JP2011106185A - Removing device for lattice-like ditch cover - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate removal of various gratings having different intervals of bearing bars. <P>SOLUTION: The removing device 10 for a lattice-like ditch cover includes: a pair of supporting arms 30, 30 which are arranged at a predetermined interval in the direction of the ditch D in a manner of extending to the upper side of the grating G from the lower end of a frame 20 movably placed on a side of the ditch D; and a pair of hooks 40, 40 respectively arranged on the front ends of the supporting arms 30, 30, and allowed to go downward through the intervals between a plurality of the bearing bars B of the grating G so that they can be engaged with cross bars C from the lower side. At least one of the pair of hooks 40, 40 is loosely movable in the direction of the ditch D. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to an apparatus for removing a lattice-shaped groove lid for removing a lattice-shaped groove cover mounted on an upper portion of a groove such as a side groove.

  In Patent Document 1, a plurality of bearing bars that are attached to an upper portion of a groove such as a side groove and extend in the width direction of the groove are arranged at equal intervals in the groove direction and intersect with these bearing bars. A grating attaching and detaching device for attaching and detaching a grating in which a cross bar extending in the direction is attached to a pair of arm members arranged at a predetermined interval in the direction of the groove, and attached to the tips of both arm members by screws. A pair of hook members that can enter the gap between the gratings of the grating, a grip portion attached to the rear ends of both arm members, a support leg that extends downward toward the tip side of the arm members, and a support A grating attaching / detaching device including a caster attached to a lower end of a leg is disclosed. When removing the grating attached to the side groove using this grating attaching / detaching device, first, the handle part is lifted upward so that the hook members at the ends of both arm members enter the gap between the bearing bars, and the hook members are crossed. Lock the bar from below. Next, by lowering the handle portion downward, the grating locked to the hook member is lifted with the support leg as a fulcrum.

Japanese Patent Laid-Open No. 10-060994

  In recent years, the interval between multiple bearing bars has been reduced for the purpose of improving the appearance when installed in a groove and preventing the heel part of a female heel from being pinched between bearing bars. Various gratings have been developed. When such a grating with different spacing between the bearing bars is removed by the above-described grating attaching / detaching device, the distance between the hook members attached to the ends of the pair of arm members is constant. May be caught by the bearing bar and the hook members may not be allowed to enter the gap between the bearing bars at the same time. Therefore, in the above grating attaching / detaching device, when the pair of arm members are installed so as to be aligned in the groove direction, the hook member is formed in the groove in the groove direction in the hook member, so that the hook member is formed in the groove on the support arm. It is attached so that the position can be adjusted in the direction. However, when this grating attaching / detaching device is used to remove various gratings having different bearing bar intervals, the hook member is loosened for each grating having different bearing bar intervals, and the hook members are then grooved. It was troublesome to have to adjust the position in the direction of. In addition, since the spacing between the bearing bars is not precisely made, even when trying to remove a large number of gratings with the same bearing bar spacing, one hook is caught on the bearing bar. In some cases, the hook members cannot be made to enter from the gap between the bearing bars at the same time, and the distance between the hook members has to be adjusted for each grating. Therefore, an object of the present invention is to solve such a problem.

  In order to solve the above-described problems, the present invention provides a plurality of bearing bars that are attached to the upper part of a groove such as a side groove and extend in the width direction of the groove, and are arranged at predetermined intervals in the groove direction and intersect with these bearing bars. A grid-shaped groove lid removal device for removing a grid-shaped groove lid in which a cross bar extending in a direction is arranged, and extends from a frame movably installed on the side of the groove to the upper side of the grid-shaped groove lid A pair of support arms arranged at a predetermined interval in the direction of the groove, and provided at the tip of each support arm to enter downward from the gap between the plurality of bearing bars and enter the crossbar from below An apparatus for removing a lattice-shaped groove lid provided with a pair of hooks to be locked is provided, wherein either one of the pair of hooks is allowed to move freely in the direction of the groove. To do .

  In the grid-shaped groove lid removing device configured as described above, since either one of the pair of hooks provided at the distal ends of the pair of support arms can be moved in the direction of the groove, the pair of support arms When the respective hooks at the tip end part of the hook are moved downward from the gaps between the plurality of bearing bars and locked to the cross bar from the lower side, the other hooks can be moved downward from the gaps between the bearing bars. From the gap between the bearing bars, one hook that can be moved in the direction of the groove is moved to a position where it can enter downward. Both hooks can be moved downward from the gap between the bearing bars, and both hooks can easily enter the cross bar from the gap between the bearing bars. So it can be locked from the side.

  In the lattice-shaped groove lid removing device configured as described above, it is preferable that the pair of hooks can be freely moved in the direction of the groove. In this way, the hooks are moved downward from the gap between the bearing bars. It is not necessary to adjust to the position where it can enter in advance, and both hooks that can be moved in the direction of the groove are moved from the gap between the bearing bars to a position where they can enter downward, so that the lattice-shaped groove lids with different intervals between the bearing bars Even when it is removed, both hooks can be further moved downward from the gap between the bearing bars and locked to the cross bar from the lower side.

  In the lattice-shaped groove lid removing device configured as described above, the support arm is preferably supported so as to be rotatable with respect to the frame, and the support arm can be stored at a position along the frame. In this case, the grid-like groove lid removing device can be stored compactly when not in use.

It is a perspective view of the removal apparatus of the lattice-like groove cover of this invention. It is a perspective view which shows the state which accommodated the support arm of FIG. 1 in the position along a flame | frame. It is a partial expansion perspective view of the front-end | tip part of a support arm. It is a figure which shows the procedure which removes grating using the removal apparatus of a grid | lattice-like groove cover.

  Hereinafter, an embodiment of a lattice-shaped groove lid removing device according to the present invention will be described with reference to the drawings. In the grid-shaped groove lid removing apparatus 10 according to the present invention, a plurality of bearing bars B that are mounted on the upper part of a groove D such as a side groove and extend in the width direction of the groove D are arranged at predetermined intervals in the direction of the groove D. In addition, the frame G is a lattice-shaped groove lid on which a plurality of cross bars C extending in a direction intersecting with the bearing bars B is removed, and is a frame that is movably installed on the side of the groove D. A pair of support arms 30, 30 extending from the lower end of 20 to the upper side of the grating G and arranged at a predetermined interval in the direction of the groove D, and the grating provided at the tip of each support arm 30, 30 G includes a pair of hooks 40, 40 that enter downward from the gaps between the plurality of bearing bars B and are engaged with the cross bar C from below, and at least one of the pair of hooks 40, 40 One or Re was possible idler in the direction of the grooves D. Below, this grid | lattice-like groove cover removal apparatus 10 is explained in full detail. The grating G of the lattice-shaped groove cover described in the present embodiment will be described using a bearing bar B having a thickness of 7 mm and a spacing between the bearing bars B of 28.3 mm.

  As shown in FIG. 1, the lattice-shaped groove lid removing device 10 includes a U-shaped frame 20 that is vertically opened and opened downward. A pair of support arms 30, 30 are attached to the lower end of the frame 20 via a pair of connecting brackets 21, 21 so as to be rotatable in the vertical direction on the front side of the frame 20. As shown in FIG. 2, the support arms 30 and 30 are in a storage position where the support arms 30 and 30 are stored along the vertically rising frame 20, and a position rotated 140 ° downward from the frame 20 as shown in FIG. It is designed to rotate between the use position. Locking bolts 26, 26 that prevent the support arms 30, 30 from rotating are provided on the upper portions of the connection brackets 21, 21. The locking bolts 26, 26 are provided on the support arms 30, 30 that have been rotated to the use position. The support arms 30 and 30 are prevented from rotating from the use position by being locked to the base end portion. Locking pins 22, 22 for protruding the support arms 30, 30 to the storage position are projected from an intermediate portion in the vertical direction of the frame 20. In addition, wheels 24 and 24 are rotatably attached to the rear portions of the connection brackets 21 and 21 via a shaft 23, and a load is placed on the front portions of the connection brackets 21 and 21 for transportation. The mounting table 25 is provided. Cutouts 25 a and 25 a for rotating the support arms 30 and 30 are formed at both left and right ends of the mounting table 25.

  As shown in FIGS. 1 and 2, a connecting shaft 31 penetrating both the supporting arms 30, 30 is fitted and fixed to the distal ends of the pair of supporting arms 30, 30. A pair of hooks 40, 40 are attached. As shown in FIG. 3, each hook 40 is made of a sheet metal member having a thickness of 6 mm in this embodiment, and is engaged with the cross bar C from below when it is entered downward from the gap between the plurality of bearing bars B. A notch 41 for stopping is formed. As shown in FIG. 3, each hook 40 is rotatable with respect to the connection shaft 31 and is connected between the outer surface of the support arm 30 and an annular stopper 32 fitted and fixed to the tip of the connection shaft 31. It can be moved at intervals of 10 mm in the extending direction. In the present embodiment, the hooks 40 and 40 can move at intervals of 10 mm, but the present invention is not limited to this length. In a state where both the support arms 30 and 30 are aligned in the direction of the groove D, the hooks 40 and 40 can be moved in the direction of the groove D. Further, locking plates 33, 33 for fixing the hooks 40, 40 to the rear sides of the hooks 40, 40 are fixed to the support arms 30, 30. These locking plates 33 and 33 are prevented from rotating from a position depending on the support arms 30 and 30 at right angles, and when the grating G is lifted, the gratings lifted by stopping the rotation of the hooks 40 and 40. G is stabilized so as not to rotate.

  A procedure for removing the grating G using the lattice-shaped groove lid removing device 10 will be described. When the lattice-shaped groove lid removing device 10 is stored when not in use, the support arms 30, 30 are placed in the storage position along the frame 20, and the notches 41, 41 of both hooks 40, 40 are inserted into the frame 20. The locking pins 22 are locked. When the grating G is removed using the lattice-shaped groove lid removing device 10, as shown in FIG. 4A, the lattice-shaped groove lid with the support arms 30 and 30 in the storage position is used. The detaching device 10 is moved so that both support arms 30 and 30 are aligned in the direction of the groove D on the side of the groove D in which the grating G is mounted. Next, the hooks 40, 40 are unlocked from the locking pins 22, 22 so that the tips of the support arms 30, 30 are on the upper side of the grating G as shown in FIG. Rotate. At this time, the hooks 40, 40 at the tips of the support arms 30, 30 may hit the bearing bar B of the grating G and cannot enter downward from the gap between the bearing bars B. In the grid-shaped groove lid removing device 10 according to the present invention, both the hooks 40, 40 can move freely in the direction of the groove D, so that the frame 20 is swung in the direction of the groove D or the width direction of the groove D. As a result, the hooks 40 and 40 are positioned so as to be able to enter downward from the gaps between the plurality of bearing bars B, and the hooks 40 and 40 are allowed to fall downward from the gaps between the plurality of bearing bars B and enter. it can. Thus, since both the hooks 40 and 40 can move freely in the direction of the groove D, the positions of both the hooks 40 and 40 are adjusted in advance to a position that becomes a gap between the bearing bars B in the direction of the groove D. Without this, the lattice-shaped groove lid removing device 10 can be installed on the side of the groove D. In the above-described work procedure, the hooks 40 are moved to a position where they can enter downward from the gap between the bearing bars B by swinging the frame 20. The hooks 40, 40 may be moved directly in the direction of the groove D without swinging the frame 20 after the part is turned to be above the grating G.

  Next, by moving the frame 20 in the front-rear direction and tilting it backward with the wheels 24, 24 as fulcrums, the notches 41, 41 of both hooks 40, 40 are crossed as shown in FIG. Lock to bar C. When the frame 20 is further tilted backward with the wheels 24 and 24 as fulcrums, the base ends of the support arms 30 and 30 are locked to the locking bolts 26 and 26, and the support arms 30 and 30 are rotated in the use position. The grating G is lifted by the lever principle.

  When the grating G is lifted to a height that can be moved in the horizontal direction, and then the frame 20 is pulled backward and moved, the grating G can be removed from the groove D as shown in FIG. At this time, since the wheels 24 are provided at the lower end portion of the frame 20, the frame 20 can be moved backward with a light force. Note that the lattice-shaped groove lid removing device 10 can reattach the grating G to the groove D in the same manner as the grating removing operation described above.

  In recent years, a wide variety of gratings having different bearing bar thicknesses and different intervals have been marketed for the purpose of improving the appearance when mounted in a groove. As an example of these, the bearing bar has a thickness of 5 mm, the interval is 25 mm, the thickness is 7 mm, the interval is 8 mm, the thickness is 5 mm, the interval is 10 mm, and the thickness is 3 mm. There is a 9.5 mm grating. In the conventional device for removing the lattice-like groove lid in which the hooks do not move in the direction of the groove, the hooks of the support arms can be inserted through the gaps between the bearing bars of all these gratings. It is difficult to set the interval. Even if the above-mentioned various gratings can be used to set the distance between the support arms through which the both hooks can enter from the gap between the bearing bars, the grating is not manufactured with high accuracy in the gap between the bearing bars. Both hooks fixed in the direction may not be able to enter simultaneously through the gap between the bearing bars.

  In the lattice-shaped groove lid removing device 10 configured as described above, when the support arms 30 and 30 are installed so as to be aligned in the direction of the groove D on the side of the groove D to which the grating G is mounted. Since the pair of hooks 40, 40 provided at the distal ends of the pair of support arms 30, 30 can be moved in the direction of the groove D, the frame 20 is swung in the direction of the groove D or the width direction of the groove D, etc. Thus, the hooks 40 can be moved to a position where they can enter downward from the gap between the bearing bars B. Accordingly, even when various gratings G having different intervals between the bearing bars B are removed, the hooks 40 and 40 can be easily moved downward from the gap between the bearing bars B. Both hooks 40, 40 can be moved downward from the gap between the bearing bars B to be locked to the cross bar C from below.

  Further, in the grating attaching / detaching apparatus described in the prior art, the pair of hooks are attached to the pair of arms so as to be movable in the groove direction by screws, and when the spacing between the bearing bars is different, the screws are loosened and the hooks are grooved. The lattice-shaped groove lid removing device 10 according to the present invention swings the frame 20 because the hooks 40 and 40 can move freely in the direction of the groove D. Thus, the hooks 40 and 40 can be moved to a position where they can enter downward from the gap between the bearing bars B without using a tool such as a screwdriver. Thus, it is possible to easily remove the gratings G having different intervals between the bearing bars B.

  In the grid-shaped groove lid removing device 10 of the present embodiment, both hooks 40 and 40 are allowed to move freely in the direction of the groove D, but either one of the hooks 40 may be allowed to move freely. When one of the hooks 40 is allowed to move in the direction of the groove D and the other hook 40 is not allowed to move in the direction of the groove D, the other hook 40 that does not move is moved downward from the gap between the bearing bars B. Even if the one hook 40 is moved to a position where it can enter downward from the gap between the bearing bars B by swinging the frame 20 in the direction of the groove D or in the width direction of the groove D, etc. Good. In this case, one hook 40 needs to be positioned so as to be able to enter downward from the gap between the bearing bars B. However, as described above, it corresponds to various gratings G having different intervals between the bearing bars B. It becomes possible.

  In the lattice-shaped groove lid removing device 10 configured as described above, the support arms 30 and 30 are supported rotatably with respect to the frame 20 via the connection brackets 21 and 21, and the support arms 30 and 30 are supported. Can be stored in a position along the frame 20, so that when the lattice-shaped groove lid removal device 10 is not used, the support arms 30, 30 can be stored in a storage position along the frame 20 for compact storage. .

  DESCRIPTION OF SYMBOLS 10 ... Lattice-like groove cover removal apparatus, 20 ... Frame, 30 ... Support arm, 40 ... Hook.

Claims (3)

A plurality of bearing bars that are attached to the upper part of a groove such as a side groove and extend in the width direction of the groove are arranged at predetermined intervals in the direction of the groove, and a cross bar that extends in a direction intersecting the bearing bars is arranged. An apparatus for removing a lattice groove cover for removing the lattice groove cover,
A pair of support arms extending from the frame movably installed on the side of the groove to the upper side of the lattice-shaped groove lid and arranged at a predetermined interval in the direction of the groove;
Lattice-like groove cover removal device provided with a pair of hooks provided at the front end portions of the respective support arms to enter downward from the gaps between the plurality of bearing bars and to be engaged with the cross bar from below. In
An apparatus for removing a lattice-like groove lid, wherein any one of the pair of hooks is movable in the groove direction. In the removal device of the lattice-like groove cover according to claim 1,
An apparatus for removing a lattice-shaped groove lid, wherein the pair of hooks are movable in the groove direction. In the removal device of a lattice-like groove cover according to claim 1 or 2,
An apparatus for removing a lattice-shaped groove lid, wherein the support arm is rotatably supported with respect to the frame, and the support arm can be stored at a position along the frame.

Images