SU962468A1

SU962468A1 - Excavator seat bearing

Info

Publication number: SU962468A1
Application number: SU802992900A
Authority: SU
Inventors: Владимир Иосифович Хазак; Александр Александрович Бахвалов; Виктор Афанасьевич Карташов
Original assignee: Предприятие П/Я Г-4781
Priority date: 1980-10-08
Filing date: 1980-10-08
Publication date: 1982-09-30

Description

Изобретение относитс к экскаваторостроению и может быть использовано на. одноковшовых экскаваторах с однобалочной руко тью.This invention relates to an excavator and can be used on. shovel shovels with single-bar handles.

Известно рабочее оборудование одноковшоврго экскаватора, включающее ковш, однобалочл1ую руко ть, стрелу и седловой подашпник с боковыми вкладьв11а1 а1 скольжени и резиновыми амрртиз аторами 1. .The working equipment of a single-bucket excavator is known, including a bucket, a single-arm handle, an arrow, and a saddle paddle with side slides and a slip rubber and rubber 1..

Недостатками этой конструкций вл ютс низка долговечность вкладышей и амортизаторов и значительные боковые динамические нагрузки в рабочем .оборудовании в неустановившихс ре,жимах поворота экскаватора, возникающие из-за больших боковых зазоров .между руко тью и седловым подшипником.The disadvantages of this design are the low durability of liners and shock absorbers and significant lateral dynamic loads in the working equipment in unspecified, excavator rotational pressures, arising from large lateral gaps between the arm and the saddle bearing.

Наибрлее близким к предлагаемому вл етс седловой подшипник .экскаватора , содержащий корпусе седлом под руко ть и установленными в отверсти х корпуса пальцами с роликами на них расположенными с возможностью контактировани с руко тью 23.The closest one to the present invention is a saddle bearing of an excavator, comprising a saddle under the handle and the fingers mounted in the openings of the housing with rollers arranged with the possibility of contact with the handle 23.

Однако большие боковые динамические нагрузки при повороте, св занные с боковыми зазорами между руко тью и роликами в услови х линейного или точечного контакта между ними, неHowever, the large lateral dynamic loads during rotation, associated with the lateral gaps between the arm and the rollers under the conditions of linear or point contact between them, do not

позвол ют обеспечить контактной и из гибной прочности роликов и руко ти, что преп; тствует широкому внедрению такого рабочего оборудовани .allow to provide the contact and of the flexural strength of the rollers and the hand that prep; There is widespread introduction of such working equipment.

Цель изобретени - повышение ,надежности и долговечности подшипника.The purpose of the invention is to increase the reliability and durability of the bearing.

Указанна цель достигаетс тем, что в седловом подшипнике экскаватора , содержащем корпус с седлом под This goal is achieved by the fact that in the saddle bearing of the excavator, comprising a housing with a saddle under

10 руко ть и с установленными в отверсти х корпуса пальцами с роликами на них, расположенными с возможностью контактировани с руко тью, каждый палец выполнен с цапфами большого и 10 a handle and with fingers mounted in openings of the case with rollers on them located with a possibility of contact with the handle, each finger is made with large pins and

15 меньшего диаметра, расположенными на концах пальца, причем геометрические оси каждой цапфы и пальца смещены относительно друг друга и отношение рассто ни между осью цапфы меньше20 го диаметра и осью пальца к ргцшусу меньшей цапфы меньше коэффициента трени псшьца в отверстии -корпуса.15 smaller diameters located at the ends of the finger, the geometric axes of each pin and finger are displaced relative to each other and the ratio of the distance between the axle axis is less than 20 diameters and the axis of the finger to the smaller pin axis less than the coefficient of friction of the piston in the hole-housing.

На фиг. 1 показан седловой поДшипннк; на фиг. 2 - сечение А-А на FIG. 1 shows a saddle flange; in fig. 2 - section AA on

25 фиг. 1.25 of FIG. one.

Claims

Saddle bearing includes cor-. Pus 1 with a saddle 2 by the arm 3 and fingers 5 installed in the openings of the 4 body with rollers 6 on them, which are located with contact with the handle 3. Each finger is made with a larger pivot diameter 7 and 8 with a smaller diameter pillar 8. Axles are located at the ends of the finger. The axis 9 of the axles is offset relative to the axis of the 1 finger. The ratio of the distance 11 between the axle axis of a smaller diameter and the axis of the finger to the radius 12 of the smaller axle is less than the coefficient of friction of the finger in the housing bore. The device works as follows. When installing the bucket with the bucket in the ice bearing, the fingers 5 are rotated so as to ensure minimal lateral clearance between the arm and the rollers 6. When the excavator is in operation, the lateral loads from the handle to the rollers are perceived by the fingers in the holes 4 of the saddle bearing housing at any magnitude of the load due to the fact that the moment which unfolds the fingers is less than the moment of friction of the trunnions in the bore of the saddle bearing. The latter is achieved by the fact that the ratio of eccentricity to the radius of the smaller pin is less than the coefficient of friction of the finger in the holes of the housing. The increase in the gap due to the wear of the handle and the rollers is compensated for by the approaching rollers by turning the fingers to the required angle 5. The full stroke of adjustment of one side roller is equal to twice the eccentricity of the Fingers. Thus, minimization of lateral gaps between the arm and the saddle bearing is achieved, as well as the simplicity and efficiency of fixing the rollers relative to the saddle of the podipinik in any position, which provides increased strength and durability of the working equipment. Claims of Invention A saddle bearing of an excavator, comprising a housing with a saddle under the arm and with fingers mounted in openings of the housing with rollers on. they are arranged so as to be in contact with the hand, characterized in that, in order to increase its reliability and durability, each finger is made with trunks of larger and smaller diameter, located at the ends of the finger, the geometric axes of the cashme pin and the finger being offset relative to each other and the ratio of the distance between the axle axis of the smaller diameter and the axis of the finger to the radius of the smaller axle is less than the coefficient of friction of the finger in the hole in the housing. Sources of information taken into account in the examination 1.Perni R.Yu. Mining machines and automated systems for open work. M., Nedra, 1979, p. 175

2. Excavator saddle bearing. ECG-8I. Assembly drawing, 3519.03.Ob.000.SB, 1977 (prototype).

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