Excavating – Ditcher – Having endless digger
Patent
1999-08-30
2000-11-21
Novosad, Christopher J.
Excavating
Ditcher
Having endless digger
37464, 37466, E02F 506, E02F 510
Patent
active
061485497
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention pertains to the construction earth-moving machinery for overhauling of the main oil pipelines, gas pipelines, or pipelines for other purposes, namely machines for uncovering pipelines of a broad range of diameters, with the trench working much lower than the lower generatrix of the pipeline for digging under it in repair of the pipeline in the trench without its lifting. Furthermore, the invention pertains to the operating elements, predominantly of machines for uncovering of pipelines.
PRIOR ART
Known is a machine for uncovering of a pipeline, comprising a base underframe and working machinery including the contour follower made in the form of an arm mounted with the ability of turning in the vertical plane by means of the spring clamping device, and support on the pipeline, which is rigidly mounted on the arm and is made in the form of a screw blade picker (USSR Auth. Cert. No.607897, IPC: E02F May 2, 1975).
The disadvantage of the known machine is the impossibility of moving the arm into the transportation position and back, as well as impossibility of transferring a great support pressure to the pipeline, as a result of the support being made in the form of a picker.
Known is a machine for pipeline uncovering, comprising a base underframe and working machinery incorporating a frame with a device for clearing away earth and a rotor sectioned operating element, which is hinged to the base underframe with the ability of turning in the horizontal plane on two axes and in the vertical plane, and the contour follower made in the form of a wheel support on the ground, which is rigidly mounted on the above frame (USSR Auth. Cert. No.692945, IPC: E02F May 8, 1975).
The disadvantages of the known machine are the large overall dimensions and low maneuverability in the transportation and working position. The ability of the working machinery to turn in the horizontal plane on two axes does not practically improve the machine maneuverability in view of the absence of the power drive for turning the frame with the device for clearing away earth in the longitudinal plane, and impossibility of changing the position of the center of turn of the base underframe.
Known is a machine for pipeline uncovering, comprising the base underframe and the working machinery incorporating the frame with the device for clearing away earth and rotor sectioned operating element, which is connected to the base underframe with the ability of turning in the horizontal and vertical planes, and the contour follower made in the form of a support on the ground, with wheels. Here, in order to provide the turning in plan on an axis located in front of the center of turn of the base underframe, the connection of the latter with the frame is made in the form of a curvilinear beam with a carriage moving along it (USSR Auth. Cert. No.484288, IPC: E02F May 8, 1971).
Use in the known machine of the curvilinear beam with the carriage, does not yield a reduction in the machine overall dimensions or an essential increase in its maneuverability, in view of the impossibility of providing a great angle of rotation in plan of the base underframe and the working machinery. Moreover, the availability of a curvilinear beam with a carriage in the design, makes its design more complicated and lowers its reliability under high working loads.
Known is an earth-moving machine comprising the base underframe and the working machinery incorporating the frame with the device for clearing away earth and a chained operating element, which is hinged to the base underframe with the ability of turning in the horizontal and vertical planes. Here, the working machinery has power drives for its turning in the horizontal and vertical planes, and the operating element is fitted with a power drive and is mounted with the ability of forced rotation in the longitudinal plane on the axis of the drive shaft by a power drive (USSR Auth. Cert. No.184732, IPC: E02F, 1965).
The known machine has small overall dimensions and high maneuverability in
Bykov Alexandr V.
Chernaev Valery D.
Dzhardzhimanov Alexandr S.
Ibragimov Marat Sh.
Kumylganov Alexandr S.
Aktsionernoe Obschestvo OtkrytogoTipa Aktsionernaya Kompania Po
National Stock Company
Novosad Christopher J.
Obschestvo S Orgranichennoi Otvetstvennostju Nauchnoissledovatel
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