JPS6035659Y2 - Blade impact destruction prevention device - Google Patents

Description

[Detailed Description of the Invention] Blades used for earthworks, snow removal, etc. are generally subjected to impact from obstacles during work, so a device is provided to prevent impact damage to the blade, vehicle body, etc.

As shown in Fig. 1, the conventionally used device is such that a blade b is rotatably connected to the front part of a car body a with a pin e and fixed with a shear pin d. When an impact is applied to the blade, the shear pin d is cut, and the blade b rotates around the pin e and moves to the position shown by the dotted line in Figure 1, which is designed to prevent impact.
After cutting with a shear pin, the tip of the cutting edge may sink further into the ground, or the vehicle body may be lifted, resulting in secondary destruction of the cutting edge or blade, digging deep into the ground, or obstructions (manholes, paving stones, etc.). ), and there is a risk of slipping or falling due to the floating of the vehicle body, which can cause secondary problems.

This project is concerned with devising an impact destruction prevention device that eliminates the above-mentioned drawbacks, and in which a banger protruding toward the front upper part of the car body and a hinge fixed to the blade are rotatably connected via a pin and fixed to the car body. A bracket and a support fixed to the blade are fixed below the banger with a shear pin so that the pin is located forward of the tip of the cutting edge, and when the shear pin is cut by an impact, the tip of the cutting edge It is characterized by being rotated away from the ground, and its purpose is to provide an impact destruction prevention device that eliminates the drawbacks of conventional devices and improves efficiency and safety.

The present invention is as described above, so if an impact is applied to the tip of the cutting edge, the shear pin will be cut off.
This prevents impact damage to the cutting edge, blade, car body, etc. in the event of an impact, and after cutting with a shear pin, the pin that rotatably connects the upper part of the blade is in a position forward of the tip of the cutting edge, so the rear The cutting edge on the side can be easily rotated counterclockwise (towards the upper rear) and removed from the ground, which prevents secondary failures such as those described above in conventional equipment, and can be easily and efficiently repaired by replacing the shearing pin. And work can be done safely.

Example 2 is shown below. 3. To explain Figure 4,
A banger 4 and a bracket 8 are fixed to the vehicle body 1, and a hinge 6 and a support 7 are fixed to the blade 2, which has a cutting edge 3 along its lower edge. The upper part of the hinge 6 fixed to the blade 2 is rotatably connected via a pin 9, and the bracket 5 fixed to the lower part of the car body 1 and the support 7 fixed to the lower part of the blade 2 are connected with a shear pin below the banger 4. 8, and the pin 9 is provided at a position forward of the tip 3a of the cutting edge 3. When the shear pin 8 is cut by an impact, the tip 3a of the cutting edge is moved counterclockwise (backward upper part). ) and is rotated away from the ground.

Since the embodiment is as described above, when an impact is applied to the tip 3a of the cutting edge 3 due to an obstacle etc. while moving forward, the shear pin 8 is cut, the lower part of the blade 2 is separated from the car body 1, and the upper part is separated. Since it can be rotated freely with pin 9,
The cutting edge 3, blade 2, car body 1, etc. are protected from impact damage during impact, and after cutting with a shear pin, the pin 9 that rotatably connects the upper part of the blade 2 is lower than the tip 3a of the cutting edge 3. Since it is in the forward position, the cutting edge 3 in the rear position is easily rotated counterclockwise (upper rear) and moves from the dotted line position in Figure 4 to the solid line position and leaves the ground, causing the cutting edge and blade to become secondary. It does not cause damage, it does not dig deep into the ground, it does not damage obstacles such as manholes and paving stones, and it does not interfere with driving because the vehicle body does not lift.There are almost no secondary problems like those of conventional devices, It can be easily repaired by replacing the shear pin, allowing for efficient and safe work.

The present device can be applied to wheel loaders, tractors, agricultural tractors, and other devices having blades.

[Brief explanation of drawings]

Figure 1 is a side view showing the outline of a conventional impact destruction prevention device;
FIG. 2 is a perspective view showing the outline of the present device, FIG. 3 is a side view thereof, and FIG. 4 is a side view showing the operating state thereof. 1: Vehicle body, 2 blades, 3: Cutting edge, 4
: hanger, 5 nib bracket, 6: hinge, 7: support, 8: shear pin, 9: pin.

Claims (1)

[Scope of utility model registration request] A banger protruding toward the front upper part of the vehicle body and a hinge fixed to the blade are rotatably connected via a pin, and a bracket fixed to the vehicle body and a support fixed to the blade are fixed below the banger with a shear pin. The pin that connects the banger and the hinge is provided in a position forward of the tip of the cutting edge, and when the shear pin is cut by an impact, the tip of the cutting edge is rotated and separated from the ground. Features a blade impact destruction prevention device.