Panel attachment

Abstract

To provide an attachment for a panel allowing troublesome operation for holding of the panel with a panel holding part and releasing the holding to be suppressed.SOLUTION: An arm connection part 31 of an attachment 28 for a panel is attached on a tip of an arm of a back-hoe. A swingable body 32 is swingably connected on the arm connection part 31. A panel holding part 33 holding a wall member 17 is arranged on the swingable body 32. The panel holding part 33 is provided with a supporting plate 39, a hook piece 40, and an engaging round steel bar 41. The holding plate 39 contacts a periphery (a buried plate 25) of a hole 25a of the wall member 17. The hook piece 40 projects so as to pass through the hole 25a from the supporting plate 39 to clamp the buried plate 25 between the supporting plate 39 and itself. The engaging round steel bar 41 projects from the supporting plate 39 to pass through the hole 25a. The engaging round steel bar 41 is allowed to move between a fixation position where the buried plate 25 is clamped between the supporting plate 39 and itself and an open position which is a position closer to a center of the hole 25a than that of an inner peripheral surface of the hole 25a.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a panel attachment. [Background technology]

[0002] It is known that slopes of ground can be protected and stabilized by slope protection retaining walls. Such slope protection retaining walls are constructed, for example, using the Pan Wall method. The Pan Wall method is carried out as follows: Panel-shaped wall materials are placed along the slope. Holes extending in the thickness direction of the wall material are formed in the wall material. These holes connect to holes formed in the slope. Core materials are inserted into the holes in the wall material and the holes in the slope, and anchoring material is injected. The core materials are connected to the wall material. Backfill material is injected between the wall material and the slope.

[0003] Patent Document 1 describes the use of a backhoe to move panels such as wall materials. A panel attachment is attached to the tip of the arm of the backhoe. The panel attachment includes an arm connection part, a swinging body, and a panel holding part. The arm connection part can be attached to the tip of the arm of the backhoe. The swinging body is connected to the arm connection part so as to be able to swing in the width direction of the backhoe. The panel holding part is provided on the swinging body and is able to hold the panel.

[0004] By attaching the panel attachment to the tip of a backhoe's arm, the panel can be moved using the backhoe. When using a backhoe in the pan wall construction method, the wall material is held by the panel holding part of the panel attachment, and then the backhoe is driven to move the wall material to the slope. Furthermore, after the wall material is placed along the slope, the panel holding part's hold on the wall material is released, allowing the wall material to be removed from the panel holding part.

[0005] The panel holding portion holds the wall material using bolt holes and bolts. That is, the wall material is held by the panel holding portion by fastening the bolts passed through the wall material by screwing them into the screw holes of the panel holding portion. On the other hand, when the wall material is to be removed from the panel holding portion, the bolts are loosened and pulled out from the screw holes and the wall material, thereby releasing the panel holding member from holding the wall material. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 10-184294 Summary of the Invention [Problem to be solved by the invention]

[0007] However, with the panel attachment described in Patent Document 1, it takes time and effort to hold the wall material in the panel holding portion and to release that hold. That is, to hold the wall material with the panel holding portion, a bolt must be passed through the wall material, and then the bolt must be screwed into the bolt hole and tightened. This work is time-consuming. Furthermore, to release the wall material from the panel holding portion, the bolt must be loosened and removed from the screw hole and the wall material. This work is also time-consuming. [Means for solving the problem]

[0008] The means for solving the above problems and their effects will be described below. A panel attachment that solves the above problem includes an arm connection portion, a swinging body, and a panel holding portion. The arm connection portion can be attached to the tip of a backhoe arm. The swinging body is connected to the arm connection portion so as to be swingable in the width direction of the backhoe. The panel holding portion is provided on the swinging body and is capable of holding a panel to be moved using the backhoe. The panel holding portion includes a support plate, a hook piece, and a fixing member. The support plate is adapted to contact the periphery of a hole formed in the panel. The hook piece protrudes from the support plate so as to pass through the hole, and is capable of sandwiching the periphery of the hole in the panel between the support plate and the hook piece. The fixing member protrudes from the support plate so as to pass through the hole. The fixing member is movable between a fixed position where the periphery of the hole in the panel is sandwiched between the support plate and the hook piece, and an open position which is closer to the center of the hole than the inner circumferential surface of the hole.

[0009] According to the above configuration, a panel attachment (arm connection portion) is connected to the tip of the arm of a backhoe. Then, by driving the backhoe, the hook piece of the panel holding portion is passed through the hole in the panel, and the periphery of the hole in the panel is sandwiched between the support plate of the panel holding portion and the hook piece. Furthermore, by moving the fixing member of the panel holding portion from the open position to the fixed position, the periphery of the hole in the panel is sandwiched between the fixing member and the support plate. As a result, the panel is held by the panel holding portion. This makes it possible to move the panel using the backhoe. Furthermore, the panel holding by the panel holding portion is released by moving the fixing member from the fixed position to the open position. After moving the fixing member to the open position, the backhoe is driven to remove the hook piece from the hole in the panel, thereby removing the panel from the panel holding portion. As described above, the panel holding by the panel holding portion and the release of that hold are performed by inserting and removing the hook piece into and from the hole in the panel and by moving the fixing member between the fixed position and the open position. This reduces the time and effort required to hold the panel with the panel holding portion and to release that hold.

[0010] It is conceivable that the hook piece, which clamps the periphery of the hole in the panel between itself and the support plate, and the fixing member, which clamps the periphery of the hole in the panel between itself and the support plate, are capable of moving relative to the panel in the circumferential direction of the inner surface of the hole.

[0011] With this configuration, when the panel is held by the panel holder, the panel can move relative to the hook piece and the fixing member in the circumferential direction of the inner circumferential surface of the hole. This relative movement allows the panel to rotate around the center line of the hole, making it possible to adjust the position of the panel in the rotational direction.

[0012] In the panel attachment, the swinging body may include a rotating body that can rotate about a rotation centerline that extends in a direction intersecting the swing centerline of the swinging body. The rotating body is provided with the panel holding portion that is connected to a hole in the panel. A support is provided on the rotating body at a position away from the panel holding portion, and supports the panel by being inserted into a hole in the panel other than the hole.

[0013] According to the above configuration, the panel holding portion and the support provided on the rotating body are connected to the hole in the panel, and the support is inserted into a hole separate from the hole in the panel to support the panel. When the panel is held by the panel holding portion in this manner, the panel is supported by the support. Therefore, even if the panel is relatively large, the panel can be stably held. Furthermore, since the rotating body can rotate about a rotation center line extending in a direction intersecting the oscillation center line of the rocking body, the panel can be rotated about the rotation center line, and the position of the panel in the rotation direction can be adjusted.

[0014] The support may be formed in a cylindrical shape protruding from the rotor, and the tip of the support in the protruding direction is cut along a plane inclined relative to the center line of the support, so that the tip becomes thinner.

[0015] According to this configuration, the tip of the support body in the protruding direction becomes thinner toward the tip, which makes it easier to insert the support body into the separate hole in the panel. The support may be fixed to the rotating body by a screw shaft and a nut.

[0016] When removing the support member from the other hole in the panel after releasing the panel from the panel holding portion, it may be difficult to remove the support member. With the above configuration, even in this case, the support member can be easily removed from the other hole in the panel by loosening the nut that secures the support member to the rotating body, releasing the fixation, and detaching the support member from the rotating body.

[0017] In the above-mentioned panel attachment, it is conceivable that the panel holding portion is provided with a stopper that can fix the fixing member so that it cannot move from the fixed position, and that can release the fixation of the fixing member at the fixed position and allow it to move to the open position.

[0018] According to this configuration, the fixing member can be fixed at the fixing position by the fastener. Fixing the fixing member at the fixing position in this way makes it possible to prevent the fixing member from unintentionally moving from the fixing position while the panel is being held by the panel holding portion, thereby preventing the panel from being released from being held by the panel holding portion.

[0019] In the panel attachment, the hook piece may be movable between a locked position away from the center of the hole in the panel and an unlocked position closer to the center than the locked position, and the panel holder may include a locking mechanism that fixes and releases the hook piece in the locked position.

[0020] According to the above configuration, when the panel is held by the panel holding portion, the hook piece is fixed in the locked position by the locking mechanism. At this time, the hook piece pinches the periphery of the hole in the panel between the panel holding portion and the support plate. When releasing the panel from the panel holding portion, if it is difficult to remove the hook piece from the hole in the panel, the hook piece is released from the lock position by the locking mechanism, and then the hook piece is moved from the locked position to the unlocked position. This brings the hook piece closer to the center line of the hole in the panel, making it easier to remove the hook piece from the hole.

[0021] In the above-mentioned panel attachment, it is conceivable that the rocking body has an insertion hole formed therein into which an operating rod extending horizontally can be inserted. With this configuration, the panel held by the panel holding portion can be moved to the desired location using a box hoe, and then the worker can operate the operating rod inserted into the insertion hole to fine-tune the position of the panel to the appropriate position. [Brief explanation of the drawings]

[0022] [Figure 1] A cross-sectional view showing a slope protection retaining wall. [Figure 2] A cross-sectional view showing the wall material of the above-mentioned slope protection retaining wall and its surroundings. [Figure 3] FIG. 10 is a side view showing how the wall material is moved to the slope in the pan wall construction method. [Figure 4] FIG. 10 is a plan view showing the backhoe when the wall material is moved onto the slope. [Figure 5]FIG. 2 is a side view showing the panel attachment of the first embodiment. [Figure 6] FIG. 2 is a bottom view showing the panel attachment. [Figure 7] 3 is a perspective view showing a swinging body and a panel holding portion in the panel attachment. FIG. [Figure 8] 10 is a rear view showing the area around the hole in the wall material held by the panel attachment. FIG. [Figure 9] FIG. 10 is a side view showing a panel attachment according to a second embodiment. [Figure 10] FIG. 2 is a bottom view showing the panel attachment. [Figure 11] FIG. 2 is a side view showing the panel attachment. [Figure 12] 10 is a rear view showing the area around the hole in the wall material held by the panel attachment. FIG. [Figure 13] 3 is a schematic diagram showing a hook piece and a locking mechanism of the panel attachment. FIG. [Figure 14] 3 is a schematic diagram showing a hook piece and a locking mechanism of the panel attachment. FIG. [Figure 15] 10A and 10B are schematic diagrams showing other examples of hook pieces and locking mechanisms. [Figure 16] 10A and 10B are schematic diagrams showing other examples of hook pieces and locking mechanisms. DETAILED DESCRIPTION OF THE INVENTION

[0023] [First embodiment] A first embodiment of a panel attachment will be described below with reference to FIGS.

[0024] The slope protection retaining wall 11 shown in Figure 1 is formed by the pan wall method. The slope protection retaining wall 11 includes a wall material 17, an anchoring material 15, a core material 16, and a backfill material 19. A plurality of the wall materials 17 are arranged horizontally and vertically along the slope 13 of the ground 12. The core materials 16 are inserted into holes 14 formed to extend from the slope 13 toward the ground 12. The core materials 16 are connected to the wall materials 17. The anchoring materials 15 are injected into the holes 14. Grout and mortar, for example, can be used as the anchoring materials 15. The backfilling material 19 is injected between the wall materials 17 and the slope 13. For example, grout, mortar, cement bentonite, and concrete can be used as the backfilling material 19.

[0025] <Connection structure between wall material 17 and core material 16> As shown in Figure 2, a stepped opening 18 is formed in the wall material 17. The stepped opening 18 penetrates the wall material 17 in the thickness direction (approximately the left-right direction in Figure 2). The portion of the stepped opening 18 closer to the outside (the right side in Figure 2) is a large section 18a. A cylindrical injection guide 24 is inserted into the stepped opening 18. This connects the inside of the injection guide 24 to the hole 14 in the ground 12. The anchoring material 15 is injected into the hole 14 through the injection guide 24, and the anchoring material 15 is also injected into the injection guide 24. Furthermore, the core material 16 is inserted into the hole 14 through the inside of the injection guide 24.

[0026] An embedded plate 25 is installed in advance on the bottom surface of the large portion 18a in the stepped opening 18. The embedded plate 25 is fixed to the bottom surface of the large portion 18a. A hole 25a is formed in this embedded plate 25. The hole 25a is connected to the stepped opening 18 and allows the injection guide 24 to be inserted. The hole 25a in the embedded plate 25 functions as a hole formed in the panel (wall material 17).

[0027] A washer 20 is disposed on the outer surface (the surface on the right side in FIG. 2) of the embedded plate 25. A washer 21 is disposed on the outer surface (the surface on the right side in FIG. 2) of the washer 20. The end of the core material 16 passes through the embedded plate 25, washer 20, and washer 21, and a nut 22 is screwed onto the end of the core material 16. This connects the core material 16 to the wall material 17.

[0028] Then, backfill material 19 is injected between the slope 13 and the wall material 17. Thereafter, the nut 22 is tightened, and the wall material 17 is fixed to the ground 12 by the core material 16 and anchoring material 15. A cap 23 is fitted into the large portion 18a of the stepped opening 18 in the wall material 17. The area inside this cap 23 and around the nut 22 is filled with mortar.

[0029] <Moving wall material 17 to slope 13 using the Pan Wall construction method> As shown in Figure 3, wall materials 17 used in the Pan Wall construction method are stacked in the thickness direction and placed on the ground, and are moved from that position to the slope 13 using a backhoe 26. A panel attachment 28 for holding the wall material 17 is attached to the tip of an arm 27 of the backhoe 26. The panel attachment 28 is connected to the wall material 17 placed on the ground. Then, the wall material 17 connected to the panel attachment 28 is moved to the slope 13 by driving the backhoe 26, as shown in Figure 4. The panel attachment 28 is then detached from the wall material 17.

[0030] <Panel attachment 28> As shown in Figure 5, panel attachment 28 includes arm connection part 31, swinging body 32, and panel holding part 33. Arm connection part 31 can be attached to the tip of arm 27 (Figure 3) of backhoe 26. Arm connection part 31 includes pin 34 that extends in the vertical direction in Figure 5.

[0031] As shown by the arrow in Figure 6, the swinging body 32 is connected to the arm connection part 31 so as to be able to swing in the width direction of the backhoe 26. The swinging body 32 is equipped with a pin receiving part 35 through which the pin 34 passes, and a housing 32a connected to the pin receiving part 35. The pin receiving part 35 is located at the end of the swinging body 32 closer to the arm connection part 31. The swinging body 32 is able to rotate around the center line of the pin 34, and this rotation causes it to swing relative to the arm connection part 31 as described above. Therefore, the center line of the pin 34 becomes the swing center line of the swinging body 32 relative to the arm connection part 31.

[0032] As shown in FIG. 5, the housing 32a of the swinging body 32 is connected to the end of the pin receiving portion 35 opposite to the end on the pin 34 side. The housing 32a may be connected to the pin receiving portion 35 in a state tilted forward more leftward than the state shown in FIG. 5. The angle of inclination when tilting the housing 32a forward in this manner preferably matches the inclination of the slope 13 on which the wall material 17 is disposed. The housing 32a is provided with a cylindrical body 36. An insertion hole 37 is formed inside the cylindrical body 36. A horizontally extending operating rod 38 (FIG. 6) can be inserted into the insertion hole 37. By inserting the operating rod 38 into the insertion hole 37 in this manner, an operator can operate the operating rod 38 to swing the swinging body 32 as described above.

[0033] The panel holding portion 33 is provided on the housing 32a of the swinging body 32. The panel holding portion 33 is capable of holding and releasing the wall material 17. When the wall material 17 is moved using the backhoe 26 (FIG. 3), the wall material 17 is held by the panel holding portion 33 of the panel attachment 28 attached to the tip of the arm 27 of the backhoe 26. After the backhoe 26 is driven to move the wall material 17 to a desired position, the wall material 17 is released from the panel holding portion 33, thereby making it possible to remove the wall material 17 from the panel holding portion 33.

[0034] <Panel holding part 33> The panel holding portion 33 includes a support plate 39, a hook piece 40, and a locking round bar 41. The support plate 39 is located at the end of the housing 32a of the swing body 32 opposite the end on the pin receiving portion 35 side. When the panel holding portion 33 holds the wall material 17, the support plate 39 comes into contact with the periphery of the hole 25a in the wall material 17, i.e., with the embedded plate 25. The hook piece 40 is fixed to the support plate 39 and protrudes from the support plate 39. When the panel holding portion 33 holds the wall material 17, the hook piece 40 passes through the hole 25a and sandwiches the embedded plate 25 between the support plate 39 and the hook piece 40.

[0035] The locking bar 41 is formed in a rod shape. The locking bar 41 includes a straight portion 42, a handle portion 43, and a locking portion 44. The straight portion 42 extends in the same direction as the protrusion of the hook piece 40 relative to the support plate 39, and penetrates the housing 32a and the support plate 39. The straight portion 42 is capable of sliding in the longitudinal direction of the straight portion 42 relative to the housing 32a, and is also capable of rotating around the center line of the straight portion 42.

[0036] The handle portion 43 is formed by bending the end of the straight portion 42 that is farther from the support plate 39 at approximately 90° relative to the straight portion 42. The end of the straight portion 42 that is closer to the support plate 39 protrudes from the support plate 39 so as to pass through the hole 25a in the wall material 17. The locking portion 44 is formed by bending the end at approximately 90° relative to the straight portion 42.

[0037] As shown in FIG. 7, the support plate 39 is formed with a slit 45 through which the straight portion 42 of the locking bar 41 passes. The locking portion 44 of the locking bar 41 can be accommodated in this slit 45. The locking bar 41 slides and rotates as described above to move the locking portion 44 between the fixed position and the released position. At this time, the locking portion 44 serves as a fixing member that moves between the fixed position and the released position. The fixed position is the position where the locking portion 44 moves as shown in FIG. 7. The released position is the position where the locking portion 44 is accommodated in the slit 45.

[0038] <Movement of the locking round bar 41 (locking portion 44) between the fixed position and the released position> The locking bar 41 shown by a two-dot chain line in Figures 5 and 6 indicates the locking bar 41 when it is in the open position. When moving the locking bar 41 from the open position to the locked position, the locking bar 41 is slid to the left in Figures 5 and 6 to remove the locking portion 44 of the locking bar 41 from the slit 45 (Figure 7). Thereafter, the locking bar 41 is rotated around the center line of the straight portion 42 to move the locking bar 41 to the locked position. The locking bar 41 shown by a solid line in Figures 5 and 6 indicates the locking bar 41 when it is in the locked position.

[0039] When the wall material 17 is held by the panel attachment 28, the locking bar 41 is positioned in the open position (two-dot chain lines in FIGS. 5 and 6). In this state, the hook piece 40 is passed through the hole 25a in the wall material 17, as shown in FIG. 5. Furthermore, the periphery of the hole 25a in the wall material 17, i.e., the embedded plate 25, is sandwiched between the hook piece 40 and the support plate 39. At this time, the locking portion 44 of the locking bar 41 is housed in the slit 45, and is therefore positioned closer to the center of the hole 25a than the inner circumferential surface of the hole 25a.

[0040] Thereafter, by sliding and rotating the locking bar 41 as described above, the locking bar 41 moves from the open position to the fixed position (solid lines in FIGS. 5 and 6). When the locking bar 41 moves to the fixed position, the locking portion 44 sandwiches the periphery of the hole 25a in the wall material 17, i.e., the embedded plate 25, between the locking portion 44 and the support plate 39. This causes the wall material 17 to be held by the panel attachment 28.

[0041] Figure 8 shows the wall material 17 held by the panel attachment 28 as viewed from the left side of Figure 5. At this time, the hook piece 40 and the locking portion 44 of the locking round bar 41 can move relative to the wall material 17 in the circumferential direction of the inner circumferential surface of the hole 25a. Therefore, the wall material 17 can rotate around the center line of the hole 25a.

[0042] On the other hand, when releasing the panel attachment 28 from holding the wall material 17, the locking round bar 41 is moved from the fixed position to the open position by following the steps described above in reverse. By moving the locking round bar 41 to the open position in this way, the panel attachment 28 releases the wall material 17 from being held thereby.

[0043] <The structure surrounding the locking bar 41> 5 and 6, the panel holding portion 33 includes a spring 46 and a stopper 47. The spring 46 biases the locking bar 41 toward the housing 32a in a direction away from the support plate 39. Therefore, when the locking bar 41 is slid from the open position as described above, the sliding is performed against the biasing force of the spring 46. The stopper 47 can fix the locking bar 41 so that it cannot move from the fixed position when the panel attachment 28 holds the wall material 17, and can release the locking bar 41 from the fixed position to allow it to move to the open position.

[0044] 6, the stopper 47 includes a flat plate 48 and a hinge 49. The flat plate 48 is formed to protrude from the outer peripheral surface of the straight portion 42 of the locking bar 41 and extends in the longitudinal direction of the straight portion 42. The flat plate 48 is fixed to the straight portion 42. Therefore, the flat plate 48 is positioned as shown by the solid line when the locking bar 41 is in the locked position, and is positioned as shown by the two-dot chain line when the locking bar 41 is in the released position.

[0045] Meanwhile, the hinge 49 can move between the position shown by the solid line and the position shown by the two-dot chain line in Figure 6. When the wall material 17 is held by the panel attachment 28, that is, when the locking bar 41 is in the fixed position, moving the hinge 49 to the position shown by the two-dot chain line causes the hinge 49 to sandwich the flat plate 48 in the thickness direction. This fixes the locking bar 41 so that it cannot move from the fixed position. More specifically, the locking bar 41 is fixed so that it cannot rotate around the center line of the straight portion 42.

[0046] When the locking bar 41 is moved from the fixed position to the released position, the hinge 49 is moved from the position indicated by the two-dot chain line to the position indicated by the solid line. This releases the flat plate 48 from being pinched by the hinge 49, allowing the locking bar 41 to move from the fixed position. More specifically, rotation of the locking bar 41 around the center line of the straight portion 42 is permitted. In this state, when the locking bar 41 is rotated from the fixed position to a position corresponding to the slit 45 (FIG. 7), the biasing force of the spring 46 moves the locking bar 41 to the released position. At this time, the locking portion 44 of the locking bar 41 is received in the slit 45.

[0047] Next, the operation of the panel attachment 28 will be described. When the wall material 17 is moved using the backhoe 26, the panel attachment 28 (arm connection portion 31) is connected to the tip of the arm 27 of the backhoe 26. Then, by driving the backhoe 26, the hook piece 40 of the panel holding portion 33 of the panel attachment 28 is passed through the hole 25a in the wall material 17. Furthermore, the periphery of the hole 25a in the wall material 17, i.e., the embedded plate 25, is sandwiched between the support plate 39 of the panel holding portion 33 and the hook piece 40. At this time, the locking round bar 41 has been moved to the open position, so the locking portion 44 of the locking round bar 41 is housed in the slit 45. Therefore, the locking portion 44 does not come into contact with the embedded plate 25.

[0048] The locking bar 41 is then moved from the open position to the fixed position by sliding and rotating. This causes the locking portion 44 to sandwich the periphery of the hole 25a in the wall material 17, i.e., the embedded plate 25, between the locking portion 44 and the support plate 39. As a result, the wall material 17 is held by the panel attachment 28. At this time, the stopper 47 is moved to the position shown by the two-dot chain line in Figure 6, so that the locking bar 41 does not move from the fixed position. The wall material 17 held by the panel attachment 28 is moved to the slope 13 of the ground 12 using the backhoe 26.

[0049] The position of the wall material 17 moved to the slope 13 is adjusted by rotating it relative to the hook pieces 40 and the locking portions 44 in the circumferential direction of the inner circumferential surface of the hole 25a, in other words, by rotating it around the center line of the hole 25a. The position of the wall material 17 can also be adjusted by rotating (swinging) the swinging body 32 around the center line of the pin 34 in the arm connecting portion 31. Such rotation of the swinging body 32 is performed by an operator operating an operating rod 38 inserted into an insertion hole 37 of a cylindrical body 36 in the housing 32a.

[0050] After adjusting the position of the wall material 17 as described above, the panel holder 33 releases the wall material 17 from its hold as follows. That is, the stopper 47 is moved to the position shown by the solid line in FIG. 6, allowing the locking bar 41 to move from its fixed position. The locking bar 41 is then rotated so that the locking portion 44 is positioned corresponding to the slit 45. When the locking portion 44 is positioned corresponding to the slit 45, the biasing force of the spring 46 causes the locking bar 41 to slide to the open position. At this time, the locking portion 44 is accommodated in the slit 45. As a result, the panel holder 33 releases the wall material 17 from its hold.

[0051] After the wall material 17 is released from the panel holding portion 33 in this manner, the backhoe 26 is driven to remove the hook piece 40 from the hole 25a of the wall material 17, thereby removing the wall material 17 from the panel holding portion 33.

[0052] According to the present embodiment described above in detail, the following effects can be obtained. (1-1) The panel holding portion 33 of the panel attachment 28 holds and releases the wall material 17 by inserting and removing the hook piece 40 into and from the hole 25a of the wall material 17, and by moving the locking round bar 41 (locking portion 44) between the fixed position and the open position. This reduces the amount of work required to hold and release the wall material 17 with the panel holding portion 33.

[0053] (1-2) When the wall material 17 is held by the panel attachment 28, the swinging body 32 can swing around the center line of the pin 34 relative to the arm connection part 31. Therefore, as shown in FIG. 4, when the backhoe 26 is used to move the wall material 17 onto the slope 13, the backhoe 26 can be positioned at an angle to the slope 13. If the backhoe 26 is positioned directly opposite the slope 13, a large space must be secured for positioning the backhoe 26 in front of the slope 13. On the other hand, if the backhoe 26 is positioned at an angle to the slope 13 as described above, the space required for positioning the backhoe 26 in front of the slope 13 can be kept small.

[0054] (1-3) When the wall material 17 held by the panel attachment 28 is moved to the slope 13 using the backhoe 26, the position can be adjusted by the swinging of the swinging body 32.

[0055] (1-4) The swinging body 32 of the panel attachment 28 is formed with an insertion hole 37 into which a horizontally extending operating rod 38 can be inserted. Therefore, when moving the wall material 17 held by the panel holding portion 33 of the panel attachment 28 to the slope 13 or after the movement, an operator can operate the operating rod 38 inserted into the insertion hole 37. This allows fine adjustment of the position of the wall material 17 to an appropriate position. Furthermore, the operator can use the operating rod 38 to perform such fine adjustment of the position of the wall material 17 from a position away from the wall material 17.

[0056] (1-5) When the wall material 17 is held by the panel attachment 28, the hook piece 40 and the locking portion 44 of the locking round bar 41 can move relative to the wall material 17 in the circumferential direction of the inner circumferential surface of the hole 25a. This relative movement allows the wall material 17 to rotate around the center line of the hole 25a, so the position of the wall material 17 in the rotational direction can be adjusted.

[0057] (1-6) When the wall material 17 is held by the panel holding portion 33 of the panel attachment 28, the locking round bar 41 (locking portion 44) of the panel holding portion 33 is moved to the fixed position. When the locking round bar 41 is in the fixed position, the locking round bar 41 can be fixed so as not to move from the fixed position by the flat plate 48 and hinge 49 of the stopper 47. This prevents the locking round bar 41 from unintentionally moving from the fixed position when the wall material 17 is held by the panel holding portion 33 of the panel attachment 28, thereby preventing the wall material 17 from being released from the hold of the panel holding portion 33.

[0058] [Second embodiment] Next, a second embodiment of the panel attachment will be described with reference to FIGS.

[0059] When the restraining force required to stabilize the ground is large or when the wall material 17 is relatively large, holes 25a (embedded plates 25) are provided in two locations in the wall material 17. The panel attachment of this embodiment is designed to hold such wall material 17, and differs from the first embodiment in that it has a structure for this purpose. Below, the parts of the panel attachment that differ from the first embodiment will be described in detail, and the parts that are the same as those in the first embodiment will be assigned the same reference numerals as in the first embodiment and will not be described in detail.

[0060] Figures 9 to 11 show the panel attachment 28 in this embodiment. Figure 9 shows the panel attachment 28 as seen from the side. Figure 10 shows the panel attachment 28 as seen from below. Figure 11 shows the panel attachment 28 as seen from the side opposite to the side mentioned above.

[0061] As shown in FIG. 10, the pin receiving portion 35 of the swinging body 32 in the panel attachment 28 is provided with a rotation shaft 51. The rotation shaft 51 protrudes in a direction away from the pin 34 of the arm connection portion 31 (to the left in FIG. 10). The center line of the rotation shaft 51 intersects with the center line of the pin 34. The swinging body 32 is provided with a rotating body 52. ​​The rotating body 52 is formed in a rod shape extending in a direction perpendicular to the rotation shaft 51. The rotation shaft 51 passes through the center of the rotating body 52 in the longitudinal direction. The rotating body 52 is capable of rotating around the center line of the rotation shaft 51. The center line of this rotation shaft 51 is the rotation center of the rotating body 52. ​​A cylindrical body 36 is provided on the rotating body 52.

[0062] The housing 32a of the oscillator 32 is provided at one longitudinal end of the rotating body 52. ​​The housing 32a provided on the rotating body 52 is in the state shown in FIG. 9, but may be tilted forward to the left in FIG. 9. The housing 32a is provided with a panel holding portion 33. The panel holding portion 33 includes a support plate 39, a hook piece 40, a locking round bar 41, a spring 46, and a stopper 47. As shown in FIG. 10, a support body 53 is provided at the longitudinal end of the rotating body 52 opposite the end where the housing 32a is provided. The support body 53 is located away from the panel holding portion 33 and is inserted into one of two holes 25a in the wall material 17 shown in FIG. 12, which is different from the hole 25a through which the hook piece 40 of the panel holding portion 33 is inserted. The support body 53 supports the wall material 17 by being inserted into the other hole 25a.

[0063] <Support body 53 and its surrounding structure> The support body 53 is formed in a cylindrical shape that protrudes from the rotating body 52 toward the left in FIG. 10. The support body 53 is fixed to the rotating body 52 by a screw shaft 54 ​​and a nut 55. More specifically, the screw shaft 54 ​​that passes through the rotating body 52 is fixed to the end of the support body 53 on the rotating body 52 side. The support body 53 is fixed to the rotating body 52 by tightening the nut 55 that is threaded onto the screw shaft 54. Furthermore, by loosening the tightened nut 55, the fixation of the support body 53 to the rotating body 52 can be released, and the support body 53 can be separated from the rotating body 52.

[0064] A flange 56 is formed to protrude from the outer peripheral surface of the support 53 at approximately the center in the longitudinal direction. Therefore, when the support 53 is inserted into the hole 25a of the wall material 17, the flange 56 abuts against the embedded plate 25 of the wall material 17. This prevents the support 53 from going too far into the hole 25a. The tip of the support 53 in the protruding direction is cut by a surface 57 that is inclined with respect to the center line of the support 53, as shown in Figure 11, so that it is formed into a shape that tapers toward the tip.

[0065] <Hook piece 40 and surrounding structure> As shown in FIG. 9, the hook piece 40 extends in the same direction as the straight portion 42 of the locking round bar 41. As a result, the hook piece 40 passes through the inside of the housing 32a. The hook piece 40 is supported by the housing 32a via a support shaft 58 that passes through the center of the hook piece 40 in the longitudinal direction. The hook piece 40 can rotate around the center line of the support shaft 58. By rotating around the center line of the support shaft 58, the hook piece 40 can move between a locked position and an unlocked position.

[0066] 13 and 14 show the hook piece 40 in the locked position and the unlocked position, respectively. The locked position is a position where the hook piece 40 is away from the center of the hole 25a when it is inserted through the hole 25a in the wall material 17. When the hook piece 40 is in the locked position, the hook piece 40 sandwiches the embedded plate 25 of the wall material 17 between itself and the support plate 39. On the other hand, the unlocked position is a position closer to the center of the hole 25a than the locked position. When the hook piece 40 is in the unlocked position, it is easier to remove the hook piece 40 from the hole 25a.

[0067] As shown in Fig. 13, the panel holding portion 33 is provided with a locking mechanism 59 that fixes and releases the hook piece 40 in the locked position. The locking mechanism 59 includes a holding shaft 60 and a wedge block 61. The holding shaft 60 is located near a second end, which is one of both longitudinal ends of the hook piece 40 and is the end opposite the first end that protrudes from the support plate 39. The holding shaft 60 extends in the same direction as the support shaft 58, and is supported by the housing 32a as shown in Fig. 9.

[0068] As shown in Fig. 13, the hook piece 40 is fixed in the locked position by sandwiching the wedge block 61 between the retaining shaft 60 and the second end of the hook piece 40. The hook piece 40 is fixed in the locked position when the wall material 17 is held by the panel holding portion 33. When the wedge block 61 is removed from between the retaining shaft 60 and the second end of the hook piece 40, the hook piece 40 is released from the locked position. At this time, the hook piece 40 can be moved to the unlocked position as shown in Fig. 14.

[0069] According to the present embodiment described above in detail, in addition to the effects of the first embodiment, the following effects can be obtained. (2-1) Of the panel holding portion 33 and the support body 53 provided on the rotating body 52 of the panel attachment 28, the panel holding portion 33 is connected to the hole 25a in the wall material 17, and the support body 53 is inserted into a hole 25a in the wall material 17 other than the hole 25a to support the wall material 17. When the wall material 17 is held by the panel holding portion 33 in this manner, the wall material 17 is supported by the support body 53. Therefore, when holes 25a (embedding plates 25) are provided in two locations on the wall material 17, the wall material 17 can be stably held by the panel attachment 28. Furthermore, since the rotating body 52 can rotate around the center line of the rotation shaft 51 at this time, the wall material 17 can be rotated around the center line, and the position of the wall material 17 can be adjusted in the rotation direction.

[0070] (2-2) When the wall material 17 is held by the panel attachment 28, the swinging body 32 can be swung as needed, while the rotating body 52 can be rotated as needed around the center line of the rotation shaft 51. This makes it easy to align the hook pieces 40 and the support bodies 53 with the two holes 25a of the wall material 17 when the wall material 17 is held by the panel attachment 28.

[0071] (2-3) The tip of the support 53 in the protruding direction is cut at a surface 57 that is inclined relative to the center line of the support 53, and is formed into a shape that tapers toward the tip. This makes it easier to insert the support 53 into the hole 25a of the wall material 17.

[0072] (2-4) After releasing the wall material 17 from the panel holding portion 33 of the panel attachment 28, it may be difficult to remove the support 53 from the hole 25a of the wall material 17. Even in this case, by loosening the nut 55 that secures the support 53 to the rotating body 52, releasing the securement and separating the support 53 from the rotating body 52, the support 53 can be easily removed from the hole 25a of the wall material 17.

[0073] (2-5) When the wall material 17 is held by the panel holding portion 33, the hook piece 40 is fixed in the locked position by the locking mechanism 59. At this time, the hook piece 40 sandwiches the embedded plate 25 of the wall material 17 between the support plate 39. If it is difficult to remove the hook piece 40 from the hole 25a of the wall material 17 when the wall material 17 is released from the holding of the panel holding portion 33, the hook piece 40 is released from the lock position by the locking mechanism 59, and then the hook piece 40 is moved from the locked position to the unlocked position. This brings the hook piece 40 closer to the center line of the hole 25a, making it easier to remove the hook piece 40 from the hole 25a of the wall material 17.

[0074] [Other embodiments] The above-described embodiments can be modified, for example, as follows: The above-described embodiments and the following modifications can be combined with each other within the scope of technical compatibility.

[0075] 15 and 16, the locking mechanism 59 may include a retaining shaft 60, a cam 62 fixed to the retaining shaft 60, and a lever 63 for rotating the retaining shaft 60. In this case, as shown in FIG. 15, the hook piece 40 is fixed in the locked position by operating the lever 63 to rotate the retaining shaft 60 so that the cam lobe of the cam 62 abuts the second end of the hook piece 40. Furthermore, the hook piece 40 is released from the locked position by operating the lever 63 to rotate the retaining shaft 60 so that the cam lobe is displaced from the position shown in FIG. 15 in the rotational direction of the retaining shaft 60. At this time, the hook piece 40 can be moved to the unlocked position shown in FIG. 16.

[0076] In the first and second embodiments, the cylindrical body 36 does not necessarily have to be provided. The hook piece 40 of the first embodiment may be made movable between a locked position and an unlocked position like the hook piece 40 of the second embodiment, and a locking mechanism 59 may be provided as in the second embodiment.

[0077] In the first and second embodiments, the stopper 47 does not necessarily have to be provided. In the second embodiment, the support 53 may be fixed to the rotating body 52 so as not to be detachable, or may be formed integrally with the rotating body 52.

[0078] In the second embodiment, the tip of the support 53 does not necessarily have to be cut at the surface 57 . [Explanation of symbols]

[0079] 17...Wall material 25...Recessed plate 25a…hole 28...Panel attachment 31...Arm connection part 32...Oscillator 32a…Housing 33...Panel holding part 37...insertion hole 38...Operation rod 39...Support plate 40...Hook piece 41...Round locking bar 42...Straight section 43...Handle 44...Latching part 47...Clasp 52...rotating body 53...Support 54...Screw shaft 55...Nut 59...locking mechanism

Claims

1. The arm connector includes an arm connecting portion, a swinging body, and a panel holding portion. The arm connection part can be attached to the tip of the arm of a backhoe, The swinging body is connected to the arm connection portion so as to be able to swing in the width direction of the backhoe, The panel holding portion is provided on the swinging body and is capable of holding a panel to be moved using the backhoe. the panel holding portion includes a support plate, a hook piece, and a fixing member; The support plate is in contact with the periphery of the hole formed in the panel, the hook piece protrudes from the support plate so as to pass through the hole, and is capable of clamping the periphery of the hole in the panel between the support plate and the hook piece, The fixing member protrudes from the support plate so as to pass through the hole, and is capable of moving between a fixed position in which it clamps the periphery of the hole in the panel between itself and the support plate, and an open position which is closer to the center of the hole than the inner surface of the hole.

2. A panel attachment as described in claim 1, wherein the hook piece that clamps the periphery of the hole in the panel between itself and the support plate, and the fixing member that clamps the periphery of the hole in the panel between itself and the support plate, are capable of moving relative to the panel in the circumferential direction of the inner surface of the hole.

3. the oscillator includes a rotor that can rotate around a rotation center line that extends in a direction intersecting the oscillation center line of the oscillator, the rotating body is provided with the panel holding portion connected to the hole of the panel, A panel attachment as described in claim 1, wherein a support body is provided at a position on the rotating body away from the panel holding portion, which supports the panel by being inserted into a hole other than the hole in the panel.

4. The support member is formed in a cylindrical shape protruding from the rotor, 4. The panel attachment according to claim 3, wherein the tip of the support body in the protruding direction is cut along a plane inclined relative to the center line of the support body, so that the tip is tapered toward the tip.

5. 5. A panel attachment according to claim 3, wherein the support body is fixed to the rotating body by a screw shaft and a nut.

6. A panel attachment as described in any one of claims 1 to 5, wherein the panel holding portion is provided with a stopper that can fix the fixing member so that it cannot move from the fixed position, and that can release the fixation of the fixing member at the fixed position and allow it to move to the open position.

7. The hook piece is movable between a locked position away from the center of the hole in the panel and an unlocked position closer to the center than the locked position, 7. The panel attachment according to claim 1, wherein the panel holding portion is provided with a locking mechanism that fixes the hook piece at the locked position and releases that fixation.

8. 8. The panel attachment according to claim 1, wherein the swinging body is formed with an insertion hole into which a horizontally extending operating rod can be inserted.

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