JP6832578B2 - Raising tool for side groove lid - Google Patents

Description

The present invention relates to a side groove lid raising tool used when opening a groove lid such as a side groove.

For example, the concrete gutter lid 8B of FIG. 8 and the gutter lid 8 of the grating 8A of FIG. 2 are used for the gutters of a road or the like. The side groove 9 is cleaned for maintenance or the like, and at that time, the side groove lid 8 must be removed. Time has passed since the previous cleaning in the gap ε between the side groove lid 8 and the side portion 92 of the side groove 9, and as shown in FIG. 1, a large amount of clogging F is accumulated in the gap ε. Therefore, it was difficult to remove the side groove lid 8.
Under these circumstances, a device that facilitates the removal of the side groove lid has been proposed (for example, Patent Document 1).

JP-A-2009-263258

However, Patent Document 1 is a "grid-like groove lid removing device" as the name of the invention. In addition to the grating of the grid-like groove lid, many concrete groove lids shown in FIG. 8 are also used for the groove lids of the gutters, and cannot be applied to the concrete groove lids. The gutter lid, in which clogging has accumulated in the gap between the gutter side wall and the gutter side wall, can be removed relatively easily after being raised from the gutter. When raising the concrete groove lid from the gutter, in the past, it was often pried open with a crowbar or the like, but sometimes the concrete groove lid was damaged.

The present invention solves the above problem, makes it compact without damaging the concrete groove lid, can be applied to both grating and concrete groove lid, and is in a laid state where clogging is accumulated in the gutter. It is an object of the present invention to provide a gutter lid raising tool capable of easily raising a gutter lid.

In order to achieve the above object, the gist of the invention according to claim 1 is that a short auxiliary shaft portion extends from one end of a long linear spindle portion in a V shape and extends to the tip thereof. It has a bar member fixed to a cylinder whose axial direction and cylinder hole direction are the same, and a U-shaped hanging portion that is bifurcated from the base end of the short shaft portion, and the tip side of the short shaft portion is the cylinder. A swivel metal fitting that is inserted into the hole, and a retaining tool is attached to the inserted tip portion, and the hanging portion is rotatably attached around the short shaft portion, and the hanging portion. A support shaft connecting both ends and a first locking tool for grazing having a through hole through which the support shaft is inserted at the base end and having an arc-shaped hook at the tip, and the support shaft are inserted through the support shaft. The main portion is a tip portion in the advancing direction related to the flat plate-shaped main portion in which the through hole is provided in the sub portion on the base end side and is connected to the sub portion and the plate width direction is aligned with the axial direction of the support shaft. The side groove lid raising tool is provided with a second locking tool for a concrete groove lid provided with a claw portion that is bent and erected with respect to the flat plate surface of the above.
Here, the "concrete groove lid" refers to a lid made of concrete or reinforced concrete that closes the upper surface opening of the side groove, and means a lid provided with a notch on at least one of them as shown in FIG.
In claim 1, the side groove lid raising tool according to claim 2 has an L-shaped hook piece fixed to the cylinder body, while the support shaft is arranged downward with respect to the cylinder body to form the claw portion. A vertically long hole having a long vertical direction is formed in a portion where the main portion of the second locking tool hits the hook piece, and the through hole is made into a long hole having a long vertical direction. The second locking tool is rotated around a shaft, and the second locking tool can be detachably hooked on the hook piece through a protruding portion of the hook piece through the vertically elongated hole. And. The side groove lid raising tool according to claim 3 is provided with a pair of the sub-parts made of a plate-shaped rib in which the second locking tool is upright with respect to the plate surface of the main part according to claim 1 or 2. , Both ribs are separated from each other, the through hole is provided in the protruding plate portion protruding from the base end side of the main portion to the support shaft side, and the base end portion is used as a substrate portion, and the hook extends from here. Two of the first locking tools made of a plate body, further provided with a coil spring, and two said first locking tools sandwiched by compressing the coil spring between the two protruding plate portions. The support shaft is inserted through the support shaft, and the two first locking tools are brought into contact with the opposing inner surfaces of the respective projecting plate portions by receiving an urging force due to the elastic restoration of the coil spring. .. The side groove lid raising tool according to the fourth aspect of the present invention is in a state in which the support shaft is arranged downward with respect to the tubular body, the second locking tool is hooked on the hook piece, and the hook is locked. The substrate portion of the first locking tool is formed so as to project downward from the protruding plate portion of the second locking tool.

The gutter lid raising tool of the present invention is compact and can be carried by one operator, and can be applied to both grating and concrete gutter lids. It is also easy to use and does not require much force. It exerts excellent effects such as being able to raise the gutter lid.

It is one form of the raising tool of the side groove lid of this invention, and is the whole perspective view which arranged the claw part on the notch opening of the concrete groove lid. It is a partial front view which shows the appearance of hooking the hook related to the raising tool of the gutter lid of FIG. 1 on the grating crossbar. It is a partial cross-sectional view of the raising tool of the side groove lid which shows the movement of the 1st locking tool and the 2nd locking tool shown in FIG. From the state of FIG. 2, it is a side view of the side groove lid raising tool under the state where the crossbar is parallel to the flow path and the L-shaped hook piece side is facing the front and the hook is stowed. It is a side view of the raising tool of the side groove lid which was put into the suspended state by removing the second locking tool from the hook piece from the state of FIG. It is a front view which looked at the raising tool of the side groove lid from the left side of the paper surface of FIG. It is a front view of the raising tool of the gutter lid rotated 180 ° about the short shaft part from the state of FIG. FIG. 5 is an explanatory perspective view in which a second locking tool related to a raising tool for the side groove lid in the state of FIG. 7 is inserted into a notch opening of a concrete groove lid. It is an exploded perspective view of the 1st locking tool, the 2nd locking tool, and a coil spring. It is a perspective view of the state in which the first locking tool, the second locking tool, and the coil spring are assembled so that the support shaft is inserted.

Hereinafter, the removing tool for grating according to the present invention will be described in detail.
1 to 10 are one form of a gutter lid raising tool (hereinafter, also simply referred to as “raising tool”) of the present invention, FIG. 1 is an overall perspective view thereof, and FIG. 2 is a hook hooked on a crossbar. A front view, FIG. 3 is a partial cross-sectional view showing the movements of the first locking tool and the second locking tool, FIG. 4 is a partial side view under the state where the hook is stowed from FIG. 3, and FIG. 5 is from FIG. A side view of the raising tool in which the second locking tool is removed and suspended, FIG. 6 is a front view of the raising tool viewed from the left side of the paper surface of FIG. 5, and FIG. 7 is a view centering on the short axis portion from the state of FIG. A front view rotated by 180 °, FIG. 8 is a perspective view in which the second locking tool of FIG. 7 is inserted into the notch opening of the concrete groove lid, and FIG. 9 shows the first locking tool and the second locking tool. , And an exploded perspective view of the coil spring, FIG. 10 shows a perspective view in which the first locking tool, the second locking tool, and the coil spring are assembled so as to be inserted into the support shaft. In order to make the drawing easier to understand, the hunting of the cross-sectional display of the bearing bar 81 in FIG. 4 is omitted.

The side groove lid raising tool T includes a bar member 1, a swivel fitting 2, a support shaft 3, a first locking tool 4, and a second locking tool 5.
The bar member 1 includes a main shaft portion 11, a sub shaft portion 12, and a tubular body 13. A bar member 1 is formed by bending diagonally upward from one end 111 of a long linear spindle portion 11 in a V-shape to extend a short sub-shaft portion 12 and fixing a tubular body 13 to the tip thereof. In the main shaft portion 11 and the sub-shaft portion 12 of the present embodiment, for example, a metal solid shaft member of about 1 m is used as a main part, a linear main part 55 of a long portion of about 85 cm is secured, and one end 111 thereof is removed. It is bent in a shape and extended by about 10 cm to form an ascending inclined portion 12a of the sub-shaft portion 12, and further, at the tip of the ascending inclined portion 12a, the angle is changed in the horizontal direction and extended by about several cm, and the sub-shaft portion 12 is extended. The horizontal end portion 12b of the above is set (FIG. 3). The other end of the spindle 11 serves as a grip portion 112 that is gripped by hand. A non-slip tape or the like is appropriately applied to the grip portion 112.

The cylinder body 13 is a metal cylinder, and here, a socket for connecting a straight pipe having the same diameter of a pipe joint is used. The tubular body 13 is fixed to the tip 122 of the sub-shaft portion 12 so that the axial direction of the main shaft portion 11 and the hole direction of the tubular hole 130 are in the same direction (FIG. 6). The axial direction and the hole direction are the same in order to facilitate the work of the raising tool T, and if the directions in which the two directions are directed as shown in FIG. 6 are substantially the same, they are regarded as the same direction in the present invention. The tip 122 of the sub-shaft portion 12 is fixed to the lower outer surface of the tubular body 13 in a state where the center line of the tubular hole 130 in the hole direction is in the vertical direction. The "vertical direction" referred to in the present invention is the vertical direction in the state of use of the main raising tool T in which the tubular body 13 stands up, and is the vertical direction of the paper surface in FIG.

Further, the bar member 1 of the present embodiment is provided with an L-shaped hook piece 15 and a plate-shaped contact member 19.
The hook piece 15 is an L-shaped plate piece material having a main portion 15a and a protruding portion 15b protruding upward from the main portion 15a, and is a tubular body on the opposite side of the tubular body 13 to which the sub-shaft portion 12 is fixed as shown in FIG. The plate surface of the main portion 15a is fixed to the outer surface of the 13 so as to stand upright. When viewed from the side view of FIG. 4, the thick surface of the hook piece 15 appears vertically long in the vertical direction. A protruding portion 15b extends upward from the upper edge of the outer tip portion of the standing main portion 15a to form a hooking portion for the second locking tool 5.
The plate-shaped contact member 19 is composed of a bent plate piece matched to a portion bent from the main shaft portion 11 to the sub-shaft portion 12, and is fixed to the bent portion from the lower side as shown in FIG. 2 when viewed from the front. The contact member 19 has an arcuate lower surface line when viewed from the front, and the main shaft portion 11 is tilted as shown by the arrow in FIG. 7 with the bending points of the main shaft portion 11 and the sub-shaft portion 12 of the bar member 1 as fulcrums to tilt the side groove lid 8. (Details will be described later).

The swivel fitting 2 has a U-shaped hanging portion 22 that is bifurcated from the base end 211 of the short shaft portion 21, and the short shaft portion 21 is inserted into the tubular hole 130, and the inserted tip portion 212 is inserted. This is a mounting bracket to which the retaining tool 29 is attached to the suspension portion 22 so as to be rotatably attached to the center of the tubular hole of the tubular body 13. Under the state of FIG. 2 in which the tubular body 13 is upright, the hanging portion 22 is suspended from the tubular body 13 so as to be swivelable.
The U-shaped hanging portion 22 here uses a U-shaped metal fitting of a shackle used for slinging. A solid metal short shaft portion 21 is erected on the top of the U-shaped suspension portion 22 and fixed by welding, and a male screw portion is formed on the tip portion 212 of the short shaft portion 21. A nut of a retaining tool 29 larger than the tubular hole 130 is screwed into the tip portion 212 of the short shaft portion 21 inserted into the tubular hole 130 so that the hanging portion 22 does not fall off, and a hairpin stopper 291 is further attached. Reference numeral 24 indicates a washer.

The support shaft 3 is a shaft member connecting both end portions 222 of the U-shaped suspension portion 22. When the raising tool as shown in FIG. 7 is used, the axial direction of the support shaft 3 and the axial directions of the main shaft portion 11 and the sub shaft portion 12 are arranged so as to be orthogonal to each other in the right side view of the figure. The support shaft 3 of the present embodiment is a bar metal fitting paired with the U-shaped metal fitting of the shackle used for the U-shaped hanging portion 22. The support shaft 3 which is a bar metal fitting here is provided with a knob 31 at one end, and a male screw portion is formed at the other end. The U-shaped suspension portion 22 is formed with a female threaded portion at a corresponding portion of the male threaded portion.

The first locking tool 4 is a locking metal fitting for grating 8A having a through hole 410 through which the support shaft 3 is inserted at a base end portion 41 and an arc-shaped hook 46 at the tip end portion. The base end portion 41 referred to in the present invention is a portion close to the support shaft 3, and the tip end portion 45 is a portion far from the support shaft 3. Two first locking tools 4 are attached to the raising tool T of the present embodiment. The first locking tool 4 is a single piece as shown in FIG. 9 in which a metal flat plate material is laser-cut by a laser processing machine, a base end portion 41 is a disk-shaped substrate portion 41a, and a hook 46 extends from the base end portion 41. It consists of a plate. The first locking tool 4 to which a support shaft 3 having a smaller shaft diameter than this is inserted through the through hole 410 is rotatably attached to the support shaft 3. The hook 46 has a size such that when the hook 46 is rotated around the support shaft 3, the tip portion of the hook 46 lightly hits the inside of the rounded portion 220 of the U-shaped hanging portion 22, and if a slight force is applied by hand, the hook 46 is U. It is sized to pass through the character-shaped hanging portion 22.

The second locking tool 5 is provided with a through hole 510 through which the support shaft 3 is inserted in the sub portion 51 on the base end side, and the tip portion 552 in the advancing direction related to the flat plate-shaped main portion 55 coupled to the sub portion 51. This is a locking metal fitting for a concrete groove lid 8B provided with a claw portion 59 that is bent at a right angle to the flat plate-shaped main portion 55 and stands upright. The base end side of the second locking tool 5 in the present invention is the side close to the support shaft 3, and the tip end portion 552 is a portion far from the support shaft 3. The flat plate-shaped main portion 55 is a flat plate-shaped body that is connected to the sub portion 51 and whose plate width direction is aligned with the axial direction of the support shaft 3, and has a claw portion at the tip portion 552 in the advance direction of the main portion 55 far from the support shaft 3. 59 is provided.
The second locking tool 5 of the present embodiment includes a pair of sub-parts 51 composed of horizontally long plate-shaped ribs 51A as shown in FIG. 9 in an upright state with respect to the plate surface of the flat plate-shaped main portion 55, and both ribs 51A are separated from each other. A through hole 510 is provided in a protruding plate portion 512 that is parallel to each other and stands up against the flat plate-shaped main portion 55 and protrudes from the base end side of the main portion 55 to the support shaft 3 side. When the second locking tool 5 is arranged from the chain line state to the solid line state in FIG. 3, both ribs 51A are close to each other on both inner sides of the shaft portion 221 of the U-shaped suspension portion 22 as shown in FIG. And. Then, the through hole 510 provided in the protruding plate portion 512 protruding from the main portion 55 toward the base end side where the support shaft 3 is present is an elongated hole having a long vertical direction (FIGS. 3 and 9). As shown in FIG. 6, the tip portion of the rib 51A is inclined toward the tip side to reach the plate surface of the flat plate-shaped main portion 55, and when the second locking tool 5 is erected, it is suspended in a U shape as shown in FIG. The rib 51A is inserted into the portion 22 so that the second locking tool 5 can be brought into contact with the hook piece 15.
The flat plate-shaped main portion 55 has a rectangular flat plate shape except for a notch portion on the base end side that avoids the substrate portion 41a of the first locking tool 4, and is a tip portion 552 in the advancing direction away from the support shaft 3, as shown in FIG. It is bent at a right angle to the flat plate surface of the main portion 55, and the claw portion 59 stands up and extends. The claw portion 59 stands up by bending at a right angle to the side view as shown in FIG. 3 on the side opposite to the side where the rib 51A standing up on the flat plate surface of the main portion 55 is present. The substantially rectangular main portion 55 is arranged such that the short side of the flat plate surface is in the three support shaft directions and the long side is in the advance direction. At the tip of the leading portion 55 in the advancing direction, the claw portion 59 that bends in a different advancing direction and hits the lid lower surface 86a near the notch 83 of the concrete lid 8B is the plate width direction (short) of the main portion 55. Hand side) It is formed extending over the entire area. Further, the claw portion 59 is provided with an overhanging portion 591 that protrudes outward from the plate width of the main portion 55. This is to increase the number of surfaces to be locked to the concrete groove lid 8B to enhance the function as the raising tool T. The height at which the claw portion 59 is bent with respect to the main portion 55 and stands upright is set to a height at which the second locking tool 5 can descend in the notch 87 in FIG. 7, and is perpendicular to the paper surface in the same figure. The length of the claw portion 59 including the overhanging portion 591 extending in the direction is set to be smaller than the plan view length of the notch portion 87 (the length in the vertical direction of the paper surface of FIG. 7).

Further, the second locking tool 5 is provided with a vertically elongated hole 550 for hooking on the hook piece 15. As shown in FIG. 3, the support shaft 3 is arranged downward with respect to the tubular body 13 and lifted so that the claw portion 59 is on the upper side so that the main portion 55 of the second locking tool 5 comes into contact with the hook piece 15. A vertically elongated hole 550 having a long vertical direction is formed. The through hole 510 is a long hole having a long vertical direction, whereby the second locking tool 5 is rotated around the support shaft 3 to get over the protruding portion 15b of the hook piece 15, and as shown in the figure. The second locking tool 5 can be detachably hooked through the vertically elongated hole 550 through the protruding portion 15b of the hook piece 15. The second locking tool 5 hooked on the L-shaped hook piece 15 over the protruding portion 15b is locked by the protruding portion 15b in FIG. 3 by its own weight, and no external force as shown by the white arrow in the figure is applied. As long as you keep it hooked.

Further, in the present embodiment, the coil spring 6 is provided, and the two first locking tools 4 are pressed and urged on the inner surfaces of the pair of second locking tools 5, respectively. A support shaft 3 inserts and supports two first locking tools 4 which are sandwiched by compressing a coil spring 6 between both projecting plate portions 512. The reason why two first locking tools 4 are provided is that the stability and safety of the grating 8A when it is lifted can be improved by supporting the grating 8A at two points rather than lifting it by one point. Then, the two first locking tools 4 each come into contact with the opposing inner surfaces of the protruding plate portions 512 by receiving the urging force due to the elastic restoration of the coil spring 6. The two plate-shaped first locking tools 4 inserted through the support shaft 3 have both plate surfaces that stick to each other and are difficult to peel off as they are. It will be easier to handle if both are always in contact with the inner surfaces of the pair of projecting plate portions 512 under the urging of the coil springs 6. Further, even when the first locking tool 4 is rotated to be in the state shown in FIG. 7, the first locking tool 4 is held in the pressed state by the protruding plate portion 512 by receiving the elastic urging force of the coil spring 6. .. Therefore, when the concrete groove lid 8B is to be raised by using the second locking tool 5, the first locking tool 4 does not inadvertently rotate and fall. Smooth the raising work of the concrete groove lid 8B.

In addition, under the state of FIG. 4 in which the support shaft 3 is arranged downward with respect to the tubular body 13 and the second locking tool 5 is locked to the hook piece 15, the protruding plate portion 512 of the second locking tool 5 The substrate portion 41a of the first locking tool 4 is a raising tool T that is formed so as to project downward. The substrate portion 41a is formed in a disk portion as shown in FIGS. 2 to 4, and projects downward from the protruding plate portion 512 in the state of FIG. 4. Otherwise, when the second locking tool 5 is locked to the hook piece 15 and descends or hits the upper surface 8a or the road surface 7 of the side groove lid 8, the second locking tool 5 is pushed up and FIG. This is because it falls off carelessly like the chain line of. The substrate portion 41a is projected downward from the protruding plate portion 512 to prevent the above countermeasures. Make it easy to carry.

Next, one usage of this raising tool T will be described.
(A) When the gutter lid 8 is grating When the gutter lid 8 is grating 8A, first, the first locking tool 4 is hung down, while the second locking tool 5 is hooked on the hook piece 15 and held there. Make it in the state of being made. The first locking tool 4 is held by the urging force of the coil spring 6 on the protruding plate portion 512 of the second locking tool 5, but with a light hand force exceeding the urging force, for example, from the chain line position in FIG. It can be hung down like the solid line position. If the second locking tool 5 is in the hanging state as shown in FIG. 5, if the claw portion 59 is lifted upward while pulling outward with respect to the support shaft 3 as shown by the chain line in FIG. As shown by the solid line in the figure, the hook can be held by hooking on the hook piece 15 beyond the protruding portion 15b.

Next, it is placed on the grating 8A so that the hook 46 dodges one bearing bar 81 and enters the slit SL well to catch the crossbar 82. The grating 8A has a rectangular parallelepiped shape with a standardized overall shape, and is usually composed of a bearing bar 81, a crossbar 82, and a side plate 83 (FIGS. 2 and 4). A large number of bearing bars 81 and crossbars 82 orthogonal to the bearing bars 81 are formed in a grid pattern, and side plates 83 are fixed to both side ends of each bearing bar 81 to form a rectangular parallelepiped. The grating 8A is placed in a gutter 9 such as a drainage groove (FIG. 4). In the figure, reference numeral u indicates a flow path.
The width of the slit SL differs depending on the grating 8A, but the width of the slit SL can be easily adjusted by pinching both substrate portions 41a by hand against the elastic restoring force of the coil spring 6 with the two first locking tools 4. The corresponding alignment can be adjusted and the hook 46 can be guided to the crossbar 82. When one first locking tool 4 is sufficient, the remaining first locking tool 4 is held at the chain line position in FIG.
Subsequently, the hook 46 (chain line in FIG. 2) of the first locking tool 4 is submerged in the crossbar 82 near the side plate 83 of the grating 8A, and the grating 8A is locked to the crossbar 82 so that the grating 8A can be lifted. (Solid line in FIG. 2). A plate-shaped contact member 19 fixed to the bent portion of the bar member 1 is placed on the upper surface 921 of the gutter side portion 92.

After that, when the operator grasps the grip portion 112 of the spindle portion 11 by hand and applies a force downward to the spindle portion 11 in the direction of the arrow in FIG. 2, the crossbar 82 is set with the portion of the contact member 19 as a fulcrum. Lift it up and raise the grating 8A integrated with it.
Even if a large amount of clogging F is clogged between the gutter 8A and the gutter 9 with a lid, the grating 8A can be easily raised from the gutter 9 by the principle of the gutter. Once the grating 8A is raised from the gutter 9 and even a part of the grating is raised, the resistance to the clogging F is weakened and it becomes easy to handle, and the grating 8A can be easily taken out from the gutter 9.

(B) When the gutter lid is a concrete groove lid When the gutter lid 8 is a concrete groove lid 8B, for example, starting from the solid line state of FIG. 3 used as the grating raising tool T, first, the first used for the grating 8A. (1) The locking tool 4 is rotated around the support shaft 3 from the solid line position to the chain line position in the figure to raise the hook 46. Further, the second locking tool 5 is pushed up in the direction of the white arrow in the figure to release the hooked locking state of the second locking tool 5 on the L-shaped hook piece 15, and rotates around the support shaft 3. Then, after passing through the chain line position, the state of the second locking tool 5 of FIGS. 5 and 6 is obtained.

Next, since the claw portion 59 faces the main shaft portion 11 side in the states of FIGS. 5 and 6, the short shaft portion 21 in which the second locking tool 5 is inserted and held in the tubular body 13 is inserted from the state of FIG. Rotate 180 ° to the center. Hold the second locking tool 5 in your hand, and rotate the swivel bracket 2, the support shaft 3, the first locking tool 4, and the coil spring 6 that are integrated with the second locking tool 5 by 180 ° to bring them into the state shown in FIG. ..

Subsequently, the claw portion 59 is arranged above the notch opening 870 formed by the notch 87 at the portion covered by the concrete groove lid 8B to be removed from the gutter 9 (FIG. 1). Then, the second locking tool 5 is lowered below the notch opening 870, and the contact member 19 is placed on the lid upper surface 86b (upper surface 8a of the side groove lid 8) of the adjacent concrete lid 8B.

After that, the claw portion 59 is set so as to hit the lower surface 86a of the lid near the notch 87 of the concrete groove lid 8B from below (FIG. 7). After that, the operator pushes down the spindle portion 11 and rotates it in the direction of the arrow in FIG. 7 with the checkered bent portion of the bar member 1 as a fulcrum. Then, the concrete groove lid 8B with the gutter 9 covered is lifted as shown by the chain line in FIG. 8 and can be easily raised. For a long time, the gutter 9 was covered with a concrete groove lid 8B, and the concrete groove lid 8B in a state where the gap ε with the gutter 9 was filled with a clogging F such as earth and sand was also based on the principle of 梃. Can be easily woken up. Once the concrete groove lid 8B is raised from the gutter 9, it is separated from the clogging F to eliminate resistance, and the concrete groove lid 8B can be easily removed from the gutter 9.

Since the side groove lid raising tool T configured in this way includes the first locking tool 4 and the second locking tool 5, in addition to the invention of Patent Document 1 that can correspond to the grating 8A, the concrete groove lid 8B It can also be used as a raising tool T. The gutter lid 8 includes not only the grating 8A but also the concrete groove lid 8B shown in FIG. 8, and it is very useful if there is a main raising tool T that can be applied to both of them. In the case of the concrete groove lid 8B, when the gap ε with the side groove 9 is filled with a clogging F such as earth and sand, the work of taking out the concrete groove lid 8B at the initial stage requires a special effort. I tried to raise the concrete groove lid 8B with a crowbar or the like, but it was troublesome and often damaged the concrete.
On the other hand, when the main raising tool T is used, the claw portion 59 of the second locking tool 5 easily descends the notch opening 870 of the concrete groove lid 8B from below to the lid lower surface 86a of the concrete groove lid 8B. The claw portion 59 can be applied. Since the bar member 1 is provided with a bent portion at the boundary portion between the main shaft portion 11 and the sub-shaft portion 12, this can be used as a fulcrum, and if the grip portion 112 is held in the hand and a force is applied downward, the lid can be formed. In principle, the side groove lid 8 can be easily raised from the solid line position in FIG. 8 to the chain line state. If the concrete groove lid 8A with the lid is raised, it will be separated from the clogging F, so that it will be easy to handle and the removal will proceed smoothly.

Further, since the bar member 1 to which the tubular body 13 is fixed, the swivel metal fitting 2 having the hanging portion 22, and the support shaft 3 are provided, the first locking tool 4 for the grating 8A and the concrete groove are provided. Switching to each of the second locking tools 5 for the lid 8B is smooth and easy to use.
When the L-shaped hook piece 15 and the vertically elongated hole 550 are provided, the second locking tool 5 is hooked on the hook piece 15 by using the vertically elongated hole 550, and the second locking tool 4 is used when the first locking tool 4 is used. The tool 5 does not get in the way, causing grating with a lid on the gutter 9, and the picking work proceeds smoothly.
Further, when the coil spring 6 is provided and the elastic restoring force of the coil spring 6 is used to press and urge the substrate portion 41a of the first locking tool 4 against the protruding plate portion 512 of the second locking tool 5. With the hook 46 arranged at the upper position as shown in FIG. 7, the concrete groove lid 8B with the side groove 9 covered by the second locking tool 5 is raised, and the picking operation proceeds smoothly. It is excellent in operability for each of the raising work of the grating 8A and the raising work of the concrete groove lid.

In addition, under the state where the second locking tool 5 is locked to the hook piece 15, the substrate portion 41a of the first locking tool 4 protrudes downward from the protruding plate portion 512 of the second locking tool 5. Once formed, even when the raising tool T is placed so that the first locking tool 4 touches the ground, the substrate portion 41a only touches the ground, and the second protruding plate portion 512 does not touch the ground. When the second protruding plate portion 512 reaches the ground, the second locking tool 5 does not come off from the hook piece 15. Easy-to-use raising tool T because the second locking tool 5 does not carelessly come off from the hook piece 15 even when the raising tool T is temporarily placed on the ground when the first locking tool 4 is used or carried. It has become.

Further, even if the bar member 1, the swivel fitting 2, the support shaft 3, the first locking tool 4, the second locking tool 5, and the coil spring 6 are present in the raising tool T, Patent Document 1 Compared to the above, it is compact and can be carried by one worker and is easy to handle. Can be stored without taking up space. Nevertheless, it is an excellent one that can be used for both the grating 8A and the concrete groove lid 8B as a raising tool T. Since the structure is simple, robust, and compact, it is inexpensive and has excellent durability.
As described above, the raising tool T of the main groove lid exerts various excellent effects described above and is extremely useful.

The present invention is not limited to the one shown in the above embodiment, and various modifications can be made within the scope of the present invention according to the purpose and application. The shape, size, number, material, etc. of the bar member 1, the swivel fitting 2, the support shaft 3, the first locking tool 4, the second locking tool 5, the coil spring 6, etc. can be appropriately selected according to the application.

1 Bar member 11 Main shaft part 12 Layshaft part 13 Cylindrical body 2 Turning bracket 21 Short shaft part 22 Suspended part (U-shaped hanging part)
3 Support shaft 4 1st locking tool 41 Base end 46 Hook 5 2nd locking tool 51 Sub part 51A Rib 512 Protruding plate part 55 Flat plate main part 59 Claw part 6 Coil spring 8 Side groove lid 8A Grating 8B Concrete groove Lid T Groove lid raising tool

Claims (4)

A short sub-spindle extends from one end of a long linear spindle in a V-shape, and a tubular body whose axial direction and tubular hole direction are the same is fixed to the tip of the sub-spindle. With bar members
It has a U-shaped hanging portion that is bifurcated from the base end of the short shaft portion, the tip end side of the short shaft portion is inserted into the tubular hole, and a retaining tool is attached to the inserted tip portion. A swivel metal fitting to which the suspension portion is rotatably attached around the short shaft portion, and
A support shaft connecting both ends of the suspension and
A first locking tool for grating having a through hole through which the support shaft is inserted at the base end and an arc-shaped hook at the tip,
A through hole through which the support shaft is inserted is provided in a sub portion on the base end side, and the tip in the advancing direction of the flat plate-shaped main portion which is connected to the sub portion and whose plate width direction is aligned with the axial direction of the support shaft. A side groove lid raising tool comprising: a second locking tool for a concrete groove lid provided with a claw portion that is bent and erected with respect to a flat plate surface of the main portion at a portion. While the L-shaped hook piece is fixed to the cylinder, the support shaft is arranged downward with respect to the cylinder and lifted so that the claw portion is on the top, and the main of the second locking tool. A vertically elongated hole having a long vertical direction is formed in a portion where the portion hits the hook piece, the through hole is made a long hole having a long vertical direction, and the second locking tool is rotated around the support shaft. The side groove lid raising tool according to claim 1, wherein the second locking tool can be detachably hooked on the hook piece by passing the protruding portion of the hook piece through the vertically elongated hole. The second locking tool is provided with a pair of the sub-parts formed of plate-shaped ribs standing upright with respect to the plate surface of the main part, and the ribs are separated from each other to support the support shaft from the base end side of the main part. The through hole is provided in the protruding plate portion protruding to the side, the base end portion is used as the substrate portion, and the first locking tool composed of a plate body extending from which the hook extends is provided, and a coil spring is further provided. The support shaft inserts the two first locking tools sandwiched between the two protruding plate portions by compressing the coil spring, and the two first locking tools are inserted. The side groove lid raising tool according to claim 1 or 2, wherein each of the protruding plate portions is brought into contact with the facing inner surface by receiving an urging force due to elastic restoration of the coil spring. The support shaft is arranged downward with respect to the cylinder body, the second locking tool is hooked on the hook piece, and in the locked state, the second locking tool is more than the protruding plate portion of the second locking tool. (1) The side groove lid raising tool according to claim 3, wherein the substrate portion of the locking tool is formed so as to project downward.

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