JPH036637Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention is a container spreader used by being attached to a lift mechanism of a forklift truck, and the present invention is a twist lock that opens a twist lock pin provided on the container spreader to the container side. This invention relates to a mechanism for guiding a twist lock pin into a hole.

2. Description of the Related Art In general, a method for lifting a container on a forklift truck involves attaching a container spreader as an attachment to a lift mechanism and suspending the container via the container spreader. When lifting a container via a container spreader in this way, the method of suspending the container is to attach multiple twist lock pins that protrude downward from the container spreader to a long length on the ceiling of the container. The twist lock pin is engaged with the twist lock hole by inserting it into the circularly opening twist lock hole and rotating it through a 90 degree angle. In this method, the container is suspended by engaging the twist lock pin in the twist lock hole. Since the opening position cannot be seen from the driver's seat, the twist lock pin must be engaged using the twist lock hole opened in the rear wall of the container as a guide, which makes alignment very difficult. However, there is a problem in that the container may be damaged.

As a solution to such problems, a conventional method as shown in FIG. 5 and FIG. A method has been proposed in which the twist lock pin 3 is engaged with the twist lock hole 4 by sliding the container spreader C along the rear surface of the container spreader C and lowering the container spreader C.

Problems to be Solved by the Invention However, in the method of alignment using guide pieces as described above, alignment can be achieved against deviations in the front-back direction, but alignment can be achieved against deviations in the left-right direction. The alignment must be done using the installation position of the guide piece as a guide, and the guide piece obstructs the view, making it difficult to clearly see the installation position of the twist lock pin, making it difficult to obtain accurate alignment. There are still unresolved problems in this respect.

This invention is an attempt to improve the above-mentioned problems, and makes it possible to simultaneously align not only the longitudinal deviation but also the left-right deviation. In particular, the problem to be solved lies in ensuring that accurate alignment is obtained and that the operator is able to perform the alignment while visually confirming it directly from the driver's seat. The specific means and effects for solving the above problems are as follows.

Measures to solve the problem: A holder with a long hole in the vertical direction is vertically installed behind the twist lock pin, facing the twist lock pin that protrudes downward from the top frame of the frame, and the In order to extend and support the guide pin, the guide pin can be engaged with a twist lock hole opened vertically at the rear of the container, and can be moved up and down in the holder so as to be able to move up and down along the twist lock hole. Installed so that it can slide freely.

Function: By lowering the container spreader with the guide pin engaged with the twist lock hole that opens vertically at the rear of the container, the twist lock pin is accurately guided to the twist lock hole. can be obtained.

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

FIG. 1 is a drawing showing the entire forklift truck on which the container spreader according to the present invention is installed, where A is the forklift truck body;
B is a lift mechanism that is attached to the front part of the forklift truck main body A so that it can be tilted forward and backward; C is a container spreader that is attached to the lift mechanism B so that it can be raised and lowered as an attachment; Each container is shown suspended from the other end. The container D has a twist lock hole 4 in its ceiling and a twist lock hole 2 in its rear surface.

FIG. 2 is a perspective view showing the container spreader C in an enlarged state, and 1 indicates a frame. The frame 1 includes a top frame portion 1A, a bottom frame portion 1B, and side frame portions 1C and 1C connecting the top frame portion 1A and the bottom frame portion 1B.
It is formed into a substantially horizontally long rectangular shape. The top frame portion 1A is wider than the other frame portions (bottom frame portion 1B, side frame portion 1C), and is formed so that both left and right ends extend outward from the side frame portion 1C. Twist lock pins 3, 3 located near the edge
is installed facing downward. More specifically, the tips of the twist lock pins 3, 3 have an engaging piece 3a formed in a rectangular shape to correspond to the twist lock hole 4 formed in an oval shape on the ceiling surface of the container D, and have a pointed tip. It is formed into a conical shape and is provided so that it can be rotated through a 90 degree angle. Furthermore, guide mechanisms E according to the present invention are provided at both ends of the dome frame portion 1A, located near the rear edge thereof, so as to face the twist lock pins 3, 3 in the front and back directions. The guide mechanism E consists of a combination of a holder 5 bent in a U-shape and having an elongated hole in the vertical direction, and a guide pin 6 supported on the holder 5. On the other hand, it is suspended downward with its opening facing in the front-rear direction. Furthermore, the holder 5 is provided with a slit 5a along its curved surface. Further, the guide pin 6 is formed into a round bar shape with a large diameter portion 6a in its middle portion, and is attached to the holder 5.
In contrast, both front and rear ends protrude from the holder 5, and the large diameter portion 6a is fitted into the slit 5a so as to be slidable in the vertical direction.

Next, its effect will be explained.

With the container D in contact with the ground, the forklift truck moves forward to bring the container spreader C attached to the lift mechanism into contact with the rear of the container D, and at the same time, a twist lock is applied to the top frame 1A of the container spreader C. By engaging the guide pin 6 installed opposite the pin 3 with the twist lock hole opened at the rear of the container D, the twist lock pin 3 is vertically connected to the twist lock hole 4 opened on the ceiling surface of the container D. A state of concord is obtained through confrontation. Then, by lowering the container spreader C with the twist lock pin 3 and the twist lock hole 4 aligned vertically, the twist lock pin 3 can be moved forward, backward, left, and right relative to the twist lock hole 4. Accurate guidance can be achieved without causing positional deviation. In the above embodiment, the guide pin 6 is supported through the U-shaped holder 5, but the structure for supporting the guide pin 6 is not limited to this, and other supporting structures may be used. It is possible to select as appropriate.

Effects of the invention The invention is constructed as described above.
As mentioned above, a holder is installed vertically at the rear of the twist lock pin, and a guide pin is provided that can be raised and lowered by extending in the front and back direction relative to the holder, and the guide pin is placed in an oval shape on the rear of the container. By inserting the guide pin into the twist lock hole that opens in It has become possible to simultaneously correct the longitudinal and lateral deviations of the twist lock pin relative to the lock hole, thereby making it possible to accurately position the twist lock pin. In particular, the positioning is performed by lowering the container spreader using a twist lock hole opened at the rear of the container as a guide, allowing the operator to visually check the location from the operator's seat while positioning the container. This has made it possible to significantly improve the workability, especially when stacking containers in multiple stages.

[Brief explanation of the drawing]

Fig. 1 is a side view of a forklift truck equipped with a container spreader according to the present invention, Fig. 2 is a perspective view of the container spreader, Fig. 3 is an enlarged side view of the guide mechanism attachment part, and Fig. 4 is the same. FIG. 5 is a side view of a forklift truck equipped with a conventional container spreader, and FIG. 6 is a perspective view of the container spreader. A...Forklift truck body, B...Lift mechanism, C...Container spreader, D...Container, E...Guide mechanism, 1A...Top frame section, 1
B...Bottom frame part, 1C...Side frame part, 1...Frame, 2...Twist lock hole, 3...Twist lock pin, 3a...Engaging piece, 4...Twist lock hole, 5...... Holder, 5a...Slit, 6...
...Guide pin, 6a...Large diameter part.

Claims (1)

[Scope of utility model registration request] In a container spreader in which a twist lock pin is mounted downward on the top frame of the frame so as to be able to rotate through a 90 degree angle, a long hole is formed in the vertical direction at the rear of the twist lock pin. A holder is provided vertically and extends in the front and rear direction through the holder to support a guide pin. A guide mechanism for a twist lock pin in a container spreader, which is provided so as to be slidable vertically within the holder so as to be able to move up and down along a lock hole.