JPH061377U - Gravity-type automatic lifting device - Google Patents

Abstract

(57) [Summary] [Object] The present invention provides a gravity-type automatic hoisting device that does not require a power source, and has a locking mechanism that keeps the gripping mechanism in an expanded state when the hoisting device is empty before gripping a load. It provides a built-in hanger. [Structure] A gravity which is configured to contract the grip mechanism by connecting the inner scoop 11 connected to the carrier and the outer scoop 9 provided with a gripping mechanism by a link, and raising the inner scoop to the outer scoop. In the automatic lifting device, a lock plate 4 that engages with a stopper 5 provided inside the outer ridge 9 is pivotally attached to the inner ridge 11, and the lock plate 4 is moved each time the lowering movement of the inner ridge 11 with respect to the outer ridge 9 is performed. The link plate 3 for switching between the locking position and the non-locking position with respect to the stopper 5 is hung on the lock plate 4, and the lock plate 4 engages with the stopper 5 when the lifting device is lifted by an empty load, and the gripping mechanism is expanded. To maintain.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a gravity-type automatic hoisting device which is suspended by a carrier by a rope or a chain, and more particularly to an automatic locking mechanism thereof.

[0002]

[Prior art]

 A conventional roll paper gripping and suspending tool will be described with reference to FIG. An electric motor 51 is provided on a hoisting tool 54 suspended by a carrier, and a pinion 52 mounted on a drive shaft of the electric motor 51 is engaged with a rack 57 provided on an upper surface of a claw 53. The rack 57 presses the claw 53 against the load to grip the load 50. It should be noted that 3 to 4 claws 53 are arranged adjacent to the outer periphery of the load 50 and expand and contract in the radial direction.

[0003]

[Problems to be solved by the device]

 The above-mentioned conventional technique has the following problems. Since the electric motor is used as a power source for operating the lifting device, the price of the lifting device becomes high and a power source for the driving device is required. The present invention relates to a gravity-type automatic hoisting tool that does not require a power source. The hoisting tool includes a lock mechanism that keeps the gripping mechanism in an expanded state (open state) when the hoisting tool is empty before holding the luggage. It is intended to provide.

[0004]

[Means for Solving the Problems]

 A gravity-type automatic hoisting tool is constructed by linking an inner scoop suspended from a transporter such as a crane and an outer scoop with a horizontally expandable / contractible gripping mechanism with a link. The lock plate that engages with the stopper fixed to the inner surface of the outer ridge is pivotally attached to the inner ridge, and the link plate is hung on the lock plate, and when the inner ridge descends with respect to the outer ridge, the lock plate is moved by the outer ridge or on the outer ridge. The abutting member pushes up the link plate so that the lock plate on the inner side and the stopper on the outer side can be switched between the locked state and the non-locked state for each movement.

[0005]

[Action]

 The outer bottom part directly or indirectly contacts the lower end of the link plate, and the link plate is moved in the vertical direction, whereby the position of the lock plate moves left and right. That is, the position of the lock plate is switched to the locking position and the non-locking position with respect to the stopper, the gripping mechanism is maintained in the open state when the empty load is lifted, and the load after the load contacts the lower surface of the outer ridge. When hanging, the gripping mechanism contracts and grips the load. Thus, luggage, for example, roll paper is gripped.

[0006]

【Example】

 An embodiment of the present invention will be described with reference to FIGS. In the figure, 1 is a lock mechanism, 2 is a push-up bar, 3 is a link plate, 4 is a lock plate, 5 is a lock stopper, 6 is a guide, 7 is a pin, 8 is a pin, 9 is an outside, 10 is a stopper, 11 Is an inner cover, 12 is a fixing plate, 20 is a hanging tool, 21 is a hanging stand, 22 is a support stand, 22a is a horizontal arm, 22b is a box part, 25 is a gripping arm, 27 is roll paper, 28 is a nail. is there.

First, the gravity type gripping and hanging device 20 to which the present invention is applied will be described with reference to FIGS. 4 and 5. The suspending tool 20 includes a suspending stand 21 composed of a radial integrated horizontal arm for suspending and supporting a central upper portion thereof on a transporter (not shown), and a suspending stand 21 via a built-in lock mechanism 1 at the center lower surface of the suspending stand 21. On the other hand, a support base 22 including a horizontal arm 22a that is vertically movable and parallel to a suspension base and a box portion 22b that surrounds the lock mechanism 1, and a horizontal side of the support base 22 with one side of an L-shaped arm 23 and a link piece 24. An inverted L-shaped gripping arm 25 that is movably linked, an L-shaped connecting plate 26 that is pin-connected to the other end of the arm 23 and the arm of the suspension base 21, and a roll paper 27 that is attached to each gripping arm 25 with a horizontal pin. The nail 28 for use. In the illustrated example, the roll paper 27 is gripped by the four claws 28 along the four horizontal arms in the radial direction.

Next, the lock mechanism 1 will be described with reference to FIGS. 1 to 3. The lock mechanism 1 is a cylindrical outer ridge 9 which is fixed inside the box 22b at the center of the support base 22 and has an open upper end, and the upper end is fixed to the central lower surface of the suspension base 21 and the lower part is inserted into the outer ridge 9 from above. The inserted cylindrical inner casing 11, the inverted C-shaped stopper 10 fixed to the surface of the vertical fixing plate 12 in the inner casing 11, the lock plate 4 attached to the fixing plate 12 by the pin 7 so as to rotate right and left on the stopper 10. The link plate 3 has one end connected to the body of the lock plate 4 with a pin 8 and is hung, and the link plate 3 supported vertically by a vertical guide b provided at the bottom of the fixed plate 12 for pushing up. An opening 11a provided in the inner cover 11 wall so that the tip of the lock plate 4 can be projected to the outside of the inner cover 11 at the upper end of the lifting rod 2 and the stopper 10, and a stopper provided at the inner periphery of the upper end of the outer cover 9. It is composed of 5.

The push-up bar 2 is pushed up together with the outer table 9 by the lower end of the box portion 22b of the support 22 riding on the roll paper 27 as shown in FIG. 1 and then the suspension table 21 further descending. In the state shown in FIG. 1, when the push-up bar 2 and the outer arm 9 are raised, the lock plate 4 swings counterclockwise to the left side (grasping side) and switches, and when the lock plate 4 is on the left side, it is pushed up. On the contrary, when the rod 2 and the outer edge 9 rise, the lock plate 4 automatically switches to the right side.

FIG. 4 shows a state in which the hanger 20 moves up and down without holding the roll paper 27. At this time, the lock mechanism 1 opens the link plate 3 and the lock plate 4 as shown in FIG. It is located on the side (right side), is in contact with the stopper 5 and maintains the locked state with the support base 22, and the push-up bar 2 is lowered to the position on the guide 6 by its own weight. FIG. 7 shows a state immediately after the suspending tool 20 is lowered onto the roll paper 27 and the lower surface of the central portion of the support table 22 is brought into contact with the upper end surface of the roll paper 27. In the lock mechanism 1, as shown in FIG. 8, the outer ridge 9 and the push-up bar 2 are slightly raised, and the lock plate 4 is separated from the stopper 5 and is rotated slightly inward.

FIG. 9 shows a state where the suspending tool 20 is further lowered with respect to the roll paper 27. At this time, in the lock mechanism 1, as shown in FIG. It is further pushed up via and is automatically moved to the grip side (left side). FIG. 11 shows a state in which the suspending tool 20 is rolled up from the state of FIG. 9 and the roll paper 27 is gripped and raised. At this time, in the lock mechanism 1, as shown in FIG. 12, the inner ridge 11 and the suspension base 21 rise, the outer ridge 9 and the support base 22 remain at their height positions by their own weight, and the connecting plate 26 and the L-shaped arm 23 are retained. Rotates to move the gripping arms 25, 25 toward each other, and the claw 28 on the gripping arm 25 grips the roll paper 27. When the weight of the roll paper 27 is grasped and applied to the arm 25, the grasping force of the claw 28 is strengthened.

When the roll paper 27 is separated from the suspending tool 20 and lowered, the suspending tool 20 is lowered in the state of FIG. 11, the roll paper 27 is landed, and then the suspending tool 20 is further lowered. The shaped arm 23 rotates in the opposite direction to open the gripping arm 25 as shown in FIG. 9, and the claw 28 separates from the roll paper 27. At this time, in the lock mechanism 1, the push-up bar 2 and the outer arm 9 rise from the state of FIG. 12, and the push-up bar 2 pushes the link plate 3 to automatically switch the lock plate 4 to the open side as shown in FIG. The lock plate 4 meshes with the stopper 5 to keep the gripping arm 25 open. In this state, the suspending tool 20 can freely rise and move, and the gripping and transporting of the other roll paper 27 can be repeated again.

The operation sequence of the above-mentioned suspension and lock mechanism is summarized as follows. Hanging device; Fig. 4 → Fig. 7 → Fig. 9 → Fig. 11 → Fig. 9 → Fig. 4 → Locking mechanism; Fig. 6 → Fig. 8 → Fig. 10 → Fig. 12 → Fig. 6 →

[0014]

[Effect of device]

 According to the present invention, an inner cage suspended and connected to a carrier and an outer cage provided with a horizontally expandable / contractible gripping mechanism on the lower side are linked by a link, and the inner cage is lowered with respect to the outer cage. In the gravity-type automatic lifting device, the gripping mechanism is expanded by expanding the gripping mechanism, and the gripping mechanism is contracted by raising the inner limb with respect to the outer limb. A link plate that pivotally attaches a lock plate that engages with the lower surface of the inner plate to the lock and switches the lock plate between the locked position and the unlocked position with respect to the stopper each time the lowering motion of the inner cover with respect to the outer position is performed. A lock mechanism having a simple structure is hung from the lock plate, and the lock plate is configured to engage with the stopper to maintain the gripping mechanism in an expanded state when the lifting device is lifted by an empty load. Drive equipped It is possible to provide a hanger there is no need of force.

[Brief description of drawings]

FIG. 1 is a sectional view of a locking mechanism of a gravity-type automatic lifting device according to the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a plan view of FIG.

FIG. 4 is a side view of the gravity-type automatic lifting device according to the present invention when the load is empty.

FIG. 5 is a plan view of FIG.

FIG. 6 is an operation state diagram of the lock mechanism when the suspender is in the state of FIG. 4.

7 is a side view showing a state where the outer lower end of the hanging tool shown in FIG. 4 is in contact with the upper surface of the roll paper.

FIG. 8 is an operation state diagram of the lock mechanism when the suspender is in the state of FIG. 7.

9 is a side view of the lifting device shown in FIG. 7 in a state where the outer limb is pushed up.

FIG. 10 is an operation state diagram of the lock mechanism when the suspender is in the state of FIG. 9;

FIG. 11 is a side view showing a state in which the lifting device shown in FIG. 9 is lifted and the gripping mechanism grips the roll paper.

FIG. 12 is an operation state diagram of the lock mechanism when the suspender is in the state of FIG. 11.

FIG. 13 is a side view of a conventional roll paper gripping and suspending device.

[Explanation of symbols]

 1 Lock Mechanism 3 Link Plate 4 Lock Plate 5 Stopper 9 Outer Ridge 11 Inner Ridge 21 Suspension Stand 22 Support Stand 27 Roll Paper

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takeo Sakurai 17 Sakurai Kenzai Sangyo Co., Ltd., 11-11 Konyacho, Shizuoka City, Shizuoka Prefecture

Claims (1)

[Scope of utility model registration request] 1. An inner cage suspended and connected to a carrier and an outer cage provided with a gripping mechanism capable of expanding and contracting in the horizontal direction on a lower side are linked by a link, and the inner cage is lowered with respect to the outer cage. In the gravity-type automatic suspending device in which the gripping mechanism is expanded by causing the inner scoop to rise and the contraction mechanism to be contracted by raising the inner scoop relative to the outer scoop, a stopper is attached to the inside of the outer scoop and the stopper is attached. A lock plate that engages with the lower surface is pivotally attached to the inner ridge, and the link plate that switches the lock plate between the locking position and the non-locking position with respect to the stopper at each downward movement of the inner ridge against the outer ridge is also locked. A gravity-type automatic suspender configured to be suspended on a plate, and the lock plate is engaged with a stopper to maintain the gripping mechanism in an expanded state when the suspender is lifted by an empty load.