Patent EA-000749-B1 (EA)
Title: Machine for uncovering a pipeline and operating element
Inventor: BYKOV A V
IPC: E02F9/24
Filed: 1998-01-09
Abstract: 1. Machine for uncovering of a pipeline, comprising a base underframe (1) and working machinery (2) which incorporates a frame (3) with a device (4) for clearing away earth, which is hinged to the base underframe (1) with the capability of turning in the horizontal and vertical planes, an operating element (5) which is made in the form of chain portions (19) mounted on the frame (3) with the device (4) for clearing away earth, a contour follower (6) made in the form of a support (27) on pipeline (7), which is hinged with the ability of turning in the horizontal and vertical planes, and a device to control the position of the working machinery with respect to the pipeline (7), characterized in that working machinery (2) is fitted with a power drive (15) for turning in the vertical plane of the frame (3) with the device (4) for clearing away earth, and means (16, 17) for securing the latter against turning in the horizontal plane, the contour follower (6) is fitted with an arm (26) which is mounted on a hinge with the ability of turning in the vertical plane and which carries the above support (27) on the pipeline (7), and means (38) for locking the above arm (26), the operating element (5) is fitted with a power drive (22), whereas its chain portions (19) are mounted with the ability of turning in the vertical plane on axis (20) of drive shaft (21) by means of aforementioned power drive of the operating element (5). 2. Machine of claim 1, characterized in that the frame (3) with the device (4) for clearing away earth is fitted with at least one support on the ground (60) located in front of the operating element (5) and is connected to base underframe (1) with the ability of turning in the horizontal plane on an additional axis (12 or 13). 3. Machine of claim 2, characterized in that the support (60) on the ground is fitted with a power drive (63) and is mounted with the ability of linear displacement along the longitudinal axis of the working  machinery (2) by means of the above power drive (63) of the support on the ground (60). 4. Machine of claim 1, characterized in that the means (16, 17) for securing the frame (3) with the device (4) for clearing away earth against turning in the horizontal plane, incorporate a power drive (17) for turning of the above frame (3). 5. Machine of claim 1, characterized in that at least part of the arm (26) of the contour follower (6) to which the support (27) on the pipeline (7) is fastened, is mounted with the ability of turning in the horizontal axis. 6. Machine of claim 5, characterized in that the outputs of the device to control the position of the working machinery (2) with respect to the pipeline (7) are connected to the inputs of the device (127, 128) for control of the power drive (17) for turning in the horizontal plane of the frame (3) with the device (4) for clearing away earth. 7. Machine of claim 1, characterized in that the arm (26) of the contour follower (6) is mounted on the operating element (5), whereas the means (38) for locking the above arm (26) are made in the form of the power drive (38) for its turning. 8. Machine of claim 7, characterized in that the operating element (5) is fitted with a cross-piece (39) mobile in the through holes (40) of the frames (25) of its chain portions (19), and the elements (48, 49) for locking the cross-piece (39) with respect to the above frames (25), here the arm (26) and the power drive (38) of the contour follower (6) are mounted on the above cross-piece (39). 9. Machine of claim 1, characterized in that the support (27) on the pipeline (7) of the contour follower (6) is made as a slide block (27) whose base (31) is made in the form of a part of the outer surface of the pipeline (7), whereas the front part is made in the form of a wedge (30), here an opening (34) is provided in the slide block (27) along its longitudinal axis, and its rear end face (35) carries spring-loaded rippers (36) located opposite to the opening (34).  10. Machine of claim 1, characterized in that the outputs of the device to control the position of working machinery (2) with respect to the pipeline (7) are connected to the inputs of the device (116, 117) for control of the power drive (22) of the operating element (5). 11. Machine of claim l, characterized in that the device to control the position of the working machinery (2) with respect to pipeline (7) is made in the form of a computer (94) with the input device (95), sensors (96, 97, 98) of the angles of rotation of the working machinery (2) connected with the inputs of the computer (94), and signaling means (99, 100, 101) of the position of the working machinery (2) with respect to the pipeline (7), connected with the computer outputs (94). 12. The operating element (5) incorporating two chain portions (19) with the coaxial drive shafts (21) connected with the frame (3) and machine transmission, and slope-forming mechanism (64) made in the form of two back-slopers (65) connected by their ends to tension shafts (66) of chain portions (19) and to the mounted on the frames (25) of the latter, L-shaped arms (68) which are connected to each other by a tie (70), characterized in that it is fitted with a removable power drive (90), here the drive shaft (21) of each chain portion (19) is made in the form of an inner shaft (78) which is connected to the frame (3) and machine transmission, an outer shaft (79) which is connected to the frame (25) and the chains (85) of the chain portion (19) and is mounted on inner shaft (78) with the ability of displacement along it and, at least, two split distance sleeves (89) located between bearing supports (80, 82) of the inner (78) and outer (79) shafts, which are fitted with fasteners (91, 92) for mounting on them the removable power drive (90), whereas the above tie (70) of the slope-forming mechanism (64) is made telescopic with the lock (73) of its inner (74) and outer (75) elements.