RU2499864C1 - Plant to prepare snow mass for melting - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: plant to prepare snow mass for melting differs by the fact that bodies of motor reducers are in pairs joined to each other with an elastic mechanical links with cantilever arrangement of motor reducers on driving shafts of a movable grid. At the same time the bodies of the shaft bearings are fixed on the frame of the section with the help of pins arranged on a common frame for the entire section of shafts for previously used fastening dog bolts. And the movable grid is at the same time made from horizontal shafts and is installed along the perimeter of the melting chamber, with permanent connection of shafts with individual electric drives and their uninterrupted rotation.

EFFECT: invention makes it possible to ensure higher efficiency, throughput capacity, reliability and durability, operating manoeuvrability, and makes the process of ice and snow mass mixing and sifting more efficient.

5 dwg

Description

The invention relates to the field of cleaning roads from snow mass and ice removed from road surfaces.

Known snow melting installation containing a receiving hopper with a movable grill mounted above the melting chamber (patent for invention No. 2224850, ЕНН 5/10, publ. 05.08.2004).

The movable lattice is made of horizontal horizontal drive shafts mounted perpendicular to the hopper loading direction with disks rigidly fixed uniformly along the shaft length, while the hammers of one shaft are staggered relative to the hammers of the other shaft, and the shafts have a group reversible electric drive for their rotation. The shafts are mounted relative to each other at a distance providing a partial arrangement of the hammers of one shaft between the disks of the adjacent shaft. The whole installation has two group reversible electric drives with six shafts each. In this case, one of the six shafts on the side of the transmission gears installed at their ends is directly connected to the electric drive through the spindle device. Transmission gears on the one hand and bearings on the other hand are enclosed in split housings, the bearings of which are integral with the frame common to each section.

A disadvantage of the known design of the snow melting installation is that it can only be repaired in the factory, which eliminates the installation itself from the duty cycle for a long time and requires significant material costs for the maintenance of snow-melting points.

Of the known installations for preparing snow mass for melting, the closest in technical essence is the installation containing the receiving hopper with a movable grill mounted above the melting chamber (patent No. 67595, ЕНН 5/10, published on October 27, 2007). The movable grill is made of drive shafts horizontally mounted parallel to the loading direction of the hopper, with the possibility of their individual dismantling, while each of the shafts is connected to an individual drive in the form of a reversible motor gearbox, and has disks rigidly fixed and evenly mounted along the shaft length, between each pair of which hammers are screwed. The shafts are mounted on rolling bearings in housings located at the ends of each shaft, one of the housings being connected via a cup to the corresponding gear motor and the bearing housings in their lower part made with double-sided wedge surfaces installed in common for each section consisting of of four rotors, the frame and fastened with it by four hinged bolts placed in the grooves of these buildings. The entire installation consists of two sections, each of which contains one frame common to four drive shafts, while each drive shaft is attached to this frame through four bearing bolts located in the grooves of these housings through bearing housings located at the ends of the shaft.

Such a design of the installation significantly complicates the process of individual dismantling of drive shafts, especially taking into account the total number of snow-alloy chambers, and therefore sections and drive shafts, at all snow-alloy points. The hinged bolts for fastening the bearing housing of the drive shafts to the common frame of each section of the installation, located in the grooves of these cases, as well as the nuts pressing these cases to the frame of the section, are subject to constant exposure to aggressive media during operation, which leads to their corrosion, especially in joints hinged bolts with frame section, and, therefore, premature failure.

The connection between the shaft and the gearmotor currently existing, through the intermediate cup flange, respectively, with the bearing housing and the gearbox flange, while the rotation of the shaft from the gearbox is transmitted through an elastic sleeve-finger coupling located inside this cup, is also ineffective due to premature wear and failure of rubber bushings and coupling fingers, coupling halves themselves, as well as bolts connecting flanges, which ultimately leads to breakdowns inside the gearbox and requires additional long repairs. Also, the known method of mounting the gear motor on the cantilever part of the shaft using a jet bracket mounted on the bearing housing on one side and pivotally connected on the other side through an eye with the gear housing does not solve the problem. In case of falling between the rotating shafts of non-fragmentable objects, which eventually lead to a stop and even “jamming” of them, the resulting short-term (tenths and hundredths of a second) dynamic loads (approximately equal to the starting ones) are several times higher than the nominal values. All this leads to deformation of the cantilever part of the shaft, breakdowns of the brackets themselves, and even connecting elements in the gearboxes.

The technical result of the present invention is the creation of an installation that can significantly increase its operational efficiency, as well as the reliability and durability of its constituent mechanisms.

The technical result is achieved by the fact that in the installation for preparing snow mass for thawing, the housing of the drive gear motor of each shaft is connected in pairs with the adjacent housing of the gear motor by elastic flexible connection, and the rotation of the shaft is transmitted directly from the gear located cantilever on the same shaft.

The design of flexible elastic coupling between the housings of adjacent gearmotors allows for stable vertical cantilever design of the gearmotor housing on the shaft of the section and significantly reduces the effect of dynamic loads, which undoubtedly significantly increases the operational efficiency of the installation.

An example implementation of the invention is shown in figure 1 ... 5, where:

figure 1 - shows a General view of the installation;

figure 2 is a view a of figure 1;

figure 3 is a section bB of figure 2;

figure 4 is a section bb In figure 3;

figure 5 - diagram of the dismantling and installation of reinforced hoses and lugs from the housing of the motor gearboxes.

The installation for preparing snow mass for melting consists of a hopper 1 with a movable grate made of horizontal drive shafts 2 mounted above the melting chamber 3. On the drive shafts 2, disks 4 are rigidly fixed along the length of each shaft, hammers 5 are also rigidly fixed between each pair forming a helical line relative to the shaft 2. Each pair of shafts 2 contains bearing housings 6 located at their ends, and on the one side of each bearing housing 6 there is a housing of the corresponding gear motor 7, per driving rotation to each shaft 2 directly from the drive shaft 8 of the gear motor 7, mounted cantilever on the same shaft 2.

The gearmotor housings are pairwise through lugs 9, screwed completely into the threaded holes of the side walls of these housings in their upper part, through reinforced rubber sleeves 10 fixed to these lugs 9 with clamps 11, interconnected by an elastic mechanical connection, and bearing housings 6 with this with the help of pins 12 installed in the grooves 13 in place of previously used hinged bolts, are pressed to the frame 14 with nuts 15.

Installation works as follows.

Snow and ice falls on the rotating shafts 2 of the movable grating, which, with the help of hammers 5, crush them into fragments falling between the shafts 2 with the disks 4 rigidly fixed on them into the melting chamber 3. When dismantling the sleeves 10 and tips 9 of the gearmotor body 7 radially along the axes of the drive shafts 2 are pulled apart, and when dismantling the installation itself, the drive shafts 2 together with the frame 14 of the movable grate section are easily lifted by a crane from the melting chamber 3.

The design of the installation, which allows to increase the operational reliability of shaft drives, significantly reduces the number of unscheduled repairs of gear motors, as well as transport operations associated with the replacement of failed equipment at snow-melting points, which is especially true in large cities.

Thus, the proposed installation for the preparation of snow mass for melting with the mounting of bearing housings of drive shafts to the frames of the sections using studs placed on the frames of the sections of the movable grill instead of the hinged bolts for fastening these bearing housings located at the ends of the shafts, one of the housings of the corresponding motor the gearbox is connected in pairs with another housing of the gearmotor by an elastic mechanical connection, while the rotation of the installation shaft is transmitted directly from the hollow shaft of the gearmotor installed cantilever behind the bearing housing, while the movable lattice itself is installed along the perimeter of the melting chamber, which allows, in comparison with known installations, to provide a higher:

- performance;

- bandwidth;

- reliability and durability;

- operational maneuverability.

Claims (1)

Installation for preparing snow mass for melting, containing a receiving hopper mounted above the melting chamber with a movable grate made of horizontally mounted shafts, each of which is connected to an individual drive in the form of a reversible gear motor mounted cantilever on this shaft, and is rigidly fixed and disks evenly mounted on the shaft, between each pair of which hammers are fixed along a helix along the shaft length, the shafts being parallel to the hopper loading direction and installed flanges on rolling bearings in the housings located at the ends of each shaft, and the housings in their lower part are made with double-sided wedge surfaces installed in a frame common to the entire shaft section, characterized in that the bearing housings are attached to the frame sections with pins installed in common for the entire shaft section of the frame, in place for hinged bolts for each of the housings, and the gear motor housings, instead of the reaction brackets and flanges to the bearing housings, are interconnected in pairs by an elastic mechanical connection while the grate itself is made of horizontally mounted shafts and is installed around the perimeter of the melting chamber.

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