Hydraulic step lifting device of adjustable supporting track
A lifting device and crawler technology, which is applied in the field of lifting devices and hydraulic stepping lifting devices, can solve problems such as time-consuming and laborious, difficulty in centering two holes, and difficult to support the synchronous micro-movement of sliders on both sides of the track, so as to improve production efficiency. Save production cost and improve the effect of supporting track simultaneously and quantitatively
Inactive Publication Date: 2013-03-27
CHINA NAT OFFSHORE OIL CORP +2
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Problems solved by technology
[0007] During the adjustment process of the supporting crawler 11, since the lifting equipment must be installed in the pipeline laying line, it is difficult for the lifting equipment to ensure the synchronous micro-movement of the sliders on both sides of the supporting crawler during hoisting, which makes the alignment of the two holes very difficult, time-consuming and laborious
Method used
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[0028] Such as Figure 4 Shown in -5, the present invention comprises: support crawler belt 11, support 14 for supporting crawler belt 11 installation, crawler belt support slider 1 and bearing pin 19, hydraulic stepping device 12, wherein, support 14 is located at the two ends of support crawler belt 11 The main shafts 27 on both sides, which are integrated with the supporting crawler 11, are installed in the crawler supporting slider 1 through the bushing 28, and are arranged in the inner hole of the crawler supporting slider 1 and the slideways 15, 17 on both sides of the bracket 14. The track hole is centered, and then, the support crawler 11 and the support 14 are connected as one through the fastener-pin shaft 19; a hydraulic stepping device 12 is installed in the slideway of the support 14 on both sides of the support crawler 11. When installing, the hydraulic pressure Two holes on the left and right on the base of the stepping device 12 are centered on the H1 holes on ...
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The invention provides a hydraulic step lifting device of an adjustable supporting track. The hydraulic step lifting device comprises a bracket for mounting the supporting track, a track supporting sliding block and a pin shaft; the bracket is arranged at the both ends of the supporting track; spindles at the both sides of the supporting track are mounted inside the crack supporting sliding block; inner holes arranged on the track supporting sliding block are centered to sliding way holes of sliding ways arranged at the both sides of the bracket; and the supporting track and the bracket are integrally connected through a fastening piece. The hydraulic step lifting device further comprises a lug ring, a hydraulic cylinder and a base, wherein the lug ring and the track supporting sliding block are connected; the piston rod of a hydraulic cylinder is connected with the lug ring; the cylinder body of the hydraulic cylinder is fixedly arranged on the base; a displacement sensor is arranged inside the hydraulic cylinder; meanwhile, the hydraulic cylinder is further connected with the hydraulic control system; and a hydraulic step lifting structure is formed through the connection. According to the hydraulic step lifting device provided by the invention, the adjustment operation of the supporting track can be efficiently completed without hoisting equipment, so that the supporting track is synchronously and quantitatively lifted; and the production cost is saved, and the production efficiency is improved.
Description
technical field [0001] The invention relates to a lifting device, in particular to a hydraulic stepping lifting device for a pipe-laying ship with an adjustable support crawler, which belongs to the field of offshore oil engineering. Background technique [0002] As an important part of the development and construction of deep sea oil and gas fields, submarine pipeline laying plays a very important role in the development, production and product export of offshore oil and gas fields. [0003] The adjustable support crawler device is used as the support and guide device for the sea pipe of the pipe-laying ship. It is installed at the sea-entry end of the sea pipe of the pipe-laying line. When the sea pipe moves, the crawler supports the sea pipe to rotate synchronously. [0004] Such as Figure 6 — Figure 9 Shown, existing adjustable support crawler device is made up of support crawler belt 11, support 14, crawler belt support slide block 1 and bearing pin 19. Wherein, the...
Claims
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Login to View More IPC IPC(8): B66F7/08B66F7/28B63B35/03
Inventor 李志刚王福山金瑞健何宁雷江河钟朝廷张雪粉周然王克文周军峰
Owner CHINA NAT OFFSHORE OIL CORP