JPH0441389A - Chuck suspension device - Google Patents

Abstract

PURPOSE:To prevent a malfunction in suspending a work by suspending the work by automatic chucking by action of an alternating installing/removing mechanism, and lowering the work to a predetermined position by automatic chuck releasing by action of the alternating installing/removing mechanism. CONSTITUTION:When a suspension body 8 is suspended, a catching lever 10 operates to open the interval for a chuck arm 2, a pair of inner chuck pawls 4 chuck a work W for the inner surface, and after the inner chuck, the suspension body cannot be more apart from a suspension frame 1 relatively, so the suspension force for the suspension body 8 acts as the chucking force to suspend the work W. When the work W is then lowered to predetermined position, the suspension body 8 gets closer to the suspension frame 1 relatively, the catching lever 10 operates to decrease the interval between the chuck arms 2, and the inner chuck pawls 4 release inner chuck for the work W. A malfunction can thus be prevented.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to a chuck lifting device having an alternating vertical chuck function, and more specifically, a chuck lifting device with a pair of chucks in an open or closed state. When placed on top of an object and attempting to lift it again, the alternating attachment/detachment mechanism automatically chucks the object on the inside or outside, allowing the object to be lifted.
This invention relates to a chuck lifting device having an alternating lifting and lowering chuck function in which the chuck is automatically released by the action of an alternating attachment and detachment mechanism when the object to be lifted is subsequently suspended to a predetermined position.

[Prior Art] Examples of conventional chuck lifting devices having an alternating lifting and lowering chuck function include Japanese Utility Model Publication No. 16935/1982 and Publication No. 6462/1989.

[Problem II to be Solved by the Invention] The above-mentioned conventional chuck lifting device having an alternating lifting and lowering chuck function is not safe because malfunctions may occur in the alternating attaching/detaching mechanism when vibration is applied or diagonal lifting is performed. I was worried about sex.

SUMMARY OF THE INVENTION An object of the present invention is to provide a chuck lifting device equipped with an alternating attachment/detachment mechanism that does not cause malfunctions.

[Means for Solving the Problems] According to the first invention of the present application, as means for solving the above problems, horizontal guides la, la for chuck arms are provided on both sides in the horizontal direction.
a lifting frame 1 having a desired shape, a pair of chuck arms 2.2 provided on each of the chuck arm horizontal guides la, la so as to be slidable in the horizontal direction; A contact arm 3 provided from the lifting frame l and abutting on the upper surface of the object to be lifted W so as to be located at a required upper position, and an abutting arm 3 provided from each chuck arm 2. a pair of inner chuck claws 4.4 positioned so as to face the opposing inner surface of the object to be lifted W when abutting on the upper surface of the object W; a lifting guide 5 provided from the lifting frame 1; A slide body 6 is engaged and guided by the lifting guide 5, and a slide body 6 is provided to connect the slide body 6 and each chuck arm 2. A pair of swinging links 7.7 transmitting the movement of the pair of chuck arms 2, 2 toward and away from each other, and are provided in an upper part corresponding to the center of the lifting frame l so as to be integrated with the slide body 6, as appropriate. A required lifted object 8 to be lifted by a lifting machine, a fixed cam 9 having a required vertical circulation path-shaped cam groove 9a, and a hook having a foot portion 10a guided by the cam groove 9a are made of a rod 10. It is an alternating attachment/detachment mechanism, and is provided to be distributed between the lifted object 8 and the lifting frame 1, and when the lifted object 8 is relatively separated from the lifting frame 1 after coming into contact with it, the hook is removed. When the hook portion 10a of the rod 10 is hooked in the middle of the vertical circulation path-like cam groove 9a of the fixed cam 9, and subsequently, the hook portion 10a of the rod 10 is separated from the other after coming into contact with each other with a certain dimension, the hook portion 10a of the rod 10 is hooked to the hook of the rod 10. To provide a chuck lifting device characterized in that the part 10a is equipped with an alternating attachment/detachment mechanism in which the portion 10a is released from the midway of the circulating path-like cam groove 9a of the fixed cam 9. It is.

According to the present second invention, as a means for solving the above problems.

Horizontal guides la and la for chuck arms on both sides in the horizontal direction
a lifting frame l having a desired shape, a pair of chuck arms 2.2 provided on each of the chuck arm horizontal guides la, la so as to be slidable in the horizontal direction; A mounting arm 11 provided from the lifting frame 1 and placed on the upper surface of the object to be lifted W so as to be located at a required downward position; A pair of external chuck claws 12 that are positioned so as to face opposite outer surfaces of the lifted object W when placed on the upper surface of the object W, a lifting guide 5 provided from the lifting frame l, and the lifting guide. 5, and the slide body 6 and each of the chuck arms 2
a pair of swing links 7.7 which are provided to connect the two chuck arms 2.2 and transmit the movement of the slide body 6 towards and away from the lifting frame l as the movement away and away from the pair of chuck arms 2.2; , a required lifted object 8 which is provided in an upper part corresponding to the central part of the lifting frame l so as to be integrated with the slide body 6 and is lifted by an appropriate lifting machine, and a required vertical circulation path-shaped cam groove 9a. A fixed cam 9 having a cam groove 9 and a hook having a hook portion 10a guided by the cam groove 9a are an alternating attachment/detachment mechanism consisting of a rod 1O, and are provided distributed between the lifted object 8 and the lifting frame 1, When the lifted object 8 is relatively separated from the lifting frame 1 after coming into contact with it, the hook portion 10a of the rod 1O is hooked to the midway of the vertical circulation path-like cam groove 9a of the fixed cam 9. When the hook portion 10a of the rod lO is released from the midway of the circulation path-like cam groove 9a of the fixed cam 9, when This invention provides a chuck lifting device characterized in that it is equipped with an alternating type attachment and detachment mechanism consisting of.

[Effect] First, the first invention of the present application will be explained in detail.

When the object 8 to be lifted is lifted by a lifting machine with the joint part 10a of the rod 10 being caught in the middle of the circulation path-like cam groove 9a of the fixed cam 9, the object 8 to be lifted will be attached to the lifting frame l. , the inner chuck pawls 4.4 remain closely spaced. When the chuck lifting device is moved to a desired position and comes into contact with the top surface of the object W to be lifted, the contact arm 3 comes into contact with the top surface of the object W to be lifted, and therefore the lifting frame l is placed on the object W to be lifted. At the same time, the pair of inner chuck claws 4, 4 are placed on the object W to be lifted.
facing the opposing inner surface of.

After that, the lifted object 8 provided integrally with the slide body 6
continues to descend due to its own weight. In this way, the lifted object 8
When the hook relatively approaches the lifting frame l, the hook portion 10a of the rod 10 is attached to the vertical circulation path cam #ll of the fixed cam 9.
It passes through the middle of 9a and is unlatched from the middle.

Subsequently, when the lifted object 8 is lifted extremely slowly by the lifting machine, the hook part 10a of the rod 1o is not hooked into the vertical circulation path-like cam groove 9a of the fixed cam 9, and the hook is not hooked into the vertical circulation path-like cam. As a result, the lifted object 8 is initially lifted so as to be separated from the lifting frame l, and in the lifting process, the pair of swing links 7.7 move against the slide body 6. The chuck arm 2.2 is swung by and stretched against the chuck arm 2, and the gap between the chuck arms 2.2 and 2.2 is increased, and the pair of inner chuck claws 4, 4 chuck the object W to be lifted on the inner surface. After this has been carried out, the object to be lifted 8 cannot be separated from the lifting frame l by a large distance for one year, and the force to lift the object to be lifted 8 acts as a chucking force to lift the object W to be lifted. increase.

When the object W to be lifted is subsequently suspended to a predetermined position, the object 8 to be lifted comes relatively close to the lifting frame 1, and in the process of relative approach, the hook is attached to the hook portion 10 of the rod 10.
a enters halfway into the vertical circulation path-like cam groove 9a of the fixed cam 9, and the pair of swinging links 7.7 move into the slide body 6.
The chuck arms 2.2 are swung in the opposite direction to the above and pulled against the pair of chuck arms 2.2, thereby narrowing the distance between the chuck arms 2.2 and the inner chuck claws 4.4.
will release the inner chuck of the object W to be lifted.

Subsequently, when the lifted object 8 is lifted again by the lifting machine, the hook portion 10a of the rod 10 is hooked in the middle of the vertical circulation path-shaped cam groove 9a of the fixed cam 9. , the lifted object 8 is maintained relatively close to the lifting frame l, and therefore the inner surface char 2 and the claws 4, 4
are maintained close together and the chuck lifting device is lifted.

Next, the second invention of the present application will be explained in detail.

When the object 8 to be lifted is lifted by a lifting machine with the hook part 10a of the rod 10 being caught in the middle of the vertical circulation path-like cam groove 9a of the fixed cam 9, the object 8 to be lifted will be attached to the lifting frame 1. remain relatively close to each other, and the external chucks 12.12 are maintained at a wide spacing. When the chuck lifting device is moved to a desired position and placed on the object W to be lifted, the loading arm 11 is placed on the upper surface of the object W to be lifted, and therefore the lifting frame l is placed on the object W to be lifted. While being placed, a pair of outer chuck claws 12.12 face opposite outer surfaces of the object W to be lifted.

After the mounting arm 11 comes into contact with the upper surface of the lifted object W,
The lifted object 8, which is provided integrally with the slide body 6, continues to descend under its own weight. In this way, when the lifted object 8 relatively approaches the lifting frame l, the hook portion 10a of the rod lO passes through the midway of the vertical circulation path-shaped cam groove 9a of the fixed cam 9 and is unlatched from the midway. .

Subsequently, when the lifted object 8 is lifted extremely slowly by the lifting machine, the hook portion 10a of the rod 10 is not hooked to the vertical circulation path-like cam groove 9a of the fixed cam 9, and the vertical circulation path-like cam is suspended. As a result, the lifted object 8 is initially lifted so as to be separated from the lifting frame 1, and in the lifting process, the pair of swing links 7.7 move against the slide body 6. is swung by and pulled against the chuck arm 2.

The chuck arm 2.2 narrows the gap, and the pair of external chuck claws 12.12 externally chucks the object W to be lifted. After the external chuck is performed, the object 8 to be lifted is attached to the lifting frame. 1, the object to be lifted 8 is lifted, and the lifting force acts as a chucking force to lift the object W to be lifted.

Subsequently, when the object to be lifted W is suspended to a predetermined position, the object to be lifted 8 comes relatively close to the lifting frame l,
In the process of relative approach, the hook is the hook part 1 of the rod 10.
0a enters halfway into the vertical circulation path-like cam groove 9a of the fixed cam 9, and the pair of swinging links 7.7 are swung by the slide body 6 in the opposite direction to the above, and are attached to the pair of chuck arms 2.2. The chuck arm 2.2 expands the gap between the pair of outer chuck jaws 1.
2.12 releases the outer chuck of the object W to be lifted.

Subsequently, when the lifted object 8 is lifted again by the lifting machine, the hook is in a state in which the two-legged part 10a of the rod 10 is hooked in the middle of the vertical circulation path-shaped cam groove 9a of the fixed cam 9. As a result, the object to be lifted 8 is maintained relatively close to the lifting frame l, and therefore the outer chuck claws 12.
12 are kept spaced apart and the chuck lifting device is lifted.

[Embodiment] Figures 1 to 6 (a) and (h) show a first embodiment of the chuck lifting device of the first invention of the present application.

First, the configuration will be explained with reference to FIG.

Reference numeral 1 indicates a lifting frame made of a square steel pipe of the required length with a horizontal pipe axis. The inner surface of the lifting frame l is used as horizontal guides la, la for chuck arms, and a pair of chuck arms 2, 2 of a telescopic structure consisting of an outer tube 2a and an inner tube 2b are provided inside from both ends of the lifting frame l. It is inserted so that it can slide freely. At the center of the upper surface of the lifting frame l, a lifting guide 5 made of a square steel pipe of the required length with a perpendicular pipe axis is provided.
is fixed upright, and a casing-shaped lifted object 8 is slidably fitted into the lifting guide 5 from above. The lifted object 8 integrally has a lifted ring 8a on its upper surface. A pair of side surfaces of the lifted object 8 are connected to a slide body 6 that extends to a required downward position across the lifting frame l.
It is said that

On the upper surface of the lifting frame 1, contact arms 3, 3 made of thick-walled steel plates are erected in a closed state with a lifting guide 5 in between. The corresponding contact arms 3, 3 have a substantially dogleg-shaped arm main body 3a whose base end is erected and fixed on the upper surface of the lifting frame 1, extends upward from the base end, and then further extends horizontally; It consists of an auxiliary arm 3b which is fastened to the horizontal part of the arm main body 3a by a port 3C and whose extension length is adjusted according to the size of the object W to be lifted. At the projecting end of the inner tube 2b,
A chuck attachment portion 2C provided with a female thread is fixedly provided, and a threaded portion of a fork end 2d is screwed thereto, and an inner chuck claw 4.4 is pivotally attached to the fork end 2d. The inner chuck claw 4 includes a chuck claw portion 4a shaped to correspond to the shape of a pair of opposing inner surfaces of the object W to be chucked, and a chuck claw portion 4a that is closer to the center of the device as it goes toward the lower end side of the chuck claw portion 4a. It has a guide part 4b hanging down from the oblique opening. The outer tube 2a and the inner tube 2b are
Pin through holes 2e are arranged at equal pitches.

2ee... is drilled so that the left and right sides are symmetrical,
The outer tube 2a is pulled out as required from the lifting frame 1, and the inner tube 2b is pulled out as required from the outer tube 2a, and the appropriate pin through hole 2e of the outer tube 2a and the appropriate pin through hole 2 of the inner tube 2b
e is matched and an appropriate pin 2f is passed through, and the pin 2f
The upper ends of two sets of swing links 7 are pivotally connected to both ends of the swing links 7, and the lower ends of the two sets of swing links 7 are pivoted to the lower parts of the two slide bodies 6.

Therefore, when the object W to be lifted is large, the arm main body 3a
The auxiliary arm 3b fixed on the horizontal part of the object to be lifted W
By adjusting the inner tube 2b so that it rests on the upper surface of the inner tube 2b, and adjusting the inner tube 2b so that it extends as required from the outer tube 2a, a large object W to be lifted can be lifted with a chuck. This chuck lifting device can lift a pair of inner chuck claws 4.4 by appropriately selecting the pin through holes 2e of the outer tube 2a and the inner tube 2b.
The chuck release dimension of the chuck can be made larger, for example, by about 30 mm than the chuck dimension of the object W to be lifted, and when placing the chuck lifting device on the object W to be lifted,
Guided by the guide portion 4b, the pair of inner chuck claws 4 smoothly enter the inner space of the object W to be lifted.

The interior of the lifting guide 5 and the lifted object 8 is a closed space, and within the closed space, a hook having a hook portion 10a is connected to a rod 10, and an vertical circulation system shown in FIGS. 6(a) and 6(b) is installed. An alternating attachment/detachment mechanism is provided which includes a fixed cam 9 having a path-like cam groove 9a. The fixed cam 9 is fixed to the inner surface of the lifting guide 5, and the hook 10 is provided from the inner surface of the lifted object 8.

Note that the hook may be such that the rod lO is fixed to the inner surface of the lifting guide 5, and the fixed cam 9 is provided from the inner surface of the lifted object 8.

The vertical circulation path-like cam groove 9a of the fixed cam 9 is hooked on the rod lO.
It has a cam groove inlet 90 into which the hook portion 10a enters, and a cam groove outlet 91 through which the hook portion 10a exits at the upper end, and has the required shape to go around the island-shaped raised portion 33. In this embodiment, the cam groove inlet 80 and the cam groove outlet 81 are vertically overlapped on the right side of the drawing, so the cam groove outlet 81 is separated from the cam groove inlet 80 by a high step. The midway lower part of the vertical circulation path-like cam groove 9a has a cam ratio, and in order from the inlet side, a first curved oil passage portion 84 that is convex downward and a second curved passage that is convex upward. 95 and a third bending passage part 8B that is convex downward in a continuous bending shape, from the cam groove entrance 80 to the first bending passage part 84.
The entry passage portion 87 leading to the cam groove is inclined downward to the left, and the exit passage portion 88 from the third bent passage portion 8B to the cam groove outlet 81 has no step at the lower end, and the groove bottom surface becomes shallower as it goes upward. The cam groove outlet 91
It ends with a step between the cam groove inlet 80 and the cam groove inlet 80.

Alternatively, one piece of the hinge may be fixed to the right inner surface of the lifting guide 5 without raising the exit passage portion 88, and the other piece of the hinge may close the cam groove outlet 81 like a check valve.

The lifting rod 10 has a short hook portion 10a curved in the required horizontal direction that can engage with the vertical circulation path-like cam groove 9a of the fixed cam 9 from the lower end thereof, and has a leaf spring 10b in the middle. The upper part of the rod is pivotally connected by a pivot pin 14 to a rotating bracket 13 which is pivotally connected to the side surface of the lifted object 8, and the upper end is pressed leftward by a pressing pin 16 biased by a spring 15. There is.

Therefore, in the alternating attachment/detachment mechanism, when the lifted object 8 is separated from the lifting frame 1, the hook portion 10a
is apart above the fixed cam 9 and comes into contact with the right inner surface of the lifting guide 5, and when the lifted object 8 moves relatively close to the lifting frame l, the hook portion 10a is connected to the vertical circulation path of the fixed cam 9. from the cam groove entrance 80 of the shaped cam groove 9a, passes through the entry passage portion 87, reaches the first bent passage portion θ4, and stops;
Subsequently, when the lifted object 8 moves away from the lifting frame l, the tool 2 part 10a moves into the second bending passage part 85.
When the lifted object 8 then moves relatively close to the lifting frame l, the hook portion 10a reaches the third bent passage portion 96 and stops, and then the lifted object 8 moves closer to the lifting frame l. 1, the hook portion 10a reaches the exit passage portion 8B and stops at its original position above and away from the fixed cam 9.

In short, in the alternating attachment/detachment mechanism, when the object 8 to be lifted is moved toward and away from the lifting frame 1, the hook portion 10a of the rod 10 is connected to the vertical circulation path-shaped cam groove of the fixed cam 9. When 9a is hooked in the middle and then moved closer and closer to each other by a certain distance, the hook is attached to the rod lO.
The hook portion 10a of the fixed cam 9 is connected to the vertical circulation path cam @
The latching with the middle part of 9a is released.

Next, the operation of the chuck lifting device having the above configuration will be explained below.

First, the lengths of the contact arm 3 and the chuck arm 2 are adjusted according to the size of the object W to be lifted, and then, as shown in FIG. The object 8 to be lifted is lifted by a lifting machine while being latched to the second bending passage portion 95. In this state, the inner chuck claws 4, 4 are maintained at a narrow interval.

Next, the chuck lifting device is moved to a position directly above the lifted object W to be lifted and transported and lowered.

Then, as shown in FIG. 2, the contact arm 3 comes into contact with the upper surface of the object W to be lifted, the pair of inner chuck claws 4, 4 face the opposing inner surfaces of the object W, and then the object W is lifted. 8
lowers due to its own weight, and the lifted object 8 reaches the lifting frame l.
The hook portion 10a approaches the third bending passage portion 8B.
Located in

Next, when the lifted object 8 is lifted very slowly by the lifting machine, the hook part 10a passes through the exit passage section 38 and leaves above the fixed cam 9, and the lifted object 8 is lifted up. The chuck arm 2.2 is lifted so as to be spaced apart from the frame l, and the gap between the chuck arms 2.2 and 2 is increased, and the pair of inner chuck claws 4, 4 internally chuck the object W to be lifted, so that the object W to be lifted can be lifted. can.

Subsequently, when the object W to be lifted is suspended to a predetermined position, the object 8 to be lifted relatively approaches the lifting frame 1, and the hook portion 10a passes through the entry passage portion 97 and bends into the first bend. Located in the passage portion 84, the chuck 7-m 2.2 narrows the interval by the swinging of the swing link 7.7, and the inner chuck claw 4.4 releases the inner chuck of the object W to be lifted.

Subsequently, when the lifted object 8 is lifted again by the lifting machine, the hook part 10a is hooked to the second bending passage section 85, and the lifted object 8 is attached to the lifting frame l, as shown in FIG. The inner chuck jaws 4.4 remain relatively close together, so that the chuck lifting device is lifted with the object W placed thereon.

7 and 8 show a second embodiment of the chuck lifting device of the first invention of the present application.

As can be seen from FIG. 7, the char 7 lifting device of this embodiment has no difference from the first embodiment described above except for the alternating type attachment and detachment mechanism. 8th
Fixed cam 9 fixed to the inner surface of the lifting guide 5 shown in the figure
The hook provided from the inner surface of the lifted object 8 is the rod 10.
have.

The lifting rod 10 has a leaf spring 10b in the middle and a leaf spring lOb in the middle, and hangs vertically in the upper position where it does not engage with the fixed cam 9, and when it engages with the fixed cam 9. When the leaf spring lOb is bent, the hook portion 10a at the lower end is displaced from side to side and guided within the vertical circulation path-shaped cam groove 9a of the fixed cam 9.

The vertical circulation path-like cam groove 9a of the fixed cam 9 has a cam groove entrance 90 with a large frontage and located in the center, and a cam groove entrance 8.
It has a cam groove outlet 91 arranged in parallel on the right side of 0, and has a desired shape surrounding an island-like protrusion 83 having a desired shape. The lower part of the vertical circulation path-like cam groove 9a is
In order from the cam groove entrance side, a first curved passage portion 94 that is convex downward, a second curved passage portion 85 that is convexed upward, and a third curved passage portion 8B that is convex downward are formed into a continuous curved shape. have,
An entry passage portion 87 extending from the cam groove entrance 80 to the first bent passage portion 84 is inclined downward to the left. The first bent passage portion 84, the second bent passage portion 85, and the third bent passage portion 3B are located on the right side with respect to the hook portion 10a of the lifting rod 10, which is located at an upper position where it does not engage with the fixed cam 9. By doing so, the hook portion 10a can move in circulation within the vertical circulation path-shaped cam groove 9a by alternately engaging and moving.

In the alternating attachment/detachment mechanism of this embodiment as well, the rod 10 of the hook is fixed to the inner surface of the elevating guide 5, and the fixed cam 9
may be provided from the inner surface of the lifted object 8.

FIG. 9 shows a third embodiment of the chuck lifting device of the first invention of the present application.

The lifting frame l is formed by inserting and fitting a block into the center of a square steel pipe, and the outer surface of the square steel pipe serves as horizontal guides la, la for chuck arms. Chuck arm 2,
2 is provided with upper and lower extending surface chucks 4.

A vertically adjustable abutting arm 3 is provided at the end of the chuck arm horizontal guides la, la. In this embodiment, the contact arm 3 may be omitted and the ends of the chuck arm horizontal guides la, la may be used instead.

A lifting guide 5 consisting of two rods is suspended from the lifting frame 1 below the lifting frame 1, and a slide body 6 is fitted onto the lifting guide 5. Also, on the upper side of the lifting frame 1, A fixed cam mounting cylindrical guide 17 is provided, and a cap-shaped lifted object 8 is slidably fitted into the fixed cam mounting cylindrical guide 17, and the lifted object 8 and the slide body 6 are lifted. It is connected by a long pulling rod 18 that is slidably inserted into the frame l. An alternating attachment/detachment mechanism consisting of the same fixed cam 9 and lifting rod 10 as shown in FIG. 1 is provided in the internal space of the lifted object 8 and the fixed cam mounting cylindrical guide 17.

FIG. 1θ shows a first embodiment of the chuck lifting device of the second invention of the present application.

This embodiment differs from the chuck lifting device of the first embodiment of the first invention of the present application in FIG.
The pair of swinging links 7.7 have different coverage forces, the outer chuck claws 12°12 instead of the inner chuck claws, and the mounting arm 11 instead of the abutment arm 3, and the pair of swinging links 7.7 are different.
Is it a chuck arm consisting of an outer tube 2a and an inner tube 2b? ,2
and a slide body 6 on the upper side of the lifting frame 1, and the movement of the slide body 6 toward and away from the lifting frame 1 is transmitted as the separation and approach movement of the pair of chuck arms 2, 2. , the external chuck claws 12.12 externally chuck the object W to be lifted, and the object W is lifted.

The function is the same as that of the inner chuck type of the first invention in that the chuck and the chuck are released when the lifted object 8 is alternately lifted and hung. The lifting frame 1 is formed by fitting and fixing a block to a square steel pipe. The slide body 6 and the lifted body 8 are integrally formed, and the mounting arm 11 is fixed to the lower surface of a block that constitutes the lifting frame 1.

The structure and operation of the external chuck type chuck lifting device of this embodiment have been described in [Means for Accomplishing the Problems] and [Operation], so they will not be explained any further and will be the same. Just add the sign.

FIG. 11 shows a second embodiment of the chuck lifting device of the second invention of the present application.

This embodiment is also an external chuck type chuck lifting device. The lifting frame l and the chuck arm 2.2 are substantially the same as in FIG. The mounting arm 11 is provided in the shape of a small flat plate.

It is placed on the upper surface of the lifted object W, which is not hollow.

The swinging link 7 has a dogleg shape, so that the movement of the slide body 6 towards and away from the lifting frame 1 is transmitted as the movement away and away from the pair of chuck arms 2.2, so that the outer surface Chuck jaw 12.1
2 externally chucks the object W to be lifted and lifts it.

[Effects of the Invention] As explained above, according to the chuck lifting device of the first invention of the present application, a pair of chucks is lifted with the open or closed state, placed on the object to be lifted, and then lifted again. When attempting to do so, the alternating attachment/detachment mechanism automatically chucks the object to be lifted, allowing the object to be lifted. The chuck is automatically released due to the action of the alternating type attachment/detachment mechanism, and especially when compared with conventional technology, the alternating type attachment/detachment mechanism does not malfunction even when vibration is applied or the lifting device is tilted. The safety required for this is absolutely ensured.

Further, according to the chuck lifting device of the second invention of the present application, when a pair of chucks is lifted in an open or closed state and placed on an object to be lifted, and the object is to be lifted again, the alternating attachment/detachment mechanism works. The external char 2 is automatically applied to the object to be lifted, and the object to be lifted can be lifted.Subsequently, when the object to be lifted is lifted to a predetermined position, the alternating attachment/detachment mechanism automatically buries the object. The zipper is released,
Especially when compared with the conventional technology, the alternating attachment/detachment mechanism does not malfunction even if vibrations are applied or the hanging is performed at an angle, and the safety required for the lifting device is absolutely ensured.

[Brief explanation of drawings]

Figures 1 to 6 (a) and (b) relate to a first embodiment of the chuck lifting device of the first invention of the present application, and Figures 1 to 5 are longitudinal sections showing operating states in which the order of operation steps is different. FIGS. 6(a) and 6(b) are a front view and a right side view of a fixed cam, which is a component of the invention. 7 and 8 relate to a second embodiment of the chuck lifting device of the first invention of the present application, FIG. 7 is a longitudinal sectional view, and FIG.
The figure is a front view of a fixed cam, which is a component of the invention. FIG. 9 is a longitudinal sectional view of a third embodiment of the chuck lifting device of the first invention of the present application. FIG. 10 is a longitudinal sectional view of the first embodiment of the chuck lifting device of the second invention of the present application. FIG. 9 is a longitudinal sectional view of a second embodiment of the chuck lifting device of the second invention of the present application. W... Object to be lifted, 1 @ No. lifting frame, 1a... Horizontal guide for chuck arm, 2 fists... chuck arm, 31. Contact arm, 4... inner chuck claw, 5... Lifting guide. 6...Sliding body, 7...@swing link, 8...φ lifted object, 9・ee fixed cam, 9a-φ pot vertical circulation path-shaped cam groove, 10ΦΦ・Hook is rod. 10a...Hook portion, 11-...Placement arm, 12...Fist outer chuck claw, Patent applicant Nissei Engineering Co., Ltd. Figure 2↓ Figure 4↓ (b) Figure 5 Figure 7↑ Procedure August 31, 1990 Ji-nii・'・niga

Claims (2)

[Claims] (1) A lifting frame having a desired shape having horizontal guides for chuck arms on both sides in the horizontal direction, a pair of chuck arms provided on each of the horizontal guides for chuck arms so as to be slidable in the horizontal direction, and the horizontal guide for chuck arms. an abutting arm provided from the lifting frame and abutting the upper surface of the object to be lifted so as to be located above the lifting frame; and an abutting arm provided from each chuck arm and abutting the upper surface of the object to be lifted. a pair of inner chuck claws positioned to face opposing inner surfaces of the object to be lifted when the object is lifted; a lifting guide provided from the lifting frame; and a slide body engaged and guided by the lifting guide; a pair of swing links that are provided to connect the slide body and each of the chuck arms and transmit the movement of the slide body toward and away from the lifting frame as the movement of the pair of chuck arms toward and away from each other; A required object to be lifted is provided above corresponding to the central part of the lifting frame so as to be integrated with the slide body and is lifted by an appropriate lifting machine, a fixed cam having a required vertical circulation path-like cam groove, and the like. An alternating attachment/detachment mechanism consisting of a hanging rod having a hook portion guided by a cam groove, the mechanism being distributed between the lifted object and the lifting frame,
When the object to be lifted approaches and then moves away from the lifting frame, the hook portion of the hanging rod is hooked in the middle of the vertical circulation path-shaped cam groove of the fixed cam, and an alternating attachment/detachment mechanism in which the hook portion of the hooking rod is released from the middle of the circulating path-like cam groove of the fixed cam when the hook portion is relatively separated after being relatively approached by a certain size; A chuck lifting device characterized by comprising: (2) A lifting frame having a desired shape having horizontal guides for chuck arms on both sides in the horizontal direction, a pair of chuck arms provided on each of the horizontal guides for chuck arms so as to be slidable in the horizontal direction, and the horizontal guide for chuck arms. a mounting arm provided from the lifting frame and placed on the top surface of the object to be lifted so as to be located below the lifting frame; and a placement arm provided from each chuck arm and placed on the top surface of the object to be lifted. a pair of outer chuck claws positioned so as to face opposite outer surfaces of the lifted object when the lifted object is lifted; a lifting guide provided from the lifting frame; and a slide body engaged and guided by the lifting guide; a pair of swing links that are provided to connect the slide body and each of the chuck arms and transmit the movement of the slide body toward and away from the lifting frame as the movement of the slide body toward and away from the lifting frame; A required object to be lifted is provided above corresponding to the central part of the lifting frame so as to be integrated with the slide body and is lifted by an appropriate lifting machine, a fixed cam having a required vertical circulation path-like cam groove, and the like. An alternating attachment/detachment mechanism consisting of a hanging rod having a hook portion guided by a cam groove, the mechanism being distributed between the lifted object and the lifting frame,
When the object to be lifted approaches and then moves away from the lifting frame, the hook portion of the hanging rod is hooked in the middle of the vertical circulation path-shaped cam groove of the fixed cam, and an alternating attachment/detachment mechanism in which the hook portion of the hooking rod is released from the middle of the circulating path-like cam groove of the fixed cam when the hook portion is relatively separated after being relatively approached by a certain size; A chuck lifting device characterized by comprising: