Manual opening and closing device for the splash prevention frame

Abstract

There is no need to cover the upper part of the container with an upward sheet, eliminating the risk of falling from the upper part of the container and enabling it to be completed in a shorter time compared to the time required for the conventional sheet covering. Provided is a splash prevention frame opening and closing device. 【Solution means】The splash prevention frame opening and closing device of the present invention is for safely covering the splash prevention frame on the upper part of the container without passing through power. A chain sprocket 5 is attached to the input shaft 11 of the speed reducer 4 for power drive, and the chain sprocket is connected to another chain sprocket 6 provided at the lower part of the container by a chain 7, and the chain sprocket at the lower part of the container is rotated via a handle 9. The output shaft of the speed reducer is the same as the rotation shaft of the splash prevention frame, and by rotating the output shaft, the opening and closing of the splash prevention frame can be manually performed.

Description

Technical Field

[0001] The present invention relates to a method for opening and closing a scattering prevention frame for preventing the load from scattering from a container or the like.

Background Art

[0002] In a detachable container mainly for transporting industrial waste, a sheet is placed on the upper surface of the container during driving to prevent the contents from scattering. This sheet covering operation involves climbing onto the upper part of the container, covering the entire surface with the sheet, hanging a rope on the rope hooks installed around the container, and applying tension so that the sheet does not come off. On the other hand, in a dump truck for the same application, a hydraulic cylinder using the hydraulic pressure is used to open and close a scattering prevention frame installed on the upper part of the body by operating a switch in the driver's seat, driving a hydraulic pump through an electric motor using the electricity of the vehicle battery or a PTO (Power Take-Off device) on the transmission side. However, in a detachable container, since the container and the vehicle are separated, electricity and hydraulic pressure cannot be supplied. Therefore, the above-described sheet covering operation is essential. (

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Patent Document 5

Patent Document 6

Patent Document 7

Patent Document 8

Patent Document 9

Summary of the Invention

Problems to be Solved by the Invention

[0004] Mainly in the container of a dedicated vehicle for attaching and detaching containers, the operation of covering the container with a sheet for preventing scattering is a work at a height of about 2.3 m from the ground (3.6 m when mounted on the vehicle), which is very dangerous, and actually falling accidents have occurred. On the other hand, in the dump truck used for the same purpose, as described above, it is equipped with an opening and closing device for a scattering prevention frame that can be automatically opened and closed using electricity or hydraulics, and the scattering prevention frame can be opened and closed only by operating a switch in the driver's seat. On the other hand, since there is no power source in the container, a similar scattering prevention frame opening and closing device cannot be installed. Therefore, without using power, the scattering prevention frame is manually opened and closed to safely move the scattering prevention frame and solve the above-mentioned drawbacks.

Means for Solving the Problems

[0005] In the present invention, in conventional dump trucks, etc., in order to open and close the scattering prevention frame, a reduction gear is rotated via an electric motor. On the other hand, in the present invention, since the reduction gear that was rotated by the electric motor is rotated manually, a sprocket for chain is attached to the input shaft for attaching the electric motor, and the sprocket for chain is connected to another sprocket for chain arranged at the lower part of the container via a chain, and the rotation shaft of the sprocket for chain is rotated using a handle, whereby the reduction gear can be rotated manually to safely open and close the scattering prevention frame at the upper part of the container.

Effects of the Invention

[0006] As described above, in the method of manually rotating the speed reducer according to the present invention, since the opening and closing of the splash prevention frame can be manually performed without a power source, it is not necessary to hang an ascending sheet on the upper part of the container as in the prior art, and the risk of falling from the upper part of the container is eliminated, and it can be completed in a shorter time compared to the time required for the conventional sheet hanging.

Brief Description of the Drawings

[0007]

Figure 1

Figure 2

Figure 3

Figure 4

Modes for Carrying Out the Invention

[0008] The manual opening / closing device for a splash prevention frame according to the present embodiment is a device used by being attached to a container, and is characterized in that the splash prevention frame for a load such as industrial waste loaded in the container can be easily opened and closed manually without using power.

Examples

[0009] Hereinafter, examples will be described with reference to the accompanying drawings.

[0010] FIG. 1 is a side view of a container to which the splash prevention frame opening / closing device according to the present embodiment is attached. FIG. 2 is a front view thereof, FIG. 3 is a rear view thereof, and FIG. 4 is an enlarged view of the drive part of the opening / closing device.

[0011] As shown in FIG. 1, the splash prevention frame 1 according to the present embodiment has a bearing 3 attached to a shaft 2 in the long side direction, which is attached to the upper edge part of the container, and is rotatable around this shaft 2 as shown in FIGS. 2 and 3.

[0012] The front part of the shaft 2 in the direction of one long side is fixed coaxially with the output shaft 10 of the worm reducer 4.

[0013] Normally, the input shaft 11 of the worm reducer 4 is connected to an electric motor and rotated electrically. However, in the present invention, a sprocket 5 for a chain is attached to the input shaft 11 and is connected via a chain 7 to another sprocket 6 for a chain provided below the worm reducer 4.

[0014] The tip of the shaft 8 of the other sprocket 6 for a chain provided below the worm reducer 4 is shaped such that the attachment part 9a of the handle 9 can be attached.

[0015] The number of teeth of the sprocket 6 for a chain is made less than that of the sprocket 5 for a chain to reduce the rotational force of the handle 9, thereby achieving speed reduction.

[0016] By rotating the shaft 8 with the handle 9, the sprocket 5 for a chain of the upper worm reducer 4 is rotated, and the shaft 2 rotates with the speed and operating force reduced by the worm reducer 4, enabling the upper part of the container to be safely covered by the splash prevention frame.

Explanation of Reference Numerals

[0017] 1 Splash prevention frame 2 Shaft 3 Bearing 4 Worm reducer 5 Sprocket for chain 6 Sprocket for chain 7 Chain 8 Shaft 9 Handle 9a Attachment 10 Output shaft 11 Input shaft

Claims

【Claim 1】 In the case of a vehicle dedicated to attaching and detaching a container, etc., since the container separates from the vehicle, it is not possible to attach an automatic opening and closing device for the splash prevention frame using a battery power source or the like like a dump truck with the container alone. Therefore, for splash prevention, an operator climbs onto the upper part of the container and performs a sheeting operation. A splash prevention frame opening and closing device characterized by eliminating this sheeting operation and being able to manually open and close a splash prevention frame similar to that of a dump truck.

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