SU1131666A1 - Sawing bar for cutting stone - Google Patents

Abstract

CHAIN BAR FOR CUTTING THE STONE, containing a cutting chain with a drive sprocket, a detachable guide with a cavity divided by a fixed partition into two equal parts, and an air-suction unit, characterized in that, in order to improve the performance of the device, it is equipped with a spring-loaded two-petal Y-shaped the flap installed in the cavity of the bar can be rotated, and the length of each of the flaps of the flap is equal to half the width of the cavity of the bar.

Description

The invention relates to the production of building materials and can be used in stone-cutting equipment intended for the extraction and processing of the saw stone,

A known chain bar for sawing stone, containing a tire, a cutting chain, a guide and a drive sprocket, the tire cavity being divided by a diaphragm into two parts of the syringe.

The disadvantages of this design are the high energy consumption of the removal of sawing products, as well as the presence of manual operations to move the diaphragm when changing the cutting direction.

The closest to the proposed device is a chain bar for cutting stone, containing a cutting chain with a drive sprocket, a detachable guide with a cavity, a pneumotbotting unit, a fixed partition dividing the cavity into two equal parts, each of which is provided with figured inserts forming confusing channels forms and is connected by a separate pipe with pneumotraction unit 12.

This device is characterized by the difficulty of connecting the pneumatic ejection device to the corresponding part of the cavity of the bar when changing the cutting direction. In the known device, when changing the cutting direction, it is necessary to stop the cutting chain and manually connect the corresponding nozzle to the air-suction unit, which leads to unproductive simple devices.

The purpose of the invention is to improve the performance of the device.

This goal is achieved by the fact that the chain bar for sawing stone, containing a cutting chain with a drive sprocket, a detachable guide with a cavity divided by a fixed partition into two equal parts, and an air recovery unit, is equipped with a spring-loaded two-lobe Y-shaped gate installed in the bar cavity rotatably, with the length of each of the flaps of the flap being equal to half the width of the cavity of the bar,

Figure 1 shows the chain bar length. sawn stone, figure 2 - view A on. figi

The valuable stone sawing bar contains a cutting chain 1, a drive sprocket 2 and a detachable guide 3. The detachable guide 3 is made of two cheeks 4 and 5, forming a cavity 6, which is divided by a fixed partition 7 into two equal parts. curved inserts 8 forming confused channels 0 can be installed to each part. With pneumatic suction installation, both parts of the Cavity are connected by a common pipe 10. In the cavity of the bar 6 behind the fixed partition 7 is installed with the possibility of rotation around the axis 11 fixed on the cheeks 4 and 5, double-lobe U - The flap 12 is different. The petals of the flap 1 2 are directed oppositely to the air flow and the length of each of them is equal to half the width of the cavity of the bar 6. The flap 12 is held at an average position by a spring 13. The springs 13 can be placed as Inside the cavity 6 and the outer surface 3. Air flows through the passage 14 on both cheeks storony.zaslonki 1.2.

Chain bar for cutting stone works as follows.

Before the start of sawing, an air-suction unit is turned on and air begins to flow into both parts of the internal cavity 6 of the bar, creating the same vacuum in them. The air flows through the slots 14 on both sides of the flap 12 and, on the petals of the air, directed towards the air flow, on the flap 12, balance the winding moments. The valve 12 is in this case held in the middle position by the springs 13.

The drive sprocket 2 drives the cutting chain 1, which moves along the guide 3 and destroys the stone at one of the cutting edges of the bar, depending on the cutting direction. From the moment of sawing into the part of cavity 6 from the side of the cutting edge of the bar that destroys the stone, the access of air from the outside is difficult and the intensity of the flow from this side decreases. This leads to a violation of the equality of torques on the valve 12, and the valve, overcoming the resistance of the springs 13, rotates around the axis 11, closing the slot 14 on the non-working side with the corresponding tab.

5, 1

part of cavity 6, and is kept in this position due to the pressure difference in both parts of cavity 6 bar. At this time, the passage slot 14 on the cutting side is as open as possible, which ensures effective removal of cutting products by a pneumatic suction installation.

At the end of sawing, the springs 13 of the shutter 12 return to their original position with springs 13.

The proposed bar design automatically provides

31666-4

removal of food products from that part of the cavity of the bar, which is adjacent to the cutting chain section, which produces stone cutting. This eliminates the need for stopping the bar to change the direction of the bushes and eliminates manual operations to attach the air-suction unit to the corresponding 10 part of the cavity, which in turn leads to an increase in the productivity of the device and improved working conditions.

Type A

P Figg

Claims (1)

CHAIN BAR FOR SAWING A STONE containing a cutting chain with a drive sprocket, a detachable guide with a cavity divided by a fixed partition into two equal parts, and an air-suction unit, characterized in that, in order to increase the productivity of the device, it is equipped with a spring-loaded double-leaf U-shaped shutter installed in the cavity of the bar with the possibility of rotation, and the length of each of the petals of the shutter is equal to half the width of the cavity of the bar.