JP2001261281A - Internally installing hook - Google Patents

Abstract

PROBLEM TO BE SOLVED: To carry a heavy weight in a horizontal state and to structure such an internally installing hook so that metal hangers, etc., are not projected from an upper surface of the heavy weight. SOLUTION: This internally installing hook constitutes a characteristic feature of forming a recessed part on an upper surface of a heavy weight, storing a metal hanger to hook a crane, etc., on this recessed part free to rise and sink, axially installing an axis of rotation to support the metal hanger at a suitable position on the upper surface of the heavy weight on the recessed part, axially installing an inside cover in a space to hook the crane, etc., of the metal hanger free to open and close and almost eliminating a projection or a depression on the upper surface of the heavy weight in a state where the metal hanger is stored in the recessed part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting hook used for lifting heavy objects such as groove covers, manhole covers, and gratings, and holds a heavy object substantially horizontally when lifting the heavy object. It is an object of the present invention to provide a charging hook that can completely cover and flatten the upper surface of a heavy object when not in use.

[0002]

2. Description of the Related Art Conventionally, when lifting heavy objects such as groove covers, manhole covers, and gratings, the operations are performed as shown in FIGS. That is,
a) Insert a heavy object 21 placed horizontally on the ground or the like, for example, by inserting the tip of an iron bar 23 placed on a fulcrum 22 below the heavy object 21 and using the principle of leverage to attach an end of the heavy object 21 to the end of the heavy object 21. Open a gap with b) A hook such as a crane is hooked on a hanging metal attached to the end of the heavy object 21 or a hole formed in the heavy object 21 (see FIG. 6). c) The end of the heavy object 21 is lifted in an oblique state and lifted so as to rise gradually (see FIG. 7).

Therefore, the heavy object 21 is in a vertical state when finally lifted, and is conveyed to a predetermined position as it is. Then, when installing at a predetermined position, the lower end was once abutted against the predetermined position, and thereafter, the heavy object 21 was gradually lowered and dropped into the predetermined position.

[0004]

However, in the conventional example shown above, since the heavy object 21 is heavy, the fulcrum shifts when the end is lifted by the iron bar 23, and the heavy object 21 moves greatly. This is very dangerous for the operator because the hook of a crane or the like is easily released (sliding) or lifted in an oblique state.

[0005] In addition, the same operation as described above must be performed when the heavy object 21 is loaded on a dump truck or the like, and a person or an object exists in the work of the dump truck or in the sliding direction of the heavy object 21. In case it was very dangerous.

The present invention has been made in view of the above-described problems including various operability and danger in the conventional example, and it is needless to say that a heavy object can be transported in a horizontal state. It is an object of the present invention to solve the above-mentioned problem by adopting a structure in which a hanging fitting or the like does not protrude from the upper surface of a heavy object.

[0007]

That is, in the charging hook of the present invention, a recess is formed on the upper surface of a heavy object, and a hanging metal fitting for hooking a crane or the like is housed in the recess so as to be freely protruded and retracted. A rotating shaft that supports the above-mentioned hanging metal fitting is mounted on the upper surface of the heavy object, and an inner lid is freely opened and closed in a space where the hanging metal fitting such as a crane is hooked, and the hanging metal fitting is housed in the recess. In this state, the upper surface of the heavy object is substantially free from protrusions and dents.

[0008] The feeding hook of the present invention is characterized in that the upper surface of the heavy object has almost no protrusions or dents when the inner lid inside the hanging member is housed in the recess together with the hanging member. It is assumed that.

In the charging hook according to the present invention, the rotating shaft for supporting the hanging member is attached to the center of gravity of the heavy object so that the heavy object is kept horizontal when the heavy object is lifted by the hanging member. It is characterized by having made it.

[0010] Since the present invention is configured as described above, it is possible to lift and transport a heavy object while keeping it in a horizontal state, and the workability is very good. In addition, it is very safe because the heavy object does not stand upright or fall down, and of course, it is structured so that the hanging bracket etc. do not protrude from the upper surface of the heavy object, so the groove cover and manhole cover When used as a grating or the like, no vibration or the like occurs due to the passage of the tire.

In addition, since almost no gap is formed on the upper surface of the heavy object, dirt and mud are less likely to collect around the hanging metal fittings on the upper surface of the heavy object, and a groove cover, manhole cover, grating, etc. must be opened. Even in an emergency, the hanging bracket can be quickly and reliably raised and transported by a crane or the like.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a feeding hook according to the present invention. 1 to 4 show an embodiment according to the present invention. That is, FIG. 1 is a plan view showing one embodiment of the charging hook of the present invention, FIG. 2 is a front view of a state in which a hanging metal is raised, FIG. 3 is a side view thereof, and FIG. .

1 to 4, reference numeral 1 denotes a heavy object including a groove cover, a manhole cover, grating, and the like. A concave portion 2 is formed on the upper surface of the heavy object 1. This recess 2
Is desirably formed in a contour such that the following hanging metal fittings are substantially inscribed. In the figure, it is formed in an arcade shape having a curved surface at the top.

In this recess 2, a hanging metal fitting 3 for hooking a crane or the like is housed so as to be able to come and go. And heavy goods 1
A pair of bearing holes 4 are formed at one end in the recess 2 so as to face the side surface thereof, and a rotary shaft 5 that supports the hanging metal fitting 3 is mounted on the shaft. Therefore, this hanging bracket 3
It can rotate around the rotating shaft 5, and can stand up and fall down as required.

A stopper 6 is formed at the other end of the recess 2 of the heavy object 1 so as to prevent the hanging metal 3 from passing through. The metal fitting 3 is stored at a predetermined position. Therefore, no protrusion is generated on the upper surface of the heavy object 1. That is, when used as a groove cover, a manhole cover, grating, or the like, vibration or the like does not occur due to passage of the tire. In the drawing, reference numeral 7 denotes an engaging portion at the tip of the hanging metal fitting 3 which engages with the stopper 6, and 8 denotes a guide groove provided inside the engaging portion 7 for engaging a hook 9 of a crane or the like so as not to wobble. is there.

Next, in the space where the hook 9 such as a crane of the hanging metal fitting 3 is hooked, an inner lid 10 is pivotally mounted via a shaft 11 so as to be freely opened and closed. Therefore, the hook 9 of a crane or the like raises the hanging fitting 3, and further, the inner lid 10
Can be inserted into the hanging metal fittings 3 after opening the above space by tilting.

Of course, the hanging fitting 3 is the concave 2
, The upper surface of the weight 1 has almost no protrusions or dents. Therefore, even when used as a groove cover, manhole cover, grating, or the like, it does not hinder the passage of vehicle tires or generate noise.

A rotating shaft 5 for supporting the hanging fitting 3 is provided.
Is mounted at a position of the center of gravity near the center of the heavy object 1, and the heavy object 1
When the is lifted, the heavy object 1 is kept horizontal. Therefore, the heavy object 1 does not perform a troublesome operation such as standing up or falling down, the workability is very good, and the safety is remarkably improved.

When using the charging hook of the present invention, first, the hanging metal fitting 3 on the upper surface of the heavy object 1 placed on the ground or the like is used.
Is rotated about the rotation axis 5 and is caused vertically as shown in FIGS. Next, the inner lid 10 inside the hanging fitting 3
When the is pressed from the side, the inner lid 10 opens, and the inner lid 10 turns around the shaft 11 and stops at a substantially horizontal position.

Then, as shown in FIG. 4, when a hook 9 such as a crane is hooked on the guide groove 8 and lifted,
As shown in FIG. 5, the center of gravity can be lifted by the hanging bracket 3, so that it can be moved up and down while maintaining the horizontal state.

Of course, when the transfer operation or the like is completed, the hook 9 of the crane or the like is detached from the hanging metal fitting 3 and the hanging metal fitting 3 is tilted around the rotation shaft 5 so that the hanging metal fitting 3 is placed in the recess 2 of the heavy object 1. And does not protrude from the upper surface of the weight 1. Further, the inner lid 10 is also housed inside the hanging fitting 3. Therefore, when used as a groove cover, a manhole cover, grating, or the like, vibration or the like does not occur due to passage of the tire. Furthermore, there is almost no gap on the upper surface of the heavy object 1 and dirt and mud are unlikely to collect around the hanging fitting 3 on the upper surface of the heavy object 1, and in case of an emergency where a ditch cover, a manhole cover, grating or the like must be opened. Also, the hanging fitting 3 can be raised quickly and reliably and transported by a crane or the like.

[0021]

Since the present invention is constructed as described above, a heavy object can be lifted or transported in a horizontal state, and the workability is very good. In addition, it is very safe because the heavy object does not stand upright or fall down, and of course, it is structured so that the hanging bracket etc. do not protrude from the upper surface of the heavy object, so the groove cover and manhole cover When used as a grating or the like, no vibration or the like occurs due to the passage of the tire.

Further, since almost no gap is formed on the upper surface of the heavy object, dirt and mud do not easily collect around the hanging metal fittings on the upper surface of the heavy object, and the groove cover, manhole cover, grating, etc. must be opened. Even in an emergency, the hanging bracket can be quickly and reliably raised and transported by a crane or the like.

[Brief description of the drawings]

FIG. 1 is a plan view showing one embodiment of a charging hook of the present invention.

FIG. 2 is a front view of a state in which a hanging fitting is raised.

FIG. 3 is a side view thereof.

FIG. 4 is a side view of a use state.

FIG. 5 is a schematic view of a use state.

FIG. 6 is a schematic diagram showing a conventional example.

FIG. 7 is a schematic view showing a state of a lifting operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heavy object 2 Depression 3 Hanging bracket 4 Bearing hole 5 Rotating shaft 6 Stopper 7 Engaging part 8 Guide groove 9 Hook of crane etc. 10 Inner lid 11 Shaft

Claims (3)

[Claims] 1. A recess is formed on the upper surface of a heavy object, and a suspending device for hooking a crane or the like is housed in the recess so as to be freely retractable, and the suspending device is supported at an appropriate position on the upper surface of the heavy object in the recess. The inner shaft is pivotally mounted in the space where the crane etc. of the hanging bracket can be hooked, and the inner lid is freely openable and closable. Feeding hook characterized by no objects or dents. 2. The charging hook according to claim 1, wherein when the inner lid inside the hanging fitting is housed in the recess together with the hanging fitting, the upper surface of the heavy load has almost no protrusions or dents. . 3. A rotating shaft for supporting a hanging member is mounted on a center of gravity of a heavy object so that the heavy object is kept horizontal when the heavy object is lifted by the hanging metal member. Or the charging hook according to 2.