JPH072372Y2 - Ladder loading device for truck with hood - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a ladder loading device for a hood truck that is used for loading a ladder at a fixed position in the hood of a hood truck for telephone wiring work or the like.

[Prior Art] Conventionally, when loading a ladder on a truck with a hood, the ladder cannot be stored in the hood because the ladder is longer than the hood of the truck. Therefore, the ladder was loaded on the hood.

[Problems to be solved by the invention] In this case, since the hood is high and it is difficult for one person to load and unload,
The fact is that they were piled up on the hood by multiple people and fixed with a string, etc., which is a problem in terms of work efficiency and ensuring safety.

This is especially true when the weather is rough, such as on rainy days or windy days, or at night.

In this case, the present invention is to provide a ladder loading device for a truck with a hood that is effective and suitable for solving the above-mentioned conventional problems.

[Means for Solving the Problems] To solve the above-mentioned problems, a ladder loading device for a truck with a hood according to the present invention relates to a ladder receiving structure in which a left and right width is slightly larger than a ladder width in a front portion on a truck bed with a hood. By mounting the parallel receiving rollers with different front heights on the front and back so that they can rotate freely, and hooking a hook metal fitting with a lock for hanging a ladder step on the ceiling of the rear part of the hood frame, by adopting the above configuration means To be achieved.

[Operation] Since this measure has taken the above-mentioned means, the ladder having the upper part temporarily placed on the freely rotatable front-rear parallel receiving roller is pushed up and slid so that it can be loaded with a small force, and is suspended to the ceiling part at the rear of the hood frame. The stepped rail under the ladder is hooked on the hook metal fitting with the lock that can be locked with one touch to improve work efficiency and ensure safety, and make it possible to carry out the loading and unloading work of the ladder by one person.

[Embodiment] An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view taken along the line II of FIG. 2 before the ladder of this embodiment is loaded, and FIG. 2 is a side view of the same after loading.

In the figure, 1 is a truck, 2 is a luggage carrier, 3 is a hood frame, 4 is a hood, and 5 is a ladder receiving structure that is constructed by being offset to the left side of the front of the luggage carrier 2 and shown in FIGS. 3 (a) and 3 (b). As shown in Fig. 5, the left side structure in which the horizontal rods 10 and 11 are connected in multiple stages between the front high columns 6 and 7 and the rear low columns 8 and 9
12 and the right saddle structure 13 are connected to each other with a gap larger than the width α of the ladder α, and connect them to each other in a multi-tiered manner with 14 groups of rods. And the left and right rear low columns 8 and 9 are supported by shafts 17 and 18 so that they can rotate freely, and front and rear receiving rollers 15 are provided at a position higher than the rear receiving roller 16, and 19 is a rear portion. The lock hooks are attached to the left side and attached to the ceiling 3a of the hood frame 3 by attaching bolts 25 and 26 and nuts 27 and 28 to the upper ends of the parallel hook rods 20 and 21 and the supporting suspension rod 22 with the mounting brackets 23 and 24, respectively. As shown in FIGS. 4 (a), (b), and (c), the lower end of the supporting suspension rod 22 has a lower end which is connected between the intermediate portions of the left and right parallel hook rods 20 and 21, and a bolt screw 30 at the center. And the nut 31 and rotatably attached to the inside of the lower part of the right hook rod 21 by the pivot pin shaft 32 and pulled to the lower end of the retaining rod 29 and the spring hook hole 33. Right hook rod 21 by KaiCho the coil spring 34
A lock fixing metal fitting 35 is provided which constantly closes the lower end hook portion 21a of the lock end 35a and lifts the lever portion 35b against the elastic force of the tension coil spring 34 as shown by the solid line to release the closing. is there.

Next, the procedure for loading the ladder α according to the present invention will be described with reference to FIG.

First, as shown by the phantom line, the worker ε once receives the upper part of the ladder α on the rear receiving roller 16, pushes it up and loads it on the front receiving roller 15 as shown by the solid line, and further lower the ladder α. When the ladder α is pushed in until it fits in the hood 4, the upper end of the ladder α projects forward from the hood 4 and faces the roof 36a of the cab 36. Thus, the weight of the ladder α is applied to the front and rear parallel receiving rollers 15 and 16 by the front and rear parallel receiving rollers 15 and 16, and the ladder α can be stored only by the pushing force.

Continuing on, the lever αb of the lock fixing bracket 35 is lifted as shown by the phantom line in FIG. 4 (c) to rotate the lock fixing bracket 35 clockwise to release the hook 21a from the closed position. After hooking the rear rail β on the hooks 20a and 21a, release the lever 35b and the tension coil spring 3
The elastic force of 4 returns to the original position as shown by the phantom line, the hook portion 21a is closed at the lock end 35a, and the ladder α is fixed so as not to come off as shown in FIG.

In this way, since it is heavy and long and difficult to balance, two or more people load and unload it, and further secure the ladder α to the upper part of the hood 4 with a string, etc. Compared to the conventional method where there was a risk of sticking out or swinging down the ladder α, it is possible to safely unload and load the ladder α alone, and after loading, it is possible to project or swing off while the truck is running. There is no danger of

[Effects of the Invention] Thus, the ladder loading device according to the present invention can efficiently load and unload the ladder while securing safety with a small force by combining the front and rear parallel receiving rollers and the hook metal fitting with the lock at the time of loading, Moreover, it has excellent practicability and usefulness such that the weather is rough when it is raining or the wind is strong, and the operation of loading and unloading mechanically and safely can be quick and easy mechanically and securely even at night.

[Brief description of drawings]

FIG. 1 is a sectional view taken along the line II of FIG. 2 showing an embodiment of the present invention before loading the ladder, FIG. 2 is a side view of the same after loading the ladder, and FIGS. 3 (a) and (b) are ladders. An enlarged plan view and a left side view of the receiving structure, and Figs. 4 (a), (b) and (c) are an enlarged plan view, an enlarged left side view and an enlarged left side view of the hook fitting with a lock.
Medium IVc-IVc line sectional enlarged view, Fig.5 (a) (b) is an enlarged left side view and enlarged front view of the hook metal fitting with a lock that hooks the ladder, and Fig.6 is an explanatory diagram of the ladder loading work. Is. 1 ... Truck, 2 ... Luggage platform 3 ... Top frame, 3a ... Ceiling part 4 ... Top, 5 ... Ladder structure 6,7 ... Front high pillar, 8,9 ... Rear low pillar 12, 13 …… Side structure 15,16 …… Receiving roller 19 …… Hook metal fitting with lock 20,21 …… Hook rod 22 …… Support hanging rod, 29 …… Standing rod 32 …… Pivot pin shaft, 33 …… Spring Hanging hole 34 …… Tension coil spring 35 …… Lock fixing metal fitting, 35a …… Lock end 35b …… Lever part α …… Ladder, β …… Step rail

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Katsuo Yawata 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation (72) Yutaka Saito 1-16-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corp. (72) Inventor Hiroshi Kamando 1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corp. (72) Shigeru Sato 1-1-6 Uchiyuki-cho, Chiyoda-ku, Tokyo No. Japan Nippon Telegraph and Telephone Corp. (72) Kenetsu Takahashi 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corp.

Claims (1)

[Scope of utility model registration request] Claims: 1. Front and rear stepped parallel receiving rollers are attached to the front and rear portions of a ladder receiving body whose left and right widths are slightly larger than the ladder width at the front of a truck bed with a hood and the ceiling at the rear of the hood frame. Ladder loading device for trucks with a hood, in which hook metal fittings with locks for hanging ladder steps are hung vertically