Pincers device designs the analysis that the problem interferes in the process

Pincers device is with assembling and unassemble lumber is given priority to one kind, be in the exercise machines and tools of round of development on foundation of type fork-lift truck, suit to assemble and unassemble at the large log of haven, forest zone, stow works; The transfer that also can be used at oil field vitta, drill pipe and laid work, and of the stock of spatial circle regulation such as station, dock and thing of irregular chief body ship, can use its to undertake having the operation such as heavy, drawing, it is a kind of efficient, adaptability the fork-lift truck with very strong, relatively extensive use is out of shape machines and tools. At present production company of each fork-lift truck all can produce the pincers device of all sorts of configuration, it is a kind of selling quantity and gain are relatively sizable be out of shape product, because manufacturer of this each fork-lift truck all throws certain labor power and material resources,will consider to design, make multiform pincers equipment. When designing pincers equipment, must analyse pincers device to be in whole operation process, assembly of vice put oneself in another's position the structure that the likelihood appears between oil cylinder of put oneself in another's position of vice of the fluctuation in reaching assembly of vice put oneself in another's position with linkage mechanism of fork-lift truck oneself, pincers or athletic interference circumstance and " dead center " the position. The interference case of pincers equipment is more complex, also concealment quite at the same time, the architect often considers not week or easy oversight, make to production thereby bring trouble and waste; If the problem is interfered not to try to its when the design,appropriate is solved, serious when the failure that will cause a design. From the point of the positional relation of pincers device and fork-lift truck linkage mechanism, general but reduce interferes case big kinds two: The first kind is the interference of pincers unit assembly and fork-lift truck linkage mechanism; The 2nd kind is the mutual interference between oil cylinder of put oneself in another's position of vice of the fluctuation in assembly of vice system unit, pincers. To these two kinds interference undertakes brief analysis below. １ . The interference １ of pincers unit assembly and fork-lift truck linkage mechanism. Assembly of １ pincers unit closes in floor level when fighting the position, rocker and the interference that steel tube strengthens on body issueing clamp. The rocker when graph １ is pincers device to be in position of ultimate tilting back ward in opposite luffing jib is mid interfere case sketch map with what steel tube strengthens on body issueing clamp, right now, the condition that prevents interference is: OO-OD- ｒ > the OO in ε type, graphic representation O, O the distance between 2 o'clock; ｒ -- the external diameter that steel tube strengthens on body issueing clamp; OD -- center of graphic representation rocker arrived at 0 o'clock the distance of D of point of tangency; ε -- in the consideration production installation condition falls, give rocking arm artificially most outside end points and the suitable space that strengthen steel tube; １ . Assembly of 2 pincers unit closes in floor level bottle, on vice put oneself in another's position piece arrive when position of the biggest mouth, circular arc is carried on rocker (or turn circular arc of head of lever of lever of the piston that fight a crock) with on the interference that vice put oneself in another's position strengthens steel tube. The graph is shown 2 times position of ultimate tilting back ward is in in opposite luffing jib for pincers device and on dehisce of vice put oneself in another's position is the biggest (right now pincers oil cylinder achieves the smallest installation to be apart from dimension) when, rocker or turn lever of the piston that fight a crock and on the interference case that vice put oneself in another's position strengthens steel tube. Right now, the condition with this hands-off device is: OO- ｒ - the OO in type of ｒ ＞ ε -- graphic representation O, O the distance between 2 o'clock; ｒ -- go up the external diameter that vice put oneself in another's position strengthens steel tube; ｒ -- take the Duan Yuan on rocker arc and turn the greater value of external diameter of circular arc of head of lever of lever of the piston that fight a crock; ε -- in the consideration production installation condition falls, the person carries circular arc to give rocker to go up (or turn circular arc of head of lever of lever of the piston that fight a crock) as suitable as what strengthen steel tube space; １ . When 3 upper limit uninstalls the position, pull rod and the interference that pincers crock hard steel runs. Because want to satisfy the intensity of vice system structure and stiffness, have enough safety factor, in two join with a hinge board between solder have strengthen armor plate, hydraulic pressure bracket and pipeline are decorated in pull rod and strengthen armor plate the area with this relatively narrow space. The graph is shown 3 times when be pincers device to be uninstalled in perch, pull rod and the interference case that pincers crock hard steel provides. Right now, hands-off condition is: OOS ｉ ｎ (θ ) - D ／ 2 - the OO in type of ｒ ＞ ε -- graphic representation O, O the distance between 2 o'clock; ｒ -- the biggest external diameter of assembly of canal of pincers crock hard steel; θ -- pincers device uninstalls the position in upper limit when, line segment OO and included angle of space of pull rod center; D -- the pull rod width that corresponding dot T is in; ε -- in the consideration production installation condition falls, give the proper clearance of pull rod and steel tube assembly artificially; 2. The mutual interference between oil cylinder of put oneself in another's position of vice of the fluctuation in pincers unit assembly, pincers 2. １ pincers device is in most when packet round diameter, the interference of lever of piston of pincers oil cylinder and bearing pin of join with a hinge of fluctuation vice put oneself in another's position. Because fluctuate,journey of dot of installation of contact of bore with a reamer of vice put oneself in another's position, oil cylinder, oil cylinder reachs other of device of cylinder diameter, pincers specific parameter the special requirement that wait, in the interference that the structure is decorated or piston lever and join with a hinge also can bring about to sell normally when detailed design, at the same time this interference circumstance also is the easiest be ignored by architect place. The graph shows the interference case when be this position 4 times, its hands-off condition is: OOS ｉ ｎ (θ ) - D ／ 2 - ｒ > the OO in ε type -- graphic representation O, O the distance between 2 o'clock; ｒ -- the external diameter of bearing pin of join with a hinge of fluctuation vice put oneself in another's position; The Xu Dongyun of academy of analytic Xu labour that the problem interferes in process of pincers plant design Zhang Yongsheng θ -- pincers is most packet round diameter (general oil cylinder is the greatest distance) when, line segment OO and included angle of space of oil cylinder center; D correspondence nods the piston shank diameter that P is in; ε -- in lever of mature protection piston not below the premise of cut, give the proper clearance of piston lever and bearing pin external diameter artificially; Lead plane is about to maintain below this condition each performance data and structural intensity are basic and changeless, can pass normally adjust, optimize dot of bore with a reamer of fluctuation vice put oneself in another's position and position of oil cylinder installation, or the numerical value that changes some specific parameter below the premise that does not affect an user to use the effect (be like most size of packet round diameter) will achieve the goal that averts interference. 2. 2 pincers device is in most when packet round diameter, go up ear of join with a hinge of vice put oneself in another's position board with reinforcement of chela of body issueing clamp board the interference between. Because issue the seam of two side chela of vice put oneself in another's position it is whole pincers unit is the mainest bear the weight of place, its intensity must get assuring adequately, have fight torque ability enoughly, because of the reinforcement among every chela board the design appears should mix again particularly crucial. All sorts of structural type pincers that sell from before Xu Gong a few years in light of device, user and market have the place welding line or the breakdown of craze of mother capable person is mirrorred, pass the computer actually three-dimensional PRO nucleus of school of ／ E stress, the place also is stress most collect midpoint. Show a picture 5 be in for pincers device most when packet round condition, go up ear of join with a hinge of vice put oneself in another's position board with reinforcement of chela of body issueing clamp board interference at nodding B. In be being designed at present, use normally board place is strengthened to open breach of circular arc form in this with ear of escape join with a hinge board, obtained the good position that satisfies intensity to ask to avoid motion to interfere again already thereby. 2. 3 to inside complex formula pincers, in process of whole exercise work, should go up vice put oneself in another's position crosses body issueing clamp located when horizontal, on the flank outside vice put oneself in another's position often also is strengthened with inside of body issueing clamp even board produce interference. In designing a process, when the transverse space that arranges place of join with a hinge of fluctuation vice put oneself in another's position, consider not to help somebody attain his aim sometimes, often the examination that oversight interferes a gender in whole operation process, cause the undesirable consequence that designs error thereby. In show a picture 6 in, if dimension C is equal to 0 or this numerical value is very little, after production installation or course user aggrandizement work, generation of vice put oneself in another's position is out of shape and affect this device continuity to use. When because personnel of this research and development is in,devising overall plan at first, should stay to dimension C have enough surplus. 3. Brief summary above listed pincers device designs a process merely in a few normally easy happening interfere and the typical position that the architect often compares easy oversight again, actually the interference dot of pincers device still is compared much and mostly relatively concealment, after assembling hydraulic pressure pipeline and its accessory especially, the interference of all sorts of case is to let person expect be less than more, be like: Ear of bore with a reamer and the hard canal that steel tube or join pincers oil cylinder strengthen below body issueing clamp, connect may produce luffing jib and connective of body issueing clamp interference, the influence is uninstalled or close thereby bottle; Inside the limits of whole slew exercise of pincers device, pull rod and two join with a hinge board the reinforcement between board or the interference of hard canal, connect is waited a moment, here no longer give uncecessary details. Reason is in affirmatory pincers plant is overall after plan, use three-dimensional substance or framework model comes school nucleus its move individually athletic interference sex of the position is successful to raising one of second development the rate, waste that reduces material very be necessary. CNC Milling