RU2556141C1 - Device for cleaning of paving from ice and condensed snow - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: device contains a cutting body designed as a rotating disk. On the disk elastic and deformable pins are fixed in two rows. The pins are placed on concentric circles. On the lower ends of pins the cutting elements of knife type are rigidly fixed. Pins are made from a piece of steel cable. The amounts of pins in rows are the same. The cutting elements are rigidly attached to one pin from each row.

EFFECT: device reduces the specific cutting resistance and increases productivity of roadbed cleaning due to connection of each pin of the same row with the common cutting element with a pin of the second row.

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Description

The invention relates to techniques for cleaning road surfaces, mainly instrument-dural zone.

In the general case, to clean roads and sidewalks from ice, a self-propelled chassis is used with a working body mounted on it, which is a cutting device that rotates on a horizontal or vertical shaft [1-5]. For clearing areas of the road, limited by curbs, wheel chippers and fences, it is more efficient to use ice pickers with rotating cutting bodies on a shaft that is vertical or inclined to the plane [1-4]. They provide a higher quality of surface cleaning in comparison with an ice picking machine equipped with a horizontal milling cutter. In device III, a plurality of non-driven, freely rotating cutting disks mounted at an angle to the direction of movement of the machine are installed on the working disk.

In this device, cutting is carried out due to the inertia of the machine, and the disks play the role of a figured plow that biases the cut material from the strip being cleaned. The performance of such a device is low and with a large thickness of ice, its operation becomes impossible. In the device [2] there is one drive disk with destructive elements located along its perimeter in the form of pointed needles or pins. To expand the coverage area, the disk is mounted on a crank. This device can be used to clean ice of small thickness. A combination of devices [1] and [2] is device [3], in which the non-drive discs are replaced by freely rotating cones mounted on a rotating cross from flexible spokes that allow the cones to make slight reciprocating vibrations in a circular motion. The cutting elements are made on the lateral surface of the cones in the form of sprocket teeth. Due to the lack of drive of the cutting elements, the device [3] has no special advantages compared to the device [2]. More effectively the destruction of ice is achieved by the device [4], containing rotating disks with a cutting body and a supporting body with cutting knife elements at the end.

Its disadvantage is the impossibility of maintaining a relatively constant bevel of the cutting edge of the cutters, with a decrease or absence of which the energy consumption for cutting increases due to an increase in resistance to ice cutting. A significant variation in the angle of the bevel is facilitated by the appearance of a large torsion moment around the axis of the pin under the action of the cutting resistance force, the total component of which is offset from the axis of the pin to the tip of the cutting element. For this reason, surface cleaning performance has to be limited in order to reduce the layer thickness cut by each cutter.

As a prototype adopted the device [4].

The objective of the invention is to provide a device for cutting ice and compacted snow from the road surface, which allows to increase the thickness of the cut chip layer by maintaining a relatively close to the optimal value of the bevel angle of the cutting edge of the cutting element.

The technical result, which consists in eliminating these drawbacks of the device for cleaning the road surface from ice and compacted snow, containing a working body in the form of a rotating disk with elastic-deformable pins fixed on it in two rows, arranged in concentric circles, with a pin fixed to the end of each pin knife-type cutting element, is achieved by the fact that the cutting element is made longer and attached to one pin from each row and to ensure this in each row I install t equal number of pins.

Thus, the invention allows to increase the performance of ice shearing and to lower the specific energy consumption per unit of cleaned surface.

The proposed device for cleaning the pavement from ice and compacted snow contains a disk 2 rotating on the drive shaft. On the disk in 2 rows around the circumference are fixed one end of the pin 3. On the other end of the pin, the knife-type cutting element 4 is rigidly attached, connecting one pin of the first row with one pin of the second row. The offset of the pins in the rows ensures an optimal bevel of the cutting edge of the cutting element during the cutting process, and the fastening of the pin of one row with the pin of the other row allows you to keep the bevel of the cutting element close to the optimum and partially extinguish the torque that occurs when cutting due to the twisting of both connected pins, serving simultaneously and torsion energy-saving device. The energy absorbed by twisting the pins later returns to ice cutting, reducing the total energy consumption for cleaning the surface 5.

Example 1. A platform with a disk mounted on the drive shaft, rotating at a peripheral speed of 6 s ^-1 , with 22 pins of an elastic hardened rod 150 mm long fixed to it in each row, at the lower ends of which cutters with a sharpening angle of 40 degrees are rigidly fixed , with an angle of inclination of the cutting edge to the radius of arrangement of incisors of 20 degrees, blade length of 50 mm and a width of 30 mm when moving with an electric winch with a constant tension force (1500 N), a strip cleaning speed of 13.6 m / min is achieved with a width of 0.8 m. cutting is 320 N / cm width of the cutter.

Example 2. A platform with a disk mounted on the drive shaft, rotating at a peripheral speed of 6 s ^-1 , with 22 pins fixed to it in each row from a piece of steel traction rope 150 mm long, at the lower ends of which cutters with a sharpening angle of 40 are rigidly fixed degrees, with a bevel angle of the cutting edge to the radius of the cutter arrangement of 20 degrees, a blade length of 50 mm and a width of 30 mm when moving with an electric winch with a constant tension force (1500 N), a strip cleaning speed of 16 m / min is achieved with a width of 0.8 m. Specific cutting resistance compose 260 N / cm width of the cutter.

Example 3. A platform with a disk mounted on the drive shaft, rotating at a peripheral speed of 6 s ^-1 , with 22 pins fixed to it in each row from a 150 mm length of steel traction rope at the lower ends, a cutter is rigidly attached to one pin from each row with a sharpening angle of 40 degrees, with a bevel angle of the cutting edge to the radius of the cutter arrangement of 20 degrees, a blade length of 50 mm and a width of 65 mm, when the platform moves with an electric winch with a constant tension force (1500 N), a strip cleaning speed of 21 m / min is achieved with a width of 0.8 m. specific the cutting resistance is 180 N / cm of the width of the cutter.

Thus, the rigid connection of the pins from different rows with a common cutter (Example 3) reduces the specific resistance to cutting by 1.44 times and increases the cleaning performance of the pavement by 1.32 times.

Replacing an elastic pin from a bar with pins from a segment of a steel traction rope reduces the specific resistance to cutting by 1.23 times and increases the productivity of cleaning the road surface by 1.17 times.

Information sources:

1. Patent of Russia No. 2396389, IPC E01H 5/12. The working body for the removal of snow-ice roll from the surface of roads and airfields / Zhelukevich RB, Ganzha VA, Bezborodov Yu.N. - No. 2009121899/11; declared 06.06.2009, publ. 08/10/2010, Bull. No. 29.

2. USSR author's certificate No. 1677154, MKI 5 E01H 5/12. Device for removing ice from pavements / Ivanov V.G. - No. 4697431/11; declared 04/11/1989; publ. 10/15/1991, Bull. Number 34.

3. Patent of Russia №2022082, IPC5 Е01Н 5/12. The working body for cleaving snow-ice formations / Ermilov AB - No. 92009421/11; declared 12/02/1992, publ. 10/30/1994, Bull. Number 36.

4. Patent of Russia No. 2267575, IPC E01H 5/12, E02F 3/10. Device for cleaning the surface of ice, compacted snow and / or soil treatment / Pogorelsky SV. - No.2000120123 / 11; declared July 27, 2000, publ. 01/10/2006, Bull. No. 1.

5. USSR author's certificate No. 13700177, MKI E01H 5/12. Ice breaking machine / Alekseev G.M., Andreev Yu.S., Belyaev I.P., Vasiliev A.G. et al. - No. 4096219 / 40-11, declared 08/19/1986; publ. 01/30/1988, Bull. Number 4.

Claims (1)

A device for cleaning the road surface from ice and compacted snow, containing a working body in the form of a rotating disk with elastic-deformable pins fixed on it in two rows, arranged in concentric circles, with knife-type cutting elements rigidly fixed at the lower ends of the pins, characterized in that the pins are made of a piece of steel cable, the number of pins in the rows is equal, and the cutting elements are rigidly attached to one pin from each row.

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