JP2002120989A - Hoisting accessory - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hoisting accessory with a small size and a light weight capable of certainly handling any cargo. SOLUTION: The hoisting accessory is provided with a pair of grasp arms 2 of which the upper end is pivotally supported to a hanger fitting 4 and which is openable/closable; a pair of links 5a, 5b of which one end is pivotally supported at an intermediate part of the grasp arm 2 by a support shaft 6b and the other end is connected to a center part by a connection shaft 6c; an operation lever 7 of which an upper end is pivotally supported to the link and which has a contact guide part 8 extending from a vertical lower part of the pivotally supported part to one direction at a lower part and sliding on an upper surface of a baggage at the time of clamping action of the grasp arm 2 and restriction parts 9, 10 for restricting a turning to the contact guide part direction at an upper part; and a restriction means 11 for restricting an inclination motion of the link to the downward direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hanger, and more particularly, to a hanger capable of holding a load without requiring any human intervention.

[0002]

2. Description of the Related Art An automatic hanging device used in an automatic warehouse or the like is provided with a fishing member for holding a load and a piston for operating the fishing member as disclosed in Japanese Patent Application Laid-Open No. 7-330278. It is known that when approaching, a piston is actuated, and the luggage is clamped by a fishing member.

This type of hanging device is not necessarily suitable as a general-purpose hanging device because it has a piston mechanism, which increases the weight of the hanging device and increases the cost.

There is also known a device in which a clamp device is moved by a toggle link mechanism to clamp a load. However, since this type of hanging device employs a toggle link mechanism, the hanging device itself is vertically moved. Since the baggage becomes longer and larger, and the baggage is clamped by a strong tightening force, there is a problem that the baggage is deformed and cannot be used when lifting a soft baggage.

[0005]

As described above, the conventional hanging device is heavy in weight and costly, and the hanging device itself is large and is not always suitable for handling soft luggage. There was a problem that it was not.

The present invention solves the above-mentioned problems, and
An object of the present invention is to provide a hanging device that is small, lightweight, and can reliably handle any kind of luggage.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and comprises a pair of openable and closable gripping arms each having an upper end pivotally attached to a hanging bracket, and one end pivotally attached at an intermediate portion between the gripping arms. And a pair of links, the other ends of which are connected by a connecting shaft at the center, and the upper end of which is axially attached to the link, and the lower end of which extends to one side from vertically below the axially attached portion, and is attached to the upper surface of the load when the gripping arm is held. An operation lever having a contact guide portion for sliding contact and a regulating portion on the upper portion for regulating rotation in the direction of the contact guide portion;
It is a hanging tool provided with a restricting means for restricting the downward tilt of the link.

According to the present invention, a pair of links each having one end pivotally attached to the gripping arm and the other end pivotally connected to the connecting shaft,
An operation lever having a contact guide part that slides on the upper surface of the load is mounted on the shaft. The operation of the operation lever causes the gripping arm to clamp and release the load, so that the number of parts is small, small, lightweight and simple. With the device, it is possible to provide a hanger capable of automatically and securely holding and releasing a load.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is characterized in that a pair of openable and closable gripping arms each having an upper end pivotally attached to a hanging bracket, and one end pivotally attached at an intermediate portion of the gripping arm, A pair of links, the other ends of which are connected by a connection shaft at the center,
The upper end of the link is axially mounted, and the lower end extends to one side from vertically below the axially mounted portion, and the contact guide portion that slides on the upper surface of the load during the gripping operation of the gripping arm, and the upper portion restricts rotation in the direction of the contact guide portion. An operating lever having a restricting portion, and a restricting means for restricting downward tilting of the link, wherein the lifting device lowers the lifting device to the upper surface of the load when lifting the load. Then, when the operating lever comes into contact with the upper surface of the baggage, and when the lifting device is further lowered, the pair of left and right links are lifted up around the support shaft by the operating lever. The arm moves in the closing direction, the gripping arm is closed, the locking hook provided at the tip of the gripping arm is engaged with the locking hole of the load, and the load can be clamped. position It has an action that can be sent. During this operation, since the rotation of the upper portion of the operation lever toward the contact guide portion is restricted by the restriction portion, the upper portion of the operation lever rotates in the anti-restriction direction with the tilt of the link. Further, when releasing the load from the hanging device, after the load is conveyed to a predetermined position, if the lifting device is further lowered, the gripping arm slides down on the upper corner of the load and descends. Perform the operation in the direction, release the engagement between the locking hook and the hole for locking the luggage, and by this operation, the left and right links return to the horizontal state,
When the lifting arm is lifted in this state while keeping the gripping arm in the expanded state, the left and right links are locked by receiving the vertical force due to the weight of the operating lever while being restricted from tilting downward by the restricting means. So that it rises
At the time of the lifting movement of the hanging tool, the gripping arm has an operation capable of rising while maintaining the expanded state. As described above, the present invention has a configuration in which an operating lever having a contact guide portion that slides on the upper surface of a load is pivotally mounted on a pair of links that have one end pivotally mounted on the gripping arm and the other end pivotally connected by the connecting shaft. Thus, it is possible to provide a hanging device capable of automatically holding and releasing a load automatically and reliably with a small, lightweight, and simple device having a small number of parts.

[0010] According to a second aspect of the present invention, the restricting portion comprises:
It is characterized by an inclination restricting portion extending in the same direction as the contact guide portion, and a restricting pin provided laterally on the link and circumscribing the inclination restricting portion. , By providing a pin circumscribing this,
It has the function of restricting rotation of the operating lever in one direction by simple means.

According to a third aspect of the present invention, the restricting means is a restricting piece provided on the gripping arm and supporting the lower portion of the link, and has an operation of restricting the downward tilt of the link. .

The invention according to claim 4 is characterized in that a toggle link mechanism is provided between the hanging bracket and the upper end of the gripping arm, and has an action capable of increasing the clamping force by the gripping arm. (Embodiment) FIGS. 1A and 1B show an embodiment of the hanger of the present invention, wherein FIG. 1A is a front view, FIG.
(B), (c), and (d) show the luggage lifting operation process diagram of the hanging device shown in FIG. 1, and (a), (b), (c), and (d) show the luggage release operation process diagram. 4A and 4B show another embodiment of the hanger of the present invention, wherein FIG. 4A is a front view and FIG. 4B is a plan view.

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

In the drawing, reference numeral 1 denotes a hanging member, 2 denotes a pair of gripping arms supported by an upper shaft 6a so as to be openable and closable, and 3 denotes a locking member provided inside a lower portion of the gripping arm 2 and engaged with a side surface of a load. The hook 4 is provided at the upper end of the pair of gripping arms 2, and is a hanging metal fitting for holding the gripping arm 2 by the upper shaft 6 a.
Reference numeral 5 denotes an intermediate portion of the gripping arm 2, one end of which is supported by a support shaft 6b, and the other end of which is connected at the center by a connection shaft 6c provided vertically below the upper shaft 6a.
, 7 is an operating lever whose upper end is coaxially mounted on the left and right links 5a and 5b by a connecting shaft 6c, and 8 is a lower end of the operating lever 7 and is provided extending from one side vertically below the connecting shaft 6c. The contact guide portion 9 provided at the upper end of the operating lever 7 is an inclined portion, which is a restricting portion extending from the connecting shaft 6 in the same direction as the contact guide portion 8, and the contact portion 9 is provided laterally on the link 5a to operate. A regulating pin 11 circumscribing the inclined portion 9 of the lever 7 and regulating rotation of the operating lever 7 toward the contact guide 8 about the connecting shaft 6 c is provided inside the gripping arm 2, and is provided below the link 5. It is a regulation piece that prevents tilting to

That is, in the hanging device according to the above-described embodiment, a pair of gripping arms 2 provided with locking hooks 3 on the lower inner side are pivotally attached to the lower end of a hanging metal member 4 provided at the upper end of the hanging device. One end of each of the left and right links 5a and 5b is pivotally supported at an intermediate portion of the link 2, and the other end is connected at a center portion by a connecting shaft 6c, and is suspended below the center portion of the link 5 by the connecting shaft 6c. An operation lever 7 having a contact guide portion displaced to one side from the vertical lower side of the connecting shaft 6c at a lower portion and an inclined portion 9 inclined at the same direction as the contact guide portion 8 at an upper portion is axially mounted.
The link 5 a is provided with a regulating pin 10 circumscribing the inclined portion 9 of the operating lever 7 and a regulating piece 11 inside the gripping arm 2 for regulating the downward tilt of the link 5.

Next, an operation of lifting and releasing the load of the hanging device 1 according to the embodiment of the present invention will be described with reference to FIGS. In the figure, 13 is a load, 13a is the upper surface of the load, 14 is a locking hole provided on the side surface 13b of the load 13 and into which the locking hook 3 is inserted.

First, in FIG. 2 (a), the hanging tool 1 descends on the load 13 and the contact guide portion 8 of the operating lever 7 contacts the upper surface 13a of the load 13. Next, when the hanger 1 is further lowered, as shown in FIG. 2B, the support shaft 6b of the operating lever 7 moves relatively downward with respect to the connection shaft 6c,
The link bends into a mountain shape with the connecting shaft 6c at the top, and the lock of the link 5 is released. When the suspender is further lowered, the rotation of the operating lever 7 to the left in the figure is restricted by the restricting pin 10 circumscribing the connecting shaft 6c and the inclined portion 9.
As shown in (c), the operating lever 7 tilts with the inclination of the link 5a, and the contact guide portion 8 slides on the upper surface 13a of the load and moves beyond the center line defined by the upper shaft 6a and the connecting shaft 6c. I do. When the hanging tool 1 further descends, the force acting on the tip of the gripping arm 2 in the closing direction becomes larger than the force acting on the gripping arm 2 in the opening direction due to the weight of the operating lever 7 due to the weight of the gripping arm 2. As shown in (d), the tip of the gripping arm 2 moves in the closing direction due to its own weight, and the locking hook 3 at the tip of the gripping arm 2 is inserted into the locking hole 14 of the load 13 to remove the load 13. It is transported by a crane or the like.

Next, the operation of the hanging tool 1 for releasing the load will be described. When the luggage 13 is fixed to a predetermined place by a crane or the like and the hanging tool 1 is lowered, the inside of the gripping arm 2 becomes luggage 1
As shown in FIG. 3 (a), the gripping arm 2 is opened and the locking hook 3 and the luggage 13 are lowered.
Of the locking hole 14 is released.

Next, when the hanger 1 is further lowered, FIG.
As shown in (b), the holding arm 2 is further opened, and the support shaft 6b of the link 5 is displaced outward, so that the opening angle of the link 5 is reduced. On the other hand, since the contact guide portion 8 of the operating lever 7 slides on the upper surface 13a of the load 13 on the opposite side of the regulating pin 10, it is not restricted by the upper end regulating pin 10, and the gripping arm 2 is in FIG. As shown in link 5
Is expanded to the locked state in which is horizontal. When the lifting tool 1 is raised by a crane or the like in this state, the operating lever 7 hangs down from the link 5 by its own weight as shown in FIG. Further, when the link 5 is substantially horizontal, the link 5a, 5b has a force to push the link 5 downward via the connecting shaft 6c due to the link 5's own weight and the own weight of the operation lever 7.
, The movement of the gripping arm 2 in the closing direction due to the weight of the gripping arm 2 when the lifting tool 1 is lifted is regulated.

The links 5a, 5b during this operation
In order to maintain the locking action of the link 5 and restrict the downward tilt of the link 5, a restricting piece 11 is provided.
, A force that causes the operating lever 7 to tilt downward due to its own weight is applied, but is raised by the regulating piece 11 while maintaining a horizontal state. Therefore, when the lifting device is lifted, the gripping arm 2 operates in the closing direction to prevent the locking hook 3 from being re-engaged with the locking hole 14 of the load 13, and the lifting device 1 Release and rise.

FIG. 4 shows another embodiment of the present invention, in which a toggle link mechanism comprising a link 12 is provided on the upper part of the gripping arm 2, and the load provided by the gripping arm 2 is provided by providing the toggle link mechanism. 13 can be increased.

In the above embodiment, the operating lever 7
Is provided at the upper end portion thereof with a regulating pin 10 circumscribing, but the present invention is not limited to the above-described inclined portion, as long as it can regulate the rotation of the operating lever in one direction. The part 8 is preferably in the form of a roller.
What is necessary is just to be able to slide 3a. Also, the shaft on which the operating lever is mounted is not coaxial with the connecting shaft, and the left and right links 5a,
5b. Further, a regulating means for regulating the downward tilt of the link 5 is provided by a link 5
May be provided with a restricting piece that engages with the gripping arm 2, or a restricting means that restricts the downward tilt of the link 5 may be provided at the left and right link connecting portions. The downward tilt of the link 5 indicates that the connecting shaft 6c moves downward from a horizontal line connecting the support shafts 6b at both ends of the link 5.

[0023]

According to the present invention, a pair of links each having one end pivotally attached to a gripping arm and the other end pivotally connected by a connecting shaft,
By using a configuration in which an operation lever having a contact guide portion that slides on the upper surface of the load is pivotally mounted, the number of parts is small, small,
With a lightweight and simple device, it is possible to provide a hanging device capable of automatically and securely holding and releasing a load.

[Brief description of the drawings]

FIG. 1 (a) is a front view showing an embodiment of the hanging device of the present invention, and FIG. 1 (b) is a plan view.

2 (a), 2 (b), 2 (c) and 2 (d) are diagrams showing a lifting operation process of the lifting device of FIG. 1;

3 (a), 3 (b), 3 (c), 3 (d) are views showing a release operation process of the hanger of FIG. 1;

FIG. 4 (a) is a front view showing another embodiment of the hanger of the present invention, and FIG. 4 (b) is a plan view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hanging tool 2 Grasping arm 3 Locking hook 4 Hanging tool 5 Link 5a, 5b Left and right link 6a Upper shaft 6b Support shaft 6c Connecting shaft 7 Actuating lever 8 Contact guide part 9 Inclined part 10 Restriction pin 11 Restriction piece 12 Link 13 Luggage 13a Luggage upper surface 13b Luggage side surface 14 Locking hole

Claims (4)

[Claims] A pair of openable and closable gripping arms each having an upper end pivotally attached to a hanging bracket, and a pair of pivotal arms each having one end pivotally mounted at an intermediate portion of the gripping arm and the other end being coupled at a central portion by a coupling shaft. A link, an upper end of which is pivotally mounted on the link, a lower end of which is extended vertically to one side from below, and a contact guide part which slides on the upper surface of the load when the gripping arm is held, and an upper part which turns in the direction of the contact guide part. A lifting device comprising: an operating lever having a restricting portion for restricting the movement; and a restricting means for restricting a downward tilt of the link. 2. The restricting portion according to claim 1, wherein the restricting portion is a tilt restricting portion extending in the same direction as the contact guide portion, and a restricting pin laterally provided on the link and circumscribing the tilt restricting portion. Hanging equipment. 3. The hanging device according to claim 1, wherein the restricting means is a restricting piece provided on the gripping arm and supporting a lower portion of the link. 4. The hanger according to claim 1, wherein a toggle link mechanism is provided between the hanger and the upper end of the gripping arm.