SU1298077A1 - Crosscutting unit - Google Patents

Abstract

FIELD: forest industry. The invention makes it possible to increase productivity and to protect the saw blade from emergency situations when cutting timber into assortments. The installation comprises a chain conveyor 1 with a centering roller 2, a pressure roller 3, a low speed roller 4, a main drive with a kinematic chain 7, an additional drive 8 with kinematic chains 10 and 11, a saw machine 12 with a saw disk 13 and a receiving table 14. For disengaged mechanisms there is a free wheeling mechanism 15. The rollers 4 and 16 are mounted on the levers 17 and 18, which are driven by the hydraulic cylinder 21, between the saw machine 12 and the receiving table 14 and are connected to the chain 10 through the kinematic chains 22 and 23 to the roller 11 by means of the mechanism 15 connected to the roller 2. When cutting short length logs, they can be further sorted, and when incorrectly sawn assortments can be returned. 2 Il. with (L 25 / L9 to so o o o 23 Z1

Description

one

The invention relates to the forest industry and can be used in cutting installations and downstream equipment,

The purpose of the invention is to increase productivity and protect the saw blade from emergency situations.

FIG. Figure 1 shows the grinder setting, plan view; in fig. 2 is a view A of FIG. one.

Splitting installation consists of a chain conveyor 1 with a centering roller 2, a pressure roller 3, a low speed roller 4, a main drive of the drive 5 with a single speed motor, a gear 6 and a kinematic chain 7 of an additional drive 8 with a single speed engine, gear 9 and kinematic chains 10 and 11, a saw machine 12 with a saw blade 13 and a receiving table 14

for double sided dumping of assortments.

In addition, it contains a free-running mechanism 15 and an extra high speed roller 16 which, together with roller 4

one

lower speeds are mounted on levers 17 and 18, which are hinged by means of axis 19 fixed on base 20 and connected to hydraulic cylinder 21 for raising and lowering rollers 16 and 4, the latter being installed between saw machine 12 and receiving table 14 and through kinematic chains 22 with smaller and 23 large gear ratios are connected to the kinematic chain 10 of the additional drive 8, which at the same time with its kinetic chain 11 with a large gear ratio through the free-running mechanism 15 is also connected to the centering roll Ikom 2. The installation also contains additional conveyors 24 and 25

Splitting installation work as follows.

After finishing the assembly of the previous timber, the reduced speed roller 4 is in the raised position. When a subsequent whip is supplied, the main drive motor 5 and the valuable conveyor 1 begin to move the whip from the unloading platform (not shown) to the centering roller 2. Here, by disconnecting the main drive motor 5 and turning on the additional drive engine 8, the operator drives the switch

.

m 30 jj 40 45

50 55

298077 2

at reduced speed to the saw blade 13 and produces it repulsing.

After retracting, the operator switches on both drives 5 and 8 and performs the joint acceleration of the whip. In addition, the additional drive 8 through the kinematic chain 11 with an increased gear ratio together with

JO main drive 5 performs

joint acceleration of the whip to intermediate speed, and the additional drive 8 substantially unloads the main drive 5 at this stage.

15 Next, the whip is accelerated briefly by one main drive 5, since the free wheeling mechanism 15 is wedged beyond the intermediate speed. Move the whip

20 with a single actuator, prior to its contact with the high speed roller 16, which, after being removed, is moved to position II. Therefore, after the contact of the whip with the roller 16

35 further acceleration and movement

the whip is carried out by two drives at high speed. In doing so, the whip moves over the receiving table 14,

those. Aweigh. When approaching a given stop position, a command is issued to lower the high speed roller 16 and raise the low speed roller 4. Intensive braking of the whip is carried out, which consists not only in transferring the operation of the auxiliary drive engine 8 to the regenerative braking mode, but also in that part of the stored kinetic energy of the whip is intensively spent on accelerating its rotor through accelerating gear of the gearbox 9, which This serves as a flywheel.

When the speed of the whip is reduced to lower, for example 0.5 m / s, the drives bring it to the stop position, where the motors of the drives 5 and 8 are turned off and the switch is accurately stopped. A command is given to push the saw blade 13 onto the whip and it is opened. After cutting, the sawn-off assortment is moved by the reduced speed roller 4, including (in most cases) with the receiving table 14 lowered to one side or the other. This will reset the sawn assortment, and if it is made in

31

the side of the saw blade 13, then any assortment is no longer in contact with the saw blade 13 and therefore cannot damage it.

After evaluating the subsequent whip, he again, similarly to the previous feed, begins to move to the specified length.

In this case, if bale cut logs are cut out, the installation allows them to be further sorted by separating and dumping short cut assortments to additional conveyors 24 and 25

Additional functionality of this setup also allows for the return of incorrectly sawn assortments.

Claims (1)

Claim 20 Splitting machine containing chain conveyor with centering five 0 a roller, a pinch roller, a roller of reduced speed, articulated levers with a hydraulic cylinder, main and auxiliary drives with kinematic chains, a saw machine and a receiving table, characterized in that, in order to increase productivity and ensure protection of the saw blade from emergency situations, it equipped with a free-wheeling mechanism and a roller of increased speed, which, together with a low-speed roller, is mounted on the levers, while the high-speed and low-speed rollers are located between the saw mill ohm and the receiving table and through a kinematic chain connected to additional drive, which through a freewheel mechanism is also connected to the centering roll by a kinematic chain. Type 3 20 C FIG 2 Editor C, Baker Compiled by Y. Rybinsky Tehred M. Morgeital Proofreader M. Demchik Order 853/18 Circulation 463 VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 Subscription