RU2356820C2 - Milling-and-crushing machine - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: invention is related to equipment for loosening of bulked materials and may be used for crushing of large pieces of material on above-bunker grates. Milling-and-crushing machine includes automotive trolley (1), in body of which actuator is installed with cutters (2), which is made of two identical cylindrical rotors (3, 4) that are coaxially installed on their bearing supports (7, 8) and may rotate independently from each other. Cutters on rotors are installed along helical lines in opposite directions from the middle of every rotor. Bearing supports of cylindrical rotors installed in point of rotor end sides adjacency are covered with jacket in the form of cylinder with diametre equal to rotors diametre.

EFFECT: invention excludes effect of one drive at the other one, reduces energy intensity of unloaded material damage, reduces metal intensity and increases machine stability.

3 cl, 2 dwg

Description

The invention relates to equipment for loosening bulk materials and can mainly be used for crushing large pieces and frozen unloaded material on the super-hoppers of the receiving hoppers of stationary rotary or side tippers.

A known machine for the destruction of frozen soils and frozen bulk materials. The machine includes a screw blade mounted on a rod with its drive from a rotator equipped with an engine, the body of which is spring-loaded relative to the frame with hydraulic cylinders for its vertical movement. The rod is placed inside a wedge case spring-loaded relative to the frame, kinematically connected to the rotator case by means of ratchet gears, the parallel rails of which are gear-engaged with gears, the rotation axes of which are fixed on the frame. This embodiment provides increased reliability of the machine (patent of the Russian Federation No. 2223370, IPC E02F 5/32, 2004).

However, the known machine has a complex structure. It is not practical to use such a machine for crushing large pieces and frozen material being unloaded on the super-bunker grills of the receiving bunkers of stationary rotor or side car dumper.

A known machine for the destruction of frozen soils and frozen bulk materials, in particular for crushing large pieces and frozen unloaded material on the super-hoppers of the receiving hoppers of stationary rotary or side car dumper, including a biaxial self-propelled truck, in the body of which a worker loaded with a part of the machine’s weight is integrated over its entire width an organ in the form of four drums with teeth on vertical shafts connected by a transmission, for example, a belt-pulley with an electric drive in the form of two electric motors gamers mounted on a self-propelled cart (description of the USSR copyright certificate No. 409733, V02C 23/00, 4/02, 1974).

The disadvantages of this machine include the complexity due to the need to create multiple gears to drive all the drums. In addition, the operation of vertical drums contributes to the spreading of material from the crushing zone and does not contribute to pushing the destructible mass through the grate.

A known machine for the destruction of frozen soils and frozen bulk materials, in particular for crushing large pieces and frozen unloaded material on the super-hoppers of the receiving hoppers of stationary rotor or side car dumper, including a biaxial self-propelled truck, in the body of which is loaded with part of the weight of the machine and its entire width a cylindrical milling drum with cutters mounted on the drive shaft with a horizontal axis of rotation. Cutters are installed in straight lines parallel to the axis of the drum. A cylindrical milling drum with cutters is mounted on the drive shaft in two bearing bearings and has drives located on its end faces in the form of gears, each connected to its own electric motor (description to USSR author's certificate No. 768461, V02C 21/02, 1980).

However, the efficiency of the known machine is low. First of all, this is a large energy intensity, due to the work on the destruction of all the incisors located in one line of the drum. As a result, there is an impact on the material and its crushing, which requires an increase in the mass of the machine.

The closest in technical essence and the achieved result to the proposed one is a machine for breaking loose frozen materials and monolithic pieces on super-hoppers of receiving hoppers of stationary rotor or side car dumper, including a biaxial self-propelled cart, in the case of which is loaded with a part of the weight of the machine and a cylindrical load a milling drum with cutters mounted on the drive shaft with a horizontal axis of rotation. Cutters are installed along helical lines in opposite directions from the middle of the drum. A cylindrical milling drum with cutters is mounted on the drive shaft in two end bearing bearings and has drives located in its end faces in the form of gearboxes, each connected to its own electric motor (description to USSR author's certificate No. 1535627, V02C 18/06, 1990) .

However, the effectiveness of the known machine is low, because during operation, one drive influences another, which increases the energy consumption of the machine, in particular, the starting current increases, loads on the drive elements (coupling, gear wheels of the gearbox, bearing assemblies) increase. Assembly, installation, repair of a known machine is very complicated due to the large length of the drum. It is especially difficult in such machines to ensure the alignment of the bearings of the bearings.

The objective of the invention is to improve the well-known milling and crushing machine by eliminating the influence of one drive of the executive body on another, in order to reduce the energy intensity of the destruction of large pieces and frozen unloaded material on the super-hopper grids of the receiving bins, to simplify the assembly, installation, repair of the machine, and increase efficiency.

The problem is solved as follows. In a known milling and crushing machine, including a self-propelled cart, in the housing of which an actuator is installed, comprising a cylindrical milling drum with cutters fixed to the drives in the form of gearboxes with electric motors mounted on the drive shaft with a horizontal axis of rotation, according to the invention, an actuator with the cutters are made of two identical cylindrical milling drums mounted coaxially on their bearing bearings, which can rotate independently of each other a friend from independent drives located on the outer sides of the drums, the bearing bearings of which are located at the junction of the end faces of the drums, are closed by a casing covering the gap between the drums.

Preferably, the cutters on the drums are installed along helical lines in opposite directions from the middle of each drum.

The casing is made in the form of a cylinder with a diameter equal to the diameter of the drums.

In more detail the essence of the utility model is illustrated by drawings.

Figure 1 shows the structural-kinematic diagram of the machine (top view), figure 2 is a view along A in figure 1.

In the following detailed description, reference is made to the accompanying drawings, which show a specific illustrative example of a milling and crushing machine in which the invention can be practiced. This option is described in sufficient detail so that specialists in this field can use the invention, it being understood that other examples can be used and that without deviating from the essence and scope of the invention, logical and mechanical changes can be made. Therefore, the following detailed description should not be construed as limiting the scope of the invention.

The machine consists of a biaxial self-propelled trolley 1, in the body of which an executive body loaded with a part of the machine’s weight is integrated along its entire width with cutters 2, consisting of two coaxially installed identical cylindrical milling drums 3 and 4 mounted on drive shafts 5 and 6 with a horizontal axis of rotation . The drive shafts 5 and 6 are each installed in their bearing bearings 7 and 8, respectively. On the outer end faces 9 and 10 of each cylindrical milling drum 3 and 4, the drives are arranged in the form of gears 11 and 12 connected to electric motors 13, 14. The inner end sides 15 and 16 of the cylindrical milling drums 3 and 4 are adjacent to each other. Cutters 2 are mounted on drums 3 and 4 and are installed along helical lines 17 in opposite directions from the middle of each drum 3 and 4. Bearing bearings 7 and 8 of cylindrical milling drums 3 and 4, located at the junction of the inner end sides 15 and 16, are closed by a casing 18 (not shown in FIG. 1) closing the gap between the drums. The casing 18 is made in the form of a cylinder with a diameter equal to the diameter of the drums 3 and 4. The drive movement of the biaxial self-propelled cart 1 consists of an electric motor 19, a gearbox 20 and shafts 21.

The machine operates as follows. The material from the wagons is unloaded onto the super-bunker grate by means of a tipper (not shown in the drawing). The frozen material remaining on the grate or large blocks are destroyed by the proposed machine. The motors 13 and 14 are turned on, which transmit the rotation to the shafts 5 and 6 through the couplings and gearboxes 11, 12, and thereby to the drums 3 and 4. The motor 19 of the machine is turned on. The machine moves along the rails onto material poured onto the bunker grate, for example lumps of coal, which are destroyed by the cutters 2 of drums 3 and 4. As a result, the crushed material falls through the bunker grate into the receiving hopper. Due to the execution of the executive body of the machine in the form of two coaxial cylindrical milling drums installed coaxially, which can rotate independently from independent drives on their bearing bearings, during operation, the load on the drive elements (coupling, gear wheels of the gearbox, bearing units) is reduced, starting currents in the supply network are reduced, a more stable movement of the machine is ensured with one-sided arrangement of crushed material along the crushing front. This design of the machine makes it easier to ensure the pine bearings of the bearings of each drum during manufacturing and repair in comparison with a machine with one drum, the length of which can reach more than 7000 mm Application of the proposed machine design allows for the same performance to reduce the installed power of the drives. In general, this provides increased machine efficiency.

According to the invention, the company “Spetsmontazhmodul” LLC, Manganese manufactured the machine ДДАР-6100, the weight of which and the energy consumption in comparison with the machine made according to the prototype are reduced by about 1.4 times. Machine stability, productivity and reliability have improved. The diameter of the drums of the machine is 970 mm, the front of destruction is 6100 mm.

Claims (3)

1. Milling and crushing machine, including a self-propelled carriage, in the housing of which an actuator is installed, comprising a cylindrical milling drum with cutters fixed to the drives in the form of gearboxes with electric motors mounted on a drive shaft with a horizontal axis of rotation, characterized in that the actuator the organ with cutters is made of two identical cylindrical milling drums mounted coaxially on their bearing bearings, which can rotate independently of each other from The dependence of drives located on the outer sides of the drums, bearing supports which are located at the junction of the end sides of the drums, closed casing, closing the gap between the drums. 2. Milling and crushing machine according to claim 1, characterized in that the cutters on the drums are installed along helical lines in opposite directions from the middle of each drum. 3. Milling and crushing machine according to claim 2, characterized in that the casing is made in the form of a cylinder with a diameter equal to the diameter of the drums.

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