RU19052U1 - SURFACE MACHINE - Google Patents

Abstract

A road surface treatment machine comprising a basic dump truck with a bulk material dispenser installed on it, as well as mounted plow and (or) brush equipment. New is that:

1. The distributor is mounted on a platform having a bottom with a lifting rear.

2. Remover and installation of the distributor is carried out without the use of extraneous lifting machines or lifting the platform of the dump truck, and with the help of two front and two rear hydraulic cylinders with rollers mounted on the distributor. Four hydraulic cylinders make the process of removing or installing the valve simple, safe and quick.

E01 C19 / 20

ESSAY

Description

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SURFACE MACHINE

The solution relates to vehicles for winter road maintenance, in which a dump truck is used as the base vehicle for installing special equipment. The machines are designed for the distribution of anti-ice bulk materials (sand-salt mixtures, dry salts, moistened salts) on the carriageway, having in their configuration mounted plow equipment in various combinations (front swivel or high-speed blade, middle blade, side blade) , and brushing equipment for cleaning the roadway with or without it.

Known machine for winter road maintenance NO-075, manufactured by the Amkodor concern (Glazov A.A. et al. Construction, road and special equipment. Quick reference. - M.: AO Proftehnika, 1998. P. 303). The machine consists of a base MAZ-5551 dump truck, a distributor of anti-icing bulk materials and mounted plow equipment (with or without it - a modification of HO-073).

Foreign companies SCHMIDT (Germany) also produce similar equipment, (Construction and road machines: Monthly scientific-technical and production, journal. / ZAO Stroydormash, OAO Concern stroinstrument. - 1999; No. 8. - M .: Publishing House LLC SDM-Press - ISSN 0039-2391. - S. 14-15) Giletta (Italy) (Construction and road machines ... -1999; No. 7 - S. 32-33).

The distributor of anti-icing bulk materials consists of a body with inclined walls and a grill, a scraper or belt type conveyor and a disk spreader. On all the above machines, the distributor is mounted on a dump truck platform, the bottom of which is flat.

Installing the distributor on the truck platform or removing the distributor from the truck platform is carried out according to one of three well-known schemes:

1. Using extraneous lifting machines (truck crane, crane-beam, etc.). The scheme is irrational, since it requires the use of other equipment, which is not always possible. But in the design of most machines it is incorporated, not being the main one;

2.Without the use of extraneous lifting machines and without lifting the platform of the truck. When removing according to this scheme, the dump truck moves out from under the distributor raised above its platform, and during installation, it drives under the distributor, then the distributor lowers onto the platform. Raising or lowering the distributor is carried out using four removable or folding supports, the supporting surface of which is located outside the area of the machine, and each of which is a screw jack with a worm pair. The complexity of the supports and the complexity of the operations are significant disadvantages of this scheme;

3. Without the use of extraneous hoisting machines with a small lift of the truck platform. For flat-bottom vehicles, dump truck platforms are the most rational and common scheme. It greatly simplifies the design of the supports, since there is no need to make them jacks. According to this scheme, the installation and removal of the distributor are carried out with the slow movement of the truck with the platform raised at an angle of 3 ° ... 6 °. In this case, the distributor rests on the rear supports standing on the ground and the front rollers rolling along the bottom of the platform. The front folding or removable bearings are installed in the working or inoperative position when the front rollers of the distributor are near the edge of the truck platform. Slight lift of the truck platform is necessary in order to install or remove the support of the spreader.

For the aforementioned flat-bottom machines of the dump truck platform, the third scheme for installing and removing the distributor has received the greatest application. The second scheme with screw supports is used on some samples of its equipment by the German company SCHMIDT.

The design feature of some dump trucks, for example, KamAZ-55111, KamAZ-65115, is that they have bucket-type loading platforms with a bottom that rises in the rear. Using a dump truck with such a platform as a base car for a road car significantly complicates the process of removing and installing a distributor on it according to schemes 2 and 3.

The use of the second scheme complicates the supports even more, since it requires an increase in the travel of the jacks of the supports by the amount of the rear lift of the bottom. The application of the third scheme requires lifting the platform of the truck at an angle equal to the angle of elevation of the rear of the bottom ("15 °), this will lead to a significant increase in the loads on the front rollers and rear supports when approaching a dump truck with a high platform. This significantly reduces the safety of work on the removal and installation of the distributor and requires high accuracy and skill from the performers.

The task is to carry out a simple, quick and safe removal of the distributor from the platform (installing the distributor on the platform) of a dump truck with a rising rear of the bottom without the use of extraneous lifting machines, without lifting the dump truck platform, using structurally simple supports. From the point of view of operation, it is also preferable that the supports are retractable, not removable, and all the hard work of removing and installing the distributor would be carried out using the hydraulic equipment of the machine.

A machine for treating the road surface is proposed, the base vehicle of which is a dump truck with a platform having a bottom lift in the rear and a distributor mounted on the machine.

FIG. 1 - Road surface treatment machine with a bucket-type dumping platform and a removable distributor mounted on it.

Figure 2 - Hydraulic diagram of the rise of the distributor.

Fig.Z, 4, 5 - Diagram of the removal of the distributor from the platform of the truck.

On the distributor 1 (Fig. 1) two front hydraulic cylinders 2 with rollers 3 and two rear hydraulic cylinders 4 with rollers are installed. The rollers of the front cylinders are directed along the platform of the dump truck; they are used when the dump truck leaves the distributor and drives under it. The rollers of the rear cylinders are directed across, they are used to install the distributor on the platform of the truck in the transverse direction. The hydraulic cylinders are controlled by a two-section valve 5 installed in the rear of the valve. In the retracted position of the hydraulic cylinder rods, the rollers do not protrude beyond the lower supporting plane of the distributor. The stroke of the hydraulic cylinder rods ensures that the distributor detached from the platform of the dump truck is raised to a height exceeding the height of the rear of the bottom of the platform. Hydraulic cylinders are equipped with hydraulic locks, which provide reliable fixation of hydraulic cylinder rods in the released position. The distributor has two rear bearings 6, rising up along its guides, and two front bearings 7, retractable under the frame of the distributor. The front supports in the working position are fixed by struts.

In FIG. 2 are marked: 1 - front distributor lifting cylinders, 2 - rear distributor raising cylinders, 3 - two-way hydraulic lock, 4 - two-section hydraulic distributor, 5 - quick disconnect hydraulic coupling. The sequence of operations for removal is as follows: - splitting of the distributor (Fig. 3); -disconnecting the hydraulic hoses of the feeder and spreader; -connection of hydraulic hoses of hydraulic cylinders of raising the distributor; - rise of the distributor; -installation of the rear supports (Fig. 4); -cleaning the rods of the rear cylinders; -Moving the truck forward to the approach of the rollers of the front cylinders to the rear lift of the bottom of the platform; -installation of the front supports (Fig. 5); -cleaning the rods of the front cylinders; - disconnection of hydraulic hoses of hydraulic cylinders; - departure of the dump truck from the distributor. The installation of the distributor on the tipper platform is carried out in the exact sequence.

Claims (1)

A road surface treating machine, comprising a base dump truck with an anti-icing bulk material distributor installed on its platform, as well as mounted plow and (or) brush equipment, characterized in that the distributor is equipped with two front and two rear hydraulic cylinders with rollers designed for removal the distributor from the loading platform and installing the distributor on the loading platform of the dump truck, the platform of which has a bottom with a lifting rear, without resorting when removing and installing the distributor to the lifting platform or the use of extraneous lifting machines.