CN213657681U - Contact rail geometric parameter measuring scale based on vernier precision - Google Patents
Contact rail geometric parameter measuring scale based on vernier precision Download PDFInfo
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- CN213657681U CN213657681U CN202022414114.4U CN202022414114U CN213657681U CN 213657681 U CN213657681 U CN 213657681U CN 202022414114 U CN202022414114 U CN 202022414114U CN 213657681 U CN213657681 U CN 213657681U
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Abstract
The utility model relates to a touch rail geometric parameters dipperstick based on vernier precision, include and be used for realizing measuring main scale, dipperstick fixed arm to touch rail centre gripping measuring and be used for realizing the dipperstick mounting fixture to nearly touch rail side rail centre gripping measuring, the measuring main scale be the H type to with dipperstick fixed arm one end nested connection, but dipperstick mounting fixture rotation regulation be connected with the dipperstick fixed arm other end. Compared with the prior art, the utility model has the advantages of simultaneous measurement leads high value and pulling-out value, improves measurement accuracy, is convenient for adjust and install.
Description
Technical Field
The utility model belongs to the technical field of the railway engineering technique and specifically relates to a conductor rail geometric parameters dipperstick based on vernier precision is related to.
Background
The power supply contact rail in the urban rail system is also called a contact rail, and is a separate rail for supplying power, the contact rail is a device for transmitting electric energy to electric traction vehicles of the subway and the urban rail traffic system and is also basic equipment of the railway transportation industry, and the contact rail power supply system has the characteristics of simple structure, simplicity and convenience in installation, low erection cost, strong natural disaster resistance, good stability, no influence on urban attractiveness and the like.
The geometric parameters of the contact rail mainly comprise a pull-out value and a lead-in height value, the geometric state parameters of the contact rail directly influence the normal operation of a rail locomotive, the deviation of the pull-out value can cause mechanical damage to a collector shoe and the contact rail, the deviation of the lead-in height value can cause the contact rail and the collector shoe to be off-line, the collector shoe and the contact rail can collide with each other in severe cases to cause safety accidents, and the detection of the geometric parameter state of the contact rail in a train operation interval has very important significance for the subway operation safety and construction quality inspection.
In the prior art, the high value of leading and the value of drawing of contact rail are detected to the mode that adopts artifical manual detection mostly, artifical detection method relies on traditional contact rail detection ruler, can only measure respectively to the value of drawing and the high value parameter of leading of contact rail, and because traditional measuring tool's precision is limited, often can be to the great measuring error of measuring result parameter, in the engineering testing process of reality, survey crew need carry out single measurement operation respectively to the value of leading and drawing of contact rail, need continuous switching measuring tool to measure and count, it is loaded down with trivial details to have operation process, shortcoming such as detection efficiency is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a contact rail geometric parameters dipperstick based on vernier precision in order to overcome the defect that above-mentioned prior art exists.
The purpose of the utility model can be realized through the following technical scheme:
the utility model provides a touch rail geometric parameters dipperstick based on vernier precision, includes and is used for realizing measuring main scale, the dipperstick fixed arm to touch rail centre gripping measuring and is used for realizing the dipperstick mounting fixture to nearly touch rail side rail centre gripping measuring, the measuring main scale be the H type to with dipperstick fixed arm one end nested connection, but dipperstick mounting fixture rotation regulation be connected with dipperstick fixed arm other end.
The measuring main scale comprises a first measuring main scale, a second measuring main scale, a first sliding calibration scale and a connecting main scale, the lower end of the first measuring main scale is perpendicularly connected with the left end of the second measuring main scale, the first sliding calibration scale is arranged in parallel with the first measuring main scale, the lower end of the first sliding calibration scale is slidably adjusted on the second measuring main scale, and the connecting main scale can be vertically slidably arranged between the first measuring main scale and the first sliding calibration scale and is arranged in parallel with the second measuring main scale.
The left end of the connecting main ruler is connected with the first measuring main ruler in a manner that the auxiliary ruler can slide up and down through the first vernier, vertical adjusting and positioning are realized through the first vernier measuring auxiliary ruler sliding fixing piece and the fixing screw, the right end of the connecting main ruler is connected with the first sliding scaling ruler in a manner that the main ruler fixing slide fastener can slide up and down, the lower end of the first sliding scaling ruler is connected with the second measuring main ruler in a manner that the auxiliary ruler can slide left and right through the second vernier measuring auxiliary ruler, and horizontal adjusting and positioning are realized through the second vernier measuring auxiliary ruler sliding fixing piece and the fixing screw.
The right end of the second measuring main ruler is inserted into the left end of the fixing arm of the measuring ruler, a third vernier measuring auxiliary ruler is arranged at the insertion position, and horizontal adjustment and positioning are achieved through the third vernier measuring auxiliary ruler sliding fixing piece and the fixing screw.
The top end of the first measuring main ruler is provided with a first fixed measuring claw, the top end of the first sliding calibration ruler is provided with a second fixed measuring claw, and during measurement, the first fixed measuring claw and the second fixed measuring claw are respectively clamped on the left side surface and the right side surface of the contact rail and connected with the upper end surface of the main ruler to be tightly attached to the bottom surface of the contact rail.
The measuring scale fixing clamp comprises a fixing clamp body, a near-contact rail side fixing wall and a far-contact rail side fixing wall which are respectively and vertically fixed at the left end and the right end of the fixing clamp body, a second steel rail fastener installed on the inner side of the far-contact rail side fixing wall and a first steel rail fastener installed on the inner side of the near-contact rail side fixing wall.
First rail fastener pass through first fastener connecting rod and be connected with rotary type fastening handle, when measuring, make first rail fastener and second rail fastener press from both sides tightly nearly contact with the rail side rail left and right sides through the rotary type fastening handle of screwing.
The left end face of the fixing clamp main body is rotatably adjusted through the rotary connecting part and is connected with the right end of the fixing arm of the measuring scale.
And a vertical calibration line is arranged on the rotary connecting part and used for realizing that the plane where the main measurement ruler is located is vertical to the horizontal plane during measurement.
The protection device is characterized in that a contact rail protection cover is arranged on the outer side of the contact rail, and the contact rail protection cover is fixed with the sleeper through a contact rail protection cover connecting component and a contact rail protection cover supporting component in sequence.
Compared with the prior art, the utility model has the advantages of it is following:
firstly, simultaneously measuring a lead-up value and a pull-out value: compared with the existing contact rail measuring scale in the past, the measuring scale can simultaneously provide a height guiding value and a pull-out value of the same contact rail point to be measured for simultaneous measurement, and does not need to adopt corresponding specific measuring scales for measurement respectively, so that the measurement error caused by the deviation of the measuring point due to the switching of a measuring tool when the same measuring point is measured is avoided.
Secondly, improving the measurement accuracy: the utility model discloses added detection method and structure based on vernier measurement at the in-process of design conductor rail geometric parameters dipperstick, can further carry out more accurate measurement and reading to conductor rail geometric parameters's testing result to effectively improve measurement accuracy, compensate the lower shortcoming of traditional measuring method precision.
Thirdly, being convenient for adjusting and installing: at the in-process of design and completion this dipperstick, adopt slidable, flexible and revolution mechanic in a large number to realize the design of dipperstick overall structure, can effectively realize the flexible regulation and the installation of dipperstick, make the utility model has the advantages of aspect shrink, the tendency of fortune and storage.
Drawings
Fig. 1 is a schematic view of the working principle of the present invention.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a schematic view of the structure of the clamp.
Description of reference numerals:
101. a contact rail shield connecting part 102, a contact rail shield supporting part 103, a sleeper 104, a contact rail shield 105, a contact rail 106, a contact rail geometric parameter measuring scale main body 107, a contact rail geometric parameter measuring scale clamp 108, a near contact rail side steel rail 109, a far contact rail side steel rail 201, a first fixed measuring jaw 202, a first measuring main scale 203, a first vernier measuring secondary scale 204, a first vernier measuring secondary scale sliding fixing part and a fixing screw 205, a measuring main scale 206, a connecting main scale 207, a second fixed measuring jaw 208, a connecting main scale fixing slide fastener 209, a first sliding scale 210, a second vernier measuring secondary scale 211, a third vernier measuring secondary scale 212, a measuring scale fixing arm 213, a second measuring main scale 214, a second measuring secondary scale sliding fixing screw 215, a third vernier measuring secondary scale sliding fixing part and a fixing screw, 216. dipperstick mounting fixture, 217, rotatory connecting part, 218, perpendicular calibration line, 301, first fastener connecting rod, 302, dipperstick connecting part, 303, mounting fixture main part, 304, near contact rail side fixed wall, 305, far contact rail side fixed wall, 306, first rail fastener, 307, second rail fastener, 308, rotary type fastening handle.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In this embodiment, the application working scenario of the contact rail geometric parameter measuring scale mainly includes a contact rail shield connecting part 101, a contact rail shield supporting part 102, a tie 103, a contact rail shield 104, a contact rail 105, a contact rail geometric parameter measuring scale main body 106, a contact rail geometric parameter measuring scale clamp 107, a near contact rail side steel rail 108, and a far contact rail side steel rail 109.
As shown in fig. 1, the utility model provides a touch rail geometric parameters dipperstick (hereinafter referred to as touch rail geometric parameters dipperstick) based on vernier precision, wherein, touch rail geometric parameters dipperstick mainly comprises touch rail geometric parameters dipperstick main part 106 and touch rail geometric parameters dipperstick anchor clamps 107 two parts, and touch rail geometric parameters dipperstick main part 106 is used for the accurate actual height value and the pulling value of measuring out of installing touch rail 105 in nearly touch rail side rail 108 one side;
the high value of the contact rail is defined as:
the vertical distance from the middle point of the contact surface of the contact rail to the connecting line of the central position of the rail surface of the traveling rail;
the busbar pull-out value is defined as: the transverse horizontal distance from the middle point of the contact surface of the contact rail to the center of the top surface of the running rail.
The contact rail 105 is fixedly arranged on the sleeper 103 through the contact rail shield connecting part 101 and the contact rail shield supporting part 102, and is arranged in the contact rail shield 104 to prevent the contact rail from being unnecessarily damaged in the natural environment due to direct exposure;
in addition, the geometric parameter measuring scale clamp 107 stably fixes the geometric parameter measuring scale main body 106 on the side rail 108 near the contact rail, so as to ensure that the geometric parameter measuring scale main body 106 of the contact rail can stably and accurately read out the reading of the measuring scale, and complete the accurate measurement of the geometric parameter of the contact rail.
Because the rail abrasion caused by the train running rail running and loading is mainly generated at the inner measurement of the near contact rail side rail 108 and the far contact rail side rail 109, and the action and the loss on the outer side of the rail are smaller, in the practical measurement of the example, firstly, the horizontal distance from the outer surface of the near contact rail side rail 108 to the center of the top surface of the running rail is taken as a fixed value, the pull-out value parameter of the contact rail is accurately measured on the horizontal distance from the middle point of the contact surface of the contact rail to the outer surface of the near contact rail side rail 108 mainly through the contact rail geometric parameter measuring scale main body 106, and the parameter is taken as the pull-out value parameter of the contact rail, which needs to be measured in the scheme.
As shown in fig. 2, the primary components of the geometric parameter measuring scale for touch rail include a first fixed measuring claw 201, a first main measuring ruler 202, a first auxiliary vernier measuring ruler 203, a first auxiliary vernier measuring ruler sliding fixture and fixing screw 204, a main measuring ruler 205, a main connecting ruler 206, a second fixed measuring claw 207, a main connecting ruler fixing slider 208, a first sliding calibration ruler 209, a second auxiliary vernier measuring ruler 210, a third auxiliary vernier measuring ruler 211, a measuring ruler fixing arm 212, a second main measuring ruler 213, a second auxiliary vernier measuring ruler sliding fixture and fixing screw 214, a third auxiliary vernier measuring ruler sliding fixture and fixing screw 215, a measuring ruler fixing clamp 216, a rotary connecting component 217 and a vertical calibration line 218, and the specific structure and connection relationship thereof are as follows:
the geometric parameter measuring scale for the contact rail mainly comprises three major parts, namely a measuring main scale 205, a measuring scale fixing arm 212 and a measuring scale fixing clamp 216, wherein the measuring main scale 205 is a combined measuring scale structure based on vernier accuracy, specifically an H-shaped structure is used as a main body structure for designing the measuring scale, specifically comprises a first measuring main scale 202, a connecting main scale 206, a first sliding scaling scale 209, a second measuring main scale 213, other auxiliary structures (a first vernier measuring auxiliary scale sliding fixing part and a fixing screw 204, a connecting main scale fixing slide fastener 208, a second vernier measuring auxiliary scale sliding fixing part and a fixing screw 214, a third vernier measuring auxiliary scale sliding fixing part and a fixing screw 215) and a combined structure (a first vernier measuring auxiliary scale 203, a second vernier measuring auxiliary scale 210 and a third vernier measuring auxiliary scale 211) for more accurate measurement, the measuring scale fixing arm 212 is connected with the measuring scale fixing clamp 216 through a rotary connecting part 217, and the measuring scale fixing arm 212 can enable the first fixed measuring claw 201 and the second fixed measuring claw 207 of the pulled measuring main scale 205 to be sleeved on two sides of the steel rail to be measured by rotating the angle of the rotating connecting part 217, and the angles of the measuring scale fixing arm 212 and the measuring main scale 205 are rotatably adjusted according to the vertical calibration line 218 on the rotating connecting part 217, so that the directions of the first measuring main scale 202 and the first sliding calibration scale 209 of the measuring main scale 205 are just vertical to the horizontal plane.
In this embodiment, the main measurement ruler 205 is nested in the fixed-length measuring ruler fixing arm 212, and a sliding telescopic structure is provided in the measuring ruler fixing arm 212 to retract the main measurement ruler 205 into the measuring ruler fixing arm 212, so as to facilitate carrying, transportation and storage.
The third vernier measurement auxiliary ruler 211 and the third vernier measurement auxiliary ruler sliding fixing piece and the fixing screw 215 are arranged at one section of the near contact rail of the measuring ruler fixing arm 212, so that the actual length of the pulled measuring main ruler 205 based on the vernier accuracy can be measured and read. In addition, during measurement, the first vernier measurement auxiliary ruler 203, the first vernier measurement auxiliary ruler sliding fixing piece and fixing screw 204, the connecting main ruler 206 and the connecting main ruler fixing slide fastener 208 are taken as a whole, the connecting main ruler 206 is fixed between the first measurement main ruler 202 and the first sliding calibration ruler 209 through the first vernier measurement auxiliary ruler sliding fixing piece and fixing screw 204 and the connecting main ruler fixing slide fastener 208, and can slide up and down by taking the first measurement main ruler 202 and the first sliding calibration ruler 209 as references according to actual use conditions, and when the connecting main ruler 206 slides to be attached to the bottom surface of a contact rail to be measured, the height guide value to be measured of the steel rail is measured and read by combining scales of the first measurement main ruler 202 and the first vernier measurement auxiliary ruler 203.
In addition, the second fixed measuring claw 207, the first sliding scale 209, the second vernier measuring sub-scale 210, the second vernier measuring sub-scale sliding fixture and the fixing screw 214 connect the first sliding scale 209 and the second measuring main scale 213 as a whole, and the first sliding scale 209 and the second vernier measuring sub-scale 210 slide left and right with the second measuring main scale 213 as a reference, and finally the second measuring main scale 213 and the second vernier measuring sub-scale 210 are combined to measure and read the width of the contact rail to be measured.
In actual operation, the measuring scale fixing jig 216 is first fixed stably to the near-contact rail side rail 108 in fig. 1, to ensure that the main measuring scale 205 is kept horizontal and stable during use. Then, the main scale 205 is measured by drawing out the main scale fixing arm 212, and the first fixed measuring jaw 201 and the second fixed measuring jaw 207 in the main scale 205 are just positioned at two sides of the steel rail to be measured by rotating and adjusting the rotating connecting part 217; adjusting the positions of the first main measurement ruler 202 and the first sliding scale ruler 209 through further left-right sliding, so that the main measurement ruler 205 is adjusted to the position where the first main measurement ruler 202 is attached to the left side of the contact rail; adjusting the first sliding calibration ruler 209 to a position where the second fixed measuring claw 207 is tightly attached to the right side of the contact rail, so that the first fixed measuring claw 201 and the second fixed measuring claw 207 can just completely clamp two sides of the contact rail to be measured; then, the position of the connecting main scale 206 is pushed up and down and adjusted, so that the connecting main scale 206 is just tightly attached to the bottom surface of the contact rail to be tested; finally, the rotary connecting member 217 connecting the measuring scale fixing arm 212 and the measuring scale fixing clamp 216 is adjusted again to make the vertical calibration line 218 of the member located at the correct position to ensure that the directions of the measuring main scale 205 and the measuring scale fixing arm 212 are just perpendicular to the horizontal ground, at this time, the contact rail measuring scale is already in the working measuring state through deployment and adjustment, and the data of the main scale and the vernier auxiliary scale of each part of the measuring scale can be read and measured, so that the measurement of the contact rail geometric parameters is finally completed.
On the premise of successfully deploying and adjusting the measuring scale, the height guiding value of the contact rail to be measured is measured by reading the readings of the first main measuring ruler 202 and the first vernier measuring auxiliary ruler 203, specifically:
suppose the true reading of the first measurement master 202 is L1The real reading of the first vernier measurement auxiliary ruler 203 is l1If the actual height H of the current contact rail to be tested is equal to L1+l1。
In addition, by reading the second measurement main scale 213; a second vernier measuring sub-scale 210; the reading of the third vernier measurement auxiliary ruler 211 is used for measuring the pull-out value of the contact rail to be measured, and the method specifically comprises the following steps:
assume that the true reading of the second measurement main scale 213 at the first sliding scale 209 is L2True reading at the dipperstick-fixing arm 212 is L3(ii) a The second vernier measurement minor 210 reads true l2(ii) a The third vernier measuring secondary ruler 211 has a real reading of l3(ii) a The length of the fixed arm 212 of the measuring scale is fixed length W, and the calculation formula of the pull-out value of the contact rail to be measured is as follows:
Y＝(L2+l2)/2+[(L3+l3)-(L2+l2)]＝2L3+2l3-L2-l2
the horizontal pull-out distance from the middle point of the contact surface of the contact rail to be measured to the outer surface of the steel rail on the side close to the contact rail based on the vernier accuracy can be calculated through the formula.
As shown in fig. 3, the structure of the measuring rule fixing clamp 216 mainly includes: the measuring scale connecting part 302, the fixing clamp body 303, a near contact rail side fixing wall 304, a far contact rail side fixing wall 305, a first steel rail fastener 306, a second steel rail fastener 307, a rotary fastening handle 308 and a first fastener connecting rod 301.
The mounting fixture main part 303 is connected with the contact rail geometric parameter measuring scale main part 106 (measuring scale fixing arm 212 right end) through the measuring scale connecting part 302 (i.e. the rotary connecting part 217), the measuring scale connecting part 302 is a connecting unit of measuring scale measurement and fixing device structure, has fixed connection and rotation function, and can be adjusted through rotating and adjusting the measuring angle of the part to the contact rail geometric parameter measuring scale main part 106 in the using process. Further, the measuring scale connecting member 302 has a vertical calibration line 218 for calibrating the angle of the contact rail geometric parameter measuring scale main body 106, so that the direction of the contact rail geometric parameter measuring scale main body 106 is always perpendicular to the horizontal plane during the actual measurement process.
In conjunction with fig. 1, during the operation and working of the geometric parameter measuring ruler for contact rails, the ruler fixing clamp 216 needs to be sleeved on the side rail 108 close to the contact rail, and the near-contact rail-side fixing wall 304 and the far-contact rail-side fixing wall 305 are brought close to the left and right sides of the near-contact rail-side rail 108, and the second rail fastening member 307 is fastened to the lower right side of the near contact rail side rail 108, the first rail fastening member 306 is tightened by rotating the rotatable fastening handle 308 connected by the first fastening member connecting rod 301, so that it can be stably clamped and fixed to the lower left side of the near contact rail side rail 108, and finally the fixing jig main body 303 can be stably fixed to the near contact rail side rail 108 by further adjustment, so that the contact rail geometric parameter measuring scale body 106 can measure and read the geometric parameters of the contact rail to be measured on the basis of keeping the contact rail horizontal.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a touch rail geometric parameters dipperstick based on vernier precision, its characterized in that, including be used for realizing measuring main scale (205), dipperstick fixed arm (212) measured to touch rail (105) centre gripping and be used for realizing dipperstick fixed clamp (216) measured to nearly touch rail side rail (108) centre gripping, measurement main scale (205) be the H type to with dipperstick fixed arm (212) one end nested connection, dipperstick fixed clamp (216) but rotation regulation be connected with dipperstick fixed arm (212) other end.
2. A geometric parameter measuring scale for touch rail based on vernier accuracy as claimed in claim 1, wherein said main measuring scale (205) comprises a first main measuring scale (202), a second main measuring scale (213), a first sliding scale (209) and a connecting scale (206), said first main measuring scale (202) is vertically connected to the left end of the second main measuring scale (213), said first sliding scale (209) is disposed in parallel with the first main measuring scale (202), and the lower end is slidably positioned on the second main measuring scale (213), said connecting scale (206) is slidably disposed between the first main measuring scale (202) and the first sliding scale (209) and in parallel with the second main measuring scale (213).
3. The contact rail geometric parameter measuring scale based on vernier accuracy as claimed in claim 2, wherein the left end of the connecting main scale (206) is connected with the first measuring main scale (202) through the first vernier measuring secondary scale (203) in a vertically slidable manner, and is vertically adjusted and positioned through the first vernier measuring secondary scale sliding fixing piece and the fixing screw, the right end of the connecting main scale fixing slide fastener (208) is connected with the first sliding scaling scale (209) in a vertically slidable manner, the lower end of the first sliding scaling scale (209) is connected with the second measuring main scale (213) through the second vernier measuring secondary scale sliding fixing piece (210) in a horizontally slidable manner, and is horizontally adjusted and positioned through the second vernier measuring secondary scale sliding fixing piece and the fixing screw.
4. The touch rail geometric parameter measuring ruler based on vernier accuracy as claimed in claim 2, wherein the right end of the second main measuring ruler (213) is inserted into the left end of the fixing arm (212) of the measuring ruler, and a third vernier measuring secondary ruler (211) is provided at the insertion position, and the horizontal adjustment positioning is realized by the third vernier measuring secondary ruler sliding fixing piece and the fixing screw.
5. The contact rail geometric parameter measuring scale based on vernier accuracy as claimed in claim 2, wherein the first main measuring scale (202) is provided with a first fixed measuring claw (201) at the top end, the first sliding scale is provided with a second fixed measuring claw (207) at the top end, and during measurement, the first fixed measuring claw (201) and the second fixed measuring claw (207) are respectively clamped on the left side surface and the right side surface of the contact rail (105), and the upper end surface of the main connecting scale (206) is tightly attached to the bottom surface of the contact rail (105).
6. The measuring scale for geometric parameters of touch rail based on vernier accuracy as claimed in claim 1, wherein said measuring scale fixture (216) comprises a fixture body (303), a near-touch rail side fixing wall (304) and a far-touch rail side fixing wall (305) respectively fixed vertically at left and right ends of the fixture body (303), a second rail fastening member (307) installed inside the far-touch rail side fixing wall (305), and a first rail fastening member (306) installed inside the near-touch rail side fixing wall (304).
7. The geometric parameter measurement scale for touch rails based on vernier accuracy as claimed in claim 6, wherein the first rail fastening member (306) is connected to the rotary fastening handle (308) through the first fastening member connecting rod (301), and during measurement, the first rail fastening member (306) and the second rail fastening member (307) clamp the left and right sides of the near-touch rail side rail (108) by screwing the rotary fastening handle (308).
8. The measuring ruler for geometric parameters of contact rails based on vernier accuracy as claimed in claim 6, wherein said fixture body (303) is rotatably adjustable at its left end by means of a rotary connecting member (217) and connected to the right end of the measuring ruler fixing arm (212).
9. The ruler of claim 8, wherein said rotary connecting member (217) has a vertical calibration line (218) to realize the main ruler (205) being perpendicular to the horizontal plane.
10. The contact rail geometric parameter measuring scale based on vernier accuracy as claimed in claim 1, wherein a contact rail shield (104) is arranged on the outer side of the contact rail (105), and the contact rail shield (104) is fixed with the sleeper (103) through a contact rail shield connecting part (101) and a contact rail shield supporting part (102) in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022414114.4U CN213657681U (en) | 2020-10-27 | 2020-10-27 | Contact rail geometric parameter measuring scale based on vernier precision |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022414114.4U CN213657681U (en) | 2020-10-27 | 2020-10-27 | Contact rail geometric parameter measuring scale based on vernier precision |
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| CN213657681U true CN213657681U (en) | 2021-07-09 |
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| CN202022414114.4U Active CN213657681U (en) | 2020-10-27 | 2020-10-27 | Contact rail geometric parameter measuring scale based on vernier precision |
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