SU973357A1

SU973357A1 - Carriage for feeding logs into saw frame

Info

Publication number: SU973357A1
Application number: SU792778477A
Authority: SU
Inventors: Николай Сергеевич Рябов; Михаил Григорьевич Рязанцев; Василий Васильевич Снятков
Original assignee: Софринский Экспериментально-Механический Завод
Priority date: 1979-06-11
Filing date: 1979-06-11
Publication date: 1982-11-15

Description

Изобретение относитс к лесопильному производству и может быть использовано на предпри ти х лесного хоз йства, перерабатывающих низкосортную древесину.The invention relates to sawmill production and can be used in forestry enterprises processing low-grade wood.

Известна тележка дл подачи бревен в лесопильную раму, включающа раму, на которой закреплена на оси клещева головка зажима бревна и ручной механизм поперечного перемещени j.The famous log carriage to the sawmill frame includes a frame on which the clamp head of the log is attached to the axis and the manual transverse movement mechanism j.

Недостатком этой тележки вл етс отсутствие поворотного механизма бревна и значительные нагрузки на раму и подающие вальцы пилорамы, особенно при пилении бревен с большой кривизной и неровност ми.The disadvantage of this carriage is the absence of a turning mechanism of the log and significant loads on the frame and feed rollers of the sawmill, especially when sawing logs with large curvature and unevenness.

Известна также тележка дл подачи бревен в лесопильную.раму, содержаща горизонтальную опору со смонтированными на ней механизмом разворота и рычажньм механизмом зажима бревна , и механизм поперечного перемещени бревна 2.Also known is a log carriage to the sawmill frame, comprising a horizontal support with a turning mechanism mounted on it and a lever clamping mechanism for the log, and a mechanism for lateral movement of the log 2.

Така тележка характеризуетс следующими недостатками.Such a cart has the following disadvantages.

Положение бревна по вертикали в ней определ етс величиной деформации пружин. При большом сжатии пружин бревно в пилораму идет сThe vertical position of the log in it is determined by the amount of deformation of the springs. With a large compression of the springs, the log goes to the sawmill with

наклоном и нижний приемный валец пилорамы после поджати вторым верхним вальцем испытывает значительные нагрузки.tilt and lower receiving roll of the sawmill after pressing the second upper drum is experiencing significant loads.

Кроме того, наличие наклона бревна требует посто нного подъема верхнего ва.льца в момент захода бревна в пилораму.In addition, the presence of the inclination of the log requires a constant rise of the upper va.altsa at the time of entry of the log into the sawmill.

При небольшой деформации пружин, With a slight deformation of the springs,

10 а также при наличии кривизны бревна и большом комле, ролики механизма разворота преп тствуют сходу бревна с тележки, что вызывает пробуксовку вальцев пилорамы и необходимость 10 and also in the presence of the curvature of the log and the big butt, the rollers of the reversal mechanism prevent the log from the carriage immediately, which causes the sawmill to slip and cause

15 принудительного освобождени тележки от бревна. При перемещении зажатой части бревна вверх происходит заклинивание корпуса в направл ющих, верхн пружина зажимного механизма 15 forced release of the cart from the log. When moving the clamped part of the log upwards, the body is jammed in the guides, the upper spring of the clamping mechanism

20 сжимаетс , происходит отрыв бревна от разворотных роликов при этом возникает горизонтальна составл юща силы реакции рычага прижима, что приводит к сдвигу бревна и воз25 можному развороту его относительно продольной оси. Это снижает качество распиловки и может привести к аварии.20 is compressed, the log is torn off from the pivot rollers, and a horizontal component of the down force force of the down pressure lever arises, which leads to a shift of the log and its possible reversal relative to the longitudinal axis. This reduces the quality of sawing and can lead to an accident.

Claims

The aim of the invention is to increase reliability. This goal is achieved by the fact that the clamping mechanism of the log is mounted on a horizontal support by means of a frame hinged to them which is spring-loaded relative to the horizontal support. Figure 1 shows a side view trolley; Fig. 2 is the same, plan view. The cart includes a horizontal support 1, on which a turning mechanism 2 is fixed, a transverse movement mechanism 3 and a lever clamping mechanism 4 mounted on a movable hinge frame 5 fixed on the transverse movement mechanism 3 and spring-loaded springs 6. The device operates as follows. The log arriving at the sawing is placed with the rear end on the toothed rollers of the turning mechanism 2. By switching on the appropriate drives, the log is turned along the curvature and clamped. If necessary, the position of the log is adjusted by the transverse movement mechanism 3. When the log is pressed by the second sawmill shaft, the log is hung out and the clamping mechanism 4 in the process of sawing tracks the trajectory of the end of the log in a vertical plane. The proposed log locking device on the feed carriage allows sawing of logs with a large curvature, unevenness and zakomelistost, i.e. low grade wood, and increase reliability. The invention of the cart for feeding logs into the sawmill frame, containing a horizontal support with a spreading mechanism mounted on it and a lever mechanism for clamping the log, and. the mechanism for transverse movement of the log, in order to increase reliability, the clamp mechanism of the log is mounted on a horizontal support by means of a frame hinged to it, which is spring-loaded relative to the horizontal support. Sources of information taken into account in the examination 1. A. Faller. et al. Sawmill equipment, M., Lesna industry, 1975, p. 162-163.

2. Authors certificate of the USSR 362690, class, 27 B. 29/08, 1971 (prototype).