Combined measuring device and measuring method for wheel set pressing machine

Abstract

The invention discloses a combined measuring device and measuring method for a wheel set pressing machine, a mandrel is vertically and fixedly arranged outside one side of a guide rail sliding block, the mandrel is rotatably connected with a swing arm, a cantilever rod is arranged at the top end of a telescopic rod, and the cantilever rod is in contact with a measuring head of a jumping displacement sensor; the cantilever rod is arranged between the telescopic reset assembly and the telescopic rod, and the telescopic rod drives the cantilever rod to vertically move; a synchronous arm is fixedly arranged on one side of the swing arm, a connecting rod is fixedly arranged at the bottom of the cantilever rod and is in contact connection with the synchronous arm, and the swing arm is connected with the swing reset assembly through a reset arm; by arranging the single jumping displacement sensor, wheel end face jumping and wheel tread radial jumping can be detected through the swing arm and the telescopic rod, the overall size is small, the structure is simple, the device can be arranged corresponding to a wheel pair press-fitting machine, real-time measurement in the press-fitting process is achieved, the production efficiency is greatly improved, and the production cost is reduced. And the detection cost is effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of wheel detection, and in particular to a combined measuring device and a measuring method for a wheelset press. Background Art

[0002] In the rail transit industry, the press-fit position and dimensions of rail vehicle wheels relative to the axle are very important. Therefore, during the wheel press-fitting process, the wheelset press must perform real-time measurements of the wheelset's inside distance, wheel end face runout, and wheel tread radial runout to ensure that the final wheelset meets high-precision requirements.

[0003] In the existing press-fitting process, various parameters are usually estimated only through visual inspection or universal rulers, which cannot guarantee the measurement accuracy requirements. After the press-fitting is completed, the comprehensive data of the wheelset must be measured through a comprehensive measuring device. Since the existing comprehensive measuring devices are generally large in size, the wheelset needs to be transported between equipment after the press-fitting is completed. If the measurement data is not good, it needs to be transported again for correction. Real-time measurement cannot be achieved during the press-fitting process, which greatly increases production costs and affects the production efficiency of the wheelset.

[0004] In view of the above-mentioned defects, the inventors of the present invention finally obtained the present invention after a long period of research and practice. Summary of the Invention

[0005] In order to solve the above technical defects, the technical solution adopted by the present invention is to provide a combined measuring device for a wheelset press, including a guide rail slider, a telescopic rod, a telescopic guide sleeve, a swing arm, a core shaft, a telescopic reset assembly, a swing reset assembly, a runout displacement sensor and a linear guide rail, wherein the telescopic reset assembly, the swing reset assembly and the runout displacement sensor are fixedly arranged on the guide rail slider, the telescopic guide sleeve is fixedly arranged on the guide rail slider, the telescopic rod is vertically arranged in the telescopic guide sleeve, the core shaft is vertically fixedly provided on the outside of one side of the guide rail slider, and the core shaft is rotatably connected to the swing arm. A cantilever rod is provided at the top of the telescopic rod, and the cantilever rod is in contact with the probe of the beating displacement sensor. The cantilever rod is provided between the telescopic reset assembly and the telescopic rod, and the telescopic rod drives the cantilever rod to move vertically; a synchronization arm is fixedly provided on one side of the swing arm, and a connecting rod is fixedly provided at the bottom of the cantilever rod, and the connecting rod is in contact with the synchronization arm, and the swing arm is connected to the swing reset assembly through the reset arm; the guide rail slider is slidably connected to the linear guide rail and can move horizontally and linearly along the linear guide rail, and a linear displacement sensor is fixedly provided on the guide rail slider.

[0006] Preferably, the bottom height of the telescopic rod is lower than the bottom height of the swing arm.

[0007] Preferably, the reset arm and the swing head are arranged at two ends of the swing arm respectively, and the swing reset assembly and the synchronous arm are arranged at the same side of the swing arm respectively.

[0008] Preferably, the swing head is arranged in a spherical or disc shape, and the diameter of the swing head is greater than the maximum cross-sectional diameter of the telescopic rod.

[0009] Preferably, a contact pin is arranged vertically on the synchronous arm, and a hemispherical surface is arranged on the upper end surface of the contact pin, and the synchronous arm is connected with the connecting rod through the contact pin.

[0010] Preferably, the telescopic reset assembly comprises a telescopic reset spring arranged vertically, one end of the telescopic reset spring is connected with the connecting frame, and the other end is connected with the top end of the telescopic rod; the swing reset assembly comprises a swing reset spring arranged horizontally, one end of the swing reset spring is connected with the connecting frame, and the other end is connected with the top end of the swing arm.

[0011] Preferably, a measuring method for a wheel set press-fitting machine adopts the combined measuring device for a wheel set press-fitting machine; the linear guide rail is arranged in parallel with the axle of the wheel set; the swing head is arranged between the two wheels of the wheel set, the inner side distance of the wheel set is measured by the linear displacement sensor, the jump displacement sensor and the swing arm, the end face jump of the wheel is measured by the jump displacement sensor and the swing arm, and the radial jump of the wheel tread is measured by the jump displacement sensor and the telescopic rod.

[0012] Preferably, the inner side distance of the wheel set is measured by the combined measuring device for a wheel set press-fitting machine, which comprises:

[0013] The guide rail slider moves along the linear guide rail to one side of the wheel until the swing head contacts the wheel to swing, the first side linear data s1 measured by the linear displacement sensor and the first side jump data m1 measured by the jump displacement sensor are recorded, and then the guide rail slider moves along the linear guide rail to the other side of the wheel until the swing head contacts the other side of the wheel to swing, the second side linear data s2 measured by the linear displacement sensor and the second side jump data m2 measured by the jump displacement sensor are recorded.

[0014] The calculation formula of the inner side distance L of the wheel set is L=(s2-s1)-(m2-m1)x(L1 / L2)+F.

[0015] Wherein, L1 is the length dimension between the swing head and the mandrel axis, L2 is the length dimension between the contact point of the synchronous arm and the connecting rod and the mandrel axis, and F is the diameter dimension of the swing head.

[0016] Preferably, the wheel end face runout measurement is performed by the combined measuring device for the wheelset press machine, including:

[0017] Move the guide rail slider until the swing head contacts the inner end surface of the wheel to be tested and swings, the wheel rotates at least one circle around the axle, and the swing head slightly bounces against the inner end surface of the wheel. During the rotation of the wheel, record the maximum value measured by the bounce displacement sensor as the first end surface runout data m31, and the minimum value measured by the bounce displacement sensor as the second end surface runout data m32;

[0018] The calculation formula of the wheel end face runout T is: T1=(m31-m32)x(L1 / L2);

[0019] Among them, L1 is the length dimension between the swing head and the axis of the core shaft; L2 is the length dimension between the contact point between the synchronization arm and the connecting rod and the axis of the core shaft.

[0020] Preferably, the wheel tread radial runout measurement is performed by the combined measuring device for the wheelset press, including:

[0021] Move the guide rail slider to move the telescopic rod above the wheel on the side to be tested, so that the axis of the telescopic rod intersects perpendicularly with the axis of the axle, and bring the bottom of the telescopic rod into contact with the tread of the wheel. The wheel rotates at least one circle around the axle, and the telescopic rod slightly bounces against the tread of the wheel. During the rotation of the wheel, the maximum value measured by the bounce displacement sensor is recorded as the first tread bounce data m41, and the minimum value measured by the bounce displacement sensor is recorded as the second tread bounce data m42;

[0022] The calculation formula for the wheel tread radial runout T2 is: T2=m41-m42.

[0023] Compared with the prior art, the beneficial effect of the present invention is that: by setting a single said vibration displacement sensor, the present invention can detect the wheel end face vibration and the wheel tread radial vibration respectively through the swing arm and the telescopic rod. The overall size is small and the structure is simple. It can be set corresponding to the wheelset press machine to realize real-time measurement during the pressing process, greatly improving production efficiency and effectively reducing detection costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A view of the connection structure of the combined measuring device for the wheelset press;

[0025] Figure 2 A three-dimensional structural view of the combined measuring device for the wheelset press;

[0026] Figure 3 A measurement schematic diagram of the combined measuring device for a wheelset press machine;

[0027] Figure 4 Schematic diagram of the measurement of the inner distance and the wheel end face runout;

[0028] Figure 5 Schematic diagram of the wheel tread radial runout measurement.

[0029] The numbers in the figure represent:

[0030] 1-guide rail slider; 2-telescopic rod; 3-telescopic guide sleeve; 4-swing arm; 5-core shaft; 6-telescopic reset assembly; 7-swing reset assembly; 8-jump displacement sensor; 9-cantilever rod; 10-synchronizing arm; 11-connecting rod; 12-reset arm; 13-swing head; 14-probe; 15-contact pin; 16-center hole; 17-connecting frame; 18-linear guide; 19-linear displacement sensor; 20-axle; 21-wheel. DETAILED DESCRIPTION

[0031] The above and other technical features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.

[0032] Example 1

[0033] like Figure 1 and Figure 2 As shown, Figure 1 A view of the connection structure of the combined measuring device for the wheelset press (excluding the connecting frame); Figure 2 This is a three-dimensional structural view of the combined measuring device for the wheelset press.

[0034] The combined measuring device for a wheelset press according to the present invention comprises a guide rail slider 1, a telescopic rod 2, a telescopic guide sleeve 3, a swing arm 4, a core shaft 5, a telescopic reset assembly 6, a swing reset assembly 7 and a beating displacement sensor 8. The telescopic reset assembly 6, the swing reset assembly 7 and the beating displacement sensor 8 are fixedly arranged on the guide rail slider 1, the telescopic reset assembly 6 is arranged corresponding to the telescopic rod 2, the swing reset assembly 7 is arranged corresponding to the swing arm 4, the telescopic guide sleeve 3 is fixedly arranged on the guide rail slider 1, the telescopic rod 2 is vertically arranged in the telescopic guide sleeve 3, the core shaft 5 is vertically fixedly provided on the outside of one side of the guide rail slider 1, the core shaft 5 is rotatably connected to the swing arm 4, a cantilever rod 9 is provided at the top of the telescopic rod 2, and the cantilever rod 9 is connected to the beating displacement sensor The probe 14 of the device 8 is set in contact, and the cantilever rod 9 is set between the telescopic reset assembly 6 and the telescopic rod 2. The telescopic rod 2 drives the cantilever rod 9 to move vertically, and the vertical movement distance of the cantilever rod 9 is measured by the beating displacement sensor 8, so that the telescopic stroke of the telescopic rod 2 can be detected; a synchronization arm 10 is fixedly provided on one side of the swing arm 4, and a connecting rod 11 is fixedly provided at the bottom of the cantilever rod 9, and the connecting rod 11 is contacted and connected to the synchronization arm 10, and the swing arm 4 is connected to the swing reset assembly 7 through the reset arm 12. The swing arm 4 maintains a vertical equilibrium state under the common elastic force of the telescopic reset assembly 6 and the swing reset assembly 7, and the telescopic rod 2 maintains a stable position under the elastic force of the telescopic reset assembly 6 and the limiting action of the telescopic guide sleeve 3.

[0035] Generally, a telescopic hole is vertically provided in the guide rail slider 1, the telescopic guide sleeve 3 is provided corresponding to the telescopic hole, the telescopic rod 2 is provided in the telescopic hole, and the cantilever rod 9 is provided above the guide rail slider 1, thereby facilitating the setting of the telescopic reset assembly 6 and the beating displacement sensor 8.

[0036] Preferably, the swing arm 4 in the initial state is arranged parallel to the telescopic rod 2, and the core shaft 5 is arranged perpendicular to the telescopic rod 2, thereby facilitating the setting of the swing arm 4 so that the swing arm 4 can perform contact measurement on the wheels on both the left and right sides.

[0037] The bottom height of the telescopic rod 2 is lower than the bottom height of the swing arm 4, thereby preventing the swing arm 4 from interfering with the wheel when the bottom of the telescopic rod 2 contacts the wheel tread to measure the radial runout of the wheel tread.

[0038] Specifically, the reset arm 12 and the swing head 13 are respectively arranged at the two ends of the swing arm 4, and the swing reset assembly 7 and the synchronization arm 10 are respectively arranged on the same side of the swing arm 4. When the swing head 13 moves clockwise, the swing reset assembly 7 provides a counterclockwise elastic force to restore the swing arm 4 to a vertical state; when the swing head 13 moves counterclockwise, the synchronization arm 10 drives the connecting rod 11 and the cantilever rod 9 to move vertically upward, and the telescopic reset assembly 6 provides a vertical downward elastic force to restore the swing arm 4 to a vertical state. The reverse elastic force provided by the telescopic reset assembly 6 and the swing reset assembly 7 can keep the swing arm 4 in a stable vertical balance state.

[0039] The swing head 13 is configured to be spherical or disc-shaped, and the diameter of the swing head 13 is larger than the maximum cross-sectional diameter of the telescopic rod 2, thereby preventing the telescopic rod 2 from interfering with the wheel when the side of the swing head 13 contacts the side end of the wheel to measure the wheel end face runout.

[0040] Preferably, a contact pin 15 is vertically provided on the synchronization arm 10, and the upper end surface of the contact pin 15 is provided with a hemispherical shape. The synchronization arm 10 is in contact and connected with the connecting rod 11 through the contact pin 15, and the hemispherical end of the contact pin 15 ensures the conversion of the circular motion of the synchronization arm 10 to the vertical linear movement of the connecting rod 11.

[0041] Preferably, a center hole 16 is provided at the end of the swing arm 4, and the core shaft 5 is arranged in the center hole 16. The swing arm 4, the reset arm 12 and the synchronization arm 10 are all radially extended with the center hole 16 as the center to ensure that each arm is subjected to force so that the swing arm 4 can rotate stably clockwise or counterclockwise around the core shaft 5.

[0042] Generally, a connecting frame 17 is fixedly provided on the guide rail slider 1 , and the telescopic reset assembly 6 and the swing reset assembly 7 are fixedly provided on the guide rail slider 1 via the connecting frame 17 .

[0043] Specifically, the telescopic reset assembly 6 includes a telescopic reset spring, which is vertically arranged, and one end of the telescopic reset spring is connected to the connecting frame 17, and the other end is connected to the top of the telescopic rod 2, so as to ensure the telescopic reset effect of the telescopic rod 2 through the telescopic reset spring; the swing reset assembly 7 includes a swing reset spring, which is horizontally arranged, and one end of the swing reset spring is connected to the connecting frame 17, and the other end is connected to the top of the swing arm 4, so as to ensure the swing reset effect of the swing arm 4 through the swing reset spring.

[0044] Preferably, the combined measuring device for wheel set press fitting machine further comprises a linear guide rail 18, the guide rail slider 1 is slidably connected to the linear guide rail 18 and can move horizontally and linearly along the linear guide rail 18, and a linear displacement sensor 19 is fixedly arranged on the guide rail slider 1, the moving distance of the guide rail slider 1 on the linear guide rail 18 is detected by the linear displacement sensor 19, so as to detect the inner side distance of the wheel set.

[0045] The present application can detect the wheel end face runout and the wheel tread radial runout through the swing arm 4 and the telescopic rod 2 respectively by arranging a single runout displacement sensor 8, has small overall volume, simple structure, can be arranged on the wheel set press fitting machine, realizes real-time measurement in the press fitting process, greatly improves the production efficiency, and effectively reduces the detection cost.

[0046] Embodiment two

[0047] Specifically, the linear guide rail 18 is stationary, the guide rail slider 1 and the linear guide rail 18 form a linear motion pair, and the guide rail slider 1 moves linearly relative to the linear guide rail 18, and the linear displacement sensor 19 outputs the displacement data of the guide rail slider 1. When there is no external force, the swing reset spring acts on the swing arm 4 to keep it stationary at a certain position, and when there is an external force, the swing reset spring is deformed under stress, the swing arm 4 swings, and the swing arm 4 returns to the initial position when the external force is removed. The telescopic rod 2 is parallel to the stationary swing arm 4 and can move linearly, one end of the telescopic reset spring is in contact with one end of the telescopic rod 2, the telescopic rod 2 is kept stationary at a certain position under the action of the telescopic reset spring when there is no external force, the telescopic reset spring is deformed under stress when there is an external force, the telescopic rod 2 moves towards the spring, and the telescopic rod 2 returns to the initial position under the action of the telescopic reset spring when the external force is removed.

[0048] The measuring head 14 arranged on the runout displacement sensor 8 can move linearly, is fixed and stationary, and the displacement of the measuring head 14 is the output value of the runout displacement sensor 8. The cantilever rod 9 extends transversely from the telescopic rod 2, the measuring head 14 of the runout displacement sensor 8 is in contact with the cantilever rod 9 and can stretch and contract together with the cantilever rod 9 to measure the vertical displacement of the telescopic rod 2. One side of the cantilever rod 9 extends the connecting rod 11, the synchronous arm 10 on the swing arm 4 is in contact with the connecting rod 11, when the synchronous arm 10 swings, it pushes the connecting rod 11, and the connecting rod 11, the cantilever rod 9 and the measuring head 14 move linearly together to measure the swing amplitude of the synchronous arm 10. The synchronous arm 10 is at different distances from the center of the spindle 5, and the swing amplitude of the swing head 13 is measured by conversion.

[0049] As Figure 3 shown, Figure 3 is a measurement schematic diagram of the combined measuring device for the wheel set press-fitting machine; the length dimension between the contact point of the synchronous arm 10 and the connecting rod 11 and the axis of the mandrel 5 is L2, and the length dimension between the swing head 13 and the axis of the mandrel 5 is L1. When the swing head 13 receives an external force to generate a transverse displacement D1, the swing arm 4 generates an angle α, that is, according to the trigonometric function relationship D1=sinα*L1.

[0050] The synchronous arm 10 generates a longitudinal displacement D2 with the contact point of the connecting rod 11 along with the swing angle α of the swing arm 4, that is, according to the trigonometric function relationship D2=L2*sinα, so it can be known that D2 is the measurement value of the run-out displacement sensor 8. Therefore, the measurement horizontal displacement value D1 of the swing head 13 is D2*(L1 / L2).

[0051] Example Three

[0052] The measuring method for the wheel set press-fitting machine adopts the combined measuring device for the wheel set press-fitting machine; the linear guide rail 18 is arranged in parallel with the axle 20 of the wheel set; the swing head 13 is arranged between the two wheels 21 of the wheel set, the inner side distance measurement of the wheel set is performed through the linear displacement sensor 19, the run-out displacement sensor 8 and the swing arm 4, the wheel 21 end face run-out measurement is performed through the run-out displacement sensor 8 and the swing arm 4, and the wheel 21 tread radial run-out measurement is performed through the run-out displacement sensor 8 and the telescopic rod 2.

[0053] Specifically, in the embodiment, as Figure 4 shown, Figure 4 is a measurement schematic diagram of the inner side distance measurement and the wheel 21 end face run-out measurement; the inner side distance measurement of the wheel set is performed through the combined measuring device for the wheel set press-fitting machine, and specifically includes:

[0054] The guide rail slider 1 moves along the linear guide rail 18 to one side of the wheel 21 until the swing head 13 contacts the wheel 21 to swing, the first side linear data s1 measured by the linear displacement sensor 19 and the first side run-out data m1 measured by the run-out displacement sensor 8 are recorded, and then the guide rail slider moves along the linear guide rail 18 to the other side of the wheel 21 until the swing head 13 contacts the other side of the wheel 21 to swing, the second side linear data s2 measured by the linear displacement sensor 19 and the second side run-out data m2 measured by the run-out displacement sensor 8 are recorded.

[0055] At this time, the displacement change amount of the linear displacement sensor 19 is s2-s1;

[0056] The displacement change of the swing head 13 is (m2-m1)x(L1 / L2);

[0057] The diameter of the swing head 13 is φF;

[0058] The calculation formula of the wheelset inner distance L is: L=(s2-s1)-(m2-m1)x(L1 / L2)+F.

[0059] Example 4

[0060] In this embodiment, the wheel 21 end face runout measurement is performed using the combined measuring device for the wheelset press, specifically including:

[0061] Move the guide rail slider 1 until the swing head 13 contacts the inner end face of the wheel 21 of the wheel 21 on the side to be tested and swings, and the wheel 21 rotates around the axle 20 for at least one circle, and the swing head 13 bounces slightly against the inner end side of the wheel 21. During the rotation of the wheel 21, the maximum value measured by the bounce displacement sensor 8 is recorded as the first end face bounce data m31, and the minimum value measured by the bounce displacement sensor 8 is recorded as the second end face bounce data m32.

[0062] The calculation formula of the end face runout T of the wheel 21 is: T1 = (m31-m32) x (L1 / L2).

[0063] Example 5

[0064] In this embodiment, if Figure 5 As shown, Figure 5 Schematic diagram of the measurement of the radial runout of the tread of the wheel 21; the radial runout of the tread of the wheel 21 is measured by the combined measuring device for the wheelset press, specifically including:

[0065] Move the guide rail slider 1 and move the telescopic rod 2 above the wheel 21 on the side to be tested. The axis of the telescopic rod 2 intersects perpendicularly with the axis of the axle 20. The bottom of the telescopic rod 2 is brought into contact with the tread of the wheel 21. The wheel 21 rotates at least one circle around the axle 20. The telescopic rod 2 bounces slightly against the tread of the wheel 21. During the rotation of the wheel 21, the maximum value measured by the bounce displacement sensor 8 is recorded as the first tread bounce data m41, and the minimum value measured by the bounce displacement sensor 8 is recorded as the second tread bounce data m42.

[0066] The calculation formula for the radial runout T2 of the tread of the wheel 21 is: T2=m41-m42.

[0067] The above description is merely a preferred embodiment of the present invention and is intended to be illustrative rather than restrictive of the present invention. Those skilled in the art will appreciate that many changes, modifications, and even equivalents may be made to the present invention within the spirit and scope of the claims, all of which fall within the scope of protection of the present invention.

Claims

1. A combined measuring device for a wheelset press, characterized in that: The camshaft is fixedly mounted on the guide rail, and the camshaft is connected to the guide rail via a pin. The camshaft is connected to the guide rail via a pin connection. The camshaft is connected to the guide rail via a pin connection.

2. The combined measuring device for a wheelset press according to claim 1, characterized in that: The bottom height of the telescopic rod is lower than the bottom height of the swing arm.

3. The combined measuring device for a wheelset press according to claim 1, characterized in that: The reset arm and the swing head are respectively arranged at two ends of the swing arm, and the swing reset assembly and the synchronization arm are respectively arranged on the same side of the swing arm.

4. The combined measuring device for a wheelset press according to claim 3, characterized in that: The swing head is configured to be spherical or disc-shaped, and the diameter of the swing head is larger than the maximum cross-sectional diameter of the telescopic rod.

5. The combined measuring device for a wheelset press according to claim 4, characterized in that: A contact pin is vertically provided on the synchronization arm, and an upper end surface of the contact pin is provided with a hemispherical shape. The synchronization arm is in contact with and connected to the connecting rod through the contact pin.

6. The combined measuring device for a wheelset press according to claim 5, characterized in that: The telescopic reset assembly includes a telescopic reset spring, which is vertically arranged, and one end of the telescopic reset spring is connected to the connecting frame, and the other end is connected to the top of the telescopic rod; the swing reset assembly includes a swing reset spring, which is horizontally arranged, and one end of the swing reset spring is connected to the connecting frame, and the other end is connected to the top of the swing arm.

7. A measuring method for a wheelset press, characterized in that: The combined measuring device for a wheelset press according to claim 6; the linear guide rail is arranged parallel to the axle of the wheelset; the swing head is arranged between the two wheels of the wheelset, the wheelset inner side distance is measured by the linear displacement sensor, the runout displacement sensor and the swing arm, the wheel end face runout is measured by the runout displacement sensor and the swing arm; the wheel tread radial runout is measured by the runout displacement sensor and the telescopic rod.

8. The measuring method for a wheelset press machine according to claim 7, characterized in that: The wheelset inner distance is measured by the combined measuring device for the wheelset press, comprising: The guide rail slider moves along the linear guide rail toward the wheel on one side until the swing head contacts the wheel and swings, and the first side linear data s1 measured by the linear displacement sensor and the first side runout data m1 measured by the runout displacement sensor are recorded; then the guide rail slider moves along the linear guide rail toward the wheel on the other side until the swing head contacts the wheel on the other side and swings, and the second side linear data s2 measured by the linear displacement sensor and the second side runout data m2 measured by the runout displacement sensor are recorded; The calculation formula of the inner distance L of the wheelset is: L=(s2-s1)-(m2-m1)x(L1 / L2)+F; Among them, L1 is the length dimension between the swing head and the axis of the core shaft; L2 is the length dimension between the contact point between the synchronization arm and the connecting rod and the axis of the core shaft; F is the diameter dimension of the swing head.

9. The measuring method for a wheelset press machine according to claim 7, characterized in that: The wheel end face runout measurement is performed by using the combined measuring device for the wheelset press machine, comprising: Move the guide rail slider until the swing head contacts the inner end surface of the wheel to be tested and swings, the wheel rotates at least one circle around the axle, and the swing head slightly bounces against the inner end surface of the wheel. During the rotation of the wheel, record the maximum value measured by the bounce displacement sensor as the first end surface runout data m31, and the minimum value measured by the bounce displacement sensor as the second end surface runout data m32; The calculation formula of the wheel end face runout T is: T1=(m31-m32)x(L1 / L2); Among them, L1 is the length dimension between the swing head and the axis of the core shaft; L2 is the length dimension between the contact point between the synchronization arm and the connecting rod and the axis of the core shaft.

10. The measuring method for a wheelset press machine according to claim 7, characterized in that: The wheel tread radial runout is measured by the combined measuring device for a wheelset press, comprising: Move the guide rail slider to move the telescopic rod above the wheel on the side to be tested, so that the axis of the telescopic rod intersects perpendicularly with the axis of the axle, and bring the bottom of the telescopic rod into contact with the tread of the wheel. The wheel rotates at least one circle around the axle, and the telescopic rod slightly bounces against the tread of the wheel. During the rotation of the wheel, the maximum value measured by the bounce displacement sensor is recorded as the first tread bounce data m41, and the minimum value measured by the bounce displacement sensor is recorded as the second tread bounce data m42; The calculation formula for the wheel tread radial runout T2 is: T2=m41-m42.

Images