CN104452500B - A kind of track profiling polishing process - Google Patents

Abstract

A kind of track profiling polishing process, the present invention relates to railroad track maintenance technology field, especially a kind of track profile polishing process, track profiling sander is placed in to initial position, taking the track cross section at burnishing-head of burnishing machine pivot center place as datum plane, set up rectangular coordinate system, measure and obtain rail type areal coordinate parameter and sander initial position parameters, determine and treat polishing orbit profile, to treat that the polishing orbit profile straight line crossing with datum plane is as polishing tangent line, portable grinder bistrique, to bistrique rotation and polishing tangent line upright position, drive burnishing-head of burnishing machine to move radially to bistrique lower surface and overlap with polishing tangent line along bistrique rotating shaft, drive burnishing-head of burnishing machine along treating that polishing orbit profile moves, complete the polishing for the treatment of polishing orbit profile. profiling polishing process of the present invention, according to coordinate parameters portable grinder bistrique, vertical with polishing tangent line to bistrique rotation, realize the effect that arbitrarily angled when polishing all adopts the polishing that bistrique end face carries out.

Description

A kind of track profiling polishing process

Technical field

The present invention relates to railroad track maintenance technology field, especially a kind of track profile polishing process.

Background technology

Along with the development of railway high speed and heavy duty, rail can produce the defects such as fatigue crack, fat edges and undulatory wear,Can affect rolling stock traveling comfort and security, above-mentioned defect can be accelerated rail inefficacy simultaneously, bringsLarge economic loss. To rail carry out preventative and corrective maintenance be extend rail life, improve comfortableness,The requisite measure of economy and security. At present, rail repair mode mainly contains polishing, planing, milling and handThe modes such as work grinding, wherein, adopt efficient sander to rail repair application the most general.

Domestic conventional polishing process mainly contains various small-sized sander hand-guided polishings, bistrique at presentDriven or driven by power by gasoline engine, efficiency is extremely low, can only be used on a small scale track among a small circleRepair, aspect profile copying technology, on original track, by mechanical rollers and rail level, (this rail level is not yetStandard rail level, but rail level with defect) contact profiling, add artificial adjustment stock removal, grinding face withoutMethod is accomplished specification, standard, and human factor is a lot.

Domestic current comparatively advanced polishing process is to adopt external hydraulically powered polishing locomotive to polish,Be greatly improved at grinding efficiency, but this polishing process is having certain lacking aspect the profile copying technology of rail levelFall into. In existing polishing process, what profiling adopted is by hydraulic way, and bistrique is pressed to track, keeps emery wheelHave certain pressure with track, ensure grinding force, but to approach rail a little less than the abrasion homogenization of wave, at rippleStill there is cutting at paddy place, secondly the profiling of rail level is also realized by hydraulic pressure, so grinding face cannot be accomplishedSpecification, standard.

Summary of the invention

1. the technical problem that invention will solve

The present invention aims to provide a kind of multi-section track profiling polishing process, thereby more even to track realization,Stable contact-making surface polishing.

2. technical scheme

A kind of track profiling polishing process of the present invention, specifically comprises the steps:

Step 1, track profiling sander is placed in to initial position, with the rail at burnishing-head of burnishing machine pivot center placeCross section, road is datum plane, sets up rectangular coordinate system, measures and obtains rail type areal coordinate parameter;

Step 2, measurement obtain track profiling sander initial position parameters;

The coordinate parameters of step 3, measurement track profiling sander, note burnishing-head of burnishing machine is at datum plane inner peripheryThe axle center swinging is Q point, records Q point initial position coordinate, is designated as Q₀；

Step 4, determine and treat polishing orbit profile, taking treat the polishing orbit profile straight line crossing with datum plane asPolishing tangent line, polishing tangent line and track are tangential on point of contact Z, and the coordinate of note point of contact Z is Z₁, note polishing tangent lineWith the folded acute angle of horizontal plane be β;

Step 5, portable grinder bistrique, to bistrique rotation and polishing tangent line upright position;

Step 6, driving burnishing-head of burnishing machine move radially to bistrique lower surface and polishing tangent line weight along bistrique rotating shaftClose;

Step 7, drive burnishing-head of burnishing machine along treating that polishing orbit profile moves, complete and treat beating of polishing orbit profileMill;

Step 8, employing generating are polished one by one to track profile, and repeating step 4～7, completes track profiling and beatMill.

Above-mentioned track profiling polishing process, further, in described step 3, note sander fixed centerPoint is P point, and the coordinate parameters of track profiling sander also comprises P point coordinates, and P point is arranged in railDirectly over heart position.

Above-mentioned track profiling polishing process, further, in described step 5, portable grinder bistriqueMethod is specially and comprises the following steps,

Step 5.1, perpendicular to polishing tangent line straight line on get operating point, Q point institute while work as sanderIn position, operating point coordinate is designated as Q₁, Q₁With Z₁Line with polishing tangent line vertical;

Step 5.2, calculating Q₁With Z₁Between air line distance, be designated as F, another F₀≤F≤(F₀+Fx)，F₀For the minimum spacing that burnishing-head of burnishing machine and Q are ordered, Fx is that burnishing-head of burnishing machine maximum feeds distance;

Step 5.3, between P point and Q point, two forks are set, the first fork link is arranged on P point,Free end is designated as M point, and the first oscillating bar length is L1, and the second fork link is arranged on Q point, free end noteFor N point, the second oscillating bar length is L2, and the first fork is connected by connecting rod with the free end of the second fork, connectsPole length is L, and the second fork is relative with burnishing-head of burnishing machine to be fixedly connected with, and note the second fork and burnishing-head of burnishing machine turnThe folded acute angle of axle is α;

Step 5.4, according to Q₁Calculate the first fork free end coordinate M while obtaining sander work₁With the second pendulumBar free end coordinate N₁；

Step 5.5, driving the first fork and the second fork turn to operating position, and portable grinder bistrique is complete.

3. beneficial effect

1, profiling polishing process of the present invention, sets up xOy coordinate system, grinds according to coordinate parameters portable grinderHead, vertical with polishing tangent line to bistrique rotation, in bruting process, no matter be the upper surface of polishing orbit,Or the medial surface of track, because bistrique rotation is vertical with polishing tangent line, equal while realizing arbitrarily angled polishingThe effect of the polishing that employing bistrique end face carries out. When the bistrique sand of sander grinding and feeding driving box driver plate shapeWhen wheel rotates polishing, when polishing, the reaction force of pressure, perpendicular to discoidal bistrique end face, is that bistrique is along turningDirection of principal axis is stressed, even if apply the pressure of increasing, and the motor part that also can not rotate impact.

2, profiling polishing process of the present invention, use be wheel grinding, the depth of cut is quite small, generally exists0.4-0.05mm, therefore adopts swing link transmission, by swing arm driving mode, thereby realizes grinding head depth of cut essenceReally control, swing arm polishing structural volume is little, lightweight, and bearing capacity is large, and control accuracy is high, is easy to and numerical controlSystem docking.

3, profiling polishing process of the present invention, profiling polishing better effects if. When polishing, sander fixed centerPoint (P point) is arranged on directly over rail center (0 point), therefore profiling when polishing, grinding head and beatingGrinding machine fixed center realizes staggering in vertical direction, and overall fixed mechanism forms certain bias. According to thisWhen bright method is carried out sander polishing, when the polishing of grinding head high speed rotating, whole mechanism is that one direction is subject to all the timePower, departs from the pivot of grinding head the center of gravity position of sander feeding driver element, thereby solves vibrationsCause the problem of mechanism-trouble, polishing weak effect.

Brief description of the drawings

Fig. 1 is the specific embodiment principle schematic of the inventive method.

Detailed description of the invention

Embodiment 1

Below in conjunction with accompanying drawing, method of the present invention is illustrated.

Step 1, track profiling sander is placed in to initial position, with burnishing-head of burnishing machine 4 pivot center placesTrack cross section is datum plane, sets up rectangular coordinate system, measures and obtains rail type areal coordinate parameter, this enforcementIn example, taking track bottom center's point as initial point, set up x0y rectangular coordinate system.

Step 2, measurement obtain track profiling sander initial position parameters; Note sander fixed center point is PPoint, the coordinate parameters of track profiling sander also comprises P point coordinates, and P point is arranged on to rail centerDirectly over, P point coordinates is (0, Yp).

The coordinate parameters of step 3, measurement track profiling sander, note burnishing-head of burnishing machine 4 is in datum plane inner circleThe axle center that week swings is Q point, records Q point initial position coordinate, is designated as Q₀(Xq₀，Yq₀)。

Step 4, determine and treat polishing orbit profile, taking treat the polishing orbit profile straight line crossing with datum plane asPolishing tangent line, polishing tangent line and track are tangential on point of contact Z, and the coordinate of note point of contact Z is Z₁(Xz₁，Yz₁)，Note polishing tangent line and the folded acute angle of horizontal plane are β, i.e. β angle in Fig. 1.

Step 5, portable grinder bistrique 4, to bistrique rotation and polishing tangent line upright position, mobile beatingThe method of grinding machine grinding head 4 is specially and comprises the following steps.

Step 5.1, perpendicular to polishing tangent line straight line on get operating point, Q point institute while work as sanderIn position, operating point coordinate is designated as Q₁(Xq₁，Yq₁)，Q₁With Z₁Line with polishing tangent line vertical.

Step 5.2, calculating Q₁With Z₁Between air line distance, be designated as F, another F₀≤F≤(F₀+Fx)，F₀For the minimum spacing that burnishing-head of burnishing machine 4 and Q are ordered, Fx is that burnishing-head of burnishing machine 4 maximums feed distance.

Step 5.3, between P point and Q point, two forks are set, the first fork 6 links are arranged on P point,Coordinate is (0, Yp), and free end is designated as M point, and the first fork 6 length are L1; The second fork 8 linksBe arranged on Q point, free end is designated as N point, and the second fork 8 length are L2, the first fork 6 and the second fork8 free end connects by connecting rod 7, and connecting rod 7 length are L3, the second fork 8 and burnishing-head of burnishing machine 4 phasesTo being fixedly connected with, note the second fork 8 is α with the folded acute angle of burnishing-head of burnishing machine 4 rotating shaft, i.e. α angle in Fig. 1.

Step 5.4, according to Q₁Calculate the first fork free end coordinate M while obtaining sander work₁With the second pendulumBar free end coordinate N₁。

Concrete computational process and formula are as follows:

$\∠\mathrm{ZPQ}=\arctan \left(\frac{{\mathrm{Xq}}_1}{\mathrm{Yp}-{\mathrm{Yq}}_1}\right).$

∠ NQP=alpha-beta-∠ ZPQ, and NQ length is L2, the abscissa of known N1 is Xq₁-L2*sin(∠NQP)，N₁Ordinate be Yq₁+L2*cos(∠NQP)。

PN₁Between length L_PN1＝(Xq₁-L2*sin(∠NQP))²+(Yp-Yq₁-L2*cos(∠NQP))²。

Can try to achieve according to the cosine law, $\∠P{N}_1{M}_1=\arccos \left(\frac{{L_3}^2+{L_{\mathrm{PN}1}}^2-{L_1}^2}{2\×L_3\×L_{\mathrm{PN}1}}\right).$

Note N₁Intersection point in Y-axis is N₁₀,

$\∠P{N}_1{N}_{10}=\arctan \left(\frac{|\mathrm{Yp}-Y{q}_1-L2*\cos (\∠\mathrm{NQP})|}{|{\mathrm{Xq}}_1-L2*\sin (\∠\mathrm{NQP})|}\right).$

∠M₁N₁N₁₀＝∠PN₁N₁₀-∠PN₁M₁, the horizontal range between M1 and N1 is L3*cos (∠M₁N₁N₁₀)，M₁With N₁Between vertical range be L3*sin (∠ M₁N₁N₁₀), known M₁Horizontal seatBe designated as Xq₁-L2*sin(∠NQP)+L3*cos(∠M₁N₁N₁₀)，N₁Ordinate be Yq₁+L2*cos(∠NQP)+L3*sin(∠M₁N₁N₁₀)。

Step 5.5, the M that calculating obtains according to step 5.4₁And N₁Coordinate, can drive the first fork 6Turn to corresponding operating position with the second fork 8, portable grinder bistrique 4 is complete.

Step 6, driving burnishing-head of burnishing machine 4 move radially to bistrique lower surface and polishing tangent line weight along bistrique rotating shaftClose; In the present embodiment, employing be that servomotor 1 drives burnishing-head of burnishing machine by screw nut driven structure 34 move to the lower surface of burnishing-head of burnishing machine 4 and track 5 profile to be polished is contacted with point of contact along line slideway 2Z。

Step 7, drive burnishing-head of burnishing machine 4 along treating that polishing orbit profile moves, complete to treat polishing orbit profilePolishing;

Step 8, employing generating are polished one by one to track profile, and repeating step 4～7, completes track profiling and beatMill.

Below schematically the present invention and embodiment thereof are described, this description does not have restricted, institute in accompanying drawingWhat show is also one of embodiments of the present invention, and actual structure is not limited to this. So, if abilityThe those of ordinary skill in territory is enlightened by it, in the situation that not departing from the invention aim, without creationaryDesign the frame mode similar to this technical scheme and embodiment, all should belong to protection scope of the present invention.

Claims (3)

1. a track profiling polishing process, is characterized in that comprising the steps:

Step 1, track profiling sander is placed in to initial position, taking the track cross section at burnishing-head of burnishing machine pivot center place as benchmarkPlane, sets up rectangular coordinate system, measures and obtains rail type areal coordinate parameter;

Step 2, measurement obtain track profiling sander initial position parameters;

The coordinate parameters of step 3, measurement track profiling sander, the axle center that note burnishing-head of burnishing machine swings at datum plane inner periphery is QPoint, records Q point initial position coordinate, is designated as Q₀；

Step 4, definite polishing orbit profile for the treatment of, to treat that the polishing orbit profile straight line crossing with datum plane is as polishing tangent line, polishingTangent line and track are tangential on point of contact Z, and the coordinate of note point of contact Z is Z₁, note polishing tangent line and the folded acute angle of horizontal plane are β;

Step 5, portable grinder bistrique, to burnishing-head of burnishing machine rotation and polishing tangent line upright position;

Step 6, driving burnishing-head of burnishing machine move radially to burnishing-head of burnishing machine lower surface and overlap with polishing tangent line along burnishing-head of burnishing machine rotating shaft;

Step 7, drive burnishing-head of burnishing machine along treating that polishing orbit profile moves, complete the polishing for the treatment of polishing orbit profile;

Step 8, employing generating are polished one by one to track profile, and repeating step 4～7 completes track profiling polishing.

2. track profiling polishing process according to claim 1, is characterized in that: in described step 3, note sander is fixedCentral point is P point, and the coordinate parameters of track profiling sander also comprises P point coordinates, and P point is just being arranged on to rail centerTop.

3. track profiling polishing process according to claim 2, is characterized in that: in described step 5, and portable grinder millThe method of head is specially and comprises the following steps,

Step 5.1, perpendicular to polishing tangent line straight line on get operating point, Q point position while work as sander, operating pointCoordinate is designated as Q₁, Q₁With Z₁Line with polishing tangent line vertical;

Step 5.2, calculating Q₁With Z₁Between air line distance, be designated as F, another F₀≤F≤(F₀+Fx)，F₀For burnishing-head of burnishing machine and QThe minimum spacing of point, Fx is that burnishing-head of burnishing machine maximum feeds distance;

Step 5.3, between P point and Q point, two forks are set, the first fork link is arranged on P point, and free end is designated as M point,The first oscillating bar length is L1, and the second fork link is arranged on Q point, and free end is designated as N point, and the second oscillating bar length is L2,The first fork is connected by connecting rod with the free end of the second fork, and length of connecting rod is L, and the second fork is relative with burnishing-head of burnishing machine solidFixed connection, note the second fork and the folded acute angle of burnishing-head of burnishing machine rotating shaft are α;

Step 5.4, according to Q₁Calculate the first fork free end coordinate M while obtaining sander work₁With the second fork free end coordinate N₁；

Step 5.5, driving the first fork and the second fork turn to operating position, and portable grinder bistrique is complete.