A slide rail profiler for rail top

Abstract

The present invention discloses a slide rail profiler for the top of a rail, mainly related to the field of rail profile measurement. It includes a fixed assembly, configured to be detachably fixed to the rail; a measuring assembly, configured to measure the curved surface of the rail top; the measuring assembly includes a profile adjustment frame and a measuring component, the bottom side of the profile adjustment frame is provided with a basic profile ruler, the bottom side edge of the basic profile ruler is a measuring edge corresponding to the theoretical profile surface, the profile adjustment frame is slidably connected to a sliding frame, the sliding trajectory of the sliding frame is a curve extending equidistantly along the measuring edge, and the measuring component is fixed on the sliding frame; the adjusting assembly is fixedly mounted on the fixed assembly, and is configured to adjust the position of the measuring assembly in a biaxial direction based on the vertical plane. The beneficial effect of the present invention is that it can achieve high-precision measurement of the running surface of the rail.

Description

Technical Field

[0001] The invention relates to the field of rail measurement, in particular to a slide rail type profiler used for the top of a rail. Background Art

[0002] In the production and operation of rails, the upper curved surface of the rail top is the rail running surface, which plays a key role in the matching application. The parameters of the rail top surface need to be paid high attention and maintained.

[0003] Existing measuring instruments are generally customized profile rulers. When used, the measurement results are greatly affected by the operating techniques and the measurement accuracy cannot be guaranteed. Summary of the invention

[0004] The object of the present invention is to provide a slide rail type profilometer for rail top, which can realize high-precision measurement of the rail running surface.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] A slide rail profiler for rail top, comprising:

[0007] A fixing assembly configured to achieve detachable fixing with the rail;

[0008] A measuring assembly configured to measure the curved surface of the rail top;

[0009] The measuring assembly comprises a profile adjustment frame and a measuring assembly, wherein a basic profile ruler is provided on the bottom side of the profile adjustment frame, and the bottom side edge of the basic profile ruler is a measuring edge corresponding to the theoretical profile surface, and a sliding frame is slidably connected to the profile adjustment frame, and the sliding track line of the sliding frame is a curve extending equidistantly along the measuring edge, and the measuring assembly is fixed on the sliding frame;

[0010] The adjusting assembly is fixedly mounted on the fixing assembly and is configured to adjust the position of the measuring assembly in a biaxial direction based on a vertical plane.

[0011] The outer end surface of the basic profile ruler is provided with a profile angle position scale, which is distributed along the measuring edge and corresponds to the grinding position.

[0012] The measuring component includes any one of a pen-shaped laser rangefinder, a dial indicator, an LVDT rangefinder, and a micrometer.

[0013] The top side of the profile adjustment frame is provided with a profile rack extending equidistant from the measuring edge, and track bars fixed to the profile adjustment frame are symmetrically provided on both sides of the profile rack, and the track bar is provided with an upper track surface on the top side, and a lower track surface on the bottom side of the track bar, and a positioning gear meshing with the profile rack is rotatably mounted on the sliding frame, and upper track wheels rotatably mounted with the sliding frame are symmetrically provided on both sides of the positioning gear, and a lower track wheel is rotatably mounted on the bottom of the sliding frame, and the upper track wheel cooperates with the upper track surface, and the lower track wheel cooperates with the lower track surface.

[0014] An upper connecting shaft is fixed to the top of the sliding frame, a lower connecting shaft is fixed to the bottom of the sliding frame, the upper connecting shaft is coaxial with the positioning gear and the upper track wheel, the lower connecting shaft is coaxial with the lower track wheel, a clearance hole is provided on the profile adjustment frame, the lower connecting shaft passes through the clearance hole and its front end is exposed in front of the profile adjustment frame, a mounting frame is provided in front of the profile adjustment frame, the upper connecting shaft is fixed to the top end of the mounting frame, the lower connecting shaft is fixed to the bottom end of the mounting frame, a clamping piece is provided at the bottom end of the mounting frame, a clamping position is provided on the clamping piece, and the clamping position is used to fix the measuring component.

[0015] The fixing assembly comprises a magnetic seat, and the magnetic seat is fixed to the rail by adsorption based on a controllable magnetic attraction force, and the fixing adjustment assembly is installed on the magnetic seat.

[0016] The adjustment assembly includes a lateral adjustment mechanism and a lifting adjustment mechanism.

[0017] The lifting adjustment mechanism comprises a vertical plate fixed on the fixed assembly, a lifting track is fixed on the vertical plate, a lifting slider is vertically slidably matched on the lifting track, and the lifting slider can be locked relative to the lifting track;

[0018] The lifting and lowering adjustment mechanism comprises a fixed block fixed on the lifting and lowering sliding block, the fixed block is provided with a sliding groove capable of horizontally sliding with the fixed block, and the profile adjustment frame is fixed on the sliding groove.

[0019] A linear rack is provided on a vertical end face of one side of the lifting track adjacent to the lifting slider, a mounting cavity is provided inside the lifting slider, a lifting gear is rotatably installed in the mounting cavity, an adjusting knob coaxially fixed with the lifting gear is rotatably connected to the outside of the lifting slider, a screw rod is also threadedly connected to the outside of the lifting slider, the inner end of the screw rod is tightly fitted with the lifting track, and a tightening knob is fixed to the outer end of the screw rod.

[0020] A transverse position marking line is provided on the top surface of the fixed block, and an alignment scale is provided on the top side end surface of the sliding groove. The transverse position marking line is used in conjunction with the alignment scale. The alignment scale realizes the increase or decrease of length data along the length direction of the sliding groove. The alignment scale line includes a zero scale line, and positive scale lines and negative scale lines are respectively provided on both sides of the zero scale line.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. The instrument is fixed to the rail through the fixing assembly, which makes the clamping stable and avoids shaking during manual operation and position mismatch during multiple measurements and comparisons;

[0023] 2. It can realize continuous measurement of the profile difference of continuous grinding angle position along the rail profile;

[0024] 3. While retaining the basic function of the traditional profile ruler to quickly judge the wear condition of the rail top based on vision, combined with the mature high-precision measuring tool of the distance measuring component, the high-precision and rapid acquisition of the rail grinding amount can be achieved. It is more accurate than the existing technology that uses a profile ruler with a limited combination of sieve rulers to measure the profile difference. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the present invention.

[0026] Figure 2 It is a schematic diagram of the present invention.

[0027] Figure 3 It is a top view of the present invention.

[0028] Figure 4 It is a schematic diagram of the measuring assembly of the present invention.

[0029] Figure 5 It is a schematic diagram of the measuring assembly of the present invention.

[0030] Figure 6 It is a schematic diagram of the profile adjustment frame and the sliding frame of the present invention.

[0031] Figure 7 It is a schematic diagram of the fixing assembly and the adjusting assembly of the present invention.

[0032] Figure 8 It is a schematic diagram of the fixing assembly and the adjusting assembly of the present invention.

[0033] Fig. 9 It is a schematic diagram of the present invention in use.

[0034] Fig.10 It is a front view of the present invention in use.

[0035] Numbers shown in the accompanying drawings:

[0036] 1. Profile adjustment frame; 2. Micrometer; 3. Basic profile ruler; 4. Profile angle position scale; 5. Profile rack; 6. Track bar; 7. Upper track wheel; 8. Lower track wheel; 9. Positioning gear; 10. Upper connecting shaft; 11. Lower connecting shaft; 12. Clearance hole; 13. Mounting frame; 14. Sliding frame; 15. Clamping piece; 16. Clamping position; 17. Magnetic seat; 18. Magnetic surface; 19. Handle switch; 20. Fixed seat; 21. Vertical plate; 22. Lifting track; 23. Linear rack; 24. Lifting slide block; 25. Adjustment knob; 26. Tightening knob; 27. Fixed block; 28. Sliding groove; 29. ​​Horizontal position marking line; 30. Alignment scale. DETAILED DESCRIPTION

[0037] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the application equally.

[0038] The instruments, reagents, materials, etc. involved in the following embodiments, unless otherwise specified, are all conventional instruments, reagents, materials, etc. in the prior art and can be obtained through regular commercial channels. The experimental methods, detection methods, etc. involved in the following embodiments, unless otherwise specified, are all conventional experimental methods, detection methods, etc. in the prior art.

[0039] Embodiment: A slide rail profiler for rail top

[0040] like Figure 1-10 As shown, this example is used to measure the rail top (ie, the rail running surface) of the national standard 60kg / m GB60 rail.

[0041] There are also corresponding industry standards for this type of rail, specifically "TBT 2344-2012 Technical Conditions for Ordering 43kg m to 75kg m Rails" (TB / T 2344-2012). The upper curved surface of the rail top is the rail running surface, which plays a key role in matching applications. There are strict requirements for the shape and size of the curved surface, such as rail head width, rail top fullness, symmetry, curvature, inclination angle, and distance between each site. At the same time, in the standard, based on the above-mentioned size and shape specifications, a standard "theoretical profile" is defined for the rail running surface.

[0042] Its main structure includes:

[0043] 1) A measuring assembly configured to measure the curved surface of the rail top;

[0044] It mainly includes a profile adjustment frame 1 and a micrometer 2;

[0045] A basic profile ruler 3 is provided at the bottom side of the profile adjustment frame, and the bottom side edge of the basic profile ruler is a measuring edge, and the measuring edge corresponds to the theoretical profile surface.

[0046] The outer end surface of the basic profile ruler 3 is provided with a visual profile angle position scale 4. The profile angle position scale 4 is distributed along the measuring edge. The length of each scale line of the profile angle position scale 4 corresponds to the normal line of the theoretical profile.

[0047] The top side of the profile adjustment frame 1 is provided with a profile rack 5 extending equidistantly from the measuring edge, based on which the normal line of the profile scale bar is always in the same direction as the normal line of the theoretical profile surface.

[0048] The two sides of the profile rack 5 are symmetrically provided with track bars 6 fixed on the profile adjustment frame 1. The track bar 6 is provided with an upper track surface on the top side, and the track bar 6 is provided with a lower track surface on the bottom side. The upper track surface is an upwardly protruding ∧ shape, and the lower track surface is a downwardly protruding ∧ shape, and the upper track surface and the lower track surface are respectively extended equidistantly relative to the measuring edge. The guidance and constraint of the sliding trajectory line strictly following the theoretical profile surface are achieved. At the same time, based on the constraint structure of the upper and lower double-layer track surfaces, the accuracy and stability of the stroke constraint are improved. The stroke of the sliding frame 14 on the profile adjustment frame 1 is made consistent with the curved surface height of the theoretical profile, thereby ensuring that the direction of the micrometer pointer is always along the standard profile normal.

[0049] The profile adjustment frame 1 is slidably matched with a sliding frame 14, a positioning gear 9 is rotatably installed on the top of the sliding frame 14, and the positioning gear 9 is meshed with the profile rack 5. Upper track wheels 7 rotatably installed with the sliding frame 14 are symmetrically arranged on both sides of the positioning gear 9, and a lower track wheel 8 is rotatably installed at the bottom of the sliding frame 14. The upper track wheel 7 is located above the upper track surface, and the upper track wheel 7 is adapted to the upper track surface. The lower track wheel 8 is located below the lower track surface, and the lower track wheel 8 is used in conjunction with the lower track surface, so as to realize the limit constraint on the travel of the sliding frame 14.

[0050] An upper connecting shaft 10 is fixed to the top of the sliding frame 14, and a lower connecting shaft 11 is fixed to the bottom of the sliding frame 14. The upper connecting shaft 10 is coaxial with the positioning gear 9 and the upper track wheel 7, and the lower connecting shaft 11 is coaxial with the lower track wheel 8. A clearance hole 12 is provided on the profile adjustment frame 1, and the lower connecting shaft 11 passes through the clearance hole 12 and its front end is exposed in front of the profile adjustment frame 1.

[0051] The distance from the upper connecting axis to the lower connecting axis is actually equal to the upper connecting axis radius + the upper and lower track distance + the lower connecting axis radius. In this way, the normal between the two parallel curves is taken as the shortest distance so that when the dial 9 slides on the rack, 13 is always perpendicular to the upper and lower tracks, so that the measured degree corresponds to the direction of the scale line on the profile ruler.

[0052] A mounting frame 13 is provided in front of the profile adjustment frame 1, the upper connecting shaft 10 is fixed at the top of the mounting frame 13, the lower connecting shaft 11 is fixed at the bottom of the mounting frame 13, the length direction of the mounting frame 13 is perpendicular to the measuring edge, and a clamping member 15 is provided at the bottom of the mounting frame 13, the clamping member 15 is a clamping structure clamping member 15 of the prior art, and is not limited to this example and other clamping members 15 may also be used. A clamping position 16 is provided on the clamping member 15, and the axis of the clamping position 16 is consistent with the normal of the theoretical profile. The clamping position 16 is used to fix the micrometer 2. Based on this structure, the micrometer 2 can be detachably installed on the profile adjustment frame 1, and the profile adjustment frame 1 can realize a curved stroke along the theoretical profile, and the normal of the micrometer 2 can always keep corresponding to the normal of the measuring edge during the stroke.

[0053] Based on this example, the clamping member 15 includes a first clamping plate and a second clamping plate that are arranged opposite to each other. The first clamping plate and the second clamping plate are fixed by bolts on one side away from the mounting frame 13. The first clamping plate and the second clamping plate are provided with arc grooves on opposite sides. The arc grooves constitute the clamping position 16, and the axis of the arc groove is consistent with the normal of the measuring edge.

[0054] Based on the above structure, the pointer of the micrometer 2 and the movement of the micrometer 2 can correspond to the theoretical profile height. The micrometer can measure the distance from the reference surface to the actual rail profile at each grinding angle (within the resolution range), and then determine the grinding amount at each grinding position through simple conversion, with a measurement accuracy of ±0.002mm.

[0055] 2) The fixing assembly is configured to achieve detachable fixing with the rail, so that during measurement, the profile ruler can be better fixed on the rail, and then the correspondence with the rail can be obtained through fine adjustment, so as to achieve stable measurement and improve measurement accuracy;

[0056] Based on the characteristics of the rail, a quick-release fixing component that can be quickly fixed and easy to operate is selected. This example uses a magnetic seat 17. One side of the magnetic seat 17 is provided with a magnetic surface 18 adapted to the lower jaws on both sides of the rail top. The magnetic surface 18 is adapted to the angled curved surface of the lower jaw. The magnetic seat 17 is a magnetic seat 17 commonly used in the prior art, and its selection does not affect the fixing effect and function with the rail. The magnetic surface 18 is V-shaped to match the positioning surface. The magnetic seat 17 is equipped with a handle switch 19 that controls the magnetism of the magnetic surface 18. The handle switch 19 controls the rotation of the magnetic block inside the magnetic seat 17, thereby making it magnetic or demagnetized on the magnetic surface 18.

[0057] A fixing seat 20 is disposed on the top of the magnetic seat 17 , and a screw groove for installation is disposed on the fixing seat 20 for fixing and installing the adjustment assembly.

[0058] 3) an adjustment assembly, fixedly mounted on the fixed assembly and configured to adjust the position of the measuring assembly in a biaxial direction based on a vertical plane;

[0059] Specifically, the adjustment assembly includes a lateral adjustment mechanism and a lifting adjustment mechanism.

[0060] The lifting and adjusting mechanism comprises: a vertical plate 21, a lifting track 22, a lifting slider 24, a lifting gear, an adjusting knob 25, and a tightening knob 26;

[0061] The vertical plate 21 is an inverted T-shaped structure. The bottom of the vertical plate 21 is fixedly mounted on the fixing seat 20 by bolts to support the entire lifting and adjusting mechanism. The lifting rail 22 extends vertically and is fixed on the vertical plate 21. The lifting slider 24 is connected to the lifting rail 22 by sliding up and down. A straight rack 23 is provided on the vertical end surface of the lifting rail 22 adjacent to the lifting slider 24. A mounting cavity is provided in the lifting slider 24. The lifting gear is rotatably mounted in the mounting cavity. The lifting gear is meshed with the linear rack 23 to control the lifting and lowering of the lifting slider 24. The adjusting knob 25 is rotationally connected to the lifting slider 24, and the adjusting knob 25 is circumferentially fixed to the lifting gear. The tightening knob 26 is provided with a screw at one end adjacent to the lifting slider 24. A screw hole is provided on the side wall of the mounting cavity for passing the screw. The screw is threadedly matched with the screw hole. The screw passes through the side wall of the mounting cavity from the screw hole, and the inner end of the screw is tightened on the lifting track 22 to achieve fixed locking of the lifting slider 24.

[0062] The lateral adjustment mechanism includes: a fixed block; 27, a sliding slot 28;

[0063] The fixed block 27 is fixedly mounted on one side of the lifting slider 24;

[0064] The fixed block 27 is provided with a horizontally extending convex slider on one end face away from the lifting slider 24, and the sliding groove 28 is provided on the side adjacent to the fixed block 27, and a sliding groove connected to the convex slider for left and right sliding is provided; thereby achieving sliding cooperation between the two.

[0065] The top surface of the fixed block 27 is provided with a transverse position marking line 29,

[0066] A positioning scale 30 is provided on the top side end surface of the sliding groove 28, and the positioning scale 30 realizes the increase and decrease of the length data along the length direction of the sliding groove 28. The positioning scale 30 line includes a zero scale line, and positive scale lines and negative scale lines are respectively provided on both sides of the zero scale line.

[0067] The transverse position marking line 29 is used in conjunction with the alignment scale 30 .

[0068] The profile adjustment frame 1 is fixed on the end surface of one side of the sliding groove 28 away from the fixed block 27.

[0069] Through the adjustment mechanism, when the magnetic seat 17 is adsorbed and fixed on one side of the rail top, the height and left and right position can be fine-tuned through the lifting and lowering adjustment mechanism and the lateral adjustment mechanism, so that the measuring edge can fall on the running surface of the rail to be measured. The measurement is positioned and aligned. When it is applied specifically, the method is as follows:

[0070] Operate the handle switch to fix the magnetic seat relative to the rail top;

[0071] The basic profile ruler is fine-tuned by adjusting the assembly so that its measuring edge is perpendicular to the surface of the rail top, that is, the basic profile ruler is in vertical contact with the rail top; the lower measuring edge of the profile ruler is the profile of the standard rail top of the corresponding model of the inspected rail (when not worn or deformed).

[0072] When the profile ruler contacts the rail surface to be inspected, insert the micrometer and fix its position (in the measurement of the height of each angle of the profile, the clamping position of the micrometer remains unchanged), obtain the value displayed on the micrometer at each angle position, that is, the relative value of the height of the gap between the profile ruler and the rail at each angle position, and record it as d n , where the subscript “n” represents the angular position.

[0073] The degrees obtained include d 20 ,d 10 ,d 0 ,d -5 Etc., and then the grinding amount D at each position can be calculated by the following formula 角度 .

[0074] D 角度 =d 角度 -max[d 20 ,d10 ,d 0 ,d -5 ...]-Tolerance zone (D 角度 >0)

[0075] The "tolerance zone" corresponds to the detection error value of the profile after grinding in the "High-speed Railway Rail Grinding Management Measures" (China Railway General Transport

[2014] No. 357), or the required rail profile error value set manually.

Claims

1. A slide rail profiler for rail top, characterized in that: It includes: a fixing assembly configured to achieve detachable fixing with a rail; A measuring assembly configured to measure the curved surface of the rail top; The measuring assembly comprises a profile adjustment frame and a measuring assembly, wherein a basic profile ruler is provided on the bottom side of the profile adjustment frame, and the bottom side edge of the basic profile ruler is a measuring edge corresponding to the theoretical profile surface, and a sliding frame is slidably connected to the profile adjustment frame, and the sliding track line of the sliding frame is a curve extending equidistantly along the measuring edge, and the measuring assembly is fixed on the sliding frame; An adjusting assembly, fixedly mounted on the fixing assembly and configured to adjust the position of the measuring assembly in a biaxial direction based on a vertical plane; The outer end surface of the basic profile ruler is provided with a profile angle position scale, the profile angle position scale is distributed along the measuring edge, and the profile angle position scale corresponds to the grinding position; The measuring component includes any one of a pen-shaped laser rangefinder, a dial indicator, an LVDT rangefinder, and a micrometer; The top side of the profile adjustment frame is provided with a profile rack extending equidistant from the measuring edge, and track bars fixed to the profile adjustment frame are symmetrically provided on both sides of the profile rack, and the track bar is provided with an upper track surface on the top side, and a lower track surface on the bottom side of the track bar, and a positioning gear meshing with the profile rack is rotatably installed on the sliding frame, and upper track wheels rotatably installed with the sliding frame are symmetrically provided on both sides of the positioning gear, and a lower track wheel is rotatably installed at the bottom of the sliding frame, and the upper track wheel cooperates with the upper track surface, and the lower track wheel cooperates with the lower track surface; An upper connecting shaft is fixed to the top of the sliding frame, a lower connecting shaft is fixed to the bottom of the sliding frame, the upper connecting shaft is coaxial with the positioning gear and the upper track wheel, the lower connecting shaft is coaxial with the lower track wheel, a clearance hole is provided on the profile adjustment frame, the lower connecting shaft passes through the clearance hole and its front end is exposed in front of the profile adjustment frame, a mounting frame is provided in front of the profile adjustment frame, the upper connecting shaft is fixed to the top end of the mounting frame, the lower connecting shaft is fixed to the bottom end of the mounting frame, a clamping piece is provided at the bottom end of the mounting frame, a clamping position is provided on the clamping piece, and the clamping position is used to fix the measuring component.

2. A sliding rail profiler for rail top according to claim 1, characterized in that: The fixing assembly comprises a magnetic seat, and the magnetic seat is fixed to the rail by adsorption based on a controllable magnetic attraction force, and the fixing adjustment assembly is installed on the magnetic seat.

3. A sliding rail profiler for rail top according to claim 1, characterized in that: The adjustment assembly includes a lateral adjustment mechanism and a lifting adjustment mechanism. The lifting adjustment mechanism comprises a vertical plate fixed on the fixed assembly, a lifting track is fixed on the vertical plate, a lifting slider is vertically slidably matched on the lifting track, and the lifting slider can be locked relative to the lifting track; The lifting and lowering adjustment mechanism comprises a fixed block fixed on the lifting and lowering sliding block, the fixed block is provided with a sliding groove capable of horizontally sliding with the fixed block, and the profile adjustment frame is fixed on the sliding groove.

4. A sliding rail profiler for rail top according to claim 3, characterized in that: A linear rack is provided on a vertical end face of one side of the lifting track adjacent to the lifting slider, a mounting cavity is provided inside the lifting slider, a lifting gear is rotatably installed in the mounting cavity, an adjusting knob coaxially fixed with the lifting gear is rotatably connected to the outside of the lifting slider, a screw rod is also threadedly connected to the outside of the lifting slider, the inner end of the screw rod is tightly fitted with the lifting track, and a tightening knob is fixed to the outer end of the screw rod.

5. The slide rail profilometer for rail top according to claim 3, characterized in that: A transverse position marking line is provided on the top surface of the fixed block, and an alignment scale is provided on the top side end surface of the sliding groove. The transverse position marking line is used in conjunction with the alignment scale. The alignment scale realizes the increase or decrease of the length data along the length direction of the sliding groove. The alignment scale includes a zero scale line, and positive scale lines and negative scale lines are respectively provided on both sides of the zero scale line.

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