CN102096183A - Large-load telescope pitch axis system - Google Patents

Abstract

The invention relates to a large-load telescope pitch axis system. Bearings used on the left end and the right end of the telescope pitch axis system are radial bearings in a double-row steel ball structure form that two rows of steel balls with different sizes are arranged on a radial bearing retainer; and the thicknesses of the inner races and the outer races of the bearings in the telescope pitch axis system are increased by 1-1.5 times of the diameters of the steel balls on the original basis. The radial bearings on both ends of the axis system are in the double-row steel ball structure so that the loading capacity of the axis system is improved. When the bearings are improved, the traditional processing detection is not influenced, and the loading capacity of the traditional telescope pitch axis system is improved well so that a telescope can bear more loads. The adaptability of the axis system is enhanced, the developing period for product updating is shortened, and the practicality of the telescope is raised.

Description

A kind of telescope pitch axis system of big carrying

Technical field

The present invention is that a kind of telescope pitch axis is, the telescope pitch axis system of particularly a kind of big carrying (compare the bearing shaft system of single steel ball structure, the bearing ratio of this kind airframe bearing axle system had increased about 1 times originally) belongs to telescope and makes the field.

Background technology

Telescopical version has altitude azimuth form and polar mounts, and the altitude azimuth form frame is slightly different again with the axle system of polar mounts frame, and the version of using at present is many basically all to be altitude azimuth form, and the present invention only discusses at the altazimuth telescope frame.

The design of telescope pitch axis and manufacturing need to consider problems such as a structure of system, carrying, shafting precision, and in fact, in case telescopical version has determined that the version of telescope pitch axis is also just basic have been determined.Though the version of pitch axis is easy to just determine, want to allow the load-bearing capacity increase of bearing but very difficult, often must change bearing arrangement size (bearing radial dimension), this will exert an influence to design and follow-up manufacturing, detection, also may have influence on the precision of axle system.Along with the development of technology, telescopical function is also towards diversified development, and the variation of function means that the load on the telescope will constantly increase, and therefore the load-bearing capacity of telescope pitch axis being required also can be more and more higher.In fact telescope pitch axis axle system is a very ripe version, in a lot of places application is arranged all, under traditional version and theory, the load-bearing capacity that wants to increase bearing has only size, quantity of the size that changes neck collar simultaneously and steel ball etc., may cause chain reaction like this, all must change as the size of retainer, the size of bearing seat, the size of motor in the design, frock on processing detects etc. all must change, and changes like this when device fabrication is not enough in batches and can expend a large amount of manpower and financial resources.

Summary of the invention

The technical matters that the present invention solves: overcome the deficiencies in the prior art, provide a kind of telescope pitch axis of big carrying to tie up in the telescope pitch axis system and all use biserial steel ball transverse bearing, improve the load-bearing capacity of telescope pitch axis greatly, under certain physical dimension, make the more load of telescope energy load.

Technical solution of the present invention: a kind of telescope pitch axis system of big carrying, what described telescope pitch axis axle was that left and right sides bearings at both ends uses is the transverse bearing with biserial steel ball structure form, and the steel ball of the identical size of two row is promptly arranged on the transverse bearing retainer; When described telescope pitch axis axle ties up to effective increase bearing capacity only the thickness at bearing inner ring, outer race carried out trickle change, the thickness of bearing inner ring, outer race is varying sized to be 1～1.5 times of steel ball size.

Arranging of two row steel balls is that the conclusion of the business mistake falls to distributing on the described transverse bearing retainer.

Principle of the present invention: the load bearing requirements of telescope pitch axis system is more and more higher, increasing pitch axis is the quantity of steel ball in the transverse bearing and the carrying that size can improve bearing, and being the bearing arrangement size, pitch axis can not increase considerably, adopt in identical size dimension bearing the columns that increases steel ball can significantly increase the quantity of steel ball for this reason, thus the carrying that improves bearing.

The present invention is to have compared following advantage with conventional axle:

(1) the present invention adopts the axle system of biserial steel ball transverse bearing, makes that the load on the same model telescope increases greatly, has satisfied the demand that load increases on the machine, has improved telescopical suitable boundary line.

(2) the present invention adopts the axle system of biserial steel ball transverse bearing, promoted the carrying of telescope pitch axis to greatest extent, the pattern that the sort of increase load must redesign before having changed reduces telescopical design iterations when the telescope bore is constant, improved design efficiency.

(3) the present invention adopts the axle system of biserial steel ball transverse bearing, when improving bearing capacity, do not change the radial dimension of bearing inner and outer ring, make the frock when processing detects to use repeatedly, reduced manufacturing cost, make that the telescope pitch axis is the bearing production of can finalizing the design.

Description of drawings

Double steel ball transverse bearing pitch axis among Fig. 1 the present invention binds composition;

The structure diagram of the transverse bearing among Fig. 2 the present invention;

Fig. 3 is the structural drawing of the double steel ball transverse bearing retainer group among the present invention;

Fig. 4 is the double steel ball transverse bearing right-hand member bearing arrangement figure among the present invention;

Fig. 5 is double steel ball transverse bearing left end shaft bearing structure figure among the present invention.

Embodiment

Crucial part of the present invention is exactly that steel ball with transverse bearing is from the single-row biserial that changed into, the two ends of telescope pitch axis system simultaneously the bearing of biserial steel ball structure have been used in, be under the constant situation of bearing radial dimension at axle like this, the load-bearing capacity that axle is promoted one times with respect to conventional art.

As shown in Figure 1, for the telescope pitch axis, bearing inner ring 1 is a rotating ring, and outer race 3 is solid rings, is that steel ball 4 is in order to guarantee 1 rotation flexibly in the bearing between bearing inner ring 1 and outer race 3.Bearing inner ring 1, outer race 3, steel ball 4 are added because the transverse bearing retainer 2 of restriction steel ball position has just constituted the complete transverse bearing of a cover, and the carrying of axle system is realized by transverse bearing.The structure diagram of telescope pitch axis transverse bearing as shown in Figure 2, being carried as of single steel ball in the schematic structure:

$P={10}^{-6}{\mathrm{\&sigma;}}_{\mathrm{\&tau;}}^3{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="HSA00000403473900021.png,HSA00000403473900022.png"\; state="\{\{state\}\}">R</figure-callout>}}^2/\left(a^3{E}^2\right)$

A is a constant 0.388 in the formula, σ _τBe the allowable contact stress (MPa) of steel ball, R is steel ball radius (mm), and E is elastic modulus (GPa), and P is the maximum load (N) of single steel ball.

If the number of the single-row steel ball of transverse bearing is n, being carried as of then single-row steel ball transverse bearing:

G ₁＝n*P/5

Columns is made as L if pitch axis is the transverse bearing steel ball, and safety coefficient is taken as S, then being carried as of pitch axis system:

G＝LG ₁/S＝L*n*P/(5*S)

G is the carrying of pitch axis system in the formula.

As can be seen, the bearing capacity of bearing is relevant with the number of steel ball size, single-row steel ball, the columns of steel ball etc. from formula.This several influence in the factor, the size of steel ball and the number of single-row steel ball are that the radial dimension with the bearing inner and outer ring is mutually related, and the columns of steel ball is relevant with the axial dimension (thickness) of bearing inner and outer ring in the bearing.

Change steel ball 4 columns in the bearing, only need the axial distance of change bearing inner and outer ring, the diameter that only gauge of bearing inner and outer ring need be increased by 1～1.5 steel ball gets final product, and is very easy to realize that the while has been strengthened one times with the bearing capacity of telescope pitch axis again.

The present invention is by revising transverse bearing retainer 2,4 columns of the steel ball in the retainer have been changed into two row by row, simultaneously the axial dimension of bearing inner ring 1 and outer race 3 has been increased 1～1.5 times of steel ball 4 diameters, bearing with biserial steel ball form is applied to the two ends that the telescope pitch axis is then, has promptly guaranteed huge about about 1 times of the carrying that the is energy that also improved simultaneously of the unlikely change of structure of axle system.

Fig. 3 is after changing single-row steel ball into the biserial steel ball, the structural drawing of transverse bearing retainer group, Fig. 4 is the structural drawing of right-hand member bearing, Fig. 5 is the structural drawing of left end bearing, from Fig. 4, Fig. 5, as can be seen the columns of steel ball in the single bearing is changed into two row backs the radial dimension of bearing is not changed, but bearing capacity can double.Shown in Figure 1 is that the example that the biserial steel ball bearing is used on the telescope pitch axis is illustrated, this structural variation does not have influence on design, processing and the precision of telescope pitch axis, and system can use the biserial steel ball bearing by example telescope pitch axis axle.

The transverse bearing that the present invention with axle is all uses the structure of biserial steel ball, does not have influence on existing processing and detect when bearing is improved, and has well improved the load-bearing capacity of traditional telescope pitch axis, makes telescope can bear more load.Strengthen the adaptability of axle system, shortened the lead time of Product Renewal, promoted telescopical practicality.

Claims (2)

1. the telescope pitch axis of one kind big carrying system is characterized in that: what telescope pitch axis axle was that left and right sides bearings at both ends uses is the transverse bearing with biserial steel ball structure form, and the steel ball (4) of the identical size of two row is promptly arranged on the transverse bearing retainer (2); Bearing inner ring (1) in the telescope pitch axis axle system, the thickness of outer race (3) increase 1～1.5 times of steel ball size on original basis.

2. according to the telescope pitch axis system of the described a kind of big carrying of claim 1, it is characterized in that: arranging of the last two row steel balls of transverse bearing retainer (2) is that the conclusion of the business mistake falls to distributing.

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