RU2541966C2 - Self-propelled road-building machine - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: invention relates to machines for repair of asphalt concrete pavements. Proposed machine comprises structural frame, running gear, power plant and control elements. Besides, it is equipped with spinning rotor to loosen the soils, cutter blade to cut and transfer the soil by compacting rollers at running gear, soil accumulation body and system of conveyers. The latter consists of extending working blade conveyor, feed conveyers mounted at body bottom on both sides of working blade conveyer and transverse conveyer beyond the machine board through preset distance.

EFFECT: perfected design.

5 cl, 3 dwg

Description

The invention relates to the field of equipment for the repair and maintenance of roads, namely, machines for the repair of asphalt pavements.

In Russia, the construction of new roads and the repair of existing pavements are constantly required. At present, very strict requirements are imposed on the quality of these works: according to modern technology and the quality of work, cost-effectiveness and lead time. Well-known existing road-building machines cope with the tasks, but, having a narrow specialization of technology, this creates significant costs for fuel, maintenance, and the number of labor costs of working personnel.

For example, when using traditional technology for laying a track 1 km long and 50 m wide, a large-capacity bulldozer of the Dreglizer type is required for the development of heavy soils (rooting out of stumps from trees, rocky and clay soils), two auxiliary bulldozers for collecting excess soil and a heap surface layouts, one soil skating rink for compaction of the surface, two excavators for loading soil into dump trucks and ten dump trucks with a carrying capacity of 30 tons for the removal of excess soil from the track for temporary storage and delivery of it back. Those. To complete the task in a timely manner, 16 units of road equipment are required, which significantly increases the cost of road works.

A mounted soil compaction and earth moving device is known, comprising a tractor, a frame, a roller with working elements on the outer surface, hydraulic cylinders, characterized in that the roller has cutouts in the frame disks, and a blocker with hydraulic cylinders for connecting with cutouts is located on the frame, while made in the form of a rectilinear element (RF Patent 2163948, publ. 10.03.2001).

A known machine for soil compaction, containing a roller with smooth rollers and a volume hydraulic actuator, which is equipped with a press attachment made in the form of a housing, in the front part of which there is a cutting wedge, and in the back there is a ramp connected with the rear part to the shaft of the front roller of the roller, with the possibility turning in the vertical plane, and the front part - with the roller frame by a power hydraulic cylinder, and inside the case, between the cutting wedge and the ramp, a belt conveyor is installed, the driving drum of which is connected to the shaft front drum roller via a chain transmission forming a gap therebetween, and before scoring wedge in front of the housing transversely to the longitudinal axis of the machine set screw feeder prototype (RF Patent No. 2136815, publ. 10.09.1999).

A known combine for the construction of profiled dirt roads (SU 41546 A from 01/21/1932), containing a support frame, controls, processing and transmission of soil, made in the form of cutting elements and rotating devices, and mounted on a frame compactor roller.

A digging self-propelled machine is also known (SU 114604 A, 07/02/1954), including cutting discs, dump conveyors, reloaders, rollers, and a self-propelled conveyor.

A common disadvantage of the known devices is the lack of functionality for performing road works.

The problem to which the present invention is directed, is to create a device that includes all the functions when performing road construction work while increasing productivity.

The technical result obtained by the implementation of the invention is to increase productivity when working on unprepared routes, reduce the cost of road work, due to fuel economy, versatility, based on the possibility of autonomous performance of the functions of milling, compaction, grading, soil removal from the processing zone, its moving, receiving and transporting, including from external drives, snow removal, in addition, increasing the durability of the road surface by increasing its density.

The specified technical result is achieved by the fact that the self-propelled road-building unit includes a support frame, a storage body, running gears, a power plant, controls, a rotating milling drum for loosening the soil, a shovel-knife for cutting and transferring soil, compacting rollers on the chassis , a soil storage drive, a conveyor system consisting of a retractable blade conveyor configured to extend beyond the rear side of the machine, feed conveyors located on the bottom of the body on both sides of t dump conveyor, and a movable transverse conveyor, configured to extend overboard the unit to a predetermined length.

Wherein:

- the fangs of the milling drum are equipped with victorious tips;

- the shovel-knife is made concave to the center, and a window is made in the center of the shovel blade;

- compacting rollers are made with the possibility of lifting in the transport position and lowering when compaction of the soil;

- the body-drive is equipped with a folding side for receiving soil from other road-building equipment.

The invention is presented by drawings. In FIG. 1 shows a general view of the unit, FIG. 2, a top view, in FIG. 3, left view.

The unit contains a support frame 1, a running gear made in the form of transport wheels 2 and compacting rollers 3, a milling drum 4 for loosening the soil and crushing stumps and rocks, a shovel-knife 5 for cutting and leveling the soil. The system of conveyors for soil transfer consists of a conveyor 6 for dumping soil from a shovel and reloading it into a storage body 7, a transverse conveyor 8 for transferring soil from a dump conveyor to the dump truck body or on the side of the road at a certain place, feed conveyors 9 for transferring soil in front of a shovel or onto the conveyor blade. In the storage body 7, a hinge board 10 is made, which serves as a tray for receiving the necessary amount of soil from dump trucks to the storage body of the unit. As the power plant 11, an internal combustion engine combined with a hydraulic pump is used. Driver's cab 12.

The unit operates as follows.

The movement of the unit in the area is carried out by transmitting torque from the internal combustion engine through cardans to the running gears 2. A powerful hydraulic pump is mounted on one shaft of the engine, designed to create oil pressure in the hydraulic system for controlling hydraulic units. The work of the lifting mechanisms of the shovel 5, the milling drum 4, the rear side 10 of the body is carried out by hydraulic cylinders. The movement of the conveyors and the rotation of the milling drum 4 is due to hydraulic motors. The engine and mechanisms are controlled from the cab of 12 drivers. With the translational movement of the machine milling drum 4 is loosening and crushing of the soil. For crushing hard rocky soil, the milling drum 5 is equipped with fangs with victorious tips (not shown). Loosened soil is cut with a knife of a shovel 5, with a concave shape it moves to the center of the blade and moves through the window in the blade of the shovel to the blade conveyor 6. From the blade conveyor 6, the soil is fed to the storage body 7 of the aggregate, and can also be loaded onto dump trucks or onto the cross conveyor 8, which is configured to extend overboard the unit to a predetermined length. The conveyor blade 6 is made with the possibility of extension over the rear side of the machine. Feed conveyors 9 are designed to feed the soil in front of the shovel 6 or reload the soil onto the blade conveyor 6 and are located on the bottom of the machine body on both sides of the blade conveyor.

Unlike the indicated analogues, the proposed technical solution - a self-propelled road-building unit, has a productivity of 2-3 times higher.

This is due to the fact that due to the accumulation of soil in the body of the unit with its subsequent transfer in front of the shovel to the pits in front of the machine, the possibility of transferring it in front of the unit creates conditions for the uniform distribution of soil on the roadbed, which increases productivity and reduces the cost of road work. If necessary, the transverse conveyor is turned on to transfer the soil to dump trucks or to the side of the road in a certain place, which is ensured by its ability to extend beyond the unit to a predetermined length. When loading soil from the dump truck into the storage tank of the unit, its tailgate can be tilted at a certain angle to ensure that the soil slides along an inclined plane, in which case material from the dump truck body is transferred to the feed conveyors and subsequently transported to the shovel of the machine, which also provides an increase productivity by accelerating the transfer of working material. The location of the feed conveyors on the bottom of the body on both sides of the dump conveyor also improves the performance of the unit as a whole.

Simultaneously with the movement of the unit, soil compaction is possible due to the compacting rollers, which can be lowered by means of a hydraulic system.

Transportation of the machine from one section of work to another can be carried out with the help of a tractor, which, with a rigid hitch, engages the machine with hooks mounted on the tailgate frame. During transportation, the compacting rollers are pulled upwards with the aid of hydraulic cylinders, so that the unit is supported on the road only through the wheels. In this case, the unit acquires the functions of a conventional trailer and can be transported at a speed of up to 70 km / h.

As experience shows, if devices that perform different functions are used separately, then the same result can be achieved at high production costs. Combining devices into a single unit makes it multifunctional, high-performance and low-cost. Using one unit is much cheaper than several, due to fuel economy, reduced human labor, reduced labor costs for servicing one unit compared to separately operating devices.

In addition, it is advisable to use the unit not only for the construction and repair of roads, but also for efficient snow removal in the winter. In this case, there is no interruption in the operation of the machine due to the seasonality of work in construction and the type of work. When moving, the unit, due to the milling drum and the knife of the shovel, effectively cuts off the snow and ice on the roads, accumulates snow in the storage body before dump trucks arrives or unloads snow on designated areas in certain places.

Thus, the claimed self-propelled road-building unit has high performance, has wide functional capabilities, which allows you to independently carry out a wide range of road works with low costs.

Claims (5)

1. Self-propelled road-building unit, including a support frame, a body-drive, running gears, a power plant, controls, a rotating milling drum for loosening soil, a shovel-knife for cutting and transferring soil, compacting rollers on the undercarriage, a body-drive soil, a conveyor system consisting of a retractable blade conveyor that can be extended beyond the rear side of the machine, feed conveyors located on the bottom of the body on both sides of the dump conveyor, and a movable transverse second conveyor adapted to overboard extension unit by a predetermined length. 2. Self-propelled road-building unit according to claim 1, characterized in that the fangs of the milling drum are provided with victorious tips. 3. Self-propelled road-building unit according to claim 1, characterized in that the shovel-knife is made concave to the center, while a window is made in the center of the shovel blade. 4. Self-propelled road-building unit according to claim 1, characterized in that the compacting rollers are made to be lifted in the transport position and lowered when compacting the soil. 5. Self-propelled road-building unit according to claim 1, characterized in that the body-drive is equipped with a folding side for receiving soil from other road-building equipment.

Images