JPS6338289Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a sealing device for an apron support pin that rotatably supports an apron in a motor scraper.

Conventionally, the apron of a motor scraper is attached to the opening of the bowl so that the apron can be opened and closed by supporting the tip of the apron arm on an apron support pin that projects from the side wall of the bowl toward the inside of the bowl. There is.

For this reason, there was a drawback that the earth and sand contained in the bowl entered the sliding contact portion between the apron support pin and the arm, causing these sliding contact portions to wear out prematurely.

This invention was made for the purpose of eliminating such drawbacks, and provides an apron support pin sealing device for a motor scraper that prevents dirt contained in the bowl from entering the sliding contact portion between the apron support pin and the apron arm. The purpose is to prevent these sliding contact parts from wearing out prematurely.

This invention will be described in detail below with reference to an illustrated embodiment. In the figure, 1 is the bowl of the motor scraper, which is box-shaped with an open top and front side, and an apron 2 at the front opening so that it can be opened and closed.
is provided to be able to move up and down. Above apron 2
has arms 2a projecting rearward from both ends, and at the tips of these arms 2a are spherical apron support pins projecting inward from the upper portions of both walls of the bowl 1. A semicircular notch 2b is formed into which the arm 2a fits, and a cap 6 is attached to the tip of each arm 2a by a fixing member 4 and a washer 5 so as to insert the apron support pin 3 therein. The apron 2 can move up and down around the apron support pin 3.

On the other hand, semi-cylindrical covers 2c and 6a are provided on the side surfaces of the tips of the apron support pins 3 of the arm 2a and the cap 6 so as to surround the tips of the apron support pins 3.
is provided protrudingly, and when the end surfaces of these covers 2c and 6a match each other, the apron support pin 3
A sealing member 7 divided into two parts is also provided on the side opposite to the covers 2c and 6a to prevent dirt from entering into the sliding contact portions of the pin 3, the arm 2a, and the cap 6 from the tip side. It is fixed by a divided presser plate 8 and a fixing member 9. The sealing member 7 is made of an elastic material such as a rubber plate, and has a semicircular sealing portion 7a in the center that slides into contact with the outer circumferential surface of the apron support pin 3 to prevent dirt from coming into contact with the apron support pin 3. This prevents it from entering the sliding contact portion of the arm 2a and the cap 6.

As described in detail above, this invention covers the tip side of the apron support pin 3 that supports the tip of the arm 2a of the apron 2 with covers 2c and 6a that protrude from the arm 2a and the cap 6, and also Since the base end side is sealed by the sealing member 7 attached to the arm 2a and the cap 6, dirt contained in the bowl 1 is prevented from entering the sliding contact portion between the apron support pin 3, the arm 2a, and the cap 6. can be reliably prevented. This reliably prevents these sliding contact parts from wearing out prematurely, and if the sealing member 7 and the presser plate 8 to which it is attached are divided into two, the sealing member 8 will wear out and the sealing effect will decrease. It can also be easily replaced.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention, in which Fig. 1 is an exploded perspective view of the bowl and apron, Fig. 2 is a side view of the apron support, Fig. 3 is a sectional view taken along the line of Fig. 1, and Fig. 4 is a cross-sectional view taken along the line of Fig. 1. The figure is an exploded perspective view of the apron support. 1 is the bowl, 2 is the apron, 2a is the arm, 2
C is a cover, 3 is an apron support pin, 6 is a cap, 6a is a cover, and 7 is a sealing member.

Claims (1)

[Scope of utility model registration request] The apron support pin seal device for a motor scraper comprises arms 2a projecting from both ends of an apron 2, the tips of which are rotatably supported on apron support pins 3 which project inwardly from the upper part of a bowl 1, covers 2c, 6a being provided on the sides of the arms 2a and on the sides of a cap 6 which attaches the arms 2a to the apron support pin 3 so as to cover the tip side of the apron support pin 3, and a seal member 7 which is in sliding contact with the peripheral surface of the apron support pin 3 is attached to the opposite side of the arms 2a and the cap 6.