remove concrete. Here, the concrete is a concrete slab 51 cut from a thick pavement (concrete pavement) 50 (see Figure 4). The thickness of the pavement (concrete pavement) 50 is 10 cm to 40 cm. In this embodiment, the thickness of the pavement 50 is set to 10 cm to 40 cm, but it is not limited to this, and the thickness of the pavement 50 may be 5 cm, 45 cm, 50 cm, etc., and it is acceptable to use a bucket with the notch height (notch width) of the notch part 33 adjusted to match the thickness of the pavement 50.

[0031] The concrete slab removal bucket 30 comprises a bottom portion 31 that forms the bottom side of the concrete slab removal bucket 30, side plates 32 provided at the lateral ends of the bottom portion 31 that form the left and right sides of the concrete slab removal bucket 30, and a notch portion 33 formed by cutting out the side plates 32 for scooping up and locking the concrete slab 51.

[0032] The notch 33 is cut out in a rectangular shape from the front edge of the side plate 32 towards the rear, and its height is set to be slightly greater than the thickness of the concrete slab 51. In addition, the depth dimension of the notch 33 is set to be greater than the height dimension. This prevents the concrete slab 51 from easily falling out of the notch 33 when the concrete slab removal bucket 30 is moved after scooping the concrete slab 51 into the notch 33.

[0033] In this embodiment, the depth dimension of the notch 33 is set to be greater than the height dimension, but this is not limited to this. The height and depth dimensions of the notch 33 may be set to be the same, or the depth dimension may be set to be smaller than the height dimension of the notch 33. Also, the shape of the notch 33 may be such that the height dimension of the entrance portion is greater than the height dimension of the back portion. This allows the concrete slab 51 to be easily guided into the notch 33.

[0034] Furthermore, a reinforcing member 33a is provided at the edge of the notch 33. This improves the rigidity of the edge of the notch 33.

[0035] The bottom 31 of the concrete slab removal bucket 30 comprises a flat portion 31a extending in a planar manner from the front portion to the rear of the concrete slab removal bucket 30, a curved portion 31b formed by curving from the rear end portion of the flat portion 31a, and a bottom portion 31c extending from the upper end portion of the curved portion 31b. The notch portion 33 is formed along the flat portion 31a of the bottom 31 in a side view and in the vicinity of the flat portion 31a.

[0036] The bottom portion 31 is provided with multiple reinforcing ribs 37 that extend in the front-rear direction of the concrete slab removal bucket 30. The multiple ribs 37 are connected to a rigid bar 41. In addition, tapered claws 38 are provided at the tip of the bottom portion 31.

[0037] Furthermore, the bottom portion 31c of the bottom portion 31 is equipped with a pressing cylinder 35 that extends and retracts downward toward the concrete slab removal bucket 30, and a pressing member 36 provided on the pressing cylinder 35 that holds down the concrete slab 51 that has entered the notch portion 33.

[0038] The concrete slab removal bucket 30 is a so-called skeleton bucket, in which the flat portion 31a of the bottom 31 is formed into a mesh. In this embodiment, the concrete slab removal bucket 30 is a skeleton bucket, but it is not limited to this, and may be a so-called standard bucket, wide bucket, narrow bucket, slope bucket, etc.

[0039] The concrete slab removal bucket 30 is mounted facing outwards to the construction machine (backhoe) 10. In this embodiment, the concrete slab removal bucket 30 is mounted facing outwards to the construction machine (backhoe) 10, but it is not limited to this, and the concrete slab removal bucket 30 may also be mounted facing inwards to the construction machine (backhoe) 10.

[0040] Next, we will explain a method for removing concrete using a concrete slab removal bucket 30. As shown in Figures 4 to 8, the concrete removal method using the concrete slab removal bucket 30 is a method of removing paved concrete slabs 51 using a concrete slab removal bucket 30 attached to a construction machine 10.

[0041] The concrete removal method using the concrete slab removal bucket 30 comprises a pavement slab cutting step, a pavement slab removal step, and a concrete slab loading and unloading step.

[0042] As shown in Figure 4(A), in the pavement cutting process, a thick concrete pavement 50 is cut with a cutter 60 to obtain concrete slabs 51. The concrete pavement 50 is placed on the roadbed 54 (see Figure 5(A)), and by cutting it with the cutter 60, cut lines 53 are formed, and multiple concrete slabs 51 are obtained.

[0043] As shown in Figures 4(B) to 6, in the pavement removal process, a concrete slab removal bucket 30 is used to scoop up and lock the concrete slab 51, and to remove the concrete slab 51, using a bucket 30 which has a bottom portion 31 forming the bottom side, side plates 32 provided at the lateral ends of the bottom portion 31 to form the left and right sides, and a notched portion 33 formed by cutting out the side plates 32.

[0044] As shown in Figures 7 and 8, in the concrete slab loading and unloading process, the removed concrete slabs 51 are placed on the cargo bed 62 of a dump truck 61.

[0045] As shown in Figure 7, the concrete slab removal bucket 30 is mounted facing outward relative to the construction machine 10. Therefore, even when the ceiling 56 is low during construction inside the tunnel 55, the concrete slab removal bucket 30 can be retracted to allow the concrete slab 51 to be lowered from the bucket 30 onto the bed 62 of the dump truck 61 and then moved away, without having to move the arm 23 of the construction machine 10 higher.

[0046] Next, the effects of the concrete slab removal bucket 30 of the above-described embodiment will be explained. In this embodiment of the present invention, the concrete slab removal bucket 30 includes a bottom portion 31 that forms the bottom of the concrete slab removal bucket 30, side plates 32 provided at the lateral ends of the bottom portion 31 that form the left and right sides of the concrete slab removal bucket 30, and a notch portion 33 formed by cutting out the side plates 32 for scooping up and locking in the concrete slab 51. As a result, the concrete slab 51, which has been cut from the thick pavement, can be scooped into the notch portion 33 and lifted up, and a large volume of concrete slab 51 can be removed at once without using a breaker. This allows for the rapid and noise-reducing removal of concrete pavement 50 with a simple configuration.

[0047] Furthermore, since the notch 33 is cut out in a rectangular shape from the front edge of the side plate 32 toward the rear, the concrete slab 51 can be inserted into the notch 33 simply by moving the concrete slab removal bucket 30 forward. This simple configuration improves work efficiency and allows for the rapid and noise-free removal of the concrete pavement 50.

[0048] Furthermore, the bottom 31 of the concrete slab removal bucket 30 includes a flat section 31a extending in a planar manner from the front end to the rear of the concrete slab removal bucket 30, a curved section 31b formed by curving from the rear end of the flat section 31a, and a bottom section 31c extending from the upper end of the curved section 31b. The notch 33 is formed along the flat section 31a of the bottom 31 in a side view, so the concrete slab 51 can be inserted into the notch 33 by moving the concrete slab removal bucket 30 using the flat section 31a as a guide. Moreover, since the notch 33 is formed near the flat section 31a, the lower edge of the notch 33 is close to the flat section 31a, allowing the flat section 31a and the lower edge of the notch 33 to easily slide under the concrete slab 51, improving work efficiency with a simple configuration and enabling the removal of concrete pavement 50 quickly and with reduced noise.

[0049] Furthermore, the bottom portion 31 is provided with reinforcing ribs 37 that extend in the front-rear direction of the concrete slab removal bucket 30. As a result, even if the flat portion 31a of the bottom portion 31 is thin, the rigidity can be improved by the ribs 37. This allows the thin flat portion 31a and the lower edge of the notch 33 to easily slide under the concrete slab 51, even if the concrete slab 51 is heavy, thereby improving work efficiency.

[0050] Furthermore, since the tip of the bottom portion 31 is provided with tapered claws 38, the tip of the claws 38 can be inserted into the cut line 53 between the concrete slabs 51, and the inclined surface of the claws 38 can guide the concrete slabs 51 into the notches 33.

[0051] Furthermore, since the concrete slab removal bucket 30 is a skeleton bucket with a mesh-like flat surface 31a at its bottom 31, even if the roadbed 54 beneath the concrete slab 51 is scooped up, it can fall through the mesh and only the concrete slab 51 can be scooped into the notched section 33.

[0052] Furthermore, since the concrete slab removal bucket 30 is mounted facing outward relative to the construction machine 10, even if the ceiling 56 is low during construction inside the tunnel 55, the concrete slab removal bucket 30 can be moved to a safe location so that the concrete slab 51 is lowered from the bucket 30 onto the bed 62 of the dump truck 61 and the bucket can be moved away, without having to move the arm 23 of the construction machine 10 higher.

[0053] Furthermore, the system includes a pavement cutting step to obtain a concrete slab 51 by cutting the thick concrete pavement 50, and a pavement removal step in which the concrete slab 51 is scooped up and secured using a concrete slab removal bucket 30, which has a bottom 31, side plates 32, and a notched portion 33 formed by cutting out the side plates 32, and then the concrete slab 51 is removed. As a result, the concrete slab 51 cut from the thick pavement is simply scooped up into the notched portion 33 and lifted up, and a large volume of concrete slab 51 can be removed at once without using a breaker, allowing for the rapid and noise-reducing removal of concrete pavement 50 with a simple configuration.

[0054] In this embodiment, a reinforcing member 33a is provided on the edge of the notched portion 33 of the concrete slab removal bucket 30. However, the invention is not limited to this, and the side plate 32 may be simply cut out without providing a reinforcing member 33a on the edge of the notched portion 33.

[0055] In other words, the present invention is not limited to the examples, as long as it achieves the functions and effects of the present invention. [Industrial applicability]

[0056] The technology of the present invention is suitable for concrete slab removal buckets that are attached to construction machinery to remove concrete. [Explanation of Symbols]

[0057] 10… Construction machinery (backhoes, mobile equipment) 23… Arm 30… Bucket for concrete removal 31…bottom 31a...Plane part 31b...Curved section 31c...bottom top 32… Side panel 33… Notch 33a…Reinforcement member 37… Rib 38… Nails 50… Concrete pavement (pavement) 51… Concrete slab 52… recess 53… Cut line 55... Tunnel 56… Ceiling 60... Cutter 61… Dump truck 62... Truck bed

Claims

1. A concrete slab removal bucket that is attached to construction machinery to remove concrete, The aforementioned concrete is a concrete slab cut from a thick pavement. The concrete slab removal bucket is characterized by comprising a bottom portion that forms the bottom side of the concrete slab removal bucket, side plates provided at the lateral ends of the bottom portion that form the left and right sides of the concrete slab removal bucket, and notches formed by cutting out the side plates for scooping up and locking the concrete slab.

2. A concrete slab removal bucket according to claim 1, The bucket for removing concrete slabs is characterized in that the notch is cut out in a rectangular shape from the front edge of the side plate toward the rear.

3. A concrete slab removal bucket according to claim 1 or claim 2, The bottom of the concrete slab removal bucket comprises a flat portion extending in a planar manner from the front portion to the rear of the concrete slab removal bucket, a curved portion formed by curving from the rear end portion of the flat portion, and a bottom portion extending from the upper end portion of the curved portion. The bucket for removing concrete slabs is characterized in that the notch is formed along the flat portion of the bottom when viewed from the side.

4. A concrete slab removal bucket according to claim 1 or claim 2, The concrete slab removal bucket is characterized in that the bottom portion is provided with reinforcing ribs that extend in the front-rear direction of the concrete slab removal bucket.

5. A concrete slab removal bucket according to claim 1 or claim 2, A concrete slab removal bucket characterized by having tapered claws at the tip of the bottom portion.

6. A concrete slab removal bucket according to claim 1 or claim 2, The concrete slab removal bucket is characterized in that the flat portion of the bottom is a skeleton bucket with a mesh structure.

7. A concrete slab removal bucket according to claim 1 or claim 2, The concrete slab removal bucket is characterized in that it is mounted facing outward relative to the construction machine.

8. A concrete removal method using a concrete slab removal bucket attached to a construction machine, wherein paved concrete slabs are removed using a concrete slab removal bucket, The pavement cutting process involves cutting thick concrete pavement to obtain concrete slabs, A pavement removal process comprising using a concrete slab removal bucket having a bottom portion forming the bottom side, side plates provided at the lateral ends of the bottom portion to form the left and right sides, and notches formed by cutting out the side plates, to scoop up and lock the concrete slab and remove the concrete slab, A concrete removal method using a concrete slab removal bucket, characterized by comprising a concrete slab loading and unloading step of placing the removed concrete slab onto a dump truck.

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