Web pipe positioning and processing method for crane fly jib
A processing method and crane technology, applied in metal processing, metal processing equipment, manufacturing tools, etc., can solve the problems of high production cost and difficulty in ensuring the accuracy of the abdominal tube, and achieve improved accuracy, improved positioning accuracy, and convenient reference mark operation Effect
Active Publication Date: 2020-12-08
HENAN SENYUAN HEAVY IND
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Problems solved by technology
[0005] The purpose of the present invention is to provide a method for positioning and processing the abdominal tube of the crane jib, so as to solve the technical problems in the prior art that the production accuracy of the abdominal tube is difficult to guarantee and the production cost is high
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Embodiment Construction
[0029] The method for positioning and processing the abdominal tube of the jib of the crane in the present invention aims to conveniently process inclined surfaces with qualified relative positional relationships at both ends of the abdominal tube. Among them, the structure of the abdominal tube to be processed is as follows: figure 1 As shown, the abdominal tube 1 is a circular tube with an outer diameter of 2R and an inner diameter of 2r, and its two ends are respectively processed with a first slope 11 and a second slope 12, wherein the angle between the first slope 11 and the axis of the abdominal tube 1 is α, such as figure 2 As shown, the included angle between the second slope 12 and the axis of the abdominal tube 1 is β, and the relative rotation angle between the first slope 11 and the second slope 12 around the axis of the abdominal tube 1 is γ.
[0030] Specifically, the steps of Embodiment 1 of the method for positioning and processing the abdominal tube of the c...
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The invention relates to the field of machinery processing and manufacturing, in particular to a web pipe positioning and processing method for a crane fly jib. The method comprises the following steps of step 1, processing a first inclined plane at one end of a web pipe; step 2, putting the web pipe onto a positioning tooling to be positioned, and making a reference mark coplanar with a long axisor a short axis of an oval outline of the first inclined plane onto a corresponding wall surface of the positioned web pipe; step 3, calculating a theoretical value of the height from the reference mark to the horizontal plane after the web pipe rotates around the self axis for an angle gamma; step 4, setting a reference standard on the basis of the theoretical value, enabling the web pipe to rotate around the self axis until the reference mark corresponds to the reference standard, and fixing the web pipe; and step 5, performing inclined plane processing on the other end of the fixed web pipe by using a cutting tool so as to process a vertical plane forming an included angle beta with the axis of the web pipe. The rotating angle of the tubular web pipe is expressed by using the referencestandard, so that the rotating angle of the web pipe can be conveniently observed and controlled so as to position and process the web pipe.
Description
technical field [0001] The invention relates to the field of mechanical processing and manufacturing, in particular to a method for positioning and processing an abdominal tube of a crane jib. Background technique [0002] At present, medium and large-tonnage cranes are generally equipped with a jib. Its function is to dock the jib with the main jib when the length or height of the main jib of the crane is not enough during construction on site, so as to increase the size of the crane jib. scope of work. [0003] The jib of the crane is in the form of a truss frame, including at least three main chords and several web tubes connected between the main chords. One end of the jib is fixed on the corresponding main chord for connecting with the main jib. The connected connecting plates and base plates, and the connecting plates or base plates arranged on different main chords also need to be connected through web tubes to strengthen the structural strength. Since there is a ce...
Claims
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IPC IPC(8): B23D55/00B23D55/04B23Q7/00
CPCB23D55/00B23D55/04B23Q7/00
Inventor 史重阳杨晓锋朱新民谢华华张旭梁可朱书文王凯
Owner HENAN SENYUAN HEAVY IND