SU403535A1 - DEVICE FOR GRINDING END OF RAILS - Google Patents

Description

one

This invention relates to devices for the processing of rolling products.

Devices for treating the ends of the rails are known, made in the form of a centering that is moved in the direction towards the end face and carries a grinding headstock and a clamping mechanism including upper and lower jaws.

The proposed device differs from the known ones in that the base is movable along the rails being machined, and the grinding head bearing the spring-loaded circle is movable along the end to be machined, while the upper sponge of the clamping mechanism is displaced towards the lower movable sponge provided with a braking wedge; In addition, the device is equipped with a sensor for the presence of rails, with the limit switches for automatically stopping the device in extreme positions and when it hits another rail. This makes it possible to grind the ends of the rails in and out of the rail trimming flow.

FIG. 1 shows the proposed device, a general view; in fig. 2 - the same in terms of; in fig. 3 is a section along A-A in FIG. 2 and grinding wheel, side view.

The device consists of a self-propelled rail carriage 1 with an electromechanical drive 2,

A C-shaped movable bed 3, in the upper part of which a clamping hydraulic cylinder 4 is fixed, the brush of which is rigidly connected to the bed 3, and the body is made up of the base and serves to attach the clamping jaw 5. At the bottom, opposite the upper spring jaw 5, the lower lift support 6 is installed with wedge lifting mechanism from hydraulic cylinder 7.

On the trolley 1, the guides 8 are rigidly fixed along the direction of its movement, along which the bed 3 moves with the hydraulic cylinder 9, the rod of which is hingedly connected with the bed 3 and the body with the frame of the trolley 1.

Grinding headstock 10 contains a support table 11 with guides 12, which is firmly connected to the trolley frame 1. A hydraulic cylinder 13 with a double-sided piston 14 is rigidly attached to the table 11. 1 The stem 14 is hinged to the bracket 16, which sits on the guide 12.

The grinding wheel 17 is attached to the faceplate 18, which is seated on the shaft 19, mounted on bearings in the body of the wheelhead and rotated by the electric motor 20 through a textronic transmission 21.

The grinding wheel body 10 has tides 22 in which the rods 23 are fixed, guided by means of guide sleeves 24 with the base 16. Springs 25 are mounted on the rods 23, which are pressed with adjusting nuts 26.

Automatic operation of the device is provided by the limit switches 27, 28 and 29. The limit switch 27 serves to command the cut-off of the hydraulic cylinder 9 when the rail extends from the row and presses it to the grinding wheel; switch 28 - for stopping the trolley 1 when hitting the next rail and giving an impulse to the clamp to the hydraulic cylinders 4 and 7; switch 29 - for stopping the cart in extreme positions. In addition, trolley 1 is equipped with: an oil station 30, which is used to power the hydraulic actuators, a device for dust extraction 31, and a cabinet 32 for electrical equipment.

After a motion command has been issued (by pressing a button), the device is moved along the end of the rack, on which the rails to be ground are laid.

Upon reaching the first rail, the limit switch 28 gives the command to stop the trolley 1.

After that, the hydraulic cylinder 7 is turned on, lifting the lower support 6 together with the rail, thus ensuring the separation of the rail from the rack. Then turn on the hydraulic cylinder 4, which with a sponge presses the rail on top. The force of clamping the rail between the sponge 5 and the n-bearing support 6 with a self-braking wedge significantly exceeds the weight of the rail, thus avoiding slippage when the latter moves or retracts.

After the rail is clamped, the electric motor 20 is automatically turned on, which rotates the shaft 19 through the textronic transmission 21, and with it the plate 18 with the grinding wheel 17. Simultaneously with the start of the engine 20, the hydraulic cylinder 9 turns on, which moves the frame 3 along the guides 8 together with the clamped rail in the direction of the rotating grinding wheel 17.

Resting against the rotating wheel 17, the thrusting rail compresses the springs 25, retracts the grinding wheel 10 until the end switch 27 triggers, which is a command to cut off the hydraulic cylinder 9 and turn on the hydraulic cylinder 13, which gives the circle 17 a reciprocating movement along the end face.

Thus, grinding is carried out until the entire end is planned.

In this case, the command to stop is given in time by tuning.

After the wheel 17 stops, a pulse is given to the movement of the hydraulic cylinder 9 in the opposite direction, which ensures that the grinding rail is installed in its original position in the row, after which the hydraulic cylinders 4 and 7 are reversed and the rail is released from being clamped, which serves as a command to the movement of the trolley 1. The trolley 1 will be move until iroka limit switch 28 finds on the next rail. The cycle is repeated in the sequence described above.

Subject invention

A device for grinding the ends of the rails, made in the form of a base that carries a grinding head and a clamping mechanism that moves in the direction towards the end face, and which includes an upper and lower movable jaws, characterized in that outside it, the base is movable along the rails being machined, and the grinding head carries a spring-loaded circle and is movable along the machined end, while the upper sponge of the mouth clamping mechanism Credited with

moving towards the lower movable sponge equipped with a self-braking wedge; In addition, the device is equipped with a sensor for the presence of rails, the limit switches for automatically stopping the device in extreme positions and when it hits another rail.