SU585867A1 - Disc crusher drive - Google Patents

Description

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This invention relates to the metallurgy of rare metals, such as titanium.

Known drive disk crusher containing electric motors, one of which is connected to the actuating shaft using the drive chain 1.

However, this drive has a low operational reliability when used to crush metals.

Also known is the closest to the invention drive of a disk crusher containing engines, the shafts of which are connected by corresponding gear transmissions with knife shafts, the unit for protecting the crusher from breakage 2.

The disadvantages of such a drive are that heavy and metal-intensive gearboxes, powerful foundations or frames are required for its implementation, as well as non-optimal use of its installed capacity when crushing a material of uniform strength and density. In addition, this drive is not. possesses high operational reliability. When large pieces of crushable material are seized, inevitable long-term simple crushers and the use of heavy manual labor to extract such sized pieces.

The purpose of the invention is to reduce the size and metal consumption of the design of the drive of a disk crusher, as well as to increase the efficiency and reliability of its operation.

This is achieved by the fact that in the device the motors are hydraulic and adjustable in speed, the gear shafts are located symmetrically with respect to an axis parallel to the blade shafts and

equidistant from them, and the crusher's protection unit against breakage is composed of a safety-discharge valve, a pressure relay, a reversing distributor and a time relay, with the output of the pressure relay connected to one input of the reversing distributor directly and to another input through a time relay.

FIG. Figure 1 shows the kinematic drive scheme of a disk crusher; in fig.

2 - its basic hydraulic circuit.

The disk crusher drive consists of two high-torque hydraulic motors 1 (Fig. 1) of a volumetric speed change, the rotation from which is transmitted to the blade shafts 2 through

individual gears, consisting of gearboxes 3, gear shaft 4 and gear wheels 5 mounted on knife shafts. The knife shafts are equipped with crushing discs 6, mounted in sub-supports 1 and connected

gear wheels. Hydraulic motors 1 are connected by a supply line 8 (Fig. 2) to a variable-capacity pump 9 and a drain line 10 to an oil tank 11. A protection unit is connected to the supply line, containing a safety-unloading valve 12, a pressure (load) relay 13 and a reversing distributor 14, from of which the drain line 10 is connected to the tank I via the nailer valve 15 and the filter 16. The reversing distributor is electrically connected to a time relay (not shown in the diagram).

Drive disk crusher works as follows.

When knives break up crushers of one or several durable pieces of material, for example, titanium sponge, torque increases on shafts 2 and rotors of hydraulic motors 1. Increasing resistance to rotation of the rotors of hydraulic motors causes an increase in pressure in the supply line 8 connected to the pump 9. As the latter works in the constant power mode, the supply of the working fluid (oil) to the hydraulic engines automatically decreases, the speed of rotation of their rotors decreases, respectively. The reverse is also true. The cutting speed may vary within wide limits, preferably 50-200 mm / s (along the edges of the discs).

When jamming the circular knives with large or especially durable pieces of titanium sponge, the pressure relay 13 through the reversing distributor 14 reverses the drive and automatically ejects the sponge from the circular knives. The command to resume crushing (forward travel) is given from the time relay. With an increase in the torque of the shaft over the admissible and, accordingly, pressure in the main line of the hydraulic motors, the safety-relief valve 12 is activated.

The proposed drive of the disk crusher has several advantages over the known ones used in crushers for grinding sponge titanium. In particular, when using this drive, the productivity of a disk crusher increases 2-3 times when grinding sponge titanium pieces that are not uniform in mechanical properties, obtained after the primary destruction of the sponge blocks, and the specific energy consumption for crushing is reduced by 20-30%.

Claims (2)

Invention Formula The drive of the disk crusher containing the engines, the shafts of which are connected by the corresponding gears with cutter shafts, the crusher's protection unit against breakdowns, characterized in that, in order to reduce the overall dimensions and metal consumption of the structures, to increase the efficiency and reliability of the device, the engines are made hydraulic and adjustable speeds, gear shafts are located symmetrically with respect to an axis parallel to and equidistant from the blade shafts, and the crusher’s protection unit against breakdowns is composed of a safety-unloading valve, a pressure relay, a reversing valve and a time relay, and a pressure relay output directly, and to another input through a time relay. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 379107, cl. At 02: 7/10, 07/04/69. 2. USSR author's certificate No. 153645, cl. At 02c 7/10, 12.05.62. one year fomgodj // ll /