JP2009292635A5 - - Google Patents

Description

Hanging tool

  The present invention relates to a hanging tool used for suspending movement of a suspended object such as H-shaped steel or I-shaped steel used for a beam or the like of a building.

In order to suspend and move suspended objects such as H-shaped steel and I-shaped steel used for building beams, etc., the flanges of these suspended objects are grasped, and hook portions are formed in holes formed in the flanges. A hanging tool that engages (inserts) a hook and prevents the hook part from falling off the flange and the object to be hung from falling is used. The conventional suspension is difficult to visually confirm the state in which the hook part is engaged with the drilled hole formed in the flange of the suspended object, and the suspended object flange is not sufficiently inserted into the flange insertion part. That is, there is a possibility that the lifting movement is started in a state where the hook portion is not engaged with the drilled hole. Therefore, the applicant of the present application has devised a lifting device designed to prevent the suspended object from being lifted in an unstable state with respect to the suspended object flange, and has previously filed an application (patent). Reference 1) .

As shown in FIG. 5, this hanging tool is provided with a safety member 102 having an operating piece 102 a rotatably at a position above the flange insertion portion 101 in the pair of side plates 100 in which the flange insertion portion 100 is formed, The urging force is applied to the safety member 102 by the torsion spring 103 so that the operating piece 102a is brought into contact with the stopper 104 and restricted to a position that intersects perpendicularly to the insertion direction of the flange insertion portion 101. The safety member 102 receives a pressing force from the flange 105 inserted into the flange insertion portion 101 and is pushed up above the flange insertion portion 101, so that the flange 105 is not completely inserted into the flange insertion portion 101 as shown in the figure. When the mounting operation of the hanger is stopped in a state where the hole 106 in the flange 105 does not match the hook portion 107, the spring force of the torsion spring 103 increased by the elastic deformation is applied to the operating piece of the safety member 102. By applying to the flange 105 through 102a,
The flange 105 is excluded from the outside of the flange insertion portion 101.

JP 2008-074621 A

  However, the above-described hanging tool still has problems to be solved. That is, when the flange 105 is not completely inserted into the flange insertion portion 101 and the mounting operation of the lifting tool is stopped in a state where the hole 106 of the flange 105 does not match the hook portion 107, the hook portion 107 is When the portion near the hole 106 in the flange 105 is pushed up and pressed against the stopper 104, and the operating piece 102 a pushes down the tip of the flange 105 and presses against the bottom surface of the flange insertion portion 101, the gap between the upper surface of the flange 105 and the stopper 104 is increased. Further, the lower surface corner of the flange 105 and the bottom surface of the flange insertion portion 101 are brought into contact with each other by line contact, and a relatively large frictional force is generated between them. Therefore, there is a possibility that the flange 105 cannot be removed from the flange insertion portion 101.

  The present invention has been made in view of the above-described conventional problems, and provides a suspension device that can effectively prevent the suspended object from being lifted in an unstable state with respect to the suspended object. It is aimed.

  In order to achieve the above object, a hanging tool of the invention according to claim 1 is provided with a pair of side plates having flange insertion portions that are spaced apart from each other and formed by cutting horizontally in the lower portion thereof, and A movable plate that is guided and supported between a pair of side plates so that it can move up and down, and a hook portion is raised and formed at the lower portion thereof, and is rotatably provided around the flange insertion portion of the pair of side plates. A safety member provided with a biasing force so as to be positioned in the vicinity of the insertion port, and a roller provided on the side plate in an arrangement in which at least a lower end portion enters the flange insertion portion and is orthogonal to an insertion direction of the flange insertion portion. A roller that rotates about an axis, and the hook portion is in a state of being retracted from the inside of the flange insertion portion at the lower movement position of the movable plate, and enters the flange insertion portion at the upper movement position to be suspended. The safety member engages with a drilled hole or a recess formed in the flange, and the safety member resists the biasing force according to the insertion state when the flange of the suspended object is inserted into the flange insertion portion. When the hook portion is not engaged with the drilled hole or the recess, the flange acts on the flange to be pushed out from the flange insertion portion by the biasing force, and the roller is pressed by the safety member. It is comprised so that it may rotate in the direction which promotes the movement of the flange to be performed.

In the hanging tool of the present invention, the flange insertion portion into which the flange of the suspended object is inserted is provided at the lower part of the pair of side plates, and when the flange of the suspended object is inserted into the flange insertion portion, A hook portion is provided at the lower portion of the movable plate so as to engage with a drilled hole or a recess formed in the flange (formed on the lower surface of the flange in the case of a recess). A safety member is provided around the flange insertion portion of the side plate and biased toward the insertion direction of the flange insertion portion and displaced against the biasing force according to the insertion state of the flange into the flange insertion portion. Yes. When the urging force is applied to the safety member in the direction of the insertion port of the flange insertion portion, and the flange is not fully inserted into the flange insertion portion (the hook portion is sufficient for the hole or recess in the flange) If not engaged), the urging force removes the flange from the flange insertion portion. In this case, since the roller acts to promote the movement of the biased flange, a situation in which the flange that is not sufficiently inserted into the flange insertion portion is caught in the flange insertion portion and cannot be discharged. There is no fear. Thereby, it can avoid that the to-be-suspended object is lifted in the unstable engagement state.

  The hanging tool of the invention according to claim 2 is the hanging tool of the invention according to claim 1, wherein the safety member is provided at the distal end portion of the operating piece that moves forward and backward with respect to the flange insertion portion as it rotates. An engagement protrusion that engages with the tip end surface of the inserted flange is provided, and the position of the operation piece is regulated by the roller shaft of the roller when the operation piece advances toward the flange insertion portion. It is a feature.

  According to the lifting tool of the invention of claim 2, since the engaging protrusion of the operating piece of the safety member engages with the front end of the flange that has entered the flange insertion portion, the urging force of the safety member is applied to the flange. It can be effectively applied as an extrusion force. Further, since the roller shaft of the roller is also used as a stopper for restricting the position of the operating piece of the safety member, the number of parts can be reduced and the cost can be reduced.

  According to the present invention, when the mounting operation is stopped in a state where the flange is not completely inserted up to the predetermined position in the flange insertion portion, the hook portion pushes up the vicinity of the hole formed in the flange, so that the lifting device is Since the surface near the perforation hole of the flange comes into contact with the roller by rotating around, the urging force of the safety member is applied in the direction of pushing out from the flange insertion portion to the flange, and the flange is flanged by the rotation of the roller. Since it facilitates moving the insertion portion toward the outside, the flange can be reliably discharged to the outside of the flange insertion portion.

(A), (b) is the front view and side view of a hanging tool which concern on one embodiment of this invention. The perspective view seen from the downward direction of a hanging tool same as the above. The front view for demonstrating the operating method of a hanging tool same as the above. The expanded sectional view of the principal part of a hanging tool same as the above. Sectional drawing of the hanging tool shown for the comparison.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the best embodiment according to the hanging tool of the present invention will be described in detail based on the drawings. It should be understood that the embodiment described below is illustrative in all respects and not restrictive. The technical scope of the present invention is shown not by the content disclosed in the embodiment but by the description of the scope of claims, and further includes all modifications within the meaning and scope equivalent to the scope of claims. Should be understood.

  The structure of the hanging tool 1 according to the embodiment of the present invention will be described with reference to FIGS. 1 and 2. 1A and 1B are a front view and a side view showing a hanger 1 according to an embodiment of the present invention, and FIG. 2 is a perspective view of the hanger 1 according to the embodiment as viewed from below. is there. Here, for the sake of convenience, the upward direction of the paper surface in FIG. 1A is referred to as the upper side, the downward direction is referred to as the downward direction, the left direction is referred to as the front side, and the front and back direction of the paper surface is referred to as the lateral side.

  The hanger 1 is provided outside each of a pair of side plates 10 facing each other with a gap, a movable plate 20 disposed in a space between the side plates 10, and the pair of side plates 10. It is provided with a pair of safety members 30 positioned so as to close a flange insertion portion to be described later in a normal state.

The pair of side plates 10 are flat plate-like members, and flange insertion portions 11 that extend in the horizontal direction and open to the front are formed in the lower portions of the side plates 10. The guide hole 12 is formed. In addition, a grip piece 13 that protrudes rearward is formed at a rear portion of the guide hole 12 in each side plate 10.

  The flange insertion portion 11 is a portion into which a flange of a suspended object such as H-shaped steel or I-shaped steel is inserted, and the depth of the groove portion is set corresponding to the flange. Further, the projecting piece 18 forming the lower piece of the flange insertion portion 11 has a width dimension and the like so as to have sufficient mechanical strength to support the flange from below.

  The guide hole 12 is an insertion bolt 41 (a horizontal axis of the lifting tool) of a jackle 40 (an example of a lifting tool, which is connected to a crane hook via a wire rope) suspended from a lifting equipment (not shown). Is an oval through-hole that is long in the vertical direction. The short diameter dimension of the guide hole 12 is set to be slightly larger than the outer diameter of the insertion bolt 41 inserted therethrough, and the insertion bolt 41 is guided and supported through the guide hole 12 so as to be movable up and down. .

  As shown in FIG. 1B, the pair of side plates 10 is fastened and fixed by a plurality (four in the illustrated example) of insertion bolts 15A to 15D with a spacing member 14 interposed therebetween. The spacing member 14 is sandwiched between the pair of side plates 10 to keep the gap size between the side plates 10 constant, and the gap size is the thickness dimension of the movable plate 20 disposed between the side plates 10. The movable plate 20 is held so as to be movable in the vertical direction in the gap.

  The movable plate 20 is a substantially J-shaped flat plate member in a side view, and is provided so as to be movable up and down in a gap sandwiched between the pair of side plates 10 as described above. At the lower part of the movable plate 20, a hook portion 21 is formed that protrudes forward and bends and extends upward in the middle. The upper end portion of the movable plate 20 protrudes forward and a locking piece 22 that protrudes forward. A pressing lever 23 is formed, and the pressing lever 23 is opposed to the gripping piece 13 in the upper direction. As a result, the operator can easily move the movable plate 20 down by pressing down the pressing lever 23 by operating the pressing lever 23 with the finger placed on the gripping piece 13.

  When the movable plate 20 is moved downward, the hook portion 21 of the movable plate 20 is retracted below the flange insertion portion 11 so that the flange of the suspended object can be inserted into the flange insertion portion 11. When the pressing force to the pressing lever 23 is loosened in a state where the flange is received in the flange insertion portion 11, the movable plate 20 is moved up by the spring biasing force described later, and the hook portion 21 is inserted into the perforation of the flange. Can be engaged. When the hook portion 21 is removed from the perforation of the flange, the hook portion 21 is moved downward by pulling the rope 50 wound around the rope insertion hole 24 at the rear end of the lower end of the movable plate 20. Is called. The rope 50 is also used to accurately guide the suspended object to the destination.

  The hook portion 21 of the movable plate 20 is inserted into and engaged with a building assembly hole formed in the flange of the suspended object. When the suspended object is suspended and moved, Is to prevent it from falling off the hanger 1 and its upward projecting dimension is set so as to be adapted to engage with the hole formed in the flange of the suspended object.

  Since the movable plate 20 is biased upward by a spring described later, the locking piece 22 of the movable plate 20 is positioned slightly above the upper end portion of the guide hole 12 of the side plate 10 at the normal time. . Therefore, when the insertion bolt 41 of the jackle 40 is inserted into the guide hole 12 of the side plate 10, the locking piece 22 of the movable plate 20 is positioned above the insertion bolt 41. When the suspended object is lifted in this state, the horizontal axis of the lifting tool applies an upward biasing force to the locking piece 22, thereby preventing the movable plate 20 from moving downward, and the movable plate 20. The hook portion 21 reliably maintains the engaged state with respect to the drilled hole of the flange of the suspended object.

  The pressing lever 23 pushes down the movable plate 20 against a biasing force (a force that pulls up the movable plate 20 upward) of a spring 26 described later by applying a pressing force to the gripping piece 13. .

  A spring latch pin 25 is provided at a location above the rope insertion hole 24 of the movable plate 20, while a spring latch pin 16 is bridged between the side plates 10 at a location below the gripping piece 13 of the side plate 10. A tension spring 26 is installed between the spring latch pins 25 and 16. The movable plate 20 is urged upward by a tension spring 26, and is regulated so that the inner surface of the lower end is in contact with the insertion bolt 15D and is positioned at the upper limit position. The movement in the front-rear direction is restricted by the insertion bolts 15A and 15D below the flange insertion portion 11 and the gripping piece 13. This prevents the movable plate 20 from falling out of the gap formed by the pair of side plates 10.

  Furthermore, the safety member 30 is attached to the outer surface of each of the pair of side plates 10 in the hanger 1. The safety member 30 has a substantially P-shape when viewed from the side, and an upper ring-shaped portion is rotatably attached by an insertion bolt 15B above the flange insertion portion 11. The safety member 30 is provided with an operating piece 30a extending from the ring-shaped portion and an engaging protrusion 30b that bulges forward from the tip of the operating piece 30a.

  The safety member 30 is biased forward by a torsion spring 31 having one end locked to the side plate 10 and the other end locked to the tip of the operating piece 30a, and is suspended in the flange insertion portion 11. Is not inserted, the forward rotation is restricted by contacting a roller shaft 33 of a roller, which will be described later, and the operating piece 30a is held in the vertical arrangement intersecting the flange insertion portion 11. When the suspended object flange is inserted into the flange insertion portion 11, the safety member 30 is rotated while resisting the biasing force of the torsion spring 31 under the pressing force from the flange, and the flange insertion portion 11. Pushed up. Further, since the insertion of the suspended object flange into the flange insertion portion 11 is insufficient, the hook portion 21 does not have a relative arrangement that matches the drilled hole of the suspended object flange, and the hook portion 21 is not connected to the suspended object flange. When the insertion of the suspended object flange into the flange insertion portion 11 is stopped without being inserted into the hole, the safety member 30 is rotated forward by the urging force of the torsion spring 31, and the operating piece 30a is moved. The suspended object flange is pushed out from the flange insertion portion 11. Thus, the lifting work of the suspended object is prevented from being performed in a state where the hook portion 21 is not inserted into the hole formed in the suspended object flange.

  The side plate 10 is provided with a roller 32 at a location above the entrance of the flange insertion portion 11. As described above, the roller shaft 33 that rotatably supports the roller 10 also has a function as a stopper for restricting the forward rotation position of the safety member 30. The roller 32 protrudes slightly below the lower end of the side plate 10 to which the roller 32 is attached, and enters the flange insertion portion 11.

Next, the operation of the hanger 1 of this embodiment will be described with reference to FIG. FIG. 3 is a front view for explaining a method of operating the hanger 1 (attachment to the H-shaped steel flange). First, in a state where the flange 61 of the H-shaped steel 60 is not inserted into the flange insertion portion 11, the hook portion 21 of the movable plate 20 enters in an arrangement perpendicular to the flange insertion portion 11, as clearly shown in FIG. In addition, the operating piece 30a of the safety member 30 intersects with the flange insertion portion 11 in an arrangement perpendicular to the side. Then, when the hanger 1 is moved to the vicinity of the H-shaped steel 60 that is the object to be hung and the hanger 1 is mounted on the flange 61, a force is applied so as to grasp the gripping piece 13 and the pressing lever 23 simultaneously. 3, the pressing lever 23 is pushed down from the two-dot chain line position to the solid line position to move the movable plate 20 from the two-dot chain line position to the solid line position. As a result, the hook portion 21 of the movable plate 20 is retracted below the flange insertion portion 11.

  Subsequently, when the operator operates to insert the flange 61 of the H-shaped steel 60 into the flange insertion portion 11 with the pressing lever 23 depressed, as shown on the left side of FIG. The operating piece 30 a is pressed by the flange 61 that advances backward in the flange insertion portion 11, rotates backward against the urging force of the torsion spring 31, and is positioned above the flange insertion portion 11.

  When the pressing force to the pressing lever 13 is weakened in a state where the flange 61 is completely inserted into the flange insertion portion 11, the movable plate 20 moves up, and the hook portion 21 of the movable plate 20 pierces the flange 61. The hole 62 is securely engaged. Once the hook portion 21 is engaged with the drilled hole 62 of the flange 61, the movable plate 20 is biased upward by the biasing force of the spring 26, so that the hanger 1 is removed from the flange 61 of the H-shaped steel 60. It will not drop out. When the H-shaped steel 60 is lifted and moved from this state, the insertion bolt 41 of the jackle 40 pulls up the locking piece 22, so that a force to pull up acts on the hook portion 21. The hook portion 21 can reliably maintain the engagement state of the flange 61 with respect to the drilled hole 62 even if such is added.

  By the way, when the operator releases the pressing force of the pressing lever 23 in a state where the flange 61 is not completely inserted up to the predetermined position in the flange insertion portion 11, as shown in FIG. Since the hole 82 does not match the hook portion 21, when the hook portion 21 pushes up the vicinity of the drill hole 62 of the flange 61, the suspension 1 rotates around the flange 61, and the drill hole of the flange 61 is rotated. The upper surface near 62 abuts on the roller 32. At this time, since the engaging protrusion 30 b of the safety member 30 is in contact with the corner of the front end surface of the flange 61, the spring force increased by the restoring force due to the elastic deformation of the torsion spring 31 is applied to the flange 61. The flange 61 is effectively provided in the direction of pushing out from the insertion portion 11, and the flange 61 can be easily moved outward of the flange insertion portion 11 by the rotation of the roller 32 in the arrow direction. Therefore, when the mounting operation is stopped in a state where the insertion of the flange 61 into the flange insertion portion 11 is incomplete, the hook portion 21 is lifted up with the hook portion 21 not inserted into the drilled hole 62 of the flange 61. It is possible to reliably prevent the movement from being started.

  In the lifting tool of the present invention, the flange urged to the inlet side of the flange insertion portion by the safety member is smoothly moved by the roller and excluded from the outside of the flange insertion portion. It can be suitably used for hanging movement.

DESCRIPTION OF SYMBOLS 10 Side plate 11 Flange insertion part 21 Hook part 20 Movable plate 30 Safety member 30a Actuation piece 30b Engagement protrusion 31 Torsion spring (biasing force)
32 Roller 33 Roller shaft