SU956694A1

SU956694A1 - Rotary excavator

Info

Publication number: SU956694A1
Application number: SU803242850A
Authority: SU
Inventors: Александр Степанович Крючков; Павел Михайлович Кутьков; Лариса Васильевна Пефтеева
Original assignee: Донецкий Филиал Научно-Исследовательского Горнорудного Института
Priority date: 1980-12-08
Filing date: 1980-12-08
Publication date: 1982-09-07

Description

Изобретение относитс к машинам дл открытых горных работ и касаетс конструкции роторного экскава .тора с верхним расположением контргруза и отвальной консоли, установленной на поворотной платформе.The invention relates to machines for open pit mining and concerns the construction of a rotary excavator with an upper position of a counterweight and a dump console mounted on a turntable.

Известен {юторныв экскаватор, включающий св занную с порталом роторную стрелу, консоль противовеса с т гой, овальную консоль, св занную с порталом посредством т г 1.The known excavator includes a rotary boom connected to the portal, a counterweight and thrust console, and an oval console connected to the portal by means of t g 1.

Однако данный экскаватор имеет высокий центр т жести. However, this excavator has a high center of gravity.

Известен также экскаватор, включающий поворотную платфор 1у, стрелу с.ротором, койсопь противовеса соединенную т гой с пилоном, и канатную полиспастную подвеску, причем консоль противовеса прикреплена к платфо1 1е двум шарнирами, один из КОТОРЫХустановлен на платформе, а другой укреплен на рычаге, жестко соединенном с консолью и опирающемс на платформу. Подвеска стрелы выполнена регулируемой. Второй шарнир и рычаг через вы;слючатель управл ют приводом лебедки ротора и предотвращают перегрузку экскаватора 2.An excavator is also known, which includes a rotary platform 1y, an arrow with a rotor, a counterbalance koysop connected with a pylon, and a rope-mounted polyspast suspension, with the counterweight console attached to the platform 1e by two hinges, one of which is mounted on the platform and the other is fixed on the lever, rigidly connected to the console and resting on the platform. Suspension boom is made adjustable. The second hinge and lever through you; the switch controls the drive of the rotor winch and prevents the excavator 2 from being overloaded.

Однако в данном экскаваторе невелики рассто ние между поворотнойHowever, in this excavator, the distance between the rotary

платформой и консолью противовеса мало и угол между отвальным конвейером и его подвеской, что приводит к возникновению в ферме конвейера, и их опорах значительных усилий от действи Веса конвейера и размещенного на нем грунта. Экскаватор имеет высокий центр т жести.the platform and console of the counterweight is small and the angle between the dump conveyor and its suspension, which leads to the emergence of a conveyor in the farm, and their supports considerable effort from the action of the weight of the conveyor and the soil located on it. The excavator has a high center of gravity.

Цель изобретени - повышение на10 дежности конструкции путем понижени центра т жести экскаватора. ,The purpose of the invention is to increase the design reliability by lowering the center of gravity of the excavator. ,

Поставленна цель достигаетс тем, что роторный экскаватор, включающий установленные на поворотной платформе портал с шарнирно закрепленной на нем роторной стрелой, имеющей подвеску, консоль противовеса, соединенную т гой с порталом и отваль-. ную консоль с подвеской -и приводом The goal is achieved by the fact that a rotary excavator, including a portal mounted on a turntable with a rotary boom hinged on it having a suspension bracket, a counterweight console connected by a pull to the portal and a blade. Suspension and Drive Console

20 подъема, снабжен шарнирной т гой регулируемой длины, св занной с порталом и консолью противовеса, т га св зана с порталом посредством качакнцейс стойки, а подвеска отвальной консоли расположена над консолью противовеса.20 lifting, provided with a hinged pull of adjustable length associated with the portal and counterweight console, tons of ha are connected to the portal via a swing stand, and the suspension bracket of the dump console is located above the counterweight console.

Кроме того, шарнирна т га выполнена из винта и гайки и имеет привод, кинематически св занный сIn addition, the hinge joint is made of a screw and nut and has a drive, kinematically connected with

Claims

30 loivode dump console. FIG. 1 is a diagram of a rotor excavator in advance; FIG. 2 - rotor boom suspension assembly. The rotary excavator includes a rotary platform 1, a portal 2, a rotor lu 3 rotor, a console 4 counterweight, a main weight 5, a swing stand 6, a two-legged stand 7I suspension 8, a winch 9, additional weight 10, a dump console 11, suspension 12, drive 13 lifting dump console and swivel 14. On the turntable 1 rigid. Portal 2 is fixed, and the blade console 11 is rotatably mounted in horizontal and vertical planes. On the portal 2, the rotor boom 3 is hinged, the counterweight console 4, rocking 6, bipedal, 7, and additional gantry. Portal 2 and suspension 12 are interconnected by means of a drive. 13 and swivel 14, which makes it possible to rotate the dump console 11 in the horizontal and vertical plane x. The fixed blocks of the suspension 8 are supported on a two-leg stand 7 and the main thrust 5 is kept from shifting, which is fixed on the console 4 of the counterweight and supported on the swing stand 6. The movable blocks of the suspension 8 are fixed on the boom 3 of the rotor, which are raised and lowered using a winch 9 By excavating the suspension 8, forces arise and are transmitted to the portal 2 by two-leg stand 7, and to the console 4 of the counterweight along the main trunk 5. Most of the effort in step 5 is counterbalanced by a counterweight, less by an additional load 10 transferred to the portal 2c. The forces directed along the arrow 3 are directly perceived by the counterweight 4 of the counterweight, since the hinges of their connection with the portal 2 are aligned. The counterweight console is lowered as much as possible, and the gap between it and the dump console is determined only by safety requirements. An additional 10 bar connects the counterweight console f to the gantry and is made in the form of a screw and a nut with a drive that is kinematically connected with the drive 13 for raising the dump console so that the gap between the consoles is kept constant when they are raised and lowered . Such a connection with sufficient accuracy can be realized with the help of, for example, two villages of synov, mounted on the axles of rotation (lifting) of consoles and included in the control circuits of the respective drives. The angle of elevation of the dump console and, accordingly, the counterweight console does not exceed 18-20®. Therefore, the control of linear barriers of the consoles on the same radii can be replaced by the control of angular displacements. In this rotary excavator, the suspension bracket suspension bracket is located on top of the counterweight console. In the case when the console of the counterweight is lowered as much as possible, and the gap between it and the tail console is raised constant when lifting, the suspension swivel does not have a remote console and is not loaded with significant bending moment due to the tension of the suspension ropes. Increasing the distance between the supports of the dump console increases the angle between the suspension and the farm of the console and accordingly reduces the effort in the elements of the dump console and the suspension. Due to the lowering of the counterweight balance, the height of the center of the excavator's body is reduced. Combining the hinges of the rotor boom and the counterweight cantilever reduces the load on the portal. The drive for the additional weight of the counterweight cantilever is loaded only with a part of the weight of the counterweight and can be the same as the hoist cantilever. Claim 1. Rotary excavator including a portal mounted on a turntable with a rotary boom hinged to it having a suspension, counterweight console connected to the portal and a waste console with a suspension and lifting drive, characterized in that, in order to improve reliability design by lowering the center of gravity of the excavator, it is equipped with a hinged and adjustable length, connected with the portal and counterweight console, with ha. the portal by means of the swing stand, and the suspension bracket of the dump console is located above the counterweight console. 2. An excavator in accordance with claim 1, 1, which is made up of the fact that the hinge rod is made of a screw and nut and has a drive connected kinematically with the drive of the dump 1 {. Sources of information taken into account in the examination 1. USSR Author's Certificate No. 723042, cl. E 02 F 3/22, 1973. -

2. USSR author's certificate No. 157282, CL-. B 02 F 3/18, 1962.

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