JP2501479Y2 - Container spreader container stopper - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container stopper for aligning a twist lock pin with a twist lock hole of a container in a container spreader for loading and unloading a container mounted on a forklift truck.

[0002]

2. Description of the Related Art Generally, as shown in FIG. 13, when a forklift truck 9 is used to carry a container, a container spreader 91 is used as an attachment. The container spreader 91 is provided with a twist lock pin 91 for engaging the twist lock hole 80 of the container 8.
1 and a container stopper 912 for aligning the two. These are container spreaders 91
It is disposed in the twist lock box 910. Figure 1
4 shows another mode of the container spreader 92 having a similar container stopper 912. While the container spreader 91 lifts the container 8 at two points, the container spreader 92 is
The containers 81 and 82 are lifted at four points. In the figure, F indicates the forward direction of the forklift truck 9.

By the way, in recent years, as shown in FIG. 14, two types of large and small containers 81 and 8 having different width dimensions are used.
I started to use 2. These containers 8
1 and 82, the distances from the twist lock holes 80 to the side surfaces of the containers 81 and 82 are different (indicated by D1 and D2 in the figure). Therefore, in the conventional container spreader 92, the mounting position of the container stopper 912 is set according to the container 81 having a large width.

[0004]

However, in the conventional container stopper of the container spreader, it is difficult to position the twist lock pin with respect to the container having a small width dimension, and it requires skill to position the twist lock pin. This point will be described with reference to FIG. As mentioned above,
The container stopper 912 is a container 8 with a large width.
It is attached according to 1. Therefore, the container 8
With respect to 1, the twist lock pin 911 can be aligned by merely bringing the container stopper 912 into contact with the side surface thereof. On the other hand, in the container 82 having a small width, a gap C is formed between the side surface of the container 82 and the container stopper 912. Therefore, the container stopper 912 does not function as a stopper. Therefore, the operator has to perform the alignment work by intuition, which lowers the workability.

As one of the means for solving the above problems, for example, there is a container stopper described in Japanese Utility Model Laid-Open No. 63-11498. The container stopper is arranged so as to be slidable in the front-rear direction with respect to the container spreader, and is normally biased forward by a spring. However, in this method, the spring bends due to the collision between the container and the container stopper. Therefore, although the stopper function is fulfilled, the difficulty of alignment cannot be eliminated. This invention is, according view of the conventional problems, can easily align the work of the twist lock pin and the twist
Make sure the lock pin is stable against the twist lock hole.
Ru can be positioned, is intended to provide a container stopper of the container spreader.

[0006]

The present invention relates to a container spreader having a twist lock pin projecting from a twist lock box and a container stopper for aligning the twist lock pin with a twist lock hole of the container. stopper, a stopper placket fixed to twist lock boxes, a horizontal shaft which is mounted horizontally against the said stopper bracket, the
It consists of a rotation stopper rotatably attached to the horizontal spindle , and the rotation stopper is installed around the horizontal spindle.
A container stopper of a container spreader having a plurality of abutment surfaces that rotate on a flat axis and hold different set intervals between the twist lock pin and the twist lock pin.

[0007] Most notably in the present invention is to fitted with a rotational stopper having a plurality of abutment surfaces rotatably horizontal axis against the stopper bracket. The contact surface is for contacting the side surface of the container when the twist lock hole and the twist lock pin are aligned. Then, when the rotation stopper is horizontally rotated to bring the contact surface into contact with the side surface of the container, different set intervals are maintained between the contact surface and the twist lock pin. . This setting interval refers to the interval set between the twist lock pin and the container stopper in order to align the twist lock pin in correspondence with each container size when using multiple types of containers with different width dimensions. Say. As the means for forming the contact surface, the rotation stopper is formed in a polygonal shape in cross section, and the contact surface is provided on the surface of the rotation stopper (see each embodiment). There is a method in which the bosses are radially provided and a contact surface is provided on the tip surface of each boss. All of these differ in the distance from the rotation center of the rotation stopper to each contact surface.

As the driving means of the rotation stopper, a method of transmitting the rotational force of the motor to the rotation stopper by a chain or a belt (see FIGS. 1 and 2), a method of directly rotating the rotation stopper by a motor, a rotary solenoid, or the like. (See FIGS. 4 and 5). It is desirable to use a stepping motor as this motor.
This enables accurate positioning. It is also possible to manually rotate the rotation stopper. Further, as another rotation stopper driving means, a method of rotating the rotation stopper by a cylinder via a link (see FIGS. 6 to 8) and a method of rotating the rotation stopper by a motor via a link (FIG. 9). And FIG. 10).

A method of directly supporting the rotation stopper on the twist lock box is also conceivable. However, in this method, a cantilever structure is adopted, and when the rotation stopper is abutted against the container, a large external force is applied to the horizontal support shaft of the rotation stopper. Moreover, in this method,
The rotation stopper gets in the way, and it is not possible to secure the front view. Furthermore, it is difficult to replace the rotation stopper. On the other hand, according to the method of the present invention, since the rotation stopper is attached to the stopper bracket, it is possible to construct a strong both-ends supporting structure. In addition, the stopper bracket does not hinder the forward view. Furthermore, the rotation stopper can be easily replaced.

[0010]

In the present invention, when the twist lock pin is aligned with a container having a certain width, the rotation stopper is rotated according to the width of the container. As a result, the distance from the center of rotation of the rotation stopper to the contact surface depends on the width dimension of the container. The distance from the contact surface to the twist lock pin is the set distance according to the width dimension of the container. Therefore, the forklift truck is moved forward to bring the contact surface into contact with the side surface of the container. As a result, the twist lock pin is aligned. Then, insert the twist lock pin into the twist lock hole.

When the twist lock pin is aligned with a container having a width different from that of the container, the rotation stopper is rotated according to the width of the container. As a result, the distance from the center of rotation of the rotation stopper to the contact surface depends on the width dimension of the container. The distance from the contact surface to the twist lock pin is the set distance according to the width dimension of the container.
Therefore, similarly to the above, the contact surface is brought into contact with the side surface of the container, and the twist lock pin is inserted into the twist lock hole. The important point here is that
The rotation stopper is attached to the stopper bracket.
It is attached so that it can rotate with respect to the horizontal spindle that is attached in the horizontal direction.
And the rotation stopper around the horizontal support shaft.
Rotate the horizontal axis to maintain the above different set intervals
It is configured. Therefore, on the side of the container
Set the width of the contact surface of the rotation stopper to be contacted to an arbitrary size.
Can be wide. Therefore, rotate to the side of the container
When the abutting surfaces of the stopper are brought into contact with each other, the two contact widely
Then turn into a stable state and twist the twist lock pin.
Positioning can be reliably and stably performed with respect to the trocar hole. This
As described above, according to the present invention, the work of aligning the twist lock pin can be easily performed , and the twist lock pin can be easily adjusted.
Position the cup pin securely and securely with respect to the twist lock hole.
We can provide a container stopper for the container spreader that can be decided .

[0012]

Embodiment 1 A container stopper of a four-point lifting type container spreader according to Embodiment 1 of the present invention will be described with reference to FIGS. As shown in FIGS. 1 and 3, the container spreader of this example includes a twist lock pin 911 protruding from a twist lock box 910, and a container 81, 8.
It has the container stopper 1 for aligning the twist lock pin 911 with respect to the twist lock hole 80 of 2. As shown in FIGS. 1 and 2, the container stopper 1 includes a stopper bracket 11 fixed to a twist lock box 910 and a stopper bracket 11 which is opposed to the stopper bracket 11 .
The horizontal support shaft 120 and the horizontal support shaft 1 mounted horizontally
It comprises a rotation stopper 12 rotatably attached to 20 . As shown in FIGS. 1 and 3, the rotation stopper 12 is rotated about the horizontal support shaft 120 by a horizontal axis so that the rotation stopper 12 and the twist lock pin 911 have different set intervals L1, L.
It has a plurality of contact surfaces 121 and 122 for holding the two.

As shown in FIGS. 1 and 2, the stopper bracket 11 is extended downward from the lower surface of the twist lock box 910.
The rotation stopper 12 is provided between the lower end portions of the horizontal support shaft 12
It is laid horizontally so that it can rotate about the horizontal axis . The sprocket 16 is pivotally supported on the horizontal support shaft 120 of the rotation stopper 12. Also, twist lock box 9
A motor 13 is housed in the motor 10.
The sprocket 14 is rotatably supported on the output shaft 130. A chain 15 is stretched between the sprockets 14 and 16.

The rotation stopper 12 is formed in a rectangular parallelepiped. The rotation stopper 12 has two types of contact surfaces 121 and 122 as shown in FIGS. The abutting surface 121 has a width corresponding to the container 81 having a large width.
This is for holding a set interval L1 between the twist lock pin 911 (FIG. 3). Therefore, the distance between the horizontal support shaft 120 of the rotation stopper 12 and the contact surface 121 is set to A1. In addition, the contact surface 122 has a twist lock pin 91 depending on the container 82 having a small width.
This is for holding the set interval L2 between the first and second (FIG. 1). Therefore, the horizontal support shaft 12 of the rotation stopper 12
The distance between 0 and the contact surface 122 is set to A2.
Others are the same as the above-mentioned conventional example.

Since the container stopper 1 of the container spreader of this embodiment is constructed as described above, it has the following effects. That is, when the twist lock pin 911 is aligned with the container 81 having a large width, as shown in FIG.
Turn 21 forward. At this time, the distance between the contact surface 121 and the horizontal support shaft 120 as the rotation center is A1. The distance from the corresponding contact surface 121 to the twist lock pin 911 is the container 8 having a large width.
The set interval L1 corresponds to 1. This setting interval L
1 is equal to the distance D1 from the twist lock hole 80 to the side surface of the container 81.

Therefore, the forklift truck is moved forward to bring the contact surface 121 into contact with the side surface of the container 81. As a result, the twist lock pin 911 is aligned. Here, the rotation stopper 12 is the horizontal support shaft 1
Both ends of the stopper bracket 11 are supported by 20. Therefore, the rotation stopper 12 can firmly receive the impact at the time of contact. Moreover, FIG.
As shown in FIG. 5, since a space is formed between the stopper brackets 11, the front view is good. Therefore, the twist lock pin 911 has good visibility. Furthermore, the rotation stopper 12 can be easily replaced. After that, the twist lock pin 911 is inserted into the twist lock hole 80, and the container is loaded.

On the other hand, when the twist lock pin 911 is aligned with the container 82 having a small width, the motor 13 is operated to rotate the rotation stopper 12 by 90 degrees as shown in FIGS. Let At this time, the output of the motor 13 is transmitted to the horizontal support shaft 120 of the rotation stopper 12 via the output shaft 130, the sprocket 14, the chain 15, and the sprocket 16. Thus, when the rotation stopper 12 is rotated 90 degrees, the distance between the contact surface 122 and the horizontal support shaft 120 is A2. The distance from the contact surface 122 to the twist lock pin 911 is a set distance L2 corresponding to the container 82 having a small width. This setting interval L2 is
It is equal to the distance D2 from the twist lock hole 80 to the side surface of the container 82.

Therefore, the forklift truck is moved forward to bring the contact surface 122 into contact with the side surface of the container 82. As a result, the twist lock pin 911 is aligned. Then, the twist lock pin 911 is inserted into the twist lock hole 80. Furthermore, in this example
As for the rotation stopper 12,
It is rotatably attached to the horizontal support shaft 120 installed in the horizontal direction.
It is attached. The rotation stopper 12 is the horizontal support shaft 1
Rotate the horizontal axis around 20 and set the above interval L1 or L
Hold 2 Therefore, the side surface of the container 82 is not touched.
The width of the contact surface 122 of the rotation stopper 12
It can be wide. Therefore, the side of the container 82
When the contact surface 122 of the rotation stopper 12 is brought into contact with the surface,
When the two are in wide contact with each other and are in a stable state,
Secure the lock pin 911 to the twist lock hole 80.
Very stable positioning is possible. As described above, according to the container stopper 1 of the present embodiment, the work of aligning the twist lock pin 911 can be easily performed , and the twist lock pin 911 can be easily aligned.
Secure the lock pin 911 to the twist lock hole 80.
Stable positioning . Further, the container stopper 1 has excellent durability due to the support structure at both ends. It also has excellent forward visibility and maintenance. Further, since the rotation stopper 12 can be automatically rotated by the motor 13, the operator can easily position it on the driver's seat according to the type of container.

Embodiment 2 The container stopper 2 of this embodiment will be described with reference to FIGS. 4 and 5. In this example, instead of the motor 13, the sprockets 14 and 16, and the chain 15 shown in the first embodiment, a rotary solenoid 20 is attached to the stopper bracket 11 so as to be connected to the horizontal support shaft 120. Others are the same as in the first embodiment.

Since the container stopper 2 of this embodiment is constructed as described above, the rotary solenoid 20 is excited during use. As a result, the rotation stopper 12 rotates 90 degrees, and the set intervals L1 and L2 between the twist lock pin 911 and the contact surfaces 121 and 122 are switched. Therefore, the same effect as that of the first embodiment can be obtained. A stepping motor may be used instead of the rotary solenoid 20.
It is also possible to directly turn the rotation stopper 12 by hand without using these rotation drive systems.

Embodiment 3 The container stopper 3 of this embodiment will be described with reference to FIGS. In this example, a link mechanism is used instead of the rotary drive system such as the rotary solenoid 20 shown in the second embodiment. That is, as shown in FIG. 6, the rotation stopper 1
Pins 31 are provided at the corners of the protrusion 2. A link 34 is rotatably attached to the twist lock box 910 by a support shaft 32. An elongated hole 340 is provided at the lower end of the link 34, and the pin 31 is inserted into the elongated hole 340. On the other hand, the upper end of the link 34 is connected to the rod portion 350 of the cylinder 35 by the pin 33. The bottom portion of the cylinder 35 is pivotally attached to the twist lock box 910. Others are the same as those in the second embodiment.
Is the same as.

Since the container stopper 3 of this example is constructed as described above, it exhibits the following operational effects. That is,
When the rotation stopper 12 is rotated, as shown in FIG. 6, when the contact surface 122 faces forward,
The rod portion 350 of the cylinder 35 is extended. By this,
After the process shown in FIG. 6 to FIG.
Rotate once. Then, the contact surface 121 of the rotation stopper 12
Is facing forward. On the other hand, when the rod portion 350 is contracted, the rotation stopper 12 rotates in the opposite direction by 90 degrees through the process reverse to the above. Thus, also in this example, the same effect as that of the first embodiment can be obtained.

Embodiment 4 The container stopper 4 of this embodiment will be described with reference to FIGS. 9 to 12. Also in this example, as in the third embodiment,
It uses a link mechanism. That is, instead of the sprockets 14 and 16 and the chain 15 shown in the first embodiment, the disk 45, the link 43, etc. are used. The disk 45 is supported by the output shaft 130 of the motor 13. The disk 45
A pin 42 is provided at a position eccentric to the output shaft 130. On the other hand, the rotation stopper 12 has its horizontal support shaft 1
A pin 41 is provided at a position eccentric from 20. Further, the stopper bracket 11 is provided with an arc-shaped elongated hole 44 extending over a 90-degree angle along the rotation locus of the pin 41,
The pin 41 is inserted into the elongated hole 44. A link 43 connects the pins 41 and 42. Others are the same as in the first embodiment.

Since the container stopper 4 of this embodiment is constructed as described above, it exhibits the following operational effects. That is,
When aligning the twist lock pin 911 with respect to the container 82 having a small width, as shown in FIGS.
The motor 13 is rotated counterclockwise as shown in FIG.
The output of the motor 13 is the output shaft 130, the disk 45,
It is transmitted to the pin 41 via the pin 42 and the link 43. As a result, the pin 41 moves along the arc-shaped long hole 44, and the rotation stopper 12 is rotated 90 degrees counterclockwise.

On the other hand, when the twist lock pin 911 is aligned with the container 81 having a large width, the motor 13 is rotated clockwise as shown in FIGS. As a result, the pin 41 moves along the long hole 44, and the rotation stopper 12 is rotated clockwise by 90 degrees. Thus, also in this example, the same effect as that of the first embodiment can be obtained.

[Brief description of drawings]

FIG. 1 is an explanatory view of a container stopper of a container spreader according to a first embodiment, which is a side view of essential parts of the container spreader when handling a container having a small width dimension.

FIG. 2 is a rear view of the main part of the container spreader in the same case as in FIG.

FIG. 3 is an explanatory view of the container stopper according to the first embodiment and is a side view of a main part of the container spreader when handling a container having a large width.

FIG. 4 is a side view of essential parts of a container spreader including a container stopper according to a second embodiment.

FIG. 5 is a rear view of the main part of the container stopper according to the second embodiment.

FIG. 6 is an explanatory view of a container stopper of the container spreader according to the third embodiment, which is a side view of essential parts when handling a container having a small width dimension.

FIG. 7 is an operation explanatory view of the container stopper according to the third embodiment.

FIG. 8 is an explanatory view of the container stopper according to the third embodiment, and is a side view of essential parts when handling a container having a large width.

FIG. 9 is an explanatory view of a container stopper of the container spreader according to the fourth embodiment, which is a side view of essential parts when handling a container having a small width dimension.

FIG. 10 is a rear view of the main part of the container spreader in the same case as in FIG.

FIG. 11 is an explanatory view of the container stopper according to the fourth embodiment and is a side view of a main part when handling a container having a large width dimension.

FIG. 12 is a rear view of the main parts of the container spreader in the same case as in FIG.

FIG. 13 is a side view of a forklift truck equipped with a conventional container spreader.

FIG. 14 is a side view of a main part of another conventional container spreader.

[Explanation of symbols]

 1. ． ． Container stopper, 11. ． ． Stopper bracket, 12. ． ． Rotation stopper, 121, 122. ． ． Abutment surface, 13. ． ． Motor, 15. ． ． Chain, 2. ． ． Container stopper, 20. ． ． Rotary solenoid, 3. ． ． Container stopper, 34. ． ． Link, 35. ． ． Cylinder, 4. ． ． Container stopper, 43. ． ． Link, 80. ． ． Twist lock hole, 81, 82. ． ． Container, 910. ． ． Twist lock box, 911. ． ． Twist lock pin, L1, L2. ． ． Setting interval,

Claims (1)

(57) [Scope of utility model registration request] 1. A container spreader having a twist lock pin projecting from a twist lock box and a container stopper for aligning the twist lock pin with a twist lock hole of the container, wherein the container stopper is a twist lock. The stopper bracket fixed to the box and the stopper bracket
To the horizontal support shaft and the horizontal support shaft
And a rotatably mounted rotation stopper, which rotates about the horizontal support shaft.
Holding a different set spacing between the twist lock pin Te, container stopper of the container spreader, characterized in that it comprises a plurality of abutment surfaces.