JPS6027104Y2 - Dump truck door - Google Patents

Description

[Detailed description of the invention] This invention has an upper frame so that the rear side of the dump truck's cargo box can be used as a sliding door, and the double door can be sufficiently closed and maintained during driving and when opening downward. This invention relates to a sliding door that can be removed to improve workability when loading and unloading.

Conventionally, in order to increase versatility, there are already existing dump trucks with a sliding door that opens at the bottom and flips up the rear of the cargo box, or a double door that opens to the left and right. However, when the main frame of the door body is fixed, the upper frame gets in the way when loading and unloading bulky cargo, resulting in poor work efficiency.However, when the main frame of the door body is removed, work efficiency is poor. However, the rear door of the dump truck has the disadvantage of weakening the support mechanism of the opening/closing door body, so the rear door of the dump truck can be expanded to make it easier to work, and the support of the sliding door is solid, making it possible to reliably transport cargo. was required.

The present invention answers that need.

To explain the embodiment of the present invention in detail with reference to the attached drawings, a swing door 1 which is supported and pivoted at both ends of the upper part and opened from below is arranged on the rear surface of a cargo box A of a dump truck, and a support frame 2 of the swing door is provided. The upper frame 3 is a separate body that can be removed with a fixing fitting 4, and the left and right vertical frames 5, 5 and the lower frame 6 are formed into an integrated frame, and the door body of the fan door is attached at one end to the left and right sides, respectively. A pair of double doors 7.7 are pivoted on vertical frames 5, 5, and the reference numeral 8 indicates double doors 7, 7.
9 is its mounting bracket, 10 is a suspension ring for the upper frame, B is the body of the dump truck, C is the wheel, and D is a lashing device for the sliding door support frame.

Next, to explain the state in which this sliding door is used, when traveling with cargo loaded in cargo box A, the upper frame 3 is attached to the support frame 2 of the sliding door.
are connected between the vertical frames with the bold of the fixing bracket 4, and the upper frame 3
A closing rod 8 is installed between the lower frame and the lower frame to prevent the cargo from opening, and the supporting frame 2 has both upper and lower side frames firmly connected to securely hold the sliding door 1. It is used to carry out transportation work by keeping the cargo closed and safely protecting it.
When the cargo to be loaded in the cargo box is heavy palletized cargo, etc., removing the upper frame 3 opens the upper part of the support frame 2 of the sliding door 1, eliminating any obstructions and eliminating the double door 7 of the sliding door 1. When the cargo box A is unfolded from side to side, the rear of the cargo box A is fully opened, and bulky cargo can be loaded and unloaded quickly and safely, greatly improving work efficiency.

In addition, when this sliding door is opened downward by removing the lashing device on the lower frame with the double door 7 closed, and pushing up the cargo box A, the cargo in the cargo box A will be dumped all at once. It is also an extremely useful and advanced technical device that can be used for many purposes, such as being able to unload the cargo and has excellent versatility.

[Brief explanation of drawings]

The accompanying drawings show examples of the present invention. Figure 1 is a front view of the sliding door, Figure 2 is a perspective view of the sliding door installed on a cargo box, and Figure 3 is an overview showing how it is used when installed on a dump truck. It is a diagram. 1...Finger door, 2...Support frame, 3...
...Top frame, 4...Fixing bracket, 5...
・Vertical frame, 6... Lower frame, 7... Double door, 8... Closing rod, 9... Mounting bracket, 1
゜...Hanging ring, A...Logging box, B...Curved car body, C...Curved wheel, D...Lashing device.

Claims (1)

[Scope of utility model registration request] A sliding door is installed on the rear of the dump truck's cargo box, and is supported at both ends of the top and opened from below. A dump truck fan door characterized in that the lower frame is an integral frame, and the door body of the fan door is a pair of double doors with each end pivoted to the left and right vertical frames.