SU881434A1

SU881434A1 - Globoid worm gearing shaft bearing assembly

Info

Publication number: SU881434A1
Application number: SU792843117A
Authority: SU
Inventors: Константин Иванович Заблонский; Сергей Семенович Гутыря; Иосиф Яковлевич Телис
Original assignee: Одесский ордена Трудового Красного Знамени политехнический институт
Priority date: 1979-08-24
Filing date: 1979-08-24
Publication date: 1981-11-15

Description

Изобретение относится к машиностроению и может быть использовано для силовых передач зацеплением.The invention relates to mechanical engineering and can be used for power transmission gearing.

Известен узел опоры вала глобоидной червячной передачи, содержащий корпус, размещенные в нем подшипники, крышку и винты крепления последней к корпусу [1].A known node of the shaft support of the globoid worm gear, comprising a housing, bearings housed therein, a cover and screws securing the latter to the housing [1].

Недостатком известного узла опоры вала глобоидной червячной передачи являются большие осевые усилия в подшипниках при повышенных температурах.A disadvantage of the known node of the shaft support of the global worm gear is the large axial forces in the bearings at elevated temperatures.

Цель изобретения — разгрузка подшипников от осевых усилий при повышенных температурах.The purpose of the invention is the unloading of bearings from axial forces at elevated temperatures.

Указанная цель достигается тем, что в узлах, крышка и корпус которых выполне- ,5 ны из стали, винты крепления выполнены из термоупругого материала с коэффициентом линейного расширения Д= 2,3· 10⁵ 1/град.This goal is achieved by the fact that in the nodes, the cover and casing of which are made of 5 steel, the fastening screws are made of thermoelastic material with a linear expansion coefficient of D = 2.3 · 10 ⁵ 1 / deg.

На чертеже изображен узел опоры вала глобоидной червячной передачи, общий вид.The drawing shows a node support the shaft of the globoid worm gear, General view.

Узел опоры вала глобоидной червячной Λ передачи содержит корпус 1, размещенные в нем подшипники 2, крышку 3, винты 4 крепления крышки к корпусу 1, вал 5, ре2 гулирующие прокладки 6, уплотнения 7 и дне· танционные втулки 8.The shaft support assembly of the globoidal worm gear Λ contains a housing 1, bearings 2 placed in it, a cover 3, screws 4 securing the cover to the housing 1, shaft 5, adjusting gaskets 6, seals 7 and bottom bushings 8.

В станине при монтаже передачи за счет регулирующих прокладок 6 устанавливается требуемое осевое положение червяка и оптимальные (например нулевые) значения зазоров в опорах. При нагружении передачи в динамике происходит разогрев всех ее деталей и узлов за счет потерь на трение в зацеплении и опорах, что приводит к их тепловым расширениям, пропорциональным соответствующим температурам, линейным размерам и коэффициентам линейного температурного расширения.In the frame when mounting the transmission due to the regulating gaskets 6, the required axial position of the worm and the optimal (for example, zero) clearance values in the bearings are established. When the gear is loaded in the dynamics, all its parts and assemblies are heated due to friction losses in the mesh and bearings, which leads to their thermal expansions proportional to the corresponding temperatures, linear dimensions and linear thermal expansion coefficients.

Предлагаемая конструкция предохраняет подшипники от перегрузки при перезатяжке винтов крепления фланцевой крышки при монтаже, так как любое повышение температуры автоматически вызывает пропорциональное увеличение зазоров.The proposed design protects the bearings from overload when re-tightening the screws securing the flange cover during installation, since any increase in temperature automatically causes a proportional increase in the clearance.

Claims

(54) KNOT OF THE SUPPORT OF THE SHAFT OF THE GLOBOUS WORM GEAR. The invention relates to mechanical engineering and can be used for power transmission gearing. The known shaft support assembly is a globoid screw transmission, comprising a housing, sub-supports, a cover and fastening screws of the latter to housing 1. A disadvantage of the known shaft assembly of a globoid screw transmission is high axial forces in bearings at elevated temperatures. Tdel of invention - unloading bearings from axial forces at elevated temperatures. This goal is achieved by the fact that in the nodes, the lid and body of which are made of steel, the fastening screws are made of a thermoelastic material with a linear expansion coefficient, 310 1 / deg. The drawing shows the assembly of the shaft of the globoid worm gear, a general view. The hub of the globoid worm gear transmission shaft includes a housing I, bearings 2 placed in it, a cover 3, screws 4 fastening the cover to the housing 1, a shaft 5, regulating gaskets 6, seals 7 and remote sleeves 8. In the frame when mounting the transmission due to the gaskets 6 establishes the required axial position of the shaft and the optimal (for example, zero) values of the gaps in the supports. When the transmission is loaded in dynamics, all its parts and assemblies are heated due to losses on the train in engagement and supports, which leads to their thermal expansions proportional to the corresponding temperatures, linear dimensions and linear temperature-expansion coefficients. The proposed design protects the bearings from overloading when reloading the screws for fastening the flange cover to the installation, since any increase in temperature automatically causes a proportional increase in the gaps. Claims of the invention A hub of a globoid worm gear shaft assembly comprising a housing, bearings placed therein, a cover and attachments of fastening the latter to the housing, which he reveals. From the axle forces unloading bearings from axial forces at elevated temperatures, in the nodes, the cover and body of which are made of steel, the fastening screws are made of a thermoelastic material with a linear expansion coefficient L = 2.3-10-5 1 / deg. Sources of information taken into account in the examination I. Reshetov D. N. Details of machines. Ed. 3rd M., “Mechanical Engineering, 1975 (prototype).