CN102535275B

CN102535275B - Calibrating device for standard frame of rail plate

Info

Publication number: CN102535275B
Application number: CN201210046912.3A
Authority: CN
Inventors: 刘成龙; 付恒友; 薛弼一; 杨雪峰
Original assignee: Southwest Jiaotong University; Third Railway Survey and Design Institute Group Corp
Current assignee: Southwest Jiaotong University; Third Railway Survey and Design Institute Group Corp
Priority date: 2012-02-28
Filing date: 2012-02-28
Publication date: 2014-03-05
Anticipated expiration: 2032-02-28
Also published as: CN102535275A

Abstract

The invention discloses a calibrating device for a standard frame of a rail plate. A first rail loading platform (1) and a second rail loading platform (2) are connected with a standard platform (3) through locking bolts; the top surfaces of the first rail loading platform (1) and the second rail loading platform (2) are in a same plane; the standard platform (3) is connected with a leveling fixed base (4) through locking bolts; the leveling fixed base (4) is locked on and connected with a base (5) through an expansion bolt; the first rail loading platform and the second rail loading platform are manufactured according to the structural design size of a CRTSII type rail plate; and the standard platform has a slope of 0.5% slope in the length direction. The calibrating device for the standard frame provided by the invention is used for supplying a stable standard platform to the calibrating of the standard frame of the CRTSII type rail plate and has the advantages of strong abrasive resistance, small temperature deformation, high machining accuracy, long-term stability, no precision drifting, high accuracy in standard frame placing and positioning, and excellent repeatability.

Description

Calibrating device for standard frame of rail plate

Affiliated technical field

The invention belongs to the reference device that high-speed railway accurate-adjusting equipment is demarcated, specifically CRTSII type track slab precision adjustment equipment standard framework is demarcated field.

Background technology

The ride comfort of the location precision track of high-speed railway track plate, track plates is accurately located, must know its actual spatial attitude, and the spatial attitude of track plates can be reflected by prism a plurality of and that track plates geometrical relationship is fixing, the most conventional equipment is accurate adjustment frame at present.A set of accurate adjustment frame is equipped with a standard frame and four measuring frame, and standard frame is called template, and each use measured frame and carried out before track slab precision adjustment operation, and the supporting template of all must take is calibrated them as benchmark.Template is in the frequent process of using, and its geometrical relationship will inevitably change, thus must carry out regular demarcation to it, thus guarantee the high accuracy of its supporting measurement frame.The fixed method of existing standard collimation mark is for choosing a CRTSII type track plates from CRTSII type track plates making sheet field people, therefrom intercept one, contain a pair of track, then use total station survey to be correctly placed in the coordinate of the template fixed end prism on track plates, carry out the demarcation of template.There is larger error in the design size of the reference platform that this method is used and CRTSII type track plates, and temperature influence is very large, simultaneously, in the selection of standard gauge guidance tape, be subject to the impact of human factor very large, be short of its leakproofness as benchmark, be not enough to guarantee the high accuracy of template, thereby affected the quality of track slab precision adjustment.

Summary of the invention

Above shortcoming in view of prior art, the object of the invention is, and provides a kind of high-precision for demarcating the device of template, makes it to have that abrasion resistance is strong, hardness is high, temperature deformation is little, effectively guarantees the feature of the stated accuracy of template.

The object of the invention is to realize by following means.

Calibrating device for standard frame of rail plate, the first track 1 is connected with reference platform 3 by lock-screw with the second track 2, and the end face of the first track 1 and the second track 2 is at grade; Reference platform 3 is connected with leveling fixed pedestal 4 by lock-screw; Leveling fixed pedestal 4 is locked and is connected in mutually base 5 by expansion bolt; The first track and the second track adopt CRTSII type track plates structure design size to make; The length direction of reference platform has 0.5% the gradient.

The first track 1 and its end face of the second track and jaw have identical dimensional structure, difference is that track end face is different to the height of reference platform, because reference platform length direction has 5/1000ths the gradient, make the end face of the first track 1 and the second track 2 at grade, therefore the thickness of the second track is greater than the first track, its thickness difference makes the first track end face and the second track end face in same level.

After this device for mechanical machines, it is installed.This device is placed on the firm cement base in basis, installation requirement is strictly undertaken by " CRTSII plate-type fragment-free track slab structural design drawing ", it is track bottom surface longitudinal axis level, and transversal line direction arranges 0.5% outside flowing water horizontal wall inscription, track end face keeps level with symmetrical cross section, track plates center.After Installation and Debugging and installation, in self check, all adopt accurate pincers worker level gauge and Tian Bao Trimble DiNi electronic level to carry out the detection of levelness to it.

Accurately complete install and stable after, can be used for follow-up staking-out work.Before each demarcation, first on each screw of track, place prism, by coordinate figure, calculate the spacing between them, then compare Theoretical Design value.If defective, need to re-start the self check of track.If qualified, the fixed end of template to be calibrated is placed in to the first track, on fixed end, two pincers pin contact completely with its mouth of tongs rail support groove side, with the coordinate at the spherical prism center above total station survey template fixed end; Then template fixed end is placed in to the second track, fixed end contacts completely with its mouth of tongs rail support groove side, and the spherical prism with total station survey fixed end top, records its coordinate.Ask for the spacing of two fixed end prismosphere centers in calibration coordinate system, and compare with design theory spacing 1500mm, if the limit of meet≤± 0.2mm of difference is poor, do not need template manually to adjust.Otherwise the stroke that need to adjust fixed end pincers pin, constantly repeats above-mentioned measurement, until difference is less than 0.2mm.Demarcate in the process of template, two pincers pin of fixed end should remain with mouth of tongs rail support groove side and contact completely, and template and track axis keeping parallelism.

Accompanying drawing explanation:

Fig. 1 is the front view of apparatus of the present invention.

Fig. 2 is the top view of Fig. 1.

Fig. 3 is the lateral view of the second track.

Fig. 4 is the lateral view of the first track.

The specific embodiment

Below in conjunction with accompanying drawing, the invention will be further described with concrete enforcement.The first track 1 and the second track 2 main materials are all with selecting the modified 45# steel that abrasion resistance is strong to do; Reference platform 3 selects that temperature deformation is little, good rigidly, hardness is high, abrasion resistance is strong natural granite stone are made.Fixed pedestal 4 materials are Q235 steel.

By Fig. 1, can be seen that CRTSII type calibrating device for standard frame of rail plate comprises the first track 1, the second track 2, reference platform 3, leveling fixed pedestal 4, cement seat 5; The first track 1 and the second track 2, completely according to the processing of CRTSII type track plates structure design precision size, are used lock-screw to be connected with reference platform 3; Described reference platform 3 is used lock-screw to be connected with leveling fixed pedestal 4; Described leveling fixed pedestal 4 is used expansion bolt to lock connected cement base 5.As shown in Figure 2, reference platform 3 laterally has 5/1000ths the gradient, vertical equity, and a pair of

precision level

301 and 302 vertically can be placed in its top, whole for the accurate adjustment of levelness; The second track 2 and the first track 1 are for placing template, the second track 2 is greater than the first track 1 because reference platform 3 has its thickness of the gradient, make track end face horizontal direction Central Symmetry, screw 201,202,203,101,102,103 all can be placed spherical prism, and the screw on the second track 2 201,202,203 respectively with the first track 1 on screw 101,102,103 contour.The lateral view of the second track 2 and the first track 1 shown in Fig. 3, Fig. 4.Detect while installing, template fixed end must contact with mouth of tongs rail support groove side 204,104 completely at its pincers pin of the second track 2 one sides and the first track 1 one sides.

In order accurately to simulate actual CRTSII type track plates track, consider the convenience of profile cutting forming simultaneously, and take into account the anti-wear performance of measuring contact surface, (thermal linear expansion coefficient is 11.59x10 to select modified 45# steel ^-6m/C °), as the material of main part of making the first and second tracks; Simultaneously, for guaranteeing its precision, all appearance and size and location dimension, all used CNC (Computer Numerical Control, computer digital control machine tool) the machining center integral body of 3 axle interlocks to cut (positioning precision: ± 0.007mm/300mm).In order to reduce the impact of environment temperature on whole detection platform, in design the bearing of reference platform is longitudinally being carried out to independent separate, therefore, the impact of variations in temperature on monitor station precision, depends on the physical attribute of reference platform material substantially; The reference platform of this verification table adopts temperature deformation, and little (thermal linear expansion coefficient is 4.61x10 ^-6m/C °), good rigidly, hardness is high and abrasion resistance is strong natural granite work made of stones (precision is 0 grade), its size can stable for extended periods of time, precision is not drifted about.It is Q235 steel that the fixed pedestal that leveling is used is made material, also uses 3 axle CNC machining centers to complete and forms (positioning precision: ± 0.01mm/300mm).

According to design drawing, adopt precise NC lathe machining to complete the manufacture of this device, afterwards this device is transported to infield, be placed on the firm cement base in the basis of prior making.During installation, strictly by " CRTSII plate-type fragment-free track slab structural design drawing ", undertaken, track bottom surface longitudinal axis level, and transversal line direction arranges 0.5% outside flowing water horizontal wall inscription, track end face keeps level with symmetrical cross section, track plates center.After Installation and Debugging and installation, in self check, adopt accurate pincers worker level gauge and Tian Bao Trimble DiNi electronic level to carry out the detection of levelness to it.

Installation and stable after, can be used for the staking-out work of template.Before each demarcation, first on each screw of track, place prism, by coordinate figure measurements and calculations, obtain the spacing between them, then the Theoretical Design value comparison corresponding with it.If defective, need to re-start the self check of track.If qualified, the fixed end of template to be calibrated is placed on to the first track, on fixed end, two pincers pin contact completely with this side mouth of tongs rail support groove side, spherical prism center with total station survey fixed end top, continuous several times is measured, record 5 times stable coordinate figure, obtain the average of this measuring point coordinate; Then template fixed end to be calibrated is placed on the second track 2, on fixed end, two pincers pin contact completely with this side mouth of tongs rail support groove side, with the spherical prism center of total powerstation duplicate measurements fixed end top, record stable coordinate figure 5 times, obtain the average of this point coordinates; Then calculate the spacing in calibration coordinate system between prism, if it is poor that the difference of the Theoretical Design size 1500.00mm of the spacing of trying to achieve and template is greater than the limit of 0.2mm, need by using inner hexagon spanner to unclamp set bolt, adjust the stroke of template fixed end pincers pin and mouth of tongs rail support groove contacts side surfaces end, then repeat said process, until meet poor demand limit.

Claims

1. calibrating device for standard frame of rail plate, is characterized in that, the first track (1) is connected with reference platform (3) by lock-screw with the second track (2), and the end face of the first track (1) and the second track (2) at grade; Reference platform (3) is connected with leveling fixed pedestal (4) by lock-screw; Leveling fixed pedestal (4) is locked and is connected in mutually base (5) by expansion bolt; The first track and the second track adopt CRTS II type track plates structure design size to make; The length direction of reference platform has 0.5% the gradient.

2. calibrating device for standard frame of rail plate according to claim 1, it is characterized in that, on described reference platform (3), be provided with a plurality of screws (101), (102), (103), (201), (202), (203) of placing spherical prism, the screw (201) on described the second track (2), (202), (203) are contour with (101), (102), (103) of the upper screw of the first track (1) respectively.