JP2000335870A - Automatic cargo loading hook, and lock mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic cargo loading hook capable of automatically locking and releasing rotation of a hooker. SOLUTION: In a constitution in which a hooker 4 is pivotally attached between right and left fork parts 2B, 2C of a frame 2, a rack gear 8 is inwardly formed at a left upper part of the hooker 4, a lock body 9 having an inward rack gear 11 is rotatably disposed at a right upper part of the hooker 4, a pinion gear 13 is disposed to be rotated by a motor 12 to be engaged with both rack gears 8, 11, so rotation directions of the hooker 4 and the lock body 9 are reversed by rotation of the pinion gear 13, a tip part of a stopper 6 rotatably suspended at an upper back part of the hooker 4 is engaged with a step part 5 in the hooker 4 and a lock groove in the lock body 9 to stop rotation of the hooker 4, the lock body 9 is rotated counterclockwise to release the stopper 6 by right rotation of the pinion gear 13, and the hooker 4 is rotated clockwise to push up the tip part of the stopper 6 for stopping the motor 12 in this automatic cargo loading hook 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic cargo handling hook, and more particularly to an automatic cargo handling hook capable of automatically releasing and locking a stopper by rotating a lock gear and a hacker for a stopper by rotation of the same pinion gear.

[0002]

2. Description of the Related Art Heretofore, there has been known a cargo handling hook which releases and locks a stopper for locking the rotation of a hacker pivotally supported by a frame by pulling a spring pressure and an electromagnet.

[0003]

In the above-mentioned cargo handling hook, it is good to use it for a relatively light load, but when it is used for a heavy load, the magnetic force of the electromagnet is weak and the lock can be released. Therefore, a large electromagnet must be employed, and accordingly, a tow line must be thick, and the related members must be necessarily strong. Furthermore,
Returning a large mint by hand so that it does not return to its original position while spinning when unloading was a heavy task due to its heavy weight. SUMMARY OF THE INVENTION An object of the present invention is to provide an automatic loading and unloading hook that is compact even for heavy loads, can operate quickly and reliably, and can automatically return a rotated hacker to its original position. It was developed as

[0004]

The present invention has the following technical means in order to solve the above problems and achieve the object.

That is, as a main configuration, in a configuration in which a hacker is pivotally mounted between the left and right forks of the frame,
A rack gear is formed inwardly on the upper left of the hack, and a lock body having an inward rack gear on the upper side is rotatably disposed on the right side of the hack, and a pinion gear is rotated by a motor so as to mesh with the rack gears. The rotation of the pinion gear is freely arranged, and the rotation direction of the hacker and the lock body is configured to be diametrically opposite. The tip of the stopper rotatably hung on the upper and rear portions of the hacker is provided with the step portion of the hacker and The rotation of the hacker is stopped by being engaged with the lock groove of the lock body, the lock body rotates counterclockwise to release the stopper by the clockwise rotation of the pinion gear, and the hacker rotates clockwise to push up the tip of the stopper. As an automatic cargo handling hook configured to perform a motor stop operation.

[0006] In addition to the above configuration, when the motor is manually or automatically rotated reversely after the tip of the stopper is pushed up by the hacker to stop the motor, the hacker rotates counterclockwise. An automatic loading and unloading hook configured to return to the original position, and the lowered stopper pushes the lock body clockwise to rotate the lock body clockwise by the pinion gear and lock the stopper that has locked the hacker. Is configured as

An automatic loading and unloading hook in which the above-mentioned hacker is provided with a resilient material for urging a rotational force in a clockwise direction in a normal state.

[0008] An automatic loading and unloading hook, wherein the fork portion is provided with a control mechanism for controlling the rotation of the motor by sensing at the upper and lower swing positions of the tip of the stopper.

[0009]

The present invention configured as described above has the following operation.

In a normal state, the stopper is engaged with the stepped portion of the hacker to stop the rotation, but the lock body is securely locked by fitting the tip of the stopper into the lock groove.

The rotation of the pinion gear causes the hacker and the lock body to rotate in reverse, so that when the pinion rotates clockwise, the lock body rotates counterclockwise to release the stopper from the hacker. Thereby, the hacker is rotated clockwise by the pinion, and the wire and the like are released.

The tip of the stopper swings and is pushed up by the rotation of the hacker. When the control mechanism detects the position of the tip, the motor is stopped.

When the motor rotates left, the hacker rotates counterclockwise and returns. When returning, the stopper engages with the stepped portion of the hacker, the lock body rotates clockwise by the pinion gear, and the tip end of the stopper is fitted into the lock groove and locked. At the same time, the motor is stopped by the control of the control mechanism.

[0014]

Embodiments of the present invention will be described with reference to the drawings. 1 is a front view of the main part, and FIG. 2 is a side view of the main part, and the right side of the figure is the front. FIG. 3 is a side view of the lock mechanism. In the figure, an automatic cargo handling hook 1 (hereinafter simply referred to as a hook) has a pair of left and right fork portions 2B, 2B under a hanging main portion 2A.
An eccentric cam-shaped hacker 4 is pivotally mounted on a frame 2 integrally formed with 2C via a fixed shaft 3 laid between the forks 2B and 2C. A step portion 5 which engages with a stopper 6 is formed in the upper rear surface of the body of the hacker 4.

The fork portions 2B, 2C of the frame 2
The tip of the stopper 6 is located between the step 5 of the hacker 4.
The stopper 6 is swingably suspended via a fixed shaft 7 so as to be engaged with the stopper 6. As shown in FIG. 4, the stopper 6 has a cutout 6A at the right edge in the front.

A rack gear 8 is fixed to an upper left portion of the front of the hack 4 with its gear surface facing inward. Further, the lock body 9 is adjacent to the right side in the front of the hacker 4.
Are rotatably arranged. As shown in FIG. 3, the lock body 9 has a semi-circular shape rotatable about the fixed shaft 3 and has a lock groove 10 formed at the rear upper portion for locking the stopper 6. A rack gear 11 is formed in an upper front part inward.

As shown in FIGS. 2 and 3, a geared motor 12 is provided at an upper front portion between the fork portions 2B and 2C.
And a pinion gear 1 disposed at the tip of the output shaft.
2 engages with the pinion gear 13 when the stopper 6 is disengaged and the hacker rotates in the direction shown by the arrow in the state shown in FIG. It is configured to be. That is, as for the hacker 4, the virtual line 1 in FIG.
A resilient material indicated by 4 is interposed so as to urge the hack clockwise, and when the stopper 6 is released, the hack 4 rotates in the direction of the arrow. In this case, depending on the shape of the mint, it may be possible to make a slight rotation by its own weight even without the elastic material 14.

The hook 1 constructed as described above operates as follows. In FIG. 3, when the motor 12 is rotated clockwise, the lock body 9 meshed with the pinion gear 13 is rotated.
3 rotates counterclockwise in FIG. Along with this, the lower part of the stopper 6 is gradually pushed up, and the tip of the stopper 6 is released from the lock groove 10. At the same time, the tip of the stopper 6 in FIG. 2 is also released from the step 5 of the hacker 4 so that the stopper 6 can rotate freely, and the hacker 4 rotates clockwise in FIG. As a result, the rack gear 8 of the hacker 4
2 meshes with the pinion gear 13 rotating at 2 so that the hacker 4 rotates clockwise in FIG.

As a result, the lower portion of the hacker 4 rises while rotating, and slides on the lower surface of the stopper 6 while sliding.
Push up at the bottom. When the lower portion of the stopper 6 reaches the upper swing limit, as shown in FIG. 5, a control mechanism (for example, a proximity sensor) 15 detects the proximity of the stopper 6 and automatically controls the motor 12 to stop. As a result, the wires 17 suspended from the hacker 4 come off.

After a predetermined time has elapsed, when an input is made to the motor 12 manually or automatically, the motor 12 starts to rotate left. As a result, the hacker 4 returns to its original position, and the tip of the stopper 6 swings down while sliding on the hacker 4. When the tip of the stopper 6 is lowered to the lower limit of the swing and the tip of the stopper 6 is about to drop sharply into the step 5 of the hacker 4, the locking of the lock body 9 in FIG. To push the upper part of the groove 10, the rack gear 11 meshes with the pinion gear 13 to rotate the lock body 9 clockwise.

As a result, the tip of the stopper 6 is forcibly fitted into the lock groove 10 of the lock body 9. At this time, the control mechanism (for example, a proximity sensor) 16 senses the tip of the stopper 6 and automatically stops the rotation of the motor 12 to stop it. As a result, the tip of the stopper 6 engages with the step 5 of the hacker 4 as shown in FIG. 2 to reliably stop the rotation of the hacker 4, so that the load applied to the hacker 4 via the wire 17 or the like is received.

It should be noted that the present invention is not limited to the above-described embodiment, and the design can be appropriately changed according to the purpose. As the control mechanism, a touch sensor, an infrared switch, and other well-known moving / stopping control mechanisms can be adopted. The shape of the frame may also be a form in which a pair of side plates are fitted in a fork shape. In the text, left and right, clockwise,
The expression in the counterclockwise direction is based on the description in the figure, and is not bound by this term when the direction changes.

[0023]

The present invention constructed as described above has the following excellent effects.

Since the position of the stopper is locked by the lock body when the stopper stops the hacker, the stopper does not come off due to vibration or the like, so that a heavy load can be reliably hung on the hacker. There is.

Since the pinion gear rotated by the motor rotates the hacker and the lock body in a staggered manner in opposite directions, the hacker can be locked and unlocked automatically.

Since the pinion gear is configured to be rotated by the motor, it is possible to securely lock the motor with a small motor, and to provide a compact structure.

Since the hacker is rotated by the combination of the pinion gear and the rack gear, even when a heavy load is applied to the hacker, the hacker can be reliably rotated with a small force to remove a wire or the like that has been subjected to a heavy load. There is an effect that can be removed.

Since the hacker can be rotated without manually after unloading from the hacker, even if the heavy hacker is heavy, it does not need to be rotated manually to return to the original position. The effect is excellent in workability.

Since the structure is simple, the maintenance and management are easy and the durability is excellent.

[Brief description of the drawings]

FIG. 1 is a front view of an automatic cargo handling hook.

FIG. 2 is a side view of the automatic cargo handling hook.

FIG. 3 is a side view of the automatic cargo handling hook.

FIG. 4 is a front view of a stopper.

FIG. 5 is a side view of the automatic cargo handling hook.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 automatic loading hook 2 frame 2A hanging main part 2B, 2C fork part 3 fixed shaft 4 hacker 5 stepped portion 6 stopper 7 fixed shaft 8 rack gear 9 lock body 10 lock groove 11 rack gear 12 motor 13 pinion gear 14 spring material 15, 16 control Mechanism 17 Wire

Claims (5)

[Claims] In a configuration in which a hacker is pivotally mounted between left and right forks of a frame, a rack gear is formed inward at an upper left portion of the hacker, and a lock having an inward rack gear at an upper portion adjacent to the right of the hacker. The body is arranged rotatably,
A pinion gear is rotatably provided by a motor so as to mesh with the rack gears, and the rotation of the pinion gear causes the rotation directions of the hacker and the lock body to be exactly opposite to each other. The tip of the stopper is engaged with the stepped portion of the hacker and the lock groove of the lock body to stop the rotation of the hacker, and the clockwise rotation of the pinion gear causes the lock body to rotate counterclockwise to release the stopper. An automatic loading and unloading hook configured to stop the motor by clockwise turning up the tip of the stopper. 2. After the tip of the stopper is pushed up by a hacker and the motor is stopped, the motor is rotated in the reverse direction so that the hacker returns in a counterclockwise direction, and the lowered stopper moves the lock body to the clock. 2. The automatic loading and unloading hook according to claim 1, wherein the lock is rotated clockwise by a pinion gear by being pushed around to lock a stopper that holds the hacker. 3. The automatic cargo handling apparatus according to claim 1, wherein the hacker is provided with a resilient material for urging a rotational force in a clockwise direction in a normal state. hook. 4. A proximity sensor is provided in the fork portion as a control mechanism for controlling rotation of the motor by detecting the upper and lower limits of the swing of the tip of the stopper. 4. The automatic cargo handling hook according to any one of 1 to 3. 5. A mechanism for stopping the rotation of a hacker of a cargo handling hook, comprising an eccentric cam-shaped hacker pivotally attached to a frame and having a rack gear at an upper part, and a rack gear rotatably disposed adjacent to the eccentric cam-shaped hacker. A lock body, a pinion gear disposed between both rack gears and driven by a motor,
The stopper consists of a stopper suspended from the frame and a control mechanism for controlling the operation of the motor. The tip of the stopper engages with the step at the rear of the hacker to stop the rotation of the hacker. The lock body and the hacker are rotated in reverse by the forward and reverse rotation of the pinion gear, and the stopper is released and locked, and the stopper is released by the forward and reverse rotation of the hacker. A hook locking mechanism wherein the motor is automatically controlled to stop when the distal end swings and approaches a vertical control mechanism.