JPH10299756A - Hook for connecting members - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily mount a hook no members to be connected and make the hook inexpensive and excellent in safety by having a pair of U-shaped locking parts at both the ends and constituting the opening ends so as to be opened and closed by a stopper. SOLUTION: A hook 1 is formed into a front view S-shape as the whole shape by forging working, for instance, and is provided with locking parts 2, 3 at both the ends. The locking parts 2, 3 are U-shaped, have opening ends 2a, 3a on the external sides of the opposed direction and are integrally provided with a pair of triangle plate stopper mounting parts 4 on both the sides of the width direction of the center part of the hook 1. In the holes of these vertex parts, stoppers 6 are rotatably mounted. The stoppers 6 are energized by a spring 9 in the direction that the opening ends 2a, 3a are normally closed with a pin 8 as a shaft. Therefore, the locking parts of both the end parts of the hook 1 can be locked and easily mounted on each of at least two members to be connected. The hook is easily constituted and is made inexpensive, and the disengagment from the locking parts is prevented and safety can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a crane,
The present invention relates to a hanging jig connected to a hoist or the like to lift a load such as a heavy load, and a member connecting hook for connecting at least two members, such as a slinging rope slung on the load to be lifted.

[0002]

2. Description of the Related Art Conventionally, for example, cranes, hoists and the like (hereinafter simply referred to as cranes) have a rotating drum inside, and the rotation of the rotating drum causes
The height of the hook connected to the lower end of the crane wire can be adjusted. The work of lifting the load by the crane is performed by locking the hook at the lower end of the crane wire to the slinging rope (including the wire) slung on the load, rotating the rotating drum, and lifting the hook to lift the load. I have.

However, in this lifting work,
Particularly when the load is heavy, it is necessary to stabilize the posture of the suspended load such as the balance and inclination from the viewpoint of the safety of the cargo handling work, but the work of stabilizing the position of the load is very troublesome. There was an inconvenience.

[0004] That is, it is extremely difficult to determine the exact slinging position of the slinging rope in a single operation. Therefore, the crane is operated, the luggage is slightly lifted, the luggage is checked down, and the luggage is lowered again. It is necessary to repeat the work of adjusting the sling position. Also,
It is difficult to adjust the slinging position easily and accurately only by a person who has a qualification for the slinging operation. For these reasons, the adjusting work of the posture for stabilizing the load becomes very troublesome.

Therefore, the present applicant has proposed a lifting jig which can adjust the posture of a load made of heavy goods or the like while being lifted (see Japanese Patent Application No. 8-65530). As shown in FIG. 7, the hanging jig 40
1, a battery 42 and a motor 43 are mounted. By operating a remote controller (not shown), the motor 43 is operated, and a rotary drum 46 rotatably provided between the side plates 44 and 45 rotates. .

A jig wire 47 is wound around the rotating drum 46 at least once.
The two ends 47a and 47b of the luggage are locked to the slinging rope of the luggage, the luggage is hung via the hanging jig 40 (jig wire 47), and the luggage in the hung state is observed while observing its inclination and the like. By appropriately operating 43, the posture of the load is adjusted.

When using the hanging jig 40,
Side plates 44, 45 having both ends 47a, 47b of jig wire 47 and lifting holes 44a, 45a
A hook is used to connect the two members consisting of the following. For example, a hook 51 as shown in FIG. 8 is used as the hook.

That is, the hook 51 has one end connected to the connecting ring 52.
And a pair of chains 53a and 53b connected to each other, and substantially U-shaped locking hooks 54 and 55 are connected to the other ends of the chains 53a and 53b, respectively. Then, one locking hook 54 is locked to a locking ring 48 at the distal end of the jig wire 47 of the hanging jig 40 as one member, and the other locking hook 55 is attached to the other member, luggage. It is used by being hooked on a slinging rope 49.

[0009]

However, in the hook 51 for the hanging jig, the hook 51 for the hanging jig is connected to the jig wire 47 of the hanging jig 40 and the slinging rope 49 of the load. However, there is a problem that the mounting of the hook 51 is troublesome, the hook 51 itself tends to be expensive, and the safety is inferior. That is, the above-mentioned hanging jig 4
0, if there is a space (clearance) above the rotary drum 46 through which the hook 51 can pass, when the jig wire 47 wound around the rotary drum 46 becomes loose, the jig wire 47 The winding position of 47 is shifted and entanglement easily occurs at the time of reuse.

Therefore, the rotary drum 4 of the hanging jig 40
Since a large space cannot be formed above the jig 6, it is practically difficult to wind the jig wire 47 with the above-described hook 51 attached thereto in advance on the rotary drum 46. Therefore, when using the hanging jig 40, a locking ring 48 or the like is provided at both ends 47 a and 47 b of the jig wire 47 wound in advance on the rotating drum 46, and the hook 51 is attached to the locking ring 48. The locking hooks 54 and 55 are used by being locked respectively.

Therefore, the hooks 54 and 55 of the heavy hook 51 must be locked to the jig wire 47 and the slinging rope 49 by the chains 53a and 53b, respectively.
For example, the jig wire 47 of the hook 51 and the slinging rope 4
9 and the like, the chains 51a, 53b and the like are required for the hook 51, and the hook 51 itself tends to be expensive.

Since the open ends of the substantially U-shaped locking hooks 54 and 55 of the hook 51 are open, the jig wire 47 and the slinging rope 49 can be securely removed from the locking hooks 54 and 55. It is difficult to prevent, and inferior in safety.

To ensure this security, for example, FIG.
It is conceivable to use a hook 56 having a stopper 57 as shown in FIG.
One end of the wire 59 is fixed with a metal fitting 60 or the like, and the other end of the wire 59 must be fixed with a similar hook 56 for use. However, the above problems cannot be solved.

The present invention has been made in view of the above circumstances, and an object of the present invention is to make it possible to easily attach to at least two members to be connected and to make the hook itself inexpensive. Another object of the present invention is to provide a member connecting hook excellent in safety.

[0015]

In order to achieve the above object, according to the present invention, a hook for connecting at least two members to be connected is provided.
It is characterized in that it has a pair of substantially U-shaped locking portions at both ends and that the opening end of the locking portion can be opened and closed by a stopper.

With this configuration, of the pair of hooks of the hook, for example, one of the hooks is locked to one member, and the other is locked to the other member. Thereby, two members are connected by one hook. The hook can be attached independently to the two members with the locking portions provided at both ends thereof, and the hook can be easily attached to the members, and a chain or the like connecting the locking portions is unnecessary. The hook itself can be constructed inexpensively. In addition, since stoppers are provided at the open ends of the hook locking portions, the members once locked are reliably prevented from coming off from the locking portions, and safety is improved.

The invention according to claim 2 is characterized in that the stopper is configured to be able to open and close the open ends of the pair of locking portions independently of each other. With this configuration, the opening ends of the pair of locking portions of the hook can be independently opened and closed by the stoppers. For example, after locking one locking portion to one member, the other locking portion When the stop portion is locked to the other member, the one member is securely prevented from coming off from the one lock portion, and safety is further improved.

According to a third aspect of the present invention, one of the two members is wound around an outer peripheral surface of the rotating drum, a motor operated by power supply from a battery, a rotating drum rotated by the operation of the motor. A jig wire, and a hanging jig capable of adjusting the position of the jig wire by rotating a rotary drum by operating a motor. With such a configuration, a battery, a motor and a hanging jig having a rotating drum around which a jig wire is wound, and two members including, for example, a lifting wire hooked to a sling rope or a crane of luggage, They can be easily connected by one hook having a pair of locking portions.

[0019]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 4 show an embodiment of a member connecting hook according to the present invention. FIG. 1 is a front view, FIG. 2 is a side view, FIG. 3 is a sectional view of a main part, and FIG. FIG.

In FIG. 1 to FIG. 3, the hook 1 is formed in a substantially S-shape in a front view by, for example, forging, and engaging portions 2 and 3 are provided at both ends (upper and lower ends in FIG. 1). Is provided. The locking portions 2, 3 have opening ends 2a, 3a which are formed in a substantially U shape and open outward in the facing direction. A pair of substantially triangular plate-like stopper mounting portions 4 are integrally provided on both sides in the width direction of the center portion of the hook 1, and a hole 5 is formed at the apex of the triangle of the stopper mounting portion 4. A stopper 6 is rotatably attached to the hole 5.

The stopper 6 is formed by bending, for example, a stainless steel material into a substantially U-shaped cross section, and is provided with a pair of disk-shaped bearings 6a at the base end thereof. Each is drilled. The stopper 6 has a bearing 6a located outside the stopper mounting portion 4 of the hook 1 and a pin whose end is inserted through the hole 7 of the bearing 6a and the hole 5 of the stopper mounting portion 4 and caulked. 8
Thereby, it is rotatably mounted on the stopper mounting portion 4.

A spring 9 is fitted on the outer periphery of the pin 8, and one end 9 a of the spring 9 is in contact with the inner surface of the stopper 6 at a substantially central portion in the longitudinal direction, and the other end 9 b is at the center of the hook 1. Abuts the outer surface of the part. This spring spring 9 allows the stopper 6 to rotate around the pin 8
It is constantly urged in a direction to close the open ends 2a, 3a of the locking portions 2, 3. Note that the length of the stopper 6 is set so that the stopper 6 does not protrude outward (in the direction opposite to the arrow A in FIG. 1, B) from the open ends 2 a, 3 a of the locking portions 2, 3.

Next, an example of how to use the hook 1 will be described.
A case where the hanging jig is configured as shown in FIG. 4 will be described. The hanging jig 10 includes a pair of side plates 1.
A rotating drum 13 rotatably arranged between the first and the second 12;
Battery 14 arranged outside side plate 11
And the motor 1 disposed outside the side plate 12
5, gear case 16, relay box 17, and receiver 1
8 and so on.

A jig wire 19 is wound about three times around the arc-shaped outer peripheral surface of the rotary drum 13 of the hanging jig 10, and both end portions 19a and 19b are pulled out downward, and a front end is connected to the end. Each retaining ring 20 is provided. When the hook 1 is used by locking the hanging jig 10, four hooks 1 (referred to as hooks 1a to 1d for convenience of explanation) are prepared.

First, one of the locking portions 2 of the hooks 1a and 1b is locked to locking rings 23 at both lower ends of a lifting wire 22 locked by a crane or the like (not shown). , 1b is engaged with lifting holes 11a, 12a provided on the upper portions of the side plates 11, 12 of the lifting jig 10.

The hook 1 is locked to the locking ring 23 and the lifting holes 11a and 11b by locking the locking ring 23 and the side plate 11 with the stopper 6 on the locking portion 2 side of the hooks 1a and 1b.
This is performed by abutting the upper end of the stopper 12 and pushing the stopper 6 inward against the urging force of the spring 9. After the locking ring 23 and the side plates 11 and 12 are located in the locking portions 2 of the hooks 1a and 1b, the stopper 6 is automatically returned to the original position by the urging force of the spring spring 9, and the locking is performed. The ring 23 and the side plates 11 and 12 are prevented from coming off from the locking portion 2.

The locking ring 23 of the lifting wire 22 and the side plates 11 and 12 of the lifting jig 10 are
a, 1b, the hook 1 is attached to the locking rings 20 at both ends 19a, 19b of the jig wire 19 of the hanging jig 10.
c, one of the locking portions 2 is locked. Thereafter, the other locking portions 3 of the hooks 1c and 1d are respectively locked to the slinging ropes 24 slung on the luggage W. The locking ring 20 of the hooks 1c and 1d and the slinging rope 24
Is also performed in the same manner as the hooks 1a and 1b.

Thus, the four hooks 1a to 1d are attached to the suspending jig 10. In this state, the crane is operated to raise the suspending wire 22 as shown by the arrow C. The load W is lifted to a predetermined height. In this suspended state, a wireless remote controller (not shown) is operated to operate the motor 15 of the suspending jig 10 to rotate the rotating drum 13 in a predetermined direction. By moving 19b as shown by arrow D to change its length, the posture of the suspended load W, such as the inclination, is adjusted.

As described above, according to the hook 1 of the above embodiment, since the locking portions 2 and 3 are provided at both ends of the substantially S-shape, one of the locking portions 2 can be lifted by the wire 22 or the fixing wire 22. The hook 1 can be attached to the hanging jig 10 by locking the other locking portion 3 to the lifting holes 11 a and 12 a of the side plates 11 and 12 and the slinging rope 24.

That is, the lifting wire 22 and the side plates 11 and 12, the jig wire 19 and the slinging rope 2
One hook 1
The hooks 2 and 3 can be individually detached and attached, and the hook 1 can be easily attached to the hanging jig 10, that is, the hook 1 can be easily set on the hanging jig 10 during cargo handling. .

In particular, since the hook 1 itself is formed of one substantially S-shaped part, its weight can be reduced as compared with the conventional hook 51 having the chains 53a and 53b, and the total length can be reduced. Attachment to the hanging jig 10 can be performed more easily, for example, it is possible to shorten the length, and to connect the members to be connected by the hook 1 in a close state.

Therefore, the rotation of the rotary drum 13 causes the hook 1 to be connected to both ends 1 of the jig wire 19.
If the present invention can be applied to the above-described hanging jig 10 that cannot form a large space above the rotating drum 13 or the hanging jig 40 shown in FIG. A great effect can be expected, for example, the work efficiency of the cargo handling work of the luggage W can be greatly improved.

Since the hooks 1 can be integrally formed with the locking portions 2 and 3 and the stopper mounting portion 4 by forging, a wire 59 for connecting the chains 53a and 53b and the hook 56 as in the prior art is used. This makes the hook 1 itself inexpensive. Further, since the hook 1 can be formed smaller than the conventional hook 51 with a chain, the hook 1 can be easily transported and stored.

Further, since stoppers 6 capable of automatically returning are provided at the open ends 2a, 3a of the locking portions 2, 3 of the hook 1, respectively, the lifting wires 22 locked by the locking portions 2, 3, etc. Is securely prevented from coming off, and the hook 1 with high safety can be obtained. In particular, since the stopper 6 for closing the opening ends 2a, 3a of the pair of locking portions 2, 3 can be opened and closed independently, the other locking portion 3 is locked when one locking portion 2 is locked. This prevents the slinging rope 24 and the like locked from being disengaged from coming off, further improving safety and making it easier to attach the hook 1 to the hanging jig 10.

Further, a battery 14 and a motor 15 as a power source are mounted on the suspending jig 10, and the rotating drum 13 is rotated by a remote control, so that a jig wire 19 is provided.
Since the length of both ends 19a and 19b can be adjusted, the hanging jig 10 can be set at a predetermined position where the hook 1 can be easily attached by remote control, and the hanging jig of the hook 1 can be set. The attachment to the tool 10 is further facilitated.

FIGS. 5 and 6 show another embodiment of the member connecting hook according to the present invention. FIG.
Is a side view thereof. The feature of the hook 31 in this embodiment is that the whole shape is formed in the shape of the numeral “3” when viewed from the rear, and the opening ends 32a, 33a of the locking portions 32, 33 are opened in the same width direction. is there. The same parts as those of the hook 1 in the above embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

The hook 31 has locking portions 32 at both ends.
A stopper 36 is rotatably mounted on the stopper mounting portion 34 at the center thereof by the pin 8 or the like in a state where the respective bearing portions 36a are overlapped. This stopper 36 is the same as the stopper 6 of the above embodiment, as shown in FIG.
It rotates independently in the directions of arrows a and b. In this embodiment, the same operation and effect as those of the hook 1 of the above embodiment can be obtained.

In the above embodiment, the stoppers provided at both open ends of the locking portion are configured to operate independently. However, for example, the stoppers provided at both open ends of the locking portion are provided. Integrated, usually closing both open ends,
When one open end is opened, a stopper that operates so as to close the other open end may be used.

Further, in the above embodiment, the case where the hook is used for the hanging jig has been described. However, the present invention is not limited to this. It can be used to connect two members in various cargo handling operations such as connecting a slinging rope, connecting a rope of a crane to another rope, or any field connecting two members such as towing a vehicle Can be used in

Further, in the above embodiment, the case where one member, that is, two members are connected by one hook to the pair of locking portions of the hook has been described.
For example, if a plurality of members are simultaneously locked to each locking portion, 3
It can also be used to connect one or more members. Also,
In the above-described embodiment, the case where the battery, the motor, and the like are mounted on the hanging jig as one member has been described.

Further, the shape of the hook, the shape of the stopper and the mounting position thereof, the structure of the spring spring and the mounting structure thereof in the above embodiment are merely examples, and can be variously changed without departing from the gist of the present invention. Needless to say,

[0042]

As described in detail above, according to the first aspect of the present invention, the locking portions provided at both ends of the hook can be locked to at least two members to be connected. The hook can be easily attached to the member to be connected, the structure can be simplified, an inexpensive hook can be obtained, and the stopper is reliably prevented from coming off from the locking portion. Safety at the time of connection work can be improved.

According to the second aspect of the present invention, when the stopper is independently opened and closed, when the member is locked to the other locking portion, the member locked to one locking portion. Is securely prevented from coming off, and the hook is more easily attached to the member, and the safety is improved.

According to the third aspect of the present invention, the hook can be more easily attached to the member, for example, the hanging jig itself as one member can be remotely controlled and easily set at a predetermined position. I can do it.

[Brief description of the drawings]

FIG. 1 is a front view of a member connecting hook according to the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a sectional view of the main part.

FIG. 4 is an explanatory view showing an example of the state of use of the same.

FIG. 5 is a front view showing another embodiment of the member connecting hook according to the present invention.

FIG. 6 is a side view of the same.

FIG. 7 is a perspective view of a hanging jig that can use the hook according to the present invention.

FIG. 8 is a perspective view showing an example of a conventional hook.

FIG. 9 is a front view showing another example of the conventional hook.

[Explanation of symbols]

1, 31 hooks 2, 3, 32, 33 locking parts 2a, 3a, 32a, 33a opening End 4, 34 ······· Stopper mounting part 6, 36 ······ Stopper 6a, 36a ·········· ... Bearing 8 Pin 9 Spring spring 10, 40 ·································································································································································································································· ······ Rotating drums 14 and 42 ··· Battery 15 and 43 ···· Motors 19 and 47・ ・ ・ ・ ・ ・ ・··· Jig wire 20 ······ Locking ring 22 ······ Lifting wire 23 ····・ ・ ・ Locking ring 24 ・ ・ ・ ・ ・ ・ Ringing rope W ・ ・ ・ ・ ・ ・ ・ ・ ・·Baggage

Claims (3)

[Claims] 1. A hook for connecting at least two members to be connected, wherein the hook has a pair of substantially U-shaped locking portions at both ends, and an open end of the locking portion is opened and closed by a stopper. A member connecting hook, which is configured so as to be able to be connected. 2. The member connecting hook according to claim 1, wherein the stopper is configured to open and close the open ends of the pair of locking portions independently of each other. 3. One of the two members includes a motor operated by power supply from a battery, a rotating drum rotated by the operation of the motor, and a jig wire wound around the outer peripheral surface of the rotating drum. The hook for connecting members according to claim 1 or 2, comprising a hanging jig that has a function of rotating a rotary drum by operation of a motor to adjust a position of a jig wire.