RU2324051C1 - Full-face machine - Google Patents

Abstract

FIELD: mining; apparatus for making tunnels in underground mining of minerals.

SUBSTANCE: machine includes undercarriage representing a frame whereon caterpillar trucks are attached and trunnion axes of a working head gearbox together with a rotary working head, loading buckets, berm mills, cutting drums, gathering blades, conveyer and protection cowl mounted on supports of said frame. Hydraulic lift cylinders of the working head gearbox are attached to this frame, rods of said cylinders are attached to the working head housing and all rotating parts of said rods are set into bearings equipped with a force lubrication system. The lubrication system includes pump, pressure pipeline, manifolds and system of distribution tubes leading to gear shaft bearings of the gearbox. The undercarriage frame has two tightly closed cavities, wherein a pressure line between the pump and manifolds is positioned being made in the form of coils. Both cavities of the frame are filled with cooling fluid.

EFFECT: cooling of lubricating fluid within the lubrication system; increasing the life of gear shaft bearings of the machine gearbox; decreasing the ambient air temperature; enhancement of working conditions for the operating staff.

4 dwg

Description

The invention relates to equipment for mining in underground mining.

A roadheader is known, comprising a running gear, which is a frame on which right and left tracked carts are mounted on the right and left sides, and on the frame supports the axles of the gearboxes of the drive gear of the actuator with the rotor actuator, loading buckets, berm cutters, cutting drums are mounted , with pick-up shields, a conveyor, an enclosing shield, the hydraulic cylinders for lifting the gearbox of the executive body are also fixed on the frame, the rods of which are fixed on the gearbox, all rotating parts They are mounted in bearings equipped with a forced lubrication system, including suction pipes, a pump, a pressure pipe, manifolds and a distribution pipe system for bearings and gears of the gearbox [1].

The disadvantage of such a harvester is that the bearings overheat under intense operating conditions of the rotating parts of the harvester, especially in the gearbox of the actuator, where the gear shafts absorb large cutting forces from the actuators, which leads to failure of the bearings, and an increase in the ambient temperature, which adversely affects the working conditions of staff.

An object of the invention is the cooling of the lubricating fluid in the lubrication system, increasing the durability of the bearings of the gear shaft of the combine gear reducer, lowering the ambient temperature, thereby improving the working conditions of the staff.

The technical result is achieved by the fact that in a mining tunneling machine containing a running gear, which is a frame on which the right and left tracked carts are fixed on the right and left sides, and on the frame supports, the axles of the gearboxes of the actuator drive gearbox with rotary actuator are mounted, loading buckets, berm cutters, detachable drums, pick-up shields, conveyor, fencing shield, hydraulic cylinders for lifting the gearbox of the executive body, the rods of which are closed, are also fixed on the frame are replicated on its housing, all the rotating parts of which are mounted in bearings equipped with a forced lubrication system, including a pump, a pressure pipe, manifolds and a distribution pipe system for bearings of the gear shaft of the gearbox, the chassis frame has two hermetically sealed cavities, and the pressure pipe between the pump and the collectors are made in the form of coils placed in these cavities, while both cavities of the frame are filled with coolant.

Figure 1 shows the mine shaft tunneling machine, figure 2 is a side view of the frame of the combine, figure 3 is the same, a top view, figure 4 is a section aa in figure 1.

The shaft mining combine contains a running gear, which is a frame 1, on the right and left sides of which caterpillar trolleys 2 are fixed, the frame 1 has supports 3, in which the axles 4 of the axles of the gearbox 5 of the actuator drive are mounted with the possibility of rotation in the vertical plane. The hydraulic cylinders 6 for controlling the rotation of the gearbox 5 of the actuator drive are fixed on the frame 1, the rods of which are fixed to the gearbox 5 body.

The gearbox 5 of the drive of the Executive body contains a system of gears rigidly mounted on shafts mounted in the housing of the gearbox 5 in the bearings. On the output shafts and gearbox 5, a rotary actuator 7 is rigidly mounted in the form of a coaxially located drill and crosspiece with loading buckets 8, Berm cutters 9 with pick-up shields 10 and cutting drums 11. A conveyor 12 and a partition shield 13 are also mounted on the gearbox 5.

The gears and bearings of the gearbox 5 are equipped with a forced lubrication system, including a pump 14, a pressure pipe 15, manifolds 16 and a distribution tube system for bearings of the gear shaft of the gearbox 5.

Frame 1 has two sealed cavities 17 filled with coolant. The pressure pipe 15 between the pump 14 and the collectors 16 is made in the form of coils placed in these sealed cavities 17.

The miner mine works as follows.

When mining in the ore mass by a mining tunneling unit, the mass is destroyed by the executive body 7 of the combine with the formation of a cylindrical section of the mine. Buckets 8 beaten rock mass rises from the soil and loaded onto the conveyor 12, which is transported and loaded onto the next vehicle. Berm cutters 9 form a flat surface of the soil along the edges of the cylindrical section of the excavation, opposite the tracked carts 2, pick-up shields 10 clean the soil and pick up the spill. Cutting drums 11 cut the remaining jumpers to form an arched section of the mine. The feed motion of the executive bodies is the working stroke of the tracked carts 2 of the combine to the array.

The trajectory of the combine depends on the location of the sylvinite layer in the mountain range. Therefore, if the layer goes lower or higher, the hydraulic cylinders 6 rotate the gear 5 on the axis 4 of the pins in the supports 3 of the frame 1. Since the actuators 7 are mounted on the gear 5, the Berm cutters 9 with pick-up shields 10, the cutting drums 11, the conveyor 12 and the enclosing shield 13 - they all make up a single system, which rotates together with the gear 5. At the same time, the excavation invariably has an arched section, the soil is smoothly cleaned with pick-up shields 10, and serves as a way to move the tracked carts 2 of the combine.

However, at large angles of inclination of the gearbox 5 with respect to the horizon, a forced lubrication system for bearings of the gear shaft is required. To do this, a distribution pipe system is supplied to them, which from the pump 14 through the pressure pipe 15 and the manifolds 16 supply oil to the bearings of the gear shaft. The pump 14 creates pressure in the pressure pipe 15, due to which oil is distributed through the distribution pipes to all bearings of the gear shaft.

During the operation of the combine, the bearings and gears of the gearbox are subjected to heavy loads, which constantly increase the temperature of the oil, and since it circulates in the closed hydraulic system of the combine, it must be cooled. For its cooling, cavities 17 are provided in the frame 1 of the combine, into which coolant is filled and in which the coils of the pressure pipe 15 with oil pass. In these cavities 17, the oil during the passage in the coils gives off the heat of the coolant - thereby cooling itself. In addition, the filling of the cavities 17 of the frame 1 with liquid leads to an increase in the weight of the combine without increasing its metal consumption, which favorably affects the stability of the combine during the cutting process.

Thus, the proposed design of the mine tunneling machine eliminates overheating of the lubricating fluid in the system of the combine, improves the working conditions of the bearings of the gearbox of the executive body of the combine, and improves the working conditions of maintenance personnel.

Information sources

1. Operation of the digger PK-8M / K.A. Lokhanin, V.F. Gribov, V.I. Teslenko and others; ed. 2nd, rev. and add. - M., Nedra, 1978.- P.38, 69-71.

Claims (1)

A tunneling miner with a running gear, which is a frame on which the right and left tracked carts are mounted on the right and left sides, and the axles of the gearboxes of the actuator drive gearbox with the rotor actuator, loading buckets, berm cutters, and cutting drums are mounted on the frame supports , with pick-up shields, a conveyor, an enclosing shield, the hydraulic cylinders for lifting the gearbox of the executive body are also fixed on the frame, the rods of which are fixed on its body, all rotating parts are They are installed in bearings equipped with a forced lubrication system, including a pump, a pressure pipe, manifolds and a distribution pipe system for bearings of gearbox shafts, characterized in that the chassis frame has two hermetically sealed cavities, and the pressure pipe between the pump and collectors is made in the form of coils placed in these cavities, while both cavities of the frame are filled with coolant.

Images