The content of the invention
The technical problem to be solved is to provide a kind of little jaw measurement mark of high-precision high-speed railway track plate
Frame and its measuring method.
The technical proposal for solving the technical problem of the invention is：The little jaw of track plates measures frame, including T-shaped frame,
The big end both sides of T-shaped frame are provided with a pair of fixed contacts, prism table is fixed in the corresponding hole position in the middle part of the small end of T-shaped frame, spiral shell
Pore adapter is arranged in the corresponding hole position of the small end end of T-shaped frame, the column jacket of the shell of the endoporus and screw adapter of bushing
Face coordinates, and the endoporus of cam is nested with the cooperation of the outer cylinder of bushing, makes described one using the offset of cam in rotary course
Fixed contact is pushed against on support rail face, the screw adapter, bushing and cam constitute link gear.
Further, also it is symmetrical arranged in the axis of T-shaped frame and big end both sides respectively, three including three supporting screws
Three contacts of individual supporting screw lower end constitute an isosceles triangle, are supported on support rail table top jointly.
Further, the screw adapter includes mandrel, stage clip, shell and bolt, and hollow internal in shell is arranged
Have stage clip and a mandrel, mandrel bottom is positioning cone, compression spring sleeve on mandrel, the upper end of bolt fixed central spindle.
Further, the big end both sides of the T-shaped frame are provided with clip slot, the pair of fixed contact is by a pair of pressing plates and
One fixing screws are limited in the clip slot of both sides respectively, and adjusting screw adjusts the overhang of a pair of fixed contacts and demarcates position to reach
Further, also including nut shim, the nut shim compresses bushing, makes the lower surface of bushing push against shell
Step surface, bushing limit screw adapter shaft to position, it is ensured that link gear slides in the chute of T-shaped frame.
Further, also including retainer ring and lid, the Fixing shrink ring is on the outer cylinder of cam, and is arranged on lid
On, lid is arranged on T-shaped frame by screw, and the step at the screw hole location of the lid limits the axially-movable of cam.
Further, the prism table is fixed in the corresponding hole position in the middle part of the small end of T-shaped frame by the second fixing screws, and
Fixation is tightened by turnbuckle in lower end, in prism bar insertion prism table.
Further, the center of circle O of the bias on the cam1Side is provided with the first labelling, on the cam not
Eccentric center of circle O sides are provided with the second labelling.
The little jaw of track plates measures the measuring method of frame, and the method is comprised the following steps：
1) prism bar is arranged on T-shaped frame, and is fixed tightly with turnbuckle；
2) rotating cam makes the second labelling on cam near prism bar side, then promotes whole link gear to prism bar
Direction sliding, until can not slide；
3) little jaw measurement frame is positioned on track, the positioning cone insertion of the mandrel bottom of screw adapter is held
In the service sleeve hole of rail platform, meanwhile, three positioning supporting screws on little jaw measurement frame are supported on support rail table top to be protected
Hold Full connected；
4) rotating cam makes the first labelling near prism bar side, up to the slope of a pair of fixed contact abutting tracks,
Then prismosphere is placed on prism bar and starts measurement.
Further, in accurate adjustment operation, frame is measured by 2 little jaws of left and right placement, while detecting left and right two
The range error of individual track.
The invention has the beneficial effects as follows：The geometry state of the abundant analog orbit plate of little jaw frame of the present invention, solves
The orientation problem in mileage direction, screw adapter make positioning relatively reliable, can compensate size (shape) error of nail simultaneously
The installation caused with site error is interfered, it is ensured that the center of prismosphere is on the transverse center face of sleeper；The present invention has three
On support rail table top, design, processing and three contacts of accuracy guarantee assembled are in same plane to individual contact support, while
Ensure that trueness error of the frame on elevation direction；Little jaw accurate adjustment frame be beyond vice jaw surface as horizontal basis of reference,
With the support rail face of little jaw as elevation basis of reference, simulate rail placement and restrained condition completely to calculate the adjustment of track plates
Amount, that is, consider impact of the rail cant incorrectness to elevation and the amount of laterally adjusting, it is also considered that mouth of tongs away from incorrectness
Impact to the amount of laterally adjusting；Vulnerable part in the little jaw frame of the present invention is set on the premise of structure overall precision is ensured
There is abrasion or can change spare part at any time when damaging, saved the cost and time safeguarded, improve with full interchangeability in meter
The invention will be further described below in conjunction with the accompanying drawings.
As Figure 1-Figure 5, the present invention includes T-shaped frame 3, and 3 big end both sides of T-shaped frame are provided with clip slot, and a pair of fixations are touched
1 is limited in the clip slot of both sides respectively by a pair of pressing plates 2 and the first fixing screws 29, the adjustment fixed contact 1 of adjusting screw 30
Overhang reaching calibration position；Prism table 4 is fixed on the corresponding aperture in the middle part of the small end of T-shaped frame 3 by the second fixing screws 21
In position, in the insertion prism table 4 of prism bar 5, and fixation is tightened by turnbuckle 7 in lower end.
Screw adapter is arranged in the waist type groove hole of the little side of T-shaped frame 3.Screw adapter includes mandrel 12, stage clip
13rd, shell 11 and bolt 19.Hollow in shell 11 is internally provided with stage clip 13 and mandrel 12, and 12 bottom of mandrel is positioning cone
6, stage clip 13 is enclosed within mandrel 12, the upper end of 19 fixed central spindle 12 of bolt.The effect of screw adapter is the measurement for making the present invention
Lateral attitude positioning of the frame on sleeper surface.
Screw adapter, bushing 10 and cam 9 constitute link gear, the shell 11 of the endoporus and screw adapter of bushing 10
Outer cylinder coordinate, the endoporus of cam 9 is nested with cooperations of the outer cylinder of bushing 10, and the outer cylinder of bushing 10 is the offer rotation of cam 9
The whole circumference mating surface of modulation, the effect of cam 9 are to make a pair of T-shaped frame 3 to consolidate in rotary course using the offset of cam 9
Determine contact 1 to be pushed against on support rail face, make entirely to measure frame position stably accurate；Nut shim 22 compresses bushing 10, makes bushing
10 lower surface pushes against the step surface of the shell 11 of screw adapter, such bushing 10 can limit screw adapter shaft to position
Put, it is ensured that link gear slides in the waist type groove hole of T-shaped frame 3；Retainer ring 14 is enclosed within the outer cylinder of cam 9, and is arranged on
On lid 15, lid 15 is arranged on T-shaped frame 3 by screw 16, and the step at the screw hole location of lid 15 limits cam 9
Axially-movable, retainer ring 14 can prevent dust from entering inner chamber affects Adjustment effect.Link gear in lid 15, retainer ring 14 about
Mobile adjustment in the waist type groove hole of the T-shaped frame 3 of beam, can compensate simultaneously road nail on support rail table top size (shape) error and
The center of circle O1 sides of the bias on cam 9 are provided with the first labelling 20, the not eccentric center of circle O sides on cam 9
The second labelling 18 is provided with, as shown in figure 5, when cam 9 is during rotating around center of circle O, the first labelling 20 of eccentric side
Outside cylinder is farther with a distance from the O of the center of circle, and the outside cylinder of 18 side of the second labelling is closer to the distance from center of circle O, the difference of two distances
Value makes cam 9 different from the exposure level of T-shaped frame 3 in rotary course, thus produces and is fixed effect.
Supporting screw 8 is fixed in 3 corresponding mating holes of T-shaped frame by nut collar 24, and supporting screw 8 arranges three, point
It is not symmetrical arranged in the axis of T-shaped frame 3 and big end both sides, three contacts of three 8 lower ends of supporting screw constitute an isosceles
Triangle, as shown in Figure 2.Processing and assembling ensure that the bottom surface of three supporting screws 8 is in same plane, are supported on jointly support rail
On table top.
During use, prism bar 5 is arranged on T-shaped frame 3, and is fixed tightly with turnbuckle 7, rotation cam 9 is made on cam 9
The second labelling 18 near 5 side of prism bar, then promote direction sliding of the whole link gear to prism bar 5, until can not slide
It is dynamic.Then, measurement frame is positioned on track, the insertion track of positioning cone 6 of 12 bottom of mandrel of screw adapter
Service sleeve hole in, while the three positioning supporting screws 8 measured on frame are supported on support rail table top and keep Full connected.Rotation
Rotating cam 9 makes the first labelling 20 near 5 side of prism bar, up to the slope of a pair of abutting tracks of fixed contact 1, then by ball
Prism 17 is placed on prism bar 5 and starts measurement.
The little jaw measurement frame of the invention it can in addition contain pass through left and right placement 2, can be examined in accurate adjustment operation simultaneously
Measure the range error (mouth of tongs away from) of two tracks in left and right, the buying of laying, fastener to follow-up rail and changing is provided