CN102040153A - Escalator with Euler handrail driving system - Google Patents

Abstract

The invention discloses an escalator with an Euler handrail driving system. The escalator comprises a frame body, a handrail band and a friction wheel, wherein the friction wheel is arranged in the frame body and in contact with the handrail band, the escalator further comprises two roller groups which are oppositely arranged on two sides of the friction wheel and compress the handrail band, one side is the fixed side, the other side is the regulation side, one end of the roller group positioned on the fixed side is fixed with the frame body through a fixed steel angle, the other end of the roller group is fixed with the frame body through a puller bolt, and one end of the roller group positioned on the regulation side is fixed with the frame body through a connecting steel angle; and the escalator also comprises a pull rod, one end of the pull rod is fixed with the middle part of the roller group positioned on the regulation side, the other end of the pull rod penetrates through a steel angle fixed on the frame body, an external thread is arranged on the part, which penetrates out of the steel angle, of the pull rod, and a clamping part with an internal thread is further sheathed on the part. According to the invention, the abrasion and pressure marks of the handrail band can be effectively reduced, the service life of the handrail band is prolonged, and the performances of the whole machine are greatly improved.

Description

Escalator with Euler's handrail drive system

Technical field

The present invention relates to the escalator field, relate in particular to a kind of escalator of the Euler's of having handrail drive system.

Background technology

At present the handrail drive system of escalator mainly contains polywedge bet and compresses handrail and drive, roll more band and compress that handrail drives, straight line compresses handrail and drives.More than several structures nearly all adopt the compression type handrail drive system, see also the compression type handrail drive system 1 ' among Fig. 1, the advantage of this device is to obtain enough propulsive efforts easily, but there are 2 problems equally, the one compressing member all acts on handrial belt, long-play can make the handrial belt rapid wearing and produce impression, influences the life-span of handrail; It is two because the constantly elongation of handrail long-play, and handrail drives initial tension and can't guarantee, thereby can make handrail produce shake or skid.

Traditional handrail drive system is seen theoretically and is still had certain defective, adjusts many reasons such as not in place if add, and the life-span of handrail is difficult to guarantee that the life-span in 20 years of this and complete machine has been compared tangible gap.

Can cancel handrail pressure zone system and adopt a kind of new technology to improve the life-span of handrail, and the impression that reduces handrail is that the present inventor is devoted to the problem studying and solve.

Summary of the invention

The escalator that the objective of the invention is to overcome the defective of prior art and a kind of Euler's of having handrail drive system is provided, its actv. has reduced the wearing and tearing and the impression of handrail, improves the life-span of handrail use and makes the complete machine performance also obtain improving greatly.

The technical scheme that realizes above-mentioned purpose is: a kind of escalator of the Euler's of having handrail drive system, comprise support body, handrail and be arranged at the friction wheel that contacts in the support body, with handrail and pass through the rotation drive handrail motion of self, wherein, described escalator also comprises:

Two are arranged at described friction wheel both sides relatively and compress the roller group of described handrail, wherein a side is a fixation side, opposite side is for regulating side, fixedly fix by angle steel and described support body by one for the described roller group's who is positioned at fixation side a end, the other end is fixed by puller bolt and described support body, and a described end that is positioned at the roller group who regulates side is fixed by a connecting angle and described support body;

One pull bar, one end and the described middle part that is positioned at the roller group who regulates side are fixed, the other end passes an angle steel that is fixed on the support body, has outside thread on the part that passes described angle steel of this pull bar, and also be with the Fastener with negative thread on it, this negative thread and described outside thread are complementary.

The above-mentioned escalator with Euler's handrail drive system, wherein, described roller group comprises that arcuate fixed frame and several are arranged at the roller on this fixed mount.

The above-mentioned escalator with Euler's handrail drive system, wherein, described Fastener is a nut.

The invention has the beneficial effects as follows: the present invention has adopted a kind of new technology to improve the life-span of handrail, reduce the impression of handrail, with the non-slip theorem first Application of Euler on the escalator product, adopt the friction-driven technology and the friction cornerite automatic control technology of auto-tensioning, the energy actv. reduces the wearing and tearing and the impression of handrail, and the life-span of improving the handrail use also makes the complete machine performance also obtain improving greatly.

Description of drawings

Fig. 1 is the prior art constructions scheme drawing;

Fig. 2 is that the armrest drive force of the non-slip theorem of Euler is learned illustraton of model;

Fig. 3 is the structural representation of the escalator of the Euler's of having handrail drive system of the present invention.

The specific embodiment

Adopt Euler's theorem among the present invention, now this theorem has been done following brief description.

Therefore Euler's theorem is successfully applied to other science and technology field already, and many great achievements all are and obtain, as: " infinitesimal analysis draws opinion ", " differential calculus principle " of tremendous influence or the like are arranged.He not only can be applied to natural science, and has also obtained using widely in high-precision fields such as navigation, space flight.

Seeing also Fig. 2, is that the armrest drive force of the non-slip theorem of Euler is learned illustraton of model,

1. getting little section belt length is chorista, and force analysis is as scheming:

2. row condition of balance on force formula:

Vertical direction:

$d{F}_N=F\sin \frac{\mathrm{d\α}}{2}+(F+\mathrm{dF})\sin \frac{\mathrm{d\α}}{2}$

dF _N＝Fdα (1)

Ignore the secondary dimensionless, and get:

$\sin \frac{\mathrm{d\α}}{2}\≈\frac{\mathrm{d\α}}{2}$

$\cos \frac{\mathrm{d\α}}{2}\≈1$

$\mathrm{fd}{F}_N+F\cos \frac{\mathrm{d\α}}{2}=(F+\mathrm{dF})\cos \frac{\mathrm{d\α}}{\text{2}}$

fdF _N＝dF (2)

(1), (2) formula simultaneous can get:

$\frac{\mathrm{dF}}{F}=\mathrm{fd\α}$

3. integration obtains Euler's formula:

${\&Integral;}_{F_2}^{{\mathrm{<figure-callout\; id="1"\; label="F"\; filenames="HDA0000041106390000011.png,HDA0000041106390000021.png"\; state="\{\{state\}\}">F</figure-callout>}}_1}\frac{\mathrm{dF}}{F}={\&Integral;}_0^{\mathrm{\&alpha;}}\mathrm{fd\&alpha;}$

lnF ₁-lnF ₂＝fα

$\frac{F_1}{{\mathrm{<figure-callout\; id="2"\; label="F"\; filenames="HDA0000041106390000021.png,HDA0000041106390000031.png"\; state="\{\{state\}\}">F</figure-callout>}}_2}=e^{\mathrm{f\&alpha;}}$

Wherein, F ₁Be armrest drive force, F ₂Be initial tension, α is a cornerite, and f is a friction coefficient.

Therefore, we obtain: F ₁=F ₂e ^{F α}

1. initial tension F ₂Increase and cause armrest drive force F ₁Increase, because the big more friction force of pressure is big more, but initial tension F ₂Excessive, can aggravate the wearing and tearing and the heating of handrail.So should automatic guidance F ₂Size.

2. the wrap angle sigma increase causes handrail propulsive effort F ₁Increase, because wrap angle sigma is big more, handrail and friction wheel arc of contact are long more, and total frictional force is big more, so will guarantee enough propulsive efforts, the size of wrap angle sigma must guarantee.

3. the friction coefficient increase causes armrest drive force F ₁Increase.

The present invention realizes according to top said these three conditions just.

See also Fig. 3, there is shown the escalator of a kind of Euler's of having handrail drive system of the present invention, comprise support body 1, handrail 2 and be arranged at the friction wheel 3 that contacts in the support body 1, with handrail 2 and pass through rotation drive handrail 2 motions of self, escalator also comprises:

Two are arranged at friction wheel 3 both sides relatively and compress the roller group 4 of handrail 2, wherein a side is a fixation side, opposite side is for regulating side, an end that is positioned at the roller group 4 of fixation side passes through one, and fixedly angle steel 51 is fixing with support body 1, the other end is fixing with support body 1 by puller bolt 52, and an end that is positioned at the roller group 4 who regulates side is fixing with support body 1 by a connecting angle 6;

One pull bar 7, one end is fixed with the middle part that is positioned at the roller group 4 who regulates side, and the other end passes an angle steel 8 that is fixed on the support body 1, has outside thread on the part that passes angle steel 8 of this pull bar 7, and also be with the Fastener 71 with negative thread on it, this negative thread and outside thread are complementary.

Roller group 4 comprises that arcuate fixed frame 41 and several are arranged at the roller 42 on this fixed mount 41.

Fastener 71 of the present invention is a nut, also can be two nuts perhaps, and the centre also can put a spring.

Principle of work: regulate wrap angle sigma and initial tension F by pull bar 7 ₂, according to the formula that obtains, with regard to may command handrail propulsive effort F ₁It is long more with friction wheel 3 arc of contacts promptly can to regulate handrail 2 on the one hand by pull bar 7, can control the degree of tension between handrail 2 and the friction wheel 3 on the other hand, by negative thread and externally threaded cooperation, make that the length of stretching out angle steel 8 of pull bar 7 is elongated, thereby make pressure become big.Utilize the wrap angle sigma of control friction-driven, thereby guarantee that handrail 2 obtains enough propulsive efforts; By control initial tension F ₂Size, thereby reduce the wearing and tearing and the heating of handrail 2.

In sum, the present invention with the non-slip theorem first Application of Euler on escalator, adopt the friction-driven technology of auto-tensioning, with friction cornerite automatic control technology, the energy actv. has reduced the wearing and tearing and the impression of handrail, and the life-span of improving handrail 2 uses also makes the complete machine performance also obtain improving greatly.

Below embodiment has been described in detail the present invention in conjunction with the accompanying drawings, and those skilled in the art can make the many variations example to the present invention according to the above description.Thereby some details among the embodiment should not constitute limitation of the invention, and the scope that the present invention will define with appended claims is as protection scope of the present invention.

Claims (3)

1. the escalator with Euler's handrail drive system comprises support body, handrail and is arranged at the friction wheel that contacts in the support body, with handrail and pass through the rotation drive handrail motion of self, it is characterized in that described escalator also comprises:

Two are arranged at described friction wheel both sides relatively and compress the roller group of described handrail, wherein a side is a fixation side, opposite side is for regulating side, fixedly fix by angle steel and described support body by one for the described roller group's who is positioned at fixation side a end, the other end is fixed by puller bolt and described support body, and a described end that is positioned at the roller group who regulates side is fixed by a connecting angle and described support body;

One pull bar, one end and the described middle part that is positioned at the roller group who regulates side are fixed, the other end passes an angle steel that is fixed on the support body, has outside thread on the part that passes described angle steel of this pull bar, and also be with the Fastener with negative thread on it, this negative thread and described outside thread are complementary.

2. the escalator with Euler's handrail drive system according to claim 1 is characterized in that, described roller group comprises that arcuate fixed frame and several are arranged at the roller on this fixed mount.

3. the escalator with Euler's handrail drive system according to claim 1 is characterized in that, described Fastener is a nut.

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