JP2577584Y2 - Engagement device for lifting machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a mechanism for engaging a suspended portion on a lifting machine side with a suspended object when a distribution device or other suspended object mounted on a utility pole is suspended by a lifting machine such as a crane. Related to joint equipment.

[0002]

2. Description of the Related Art In recent years, manipulators have been used in order to save labor in the construction work of distribution lines for attaching distribution equipment such as transformers and segmented switches to utility poles. At this time, conventionally, a wire rope was hung on a hook of a crane, and the wire rope was engaged with the power distribution device to lift the power distribution device. That is, as shown in FIG. 9, for example, a wire rope 2 hooked on a hook 1 of a crane is hooked on a hook 4 welded and fixed to a power distribution device (transformer in the illustrated example) 3, or the like, so that a hanging portion (hook 1 etc.) of the crane is used. ) And the power distribution device 3 were engaged.

[0003]

In the conventional lifting method using the wire rope 2 as described above, there is no particular problem when the work of engaging the wire rope 2 with the power distribution device 3 is performed manually, There are various difficulties in performing this with a manipulator. That is, since the wire rope 2 is not rigid but flexes freely, it is difficult to hang the wire rope 2 on the hook 4 with the manipulator. In addition, since the hook 1 of the crane has directionality when the wire rope 2 is hung and the hook 1 itself rotates freely, the operation by the manipulator is also difficult in this respect. Furthermore, it is also difficult to operate the lock 1a for preventing the hook 1 of the crane from falling with the manipulator.
Another method of engaging the power distribution equipment with the wire rope is to screw an eyebolt into the power distribution equipment and pass the wire rope hung on the hook of the crane through the ring part of the eyebolt. Is almost the same as above.

The present invention has been made to solve the above-mentioned conventional disadvantages, and can be engaged with a suspended object only by a rigid member without using a wire rope, and can be engaged with the suspended object. In addition, there is no directionality, and the locking operation of the engagement with the object to be suspended can be easily and reliably performed, so that the engagement with the object to be suspended can be performed easily, for example, with a manipulator. It is an object of the present invention to provide an engaging device for a hoisting machine that can perform the following.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, an engaging device for a hoisting machine according to the present invention has a hanging rod having a circular engaging plate at a lower end portion and slidably covers the outer periphery of the hanging rod. A hanging fitting having a cylindrical member provided therein, and a fixing fitting which is formed into an inverted cup shape having an engaging space capable of accommodating the engaging plate therein and having an opening at a side portion, and fixed to the object to be lifted. An opening at the side of the fixing bracket has a lower opening for inserting a plate having a width D ₃ (d ₃ <D ₃ ) larger than the outer diameter d ₃ of the engaging plate, and an outer opening of the hanging rod. A width D ₁ (d ₁ <D ₁ <d which is larger than the diameter d _{1 and} smaller than the outer diameter d _{2 of the} cylindrical member.
₂ ) and an inner diameter D ₂ (d _{2) that} is larger than the outer diameter d _{2 of the} cylindrical member and smaller than the outer diameter d ₃ of the engagement plate on the upper surface of the fixture.
A cylindrical member insertion hole having <D ₂ <d ₃ ) is provided.

According to a second aspect of the present invention, in the engagement device of the first aspect, the cylindrical member is constantly urged downward by a spring loosely fitted on the outer periphery of the suspension rod.

[0007]

In the above construction, the lower portion of the suspension rod and the engagement plate at the lower end thereof are connected to the upper opening for rod insertion and the plate at the side of the fixing bracket with the cylindrical member of the suspension fitting raised above the suspension rod. Each is inserted into the internal engagement space from the insertion lower opening. Next, the cylindrical member is lowered along the suspension rod. At this time, the cylindrical member is inserted into the engagement space from the cylindrical member insertion hole on the upper surface of the fixing bracket and rides on the engagement plate.
₂ is greater than the width D ₁ of the rod insertion opening, the cylindrical member is not come off sideways from the opening of the fixing bracket. That is, the suspension rod is prevented from falling off by the cylindrical member. When lifting the lifting rod lifting machine such as a crane, the diameter D ₂ of the cylindrical member insertion hole of the upper surface portion of the fixing bracket is smaller than the outer diameter d ₃ of the engagement plate, the upper surface portion of the engaging plate fixing bracket Engagement is performed, and the fixture and the object to be suspended integrally with the fixture are lifted.

According to the second aspect, when the cylindrical member is raised above the suspension rod, the cylindrical member is lifted against the reaction force of the spring. After inserting the engaging plate at the lower part of the suspension rod and its lower end into the engaging space inside the fixture, when the held cylindrical member is released, the cylindrical member descends by the downward reaction force of the spring, and It is inserted into the engagement space from the cylindrical member insertion hole on the upper surface part, and performs a retaining function. When the object to be lifted is lifted, the cylindrical member is urged downward by a spring, so there is no danger that the cylindrical member will move upward due to an impact or any other cause, and the retaining function is more reliably prevented. Become.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a perspective view of a state in which a power distribution device (transformer in the illustrated example) 12 to be suspended is to be lifted by an engagement device 11 for a lifting machine according to an embodiment of the present invention. The engaging device 11 includes a hanging bracket 14 connected to a wire rope 13 hung on a hook (not shown) of a crane, which is a lifting machine, and a fixing bracket 15 fixed to the suspended object 12 with bolts.

[0010] As shown in FIG.
A suspension rod 17 having an outer diameter d ₁ having a circular engagement plate 16 having an outer diameter d _{3 at} a lower end portion, and a cylindrical member 18 having an outer diameter d ₂ slidably covered on the outer periphery of the suspension rod 17. Has become. At the upper end of the suspension rod 17, a connecting pin 19 is attached to a wire rope 13 hung on a hook (not shown) of the crane.
The connecting part 20 connected via the connector is integrally fixed.

As shown in FIG. 2, the fixing bracket 15 has an inverted cup shape having an engagement space 25 capable of accommodating the engagement plate 16 therein and having an opening 26 at a side portion. A flange portion 27 having a screw insertion hole 27a for fixing the object to be hung 12 with bolts on the outer periphery is provided. The opening 26 has an outer diameter d ₃ of the engagement plate 16.
A plate insertion lower opening 26a having a larger width D ₃ (d ₃ <D ₃ ); and a width D ₁ larger than the outer diameter d ₁ of the suspension rod 17 and smaller than the outer diameter d ₂ of the cylindrical member 18.
(D ₁ <D ₁ <d ₂ ). The upper surface 28 of the fixture 15 has an engagement plate 1 larger than the outer diameter d ₂ of the cylindrical member 18.
Outer diameter d ₃ smaller inner diameter D ₂ than the _{6 (d 2 <D 2 <} d
A cylindrical member insertion hole 28a having ₃ ) is provided.
The magnitude relationship between the dimensions of the above-described parts can be expressed as follows. d ₁ <D ₁ <d ₂ <D ₂ <d ₃ <D ₃

Next, when the object to be hoisted 12 is lifted by the engaging device 11, the hanging metal 14 and the fixing metal 1 are used.
The engagement operation for engaging with No. 5 will be described. First, as shown in FIG. 4, in a state where the cylindrical member 18 of the suspension fitting 14 is raised above the suspension rod 17, the lower part of the suspension rod 17 and the engagement plate 16 at the lower end thereof are fixed to the fixture 15.
Are inserted laterally into the internal engagement space 25 from the upper opening 26b for inserting the rod and the lower opening 26a for inserting the plate on the side of the side. Then, as shown in FIG.
When the suspension rod 17 is lifted, the diameter D ₂ of the cylindrical member insertion hole 28 a in the upper surface 28 of the fixing bracket 15 becomes equal to the engagement plate 1.
6 is smaller than the outer diameter d ₃ , the engagement plate 16 is engaged with the upper surface portion 28 of the fixture 15. Next, as shown in FIG. 6, is lowered along the rod 17 hanging cylindrical member 18, since the outer diameter d ₂ of the cylindrical member 18 is larger than the width D ₁ of the rod insertion opening 26b, the cylindrical member 18 It does not come out from the opening 26 of the fixing bracket 15 sideways. That is, the suspension rod 17 is prevented from falling off by the cylindrical member 18, and the suspension bracket 14 and the fixing bracket 15 are locked. Next, when the suspension rod 17 is lifted by the wire rope 13 of the crane, the fixture 1 is connected via the suspension 14.
5 and the to-be-lifted object 12 integrated therewith are lifted. The timing of locking the cylindrical member 18 by lowering it may be performed at a stage where the engagement plate 16 is below as shown in FIG.

According to the above-described engaging device 11, the object to be suspended 12 is not hung with a wire rope,
4 and the fixture 15 are all made of rigid members, so that it is easy to operate with a manipulator. Since the wire rope 13 to be hung on the hook of the crane simply suspends the hanging metal fitting 14 vertically, it does not hinder the operability of the manipulator. In addition, since the hanging metal 14 itself has no directionality in engaging it with the fixing metal 15, it is easy to perform the engaging operation with the manipulator also in this regard. Note that the directionality of the suspension fitting 14 with respect to the fixing fitting 15 (direction of the opening 26) does not particularly hinder the operation of the manipulator.

FIGS. 7 and 8 show another embodiment. In this embodiment, a spring 30 for constantly urging the cylindrical member 18 downward is loosely fitted on the outer periphery of the suspension rod 17.

In the engagement device having the spring 30 as described above, when raising the cylindrical member 18 above the suspension rod 17,
As shown in FIG. 7, the cylindrical member 18 is lifted up against the reaction force of the spring 30. After the lower portion of the suspension rod 17 and the engagement plate 16 are inserted into the fixing bracket 15 and the held cylindrical member 18 is released, as shown in FIG.
8 is lowered by the downward reaction force of the spring 30, and is inserted into the engagement space from the cylindrical member insertion hole 28a of the upper surface 28 of the fixing bracket 15, and acts as a stopper. In this state, the object 12 is lifted. In this state, the cylindrical member 18 is lifted.
Is constantly urged downward by the spring 30, there is no possibility that the cylindrical member 18 will move upward due to an impact or some other factor, and the action of retaining the cylinder member 18 is further ensured.

The engagement device according to the present invention can be applied not only to the manipulator but also to the case where the operation is performed by a robot, and can also be applied to the case where the engagement operation is performed manually. The present invention can also be applied to a case of lifting with a lifting machine other than a crane. The object to be lifted by the engagement device of the present invention is not limited to the power distribution device, but may be any.

[0017]

[Effects of the Invention] According to the present invention, the engagement between the hanging bracket and the fixing bracket, that is, the engagement between the hanging bracket and the object to be suspended,
Since all the operations are performed using only a rigid member without using a wire rope, this engagement operation can be easily performed using a manipulator.

On the side of the hanging fitting connected to the lifting machine, the object to be suspended is engaged (directly engaged with the fixing fitting).
Since there is no directionality in performing the engagement, it is easy to perform the engagement operation with the manipulator also in this point.

Furthermore, the operation of locking and unlocking the engagement between the hanging bracket and the object to be hung is as simple as lowering the cylindrical member by its own weight or simply sliding it upward, and this locking operation is also easy with the manipulator. Can be done. Further, since the locked state is maintained in a state of being lowered by its own weight, stable and reliable locking is performed.

According to the second aspect of the present invention, when the object to be suspended is lifted, the cylindrical member having the retaining action is constantly urged downward by the spring. There is no danger of movement, and the action of retaining is further ensured.

[Brief description of the drawings]

FIG. 1 is an engagement device for a lifting machine according to an embodiment of the present invention;
It is a perspective view which shows the to-be-lifted thing which is going to be lifted by this.

FIG. 2 shows only a fixing bracket of the engaging device, wherein FIG. 2A is a plan view of the fixing bracket, FIG.
FIG. 3C is a bottom view of the same.

FIG. 3 is a front view showing only a hanging bracket of the engagement device.

FIG. 4 is a front view showing the operating procedure of the engaging device, showing a stage in which a lower portion of a suspending rod of a suspending fitting and an engaging plate at a lower end thereof are inserted into a fixing fitting.

FIG. 5 is a front view showing an operation procedure of the engaging device, showing a step of pulling up a suspension rod and engaging an engaging plate with a fixing bracket.

FIG. 6 is a front view showing an operation procedure of the engagement device, showing a step of lowering a cylindrical member along a suspension rod to engage a suspension fitting and a fixing fitting.

FIG. 7 shows another embodiment of the engagement device of the present invention.
FIG. 8 is a front view showing an operation procedure of the engagement device, and is a diagram showing a stage in which the suspension rod is pulled up to engage the engagement plate with the fixing bracket.

FIG. 8 is a front view showing an operation procedure of the engagement device of FIG. 8, showing a stage in which a cylindrical member is lowered along a suspension rod to engage a suspension bracket and a fixing bracket.

FIG. 9 is a perspective view illustrating a conventional power distribution equipment lifting method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Engagement device 12 Object to be lifted 14 Hanging fitting 15 Fixing fixture 16 Engagement plate 17 Suspension rod 18 Cylindrical member 20 Connecting device 25 Engagement space 26 Opening 26a Plate insertion lower opening 26b Rod insertion upper opening 28 Top surface 28a cylindrical member insertion hole 30 spring

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Atsuo Uchiyama 2-4-1, Nishi-Atsujigaoka, Chofu-shi, Tokyo Tokyo Electric Power Company R & D Laboratory (56) References Japanese Utility Model 1986-95778 (JP, U) (Japanese) Shokai Sho 61-185775 (JP, U) Shokai Sho 61-1446547 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) B66C 1/66

Claims (2)

(57) [Scope of request for utility model registration] 1. A hanging bracket having a hanging rod (17) having a circular engaging plate (16) at a lower end and a cylindrical member (18) slidably mounted on the outer periphery of the hanging rod (17). (14) and the engaging plate (16) inside
A fixing bracket (15) fixed to the object to be lifted (12), having an inverted cup shape having an engagement space (25) capable of accommodating the object and having an opening (26) on the side. bracket (15) opening (26) of the side of the engaging plate greater width D ₃ than the outer diameter d ₃ of (16) (d
₃ <D ₃ ) Lower opening for plate insertion (26a)
And a width D ₁ (d larger than the outer diameter d ₁ of the suspension rod (17) and smaller than the outer diameter d ₂ of the cylindrical member (18).
₁ <D ₁ <d ₂ ) upper opening (26) for rod insertion
b) and the upper surface (2) of the fixing bracket (15).
8) to the cylindrical member (18 the engagement larger than the outer diameter d ₂ of) engagement plate (16 smaller inner diameter D ₂ than the outer diameter d ₃ of)
(D ₂ <D ₂ <d ₃ ) cylindrical member insertion hole (28
a) an engaging device for a hoisting machine, wherein a) is provided. 2. A lifting machine according to claim 1, wherein said cylindrical member is always urged downward by a spring loosely fitted on an outer periphery of said lifting rod. For engaging devices.