CN102491128B - Parallelly-linked tension loading device for wound bundles - Google Patents

Abstract

A parallelly-linked tension loading device for wound bundles belongs to the technical field of pre-stress winding equipment, and comprises a resistance loading device, a driving tension loading wheel set and at least one driven tension loading wheel set. Each tension loading wheel set consists of a connecting shaft, a loading wheel and a loading gear, wherein the loading wheel and the loading gear are mounted on the connecting shaft. The connecting shaft of the driving tension loading wheel set is connected with an output shaft of the resistance loading device, a loading shaft of the driving tension loading wheel set and loading shafts of the driven tension loading wheel set are mutually staggered in parallel array, the loading gear of the driving tension loading wheel set is meshed with the loading gear of the first driven tension loading wheel set, and the loading gear of the first driven tension loading wheel set is sequentially meshed with the loading gears of the subsequent driven tension loading wheel sets. The wound bundles can be loaded to any tension values by means of a plurality of mutually correlative loading wheels, and tension fracture of fiber bundles due to uneven stress of two ends of the fiber bundles during loading can be effectively avoided.

Description

A kind of winding Shu Pinghang interlock tension loading device

Technical field

The present invention relates to a kind of tension loading device, be loaded into arbitrarily required tension force with twining bundle, and can keep winding to restraint at same interface stressed uniform tension loading device, belong to prestress winding technology field.

Background technology

Winding technology is a kind of technology that modern industry is generally used.At chemical field, winding technology is used on the high-pressure-resistant vessels such as high pressure tank, can effectively guarantee safety performance and the endurance quality of container.

And the prestress winding technology be for the mechanical structure form that forms a kind of advanced person before structure is born external load, in advance the tensile region under its outer load effect is applied compression effort, make its privileged site produce prestress and application stress opposite direction, offsetting major part or whole application stresss, thereby greatly improve the load-carrying properties of structure.Because above-mentioned characteristic, it is good that prestressed structure has strength at repeated alternation, and load-carrying capacity is high, without lot of advantages such as explosion hazards.

Because twining, prestress need to be loaded into larger tension value with twining Shu Zhangli, so be difficult to reach requirement with common single-wheel loading.The industrial Shu Kaijuan that will twine first often is wound to other let off roll with less corner cut, directly let off roll effect resisting moment is twined again, and this kind mode has increased technological process.Perhaps directly will twine bundle by two rods that mutually push, utilize two rods that the surface pressure that twines bundle is produced friction force, and then applying tension force to it, this kind mode is difficult to effectively will twine bundle and is loaded into stable hightension, and damages easily and twine the bundle surface quality.In the steel wire winding equipment of heavy industry, steel wire is passed Octoid gear, and the resisting moment of control Octoid gear, can effectively steel wire tension be loaded into higher value, but Octoid gear is only suitable in the larger material of rigidity, to phenomenons such as fibrous bundle can cause that discontinuity is worn and torn, torn.

Summary of the invention

The object of the present invention is to provide a kind of winding Shu Pinghang interlock tension loading device, when simplifying winding wrapping winding technologe, make it more even at the hightension lower stress, effectively avoid the fracture of wire phenomenon.

Technical scheme of the present invention is as follows:

A kind of winding Shu Pinghang interlock tension loading device, it is characterized in that: it comprises that Resistance-load device, active tension load wheels and at least one loads wheels from dynamic tension, and each tension force loads wheels and forms by adapter shaft and the loading wheel and the loaded teeth wheel that are installed on the adapter shaft; The adapter shaft that active tension loads wheels links to each other with the output shaft of Resistance-load device, active tension loads the loading axle of wheels and the interlaced arrangement in parallel of loading axle that respectively loads wheels from dynamic tension, the loading gear that active tension loads wheels loads the loading gear engagement of wheels with first from dynamic tension, and first loads the loading gear of wheels and respectively meshing successively from the loading gear of dynamic tension loading group thereafter from dynamic tension.

Resistance-load device of the present invention can adopt motor or magnetic-powder clutch.

The loading wheel that active tension of the present invention loads wheels and driven loading wheels adopts the surface treatments such as chromium plating.

The present invention compared with prior art, have the following advantages and the high-lighting effect: the present invention uses a plurality of loading wheels that are mutually related fibrous bundle can be loaded into any tension value, not only loading procedure is simple, and can guarantee effectively that fibrous bundle produces the drawing crack phenomenon because of the two ends unbalance stress in loading procedure.

Description of drawings

Fig. 1 is the structural representation of parallel interlock tension loading device embodiment.

Fig. 2 is for loading the structural representation of wheels.

The relation of F1 and F2 when Fig. 3 is in critical conditions for loading wheel.

Fig. 4 is that parallel interlock tension loading device loads moment of torsion transmission scheme drawing when twining bundle.

Among the figure: 1-loads wheel; 2-loads axle; 3-loads gear; 4-Resistance-load device; The 5-coupler; The 6-active tension loads wheels; 7-first loads wheels from dynamic tension; 8-second loads wheels from dynamic tension; 9-the 3rd loads wheels from dynamic tension; 10-the 4th loads wheels from dynamic tension; 11-the 5th loads wheels from dynamic tension; The 12-carbon fiber.

The specific embodiment

Below in conjunction with accompanying drawing structure of the present invention, principle and the specific embodiment are described further.

Fig. 1 and Fig. 2 are the structural representation of winding Shu Pinghang interlock tension loading device embodiment provided by the invention, and it comprises that Resistance-load device 4, active tension load wheels 6 and at least one loads wheels from dynamic tension.Each tension force loads wheels by adapter shaft 3 and is installed in the loading wheel 1 on the adapter shaft 3 and loads gear 2 and forms; The adapter shaft that active tension loads wheels links to each other with the output shaft of Resistance-load device, active tension loads the loading axle of wheels and the interlaced arrangement in parallel of loading axle that respectively loads wheels from dynamic tension, the loading gear that active tension loads wheels loads the loading gear engagement of wheels with first from dynamic tension, and first load the loading gear of wheels and respectively meshing successively from the loading gear of dynamic tension loading group thereafter from dynamic tension.That is to say the loading gear engagement from dynamic tension loading group from the loading gear of dynamic tension loading group and its next stage of upper class.Resistance-load device 4 adopts motor or magnetic-powder clutch.

As shown in Figure 2, load gear 2 and captive joint with adapter shaft 3, load wheel 1 and be connected by bearing with adapter shaft.Several loading wheels are staggered to form and load wheel system, and the loading gear of each train is meshed to transmit locked-in torque successively, and Resistance-load device 4 is connected on the gear of active tension loading wheels by coupler 5.During work, carbon fiber 12 is successively through each loading wheel surface, and Resistance-load device 4 drives and loads the trains rotation, and loads tension force for the loading train, and the torque of regulating the Resistance-load device can be controlled the tension force of carbon fiber.

Fig. 4 is the constructional drawing of the embodiment of loading wheel system, active tension loads loading gear and the first loading gear engagement from dynamic tension loading wheels 7 of wheels 6, the first loading gear and the second loading gear engagement from dynamic tension loading wheels 8 from dynamic tension loading wheels 7, the second loading gear the 3rd from dynamic tension loading wheels 8 meshes from the loading gear that dynamic tension loads wheels 9, the 3rd loading gear and the 4th from dynamic tension loading wheels 9 loads wheels 10 from dynamic tension and loads the gears engagement, the 4th loads wheels 10 from dynamic tension loads gear and the 5th loading gear engagement from dynamic tension loading wheels 11, the like.

Load wheel and can adopt the surface treatments such as chromium plating, guarantee in the situation of the carbon fiber that do not wear and tear with carbon fiber larger friction force is arranged.The number that loads wheel can be calculated by the following method:

At first calculate and reach the default needed loading train of tension force quantity.The winding Shu Yici of required winding walked around loads wheel, given initial tension F1 certain numerical value, only need control wherein the resisting moment of some loading gears can in critical range, regulate arbitrarily the whole tension force Fn of loading.

The loading efficiency that loads wheel is relevant with friction force, when twining circumferential force that Shu Suoxu transmits and surpass the threshold friction summation of twining between bundle and wheel face, twines bundle and loads wheel and significant relative sliding will occur, i.e. inefficacy.The tensile force F2 at carbon fiber two ends and the pass of F1 were when as shown in Figure 3, the loading wheel was in critical conditions

When twining bundle and loading coefficientoffrictionμ one timing between the wheel, want to increase the ratio of F2/F1, must increase wrap angle sigma.

Make the following assumptions first:

(1) suppose that carbon fiber is desirable flexible body, can be arbitrarily crooked, stress influence by bending not;

(2) suppose that pile warp loads the gravity of the fibrous bundle on the wheel and suffered centnifugal force can be ignored.

As shown in Figure 3, get unit length at the loading wheel and be the load-transfer device of dl, it is d α that corresponding neutral angle namely encloses cornerite.When loading the wheel rotation, act on this segment carbon fiber two ends tension force and be respectively F and F+dF.Under ultimate limit state, when namely friction force reached maximum static friction force, dF should be positive pressure dF _NWith the product of coefficientoffrictionμ, namely

dF＝μdF _N

DF _NFor loading wheel to the application force summation of carbon fiber.

Listing this element length load-transfer device stress balance equation is:

$\left\{\begin{array}{c}{\mathrm{dF}}_N=F\sin \frac{\mathrm{d\α}}{2}+(F+\mathrm{dF})\sin \frac{\mathrm{d\α}}{2}\\ F\cos \frac{\mathrm{d\α}}{2}+\mathrm{\μ}{\mathrm{dF}}_N=(F+\mathrm{dF})\cos \frac{\mathrm{d\α}}{2}\end{array}\right.$

Because d α is very little, thus sin (d α/2) ≈ d α/2, cos (d α/2) ≈ 1, above set of equations can be reduced to:

$\left\{\begin{array}{c}{\mathrm{dF}}_N=\mathrm{Fd\α}+\mathrm{dF}\frac{\mathrm{d\α}}{2}\\ \mathrm{dF}=\mathrm{\μ}{\mathrm{dF}}_N\end{array}\right.$

Omit the secondary trace: dFd α, separate above-mentioned equation and get

Force analysis by at this segment unit length upper conveyor belt can obtain, and when friction force reached maximum limit, carbon fiber was non-slip when wish kept loading, and the relation between each parameter should satisfy dF/F=μ d α.With definite integral method solution it, can draw carbon fiber and enclose on the bag arc at whole loading wheel, under non-slip state of limit equilibrium, become a little and the relation between the antivertex

${\&Integral;}_{F_1}^{{\mathrm{<figure-callout\; id="2"\; label="F"\; filenames="HDA0000110626080000021.png"\; state="\{\{state\}\}">F</figure-callout>}}_2}\frac{\mathrm{dF}}{F}={\&Integral;}_0^{\mathrm{\&alpha;}}\mathrm{\&mu;d\&alpha;}$

The solution following formula gets:

F ₂＝F ₁e ^μα

In the formula:

E---Napier's logarithm, e=2.718281828;

μ---load the friction coefficient of wheel and fibrous bundle/fiber cloth;

F ₂---load the maximum tension that wheel loads output;

F ₁---load the input tension force of wheel;

α---carbon fiber is at the cornerite that loads on the wheel.

As shown in Figure 4, when initial tension is F1, when being wanted tension value Fn by being loaded into, then can basis

$\mathrm{\&alpha;}=\frac{1}{\mathrm{\&mu;}}\ln \frac{F_n}{F_1}$

Can calculate from F ₁Be loaded into F _nNeeded wrap angle sigma.

And decide according to structure, each loads the maximum wrap angle sigma of wheel _nRelative position with train is relevant, again basis

$n=\frac{\mathrm{\&alpha;}}{{\mathrm{\&alpha;}}_n}$

So can the required loading wheels number of calculating apparatus according to above formula.

The as shown in Figure 4 once loading of initial tension process straining pulley:

……

$F_2-F_1=F_1(e^{\mathrm{\&mu;}{\mathrm{\&alpha;}}_n}-1)$

$F_3-{\mathrm{<figure-callout\; id="2"\; label="F"\; filenames="HDA0000110626080000021.png"\; state="\{\{state\}\}">F</figure-callout>}}_2=F_2(e^{\mathrm{\&mu;}{\mathrm{\&alpha;}}_n}-1)$

$F_4-F_3=F_3(e^{\mathrm{\&mu;}{\mathrm{\&alpha;}}_n}-1)$

have to

F ₇-F ₁＝F ₁(e ^μα-1)

Can calculate the loading force that respectively loads wheels according to this formula.

Claims (2)

1. one kind twines Shu Pinghang interlock tension loading device, it is characterized in that: it comprises that Resistance-load device, active tension load wheels and at least two and load wheels from dynamic tension, and each tension force loads wheels by adapter shaft (3) and is installed in loading wheel (1) and loading gear (2) composition on the adapter shaft (3); The adapter shaft that active tension loads wheels links to each other with the output shaft of Resistance-load device, active tension loads the loading axle of wheels and the interlaced arrangement in parallel of loading axle that respectively loads wheels from dynamic tension, the loading gear that active tension loads wheels loads the loading gear engagement of wheels with first from dynamic tension, and first load the loading gear of wheels and respectively meshing successively from the loading gear of dynamic tension loading wheels thereafter from dynamic tension.

2. according to a kind of winding Shu Pinghang interlock tension loading device claimed in claim 1, it is characterized in that: described Resistance-load device adopts motor or magnetic-powder clutch.

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