RU2360066C2 - Bulldozer blade - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: bulldozer blade is made in sections and contains main (centre) blade and lateral blades, pivotally connected with the main blade connected through a frame with the transport vehicle. Lateral blades are spring-driven to the main blade and in the direction of its possible direct forward movement with plate-spring of bending deflection. Height of each of the lateral blades is made smaller than height of the main blade and sufficient for the lateral blade to pass freely through the gap formed by the lower edge of the road fence and foundation of the roadside.

EFFECT: widening functional capabilities and bulldozer blade design simplification.

3 cl, 6 dwg

Description

The invention relates to road-building machines, to mounted bulldozer equipment - a dump intended for cleaning freshly fallen snow of a roadbed, roadside, and also curb under road barriers.

Known snow blowers with dumps (see patent RU No. 2202674, M. CL 7 EN 5/06 from April 10, 2001). The side snow blower contains a blade cantileverly mounted on the supporting longitudinal beam of the vehicle. The blade is fixed under an additional swivel bracket with the help of articulated links with the formation of a U-shaped opening between the front end of the blade and the supporting longitudinal beam for the possibility of clearing the roadside from snow behind the road fence.

The disadvantage of the side snow blower is the complexity of its design, which (complexity) is due to the presence of a cantilever beam, articulated links and a hydraulic actuator with hydraulic cylinders.

Another disadvantage of the snowplow is that the process of clearing snow from the roadside under the road barriers is carried out with the snowplow stopping, i.e. the process is intermittent and inefficient.

There is another device for cleaning the inter-barrier space of road fences (see patent RU No. 2252591, M. class 7 E01H 5/00 of September 10, 2003). The device comprises a frame on which a blade mounted at an angle to its longitudinal axis is fixed, and an air stream source with a nozzle. The blade is located on one side of the longitudinal axis of the device.

The disadvantage of this device is that the blade moves at right angles to the direction of movement of the device, i.e. clearing snow from the roadside under the road barrier is carried out with the device stopped, i.e. the process is intermittent and inefficient.

Snowplow equipment is also known (see patent RU No. 2045610, M. class 6 Е01Н 5/06 of April 21, 1992), which contains a multi-section blade: the central section 2 and the side sections 3, 4. The side sections are connected to the central hinge and rotate in a horizontal plane under the action of the rods of the hydraulic cylinders 7, 8, which in turn are pivotally connected by the ends of the hydraulic cylinders to the frame 1.

The disadvantage of plow equipment is that it is designed to clear only the roadbed from snow and is not suitable for cleaning the curb under road barriers due to the significant height (width) of the side sections of the blade, as well as its design feature.

Another disadvantage of plow equipment is its complexity, which is explained by the presence of a hydraulic actuator with many hydraulic cylinders.

The latest invention according to patent No. 2045610 is the closest to the claimed object in terms of technical nature and function.

The objective of the invention is the creation of a simple in design high-performance device for cleaning freshly fallen snow curbs under road fences, which in a functional ratio would fully meet its purpose.

The problem is solved in that in the known bulldozer blade containing the main (central) blade, articulated side dumps, a frame connected to the main blade, the height of each of the side dumps is less than the height of the main blade and sufficient for free passage of the side blade through the opening formed by the bottom edge of the road fence and the base of the curb. Each of the side dumps is spring-loaded to the main dump and in the direction of its possible direct forward movement.

Each of the side dumps is spring-loaded with a bending leaf spring rigidly attached at one end to the rear surface of the main blade and the other to the rear surface of the side blade with the possibility of constant contact with it and sliding relative to it when the side blade is rotated.

Each of the side dumps is spring loaded relative to the main blade with a twisted or rod torsion spring.

Performing a side blade height sufficient for it to pass through the opening formed by the lower edge of the road fence and the base of the curb, as well as spring-loaded to the main blade and in the direction of its possible forward translational movement, allowed solving the technical problem of creating a device that is simple in design and efficient in operation .

The technical result consists in creating a bulldozer blade that is simple in design for efficiently cleaning freshly fallen snow from the curb under road barriers.

The drawings illustrate, as an example, the implementation of the invention “Bulldozer Blade", confirming the possibility of its industrial application using the totality of features, where

figure 1 presents a bulldozer blade, side view, with a fragment of the road fence and curb;

in Fig.2 - the same, view A;

figure 3 is a view of B along the axis of symmetry; side blade in normal operating position;

in Fig: 4 - the same, the side blade is rotated;

figure 5 - view In, a fragment of the main blade with a side, spring-loaded relative to each other by a twisted torsion spring;

figure 6 is the same, view G.

The bulldozer blade is made sectional and contains the main (central) blade 1, to the right and left sides of which the articulated side dumps 2, 3 are connected. The main blade 1 is connected to the frame 4, by which it is connected to the vehicle (tractor, car, in the drawing not shown). Each of the side dumps 2, 3 is spring-loaded to the main blade 1 in the direction of its direct translational movement of the leaf spring 5 of the bend. The spring 5 is attached at one end rigidly to the rear surface of the main blade 1, and the other end is pressed against the rear surface of the side blade with the possibility of sliding relative to it when the side blade is rotated. In the normal position, the lower edges of the dumps 1-3 are at the same level and are formed by scrapers 6, 7 made of elastic sheet material, for example rubber. Scrapers 6, 7 are connected to the metal base of dumps 1-3 through fasteners. Each of the side dumps 2, 3 can be spring-loaded relative to the main blade 1 also by a twisted or rod torsion spring 8.

Side dumps 2, 3 in height are significantly less than the height of the main (central) blade 1, which is explained by the function of the bulldozer blade - cleaning not only the roadbed 9 from freshly snowed snow, but also the curb 10 under the road fences “a” installed on racks 11.

Bulldozer blade works as follows. When hitting the side blade 2 or 3 on the rack 11 of the road fence pivotally connected to the main blade 1, the side blade rotates, bypassing the rack 11, after which, under the action of the spring 5, it returns to its original working position. Thus, the roadside is cleaned mechanically from freshly fallen snow under the road barrier during the rectilinear movement of the vehicle, with an improved bulldozer blade.

The bulldozer blade is made according to the type of the proposed design and tested under the conditions of road operation in winter. The test results are positive.

The list of positions to the application for the proposed invention "Bulldozer blade"

1 - the main dump,

2 - side blade (right),

3 - side blade (left),

4 - frame

5 - leaf spring bend,

6 - scraper (elastic),

7 - scraper (elastic),

8 - spring (twisted twist),

9 - canvas (road),

10 - roadside

11 - rack.

Claims (3)

1. Bulldozer blade containing the main (central) blade, articulated side dumps, a frame connected to the main blade, characterized in that the height of each of the side dumps is less than the height of the main blade and sufficient for free passage of the side blade through the opening, formed by the lower edge of the road fence and the base of the curb, each of the side dumps being spring-loaded to the main dump and in the direction of its possible direct forward movement. 2. The bulldozer blade according to claim 1, characterized in that each of the side dumps is spring-loaded with a bending leaf spring rigidly connected at one end to the rear surface of the main blade and the other to the rear surface of the side blade with the possibility of constant contact with it and sliding relative to it when turning the side blade. 3. The bulldozer blade according to claim 1, characterized in that each of the side dumps is spring-loaded relative to the main blade with a twisted or rod torsion spring.

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