A bogie sub-frame wheelset radial composition detection device and detection method

Abstract

The present invention discloses a wheel set radial composition detection device and a detection method thereof. The detection device includes a base tire frame and four groups of positioning devices arranged on the tire frame for positioning in combination with a load-bearing saddle, each positioning device includes: a movable intermediate body for fixed connection with the base, a circular arc positioning block supported and fixed on the intermediate body for combining with the arc surface of the load-bearing saddle, at least one end of the circular arc positioning block is provided with a movable head for fixing the end face of the load-bearing saddle, and an adjustment screw on the bottom surface of the movable head. The detection method includes obtaining each coordinate data, inputting the above four load-bearing saddle center coordinate data into a computer, drawing a CAD drawing to simulate the radial composition of the sub-frame wheelset, and obtaining relevant detection parameters. The detection device of the present invention converts large dimensions that cannot be directly measured by means of reference conversion, and converts the inner side distance dimension of the load-bearing saddle into the end face dimension of the inclined wedge by using the data dimension formed by the paired inclined wedge group, so as to determine the center position of the load-bearing saddle.

Description

Technical Field

[0001] The present invention belongs to the technical field of detection equipment design, in particular to the technology of railway vehicle component detection equipment design, and particularly relates to a railway vehicle bogie sub-frame wheelset radial composition detection device and detection method. Background Art

[0002] The radial assembly of the auxiliary frame wheelset is a key component of the bogie. According to the product technical requirements, the wheelset needs to be inspected after radial assembly, with high inspection quality and small allowable error. Figure 1 Middle: The inspection dimensions should meet the requirements of the diagonal difference of the saddle axis center △a=|a1-a2|≤3mm, and the center distance difference of the saddle axis △b=|b1-b2|≤2mm.

[0003] Due to the large radial size of the wheelset of the auxiliary frame bogie, the center of the axis of the load-bearing saddle is a virtual point in space and is not reflected in the real object, so it cannot be directly measured with a vernier caliper. Previously, this type of workpiece has been measured by placing the radial components of the wheelset on a platform for leveling, and then determining the center point and center axis by marking with a steel ruler. This measurement method is complex, time-consuming and labor-intensive, and has low measurement accuracy, making it unsuitable for mass production measurements. Summary of the invention

[0004] In view of the above problems, the present invention discloses a wheelset radial composition detection device and a detection method thereof. By converting the measurement reference, large dimensions and virtual measurement points that cannot be directly measured are converted into measurable small dimensions and physical points. The measured dimensions are simulated and calculated through conversion calculation to obtain the actual dimensions, thereby achieving the purpose of radial composition quality detection of the sub-frame wheelset.

[0005] The present invention is achieved through the following technical solutions:

[0006] A bogie sub-frame wheelset radial composition detection device, wherein the bogie sub-frame wheelset radial composition includes two sub-frames connected by a connecting rod, and each sub-frame end is fixedly connected to a load-bearing saddle, characterized in that: the detection device includes a base tire frame and four groups of positioning devices arranged on the tire frame and used for combining with the load-bearing saddle for positioning;

[0007] The tire frame is a rectangular frame structure with pillars at four corners, and a base is arranged at the top of each pillar, and the center of each base coincides with the design center of each load-bearing saddle radially composed of the bogie sub-frame wheelset; four groups of positioning devices are respectively arranged on the four bases, and each positioning device includes: a movable intermediate body for fixed connection with the base, an arc positioning block supported and fixed on the intermediate body and used to combine with the arc surface of the load-bearing saddle, at least one end of the arc positioning block is provided with a movable head for fixing the end face of the load-bearing saddle, and an adjustment screw on the bottom surface of the movable head.

[0008] The four groups of positioning devices are two sets of full positioning devices, one set of semi-positioning device and one set of movable positioning device; a movable jack is arranged at the outer end of the arc positioning block of the full positioning device, and movable jacks are arranged at both ends of the arc positioning blocks of the semi-positioning device and the movable positioning device; a Y-direction measurement reference plate is arranged on the base outside the arc surface of the arc positioning block of the semi-positioning device, and a Y-direction measurement reference plate is arranged on the base outside the arc surface of the arc positioning block of the movable positioning device, and an X-direction measurement reference plate is arranged on the base of the outer end surface.

[0009] The surface of the base used for setting the full positioning device and the semi-positioning device is provided with a sliding groove of a cross structure, and the bottom surface of the intermediate body is moved or fixed in the sliding groove through a flat key.

[0010] The surface of the base used to set the movable positioning device is provided with a groove, and the step structure provided at the bottom of the intermediate body is fixed in the groove by bolts and a pressing plate.

[0011] An adjusting support device for supporting the radial composition of the bogie auxiliary frame wheelset is arranged in the middle of the tire frame.

[0012] The end face of the arc positioning block is an inclined surface and is provided with a dovetail groove. The end face of one side of the movable head is an inclined surface and a raised dovetail that cooperates with the inclined surface of the arc positioning block. The movable head slides along the inclined surface under the adjustment of the adjusting screw to be wedge-fastened and positioned with an end face on the inner side of the load-bearing saddle.

[0013] The detection method using the above detection device of the present invention comprises the following steps:

[0014] Step 1: hoist the radial component of the secondary frame wheelset into the detection device, make the two outer bearing saddles close to the end surface of one side of the arc positioning block of the full positioning device, adjust the overall movable positioning device to make it fit with the inner saddle surface of the bearing saddle, and rotate and adjust the support device to assist in supporting the middle part of the radial component of the wheelset;

[0015] Step 2: Rotate the adjustment screws of each part to drive the movable head to move and make it wedge tightly on both sides of the U-shaped groove on the saddle surface of the load-bearing saddle, and measure the data L in turn 1 To L 7 , calculate and determine the center coordinates of each load-bearing saddle; and record the radial component serial number of the secondary frame wheelset;

[0016] Among them, L 1 L is the width of the U-shaped groove on the inner saddle surface of the outer left load saddle. 2 is the width of the U-shaped groove on the inner saddle surface of the outer right load saddle, L 3 is the width of the U-shaped groove on the inner saddle surface of the inner left load saddle, L 4 is the Y-direction offset of the inner left load saddle, L 5 is the X-direction offset of the inner right load saddle, L 6 is the width of the U-shaped groove on the inner right load saddle, L 7is the Y-direction offset of the inner right load saddle;

[0017] Step 3: Reversely rotate the adjustment screw to loosen the movable top and lift out the radial component of the secondary frame wheelset;

[0018] Step 4: Draw the center coordinates of the load-bearing saddle into a CAD drawing to simulate the radial composition of the wheelset. Use the CAD measurement tool to measure the diagonals a1 and a2 of the saddle axis center, calculate the diagonal difference △a of the saddle axis center △b = L 5 , and keep good records;

[0019] Step 5: If the detected dimensions meet the requirements of the diagonal difference △a≤3mm between the saddle axis and the center distance difference △b≤2mm between the saddle axis, the radial composition of the sub-frame wheelset with the given serial number is determined to be qualified.

[0020] The full positioning device of the present invention is provided with two groups, which mainly realizes the positioning of the two bearing saddles on the outer side of the radial component of the wheelset and the determination of the virtual center position; it includes an arc positioning block, a movable jack, an adjustment screw, an intermediate body, a flat key, etc. The arc positioning block is used as a reference to position the bearing saddle on the outer side of the radial component of the wheelset, and the movable jack is driven by the adjustment screw to slide along the inclined surface to wedge the bearing saddle tightly, then the center of the end face of the movable jack and the arc positioning block is the virtual center of the bearing saddle on the outer side of the radial component of the wheelset, and the center coordinates thereof can be determined by measuring the spacing between the end faces of the movable jack and the arc positioning block.

[0021] The semi-positioning device of the present invention mainly realizes the positioning and virtual center determination of the left bearing saddle on the inner side of the radial component of the wheelset; it includes an arc positioning block, two movable jacks, an adjustment screw, an intermediate body, a flat key, etc. The two movable jacks are driven by the adjustment screws to slide along the inclined surface, and the center of the end faces of the two movable jacks is the virtual center of the left bearing saddle on the inner side of the radial component of the wheelset. The center coordinates can be determined by measuring the distance between the end face of one of the movable jacks and the measurement reference and the distance between the end faces of the two movable jacks.

[0022] The movable positioning device of the present invention mainly realizes the positioning and virtual center determination of the inner right load-bearing saddle of the radial component of the wheelset; it includes an arc positioning block, two movable jacks, an adjustment screw, an intermediate body, a base, a flat key, etc. The movable positioning device as a whole can move freely along the X and Y directions. By measuring the distance between it and the measurement reference, the overall offset of the inner right load-bearing saddle of the radial component can be determined; by measuring the distance between the end face of one of the movable jacks and the measurement reference and the distance between the end faces of the two movable jacks, the relative offset of the virtual center of the inner right load-bearing saddle of the radial component of the wheelset can be determined.

[0023] The tire frame of the present invention is processed with the installation reference plate of the positioning device, the converted measurement reference, etc., and is provided with adjustment support, hook and other parts. After obtaining the measurement data of each positioning device, the measured center coordinates of each bearing saddle are input into the computer, so that the actual position of the radial component of the wheelset can be simulated and the size difference can be calculated.

[0024] The present invention designs a special detection device for the radial composition of a bogie sub-frame wheelset with a design specification. The detection device sets measurement benchmarks near four load-bearing saddles respectively by means of benchmark conversion, converting large dimensions that cannot be directly measured into small dimensions that can be measured; utilizing the characteristic that paired bevel wedge groups can form different width dimensions, the inconveniently measured inner side distance dimension of the load-bearing saddle is converted into the easily measurable bevel wedge end face dimension, thereby determining the center position of the load-bearing saddle; inputting the measurement data into a computer, simulating the actual position of the radial composition of the wheelset, and calculating the diagonal difference △a and the center distance difference △b of the radial composition of the wheelset. The detection device has the advantages of simple and convenient operation and high detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the radial composition detection of the sub-frame wheelset.

[0026] Figure 2 It is a schematic diagram of the radial composition detection device of the sub-frame wheelset.

[0027] Figure 3 It is a schematic diagram of the front structure and measurement of the full positioning device.

[0028] Figure 4 It is a schematic diagram of the three-dimensional structure of the full positioning device.

[0029] Figure 5 It is a schematic diagram of the front structure and measurement of the semi-positioning device.

[0030] Figure 6 It is a schematic diagram of the three-dimensional structure of the semi-positioning device.

[0031] Figure 7 It is a schematic diagram of the front structure and measurement of the movable positioning device.

[0032] Figure 8 It is a schematic diagram of the side structure and measurement of the movable positioning device.

[0033] Fig. 9 It is a schematic diagram of the three-dimensional structure of the movable positioning device.

[0034] Fig.10 It is a schematic diagram of the tire frame structure;

[0035] Fig.11 It is a schematic diagram of the positioning of the full positioning device and the cross-section of the load-bearing saddle;

[0036] Fig.12 It is a schematic diagram of the longitudinal positioning of the full positioning device and the load-bearing saddle;

[0037] Fig.13 This is a schematic diagram of radial component detection data of the secondary frame wheelset of the embodiment.

[0038] Reference numerals:

[0039] 1 is a full positioning device, 1.1 is a circular arc positioning block, 1.2 is a movable top, 1.3 is an adjusting screw, 1.4 is an intermediate body, and 1.5 is a flat key;

[0040] 2 is a semi-positioning device, 2.1 is a second arc positioning block, 2.2 is a second movable head, 2.3 is a second adjusting screw, 2.4 is a second intermediate body, and 2.5 is a second flat key;

[0041] 3 is a movable positioning device, 3.1 is an arc positioning block 3, 3.2 is a movable top head 3, 3.3 is an adjustment screw 3, 3.4 is an intermediate body 3, 3.5 is a step structure, and 3.6 is a flat key 3;

[0042] 4 is a tire frame, 4.1 is a Y-axis measurement reference plate, 4.2 is an X-axis measurement reference plate, 4.3 is a mounting seat, 4.4 is an adjustment support device, 4.5 is a hook, and 4.6 is a machine base;

[0043] 5 is a load bearing saddle, X is the measurement reference in the X direction, and Y is the measurement reference in the Y direction;

[0044] L 1 L is the width of the U-shaped groove on the inner saddle surface of the outer left load saddle. 2 is the width of the U-shaped groove on the inner saddle surface of the outer right load saddle, L 3 is the width of the U-shaped groove on the inner saddle surface of the inner left load saddle, L 4 is the Y-direction offset of the inner left load saddle, L 5 is the X-direction offset of the inner right load saddle, L 6 is the width of the U-shaped groove on the inner right load saddle, L 7 It is the Y-direction offset of the inner right load-bearing saddle. DETAILED DESCRIPTION

[0045] The present invention is further described below in conjunction with specific implementation methods. The specific implementation methods are further descriptions of the principles of the present invention and do not limit the present invention in any way. Technologies that are the same or similar to the present invention do not exceed the scope of protection of the present invention.

[0046] Combined with the attached pictures.

[0047] The following is an example of the radial composition of a specific sub-frame wheelset, wherein the design parameters of the radial composition of the sub-frame wheelset are as follows: the X-direction distance of the axis of the saddle surface inside the sub-frame bearing saddle is 1800mm, and the Y-direction distance of the center of the U-shaped groove of the saddle surface inside the sub-frame bearing saddle is 1981mm minus half of the U-shaped groove width of 150mm, which is 1906mm.

[0048] like Figure 2 As shown, the radial component detection device of the secondary frame wheelset includes a full positioning device 1, a semi-positioning device 2, a movable positioning device 3, and a tire frame 4.

[0049] like Figure 3 , Figure 4 , Fig.13 As shown, the full positioning device 1 includes an arc positioning block 1.1, a movable top head 1.2, an adjusting screw 1.3, an intermediate body 1.4, and a flat key 1.5, which are used to locate the two load-bearing saddles on the outer side of the radial component of the wheelset and determine the virtual center position. One end face of the arc positioning block 1.1 is processed into an inclined surface and a dovetail groove, and one end face of the movable top head 1.2 is processed into an inclined surface and a raised dovetail. The movable top head 1.2 can be wedged on the inner end face of the load-bearing saddle by sliding along the inclined surface under the action of the adjusting screw 1.3. The outer end face size of the arc positioning block 1.1 and movable top head 1.2 combination is measured and recorded as L 1 (Carrying saddle 1), L 2 (Saddle 2), the center coordinates of the two saddles on the outer side of the wheelset radial component are saddle 1 (0, L 1 / 2), load-bearing saddle 2 (1800, L 2 / 2). The arc positioning block 1.1 and the mounting seat 4.3 are processed with cross grooves for installing flat keys to ensure the relative positions of various components and improve the installation accuracy.

[0050] like Figure 5 , Figure 6 , Fig.13 As shown, the semi-positioning device 2 includes an arc positioning block 2.1, a movable top 2.2, an adjustment screw 2.3, an intermediate body 2.4, and a flat key 2.5, which are used to position the left bearing saddle on the inner side of the radial component of the wheelset and determine the virtual center position. The main difference between the semi-positioning device 2 and the full positioning device 1 is that both sides of the arc positioning block 2.1 are processed into inclined surfaces, and the two movable tops 2.2 slide along the inclined surfaces and are respectively wedged on the two end surfaces on the inner side of the bearing saddle. The distance between the outer sides of the two movable tops 2.2 is measured and recorded as L 3 The distance between the outer end face of the movable plug and the Y-axis measuring reference plate 4.1 is recorded as L 4 , then the center coordinates of the left bearing saddle on the inner side of the wheelset radial component are (0, 1906 + L 4 -L 3 / 2).

[0051] like Figure 7 , Figure 8 , Fig. 9 , Fig.13 As shown, the movable positioning device 3 includes an arc positioning block 3 3.1, an active top 3.2, an adjustment screw 3.3, an intermediate body 3.4, a base 3.5, and a flat key 3.6, which are used to locate the right bearing saddle on the inner side of the radial component of the wheelset and determine the virtual center position. The movable positioning device 3 can move freely in the X and Y directions as a whole on the basis of having the functions of the semi-positioning device 2. The distance between the right end face of the arc positioning block 3 3.1 and the X-direction measurement reference plate 4.2 is recorded as L 5 , then the X coordinate of the inner right bearing saddle is 1800+L 5 ; Measure the distance between the two movable heads 3.2 outside and record it as L 6 The distance between the outer end face of the movable head 3.2 and the Y-axis measurement reference plate 4.1 is recorded as L 7 , then the center coordinate of the right bearing saddle on the inner side of the wheelset radial component is (1800+L 5 , 1906+L 4 -L 3 / 2).

[0052] like Fig.10 As shown, the movable tire frame 4 includes an X-axis measurement reference plate 4.2, a Y-axis measurement reference plate 4.1, four mounting seats 4.3, an adjustment support 4.4, a hook 4.5 and a machine base 4.6. One Y-axis measurement reference plate 4.1 is installed at the inner left (right) load-bearing saddle, and one X-axis measurement reference plate 4.2 is installed at the inner right load-bearing saddle. The four mounting seats 4.3 include two structures, one for installing the movable positioning device 3, which is processed with a rectangular cavity and a cover plate on it; and the other is used to install the full positioning device 1 and the semi-positioning device 2, which are processed with a cross groove and a threaded hole. The adjustment support 4.4 is used for the middle support of the radial component of the wheelset.

[0053] The coordinate data of the four bearing saddle centers are input into the computer and drawn into a CAD drawing to simulate the radial composition of the sub-frame wheelset. The diagonals a1 and a2 of the saddle axis center can be measured using the CAD measurement tool, and the diagonal difference △a of the saddle axis center can be calculated. The difference △b of the saddle axis center distance △b = L 5 .

[0054] Working process of the present invention:

[0055] Step 1: Lift the radial component of the secondary frame wheelset into the detection device, make the two outer bearing saddles close to the end face of one side of the arc positioning block of the full positioning device, adjust the overall movable positioning device to make it fit with the inner saddle surface of the bearing saddle, and rotate and adjust the support to support the middle part of the radial component of the auxiliary support wheelset.

[0056] Step 2: Rotate the adjustment screws of each part to drive the movable head to move and make it wedge tightly on both sides of the U-shaped groove on the saddle surface of the load-bearing saddle, and measure the data L in turn 1 To L 7 , calculate and determine the center coordinates of each bearing saddle. And record the radial component serial number of the sub-frame wheelset.

[0057] Step 3: Reversely rotate the adjusting screw to loosen the movable top and lift out the radial component of the secondary frame wheelset.

[0058] Step 4: Draw the center coordinates of the load-bearing saddle into a CAD drawing to simulate the radial composition of the wheelset. Use the CAD measurement tool to measure the diagonals a1 and a2 of the saddle axis center, calculate the diagonal difference △a of the saddle axis center △b = L 5 , and keep good records.

[0059] Step 5: If the detected dimensions meet the requirements of the diagonal difference △a≤3mm between the saddle axis and the center distance difference △b≤2mm between the saddle axis, the radial composition of the sub-frame wheelset with the given serial number is determined to be qualified.

Claims

1. A bogie sub-frame wheelset radial composition detection device, wherein the bogie sub-frame wheelset radial composition comprises two sub-frames connected by a connecting rod, and each sub-frame end is fixedly connected to a load-bearing saddle, Features: The detection device includes a base tire frame and four sets of positioning devices arranged on the tire frame and used for positioning in combination with the load-bearing saddle; The tire frame is a rectangular frame structure, with pillars arranged at the four corners, and a base arranged at the top of each pillar, and the center of each base coincides with the design center of each load-bearing saddle formed radially by the wheelset of the bogie auxiliary frame; Four sets of positioning devices are respectively arranged on the four bases, and each positioning device comprises: a movable intermediate body for fixedly connecting with the base, a circular arc positioning block supported and fixed on the intermediate body and used to be combined with the arc surface of the load-bearing saddle, at least one end of the circular arc positioning block is provided with a movable head for fixing the end surface of the load-bearing saddle, and an adjustment screw on the bottom surface of the movable head; The four groups of positioning devices are two sets of full positioning devices, one set of semi-positioning device and one set of movable positioning device; a movable jack is arranged at the outer end of the arc positioning block of the full positioning device, and movable jacks are arranged at both ends of the arc positioning blocks of the semi-positioning device and the movable positioning device; a Y-direction measurement reference plate is arranged on the base outside the arc surface of the arc positioning block of the semi-positioning device, and a Y-direction measurement reference plate is arranged on the base outside the arc surface of the arc positioning block of the movable positioning device, and an X-direction measurement reference plate is arranged on the base of the outer end surface.

2. The bogie sub-frame wheelset radial composition detection device according to claim 1, Features: The surface of the base used for setting the full positioning device and the semi-positioning device is provided with a sliding groove of a cross structure, and the bottom surface of the intermediate body is moved or fixed in the sliding groove through a flat key.

3. The bogie sub-frame wheelset radial composition detection device according to claim 1, Features: The surface of the base used to set the movable positioning device is provided with a groove, and the step structure provided at the bottom of the intermediate body is fixed in the groove by bolts and a pressing plate.

4. The bogie sub-frame wheelset radial composition detection device according to any one of claims 1 to 3, Features: An adjusting support device for supporting the radial composition of the bogie auxiliary frame wheelset is arranged in the middle of the tire frame.

5. The bogie sub-frame wheelset radial composition detection device according to claim 4, Features: The end face of the arc positioning block is an inclined surface and is provided with a dovetail groove. The end face of one side of the movable head is an inclined surface and a raised dovetail that cooperates with the inclined surface of the arc positioning block. The movable head slides along the inclined surface under the adjustment of the adjusting screw to be wedge-fastened and positioned with an end face on the inner side of the load-bearing saddle.

6. A detection method for a bogie sub-frame wheelset radial composition detection device, Features: The following steps are involved: Step 1: hoist the radial component of the secondary frame wheelset into the detection device, make the two outer bearing saddles close to the end surface of one side of the arc positioning block of the full positioning device, adjust the overall movable positioning device to make it fit with the inner saddle surface of the bearing saddle, and rotate and adjust the support device to assist in supporting the middle part of the radial component of the wheelset; Step 2: Rotate the adjustment screws of each part to drive the movable head to move and make it wedge tightly on both sides of the U-shaped groove on the saddle surface of the load-bearing saddle, and measure the data L in turn 1 To L 7 , calculate and determine the center coordinates of each load-bearing saddle; and record the radial component serial number of the secondary frame wheelset; Among them, L 1 L is the width of the U-shaped groove on the inner saddle surface of the outer left load saddle. 2 is the width of the U-shaped groove on the inner saddle surface of the outer right load saddle, L 3 is the width of the U-shaped groove on the inner saddle surface of the inner left load saddle, L 4 is the Y-direction offset of the inner left load saddle, L 5 is the X-direction offset of the inner right load saddle, L 6 is the width of the U-shaped groove on the inner right load saddle, L 7 is the Y-direction offset of the inner right load saddle; Step 3: Reversely rotate the adjustment screw to loosen the movable top and lift out the radial component of the secondary frame wheelset; Step 4: Draw the center coordinates of the load-bearing saddle into a CAD drawing to simulate the radial composition of the wheelset. Use the CAD measurement tool to measure the diagonals a1 and a2 of the saddle axis center, calculate the diagonal difference △a of the saddle axis center △b = L 5 , and keep good records; Step 5: If the detected dimensions meet the requirements of the diagonal difference △a≤3mm between the saddle axis and the center distance difference △b≤2mm between the saddle axis, the radial composition of the sub-frame wheelset with the given serial number is determined to be qualified.

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