Crusher

Abstract

To enhance the degree of freedom in the position of a crusher.SOLUTION: A crusher 100 for crushing a structure E comprises: a fixed crushing arm 12; a movable crushing arm 13 turnably connected to the fixed crushing arm; a bucket 30 suspended from the fixed crushing arm to accept crushed pieces falling outside the structure; and a suspension member 32 for connecting the fixed crushing arm and the bucket so that the bucket can be suspended. A lower end of the suspension member is turnably connected to the bucket.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present disclosure relates to a crushing device, and more particularly to a crushing device for crushing structures. [Background technology]

[0002] When demolishing a structure, particularly a tower-like structure such as a chimney made of reinforced concrete, a crushing device is used to crush the structure. The crushing device has a fixed crushing arm and a movable crushing arm rotatably connected to the fixed crushing arm, and the fixed crushing arm and the movable crushing arm clamp the wall at the top of the structure and crush it. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 63-62548 Summary of the Invention [Problem to be solved by the invention]

[0004] The crushing device includes a bucket suspended from a fixed crushing arm to receive crushed pieces that fall outside the structure, and a suspending member that connects the fixed crushing arm and the bucket to suspend the bucket. Generally, the lower end of the suspending member is fixed to the bucket.

[0005] However, if the lower end of the hanging member is fixed to the bucket, the relative position of the fixed crushing arm to the structure is determined to some extent when the bucket is pressed against the structure, which reduces the degree of freedom in the positioning of the crushing device.

[0006] The present disclosure has been made in view of the above circumstances, and its purpose is to provide a crushing device that can improve the degree of freedom in positioning the crushing device. [Means for solving the problem]

[0007] According to one aspect of the present disclosure, A crushing device for crushing a structure, comprising: Fixed crushing arm, A movable crushing arm rotatably connected to the fixed crushing arm; a bucket suspended from the fixed crushing arm to receive crushed pieces falling outside the structure; a suspending member that connects the fixed crushing arm and the bucket so as to suspend the bucket; Equipped with The lower end of the hanging member is rotatably connected to the bucket. A crushing device characterized by the above features is provided.

[0008] Preferably, the movable crushing arm is connected to the fixed crushing arm so as to be rotatable around a reference rotation axis extending in a horizontal direction, The lower end of the hanging member is connected to the bucket so as to be rotatable about a first rotation axis parallel to the reference rotation axis.

[0009] Preferably, an upper end of the hanging member is connected to the fixed crushing arm so as to be rotatable about a second rotation axis parallel to the reference rotation axis.

[0010] Preferably, the crushing device includes a restricting mechanism for restricting rotation of the hanging member relative to the bucket. [Effects of the Invention]

[0011] According to the present disclosure, the degree of freedom in the position of the crushing device can be improved. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a schematic diagram showing a dismantling system according to a basic embodiment. [Figure 2] FIG. 2 is a left side view showing the crushing device of the basic embodiment. [Figure 3] FIG. 2 is a front view showing the suspension member of the basic embodiment. [Figure 4] FIG. 4 is a front cross-sectional view showing a connection portion of the hanging member. [Figure 5] FIG. 2 is a left side view showing the crushing device of the present embodiment. [Figure 6] FIG. 2 is a front view showing a portion of the hanging member and the bucket of the present embodiment. [Figure 7] FIG. 2 is a left side view showing the entirety of the hanging member and the bucket of the present embodiment. [Figure 8] FIG. 10 is a left side view illustrating how to use the basic embodiment. [Figure 9] FIG. 10 is a left side view illustrating how to use the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. Note that the present disclosure is not limited to the following embodiments.

[0014] First, a basic embodiment that forms the basis of this embodiment will be described. Then, this embodiment will be described. This embodiment is a modification or improvement of the basic embodiment. Therefore, it should be noted that the unchanged parts of the basic embodiment constitute the components of this embodiment.

[0015] Fig. 1 shows a demolition system S according to a basic embodiment. The demolition system S is for demolishing structures, particularly tower-like structures such as chimneys made of reinforced concrete. The structure in this embodiment is a chimney E.

[0016] The upper end of the chimney E is crushed by the crushing device 100. The crushing device 100 is suspended by a wire 3 from the tip of a boom 2 of a traveling crane 1. The state of the work performed by the crushing device 100 is photographed by a camera 4 of the crushing device 100 and a camera 5 attached to the boom 2. Camera 4 will be described later. Camera 5 is a camera for photographing the state of the crushing work from a position higher and farther away than camera 4.

[0017] Meanwhile, in the driver's cab 6 of the crane 1, there is a television monitor 7 that displays images from cameras 4 and 5, and the driver watches this. Also, in the control room 8 on the ground, there is a television monitor 9 that displays images from cameras 4 and 5, and an operator watches this. The driver's cab 6 and the control room 8 are connected to each other via a communication device so that they can communicate with each other. The driver in the driver's cab 6 and the operator in the control room 8 watch the television monitors 7 and 9, respectively, and communicate with each other, operating the crane 1 and the crushing device 100 in cooperation with each other to carry out the crushing and demolition work.

[0018] Figure 2 shows a crushing device 100 according to a basic embodiment. For convenience, the front-rear, left-right, top-bottom directions are defined as shown in the figure. The front-rear and left-right directions are both horizontal and perpendicular to each other. The top-bottom direction is vertical and perpendicular to the front-rear and left-right directions.

[0019] The crushing device 100 comprises a base 10 suspended by a wire 3, a swivel 11 attached to the base 10 so as to be rotatable about a rotation axis C1, a fixed crushing arm 12 attached to the swivel 11, and a movable crushing arm 13 connected to the fixed crushing arm 12 so as to be rotatable about a rotation axis C2. The rotation axis C1 extends in the vertical direction, and the rotation axis C2 extends in the horizontal direction (specifically, left and right). The rotation axis C2 corresponds to the reference rotation axis referred to in the claims.

[0020] An on-board unit 14 is provided on the pedestal 10. The on-board unit 14 includes a hydraulic unit for driving hydraulic cylinders and the like (described below), a generator for generating the necessary power, and a wireless transceiver for transmitting video data from the camera 4 and receiving control signals from the operation room 8. The on-board unit 14 also includes a motor for rotating the swivel base 11 and a reducer for transmitting the rotation of the motor to the swivel base 11. The output shaft of the reducer is arranged coaxially with the rotation axis C1, passes through the pedestal 10, and is connected and fixed to the center of the swivel base 11. The swivel base 11 is formed in a disk shape in a plan view when viewed from above, and is rotatable along the underside of the pedestal 10.

[0021] The fixed crushing arm 12 is suspended from the underside of the swivel base 11. In the illustrated example, the fixed crushing arm 12 extends from the rear (base end side) to the front (tip end side), and when viewed from the side (specifically, the left side), the tip end is bent downward at a right angle, forming a substantially L-shape.

[0022] The rear end of the fixed crushing arm 12 is rotatably attached to the underside of the swivel base 11 by a support shaft 15. The support shaft 15 defines a rotation axis C3 extending in the left-right direction, and the fixed crushing arm 12 can rotate up and down, i.e., in the up-and-down direction, around this rotation axis C3. The rotation axis C3 is parallel to the rotation axis C2.

[0023] The front end of the fixed crushing arm 12 is connected to the underside of the swivel base 11 by a link 16 extending in the vertical direction. The upper end of the link 16 is rotatably attached to the underside of the swivel base 11 by a support shaft 17. The lower end of the link 16 is rotatably attached to the upper side of the fixed crushing arm 12 by a support shaft 18. The support shafts 17 and 18 define rotation axes C4 and C5 extending in the left-right direction, and the link 16 is rotatable about these rotation axes C4 and C5 relative to the swivel base 11 and the fixed crushing arm 12. The rotation axes C4 and C5 are parallel to the rotation axis C3. The fixed crushing arm 12 extends in a direction perpendicular to the rotation axis C3.

[0024] The movable crushing arm 13 extends downward from the fixed crushing arm 12 in a roughly C-shape when viewed from the side. The upper end of the movable crushing arm 13 is rotatably attached to a roughly middle part in the longitudinal direction (front-rear direction) of the fixed crushing arm 12 by a support shaft 19. This support shaft 19 defines the rotation axis C2 extending in the left-right direction, and the movable crushing arm 13 is rotatable in the front-rear direction around this rotation axis C2.

[0025] The movable crushing arm 13 is connected to the fixed crushing arm 12 at approximately its longitudinal (vertical) middle portion by a hydraulic cylinder 20 extending vertically. The upper end of the cylinder body of the hydraulic cylinder 20 is rotatably attached to the rear upper end of the fixed crushing arm 12 by a support shaft 21. The lower end of the piston rod of the hydraulic cylinder 20 is rotatably attached to the fixed crushing arm 12 at approximately its longitudinal middle portion by a support shaft 22. The support shafts 21 and 22 define rotation axes C6 and C7 extending in the left-right direction, and the hydraulic cylinder 20 is rotatable relative to the fixed crushing arm 12 and the movable crushing arm 13 around these rotation axes C6 and C7. The rotation axes C6 and C7 are parallel to the rotation axis C3. The movable crushing arm 13 also extends in a direction perpendicular to the rotation axis C3.

[0026] By extension and retraction of the hydraulic cylinder 20, the movable crushing arm 13 rotates in the front-rear direction around the rotation axis C2, moving toward or away from the fixed crushing arm 12. When the movable crushing arm 13 rotates forward (i.e., moves forward), the fixed crushing arm 12 and the movable crushing arm 13 pinch the wall at the top end of the chimney E and crush it. Note that the chimney E in the figure shows the position during crushing.

[0027] The fixed crushing arm 12 and the movable crushing arm 13 are respectively provided with vertical reinforcing bars (i.e., vertical bars) cutter and horizontal reinforcing bars (25, 26) cut horizontal reinforcing bars (i.e., horizontal bars) extend in the horizontal direction. These vertical reinforcing bar cutters 23, 24 and horizontal reinforcing bar cutters 25, 26 apply shear force to the vertical reinforcing bars and horizontal reinforcing bars, respectively, to cut the vertical reinforcing bars and horizontal reinforcing bars like scissors.

[0028] The crushing device 100 also includes a bucket 30 that is suspended from the fixed crushing arm 12 and receives crushed pieces that fall outside the chimney E.

[0029] The bucket 30 is suspended from brackets 31 that are integrally provided on the fixed crushing arm 12 via suspension members 32. A pair of brackets 31 are provided on the left and right at the center of the left-right width on the front part of the fixed crushing arm 12 (see Figure 3).

[0030] The hanging member 32 connects the fixed crushing arm 12 and the bucket 30 to suspend the bucket 30. The lower end of the hanging member 32 is fixed integrally to the bucket 30. The upper end of the hanging member 32 is rotatably attached to the bracket 31 by a support shaft 33. The support shaft 33 defines a rotation axis C8 that extends in the left-right direction. The rotation axis C8 is parallel to the rotation axis C3. The hanging member 32 and the bucket 30 can rotate, i.e., swing, in the front-to-rear direction as a unit around this rotation axis C8.

[0031] A seal member 34 that protrudes from the rear end of the bucket 30 seals the gap between the bucket 30 and the chimney E. The seal member 34 is formed of a flexible plate such as a rubber plate.

[0032] The bottom plate 35 of the bucket 30 is attached by a hinge 36 and can be opened and closed. The bucket 30 is provided with a pair of hydraulic cylinders 37, one on the left and one on the right, for driving the bottom plate 35 to open and close (only the left side is shown). Normally, the hydraulic cylinders 37 are contracted as shown by solid lines, and the bottom plate 35 is closed. On the other hand, when the hydraulic cylinders 37 are extended as shown by imaginary lines, the bottom plate 35 opens and the crushed pieces in the bucket 30 are discharged and dropped. At this time, the crushing device 100 is moved by the crane 1, and the bucket 30 is positioned directly above the chimney E, and the crushed pieces are discharged and dropped into the chimney E.

[0033] The crushing device 100 also includes the camera 4 described above to capture images of the crushing process performed by the fixed crushing arm 12 and the movable crushing arm 13.

[0034] The camera 4 is attached to the tip of an L-shaped arm 38 attached to the swivel base 11, and is designed to capture images of the crushing operation from diagonally above and in front of the fixed crushing arm 12. In the illustrated example, the arm 38 extends forward from the swivel base 11, with its tip bent downward. The camera 4 is attached to this tip facing diagonally downward and rearward. The arm 38 and camera 4 are positioned at the center of the left-right width of the fixed crushing arm 12. Well-known optional mechanisms, such as a lens rotation mechanism for fine-tuning the lens orientation and a zoom mechanism, may be added to the camera 4.

[0035] FIG. 3 is a front view of the hanging member 32 in the crushing apparatus 100 of the basic embodiment, as viewed from the front. As shown in the figure, the hanging member 32 has a generally A-shaped or triangular, plate-like overall shape that is symmetrical from left to right. The hanging member 32 is configured by integrally connecting left and right side beams 39 with a cross beam 40, a front panel 41, and a rear panel (not shown). The side beams 39 and cross beam 40 are formed from square steel pipes, and the front panel 41 and rear panel are formed from steel plates, which are welded together. The left and right side beams 39 have a symmetrical shape, and the front panel 41 and rear panel have the same shape when viewed from the front. The front panel 41 and rear panel are welded to the front and rear portions of the left and right side beams 39 and cross beams 40, respectively, and close the space enclosed by the left and right side beams 39 and cross beams 40.

[0036] The lower ends of the side beams 39 are fixed by welding or the like to the inner surfaces of the left and right side walls 42 of the bucket 30 at approximately the center of the front-to-rear width. The upper ends of the side beams 39 are rotatably attached to the brackets 31 of the fixed crushing arms 12 by means of support shafts 33.

[0037] 4 is an enlarged cross-sectional view showing the connection or attachment portion of the hanging member 32 to the bracket 31. The bracket 31 is made of a steel plate and is arranged so that its front and back surfaces face left and right. A pair of brackets 31 is provided on the left and right.

[0038] The upper ends of left and right side beams 39, which are bent so as to be parallel in the vertical direction, are sandwiched and positioned between these brackets 31. A support shaft 33 made of a steel pin is inserted from the side through shaft holes 31A, 43 of bracket 31 and side beam 39. A pin 45 is inserted through pin holes 44 in the portion of support shaft 33 that protrudes outward on both the left and right sides of bracket 31. This prevents the support shaft 33 from coming off, and the hanging member 32 is rotatably connected to bracket 31 and, ultimately, to fixed crushing arm 12. The pin 45 is prevented from coming off pin hole 44 by an appropriate prevention mechanism.

[0039] The centers of the left and right widths of the fixed crushing arm 12, the hanging member 32 and the bucket 30 are positioned at the same position in the left and right direction.

[0040] As mentioned above, if the lower end of the hanging member 32 is fixed to the bucket 30, the relative position of the fixed crushing arm 12 with respect to the chimney E is determined to some extent when the bucket 30 is pressed against the chimney E. This poses a problem in that the degree of freedom of the position of the crushing device 100 is reduced.

[0041] Conversely, if the crushing device 100 is positioned with priority given to the relative position of the fixed crushing arm 12 with respect to the chimney E, problems may arise such as the bucket 30 being pressed excessively against the chimney E or a gap being created between the chimney E and the bucket 30.

[0042] Therefore, in this embodiment, the lower end of the hanging member 32 is rotatably connected to the bucket 30. This embodiment will be described below.

[0043] This embodiment is based on the basic embodiment described above. In the following explanation, changes or improvements from the basic embodiment will be mainly explained, and explanations of the same parts will be basically omitted. For ease of understanding, components with the same names will be assigned the same reference numerals whenever possible, regardless of whether the configuration itself is different or the same.

[0044] Figure 5 shows a side view of the crushing device 100 of this embodiment, in contrast to Figure 2. As shown in the figure, in the crushing device 100 of this embodiment, the lower end of the hanging member 32 is rotatably connected to the bucket 30 by a support shaft 82.

[0045] Figure 6 is a front view showing the hanging member 32 and a portion of the bucket 30 of this embodiment, in contrast to Figure 3. Figure 7 is a left side view showing the hanging member 32 and the entire bucket 30 of this embodiment. For convenience, the hydraulic cylinder 37 and the hinge 36 are omitted.

[0046] As shown in Figure 6, the hanging member 32 is formed symmetrically with respect to the width center O2 of its left and right width. In the left and right direction, the direction toward the width center O2 is referred to as the width direction inner side, and the direction away from the width center O2 is referred to as the width direction outer side. The width center O2 is located at the same position in the left and right direction as the center of the left and right width of the fixed crushing arm 12 and the bucket 30. The fixed crushing arm 12 and the bucket 30 are also formed symmetrically with respect to their width center.

[0047] The left and right side beams 39 integrally have upper end portions 39A that extend in the vertical direction and are spaced apart parallel to each other, inclined portions 39B that extend diagonally from the lower end of the upper end portion 39A outward and downward in the width direction and are longer than the upper end portion 39A, and lower end portions 39C that extend downward from the lower end of the inclined portion 39B in the vertical direction, are spaced apart parallel to each other, and are shorter than the upper end portion 39A and the inclined portion 39B.

[0048] The cross beam 40 extends in the left-right direction, and both ends are connected to positions at approximately the midpoint between the left and right inclined portions 39B.

[0049] The front plate 41 covers the left and right side beams 39 and the cross beam 40 from the front, between the height position of the uppermost end of the upper end 39A and the height position of the lowermost end of the cross beam 40, and is fixed to overlap the front portions (front surfaces) of these. The outer shape of the front plate 41 is the same as the outer shapes of the upper end 39A, the inclined portion 39B, and the cross beam 40 on which the front plate 41 is overlapped.

[0050] The back panel (not shown) is similar to the front panel 41 except that it is secured to the rear surfaces (back faces) of the left and right side beams 39 and the cross beam 40 by overlapping them.

[0051] The lower ends 39C of the left and right side beams 39 are rotatably connected to the inner surfaces of the left and right side walls 42 of the bucket 30 by support shafts 82. The support shafts 82 define a rotation axis C10 that extends in the left-right direction, and the hanging member 32 is rotatable in the front-to-rear direction relative to the bucket 30 around this rotation axis C10.

[0052] The support shaft 82 is fixed to the inner surface of the side wall 42 by welding or the like. The support shaft 82 is located at approximately the center of the front-to-rear width at the upper end of the inner surface of the side wall 42, and protrudes inward in the width direction. A shaft hole 83 is formed in the lower end 39C of the side beam 39, and the support shaft 82 is inserted into the shaft hole 83 so as to be slidable and rotatable. A flange 84 is formed on the inner end of the support shaft 82 protruding from the shaft hole 83 in the width direction to prevent the lower end 39C of the side beam 39 from coming off.

[0053] The rotation axes C10 and C8 correspond to the first and second rotation axes in the claims. The rotation axes C10 and C8 are parallel to each other, and in particular to the rotation axes C2 and C3.

[0054] Incidentally, as will be described in detail later, when connecting the suspending member 32 to the bracket 31 of the fixed crushing arm 12, the suspending member 32 must be held upright above the bucket 30 as shown in Figure 7. At this time, it would be inconvenient if the suspending member 32 were to rotate freely.

[0055] In addition, when removing the hanging member 32 from the bracket 31 of the fixed crushing arm 12 after the crushing operation is completed, or when storing the bucket 30 after removal, it is necessary to keep the hanging member 32 in an upright position above the bucket 30.

[0056] Therefore, the crushing device 100 of this embodiment is provided with a restriction mechanism 85 for restricting the rotation of the hanging member 32 relative to the bucket 30.

[0057] As shown in Figures 6 and 7, the regulating mechanism 85 includes a first regulating member 86 for regulating the forward rotation of the suspending member 32, and a second regulating member 87 for regulating the backward rotation of the suspending member 32.

[0058] The restriction mechanism 85 also includes a mating connection member 88 to which the first restriction member 86 and the second restriction member 87 are connected. The connection member 88 includes a first upper connection member 88A to which the upper end of the first restriction member 86 is connected, a first lower connection member 88B to which the lower end of the first restriction member 86 is connected, a second upper connection member 88C to which the upper end of the second restriction member 87 is connected, and a second lower connection member 88D to which the lower end of the second restriction member 87 is connected.

[0059] The restriction mechanism 85 also includes connectors 89 provided at both ends of the first restriction member 86 and the second restriction member 87 to connect to the respective connection members 88 .

[0060] In this embodiment, the first restricting member 86 and the second restricting member 87 are formed of flexible strips such as chains, wires, and ropes, specifically chains. The first upper connecting member 88A is formed of an eyebolt. The first lower connecting member 88B is formed of a holed bracket fixed to the bucket 30 and a screw-type D-ring connected to it. The second upper connecting member 88C is formed of a U-bolt. The second lower connecting member 88D is formed of a screw-type D-ring. The connector 89 is formed of a hook. In particular, a tensioning mechanism 90 for tightening the first restricting member 86 is attached to the connector 89 provided at the lower end of the first restricting member 86. The combination of the first restricting member 86 and the tensioning mechanism 90 is called a chain block.

[0061] The first upper connection members 88A are provided on the left and right side surfaces of the hanging member 32 at a height position above the inclined portions 39B. The first lower connection members 88B are provided at a position rear of the upper ends of the left and right side walls 42 of the bucket 30, rearward of the support shaft 82, and protrude upward from the bucket 30. The second upper connection members 88C are provided in pair on the left and right at a height position above the inclined portions 39B on the front surface of the hanging member 32, and in this embodiment, are provided at the same height as the first upper connection members 88A. The second lower connection members 88D are provided in pair on the left and right at the upper end of the inner surface of the front wall 91 of the bucket 30, and in this embodiment, are provided at the same left-right position as the second upper connection members 88C and protrude upward from the bucket 30.

[0062] By using the restricting mechanism 85, the suspending member 32 can be held in an upright position on the bucket 30 as shown in FIG. 7 . To do this, for example, first, the suspending member 32 is temporarily fixed in the upright position, and then the connectors 89 at the upper and lower ends of the second restricting member 87 are connected to the second upper connecting member 88C and the second lower connecting member 88D, respectively. Next, the connectors 89 at the upper and lower ends of the first restricting member 86 are connected to the first upper connecting member 88A and the first lower connecting member 88B, respectively. This holds the suspending member 32 in a generally upright position. However, since there is still some wobbling, the first restricting member 86 is pulled and tensioned using the tensioning mechanism 90. This locks the suspending member 32 in an upright position, more specifically, in an upright position along the vertical direction, and the forward and backward rotation of the suspending member 32 is almost completely restricted.

[0063] If possible, the tightening mechanism 90 may be omitted. The order in which the first restricting member 86 and the second restricting member 87 are connected may be reversed. The tightening mechanism 90 may be provided on the second restricting member 87.

[0064] In this manner, in this embodiment, the lower end of the hanging member 32 is rotatably connected to the bucket 30. Therefore, the degree of freedom in the position of the crushing device 100 can be improved.

[0065] For example, as shown in Figure 8, in the basic embodiment, the hanging member 32 and the bucket 30 are fixed, and the hanging member 32 and the bucket 30 simply rotate together around the rotation axis C8 relative to the fixed crushing arm 12. Therefore, when the bucket 30 is pressed against the chimney E as shown in the figure, if the fixed crushing arm 12 is moved rearward, the bucket 30 will tilt rearward more significantly. This limits the amount of rearward movement of the fixed crushing arm 12.

[0066] In contrast, as shown in Fig. 9, in the case of this embodiment, the suspending member 32 can rotate about the rotation axis C10 relative to the bucket 30. Therefore, even if the fixed crushing arm 12 is moved rearward when the bucket 30 is pressed against the chimney E as shown, the suspending member 32 rotates clockwise relative to the bucket 30 as shown, so that the fixed crushing arm 12 can be moved rearward while maintaining the posture of the bucket 30. Therefore, the fixed crushing arm 12 can be moved rearward by a large distance. This also improves the degree of freedom in the position of the crushing device 100. The crushing device 100 can move relatively freely without being significantly affected by the position of the bucket 30 or the shape and size of the chimney E.

[0067] Although not shown, in the basic embodiment, if the crushing device 100 is positioned with priority given to the relative position of the fixed crushing arm 12 with respect to the chimney E, problems may arise such as the bucket 30 being pressed excessively against the chimney E or a gap being created between the chimney E and the bucket 30.

[0068] However, in this embodiment, the suspending member 32 rotates relative to the bucket 30, which makes it possible to absorb such excessive pressure and reduce the gap, thereby solving the above problem.

[0069] In addition, in this embodiment, a regulating mechanism 85 is provided to regulate the rotation of the hanging member 32 relative to the bucket 30, making it easy to connect the upper end 39A of the hanging member 32 to the bracket 31 of the fixed crushing arm 12.

[0070] During this connection work, the bucket 30 is placed on the ground, and the hanging members 32 are held upright using the method described above. Then, scaffolding is created using stepladders or the like on the ground in front of the bucket 30 and inside the bucket 30. Next, the crushing device 100 is lowered, the fixed crushing arms 12 approach the hanging members 32, and the brackets 31 are aligned with the upper ends 39A of the hanging members 32.

[0071] In this state, a worker stands on the scaffold and performs the connection work. The rotation of the hanging member 32 is restricted and the position is maintained in an upright position, making it easy to perform the connection work.

[0072] Once the connection is complete, the first and second restricting members 86 and 87 are removed to release the restriction. Even in this case, the fixed crushing arm 12 supports the upper end 39A of the suspending member 32, so the suspending member 32 is maintained in an upright position.

[0073] Although the embodiments of the present disclosure have been described in detail above, various other embodiments and modifications of the present disclosure are possible.

[0074] For example, the restricting mechanism 85 may have a configuration other than that described above, and may be configured to restrict the rotation of the hanging member 32 with a detachable bolt or pin, or may be configured to support the hanging member 32 with a bar, etc. The restricting mechanism 85 may also be configured to hold the hanging member 32 in an inclined position rather than upright.

[0075] The structure does not have to be a tower-like structure such as a chimney, and may be any structure.

[0076] In the above embodiment, the fixed crushing arm 12 and the movable crushing arm 13 are attached to the swivel base 11 that can rotate relative to the base 10. However, such a swivel configuration is not necessarily required, and the fixed crushing arm 12 and the movable crushing arm 13 may be attached directly to the base 10 or a fixed object thereto. The same applies to the camera 4.

[0077] The embodiments of the present disclosure are not limited to the above-described embodiments, and all modifications, applications, and equivalents encompassed within the spirit of the present disclosure as defined by the claims are included in the present disclosure. Therefore, the present disclosure should not be interpreted as being limited, and can be applied to any other technology that falls within the spirit of the present disclosure. [Explanation of symbols]

[0078] 12 Fixed Crushing Arm 13 Movable crushing arm 30 buckets 32 Hanging member 85 Regulatory Mechanisms 100 Crushing equipment E. Chimney C8, C10 Rotating axis

Claims

1. A crushing device for crushing a structure, comprising: Fixed crushing arm, A movable crushing arm rotatably connected to the fixed crushing arm; a bucket suspended from the fixed crushing arm to receive crushed pieces falling outside the structure; a suspending member that connects the fixed crushing arm and the bucket so as to suspend the bucket; Equipped with The lower end of the hanging member is rotatably connected to the bucket. A crushing device characterized by:

2. The movable crushing arm is connected to the fixed crushing arm so as to be rotatable around a reference rotation axis extending in a horizontal direction, The lower end of the hanging member is connected to the bucket so as to be rotatable about a first rotation axis parallel to the reference rotation axis. The crushing device according to claim 1.

3. The upper end of the hanging member is connected to the fixed crushing arm so as to be rotatable about a second rotation axis parallel to the reference rotation axis. The crushing device according to claim 2.

4. a restricting mechanism for restricting the rotation of the hanging member relative to the bucket; The crushing device according to claim 1.

Images