Rolling stock wheel diameter measuring instrument

Abstract

The invention relates to the technical field of rolling stock wheel diameter measurement, in particular to a rolling stock wheel diameter measuring instrument which is characterized in that a display panel used for displaying a measurement result is arranged on a connecting disc, an operating rod is fixedly connected to the top end of the connecting disc, a connecting rod is fixedly connected to the bottom end of the connecting disc, and an outer rod is fixedly connected to the bottom end of the connecting rod; an outer rod is fixedly connected to the bottom end of the connecting disc, a sliding block is slidably connected to the inner side of the outer rod, an inner rod is fixedly connected to the bottom end of the sliding block, two side rods are fixedly connected to the bottom end of the connecting disc, and the two side rods are symmetrically arranged on the two sides of the connecting rod. The diameter of the outer edge of the wheel is accurately obtained by obtaining the coordinate points of the three discs, the structural design is simple and small, measurement can be carried out in any direction, the measurement operation can be achieved only through abutting action, and the detection steps are greatly optimized while the measurement accuracy is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of locomotive wheel diameter measurement, in particular to a locomotive wheel diameter measuring instrument. BACKGROUND

[0002] The stable operation of the railway vehicle body is the prerequisite and guarantee for the speed-up of the railway vehicle, and whether the size of the railway vehicle wheel meets the high-precision requirement is crucial. The existing measurement of the rolling circle diameter of the railway vehicle wheel is generally measured by using a wheel diameter ruler;

[0003] The existing wheel diameter measurement of the locomotive vehicle using the wheel diameter ruler has the following disadvantages: sometimes the wheels are arranged in a continuous row on the production line track, and it is very difficult to measure the wheel diameter with a diameter measuring tool. Due to the very small measurement space, the conventional measuring tool cannot be lowered, the operation is very troublesome, the measurement efficiency is too low, the measurement accuracy is difficult to guarantee, and the quality of the locomotive wheel cannot be guaranteed.

[0004] We regard the outer edge of the vehicle wheel as a circle, and establish a coordinate system for the outer edge circle of the vehicle wheel. After obtaining three points of the outer edge circle in the coordinate system, the radius r of the outer edge circle can be obtained through the standard equation of the circle (x-v)²+(y-w)²=r², (v, w) being the center coordinates, so that the wheel diameter of the vehicle wheel can be simply and accurately obtained.

[0005] Therefore, a locomotive vehicle wheel diameter measuring instrument is proposed to solve the above problems. SUMMARY

[0006] The present application aims to provide a locomotive vehicle wheel diameter measuring instrument to solve the problem of "it is very difficult to measure the wheel diameter with a diameter measuring tool, the conventional measuring tool cannot be lowered due to the very small measurement space, the operation is very troublesome, the measurement efficiency is too low, the measurement accuracy is difficult to guarantee, and the quality of the locomotive wheel cannot be guaranteed" in the background art.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0008] A locomotive vehicle wheel diameter measuring instrument, comprising a connecting disc with a processor built-in, a display panel for displaying measurement results is arranged on the connecting disc, the top end of the connecting disc is fixedly connected with an operating rod, the bottom end of the connecting disc is fixedly connected with a connecting rod, the bottom end of the connecting rod is fixedly connected with an outer rod, the inner side of the outer rod is slidably connected with a sliding block, the bottom end of the sliding block is fixedly connected with an inner rod, the bottom end of the connecting disc is fixedly connected with two side rods, the two side rods are symmetrically arranged on the two sides of the connecting rod, and the bottom end of the side rod and the bottom end of the inner rod are both fixedly connected with a disc;

[0009] Three discs are in the same plane, and the extension lines of the two side rods and the connecting rod converge at the top point h.

[0010] In the above arrangement, the side rod is fixedly arranged, and the three discs can abut against the surface of the outer edge of the wheel through the telescopic inner rod, and the diameter of the outer edge of the wheel is accurately obtained by obtaining the coordinate points of the three discs. This structure is simple and small, can be measured from any direction, and the operation of measurement only needs to be abutted to achieve, while ensuring the accuracy of measurement, greatly optimizing the detection steps. The calculation in the application is calculated by the processor built-in the connecting disc, and the measurement result is displayed on the display panel. For the prior art, no further elaboration is made here.

[0011] As a locomotive and rolling stock wheel diameter measuring instrument, the inner side of the outer rod is fixedly connected with a potentiometer, the middle position of the sliding block is fixedly connected with a connecting block, the connecting block is slidingly connected with the surface of the potentiometer, the specific position of the connecting block in the outer rod is obtained through the potentiometer, so that the distance z from the h point to the center g of the middle position disc is obtained. The potentiometer can obtain the specific position of the connecting block in the outer rod, so as to obtain the length of the distance z.

[0012] As a locomotive and rolling stock wheel diameter measuring instrument, the inner side of the outer rod is provided with a spring, and the two ends of the spring are fixedly connected with the top end of the sliding block and the inner side of the top end of the outer rod respectively. The spring is used for abutting, so that the middle disc can automatically abut against the outer side of the wheel.

[0013] A locomotive and rolling stock wheel diameter measuring method, the steps of which are as follows:

[0014] Step 1: hold the operating rod, so that the two discs on the side rod abut against the wheel, at this time, the extension line of the connecting rod passes through the center of the wheel;

[0015] Step 2: in the process that the two discs on the side rod abut against the wheel, the disc at the bottom end of the inner rod also abuts against the wheel under the action of the spring, at this time, the three discs uniformly contact the outer edge of the wheel, the contact points are e, g and f, and the centers of the three discs form a circle C2 concentric with the wheel;

[0016] Step 3: taking the center g of the disc at the bottom end of the inner rod as the center, a rectangular coordinate system is established, the center of the left disc is e, the line segment b of e point to y axis, the line segment c of h point to e point, and the shortest distance of h point to line segment b is line segment a, so that line segment a, line segment b and line segment c form a right triangle;

[0017] Step 4: Because the angle h is a constant value, the distance of the line segment c is a constant value, the length of the line segment b can be obtained as csinh, then the horizontal coordinate of the e point is -csinh, the length of the line segment a is ccosh, then the vertical coordinate of the e point is -(ccosh-z), the e point coordinate is (-csinh, -(ccosh-z));

[0018] Step 5: the g point coordinate (0, 0), the e point coordinate (-csinh, -(ccosh-z)) and the f point coordinate (csinh, -(ccosh-z)) are substituted into the standard equation of a circle (x-v)²+(y-w)²=r², the radius r2 of the circle C2 can be obtained, the radius r1 of the circle C1 where the wheel rim is located can be obtained by subtracting the radius of the disc from r2, and the radius of the disc is also a constant value.

[0019] The equation is as follows:

[0020] ;

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

[0022] 1、The locomotive vehicle wheel diameter measuring instrument, the side rod is fixedly arranged in the present application, the three discs can be abutted on the surface of the wheel rim through the telescopic inner rod, and the diameter of the wheel rim is accurately obtained by obtaining the coordinate points of the three discs, the structure is simple and small, measurement can be carried out from any direction, and the measurement operation only needs to be abutted to realize, while the measurement accuracy is ensured, the detection steps are greatly optimized, the calculation in the present application is calculated by the processor built-in the connecting disc, and the measurement result is displayed on the display panel.

[0023] 2、The locomotive wheel diameter measuring instrument, hold the operating lever, make the two discs on the side lever abut against the wheel, at this time, the extension line of the connecting rod passes through the center of the wheel, in the process of the two discs on the side lever abutting against the wheel, the disc at the bottom end of the inner rod also abuts against the wheel under the action of the spring, at this time, the three discs are in contact with the outer edge of the wheel, the contact points are e, g and f, the centers of the three discs form a circle C2 concentric with the wheel, establish a rectangular coordinate system with the center g of the disc at the bottom end of the inner rod as the center, the center of the left disc is e, the line segment b of e point to y axis, the line segment c of h point to e point, the shortest distance of h point to line segment b is line segment a, so that line segment a, line segment b and line segment c form a right triangle, because angle h is a fixed value, the distance of line segment c is a fixed value, the length of line segment b is csinh, then the horizontal coordinate of e point is -csinh, the length of line segment a is ccosh, then the vertical coordinate of e point is -(ccosh-z), the coordinates of e point are (-csinh, -(ccosh-z)), the coordinates of g point (0, 0), e point (-csinh, -(ccosh-z)) and f point (csinh, -(ccosh-z)) are substituted into the standard equation of a circle (x-v)2+(y-w)2=r2, the radius r2 of circle C2 can be obtained, the radius r1 of circle C1 where the outer edge of the wheel is located can be obtained by subtracting the radius of the disc from r2, and the radius of the disc is also a fixed value. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the overall appearance structure schematic diagram of the first embodiment of the application;

[0025] Figure 2 It is the mounting structure schematic diagram of the inner part of the outer rod in the first embodiment of the application;

[0026] Figure 3 It is the step schematic diagram when the first embodiment of the application is used;

[0027] Figure 4 It is the measurement schematic diagram of the first embodiment of the application;

[0028] Figure 5 It is the overall appearance structure schematic diagram of the second embodiment of the application;

[0029] Figure 6 It is the step schematic diagram when the second embodiment of the application is used;

[0030] Figure 7 It is the structure schematic diagram of D of the application; Figure 6

[0031] Figure 8 It is the measurement schematic diagram of the second embodiment of the application.

[0032] ​In the figure: 1, operating rod; 2, connecting disc; 3, side rod; 4, connecting rod; 5, outer rod; 6, inner rod; 7, disc; 8, potentiometer; 9, spring; 10, sliding block; 11, connecting block; 12, display panel; 13, stretchable telescopic rod; 14, angle sensor; 15, wheel. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0034] Embodiment 1, please refer to Figures 1-4 The present application provides a technical solution:

[0035] A locomotive wheel diameter measuring instrument, comprising a connecting disc 2 with a processor built-in, a display panel 12 for displaying measurement results is arranged on the connecting disc 2, the top end of the connecting disc 2 is fixedly connected with an operating rod 1, the bottom end of the connecting disc 2 is fixedly connected with a connecting rod 4, the bottom end of the connecting rod 4 is fixedly connected with an outer rod 5, the inner side of the outer rod 5 is slidingly connected with a sliding block 10, the bottom end of the sliding block 10 is fixedly connected with an inner rod 6, the bottom end of the connecting disc 2 is fixedly connected with two side rods 3, the two side rods 3 are symmetrically arranged on the two sides of the connecting rod 4, and the bottom end of the side rod 3 and the bottom end of the inner rod 6 are both fixedly connected with a disc 7.

[0036] The three discs 7 are in the same plane, and the extension lines of the two side rods 3 and the connecting rod 4 converge at the top to a point h.

[0037] Under the above arrangement, the side rod 3 is fixedly arranged in the present application, the three discs 7 can be abutted against the surface of the outer edge of the wheel 15 through the telescopic inner rod 6, and the diameter of the outer edge of the wheel 15 is accurately obtained by obtaining the coordinate points of the three discs 7, this structure design is simple and small, can be measured from any direction, and the measurement operation only needs to be abutted to realize, while ensuring the measurement accuracy, greatly optimizes the detection steps, the calculation in the present application is calculated by the processor built-in in the connecting disc 2, and the measurement results are displayed by the display panel 12, which is the prior art and will not be described in detail here.

[0038] As the locomotive wheel diameter measuring device, preferably, the inner side of the outer rod 5 is fixedly connected with a potentiometer 8, the middle position of the sliding block 10 is fixedly connected with a connecting block 11, the connecting block 11 is slidingly connected with the surface of the potentiometer 8, the specific position of the connecting block 11 in the outer rod 5 is obtained through the potentiometer 8, so that the distance z of the h point reaching the center g of the middle position disc 7 is obtained, and the specific position of the connecting block 11 in the outer rod 5 is obtained through the set potentiometer 8, so that the length of the distance z is obtained.

[0039] As the locomotive wheel diameter measuring device, preferably, the inner side of the outer rod 5 is provided with a spring 9, the two ends of the spring 9 are fixedly connected with the top end of the sliding block 10 and the inner side of the top end of the outer rod 5 respectively, and the spring 9 is used to abut, so that the middle disc 7 can abut on the outer side of the wheel 15 automatically.

[0040] The embodiment also discloses a locomotive wheel diameter measuring method, and steps of the method are as follows.

[0041] Step 1: hold the operating rod 1, so that the two discs 7 on the side rod 3 abut against the wheel 15, at this time, the extension line of the connecting rod 4 passes through the center of the wheel 15;

[0042] Step 2: in the process that the two discs 7 on the side rod 3 abut against the wheel 15, the disc 7 at the bottom end of the inner rod 6 also abuts against the wheel 15 under the action of the spring 9, at this time, the three discs 7 are in contact with the outer edge of the wheel 15, the contact points are e, g and f, and the centers of the three discs 7 form a circle C2 concentric with the wheel 15;

[0043] Step 3: taking the center g of the disc 7 at the bottom end of the inner rod 6 as the center, a rectangular coordinate system is established, the center of the left disc 7 is e, the line segment b of the e point reaching the y axis, the line segment c of the h point reaching the e point, and the shortest distance of the h point reaching the line segment b is the line segment a, so that the line segment a, the line segment b and the line segment c form a right triangle;

[0044] Step 4: because the angle h is a constant value and the distance of the line segment c is a constant value, the length of the line segment b is csinh, so that the horizontal coordinate of the e point is -csinh, the length of the line segment a is ccosh, and the vertical coordinate of the e point is -(ccosh-z), and the e point coordinate is (-csinh, -(ccosh-z));

[0045] Step 5: the g point coordinate (0, 0), the e point coordinate (-csinh, -(ccosh-z)) and the f point coordinate (csinh, -(ccosh-z)) are substituted into the standard equation of a circle (x-v)²+(y-w)²=r², so that the radius r2 of the circle C2 is obtained, the radius r1 of the circle C1 where the outer edge of the wheel 15 is located is obtained by subtracting the radius of the disc 7 from r2, and the radius of the disc 7 is also a constant value.

[0046] The equation is as follows:

[0047] ;

[0048] Embodiment 2, this embodiment is an alternative to embodiment 1, please refer to Figures 5-8 , the same parts in this embodiment as embodiment 1 will not be repeated, the difference is that;

[0049] A locomotive wheel diameter measuring instrument, comprising a connecting disc 2 with a processor built-in, a display panel 12 for displaying measurement results is arranged on the connecting disc 2, the top end of the connecting disc 2 is fixedly connected with an operating rod 1, the bottom end of the connecting disc 2 is fixedly connected with an inner rod 6, the bottom end of the connecting disc 2 is rotatably connected with two side rods 3 symmetrical to the inner rod 6 through a hinge, the bottom end of the side rod 3 and the bottom end of the inner rod 6 are rotatably connected with a disc 7, the two ends of a stretchable rod 13 are fixedly connected with the side rod 3 and the inner rod 6 respectively, and the three discs 7 are in the same plane.

[0050] Under the above arrangement, the side rod 3 is movably arranged in the present application, the movable side rod 3 enables the three discs 7 to abut against the surface of the outer edge of the wheel 15, and the coordinates of the three discs 7 are obtained to accurately obtain the diameter of the outer edge of the wheel 15, the structure is simple and compact, can be measured from any direction, and the measurement operation can be realized only by abutting action, while ensuring the measurement accuracy, the detection steps are greatly optimized, the calculation in the present application is calculated by the processor built-in in the connecting disc 2, and the measurement results are displayed through the display panel 12, which is the prior art and will not be described in detail here;

[0051] As a preferred locomotive wheel diameter measuring instrument of the present application, the stretchable rod 13 is arranged between the side rod 3 and the inner rod 6. The stretchable rod 13 is used to abut against the outer side of the wheel 15 to enable the middle disc 7 to automatically abut against the outer side of the wheel 15.

[0052] As a preferred locomotive wheel diameter measuring instrument of the present application, an angle sensor 14 is arranged between the side rod 3 and the connecting disc 2 to obtain the inclination angle of the side rod 3.

[0053] A locomotive wheel diameter measuring method, the steps of which are:

[0054] Step 1: hold the operating rod 1, and make the disc 7 at the bottom end of the inner rod 6 abut against the wheel 15;

[0055] Step 2: in the process that the disc 7 on the inner rod 6 abuts against the wheel 15, the disc 7 at the bottom end of the side rod 3 will also abut against the wheel 15 under the action of the stretchable rod 13, at this time, the three discs 7 uniformly contact the outer edge of the wheel 15, the contact points are e, g and f, and the centers of the three discs 7 form a circle C2 concentric with the wheel 15.

[0056] Step 3: Establish a rectangular coordinate system with the center g of the disc 7 at the bottom end of the inner rod 6 as the origin, the center of the disc 7 on the left side as e, the distance from the point e to the y-axis as L1+L2, the top point of the side rod 3 on the left side as k, the line segment between e and k as c, the shortest distance from the point k to the line on which L1 and L2 lie as a, and thus the line segment a, the line segment L1 and the line segment c form a right triangle;

[0057] Step 4: Since the angle k can be obtained by the angle sensor 14, the length of the line segment c and the length of the inner rod 6 are constant, and the distance of the inner rod 6 is m, the length of the line segment L1 can be obtained as csink, and thus the horizontal coordinate of the point e is - (csinh+L2), the length of the line segment a is ccosk, and thus the vertical coordinate of the point e is - (ccosh-m), and the coordinates of the point e are (- (csinh+L2), - (ccosh-m));

[0058] Step 5: Substitute the coordinates of the point g (0, 0), the coordinates of the point e (- (csinh+L2), - (ccosh-m)) and the coordinates of the point f ((csinh+L2), - (ccosh-m)) into the standard equation of a circle (x-v)2+(y-w)2=r2, the radius r2 of the circle C2 can be obtained, and the radius r1 of the circle C1 on which the outer edge of the wheel 15 lies can be obtained by subtracting the radius of the disc 7 from r2, and the radius of the disc 7 is also constant.

[0059] The equation is as follows:

[0060] ;

[0061] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A rolling stock wheel diameter measuring device comprising a connection plate (2) with a built-in processor, on which a display panel (12) is arranged for displaying the measurement result, characterized in that: The top end of the connecting disc (2) is fixedly connected with an operating rod (1), the bottom end of the connecting disc (2) is fixedly connected with a connecting rod (4), the bottom end of the connecting rod (4) is fixedly connected with an outer rod (5), the inner side of the outer rod (5) is slidably connected with a sliding block (10), the bottom end of the sliding block (10) is fixedly connected with an inner rod (6), the bottom end of the connecting disc (2) is fixedly connected with two side rods (3), the two side rods (3) are symmetrically arranged on the two sides of the connecting rod (4), and the bottom end of the side rod (3) and the bottom end of the inner rod (6) are both fixedly connected with a disc (7). Three discs (7) are in the same plane, and the extension lines of the two side rods (3) and the connecting rod (4) converge at the top h point.

2. A wheel diameter measuring device for a rolling stock vehicle according to claim 1, characterized in that: The inner side of the outer rod (5) is fixedly connected with a potentiometer (8), the middle position of the sliding block (10) is fixedly connected with a connecting block (11), the connecting block (11) is slidably connected with the surface of the potentiometer (8), the specific position of the connecting block (11) in the outer rod (5) is obtained through the potentiometer (8), and then the distance z from the h point to the center g of the middle position disc (7) is obtained.

3. A wheel diameter gauge for a rolling stock vehicle according to claim 2, characterized in that: The inner side of the outer rod (5) is provided with a spring (9), and the two ends of the spring (9) are respectively fixedly connected with the top end of the sliding block (10) and the inner side of the top end of the outer rod (5).

4. A method of measuring the wheel diameter of a rolling stock using the rolling stock wheel diameter measuring apparatus according to claim 3, characterized by, The steps are as follows: Step 1: hold the operating rod (1), and make the two discs (7) on the side rod (3) abut against the wheel (15), at this time, the extension line of the connecting rod (4) passes through the center of the wheel (15); Step 2: in the process that the two discs (7) on the side rod (3) abut against the wheel (15), the disc (7) at the bottom end of the inner rod (6) also abuts against the wheel (15) under the action of the spring (9), at this time, the three discs (7) are in contact with the outer edge of the wheel (15) evenly, the contact points are e, g and f, and the centers of the three discs (7) form a circle C2 concentric with the wheel (15); Step 3: taking the center g of the disc (7) at the bottom end of the inner rod (6) as the center, a rectangular coordinate system is established, the center of the left disc (7) is e, the line segment b from the e point to the y axis, the line segment c from the h point to the e point, and the shortest distance from the h point to the line segment b is the line segment a, so that the line segment a, the line segment b and the line segment c form a right triangle; Step 4: because the angle h is a constant value, the distance of the line segment c is a constant value, the length of the line segment b is csinh, so the horizontal coordinate of the e point is -csinh, the length of the line segment a is ccosh, so the vertical coordinate of the e point is -(ccosh-z), and the e point coordinate is (-csinh, -(ccosh-z)); Step 5: the g point coordinate (0, 0), the e point coordinate (-csinh, -(ccosh-z)) and the f point coordinate (csinh, -(ccosh-z)) are substituted into the standard equation of a circle (x-v)²+(y-w)²=r²; ； The radius r2 of the circle C2 can be obtained, the radius r1 of a circle C1 where the outer edge of the wheel (15) is located can be obtained by subtracting the radius of the disc (7) from r2, and the radius of the disc (7) is also a constant value.

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