JP5110014B2 - Hook device - Google Patents

Description

  The present invention relates to a hook device used for crane work.

Conventionally, the thing of patent documents 1 is known as a hook device used for crane work.
This hook device is mounted on a wheel crane. In this wheel-type crane, the hook device can be tilted to a predetermined angle close to the horizontal and stored at the tip of the boom by winding a rope for hanging the hook device.
Specifically, as shown in FIGS. 3 and 4 of Patent Document 1, when the main hook (10) as the hook device is wound up, the main hook upper surface (10a) is brought into contact with the main hook storage fitting (3) ( 11b), and the hook upper surface (10a) and the contact surface (11b) are in close contact with each other, so that the main hook hoisting force is applied to the storage bracket (3) as the driving force.

Registered Utility Model No. 2585904

However, in the conventional hook device as described above, as shown in FIG. 8, when the end portion of the rope R is fixed to the fixing portion 200a on the hook device 200 side (that is, the multiplication factor of the rope R on the hook device 200 side). Has a problem that the hook device 200 is tilted by a force acting on the fixed portion 200a as compared to a state in which the multiplication is even.
In this case, when the hook device 200 is rolled up, proper connection between the hook device 200 and the storage fitting 201 is hindered, so that the hook device 200 or the storage fitting 201 is damaged or the stored hook device 200 is misaligned. It tends to happen and becomes a problem.

  In consideration of the above circumstances, the present invention can suppress the inclination when the end of the rope is fixed to the hook device side and the hoisting and lowering are performed (that is, when using the odd number hook). An object is to provide a hook device.

  A first feature of the hook device according to the present invention is a hook device that is suspended so as to be able to be rolled up and down via a fuselage-side sheave provided on the fuselage side. A hook-side sheave on which a rope extending from the airframe side is hung, a fixing portion for fixing the end of the rope to the main body portion, and extending from the fixing portion toward the airframe-side sheave And a first guide part that restricts relative movement of the rope in a direction away from the center of the hook-side sheave.

According to this configuration, the movement of the rope extending from the fixed portion toward the body-side sheave in the direction away from the center of the hook-side sheave is restricted by the first guide portion. Thereby, it can suppress that force acts on the fixing | fixed part in the direction which inclines a hook apparatus.
Therefore, when the end portion of the rope is fixed to the fixing portion on the hook device side and the winding device is wound up and down, it is possible to suppress the inclination of the hook device that is suspended.

  The second feature of the hook device according to the present invention is that the rope extending from the fixed portion toward the fuselage-side sheave restricts relative movement in a direction approaching the center of the hook-side sheave. It is to provide a guide part.

  According to this configuration, the second guide portion restricts the rope extending from the fixed portion toward the fuselage-side sheave from moving in a direction approaching the center of the hook-side sheave. By providing the guide portion, the rope can be reliably held within a predetermined range. Thereby, it can prevent that a rope remove | deviates from a predetermined position.

  According to a third feature of the hook device according to the present invention, the first guide portion has a concave bent surface, and a trough portion of the bent surface is brought into contact with the rope to move the rope. It is to regulate.

  According to this configuration, the rope can be stably supported by the concave bent surface.

  A fourth feature of the hook device according to the present invention is that the first guide portion is provided in the main body portion so as to be rotatable about an axis parallel to the rotation axis of the hook-side sheave. It is possible to fix to the main body at a predetermined position in the direction.

  According to this configuration, since the space for fixing the end portion of the rope to the main body portion can be secured by rotating the first guide portion, the end portion of the rope can be easily attached to the main body portion. Can be fixed.

  The fifth feature of the hook device according to the present invention is that the main body portion is configured to have a pair of plate-like members, and the first guide portion is sandwiched between the pair of plate-like members. Is provided in the space.

  According to this configuration, when the first guide portion protrudes from the space between the pair of plate-like members, the first guide portion exists around the hook device when the hook device is lifted or retracted. It is possible to prevent interference with other members.

  According to the present invention, when the end portion of the rope is fixed to the fixing portion on the hook device side and the hoist device is wound and lowered, it is possible to suppress the inclination of the hook device that is suspended.

The figure which shows the hook apparatus which concerns on embodiment of this invention. The figure which looked at the hook apparatus shown in FIG. 1 from the arrow A direction. The enlarged view of the hook apparatus shown in FIG. The enlarged view of the hook apparatus shown in FIG. The figure which shows the guide in the hook apparatus shown in FIG. The figure which shows the conventional hook apparatus.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.

<Outline of hanging state of hook device 1>
As shown in FIG.1 and FIG.2, the hook apparatus 1 which concerns on this embodiment is suspended from the front-end | tip of the boom 101 of a crane. A fuselage side sheave 102 is provided at the tip (the fuselage side) of the boom 101, and a hook side sheave 13 is provided in the hook device 1. An upper swing body (not shown) of the crane is provided with a winch, and a rope R extending from the winch is hung around the body-side sheave 102 and the hook-side sheave 13, and the end of the rope R is hooked. It is fixed to the device 1. Further, a storage fitting 103 for storing the hook device 1 is suspended at the tip of the boom 101 so as to be freely rotatable.
Then, by winding the rope R with a winch, the hook device 1 is raised, and the upper end portion of the hook device 1 is connected to the storage fitting 103. Further, by winding the rope R with a winch, the hook device 1 is moved in the longitudinal direction of the main body plates 11 and 12 (main body portions) of the hook device 1 around the pivot shaft 103a of the storage metal fitting 103 together with the storage metal fitting 103. Swings to a position substantially parallel to the axial direction of the boom 101. As a result, the hook device 1 is stored at the tip of the boom 101.

  In the following description, the longitudinal direction (the direction of the arrow X in FIGS. 1 and 2) of the main body plates 11 and 12 of the hook device 1 is the “device vertical direction”, and the direction parallel to the rotation axis of the hook-side sheave 13 (see FIG. 2 is referred to as “device width direction”, and a direction perpendicular to the device vertical direction and perpendicular to the device width direction (arrow Y direction in FIG. 1) is referred to as “device front-rear direction”. In the vertical direction of the apparatus, the direction indicated by the arrow X1 is upward, the direction indicated by the arrow X2 is downward, the direction indicated by the arrow Y1 is forward, and the direction indicated by the arrow Y2 is backward.

<Schematic configuration of hook device 1>
As shown in FIGS. 1 and 2, the hook device 1 is for a socket for fixing a hook 10, a pair of main body plates 11 and 12, a hook-side sheave 13, and a rope R to the main body plates 11 and 12. A rotation shaft 24 (fixed portion) and a guide 15 (first guide portion) provided to be rotatable with respect to the main body plates 11 and 12 are provided.
The pair of body plates 11 and 12 are arranged in parallel to each other, and are fixed to each other with a plurality of bolts at a predetermined interval. And the base end of the hook 10 is pinched | interposed freely between the said pair of main body plates 11 and 12. As shown in FIG. That is, both ends of the hook rotation shaft 20 extending in parallel with the apparatus width direction Z are fixed to the pair of main body plates 11 and 12 so as to be rotatable. 10 is suspended. The hook rotation shaft 20 is arranged in the center of the apparatus front-rear direction Y in the vicinity of the lower ends of the main body plates 11 and 12. The hook 10 is provided with respect to the hook rotation shaft 20 so as to be rotatable around an axis extending in a direction orthogonal to the hook rotation shaft 20.

  In addition, by raising the hook device 1 in a posture in which the longitudinal direction of the main body plates 11 and 12 is directed to the vertical direction, the hook device 1 is appropriately connected to the storage fitting 103, and the hook device 1 is moved to a predetermined position. Can be stored.

  Next, details of the configuration of each unit will be described with reference to FIGS. 3 and 4. In FIG. 3, the main body plate 11 is partially cut away.

<Configuration of hook side sheave 13>
A hook-side sheave 13 is rotatably sandwiched between the pair of main body plates 11 and 12. That is, both ends of the sheave rotation shaft 23 of the hook-side sheave 13 are fixed to the pair of main body plates 11 and 12. The sheave turning shaft 23 is disposed in the center of the main body plates 11 and 12 in the longitudinal direction Y of the apparatus in parallel with the hook turning shaft 20.
The hook-side sheave 13 includes three sheaves 13a, 13b, and 13c, and a rope R (indicated by a one-dot chain line in the drawing) extending from the machine body is wound around the sheave 13a. Further, the hook-side sheave 13 is provided at a position close to the one main body plate 12 in the apparatus width direction Z. That is, the hook-side sheave 13 is arranged in the apparatus width direction Z such that the center position of the hook-side sheave 13 is shifted from the center position of the pair of main body plates 11, 12 and approaches one main body plate 12. Yes.

<Configuration of fixed part of rope end>
Both ends of a socket rotation shaft 24 for rotatably mounting the rope socket 14 are fixed to the pair of main body plates 11 and 12. The socket rotation shaft 24 is positioned between the sheave rotation shaft 23 and the hook rotation shaft 20 in the vertical direction X of the apparatus and at a position shifted forward from the center in the apparatus front-rear direction Y. It is arranged parallel to the direction Z.
In addition, a bracket 16 for supporting the socket rotation shaft 24 is fixed to one of the main body plates 11. The bracket 16 includes a connection plate 16 a fixed to the main body plate 11, and a support plate 16 b fixed to the connection plate 16 a and extending above the connection plate 16 a in parallel to the main body plate 11. The support plate 16b has a through hole into which the socket rotation shaft 24 is inserted. Further, the support plate 16b is disposed in a position different from the range in which the hook-side sheave 13 is disposed in the apparatus width direction Z (that is, a position where the hook-side sheave 13 does not exist above). Specifically, the support plate 16 b is disposed so as to support the vicinity of the main body plate 11 on the socket rotation shaft 24.
The rope socket 14 has a bifurcated lower end, and a through hole is formed through each of the bifurcated portions. The rope socket 14 is arranged with the support plate 16b sandwiched between the bifurcated portions so that the through holes that respectively penetrate the bifurcated portions and the through holes of the support plate 16b are coaxial. And the rotation axis | shaft 24 for sockets has penetrated the through-hole of the bifurcated part of the rope socket 14, and the through-hole of the support plate 16b.

  The rope socket 14 is secured to the tip end of the rope R. Specifically, the rope socket 14 is formed with a through hole whose diameter increases toward the lower end, and the tip of the rope R is inserted from the small diameter side of the through hole, The rope R is wound around a tapered wedge body, and the tip end of the rope R is extended from the small diameter side. In this case, the rope body R is prevented from coming off from the rope socket 14 by the wedge body being pushed into the small diameter side of the through hole.

<Configuration of guide 15>
The configuration of the guide 15 will be described with reference to FIGS.
FIG. 5 is a view showing the shape of the guide 15. FIG. 5A is a view of the wire pressing portion 54 of the guide 15 as viewed from above. FIG. 5B shows the guide 15 shown in FIG. FIG. 5C is a view showing the guide 15 shown in FIG.

As shown in FIGS. 3 and 4, both ends of a guide rotation shaft 25 for rotatably mounting the guide 15 are fixed to the pair of main body plates 11 and 12. The guide rotation shaft 25 is arranged in the apparatus longitudinal direction Y in a position closer to the front edge of the main body plates 11 and 12 than the socket rotation shaft 24 in parallel with the apparatus width direction Z. .
As shown in FIG. 4, the guide 15 is formed in a generally arcuate shape when viewed in the apparatus width direction Z, and is rotatable between a pair of body plates 11 and 12 around a guide rotation shaft 25. Is provided. As will be described later, the guide 15 is constituted by a plurality of members, and the plurality of members are joined to each other by welding.

  As shown in FIG. 5, the guide 15 includes a cylindrical base end cylindrical shaft portion 51 through which the guide rotation shaft 25 is inserted, and one end fixed to the base end cylindrical shaft portion 51 and the hook-side sheave 13 having a diameter. A sheave cover portion 52 covering from the outer side in the direction, an intermediate cylindrical shaft portion 53 provided in parallel to the proximal cylindrical shaft portion 51 at the other end of the sheave cover portion 52, and a wire pressing portion 54 extending from the intermediate cylindrical shaft portion 53 have.

The sheave cover portion 52 has a first connecting plate 52a disposed so as to connect the proximal cylindrical shaft portion 51 and the intermediate cylindrical shaft portion 53, and an arcuate shape connected to the edge of the first connecting plate 52a. Plate-like cover 52b and a second connecting plate 52c for connecting the base cylindrical shaft portion 51 and the plate-like cover 52b along the edge of the first connecting plate 52a.
The first connecting plate 52 a is disposed perpendicular to the axis of the base end cylindrical shaft portion 51. The first connecting plate 52a and the plate-like cover 52b are arranged so as to be orthogonal to each other. The second connecting plate 52c is arranged in parallel with the proximal cylindrical shaft portion 51, and is arranged so as to be orthogonal to the first connecting plate 52a and the plate-like cover 52b.
Then, the guide 15 is rotated about the proximal cylindrical shaft portion 51, and a straight line connecting the intermediate cylindrical shaft portion 53 and the proximal cylindrical shaft portion 51 as viewed from the apparatus width direction Z is the longitudinal length of the main body plates 11, 12. When parallel to the direction (hereinafter, this position is referred to as “guide fixing position”), the plate cover 52 b is disposed at a position along the outer periphery of the hook-side sheave 13.

The wire pressing portion 54 includes a U-shaped plate 54a formed of a U-shaped curved plate, a third connecting plate 54b that connects the U-shaped plate 54a and the intermediate cylindrical shaft portion 53, and the third connecting plate 54b. And a pair of reinforcing plates 54c provided on both sides.
The third connecting plate 54 b is fixed to the outer peripheral surface in the vicinity of one end of the intermediate cylindrical shaft portion 53 so as to be orthogonal to the axis of the intermediate cylindrical shaft portion 53.
When the guide 15 is in the guide fixing position, the U-shaped plate 54a is positioned directly above the support plate 16b of the bracket 16 (same position as the support plate 16b in the apparatus front-rear direction Y and the apparatus width direction Z). It is provided at the tip of the third connecting plate 54b. The U-shaped plate 54a is inclined such that when the guide 15 is in the guide fixing position, the U-shaped groove in the U-shaped plate 54a is inclined slightly forward (Y1 direction) as it goes upward (X1 direction). It is fixed to the third connecting plate 54b.
Note that the U-shaped plate 54a may be arranged so that the U-shaped groove extends in parallel with the apparatus vertical direction X when the guide 15 is in the guide fixing position.
The pair of reinforcing plates 54c are arranged so as to be orthogonal to the third connecting plate 54b, and are connected to the U-shaped plate 54a, the third connecting plate 54b, and the intermediate cylindrical shaft portion 53, respectively.

The body plates 11 and 12 are formed with guide fixing through holes 11a and 12a that are coaxial with the shaft hole of the intermediate cylindrical shaft portion 53 when the guide 15 is in the guide fixing position (see FIG. 4). ).
By inserting the fixing pin 60 into the shaft holes of the guide fixing through holes 11 a and 12 a and the intermediate cylindrical shaft portion 53, the guide 15 can be fixed so as not to rotate with respect to the main body plates 11 and 12.

  In the present embodiment, the lock member 61 is detachably attached to the surface of the main body plate 11 facing the center side in the apparatus width direction Z. The lock member 61 is fixed to the main body plate 11 by screwing the shaft of the bolt 62 penetrating the main body plate 11 into a position where it comes into contact with the reinforcing plate 54c of the guide 15 from the front. Thereby, the front end side (that is, the position close to the U-shaped plate 54a) of the guide 15 relative to the intermediate cylindrical shaft portion 53 can be supported by the lock member 61 from the front.

During the operation using the hook device 1, the guide 15 is disposed at the guide fixing position, and the fixing pin 60 is inserted into the guide fixing through holes 11 a and 12 a and the shaft hole of the intermediate cylindrical shaft portion 53, and the lock member 61 is held in a state of being attached to the main body plate 11.
On the other hand, when attaching the rope R to the hook device 1 or removing the rope R from the hook device 1, the fixing pin 60 and the lock member 61 are removed, and the guide 15 can be rotated. Accordingly, as shown by a two-dot chain line in FIG. 3, the guide 15 is rotated away from the sheave rotation shaft 23, so that the upper portion of the bracket 16 in the hook device 1 can be widely opened. As a result, the rope socket 14 can be easily attached to and detached from the hook device 1.

<Support of rope R by guide 15>
When the guide 15 is fixed at the guide fixing position, the guide 15 is a portion of the rope R that extends from the rope socket 14 to the fuselage-side sheave 102 (the portion indicated by the symbol Ra in FIGS. 3 and 4; hereinafter, the rope end vicinity portion Ra. Support).
Specifically, the guide 15 is in contact with the rope end vicinity portion Ra on the bottom surface (valley portion) of the concave U-shaped surface (bending surface) S of the U-shaped plate 54a, and is in front of the rope end vicinity portion Ra (Y1). Direction)). That is, when the guide 15 is fixed at the guide fixing position, the rope end vicinity portion Ra is rotated about the socket rotation shaft 24 in the direction away from the sheave rotation shaft 23 (see FIG. 3 is restrained from rotating in the direction indicated by the arrow R1.

  The rope end vicinity Ra is moved rearward (in the Y2 direction), that is, in the direction indicated by the arrow R2 in FIG. It is restrained by a bolt shaft 17 (second guide portion) for sandwiching and fixing the plates 11 and 12.

(Effect of this embodiment)
(1)
As described above, the hook device 1 according to the present embodiment is suspended so as to be able to be wound up and down through the machine body sheave 102 provided on the boom 101 (machine body side) of the crane.
The hook device 1 includes a pair of main body plates 11 and 12 (main body portions) to which a hook 10 is fixed, and a pair of main body plates 11 and 12 on which a rope R extending from the body-side sheave 102 is hung. The side sheave 13, the socket rotation shaft 24 (fixing portion) for fixing the end of the rope R to the main body plates 11 and 12 via the rope socket 14, and the rope socket 14 from the socket rotation shaft 24 And a guide 15 (first guide part) for restricting relative movement of the rope R extending toward the machine body side sheave 102 away from the sheave rotation shaft 23 (rotation center axis) of the hook side sheave 13. .

According to this configuration, the guide 15 restricts the movement of the rope R extending from the socket rotation shaft 24 toward the machine body-side sheave 102 via the rope socket 14 in the direction away from the sheave rotation shaft 23. . Thereby, it can suppress that force acts on the rotation axis | shaft 24 for sockets in the direction which makes the hook apparatus 1 incline.
In this case, since the posture of the hook device 1 can be maintained so that the longitudinal direction and the vertical direction of the main body plate 11 are substantially parallel to each other, the hook device 1 is rolled up and appropriately connected to the storage fitting 103. be able to. As a result, breakage of the hook device 1 or the storage fitting 103 and displacement of the stored hook device 1 can be prevented.

(2)
Further, the hook device 1 is a bolt shaft that regulates relative movement of the rope R extending from the socket rotation shaft 24 toward the fuselage-side sheave 102 in a direction approaching the sheave rotation shaft 23 of the hook-side sheave 13. 17 (second guide portion).

  According to this configuration, it is possible to prevent the rope R extending from the socket rotation shaft 24 toward the fuselage-side sheave 102 via the rope socket 14 from moving in a direction approaching the sheave rotation shaft 23. It is possible to reliably regulate the movement of the rope R within a predetermined range.

  In this embodiment, the rope R arranged so as to pass through the region surrounded by the U-shaped plate 54 a and the bolt shaft 17 passes through the gap between the U-shaped plate 54 a and the bolt shaft 17. The bolt shaft 17 and the U-shaped plate 54a are provided so as to be close to each other to the extent that they do not come off. Thereby, the movement of the rope R can be reliably regulated by the U-shaped plate 54 a and the bolt shaft 17.

  Further, the bolt shaft 17 is a bolt shaft for fixing the pair of main body plates 11 and 12, and therefore it is not necessary to separately install a member for restricting the movement of the rope R. Therefore, the hook device 1 can be configured simply.

(3)
Further, the guide 15 (first guide portion) in the hook device 1 has a concave U-shaped surface S (bent surface) bent in a U-shape, and the bottom surface (valley portion) of the U-shaped surface S abuts against the rope R. The movement of the rope R is regulated by contacting.

  According to this configuration, the rope R can be restricted from shifting in the apparatus width direction Z, and the rope R can be stably supported.

  The movement of the rope R is not limited by the U-shaped surface S of the U-shaped plate 54a. For example, a plate bent in a V shape instead of the U-shaped plate 54a is used, and the rope R is formed on the V-shaped surface of the plate. May be restricted.

(4)
The guide 15 (first guide portion) in the hook device 1 is provided on the pair of main body plates 11 and 12 so as to be rotatable around a guide rotation shaft 25 parallel to the sheave rotation shaft 23.
The guide 15 can be fixed to the pair of main body plates 11 and 12 at a guide fixing position (predetermined position) in the rotation direction.

  According to this configuration, the upper portion of the bracket 16 can be widely opened by rotating the guide 15 and moving it to a position different from the guide fixing position. Thereby, the rope socket 14 provided at the end of the rope R can be easily fixed to the main body plates 11 and 12.

(5)
The hook device 1 includes a pair of main body plates 11 and 12 (plate members) provided so as to sandwich the proximal end of the hook 10. Note that the base end of the hook 10 is fixed to the main body plates 11 and 12 via the hook rotation shaft 20.
The guide 15 (first guide portion) at the guide fixing position is provided in a space between the pair of main body plates 11 and 12. The hook sheave 13, the rope socket 14, the bracket 16, the end of the rope R on the hook device 1 side, and the like are also provided in a space between the pair of main body plates 11 and 12.
That is, when viewed from the device width direction Z, the guide 15 at the guide fixing position, the hook-side sheave 13, the rope socket 14, the bracket 16, the end of the rope R on the hook device 1 side, and the like are attached to the main body plates 11 and 12. Covered.

  According to this configuration, the guide 15, the hook-side sheave 13, the rope socket 14, the bracket 16, the end of the rope R on the hook device 1 side, and the like are sandwiched between the pair of main body plates 11, 12. By protruding from the space, it is possible to prevent the hook device 1 from interfering with other members and the like existing around the hook device 1 when the hook device 1 is lifted or retracted. For example, when the rope socket 14 protrudes from the side surface of the main body plates 11 and 12, the rope socket 14 is caught by a suspended load and is damaged, or when the guide 15 protrudes above the main body plates 11 and 12, the storage bracket 103 and the hook device 1 Can be prevented from being interrupted.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made as long as they are described in the claims.

  The present invention can be used as a hook device for raising and lowering a load during crane operation.

1 Hook Device 10 Hooks 11 and 12 Body Plate (Main Body)
13 Hook side sheave 14 Rope socket 17 Bolt shaft (second guide part)
24 Rotating shaft for socket (fixed part)
15 Guide (1st guide part)
101 Boom 102 Airframe side sheave

Claims (5)

In the hook device that is suspended so as to be able to be wound up and down through the airframe side sheave provided on the airframe side,
A main body with a hook fixed thereto;
A hook-side sheave provided on the main body, on which a rope extending from the machine body is hung,
A fixing portion for fixing the end portion of the rope to the main body portion;
A first guide portion for restricting relative movement of the rope extending from the fixed portion toward the fuselage side sheave in a direction away from the center of the hook side sheave;
A hook device comprising: A second guide portion that regulates relative movement of the rope extending from the fixed portion toward the fuselage side sheave in a direction approaching the center of the hook side sheave;
The hook device according to claim 1. The hook device according to claim 1, wherein the first guide portion has a concave bent surface, and a valley portion of the bent surface is brought into contact with the rope to restrict the movement of the rope. The first guide portion is provided in the main body portion so as to be rotatable about an axis parallel to the rotation axis of the hook-side sheave, and is fixed to the main body portion at a predetermined position in the rotation direction. The hook device according to any one of claims 1 to 3. The main body portion is configured to have a pair of plate-like members,
The hook device according to any one of claims 1 to 4, wherein the first guide portion is provided in a space sandwiched between the pair of plate-like members.

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