CN102464268A

CN102464268A - Four-rod-crossing amplitude compensation device

Info

Publication number: CN102464268A
Application number: CN2010105605430A
Authority: CN
Inventors: 吴文发
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-11-16
Filing date: 2010-11-16
Publication date: 2012-05-23

Abstract

The invention discloses a four-rod-crossing amplitude compensation device, which can realize amplitude variation in horizontal direction, and is composed of a cross arm, a rear arm, a short arm, a front arm, a guide wheel, a vertical guide rail, a hanger steel wire rope winding system and a counter weight. The four-rod-crossing amplitude compensation device is characterized in that the upper end of the rear arm is hinged with an upper part of a crane, the middle point of the rear arm is hinged with the middle point of the cross arm, and the lower end of the rear arm is hinged with the lower end of the front arm; the lower end of the cross arm is provided with the guide wheel which can move up and down along the vertical guide rail, and the upper end of the cross arm is hinged with the upper end of the short arm; the lower end of the short arm is hinged with the middle point of the front arm; and the cross arm, the rear arm and the front arm are same in length, and the short arm is 1/2 of the front arm in length. The steel wire rope of the winding system extends along the rear arm to reach a pulley at the lower end of the rear arm after passing through a pulley at the top end of the rear arm, and then hangs downwards after reaching the pulley at the top end of the front arm by extending along the front arm. When the amplitude varies, the guide wheel at the lower end of the cross arm moves up and down along the vertical guide rail, the peal of the front arm moves horizontally, thus the amplitude variation in the horizontal direction of hangers is realized. The four-rod-crossing amplitude compensation device has the advantages of simple structure, low center of gravity, small appearance size, good stability, short guide rail length, easiness in overall arrangement, implementation of ideal horizontal amplitude variation, and saved energy consumption, and can be widely applied to various cantilever cranes.

Description

Four bars intersection amplitude compensation device

Affiliated technical field

Four bars intersection amplitude compensation device is to belong to the level luffing technical scheme that hoisting crane technical field jib class hoisting crane is invented.

Background technology

When hoisting crane carried out loading and unloading operation, in order to reduce the driving power of luffing mechanism, requirement goods in amplitude changing process moved along horizon.The prior art scheme has two big types both at home and abroad at present, i.e. rope compensation method and combination jib method

1, rope compensation method: be mainly used in single boom system, hoist rope length is big, serious wear, and goods suspension length is big in the time of by a small margin, and amplitude of fluctuation is also big, and speed is low, influence handling efficiency, and suspender can only level of approximation move, and it is bigger to consume energy during luffing.

2, combination jib method

The scheme of using both at home and abroad has three kinds

1) four link type combination jib, a suspender level of approximation moves luffing during luffing, and oad is big.

2) double link jib in parallelogram, though can realize level luffing, oad is big, center of gravity is high, poor stability.

3) curve trunk frame combination jib, the boom system poor rigidity, the jib moment of torsion is big during revolution, and resistance to torsion is poor, and oad is big, can only be similar to the realization level luffing.

The boom system quality of above-mentioned three kinds of technical schemes is big, and starting braking force of inertia is big, influences loading and unloading operation speed.The general layout difficulty, poor stability.

Summary of the invention

In order to overcome the shortcoming in the such scheme, the present invention provides a kind of new solution that makes up the jib luffing, and promptly four bars intersection amplitude compensation device can guarantee the suspender parallel motion in amplitude changing process.

The technical scheme that the present invention solves its technical matters is: boom system is made up of postbrachium 1, transposition arm 2, galianconism 3, forearm 4, guide wheel 5, vertical guide rail 6, suspender 7, wire rope roll system for winding 8 and counterbalanced weight 9.Postbrachium 1 upper end and hoisting crane upper articulation, 1/2 place is hinged in the middle of middle 1/2 place and the transposition arm 2, and the lower end of lower end and forearm 4 is hinged; Guide wheel 5 is equipped with in the lower end of transposition arm 2, can move up and down along vertical guide rail 6, and its upper end is hinged with galianconism 3; 1/2 place is hinged in the middle of galianconism 3 lower ends and the forearm 4; The equal in length of postbrachium 1, transposition arm 2 and forearm 4, galianconism 3 is 1/2 of its length; The trend of the steel rope of wire rope roll system for winding 8 is via postbrachium top pulley, arrives head sheave under the postbrachium along postbrachium, after forearm arrives the summit pulley, hangs down again.Transposition arm lower end guide wheel moves up and down along vertical guide rail during luffing, and the forearm end points is parallel motion just, and suspender is realized level luffing.

The invention has the beneficial effects as follows: can guarantee the suspender level luffing, save energy consumption, height of contour is little, and center of gravity is low, and complete machine stability is good, and guide rail size is short, and general layout is easy, and the boom system amplitude is big, and quality is little, rises, braking time is short, can improve handling speed.

Description of drawings:

Below in conjunction with accompanying drawing and embodiment the present invention is further specified.

Fig. 1 uses span winch of the present invention

Fig. 2 uses minor crane of the present invention

Fig. 3 is that minor crane of the present invention is in the work in narrow space situation

Fig. 4 is the application of the present invention in wheel-mounted crane

Fig. 5 is an another kind of assembling form of the present invention

Among the figure 1, postbrachium 2, transposition arm 3, galianconism 4, forearm 5, guide wheel

6, vertical guide rail 7, suspender 8, wire rope roll system for winding

9, counterbalanced weight

The specific embodiment:

Fig. 1 is fixing vertical metal framework on the span winch turn table; Framework front fixed vertical guide rail, four bars intersection amplitude compensation device postbrachium 1 is hinged with the framework top, and transposition arm 2 lower end guide wheels 5 can be along vertical guide rail 6 scroll-up/down; Arm swing after the drive mechanism; Make and can realize the suspender parallel motion, the balance of boom system gravity is to carry out balance by counterbalanced weight 9, and this machine can reduce 15m than the like product height of contour.

Minor crane in Fig. 2 uses channel-section steel to be combined into column and is vertical guide rail 6, and guide wheel 5 is along edge of a wing scroll-up/down in the channel-section steel; The postbrachium upper end prolongs, and counterbalanced weight is arranged in prolongation, because of system's complete equilibrium; Goods is not heavy again, so realize luffing with manpower pulling goods.

Fig. 3 is that minor crane of the present invention carries out the loading and unloading operation scheme drawing at small space (in the freight container or in the truck body).

The wheel-mounted crane that Fig. 4 is to use the present invention to transform; The former jib of wheel-mounted crane is pulled down; The column that has vertical guide rail 6 in the replacing; The upper end of postbrachium 1 is hinged on the column upper end, and postbrachium is connected with counterbalanced weight 9 usefulness levers, and the swing of actuating device (hydraulic actuating cylinder) driven equilibrium weighing arm realizes level luffing.Improved wheel-mounted crane is owing to having increased the space under the jib, so be more suitable for the stacking operation of open-air goods.

Fig. 5 is the span winch of another kind of assembling pattern, because of the boom system position high, below working space big, so be particularly suitable for the loading and unloading operation of freight container.

Claims

1. novel level luffing compensating device, four bars intersect amplitude compensation device, are made up of transposition arm, postbrachium, galianconism, forearm, suspender, guide wheel, vertical guide rail, counterbalanced weight and wire rope roll system for winding; It is characterized in that postbrachium upper end and hoisting crane upper articulation; 1/2 place is hinged in the middle of middle 1/2 place and the transposition arm, and lower end and forearm lower end are hinged, and guide wheel is equipped with in the transposition arm lower end; Can move up and down along vertical guide rail, upper end and galianconism and upper end are hinged.1/2 place is hinged in the middle of galianconism lower end and the forearm, transposition arm, postbrachium, forearm equal in length, and galianconism is 1/2 of a forearm length.

2. according to the described four bars intersection of claim 1 amplitude compensation device, the trend that it is characterized in that wire rope roll system for winding steel rope is by postbrachium top pulley, arrives postbrachium lower end position pulley along postbrachium, after forearm arrives the summit pulley, hangs down again.

3. according to the described four bars intersection of claim 1 amplitude compensation device; The characteristic of its another kind of mount scheme is that postbrachium and hoisting crane centre portion are hinged, and 1/2 place is hinged in the middle of 1/2 place, centre of postbrachium and the transposition arm, and guide wheel is equipped with in the transposition arm upper end; Can move up and down along the vertical guide rail on hoisting crane top; Transposition arm lower end and galianconism lower end are hinged, and the forearm upper end is hinged with the postbrachium front end, and 1/2 place and galianconism upper end is hinged in the middle of the forearm; The steel rope of wire rope roll system for winding arrives head sheave before the postbrachium along head sheave under the postbrachium, after forearm arrives forearm end points pulley, hangs down then.