JP2709795B2 - Groove lid removal machine with twist prevention structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for preventing a torsion generated when a groove cover is clamped by a diamond-shaped structure of a groove cover attaching / detaching machine for attaching and detaching a groove cover used for a side gutter of a road, and a groove cover. It relates to the clamping force and the attachment / detachment of the groove lid.

[0002]

2. Description of the Related Art A gutter cover raising machine (actually disclosed in Japanese Utility Model Application Laid-Open No. 64-478) which is provided at the tip of a lever body and has a lid-shaped holding member having a rhombic structure.
No. 91). In addition, a gutter cover removal machine provided with a tongue (rhombic structure) at the end of the curved T-shaped lever
2-114985). Also, a concrete groove cover carrier (Japanese Utility Model Laid-Open No. 58-21092) is disclosed in which a handle and a catch pipe are provided on a substrate provided with wheels, and a diamond-shaped structure gripping device is provided at the tip of the catch pipe. is there.

[0003]

The groove lid holding portion of the above-mentioned groove lid lifting machine is often used because it has a feature that the groove lid holding portion has a rhombic structure so that an operator can attach and detach the groove lid with a light force. When the groove cover is lifted and the groove cover is sandwiched, a force of 2 g is applied to the pivots of the two support plates as shown in FIG. 4A, and the thickness d of the support plate is present, and the twist shown in FIG. Force (F
1, F2) occurs, and the torsional force tries to rotate the groove cover in a state where the groove cover is lifted. If used for a long time, metal fatigue occurs on the support plate and the groove cover may fall off. There was sex.

Since the gutter is made of concrete, the mass of the gutter itself is 40 kg to 60 kg, and users are mainly housewives or elderly people. Therefore, it has been desired to have a structure that generates a strong clamping force and a structure that does not fall off in the middle once the groove lid is clamped.

[0005] Further, if the groove lid has a structure for generating a strong clamping force to clamp the groove lid, there arises a problem that the groove lid cannot be smoothly attached and detached, so that these problems are solved.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to provide a groove lid holding portion having a diamond-shaped structure used in a groove lid lifting machine. Generates a torsional force when the groove lid is lifted, but it has a structure that eliminates this torsional force and generates a strong pinching force. An object of the present invention is to provide a detachable machine.

[0007]

Means for Solving the Problems The inventors of the present invention have conceived of various ways to solve the above-mentioned problems and have repeated experiments, and as a result, they have finally completed the present invention. According to the present invention, a groove cover attaching / detaching machine having a twist preventing structure,
The solution to the problem is as follows.

[0008] In a lever-type groove lid attaching / detaching machine in which the groove lid is sandwiched, a hole 16 is formed at an end of the support plate 13.
An operation in which a holding frame 17 is provided at an intermediate portion, a holding plate 14 provided with an engagement hole 12 at the other end, and a holding plate 11 provided with a projection 15 on a lower flat surface at an edge of the holding plate. The holding plate 24 is composed of the rod 1 and has a hole 26 at the end of the support plate 23 and an engagement hole 22 at the other end, and a projection 25 on the lower edge at the edge of the holding plate. A connecting rod 3 comprising an operating rod 2 to which a clamping plate 21 is welded and provided with engaging holes 3a and 3b at both upper ends thereof, and particularly, an engaging hole of the operating rod and an engaging portion of the connecting rod can be hinged. Bolts and nuts 31, 32, 3
3, 34.

Next, the holding plate 14 near the end of the support plate 13
Is provided with an engagement hole 12 at a position below the holding plate 24 and an engagement hole 22 at a position below the holding plate 24 near the end of the support plate 23.

In addition, the hanging portion 4 is engaged with the engaging metal fitting at the end of the lever main body 5 by engaging the hole 16 at the end of the support plate 13 and the hole 26 at the end of the support plate 23 with the engagement fitting at the end of the lever main body 5. A base 6 is provided at the fulcrum, and a foldable fixing bracket 7 is provided below the base 6.
Is provided. In addition, the holding frame 17 is provided at the intermediate portion of the support plate 13, but when the holding frame 17 is provided at the intermediate portion of the support plate 23, the holding frame 17 of the support plate 13 is not necessary. It is needless to say that it is effective only to provide the holding frame in the.

[0011]

The groove lid attaching / detaching machine having a twist preventing structure according to the present invention comprises:
Use as follows: That is, the support plate 23 of the operating rod 2 is fitted into the holding frame 17 in the hollow portion in the middle of the operating rod 1 and assembled. Note that the engaging portions 3a, 3 at both ends of the connecting rod 3 are provided.
The engaging holes 12 and 22 are engaged at appropriate positions of the hole b, and the bolts 31 and 33 penetrate the holes, and are screwed together with the nuts 32 and 34 so that the holding plates 11 and 21 can freely swing.

Further, the worker expands and installs the fixing bracket 7 at the lower part of the base 6 near the side groove, and connects the chain used for the hanging part 4 to the engaging metal at the end of the lever body 5. Engage with the proper position of the tool and start work.

Further, the handle 51 is moved to hold the holding plates 11 and 12 in the concave portions on the side surfaces of the concrete groove lid 8.
1 is inserted from above, and the handle 51 is pressed downward,
When the two protrusions 15 and 25 inside the holding plates 11 and 21 grip the concrete, they are lifted and placed on the ground, and then the adjacent groove lid is removed and placed on the ground.

At this time, the operation is performed based on the principle of leverage with the engagement holes 12 and 22 as fulcrums. Further, since the support plate 23 of the operating rod 2 is fitted into the hollow holding frame 17 at the center of the operating rod 1, there is no displacement due to the plate thickness d in FIG.
3 has the hole 16 and the holding plate 11 at the center, and the center of the support plate 23 has the same arrangement of the hole 26 and the holding plate 21.
In which the torsional forces F1 and F2 do not occur.

In addition, there are engagement holes 12 and 22 serving as fulcrums of levers at the lower portions of the holding plates 14 and 24, so that a large clamping force is generated. Further, the reason why the engaging holes 12, 22 are located below the center of the support plates 13, 23 by the dimension c in FIG. 3B is because the holding plates 11, 21 are greatly opened and the groove cover is easily attached and detached. It is.

Next, one groove cover is left, and the next two sheets are removed and cleaned by the same means, and the operation proceeds one after another. When the cleaning is completed, the groove cover placed on the ground is clamped by the holding plates 11 and 21, the handle 51 of the lever body 5 is lowered, the groove cover is lifted, and the groove is moved to the upper side to be installed. End the repetitive work.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be illustratively described in detail below with reference to the drawings. However, the configuration method, configuration device, configuration contents, dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not limited to the scope of the present invention unless otherwise specified. It is not intended to be limited to only the above, but merely an explanation example. The groove cover attaching / detaching machine having the twist preventing structure can be variously modified in the scope of the claims.

The support plate 13 is composed of a series of plate-like members including a hole 16 at an end, a hollow holding frame 17 at an intermediate portion, and a holding plate 14 having an engagement hole 12 at the other end. A holding plate 11 provided with two projections 15 on a lower plane at an edge of the holding plate.
Of the operating rod 1 formed by welding. A hole 26 at the end of the support plate 23 and a holding plate 24 provided with an engagement hole 22 at the other end are formed of a series of plate-like members. The operating rod 2 is formed by welding a holding plate 21 provided with individual projections 25. In addition, the connecting rod 3 having the engaging holes 3a and 3b at both ends, particularly the engaging hole of the operating rod, and the bolts and nuts 31, 32 and 33 for hingeably fixing the engaging part of the connecting rod. , 34.

The groove cover attaching / detaching machine having a twist preventing structure according to the present invention is used as follows. That is, the support plate 23 of the operating rod 2 is fitted into the holding frame 17 in the hollow portion in the middle of the operating rod 1 and assembled. In addition, there are type 1 and type 2 used for prefectural roads, type A and type B used for city roads, and type A and type B mainly used around houses. So that
The engaging holes 12 and 22 are penetrated by bolts 31 and 33 at appropriate positions of the holes of the engaging portions 3a and 3b at both ends of the connecting rod 3, and screwed by nuts 32 and 34, so that the holding plates 11 and 21 can be freely. And fix it so that it slides to it.

In addition, the operator expands and installs the fixing plate 7 below the base 6 near the side groove, and connects the chain used for the hanging part 4 to the engaging metal fitting at the end of the lever body 5 as appropriate. Engage position and begin work.

Further, the handle 51 is moved so that the holding plates 11 and 12 are inserted into the concave portions on the side surfaces of the concrete groove lid 8.
1 is inserted from above, and the handle 51 is pressed downward,
Since the two projections 15 and 25 inside the holding plates 11 and 21 grip the concrete, they are lifted and placed on the ground, and then the adjacent groove lid is also removed and placed on the ground.

Next, one groove cover is left, and the next two sheets are removed and cleaned by the same means, and the operation proceeds one after another. When the cleaning is completed, the groove cover placed on the ground is clamped by the holding plates 11 and 21, the handle 51 of the lever body 5 is lowered, the groove cover is lifted, and the groove is moved to the upper side to be installed. End the repetitive work.

Also, engaging portions 3a, 3b are provided at both ends of the connecting rod 3.
Is provided in order to cope with the size of the groove cover, and the engaging hole 12 and the engaging portion 3b, which are the fulcrum of the operating rod 1,
It is hinged with a bolt 33 and a nut 34, and is further hinged with a bolt 31 and a nut 32 at an engagement hole 22 and an engagement portion 3a, which are fulcrums of the operating rod 2, for use.

As these materials, metals such as iron, soft iron, cast iron, steel, nickel and chromium are used. In particular, two conical projections 1 are provided on the inner flat surfaces of the holding plates 11 and 21.
5, 1525 and 25 are provided, and it is preferable to use steel as the material.

Next, the shapes of the operating rods 1 and 2 are shown in FIG.
As shown in the figure, a quadrilateral clamping plate 1 having conical projections 15, 15, 25, 25 provided at the tip of an inverted U-shaped plate member.
1, 12 are welded in a T-shape. It is to be noted that a rectangular one provided with groove-shaped engaging portions 3a, 3b at both ends is hinged with bolts / nuts 31, 32, 33, 34. In addition, the shapes of the projections 15 and 25 are usually cones, but their outer pyramids, pentagonal pyramids, hexagonal pyramids, and polygonal pyramids are also suitable.

The details of the present invention will be described with reference to FIG. The dimensions of the supporting plates 13 and 23 are about 380 mm from the center of the holes 16 and 26 to the center of the engaging holes 12 and 22, and the dimension b of the holding plates 14 and 24 is about 70 mm. The central portions of the holes 12 and 22 and the support plates 13 and 2
3 is about 17 mm, and the mounting angle between the center of the upper support plates 13 and 23 and the holding plates 11 and 21 is preferably about 60 °.

The embodiment of the present invention has been described above.
The present invention is not limited to such embodiments at all, and it goes without saying that the present invention can be implemented in various modes without departing from the gist of the present invention.

[0028]

When the groove lid attaching / detaching machine according to the present invention is used,
Since the holding frame is provided in the middle part of one of the support plates, the support plates do not intersect each other, so when the groove cover is lifted, there is no torsional force, so there is a force to rotate the groove cover. There was no danger of falling off, and it was possible to work safely.

Further, by using the engaging hole near the holding plate as a fulcrum, the fulcrum of the lever becomes two places, a strong holding force is generated, and the groove cover is held. The work became safe and the work became safe.

Further, by lowering the center of the engagement hole by the dimension c below the center of the support plate in FIG. 3B, the opening of the two holding plates is increased, and the groove cover can be smoothly attached and detached. It became so.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of the present invention.

FIG. 2 is an overall perspective view of the present invention.

FIG. 3 is an external view of the present invention.

FIG. 4 is an explanatory diagram of a main part of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 operating rod 2 operating rod 3 connecting rod 4 hanging part 5 lever body 6 base 7 fixing bracket 8 groove lid 11 holding plate 12 engaging hole 13 support plate 14 holding plate 15 protrusion 16 hole 17 holding frame 21 holding plate 22 engaging Hole 23 Support plate 24 Holding plate 25 Projection 26 Hole 3a Engagement part 3b Engagement part

Claims (2)

(57) [Claims] 1. A lever-type groove having a diamond-shaped structure for holding a groove cover at an action point, a support base provided at a fulcrum, and a handle portion provided at a power point when a groove cover used for a side gutter of a road is attached and detached. In the lid attaching / detaching machine, a hole (16) is provided at an end of the support plate (13), a holding frame (17) is provided at an intermediate portion, and an engagement hole (12) is provided at the other end.
And an operating rod (1) obtained by welding a holding plate (14) provided with a holding plate (11) and a holding plate (11) provided with a projection (15) on a lower surface at the edge of the holding plate. In addition, the support plate (2
The hole (26) is provided at one end of the third hole, and the engagement hole (2) is provided at the other end.
An operating rod (2) is formed by welding a holding plate (24) provided with 2) and a holding plate (21) provided with a projection (25) on a lower surface at an edge of the holding plate. In addition, a connecting rod (3) provided with engaging holes (3a, 3b) at both ends, especially an engaging hole of an operating rod, and a bolt and nut (3) for hingeably fixing the engaging portion of the connecting rod. 31, 32, 33, 34). A groove cover attaching / detaching machine having a twist preventing structure. 2. A holding plate (1) near an end of a supporting plate (13).
In the lower position of 4), an engagement hole (12) and a support plate (23)
At the position below the holding plate (24) near the end of the
2. The groove cover attaching / detaching machine according to claim 1, wherein 2) is provided.