JP3116263B2 - Automatic sling removal device for suspended loads - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic sling removal apparatus for hanging loads, and more particularly to a small and lightweight automatic sling removing apparatus for hanging loads.

[0002]

2. Description of the Related Art In a steel-frame construction work, lifting work such as pillars or beams is conventionally performed by a worker working at a high place. Climb to the place,
I work in a place with a poor footing. For this reason, as shown in FIG. 13, there is known an apparatus for wirelessly operating a wire to remove a sling as shown in FIG.

In FIG. 13, reference numeral 1 denotes a hanging piece provided on a hanging load, 2 denotes a clamp body having an elongated hole 3 into which the hanging piece 1 is inserted, 4 denotes a lock pin inserted into a hole of the hanging piece 1, 5 is a shackle rotatably attached to the clamp body 2, 6 is a balance body that suspends the shackle 5 via a lifting wire 7, and 8 is a lock pin 4 inserted into a hole of the hanging piece 1. An operation wire operated by the balance main body 6 to remove it;
Reference numeral 9 denotes a connection coupling for suspending the balance main body 6 by a crane or the like.

In such a conventional apparatus, when the lock pin 4 is pulled out from the hole of the hanging piece 1, that is, when the so-called sling is removed, the battery in the balance main body 6 is used, and the operation wire pulling cylinder is operated wirelessly to operate the operation wire 8.
To release the internal lock mechanism and lock pin 4
Is to be pulled out.

[0005] Other conventional automatic sling removal devices include:
It is known that a compressed air tank is provided in the balance main body 6 and the lock pin 4 is pulled out with compressed air instead of the operation wire 8.

[0006]

However, the balance main body 6 is heavy, for example, about 200 to 400 kg, and it is necessary to select a slightly larger lifting and lowering machine. Since the distance between the couplings 9 becomes considerable, there is a drawback in that the hanging allowance of the suspended load becomes longer.

The present invention has been made to eliminate the above disadvantages.

[0008]

SUMMARY OF THE INVENTION According to the present invention, there is provided an automatic sling removal apparatus for a suspended load, comprising a clamp body having a hole into which a hanging piece is inserted, and a slidable body inserted and removed by the clamp body. A lock pin held therein, a spring for suppressing the lock pin to be constantly pulled out from the hole, a lever manually operated to insert the lock pin into the hole against the spring, and a latch that is remotely operated to lock the lever in that position in a state of being above manual operation, a shackle for hanging the clamp main body, an engaging groove formed in the lock pin, said by the shackle is moved downward when the clamp body is <br/> suspended, the lock pin is engaged with the engaging groove of the lock pin in a state of being inserted into said hole, said lock Pin is characterized by comprising more safe locking rod to prevent being pulled out from the hole.

The automatic sling removal device for hanging loads according to the present invention comprises:
A spring is provided for always suppressing the locking rod in a direction in which the locking rod is engaged with the engagement groove .

[0010] The automatic sling removal device for hanging loads according to the present invention comprises:
The safety lock rod is controlled via rod control means
Is, above click this control means is, it's on the shackle
A rack gear that is lowered when the lamp body is suspended ,
A spring for constantly suppress the safety lock rod in a direction to engage with the engaging groove <br/> of the lock pin, the rack
When the gear is raised, the safety lock is provided on the rack gear to raise the safety lock rod together.
And a projection that engages the locking member .

[0011] The automatic slinging release device of the suspended load invention, the rack gear has a constantly suppress spring as allowed to downward movement.

[0012] The automatic sling removal device for hanging loads according to the present invention comprises:
The shackle are pivotally supported on the clamp body, rotation of the shackle is transmitted to the rack gear through the pinion, characterized in that allowed to move up and down this.

[0013] The automatic sling removal device for hanging loads according to the present invention comprises:
The apparatus further includes a spring that constantly suppresses the lever.

[0014]

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

In the present invention, as shown in FIG. 1 and FIG.
a, 2b, so that the lock pin 4 is advanced and retracted through the side walls 2a, 2b and the elongated hole 3,
The lock pin 4 is inserted into the hole of the hanging piece 1 provided in the hanging load in the elongated hole 3.

A flange 10 is formed at the base of the lock pin 4, and the lock pin 4 is constantly pulled out of the elongated hole 3 into the clamp body 2 between the flange 10 and the side wall 2 a of the clamp body 2. An acting pressure spring 12 is inserted. Further, the base of an L-shaped lever 13 is pivotally supported on the inner wall 11 of the clamp body 2 via a pivot pin 14, and one end 13a of the lever 13 is connected to the lock pin 4 as shown in FIG. And the other end 13b of the lever 13 projects out of the clamp body 2.
b by manually moving the pressing spring 1 around the pivot pin 14.
2, the lock pin 4 is inserted into the elongated hole 3 through the side wall 2a of the clamp body as shown in FIG. 1, and the tip of the lock pin 4 is inserted into the side wall 2b. So that it penetrates.

An electric latch 15 is provided. The electric latch 15 is moved by the lever 13 to the lock pin 4.
Is completely inserted into the long hole 3, and the lever 1
3 of one end 13a side can protrude to a position in contact with the outer end surface 13c, the press when the lever 13 is in a position other than the above
The lever 13 is suppressed to the withdrawn position by the pressure spring 12 .

The electric latch 15 is always suppressed to the protruding position by a pressing spring (not shown).
If the electric latch 15 is remotely operated, it can be moved to the retracted position.

Also, as shown in FIGS. 1 to 4, an engaging groove 18 for a safety locking rod 17 is formed at the tip of the lock pin 4, and as shown in FIG. With the safety lock rod 17 penetrating through the side wall 2b, the rod control means 19 controls the engagement groove 18
This prevents the lock pin 4 from falling out of the slot 3 even if the electric latch 15 is moved from the protruding position to the pulled-out position due to a malfunction.

As shown in FIG. 1, the rod control means 19 includes a gear 20 fixed to a pivotal support of the shackle 5.
, A bar-shaped rack gear 21 movable along the long hole 3, a pinion 22 interposed between the gear 20 and the rack gear 21, and the rack gear 21 constantly suppressed upward, so that the shackle 5 3 is interposed between the intermediate portion of the rack gear 21 and the upper portion of the inner wall 11 of the clamp body 2 so as to always be in the horizontal rotation position as shown in FIGS. 3 to 5 via the pinion 22 and the gear 20. The tension spring 23 and the upper end of the safety lock rod 17 are always connected with the upper end of the safety lock rod 17 so that the safety lock rod 17 is always restrained downward in order to engage the safety lock rod 17 with the engagement groove 18 of the lock pin 4. To move the tension lock 24 and the safety lock rod 17 inserted between the lower portion of the inner wall 11 of the clamp body 2 and the safety lock rod 17 upward by the rack gear 21, Serial made more and the projection 25 provided in the lower portion of the safety lock for the rack gear 21 so that the engageable on the top of the rod 17.

Since the apparatus for automatically hanging and hanging a suspended load of the present invention has the above-described structure, the lock pin 4 is pulled out of the elongated hole 3 into the clamp body 2 as shown in FIG. In this state, the electric latch 15 is prevented from moving to its protruding position by the lever 13. However, as shown in FIG. 1, the other end 13b of the lever 13 is manually turned clockwise about the pivot pin 14. When the lock pin 4 is completely pushed into the elongated hole 3 by rotating the lever 13, the electric latch 15 projects along the outer end surface 13 c of the lever 13 by the action of the pressing spring.

As a result, the lever 13 is prevented from rotating counterclockwise around the pivot pin 14 by the action of the pressing spring 12 by the electric latch 15, and the lock pin 4 is inserted into the slot 3. Locked in fully depressed state.

Therefore, if the hanging piece 1 provided for the hanging load is inserted into the long hole 3, the hanging load can be hung by the crane or the like via the shackle 5.

According to this embodiment, not only can the automatic slinging be removed with a very simple configuration, but also the conventional balance main body is not required, and the size and weight can be reduced.

Since the rod control means 19 is constructed as described above, the rack gear 21 is normally moved upward by the action of the tension spring 23 as shown in FIG.
As a result, the shackle 5 is rotated through the pinion 22 and the gear 20 to be in the horizontal position. In this state, the safety lock rod 17 is pulled up through the projection 25 of the rack gear 21 and is at the raised position.

Therefore, as shown in FIG. 5, if the lock pin 4 is pushed by the pressing spring 12 and is pulled out of the elongated hole 3, the hanging piece 1 provided on the suspended load is inserted into the elongated hole 3. Ready to start slinging.

Therefore, when the lever 13 is manually rotated clockwise as shown in FIG. 6, the lock pin 4 is inserted into the long hole 3 and the hole of the hanging piece 1, and when the lock pin 4 is completely inserted, the lock pin 4 is moved to FIG. As shown, since the electric latch 15 is not suppressed by the lever 13, the electric latch 15 is protruded by the pressing spring and the counterclockwise rotation of the lever 13 is prevented.

In this state, as shown in FIG. 8, when the shackle 5 is lifted up by the crane or the like via the wire 7 and the lifting is started, the shackle 5 rotates and the gear 20
The rack gear 21 descends via the pinion 22.

As a result, the safety locking rod 17 is lowered together with the rack gear 21 by the action of the tension spring 24.

Next, as shown in FIG. 9, the tip of the safety lock rod 17 is engaged with the engagement groove 18 of the lock pin 4, the shackle 5 is in a vertical state, and the grounding of the suspended load can be started. Become.

In the case of removing the sling, as shown in FIG. 10, if the wire 7 is loosened, the shackle 5 rotates toward the horizontal position, and the rotation causes the rack gear 21 to start rising. Until the rack gear 21 rises, the projection 25 does not engage with the safety lock rod 17 even if the rack gear 21 is raised. When the shackle 5 is further inclined, the projection 25 of the rack gear 21 engages with the safety lock rod 17. As a result, the lower end of the safety locking rod 17 comes off the engagement groove 18 of the lock pin 4.

Therefore, if the electric latch 15 is retracted by remote control in this state, the pressing spring 12 is moved as shown in FIG.
As a result, the lever 13 rotates counterclockwise, the lock pin 4 is pulled out of the elongated hole 3 and the hole of the suspension piece 1, and the lock of the suspension piece 1 is released.

FIG. 12 shows a state in which the clamp body 2 is lifted by the crane via the wire 7 and the hanging piece 1 is removed from the clamp body 2.

In another embodiment of the present invention, a tension spring 16 is inserted between the other end 13b of the lever 13 and the inner wall 11 of the clamp body 2 as shown in FIG.
3 is always rotated counterclockwise about the pivot pin 14.

According to this embodiment, the spring force of the tension spring 16 can be added to the spring force of the pressing spring 12 acting to pull out the lock pin 4 from the long hole 3.

[0036]

As described above, according to the automatic sling removal apparatus for hanging loads of the present invention, a small and light automatic sling removal apparatus can be realized, and if the safety lock rod 17 is engaged with the lock pin 4, Its safety is extremely high.

When the shackle 5 is disengaged, the lock of the safety lock rod 17 is not released until the shackle 5 is tilted by about 45 ° or more even if the wire 7 is loosened.

Further, even if the electric latch is retracted due to malfunction during transportation of the suspended load, safety can be ensured by the action of the safety lock rod. Further, since the balance body is not used, the suspension allowance of the suspended load can be shortened. There are great benefits.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view of an apparatus for automatically removing slings from a suspended load according to the present invention.

FIG. 2 is a bottom view of a main part of the automatic sling removal device for hanging loads according to the present invention.

FIG. 3 is a vertical sectional front view for explaining the operation of the apparatus for automatically hanging and hanging a suspended load according to the present invention.

FIG. 4 is a vertical sectional front view showing another embodiment of the automatic sling removal apparatus for hanging loads according to the present invention.

FIG. 5 is a longitudinal sectional front view for explaining the operation of the apparatus for automatically hanging and hanging a suspended load according to the present invention.

FIG. 6 is a vertical sectional front view for explaining the operation of the apparatus for automatically hanging and hanging a suspended load according to the present invention.

FIG. 7 is a vertical sectional front view for explaining the operation of the apparatus for automatically hanging and hanging a suspended load according to the present invention.

FIG. 8 is a vertical sectional front view for explaining the operation of the apparatus for automatically hanging and hanging a suspended load according to the present invention.

FIG. 9 is a vertical sectional front view for explaining the operation of the apparatus for automatically hanging and hanging a load according to the present invention.

FIG. 10 is a vertical sectional front view for explaining the operation of the apparatus for automatically hanging and hanging a load according to the present invention.

FIG. 11 is a vertical cross-sectional front view for explaining the operation of the apparatus for automatically hanging and hanging a suspended load according to the present invention.

FIG. 12 is a vertical sectional front view for explaining the operation of the apparatus for automatically hanging and hanging a suspended load according to the present invention.

FIG. 13 is a front view of a conventional automatic sling removal device for hanging loads.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Suspension piece 2 Clamp main body 2a Side wall 2b Side wall 3 Long hole 4 Lock pin 5 Shackle 6 Balance main body 7 Lifting wire 8 Operation wire 9 Connection coupling 10 Flange 11 Inner wall 12 Press spring 13 Lever 13a One end 13b Other end 13c Outer end face 14 pivot pin 15 electric latch 16 tension spring 17 safety lock rod 18 engagement groove 19 rod control means 20 gear 21 rack gear 22 pinion 23 tension spring 24 tension spring 25 protrusion

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho-56-158475 (JP, U) Japanese Utility Model Sho-62-144283 (JP, U) Japanese Utility Model Sho-58-192877 (JP, U) Japanese Utility Model Sho-47 30263 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B66C 1/10-1/66

Claims (5)

(57) [Claims] 1. A clamp body having a hole into which a suspending piece is inserted, a lock pin slidably held by the clamp body so as to be inserted into and removed from the hole, and the lock pin is always kept in the hole. A spring for restraining the lever from being pulled out, a lever manually operated to insert the lock pin into the hole against the spring, and a lever for locking the lever in the position when the lever is manually operated. a latch is remotely operated, and shackle for hanging the clamp main body, an engaging groove provided on the lock pin is moved downward when the clamp body is suspended by the shackle, the lock pin A lock for a safety lock that engages with the engagement groove of the lock pin while being inserted into the hole and prevents the lock pin from being pulled out of the hole. De automatic slinging release device of the suspended load, characterized in that it further consists. 2. An apparatus according to claim 1, further comprising a spring for constantly restraining said safety locking rod in a direction engaging with said engagement groove. . 3. The method according to claim 2, wherein the safety lock rod is a rod control hand.
Is controlled via the stage control unit is moved downward when the clamp body I by the above shackle <br/> is suspended from
A rack gear , a spring for constantly restraining the safety lock rod in a direction of engagement with the engagement groove of the lock pin, and a spring for securing the safety lock when the rack gear is raised .
Provided on the above rack gear to raise the rod together
2. The apparatus according to claim 1, further comprising a projection that engages with the safety lock member . 4. The apparatus according to claim 3, further comprising a spring that constantly suppresses the rack gear so as to move the rack gear upward. Wherein said shackle are pivotally supported on the clamp body, according to claim 3 in which rotation of the shackle is transmitted to the rack gear through the pinion, characterized in that allowed to move up and down this Or the automatic sling removal device for hanging loads according to 4.