CN100494041C

CN100494041C - Traction driven shearing fork telescopic lifting mechanism

Info

Publication number: CN100494041C
Application number: CNB2005100603264A
Authority: CN
Inventors: 倪既民
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-08-08
Filing date: 2005-08-08
Publication date: 2009-06-03
Anticipated expiration: 2025-08-08
Also published as: CN1730371A

Abstract

A drawing draws drive shear fork expansion and contraction lifting gearing forms from shear fork column, block, alachlor and drawing draw drive gear. It draws by anchoring and controlling the alachlor, which string through each block. It drives the shear fork mechanism expansion and contraction lifting support by changing or limiting the change of the included angle of the shear fork arm by force deliver by the block and alachlor. It can be used in many application and it got many actuation and high power, Part or all shear fork columns can use drawing draw drive during the lift of the association shear fork expansion and contraction lifting gearing, The drawing draw drive can be formed from a group or two of block and alachlor in a same shear fork column. And make the shear fork machinery meet the challenge of each loaded area and load. It is reasonable in strution and is in stable expansion and contraction, support fast and broad in usage. It is simple in structure, save material, light empty weight, easy to make and high efficiency. The invention can be use in all kind of fork lifts, and serves in fields of architectural decoration mount work, lifting hoisting forwarding working machinery, up-down movable pylon and so on.

Description

Tractive driven shearing fork telescopic lifting mechanism

Technical field

The present invention relates to a kind of improvement of scissors mechanism telescopic lifting type of drive.Especially the shearing fork telescopic lifting mechanism that drives by the drag-line tractive.

Background technology

In the prior art, with scissors mechanism as telescopic lifting be supported on produce and daily life in quite extensively general application is arranged, they all are to drive scissors mechanism by screw rod or pneumatic-hydraulic cylinder to realize the lift telescopic variation usually; Especially be that the scissors fork elevating machine that drives, platform, frame, ladder etc. have formed numerous series of products with the hydraulic actuating cylinder, various facilities or operation field such as be widely used in ascending a height, promote, transport.Resemble Chinese patent " a kind of autocontrol hydraulic lifting ladder " 95209483.5, " wall tunnel type hydraulic elevating platform " 03229183.8 etc., its innovation is to place position very to promote to change the scissors rod angle hydraulic actuating cylinder to drive shearing fork telescopic lifting support.Yet, though drive with hydraulic actuating cylinder and to cut fork row telescopic lifting power powerful flexible movements, but it must pressurize from oil pump, pipeline is carried, high pressure control is done work to oil cylinder, system complex, mechanism is various, parts are accurate, especially pressure duct and control system, in case faults such as generation leakage will seriously jeopardize safety, so it ensures that setting again must be especially thorough complete.Simultaneously, oil hydraulic cylinder also is difficult to the state that can remain unchanged for a long time under heavy load.In a word, the volume macrostructure is numerous, make difficult cost height, safeguard tired fault frequently, the safe differential limitation is many, is that Driven by Hydraulic Cylinder is cut the obvious deficiency that the lifting of fork mechanical-stretching is supported.

Summary of the invention

The objective of the invention is to provide a kind of new shearing fork telescopic lift drive mechanism or device, it makes strength transmission by drag-line and pulley, and the tractive that stops with the folding and unfolding of control drag-line drives the scissors rod variable angle, realizes telescopic lifting.

The object of the present invention is achieved like this: tractive driven shearing fork telescopic lifting mechanism constitutes by cutting fork row, pulley, drag-line and tractive driver train etc.The described fork row cut are cut the stacked formation of fork by a plurality of two scissors rods (1) middle part through what the bearing pin cross-under intersected to form; Tractive driven shearing fork telescopic lifting mechanism is formed V-type, triangular form, four limit types or double V-shaped combination by some fork row structures of cutting, in the scissors mechanism that combines, one group or two groups of wheels arrangements are in each crosslinked contact of scissors rod of cutting the fork row, one group or two groups of drag-lines link up serials between each pulley, the tractive driver train drives and the control drag-line tightens up, release or static tractive, changes or limits scissors rod variable angle state through drag-line and pulley transfer function strength and support to drive the flexible telescopic lifting of scissors mechanism.Tractive driven shearing fork telescopic lifting mechanism application pattern is numerous, operating power is powerful, in combined scissors fork mechanism telescopic lifting, can be listed as the driving of application tractive by wherein partly cutting to pitch row or all cut fork by mechanism; Can form the tractive driving by one group of drag-line and pulley or by two groups of drag-lines and pulley same cut in the fork row.

Tractive driven shearing fork telescopic lifting mechanism rational in infrastructure stable, flexible steadily reliable, firm supporting is strong, of many uses various.Compare with the hydraulic-driven scissors mechanism, its mechanism's letter material is economized from heavy and light, is made the low effect height of easy cost.Can be widely used in mechanical equipments such as various scissors fork elevating machines, platform, frame, ladder, serve comprehensively building decoration engineering construction, lifting promote transport Work machine, lifting moving changes king-post board frame or the like field

Description of drawings

Below in conjunction with the accompanying drawing signal principle of compositionality of the present invention and embodiment are described further:

Fig. 1 cuts in the fork row one group of drag-line 3 and pulley 2 at one to form and forms the telescopic lifting principle by drag-line 3 serials in 2 scissors rod 1 variable angle states through tractive driver train 4 tractive driven shearing forks row of pulley and illustrate.

Fig. 2 cuts in the fork row two groups of drag-lines 3 and pulley 2 at one to form and form the telescopic lifting principle by drag-line 3 relative serials in 2 scissors rod 1 variable angle states through tractive driver train 4 tractive driven shearing forks row of pulley and illustrate.

Fig. 3 is that each cuts the fork row are made of the tractive driving one group of drag-line 3 and pulley 2 tractive driving combination shearing fork telescopic lifting mechanism example in a kind of V-type supporting, expanding and lifting mechanism for combined shear fork.

Fig. 4 be in a kind of triangular form supporting, expanding and lifting mechanism for combined shear fork wherein two cut fork row each formed tractive that tractive drives by two groups of drag-lines 3 and pulley 2 and drives and make up the shearing fork telescopic lifting mechanism example.

Fig. 5 is relative in a kind of four limit type supporting, expanding and lifting mechanism for combined shear fork two and cuts the fork row each is formed tractive that tractive drives by two groups of drag-lines 3 and pulley 2 and drives and make up the shearing fork telescopic lifting mechanism example.

Fig. 6 separates in the double V-shaped supporting, expanding and lifting mechanism for combined shear fork each and cuts the fork row and forms tractive that tractive drives by one group of drag-line 3 and pulley 2 and drive and make up the shearing fork telescopic lifting mechanism example a kind of.

(1) is scissors rod among the figure, and (2) are pulley, and (3) are drag-line, and (4) are the tractive driver train, and (5) are mobile slideway, and (6) are base and top frame.

The specific embodiment

In concrete enforcement, tractive driven shearing fork telescopic lifting mechanism can be made multiple pattern and style, is applied to multiple telescopic lifting supported mechanical equipment or operation field.Accompanying drawing 1 is illustrated in one and cuts the principle of being made of the tractive driving in the fork row one group of drag-line 3 and pulley 2.Accompanying drawing 2 is to form the principle signal that tractive drives same cutting in the fork row with two groups of drag-lines 3 and pulley 2.Among the tractive driving principle figure, pulley 2 is disposed at each crosslinked node of the scissors rod 1 of cutting the fork row, drag-line 3 links up serial between each pulley 2, tractive driver train 4 drives and control drag-line 3 tightens up, release or static tractive, changes or limit scissors rod 1 variable angle through drag-line 3 and pulley 2 transfer function strength to drive the flexible telescopic lifting of scissors mechanism and support.Accompanying drawing 3 to Fig. 7 is that tractive driven shearing fork telescopic lifting mechanism example: Fig. 3 that practices in multiple combined scissors fork machinery is the application example of V-arrangement angle formula combined scissors fork machinery; Fig. 4 is the application example of triangle angle formula combined scissors fork machinery; Fig. 5 is the application example of quadrangle angle formula combined scissors fork machinery; Fig. 6 is the application example of two V-arrangement angle formula combined scissors fork machineries.In these application examples, scissors rod 1 is a tubular material, and drag-line 3 and pulley 2 parts are placed through in the tube chamber, make physical construction succinctly solid and reliable; Its combined scissors fork mechanism telescopic lifting is existing partly to be cut fork row or is used tractive and drive by all cutting the fork row by mechanism, again by cutting in the fork row by one group or forms the tractive driving by two groups of drag-lines and pulley same.Tractive driven shearing fork telescopic lifting mechanism can be applied in the various combined scissors fork machineries with numerous pattern styles when practicing according to actual needs; Scissors rod 1 can be tubing or other section bar of various materials, and drag-line 3 can be rope or the chain cable that metal or other material are made, and pulley 2 can be according to the preparation of drag-line 3 patterns, and tractive driver train 4 can be used any power pattern and control method.In the application, drag-line 3 and pulley 2 patterns are various but cheap for manufacturing cost, and the optional rated load that is multiple times than standard of selecting of drag-line 3 intensity requires to dispose, and give mechanical safety control safe against all possibilities.

Claims

1, a kind of tractive driven shearing fork telescopic lifting mechanism comprises: cut fork row, pulley, drag-line and tractive driver train, it is characterized in that: the described fork row of cutting are cut the stacked formation of fork by a plurality of two scissors rods (1) middle part through what the bearing pin cross-under intersected to form; Tractive driven shearing fork telescopic lifting mechanism is formed V-type, triangular form, four limit types or double V-shaped combination by some fork row of cutting, in the scissors mechanism that combines, one group or two groups of pulleys (2) are disposed at each crosslinked node of scissors rod (1) of cutting the fork row, one group or two groups of drag-lines (3) link up serial between each pulley (2), tractive driver train (4) drives and control drag-line (3) tightens up, release or static tractive, changes or limits the flexible telescopic lifting support of scissors rod (1) variable angle state-driven scissors mechanism through drag-line (3) and pulley (2) transfer function strength.

2, tractive driven shearing fork telescopic lifting mechanism according to claim 1 is characterized in that: in the described tractive driven shearing fork telescopic lifting mechanism same cut fork row by one group of drag-line (3) and pulley (2) forms tractive driving or two groups of drag-lines (3) with pulley (2) relative serial form the tractive driving, perhaps whole tractive driven shearing fork telescopic lifting mechanism is cut fork row by its part and is used one group or two groups of drag-lines (3) and pulley (2) and forms tractive and drive, and perhaps whole tractive driven shearing fork telescopic lifting mechanism is all cut fork by it and is listed as and uses one group or two groups of drag-lines (3) respectively and pulley (2) is formed the tractive driving.