JPH0319159B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a lifting mug with a gripping device used when lifting and transferring amorphous reusable resources from industrial waste, dismantled products, etc. using a hoist or the like. It's about the internet.

[Conventional technology]

In the case of lifting magnets, as the temperature of the electromagnetic coil rises, the resistance increases and the current decreases, so the attractive force decreases by about 1/4.

Therefore, there is a drawback that the hanging amount varies significantly depending on changes in the environmental temperature during work. In particular, items of poor purity and irregular shapes that are said to be junk, such as household waste and miscellaneous items such as washing machines, cars, electric fans, bodies of dismantled cars, dismantled lightweight steel frames, and dismantled reinforcing bars of reinforced concrete. This tendency is particularly pronounced for objects that are tangled or bent, and the hanging ability decreases at high temperatures.

The conventional means of compensating for the above-mentioned drawbacks of the lifting magnet is to provide a club with a gripper driven by a hydraulic pump or the like separately from the one for the lifting magnet, and to use both as separate equipment. Alternatively, when using a lifting magnet, the hanging fitting is replaced with a crane hook.

[Problem that the invention seeks to solve]

In the above-mentioned method, there were problems in that the former required double investment in equipment, increasing costs, and in addition, the scope of work was narrow, and the amount of iron material that could be accommodated within the building site was reduced. Moreover, in the case of the latter, there were problems such as it took a long time to replace the hanging fittings, and the working time was reduced.

An object of the present invention is to grasp various irregularly shaped objects by touching each other with the tips of the gripping members to prevent them from spilling when the gripping members are extended downward, and to prevent the gripping members from spilling over the lifting magnet when the gripping members are not in use. To provide a lifting magnet with a gripper that can be folded and stored.

[Means for solving problems]

In order to achieve the above object, the present invention provides a gripper that can be easily attached to a conventional lifting magnet, has a combined structure of the lifting magnet and the gripper, and is capable of suspending and rotating a load. , the arm can be folded and stored when the gripping machine is not used, and (a) only the lifting magnet is used, (b) the lifting magnet and the gripping machine are used together, and (c) only the gripping machine is used. (d) You can select from four ways to use it at any time, such as removing the lifting magnet and gripping device and hanging it.

That is, a main support mount 5 is provided on the opposite side of the attraction surface 1a of the lifting magnet 1, which performs an adsorption operation when energized and stops the adsorption operation when the energization is interrupted, and a main support 7 is erected on the main support mount 5. An elevating cross 10 is attached to the tip of the piston rod 82 of the main cylinder member 8 installed in the main column 7, and two or more arm pieces 51 are extended at positions that equally divide the outer peripheral edge of the main column mount 5, A lock is pivotally connected to one end of the upper arm 21 on each arm piece 51, and one end of the lower arm 23 is pivotally connected to the other end of the upper arm 21, and locks the lower arm 23 in the use position and the folded position. A mechanism 24 is provided to constitute the gripping member 2, the intermediate portion of the lifting cross 10 and the upper arm 21 are connected by a sub-cylinder member 3, and the lower arm 23 is locked in the use position and the cylinder member 3 is extended. and the lower arm 23
When the lower arms 23 rotate downward, the other ends of the lower arms 23 come into contact with each other below the lifting magnets 1 to form a space between them and the lifting magnets 1 for holding an article, The lower arm 23 is locked in the folded position and the cylinder member 3 is shortened so that the upper arm 21
When the magnet rotates upward, the upper arm 21 and the lower arm 23 are folded to the storage position above the lifting magnet 1, and the flexible trunnion 74 is attached to the trunnion mount 72 provided at the upper end of the main column 7. It is characterized in that the flexible trunnion 74 is provided and suspended from the rotary drive device 4.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show an example of a lifting magnet with a gripping device according to the present invention. Code 1 in the diagram
is a lifting magnet, and this lifting magnet 1 is equipped with a gripping member 2 consisting of upper and lower arms 21 and 23, a main cylinder member 8, and a sub-cylinder member 3. The main cylinder member 8 and the sub-cylinder member The gripping member 2 performs a gripping operation and a folding operation by the expansion and contraction of 3.

These lifting magnets 1 and the like are detachably connected to a rotary drive device 4 equipped with a sheave 13 suspended from a hoist hook (not shown), and are configured to be able to rotate with a load suspended. There is.

Next, each of the above-mentioned members will be explained in detail. The lifting magnet 1 is formed into a substantially disk shape, and the flat lower surface serves as the attraction surface 1a.
A main support mount 5 is provided at the center of the upper surface of the lifting magnet 1 on the side opposite to the attraction surface 1a.

A main support 7 is fixed and erected at the center of the main support mount 5 by means such as welding. This main support 7
is formed into a rectangular tube shape (see Fig. 4 a to c),
A main cylinder member 8 is installed inside it.
This main cylinder member 8 consists of a hydraulic cylinder,
The lower end of the cylinder tube 81 is connected to the center of the main column frame 5 via the pin 9 (see Fig. 2), and the lifting cross 10 (detailedly shown in Figs. 5a and b) is connected to the piston rod 82. ) is attached with a fixing means such as a lock nut. The elevating cross 10 is guided by a piston rod 82 into a groove 71 extending in the length direction formed on the side surface of the upper half of the main support 7 to move up and down.

Furthermore, as shown in detail in FIG. 3, the main column mount 5 has four arm pieces 51 extending at positions that cover the outer circumference of the main column holder 5, and each arm piece 51 has a gripper at its tip. One end of the upper arm 21 of the member 2 is rotatably pivotally connected via a pin 6. The tip of the piston rod 31 of the sub-cylinder member 3 is connected to the pin 11 in the middle of the upper arm 21.
It is pivotally connected via. The sub-cylinder member 3 consists of a hydraulic cylinder, and its cylinder tube 32
The end portion of the cross member is connected to the above-mentioned lifting cross 10 via a pin 12.

The gripping member 2 includes the above-mentioned upper arm 21, a lower arm 23 rotatably connected to the other end of the upper arm 21 via a pin 22, and a locking mechanism 24 that locks the lower arm 23 to the upper arm 21. It is composed of.

The lock mechanism 24 is provided in a cover member 24a provided on the upper arm 21 side as shown in FIGS. 6a and 6b.
A lock pin 24 that removably engages with a lock hole 23a formed on the lower arm 23 side that locks the lower arm 23 in the folded position, and a lock hole 23b (see FIG. 1) that locks the lower arm 23 in the use position.
b, and a hydraulic cylinder 24d that moves the lock pin 24b against the elastic force of the spring 24c.
and the piston rod 24 of the hydraulic cylinder 24d.
1d and an L-shaped connecting arm piece 24e that connects the lock pin 24b. When the lock mechanism 24 is locked, the piston rod 241d retreats and the lock pin 24b protrudes due to the elastic force of the spring 24c, thereby locking the lock hole 23.
a, 23b, and when the lock is released, the piston rod 241d moves forward and pushes the lock pin 24b into the lock hole 23a, against the elastic force of the spring 24c.
Pull it out from 23b.

A trunnion mount 7 is attached to the upper end of the main support 7 mentioned above.
2 is provided. This trunnion frame 72
As shown in FIGS. 7a and 7b, a flexible trunnion 74 is provided via pins 73, 73, and the rotating cross 41 of the rotary drive device 4 can be removed from the flexible trunnion 74 via a pin 75. connected. This swivel trunnion 74 is for centering the slope caused by the suspended load.

As shown in FIGS. 8a and 8b, the rotary drive device 4 is composed of the above-mentioned rotary cross 41 and a hydraulic drive section 42 that rotationally drives the rotary cross 41.

The hydraulic drive unit 42 is constructed by equipping a drive case member 44 fixed to a valve set frame 43 with a valve set (not shown), and has an upper end 41a of the rotating cross 41 and an upper end thereof in the drive case member 44. A fan-shaped rotor 45 and a partition plate 46 that are engaged with the drive case member 41a are equipped, and the peripheral wall of the drive case member 44 has openings 44a, 44b and an outlet 44 for hydraulic oil.
c, 44d are provided (see Fig. 8c).

In this hydraulic drive unit 42, when rotating the fan-shaped rotor 45 (rotating cross 41) in the direction of the solid line in the figure, hydraulic oil is forced into the opening 44a.
Hydraulic oil is discharged from the outlet 44d and the inlet/outlet 44b via a stopper valve (not shown).
Hydraulic oil is forced in from 4b, while it is discharged from outlet 44c and inlet/outlet 44a via a stop valve (not shown). As a result, the fan-shaped rotor 45 (rotating cross 41) is driven to rotate within a range of 120 degrees. Note that oil leak prevention rubber plates 45a are provided on both sides of the fan-shaped rotor 45.

Further, a shaft portion 46 is provided on the peripheral wall portion of the drive case member 44.
Two sheaves 13 are provided on each shaft portion 46.
and a cover 14 for preventing the wire 15 (see FIG. 1, suspended from the hoist hook) wound around the sheave 13 from coming off.

[Effect]

Next, the operation of the above embodiment will be explained.

(1) When using only lifting magnet 1.

The piston rod 24 is moved by the hydraulic cylinder 24d.
1d and pulls out the logging pin 24b from the lock hole 23b to release the use position lock. Then, the main cylinder member 8 is operated to raise the elevating cross 10 to the upper limit position, and the sub cylinder member 3 is operated to retreat the piston rod 31 into the cylinder tube 32. As a result, the upper and lower arms 21 and 23 are folded upward and contracted and stored in the storage position above the lifting magnet 1, and when the lock pin 24b slides on the lower arm 23 and reaches the position of the lock hole 23a, the spring 24
The elastic force of c engages with the lock hole 23a and locks it in the folded position (see the two-dot chain line in FIG. 1).

After this, the lifting magnet 1 is operated.

(2) When using lifting magnet 1 and gripping member 2 together.

From the state of (1), the piston rod 241d is advanced by the hydraulic cylinder 24d to lock the lock pin 24b.
Pull it out from the lock 23a to unlock the folded position. When the sub-cylinder member 3 is operated to extend the piston rod 31 to its maximum length, the lock pin 24b slides on the lower arm 23 and reaches the position of the lock hole 23b, causing the spring 2
4c engages with the lock hole 23b and is locked in use. In this state, when the lifting magnet 1 is operated to attract and gather the iron materials and the elevating cross 10 is lowered by the main cylinder member 8, the upper and lower arms 21 and 23 move as shown by the two-dot chain line in FIG. After the condition, the lower arms 23 are extended to the use position as shown by the solid line in FIG. After holding the iron material so as not to spill it, the suction of the lifting magnet 1 is released and the material is transported to a predetermined position using a hoist.

(3) When only gripping member 2 is used.

The lifting magnet 1 does not operate, and the lifting cross 1 is moved by the main cylinder member 8 as in the case (2).
0 is lowered to lower the upper and lower arms 21 and 23 to the use position, and the tips of the lower arms 21 are brought into contact with each other to form a space between the lifting magnet 1 and the lifting magnet 1 to hold the article. Hold the iron material to prevent it from spilling and transport it to the designated location using a hoist.

(4) When using the hook by removing lifting magnet 1 and gripping member 2.

The pin 75 is pulled out from the flexible trunnion 74, the trunnion frame 72 (lifting magnet 1, gripping member 2, etc.) is removed from the rotating cross 41, and a hook is attached to the rotating cross 41 to perform sling work.

In any of the above cases (1) to (4), the hydraulic drive device 4
By operating the rotating cross 41, it is possible to rotate the rotating cross 41 by 120 degrees.

[Other Examples]

FIG. 9 shows a second embodiment of the invention. In this second embodiment, the lifting magnet 1 is suspended by the main cylinder member 8, the main support 7 is omitted, and when the piston rod 82 of the main cylinder member 8 is extended to the lower limit position, the upper and lower arms 21 and 23 are configured to be closed. Further, in this second embodiment, a triangular bracket 16 is fixed to the upper end of the lifting magnet 1, and a pin 16a is attached to the triangular bracket 16.
The upper arm 21 is connected via the upper arm 21.

Note that the triangular bracket 16 may be fixed to the circumferential surface of the lifting magnet 1.

FIG. 10 shows another embodiment of the locking mechanism 24. According to this embodiment, the locking claw 24f is pivotally attached to the upper arm 21 side via the pin 24g,
A hydraulic cylinder 24h that maintains the locked state of the locking pawl 24f and a spring 24i for releasing the lock.
It is equipped with two locking claws when locked.
4f is locked to the lower arm 23, and the piston rod of the hydraulic cylinder 24h is extended to engage the locking claw 2.
4f is restrained so that it does not rotate.

FIG. 11 shows a third embodiment of the invention. In this third embodiment, the lower arm 23 is connected to the upper arm 21.
The upper arm 21
A storage hydraulic deceleration motor 17 is installed on the side. When storing the lower arm 23, the lower arm 23 is pulled up into the upper arm 21 by driving the hydraulic deceleration motor 17 and using the W chain 18 wound around the sprocket wheel of the hydraulic deceleration motor 17.

When pulling out the lower arm 23, the upper arm 21
A fixing lock pin 19 is inserted between the lower arm 23 and the lower arm 23 to fix the lower arm 23 so that it does not rotate relative to the upper arm 21.

In addition, in this third embodiment, the lower arm 23
A separate claw scoop is connected to the end of the lower arm 23 with a hinge, and the claw scoop is folded onto the lower arm 23 and fixed so that it does not fall down with a cap screw, so that when the lower arm 23 is pulled out, the cap screw is attached. The claw scoop may be extended from the lower arm 23 by removing it, and fixed with a lock pin or the like so that the claw scoop does not rotate relative to the lower arm 23. Alternatively, the claw scoop tip is not installed on the lower arm 23 in advance, and the claw scoop tip is attached to the end of the lower arm like a slipper when the lower arm 23 is pulled out.
It may be fixed with a lock pin or the like.

In the third embodiment as well, the lifting magnet 1 is operated by the main cylinder member 8 as in the second embodiment.
is suspended, the main support 7 is omitted, and when the piston rod 82 of the main cylinder member 8 is extended to the lower limit position, the upper and lower arms 21, 23
is configured to close. Further, a triangular bracket 1 is attached to the upper end of the lifting magnet 1 (or the peripheral surface of the lifting magnet 1).
6 is fixed, and pin 1 is attached to the triangular bracket 16.
Upper arm 21 is connected via 6a.

In the first, second, and third embodiments, a hydraulic cylinder was used as the cylinder, but the cylinder is not limited to this, and an electric cylinder or the like may be used. Further, although the case where four gripping members 2 are provided is shown, the present invention is not limited to this, and two or three gripping members 2 may be used.

[Effects of the Invention] As explained above, according to the present invention, the gripping member can be compactly folded and stored on top of the lifting magnet so that only the lifting magnet can be used. You can choose to use the gripping member and the lifting magnet together, or use the gripping member alone, by extending downward from the magnet. When using the gripping member, the ends of the lower arms are mutually connected. Since the gripping member holds the iron material so as not to spill it, even if a power outage occurs during work, the iron material will be held by the gripping member and there is no danger of it falling. In addition, since it is equipped with a rotational drive device, the load can be easily rotated when transporting long items, and it is safe because it does not hit the operator.

[Brief explanation of the drawing]

1 to 8 a, b, and c show a first embodiment of the present invention, in which FIG. 1 is an overall front view, FIG. 2 is a partially omitted and partially cutaway front view, Figure 3 is a plan view of the main support mount, Figure 4a is a front view of the main support, Figure b is a sectional view taken along line B-B in Figure a, Figure c is C-C in Figure a. 5a is a plan view of the lifting cross; FIG. 6b is a side view of the cross; FIG. 6a is a front view of the locking mechanism; FIG.
is a front view of the trunnion frame, b is a side view of the same,
8a is a partially cutaway front view of the rotary drive device, FIG. 8b is a partially cutaway side view of the rotary drive device, FIG. 8c is a plan view of the drive case member of the rotary drive device, and FIG. FIG. 10 is an explanatory diagram showing another embodiment of the locking mechanism, and FIG. 11 is a partially omitted front view of the third embodiment. 1...Lifting magnet, 2...Gripping member,
21...Upper arm, 23...Lower arm, 24...Lock mechanism, 3...Sub-cylinder member, 4...Rotation drive device,
74... Universal trunnion, 8... Main cylinder member.

Claims (1)

[Scope of Claims] 1. Attraction surface 1 of lifting magnet 1 that performs an attraction operation when energized and stops the attraction operation when energization is cut off.
A main support pedestal 5 is provided on the opposite side of a, a main support 7 is erected on the main support mount 5, and an elevating cross 10 is attached to the tip of the piston rod 82 of the main cylinder member 8 installed within the main support 7. Two or more arm pieces 51 are extended at positions that equally divide the outer periphery of the main support pedestal 5, each of the arm pieces 51 is pivotally connected to one end of the upper arm 21, and the other end of the upper arm 21 is pivoted to each arm piece 51. The gripping member 2 is provided with a locking mechanism 24 to which one end of the lower arm 23 is pivotally attached and which locks the lower arm 23 in the use position and the folded position, and the intermediate part between the lifting cross 10 and the upper arm 21 are connected by the sub-cylinder member 3, and the lower arm 23 is locked in the use position and the cylinder member 3 is extended to open the lower arm 23.
When the lower arms 23 rotate downward, the other ends of the lower arms 23 come into contact with each other below the lifting magnets 1 to form a space between them and the lifting magnets 1 for holding an article, The lower arm 23 is locked in the folded position and the cylinder member 3 is shortened so that the upper arm 21
When the magnet rotates upward, the upper arm 21 and the lower arm 23 are folded to the storage position above the lifting magnet 1, and the flexible trunnion 74 is attached to the trunnion frame 72 provided at the upper end of the main column 7. A lifting magnet with a gripping device, characterized in that the flexible trunnion 74 is suspended from the rotary drive device 4.