JP2009120359A - Suspension hook - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suspension hook capable of preventing a receiving claw from being clamped between an object to be suspended and a ground contact surface in loading/unloading of the plate-like object to be suspended. <P>SOLUTION: A connection pin 7 supported on an end part of a bent plate part is inserted to a pin hole 6 comprising a long hole formed on an end part of an inclination plate part 3, a positioning plate 10 is made pivotable within a range where the connection pin 7 is abutted on both ends of the pin hole 6, and a positioning projection part 16 is provided on a lower end part of a side surface 4 at a body side of the positioning plate 10. The positioning projection 16 is abutted on one surface of an outer periphery of the object A to be suspended, and an insertion amount of the receiving claw 5 relative to a lower surface side of the object A to be suspended is restricted. The receiving claw 5 is engaged with a lower surface of the object A to be suspended in the restriction state to form a large clearance δ0 between the side surface 4 at the body side of a suspension plate 2 and one surface of the outer periphery of the object A. The suspension plate 2 is largely inclined in an inner direction at ground-contact of the object A, and the receiving claw 5 is smoothly slip out from the clearance between the object A and the ground-contact surface B. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a hanging hook used for loading and unloading heavy plate-like suspension objects such as thick iron plates and lining plates.

  When loading and unloading iron plates with a crane, a hanging hook is usually used. As this type of hanging hook, the one shown in FIG. 5 (I) is conventionally known. This hanging hook is provided with a receiving claw 22 at the lower end on the side of the belly side of the hanging plate 20 having an inclined plate portion 21 projecting obliquely upward, and the lower surface 22a of the receiving claw 22 is directed from the rear end to the front end. A U-shaped shackle 24 is swingably supported at the end of the inclined plate portion 21 via a connecting pin 23.

  When the iron plate is transferred using the above-described suspension hook, as shown in FIG. 5 (I), the outer peripheral portion of the lower surface of the iron plate A is supported by the claws 22 and is wound up by the crane suspension rope connected to the shackle 24. The iron plate A is suspended, transferred to the target position in the suspended state, and then lowered.

Here, if the engagement length of the receiving claw 22 with respect to the outer peripheral portion of the lower surface of the iron plate A is short, there is a risk that the receiving claw 22 will come off and the iron plate A will fall when the iron plate A is transferred. It is necessary to ensure a sufficient engagement length of the claw 22. Therefore, usually, the side surface 20a of the ventral hanging plate 20 on the outer periphery a surface of an iron plate A contact, or as the side surface 20a and the small interval [delta] ₁ between the outer periphery a surface of an iron plate A are formed, undergo The claw 22 is engaged with the outer peripheral portion of the lower surface of the iron plate A.

By the way, in the conventional suspension hook, the suspension support of the iron plate A is such that the outer peripheral surface of the iron plate A abuts on the side surface 20a on the abdomen side of the suspension plate 20, or a minute distance between the side surface 20a. Since the support is such that δ ₁ is formed, when the iron plate A is unloaded, the receiving claws 22 are often sandwiched between the ground plane B and the iron plate A.

That is, as shown in FIG. 5 (I), the iron plate A is supported in a state of supporting the iron plate A in which a minute gap δ ₁ exists between the outer peripheral surface of the iron plate A and the side surface 20a on the belly side of the suspension plate 20. When loaded and unloaded, after the lower surface of the catching claw 22 is grounded with respect to the ground plane B, the hanging hook falls to the iron plate side (inner side), and as shown in FIG. Abuts on the upper edge a of the entire outer periphery. At this time, the hanging hook fall within the range of the gap [delta] _1, since the gap [delta] ₁ is extremely small, hanging inclination angle of the hook is small, the side surface 20a of the ventral hanging plate 20 is above the periphery a surface of an iron plate A Immediately contact with the edge a, the inward collapse is prevented, and the receiving claw 22 is sandwiched between the ground plane B and the iron plate A.

  At this time, since the receiving claw 22 supports the weight of the iron plate A, it is necessary to apply a large operating force to the hanging hook when the receiving claw 22 is pulled out, and it takes much time to pull out the receiving claw 22. become.

  An object of the present invention is to provide a suspension hook that can prevent a catching claw from being sandwiched between a suspension target and a ground surface when loading and unloading a plate-shaped suspension target. .

  In order to solve the above-described problems, in the present invention, a receiver that supports a lower peripheral portion of a lower surface of a plate-like suspension target at a lower end portion on a belly side of a suspension plate that has an inclined plate portion that projects obliquely upward. A claw is provided, and the lower surface of the receiving claw is formed into an arcuate surface inclined with an upward gradient from the rear end portion toward the front end, and the shackle is swingably supported by a connecting pin supported at the end portion of the inclined plate portion. In the hook, a positioning groove is formed on the suspension plate so that the suspension plate and the inclined plate portion are bifurcated from the lower end portion to the upper end of the inclined plate portion, and the bent plate portion is provided in the upper portion of the dividing groove. The bending portion of the positioning plate is supported swingably around the support pin supported at both ends by the bending portion of the suspension plate, and is used for inserting a connecting pin formed at the end portion of the inclined plate portion. A circle with the pin hole at the center of the support pin A pin mounting hole in which the connection pin is inserted and supported at the end of the bent plate portion, and the connection pin is a long hole at the lower end of the side surface of the positioning plate A configuration is adopted in which a positioning protrusion is formed to project outward from the ventral side surface of the suspension plate in a state of being in contact with the upper end of the hole and position the entire outer peripheral surface to be suspended.

  In the suspension hook having the above structure, when the plate-shaped object to be suspended is transferred, the receiving claw is pushed into the lower surface side of the object to be suspended, and the side surface of the positioning protrusion formed on the positioning plate is the object to be suspended. The suspension hook is pulled up in a state where it is in contact with the entire outer surface. By the pulling up, the receiving claw is engaged with the outer peripheral portion of the lower surface of the hanging object, and the hanging object can be suspended and supported in a state in which the engagement length of the receiving claw is sufficiently secured. The object can be transported safely.

In addition, the positioning protrusion between the outer peripheral surface of the suspension target and the ventral side surface of the suspension plate in the engaged state of the receiving claw that abuts the side surface of the positioning protrusion formed on the positioning plate on the entire outer peripheral surface of the suspension target. A relatively large distance corresponding to the protruding length of can be secured.

  For this reason, when the lower surface of the receiving claw is grounded when loading and unloading the suspension target, the positioning plate can swing with respect to the suspension plate in the range where the connecting pin contacts the lower end of the pin hole made of a long hole. The suspension plate falls to the suspension target side (inside) due to the weight of the suspension target loaded on the catching claw, and the abdomen side surface comes into contact with the upper edge of the entire outer periphery of the suspension target.

  At this time, in the initial tilting of the suspension plate, a relatively large space was secured between the side surface of the suspension plate and the outer peripheral surface of the suspension target. The upper edge of the outer peripheral surface of the object to be suspended is impacted and the receiving claw is loaded with a large rotational moment in the direction of coming out of the lower surface of the object to be suspended by the impact force of the contact. The catching claw is smoothly pulled out from the lower surface of the suspension target.

  Here, if the cross-sectional shape of the bottom surface of the catching claw is a convex arc shape, the bottom surface of the catching claw makes point contact with the grounding surface, so that the contact resistance to the grounding surface is reduced, and the catching claw withdraws from the bottom surface to be suspended. It can be performed more smoothly.

  As described above, in the present invention, the engagement length of the receiving claw with respect to the lower surface of the suspension target can be sufficiently ensured by the contact of the positioning projection of the positioning plate with the entire outer peripheral surface of the suspension target. The suspension object can be safely suspended and transferred without dropping.

  In addition, since the receiving claw is engaged, an extremely large distance corresponding to the protruding length of the positioning protrusion can be secured between the ventral side surface of the suspension plate and the outer peripheral surface of the suspension target. When loading and unloading the ground, the suspension plate can be greatly tilted inward so that the side surface on the abdomen side can be brought into impact contact with the upper edge of the entire outer peripheral surface to be suspended. For this reason, the catching claw can be smoothly pulled out from the lower surface of the suspension target, and the catching claw can be prevented from being sandwiched between the lower surface of the suspension target and the grounding surface.

  Even if the catching claw is sandwiched, the inclination angle of the upper surface of the catching claw with respect to the lower surface of the suspension target, in other words, the wedge angle of the catching claw that has entered the grounding surface and the lower surface of the suspension target is large. The receiving claw can be easily pulled out from between the grounding surface and the lower surface of the suspension object by applying a small operating force to the suspension plate.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 3, the hook main body 1 has a suspension plate 2, and an inclined plate portion 3 facing obliquely upward is provided at the upper end of the suspension plate 2.

  Moreover, the receiving claw 5 which supports the lower surface outer peripheral part of suspension object A, such as an iron plate, is provided in the lower end part of the side surface 4 of the hung board 2 side. The lower surface 5a of the receiving claw 5 is an inclined surface having an upward slope from the rear end portion toward the front end. The cross-sectional shape of the lower surface 5a is a convex arc shape.

  A pin hole 6 is formed at the end of the inclined plate portion 3, and a shackle 8 for rope connection is swingably connected through a connecting pin 7 inserted into the pin hole 6.

  The hanging plate 2 is formed with a dividing groove 9 extending from the lower end to the upper end of the inclined plate portion 3, and the forming of the dividing groove 9 makes the hanging plate 2 and the inclined plate portion bifurcated. A positioning plate 10 is incorporated in the.

  The positioning plate 10 has a bent plate portion 11 disposed between the bifurcated inclined plate portions 3 at the upper portion. A pin hole 12 is formed in the bent portion of the positioning plate 10, and both end portions of the support pin 13 inserted into the pin hole 12 are inserted and supported in pin holes 14 provided in the bent portion of the suspension plate 2. The positioning plate 10 is swingable about the pin 13.

  A pin mounting hole 15 into which the connecting pin 7 is inserted is formed at the upper end portion of the bent plate portion 11 in the positioning plate 10. The pin mounting hole 15 is a round hole into which the connecting pin 7 is inserted almost exactly. On the other hand, the pin hole 6 formed in the inclined plate portion 3 is an arc-shaped long hole centering on the support pin 13.

  In the positioning plate 10, the weight of the lower end portion below the support pin 13 is heavier than the weight of the upper end portion, and due to the difference in weight, the connecting pin 7 comes into contact with the upper end of the pin hole 6 made of a long hole. The positioning plate 10 is swingable within a range where the connecting pin 7 contacts the lower end of the pin hole 6.

  A positioning protrusion protruding outward from the ventral side surface 4 of the suspension plate 2 in a state in which the connecting pin 7 is in contact with the upper end of the pin hole 6 formed of a long hole at the lower end portion of the positioning plate 10 on the ventral side surface. 16 is formed. Here, the dimension from the side surface of the positioning protrusion 16 to the tip of the receiving claw 5 is substantially equal to the dimension from the side surface of the suspension plate 20 to the tip of the receiving claw 22 in the conventional hanging hook shown in FIG. It is said.

  The suspension hook shown in the embodiment has the above-described structure, and when the plate-like suspension object A is transferred, the receiving claws 5 are attached to the outer periphery of the lower surface of the suspension object A as shown in FIG. The suspension object A is pulled up and moved to the target position by winding up a suspension rope (not shown) coupled to the shackle 8.

  Here, the engagement of the receiving claw 5 with the lower surface of the suspension target A is performed by inserting the receiving claw 5 into the lower surface side of the suspension target A and hanging the side surface of the positioning protrusion 16 formed on the positioning plate 10. The suspension hook is pulled up in a state where it is brought into contact with the entire outer surface of A and the insertion amount of the receiving claw 5 is regulated.

  As described above, the engagement length of the receiving claw 5 is sufficiently increased by pulling the suspension hook in a state where the side surface of the positioning projection 16 formed on the positioning plate 10 is in contact with the entire outer surface of the suspension target A. The suspension target A can be suspended and supported in a state of ensuring. As a result, the suspension target A can be safely transferred.

Further, in the engaged state of the receiving claws 5 that contact the side surface of the positioning projection 16 formed on the positioning plate 10 to the entire outer peripheral surface of the suspension target A, the outer peripheral surface of the suspension target A and the abdominal side of the suspension plate 2 are located. A relatively large distance δ ₀ corresponding to the protruding length of the positioning protrusion 16 is secured between the side surfaces 4.

  For this reason, when loading and unloading the suspension object A, as shown in FIG. 4 (I), if the lower surface of the receiving claw 5 is grounded to the ground surface B, the weight of the suspension object A loaded on the receiving claw 5 The suspension plate 2 falls to the suspension target A side (inner side), and the abdomen side surface 4 comes into contact with the upper edge a of the entire outer periphery of the suspension target A as shown in FIG.

  At this time, the positioning plate 10 and the suspension plate 2 are relatively swingable within a range in which the connecting pin 7 contacts the lower end of the pin hole 6 formed of a long hole. Only the suspending plate 2 tilts inward with respect to the positioning plate 10 held in contact with the positioning protrusion 16.

In the initial tilting of the suspension plate 2, a relatively large distance δ ₀ was ensured between the side surface of the suspension plate 2 and the outer peripheral surface of the suspension target A. While falling down abruptly, it falls down sharply and the side surface 4 comes into impact contact with the upper edge a of the entire outer periphery of the suspension target A. Due to the impact force of the contact, the suspension plate 2 is loaded with a large rotational moment in the direction in which the receiving claw 5 comes out of the lower surface of the object A to be suspended, and the lower surface of the receiving claw 5 extends from the front end to the rear end. Since it has an arc shape in two directions, the length direction and the width direction, and makes a point contact with the ground contact surface B, the contact claw 5 has a small contact resistance. As shown in FIGS. 4 (III) and 4 (IV) The suspension object A can be smoothly pulled out from the lower surface of the suspension object A and is not sandwiched between the suspension object A and the ground contact surface B.

  Even if the catching claw 5 is sandwiched, the wedge angle α of the catching claw 5 entering between the suspension target A and the ground surface B is large. By applying a small operating force F in the direction indicated by the arrow 4 (II), the catching claw can be easily pulled out from between the suspended object A and the ground contact surface B.

Front view showing an embodiment of a hanging hook according to the present invention Right side view of FIG. Exploded perspective view of hanging hook (I) thru | or (IV) is a front view which shows in stepwise the state where the catching claw is pulled out when the object to be suspended is grounded (I) is a front view showing a conventional hanging hook, and (II) is a front view showing a state in which a catching claw is sandwiched between a ground plane and an iron plate.

Explanation of symbols

2 Suspension plate 3 Inclined plate portion 4 Side surface 5 Receiving claw 5a Lower surface 6 Pin hole 7 Connecting pin 8 Shackle 9 Split groove 10 Positioning plate 11 Bending plate portion 13 Support pin 15 Pin mounting hole 16 Positioning protrusion

Claims (2)

A receiving claw for supporting the outer peripheral portion of the lower surface of the plate-like suspension target is provided at the lower end of the side surface of the hanging plate having an inclined plate portion protruding obliquely upward, and the lower surface of the receiving claw is formed from the rear end portion. In the hanging hook that has an arcuate surface that is inclined with an upward slope toward the tip, and that supports the shackle in a swingable manner by a connecting pin supported at the end of the inclined plate portion,
The suspension plate is formed with a split groove having a bifurcated suspension plate and the inclined plate portion from the lower end portion to the upper end of the inclined plate portion, and a positioning plate having a bent plate portion at the top is incorporated in the split groove, The bent portion of the positioning plate is supported so as to be swingable around a support pin supported at both ends by the bent portion of the suspension plate, and a pin hole for inserting a connecting pin formed at the end of the inclined plate portion is provided. An arc-shaped long hole centered on the support pin, a pin mounting hole for inserting and supporting the connection pin is formed at an end of the bent plate portion, and a lower end portion on the ventral side of the positioning plate, A positioning projection is provided for projecting outward from the abdomen side surface of the suspension plate in a state where the connecting pin is in contact with the upper end of the pin hole formed of a long hole and positioning the entire outer peripheral surface of the suspension target. Hanging hook.   The hanging hook according to claim 1, wherein a cross-sectional shape of a lower surface of the receiving claw is a convex arc shape.

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