RU2703035C1 - Motor grader - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: invention relates to earthmover-transporting machines, in particular to motor graders, namely to devices of grader equipment. Motor grader comprises articulated frame consisting of rear semi-frame and front half-frames, and working equipment, including traction frame with grader blade, which is connected to front semi-frame by means of ball bearing consisting of housing and ball pin, which ball head is located in hemispherical cavity of housing. Ball bearing is made with possibility of multiple mounting/dismounting. Ball bearing housing is detachable and consists of two flange plates connected to each other with possibility of assembly/disassembly and fixed on the front semi-frame with possibility of dismantling. In each of the flange plates there are hemispherical cavities forming a single spherical cavity of the housing, into which ball head of the ball pin is installed, which shaft is made along the entire length of one diameter, wherein its length is smaller than the diameter of the ball head, and is equipped on the end with a flange, by means of which the ball pin is fixed on the traction frame also with possibility of dismantling.

EFFECT: longer service life and repairability of working equipment of motor grader with possibility of replacement of ball bearing elements.

1 cl, 4 dwg

Description

The invention relates to earth moving vehicles, in particular to motor graders, and in particular to grader equipment devices.

A known motor grader (patent No. US 2016/0108604 A1, publ. 04/21/2016,), adopted for the closest analogue containing a frame consisting of a rear half frame and a front half frame, to which working equipment containing a traction frame with a grader blade is attached via a ball joint . The ball joint consists of a body and a ball finger, the ball head of which is located in the hemispherical cavity of the body, while the ball pin is rigidly connected to the end of the traction frame, and the body is rigidly fixed to the front frame of the grader.

The main disadvantages of the known design of the grader is the complexity of the design and the complexity of the technological manufacturing of the ball pin, the complexity of the assembly of the ball bearings, as well as low maintainability of the working equipment due to:

- the impossibility of replacing the housing rigidly fixed to the frame of the motor grader when its hemispherical ball cavity is worn;

- the inability to replace the ball pin, also rigidly fixed to the end of the traction frame.

The objective of the claimed invention is to reduce the complexity of manufacturing and assembling the ball joint, increasing the durability and maintainability of the working equipment of the grader with the possibility of replacing the elements of the ball joint.

The specified problem is solved as follows.

The grader comprises an articulated frame consisting of a rear half frame and a front half frame, to which working equipment containing a traction frame with a grader blade is attached via a ball joint. Ball joint consists of a body and a ball pin, the ball head of which is located in the cavity of the body. According to the claimed invention, the ball bearing housing is detachable and consists of two interconnected flange plates, in each of which hemispherical cavities are made, forming a single spherical cavity in which a spherical pin head made in the form of a shaft with a flange is mounted. In this case, the ball bearing is made with the possibility of mounting / dismounting, namely, on the one hand, the ball bearing housing is made with the possibility of assembly / disassembly and mounted on the plate of the front frame, on the other hand, the ball pin of the ball bearing is also mounted on the traction frame with the possibility of dismantling.

The inventive design of the grader is presented in the following drawings:

in FIG. 1 - general view of the grader;

in FIG. 2 is a view A of FIG. 1 (mounting the traction frame to the front frame);

in FIG. 3 is a side view of a spherical finger;

in FIG. 4 - General view of the assembly - disassembly of the ball joint.

The grader comprises an articulated frame consisting of a front 1 half frame and a rear 2 half frame, working equipment 3, on the traction frame 4 of which a grader blade 5 is installed. Traction frame 4 is installed by means of a ball bearing 6 on the front half frame 1 (Fig. 1). Ball bearing 6 consists of a housing 7 and a spherical pin 8, made in the form of a shaft 9 (Fig. 2), one end of which is equipped with a ball head 10, and the other end is provided with a flange 11 (Fig. 3). The shaft 9 of the spherical finger 8 is made of the same diameter and less than the diameter of the ball head 10 (Fig. 3).

The front frame 1 at the attachment of the ball joint 6 is made in the form of a box section 12, reinforced with internal ribs for stiffness, to which a plate 13 with holes for mounting is welded. The housing 7 of the ball joint 6 is made detachable and consists of two flange plates 14 and 15, in each of which hemispherical cavities are made. The flange plates 14 and 15 are also made with holes for fastening and are bolted 16 to the plate 13 of the front half frame 1, forming a housing 7 with a single ball cavity in which the ball head 10 of the ball pin 8 is installed (Fig. 4).

The traction frame 4 is provided with a plate 17 welded to its end. The ball pin 8 by means of a flange 11 is attached using bolts 18 to the plate 17 of the traction frame 3.

When the grader is operating, the working equipment 3 has a significant load, which is transmitted to the ball bearing 6, while the design of the ball pin 8, the shaft 9 of which is made of the same diameter and less than the diameter of the ball head 10, allows to prevent possible malfunctions of the ball bearing 6, which increases the reliability and durability of the working equipment 3 of the grader. Also, when hemispherical cavities are worn in the flange plates 14 and / or 15, the ball joint 6 is dismantled - the body 7 is disconnected from the front frame 1, and the ball pin 8 is disconnected from the traction frame 4, then the flange plates 13 and / or 14 are replaced, after which the ball the support 6 is installed at the junction of the traction frame 4 and the front half frame 1.

Thus, the proposed design reduces the complexity of manufacturing and assembling working equipment, ease of assembly, the ability to replace ball bearings, a smaller range of equipment from the service workshop and increases the reliability and service life of the working equipment of the grader.

Claims (1)

A motor grader comprising an articulated frame consisting of a rear half frame and a front half frame, and working equipment including a traction frame with a grader blade, which is connected to the front half frame by means of a ball joint consisting of a body and a ball pin, the ball head of which is located in hemispherical cavity of the housing, characterized in that the ball bearing is made with the possibility of multiple mounting / dismounting: the ball bearing housing is detachable and consists of two flange plates connected x with each other with the possibility of assembly / disassembly and mounted on the front frame with the possibility of dismantling, hemispherical cavities are made in each of the flange plates, forming a single spherical cavity of the housing, in which a spherical head of a spherical finger is installed, the shaft of which is made over the entire length of one diameter, and its length is less than the diameter of the ball head, and is equipped with a flange at the end, by which the ball pin is also mounted on the traction frame with the possibility of dismantling.

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