JPS6138838Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a seat hanging device that is attached to a dump truck loading platform.

The object of the present invention is to provide a seat hanging device for a dump truck, which allows the sheet hanging operation to be carried out with a single touch from inside the driver's cab, and which can perform the sheet hanging operation extremely quickly.

Earth and sand loaded on the loading platform of a dump truck is often piled up in a heap on the loading platform, so when the truck is driving, this earth and sand falls onto the road surface and scatters, staining the road surface and impeding the driving safety of following vehicles. , or caused pollution by raising dust and smoke. In order to prevent these problems, the Road Act, Article 43-2, the Road Traffic Act, Article 71, Item 4, etc. require necessary preventive measures. Most of them are primitive ones that cover sheets, and a very small number of them are from the 1970s.
They simply used a device as shown in Publication No. 46742. However, among these methods, manual sheeting requires a lot of labor and time, tends to result in inaccurate covering conditions, and also causes serious staining of the worker's clothes during rainy weather. There were flaws. Although the device described in the above-mentioned publication has the advantage that the operator does not have to touch the sheets directly, it cannot be said to be perfect.

The present invention attempts to solve these problems, and has been able to completely achieve its purpose by completing the invention described below.

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

Reference numeral 1 designates a loading platform of a dump truck, and a rotary shaft 3 is rotatably inserted through the upper edge of a side wall 11 via bearings 2...2, and a seat S is mounted on frame rods 31, 31 protruding from the rotary shaft 3. It is stretched. Reference numeral 4 denotes a gear mounted on one end of the rotating shaft 3, which meshes with a driving gear 51 mounted on one end of the drive shaft 5. Reference numeral 52 denotes a connecting link whose base end is fixed to the other end of the drive shaft 5, and whose distal end is pivotally connected to the distal end of the crank arm 6 via a pivot shaft 61. 7 is a driving electric motor fixed to the base end of the crank arm 6, and a pinion gear 72 is attached to the tip of the electric shaft 71. Reference numeral 8 denotes a movement guide plate for the crank arm 6, and a guide rack 82 is attached to the back side of the guide groove 81 through which the electric shaft 71 can be inserted, along the guide groove 81.
This guide rack 82 and pinion gear 72 are engaged with each other. In addition, in the embodiment, the guide fissure 8
Although the shape of No. 1 is illustrated as a J-shape, this is to make the overall shape of the device compact, and is not particularly limited to this. It can be freely changed, such as by splitting it vertically or by splitting it in a straight line in the vertical direction. 9 in the figure is a bearing stand.

The present invention constructed as described above operates as follows, namely, when the loading platform 1 is empty, the operations shown in FIGS. 3 and 9 are performed.
As illustrated in the figure, the pinion gear 72 and the guide rack 82 engage with each other at the lowermost end of the guide groove 81, and the crank arm 6, the connecting link 52, the drive gear 51, and the gear 4 engage with each other. The driven rotating shaft 3 is positioned so that the seat S surface is parallel to the loading platform side wall 11. (Position A in Fig. 2) Next, when the sheet is hung after the loading operation is completed, when the pinion gear 72 is rotated by the drive electric motor 7, the pinion gear 72 engaged with the guide rack 82 moves along the guide rack 82 into the guide groove 81. The drive motor 7 with the pinion gear 72 integrated therein also moves toward the other end (in the direction of the arrow in FIG. 9). (See Figures 3 to 8). Since the drive motor 7 is fixed to the base end of the crank arm 6, the drive motor 7
When the crank arm 6 moves at the same time, the tip of the connecting link 52 pivotally attached to the tip is pulled up, and when the drive shaft 5 and the drive gear 51 are rotated accordingly, the gear 4 engages with the drive gear 51. The rotating shaft 3 is also rotated so that the sheet S covers the upper surface of the loading platform 1. These movements are performed sequentially and quickly in the direction from Figure 3 to Figure 7, with Figure 3 moving from position A in Figure 2, and Figure 4 moving from position B in Figure 2. 7 shows the position shown in FIG. 2 (E). In addition, when discharging earth and sand from a load or carrying out loading work, by reversing the rotation of the drive electric motor 7, the rotation is reversed, that is, from the state illustrated in FIG. 7 to the direction illustrated in FIG. 3. When activated, the cover of the sheet S can be easily opened.

Since the present invention has the above-mentioned structure, the sheet hanging operation can be carried out very easily and quickly by simply rotating the driving electric motor 7 in the forward or reverse direction. In addition, the present invention does not directly apply the rotational force of the driving electric motor 7 to the rotating shaft 3 on which the seat S is stretched, but rather the electric motor 7 body is The crank arm 6 that moves and moves along with this movement is connected to the connecting link 52.
Since it is structured to operate the following mechanisms, it has great features such as the torque of the drive electric motor 7 can be small, and also has a compact structure and can be provided at a low price.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, and FIG. 1 is a perspective view showing the mounting state on the side wall of the loading platform, FIG. 2 is a front view showing the mounting part of the device body and the operating state, and FIGS. 3 to 7. 8 is a sectional view taken along line A-A in FIG. 4, FIG. 9 is a sectional view taken along line B-B in FIG. 8, and FIG.
The figure is a perspective view showing an example in which the present device is attached to the rear wall of the loading platform. 1... Loading platform, 11... Side wall, 3... Rotating shaft, 3
1... Frame rod, 4... Gear, 5... Drive shaft, 51...
...Drive gear, 52...Connecting link, 6
... Crank arm, 61 ... Pivot, 7 ... Drive electric motor, 71 ... Electric shaft, 72 ... Pinion gear, 8 ... Crank arm movement guide plate, 81
...Guiding fissure, 82...Guiding rack.

Claims (1)

[Scope of utility model registration request] Rotating shaft 3 with sheet S stretched on frame rods 31...31
is rotatably attached to the upper edge of the loading bed side wall 11 of the dump truck via a bearing, and a gear 4 is attached to the end of this rotating shaft 3. The drive gear 51 attached to the tip of the drive shaft 5 is engaged,
The tip of the connecting link 52 has its base end pivotally connected to the tip of the crank arm 6 attached to the drive motor 7, and the pinion gear 72 attached to the tip of the electric shaft of the drive motor 7 has a guide rack 82.
A sheet hanging device for a dump truck loading platform, in which the main body of the driving electric motor 7 moves along a guide rack 82 by interlocking with the driving motor 7.