JP3021988U - Construction of a concrete gutter lid holding device - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention relates to an improvement of a holding device for attaching and detaching and carrying a concrete gutter lid, which is easy to work and can be held without damaging the lid. A support frame vertically mounted on a concrete gutter lid, an arm having one end pivotally attached to each end of the support frame, and a shackle pivotally attaching the other ends of the arms to each other. It consists of a grip plate joined to the tip of the arm, and a long hole is bored so that the shaft can slide on the shackle pivoting parts of both arms pivotally mounted by the shackle, and the grip plate lifts the shackle. Construction of a concrete gutter lid holding device configured to be substantially perpendicular to the support frame when opened.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure of a new holding device used for attaching and detaching a lid of a concrete gutter and transporting the lid.

[0002]

[Prior art]

 As a conventional mechanism for gripping the gutter lid, a wheel is provided below the tip of the vehicle frame, and hooks are hung at both ends of the gripping rod at the opposite end, while both ends of a support frame of approximately the same length as the horizontal suspension rod are provided. The middle part of the lifting rod that is orthogonal to the support frame is pivotally attached to this part, and a locking claw that locks to the bottom surface of the concrete lid is provided at the tip of this lifting rod, and the chain is fixed to the upper end. To form a concrete lifting device, and the chain of the concrete lifting device was hooked on both end hooks of the carrier's horizontal suspension frame to suspend the concrete lifting device below the horizontal suspension rod. Concrete lifting mobiles characterized by these facts (Jikkou 03-39340, Jikken 03-57570, etc.) have been devised and known. In such a device, by inserting the lifting rod into the hole of the lid of the side groove and then contracting the supporting rod, the lifting rod is applied to the side surface of the concrete lid and the locking claw provided at the tip of the lifting rod. The lid of the gutter is attached and detached by lifting the lid by moving the lid and moving it down, and then extending and retracting the support rod to unlock the lid by the lifting rod.

[0003]

[Problems to be solved by the device]

 With such a conventional device, although the lid can be lifted firmly, there are the following inconveniences. When holding the lifting rod, it is necessary to remove the bolts and nuts one by one to expand and contract the support rod, and to contract the support rod, which causes inconvenience that the work efficiency is extremely poor and the locking claw provided at the tip of the lifting rod. There was an inconvenience that the contact part was easily damaged because it directly contacted the concrete. Recently, the standard for gutter lids is changing from 50 cm in vertical length to 100 cm in length. As a result, the weight has also increased from about 60 kg to about 120 kg, and it is not possible to attach / detach and carry it with such a conventional device. Therefore, a method is used in which the wire rope is turned from under the lid to the top and lifted by a hoist. However, even in this case, there were inconveniences such as the lid being damaged by the wire rope, and conversely the wire being damaged and the wire being ejected, which was stabbed in the operator's hand. There was also the inconvenience that the wire rope slipped and the lid bent sideways. Therefore, the present invention has been made in view of the inconveniences of the prior art, and an object thereof is to provide a structure of a holding device that is easy to work, does not damage the lid of the gutter, and is less likely to be injured by an operator. And

[0004]

[Means for Solving the Problems]

 That is, the present invention provides a support frame vertically mounted on a concrete gutter lid, an arm having one end pivotally attached to each end of the support frame, and a shackle pivotally attaching the other ends of the arms to each other. , A grip plate joined to the tip of the arm, and an elongated hole is bored so that the shaft can slide on the shackle pivotally attached portions of both arms pivotally attached by the shackle. Construction of a concrete gutter lid gripping device configured to be approximately perpendicular to the support frame when lifted. A slip stopper may be attached to the inner wall surface of the grip plate, and a square-shaped stopper may be pivotally attached to one of the arms, and the stopper may be attached to a support frame located below the pivotally attached portion of the stopper. It is preferable to provide a metal fitting so that the arm is locked at a predetermined angle.

[0005]

[Action]

 In the gripping device according to the present invention, when the shackle is lifted while being positioned toward the lid of the gutter, the grip plate joined to the tip of the arm contacts the surface of the lid. Then, push the grip plate out and insert the grip plate into the hole of the lid at the position where the surface of the grip plate is perpendicular to the surface of the lid. As a result, the support frame comes into contact with the lid surface, and the holding device is located at the lowermost position. When a wire rope is tied to the shackle and lifted with a hoist in this state, the shackle pivot shaft slides to the end of the long hole drilled in the arm while lifting the arm, while it is joined to the tip of the arm. The grip plate comes into surface contact with the side surface of the gutter lid. Furthermore, when trying to lift the shackle with a hoist, the force to narrow the angle of the arm of the arm acts on the grip plate, and the lid of the gutter is held by the holding device with a large amount of force. As a result, the lid is lifted up together with the holding device and is ready for transportation. Move the hoist etc. to convey the lid to a predetermined place.

Next, until the lid is lowered to a predetermined position by lowering the holding device while positioning it via the hoist, the state where the lid is firmly held by the device is maintained. Furthermore, as the shackle is lowered, the angle between the arms widens, and the grip plate separates from the side of the lid. If the holding device is lifted while maintaining the angle of the arm, the lid and the holding device will be completely separated.

In the case where the stopper is pivotally attached to the arm and the stopper is attached to the support frame, the stopper is locked to the stopper when the holding device of the apparatus is conveyed without weight. In other words, the state in which the stopper is locked holds the grip so that the arm's included angle is maintained at a predetermined angle, so that the grip plate is inserted into the hole between the lids and the grip plate is removed from the hole. Occasionally, the operator does not have to push the grip plate out or support the arm's angle of attack.

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. In FIG. 1, reference numeral 1 denotes a support frame formed by combining horizontal plate members so that the plate member 1a is held by two plate members 1b and 1b so as to be substantially equal to the vertical length of the gutter lid 2. In this embodiment, pillow plates 3 and 3 made of two plate members are joined below the support frame 1 perpendicularly to the longitudinal direction of the support frame 1. Arms 5 and 5 made of a pair of plate members are rotatably pivoted to the ends of the plate member 1a constituting the support frame 1 via bolts 4, and are also held between the end parts of the plate members 1b and 1b. Similarly, an arm 6 made of a plate material is also rotatably attached to the arm 6. Each of the arms 5, 5 and 6 has a long hole 7, 8 extending in the longitudinal direction at a position at the same distance from the pivot portion, and the shackle 9 is passed through the long holes 7, 8 to form an arm. 5 and 6 are rotatably supported so that they can be opened and closed within a predetermined angle range.

At the tip of the arm pivotally attached to the support frame 1 of the arms 5, 5 and 6, a grip plate made of a flat plate is formed so that the included angle with the arms 5, 5 and 6 is obtuse. 10 and 11 are joined to each other, and slip stoppers 12 and 12 made of rubber or a material having a large sliding friction resistance are attached to the inner surfaces of the grip plates 10 and 11. The slip stopper may be formed by a rough surface having irregularities on the surface.

Reference numeral 14 denotes a V-shaped stopper that is rotatably pivotally attached to the middle of the arm 5 with a bolt 15 or the like. The stopper 14 is attached to the support frame 1 located below the pivotal attachment portion of the stopper 14. A stopper 16 for locking the is provided. In this embodiment, when the shackle 9 is lifted while sliding the elongated holes 7 and 8 of the arms 5 and 6, the distance between the grip plates 10 and 11 is substantially the same as the length d of the lid of the gutter. In addition, the holes of the grip plates 10, 11 are formed so that the surfaces of the grip plates 10, 11 are substantially parallel to the side surfaces of the lid 2 of the gutter. When the length to the end is L and the length to the nearest end of the long holes 7 and 8 of the arms 5 and 6 is L ', the following formula is satisfied.

[0011]

[Formula 1] Angle: α≈arccos (d / 2L) + 90 ° However, the length m of the arms 5 and 6> L

[0012]

[Formula 2] L '> d / 2

Further, the outer diameter between the plate members 10 and 11 of the holding device when the stopper 14 is locked to the stopper 16 has a double-sided gripping hole 18 (diameter p) provided on the side surface of the lid 2. It is designed to be less than (d + 2p) when present and less than (d + p) when present on only one side. That is, the grip plates 10 and 11 are smoothly inserted into the holes 18. Reference numeral 20 is a wire rope for connecting to the shackle 9, and the wire rope 20 is connected to a hoist (not shown) to raise and lower the holding device.

With the configuration described above, in the holding device according to the present embodiment, when the device is transported in the empty state, the stopper 14 is transported while being locked to the stopper 16. At this time, the support frame 1 and the arms 5 and 6 have a fixed angle of inclination, so that the shackle 9 is supported by the middle portions (FIG. 1) of the elongated holes 7 and 8 of the arms 5 and 6. The grip plates 10 and 11 are open with respect to the lid 2. Then, while positioning the grip plates 10 and 11 so as to insert them into the holes 18 of the lids 2 and 2, the pillow plates 3 and 3 below the support frame 1 come into contact with the surface of the lid 2 and the arm descends. As a result, the stopper 14 can be easily removed from the stopper 16. Next, the stopper 14 is released, and the shackle 9 is lifted through the wire rope 20 and the hoist, and the shackle 9 slides obliquely upward in the long holes 7, 8 provided in the arms 5, 6, and the long hole 7, 8 will be supported by the end portions of the grip plates 10, 11, and the clasps 12, 11 of the grip plates 10, 11 will be in surface contact with the side surface of the lid 2 of the gutter, and by further lifting the shackle 9, the grip plates 10, 11 Creates great holding power. Since such a holding force is sufficient to lift the lid 2, the lid 2 is lifted together with the shackle 9 as it is.

The hoist is moved in the lifted state, the lid 2 is transported to a predetermined place, and the lid 2 is positioned and lowered. The holding force by the grip plates 10 and 11 is maintained during the lowering, and is maintained until it is lowered onto the ground or another gutter. When the lid 2 is finished to be lowered by the holding device, the arm further descends due to its own weight, so the shackle 9 slides diagonally downward in the long holes 7 and 8 drilled in the arms 5 and 6, which is different from the above. On the contrary, it moves to the side of the grip plates 10, 11. As a result, the mechanism upper grip plates 10, 11 of the arms 5, 6 are opened, and the gripping of the lid by the grip plates 10, 11 is completed. As a result, the stopper 14 is easily locked to the stopper 16, and the worker holds the arms 5 and 6 at a predetermined angle by locking the stopper 14, and the arms 5 and 6 are grasped from the hole of the lid 2. When the shackle 9 is lifted by the hoist as it is, the plates 10 and 11 can be easily pulled out, and only the holding device is lifted. As described above, the work of attaching and detaching the lid 2 of the next gutter can be started.

In this embodiment, the stopper 14 is used to maintain the included angle of the arms 5 and 6. However, since the operation of the arm is not a heavy labor for the operator except for the attachment / detachment and the transportation work. The operator may operate the arm or push the grip plates 10 and 11 apart each time. On the contrary, the locking tool including the stopper 14 and the stopper 16 may be configured to be mounted not only on one of the arms but also on both the arms 5 and 6. In this embodiment, the pillow plates 3 and 3 are attached below the support frame 1, but the pillow plates 3 and 3 are for preventing the support frame 1 from falling over the lid 2. Needless to say, the same effect can be obtained with respect to the holding even if the pillow plates 3 and 3 are not attached. Further, in the present embodiment, the support frame 1 is configured by joining the plate members 1a so as to be sandwiched by the plate members 1b, 1b, but the invention is not limited to this, and the support frame 1 is configured by a wide plate member. Supports 22 may be connected to both ends of the surface, and arms 5 and 6 may be pivotally attached to these supports (Fig. 8). Alternatively, a square frame may be configured with plate material or pipe material. However, the support may be provided at a position corresponding to the facing surface of the frame. In such a case, it is not necessary to join the pillow plate for preventing the fall as provided in the present embodiment. Further, in the present embodiment, the elongated holes 7 and 8 are provided in the portions where the arms 5 and 6 are supported by the shackle 9, respectively. However, the arms which are the supporting portions of the support frame 1 and the respective arms 5 and 6 are provided. Even if the shackle 9 is provided with elongated holes 7 ′ and 8 ′ in the plate members 5 and 6 so as to form a circular hole (FIG. 9), similar holding force can be obtained. .

[0017]

【effect】

 As described above, the holding device according to the present invention can easily and efficiently carry out the work of attaching and detaching the gutter lid, which was a heavy work for the worker, by a light work using a hoist or the like as in the past. . Moreover, the number of workers attending the work is smaller than that of the conventional device, and its practical value is extremely high.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the device according to the present invention.

FIG. 2 is a partial plan view showing a structure of a device according to the present invention.

FIG. 3 is a front view of the device of the present invention with the arm disassembled.

FIG. 4 is a front view showing a holding plate of the device according to the present invention.

FIG. 5 is a perspective view of a gutter lid.

FIG. 6 is a perspective view showing a structure of a support frame.

FIG. 7 is a plan view showing a state where the arms are connected to each other.

FIG. 8 is a perspective view showing another embodiment of the support frame.

FIG. 9 is a front view showing another embodiment of the arm pivotally attached to the support frame in a freely rotatable manner.

[Explanation of symbols]

 1 Support frame 2 Gutter lid 3 Pillow plate 4 Bolt 5,6 Arm 7,8 Oblong hole 9 Shackle 10, 11 Grip plate 12 Non-slip 14 Stopper 15 Bolt 16 Fastener 18 Hand grip hole 20 Wire rope

Claims (3)

[Scope of utility model registration request] 1. A support frame vertically mounted on a concrete gutter lid, an arm having one end pivotally attached to each end of the support frame, and a shackle pivotally attaching the other end of the arm to each other. A grip plate joined to the tip of the arm, and an elongated hole is bored so that the shaft can slide on the shackle pivotally attached portions of both arms pivotally attached by the shackle. A structure for holding a concrete gutter lid, which is configured to be substantially vertical to the support frame when the is lifted. 2. The structure of the concrete gutter lid holding device according to claim 1, wherein a slip stopper is attached to an inner wall surface of the grip plate. 3. A square-shaped stopper is pivotally attached to one of the arms, and a stopper metal fitting is provided on a support frame located below the pivotal attachment portion of the stopper. Item 2. The structure of the device for holding a concrete gutter lid according to Item 1.