JPH0682097U - Container spreader - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a container spreader having a function useful for assembling a twist lock device, maintenance work, and protection of hydraulic piping and the like. [Structure] In a wing type container spreader in which a twist lock strut 3 is erected at each tip of the left and right telescopic rails 2, and a twist lock device 4 is provided at an upper end of each twist lock strut 3, a twist lock strut 3 is provided. The work step 14 of the twist lock device 4 is set at a substantially intermediate portion in the vertical direction on the rear surface side. In addition, a guard grip 15 is formed on the inner surface of the twist lock column 3 in a projecting shape for getting on and off the step 14 and for protecting the hydraulic pipe 10 and the like.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a container spreader mounted on a forklift and used for cargo handling of a container, and more particularly, to an improvement of a wing type container spreader in which twist lock struts are erected at the ends of left and right telescopic rails.

[0002]

[Prior art]

 As shown in the schematic view of FIG. 5, the wing-type container spreader has a pair of left and right telescopic rails 32 slidably fitted in a rail holder 31 as a spreader body which is mounted so as to be able to move up and down along a mast of a forklift. In addition, twist lock columns 33 are erected on the respective tips of the telescopic rails 32, and a twist lock device 34 is provided on the upper ends of the twist lock columns 33.

As shown in FIG. 5, the twist lock device 34 includes a twist lock box 36 having a cover 35 that can be detached or opened and closed, and a twist lock box 36 that is vertically rotatably installed in the twist lock box 36 so as to be vertically movable. It is composed of a twist lock pin 37 which can be engaged with and disengaged from the engagement hole of the lock pin, a twist lock cylinder 38 for actuating the lock pin housed in the twist lock box 36, and a limit switch 39 for confirming the lock pin actuation. There is. The electrical wiring 41 for the hydraulic pipe for the twist lock cylinder 38 and the limit switch 39 or for the lamp 40 arranged on the side surface of the twist lock box 36 is provided on the inner side surface of the twist lock strut 33 (the left and right twist lock strut are opposed to each other). Layout side).

[0004]

[Problems to be solved by the device]

 However, in the conventional container spreader described above, since the twist lock device 34 is generally more than the human height (about 1800 mm) from the top surface of the rail, a stepladder is indispensable for its assembly and maintenance work. It was Further, as shown in FIG. 6 and FIG. 7, when the twist lock support column 33 is approached while the container C is being loaded and the left and right alignment of the twist lock support column 33 with respect to the container C is incomplete, the inner side surface of the twist lock support column 33 is approached. The container C may slip into the container, which may damage the hydraulic piping and the electric wiring line 41.

In view of the above-mentioned problems, the present invention provides a container spreader having a function that is useful for assembling a twist lock device, maintenance work, and protection of hydraulic piping and the like. To do.

[0006]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention is configured as follows. That is, a twist spreader is installed upright at each end of the left and right telescopic rails, and a container spreader equipped with a twist lock device is provided at the upper end of each of the twist lock mounts. The work step of the twist lock device is set on the inner side of the twist lock device, while a guard grip is provided on the inner side surface of the twist lock strut in a projecting shape for getting on and off the step and protecting the pipe. Is.

[0007]

[Action]

 In the container spreader according to the present invention configured as described above, the step set on the twist lock column is used for assembling and maintenance work of the twist lock device, and the guard grip is used for getting on and off the step. It Moreover, the gart grip that extends to the inner surface side of the twist lock strut suppresses slipping of the container to the inner surface side of the support column when approaching it while misaligning the left and right with respect to the container.

[0008]

【Example】

 Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. As shown in the simplified front view of FIG. 3 and the simplified side sectional view of FIG. 4, the wing-type container spreader includes a rail holder 1 extending horizontally in the left and right directions as a spreader body, and the rail holder 1 is not shown. It is attached to a lift bracket that can move up and down along the mast of a forklift truck so that it can be side-shifted. A pair of left and right telescopic rails 2 are slidably fitted into the rail holder 1, and twist lock columns 3 are provided upright at the tip ends of the telescopic rails 2. A twist lock device 4 is provided at the upper end of each of the twist lock columns 3.

As shown in FIGS. 1 and 2, the twist lock device 4 is provided with a twist lock box 5 fixed to the upper end of the twist lock column 3, and vertically rotatably provided on the twist lock box 5. A twist lock pin 6 that can be engaged with and disengaged from the engagement hole of the container C, a twist lock cylinder 7 for operating the twist lock pin 6, a limit switch 8 for confirming pin operation, and the like. The twist lock cylinder 7 and the limit switch 8 are housed in the twist lock box 5, and are hidden by the detachable or openable cover 9 in the twist lock box 5.

The electrical wiring 10 for the twist lock cylinder 7 and the electrical wiring 10 for the limit switch 8 or for the ramp 12 (hereinafter collectively referred to as hydraulic piping, etc.) is The layout is arranged along the inner side surface side of the twist lock strut 3 (opposite side of the left and right twist lock strut 3). The hydraulic pipe 10 and the like are guided by a power track 11 arranged on the upper surface side of the telescopic rail 2 so as to correspond to the telescopic operation of the telescopic rail 2. As shown in FIG. 2, the lamp 12 is attached to the twist lock box 5 via a bracket 13, and is arranged on the inner side surface side of the twist lock column 3.

In the wing type container spreader having the above-described structure, the twist lock support column 3 is formed with a step 14 for the work table of the twist lock device 4. In the present embodiment, as shown in FIGS. 1 and 2, the lower rear surface side of the twist lock column 3 is entirely projected rearward so that the upper surface of the projection 14 serves as a step 14. Therefore, the step 14 is set at a substantially middle portion in the vertical direction of the twist lock column 3, and preferably a height suitable for an operator on the step 14 to handle the twist lock cylinder 7 and the limit switch 8. Is set to.

When getting on and off the step 14, the upper surface of the telescopic rail 2 or the rail holder 1 can be used as the first step, but the height from the upper surface of the telescopic rail 2 to the step 14 becomes too high. In that case, it is desirable to set an auxiliary step on the twist lock column 3 in the middle between the telescopic rail 2 and the step 14.

On the other hand, a guard grip 15 is formed on the inner surface side of the twist lock column 3 in a projecting shape to assist in getting in and out of the step 14. The guard grip 15 in this embodiment is formed by bending a bar material into a substantially U-shape in a plane, and by welding or the like with the front end surface thereof positioned so as to be aligned with the front end surface of the twist lock column 3. It is fixed. The hydraulic pipes 10 and the like are piped through the U-shaped space of the gart grips 15, so that the gart grips 15 also serve as protective members for the hydraulic pipes 10 and the like.

The container spreader according to the present embodiment is configured as described above. Therefore, when the twist lock device 4 is assembled or the maintenance work is performed, the worker is set on the twist lock column 3. The work can be performed by riding on the step pedestal 14. In this case, the worker can easily get on and off the step 14 by using the guard grip 15.

On the other hand, when loading and unloading the container, as shown in FIGS. 3 and 4, when approaching while the left and right alignment with the container C is incomplete, the container C is positioned on the inner side surface side of the twist lock support column 3. Even if slipping is attempted, the guard grip 15 comes into contact with the vicinity of the upper portion of the side surface of the container C to suppress the slipping. As a result, it is possible to prevent the container C from directly interfering with the hydraulic pipe 10 and prevent damage to them.

In the present embodiment, the step 14 is set on the rear surface side of the twist lock strut 3, but the setting portion is not limited to this, except for the front surface which is the surface facing the container C. If so, it does not matter. Further, the guard grip 15 is not limited to the planar U-shape shown in the drawing, but can be appropriately changed as necessary.

[0017]

[Effect of device]

 As described in detail above, according to the present invention, the step and guard grip set on the twist lock column can be used to easily perform the assembly work or maintenance work of the twist lock device, and the guard grip can be hydraulically operated. By using it as a protective member for pipes and the like, it is possible to prevent damage accidents to hydraulic pipes and the like due to operation mistakes during container handling.

[Brief description of drawings]

FIG. 1 is a perspective view around a twist lock strut of a container spreader according to an embodiment of the present invention.

FIG. 2 is a perspective view of the vicinity of a twist lock strut similarly shown in a different direction.

FIG. 3 is a simplified front view of the wing type container spreader of the present embodiment.

FIG. 4 is a schematic side sectional view of the same.

FIG. 5 is a simplified front view showing a conventional wing type container spreader.

FIG. 6 is a schematic side sectional view of the same.

FIG. 7 is a perspective view showing the vicinity of a conventional twist lock strut.

[Explanation of symbols]

 1 ... Rail holder 2 ... Telescopic rail 3 ... Twist lock column 4 ... Twist lock device 6 ... Twist lock pin 10 ... Hydraulic piping etc. 14 ... Step 15 ... Guard grip

Claims (1)

[Scope of utility model registration request] 1. A container spreader in which twist lock columns are erected at respective end portions of left and right telescopic rails, and twist lock devices are provided at upper ends of the twist lock columns. A container spreader in which a work grip of the twist lock device is set on the inside of the twist lock device, and a guard grip for getting on and off the foot mount and protecting the pipe is formed on the inner surface of the twist lock strut in an extended shape.