Differential deviation rectification test section transport vehicle system and deviation rectification method and transport method thereof

Abstract

The invention belongs to the technical field of high-speed wind tunnel tests, and discloses a differential correction test section transport vehicle system and a correction method and a transport method thereof. The differential rectification test section transport vehicle system comprises a 0m track system, a lateral bearing platform foundation, a transport vehicle system, a detection system and a drive control system. According to the deviation correction method of the differential deviation correction test section transport vehicle system, the detection reference is set, the transverse deviation value is detected, differential control over the walking wheel sets on the two sides is carried out, accurate control over the transverse position of the test section transport vehicle is achieved through differential deviation correction, wheels are protected, the rail gnawing problem is solved, and the service life of the wheels is prolonged. According to the transportation method of the differential correction test section transport vehicle system, safe and reliable transfer of the test section is achieved, the transportation efficiency is improved, and the engineering practical value is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of high-speed wind tunnel tests, and in particular relates to a differential deviation correction test section transport vehicle system and a deviation correction method and a transport method thereof. Background Art

[0002] The test section transport is one of the main tasks in the preparation of high-speed wind tunnel tests, among which the test section transport vehicle is an essential test device. At present, since the test section transport vehicle adopts a rim-type wheel-rail, the lateral position of the test section transport vehicle is limited by the rim mechanical limit, which cannot be accurately controlled, resulting in the problems of low docking accuracy and low docking efficiency of the test section transport vehicle. In addition, the rim-type wheel-rail also has the problem of rail gnawing.

[0003] Currently, there is an urgent need to develop a differential correction test section transport vehicle system and its correction method and transportation method. Summary of the invention

[0004] One technical problem to be solved by the present invention is to provide a differential correction test section transport vehicle system. Another technical problem to be solved by the present invention is to provide a correction method for a differential correction test section transport vehicle system. Still another technical problem to be solved by the present invention is to provide a transportation method for a differential correction test section transport vehicle system, so as to overcome the defects of the prior art.

[0005] The differential speed correction test section transport vehicle system of the present invention comprises a 0m track system, a side bearing foundation 3, a transport vehicle system 1, a detection system 2 and a drive control system; The 0m track system includes a longitudinal track beam located below the ground level and two parallel longitudinal rails arranged on the longitudinal track beam. The height of the longitudinal rails is 0m, and together with the wheels above, they form a flangeless wheel track 5; The side cap foundation 3 includes a plurality of civil cap foundations 9 arranged along the flangeless wheel rail 5, and the upper surface of each civil cap foundation 9 is sequentially installed with a track beam 10 and a transverse track 8 from bottom to top, the transverse track 8 is perpendicular to the flangeless wheel rail 5, the spacing of the transverse track 8 is D, and the height of the transverse track 8 is H; the test section is stored on the transverse track 8; The left and right sides of the bottom surface of the transport vehicle body 4 of the transport vehicle system 1 are respectively fixed with running wheel groups, and the running wheel groups run on the flangeless wheel rails 5; a plurality of parallel cross rails are installed on the upper surface of the transport vehicle body 4, the spacing between the cross rails is D, the height of the cross rails is H, and the cross rails are parallel to the transverse rails 8; The driving control system includes a power system and a control system; the power system includes a reducer, a variable frequency motor, a power supply system and a frequency converter, and the power system drives the transport vehicle body 4 to move along the 0m track system; the control system is connected to the frequency converter and the power supply system of the power system, and the control system controls the transport vehicle body 4 to move along the 0m track system and adjusts the speed; The detection system 2 includes a detection reference 6 and two infrared distance detectors 7, one of which is arranged at the front of the vehicle and the other is arranged at the rear of the vehicle; the detection reference 6 is a square cylinder fixed along the side walls of several civil foundations 9 and parallel to the flangeless wheel rail 5, and the height of the detection reference 6 is H1, H>H1; the infrared distance detector 7 is fixed on the transport vehicle body 4 to measure the distance between the transport vehicle body 4 and the detection reference 6.

[0006] Furthermore, the distance measurement accuracy of the detection system 2 is 0.1 mm.

[0007] The deviation correction method of the differential deviation correction test section transport vehicle system of the present invention comprises the following steps: S10 operation control system, the power system drives the transport vehicle body 4 along the 0m track system; S20. The detection system 2 measures the distance between the transport vehicle body 4 and the detection reference 6 in real time to obtain the lateral offset value of the front and rear of the transport vehicle; S30. After obtaining the offset value of the transport vehicle, the control system controls the wheel groups on the left and right sides of the bottom surface of the transport vehicle body 4 through differential control, and adjusts the speed of the wheel groups on the two flangeless wheel rails 5 in real time until the wheel groups on the two flangeless wheel rails 5 are at the same speed, so that the lateral offset value changes within a preset error range.

[0008] The transportation method of the differential speed correction test section transport vehicle system of the present invention comprises the following steps: S41. The power system of the drive control system drives the transport vehicle body 4 along the 0m track system to walk to the test section preparation station; S42. The test section travels to the top surface of the transport vehicle body 4; S43. The transport vehicle body 4 is carried in the test section, and the correction method of the transport vehicle system in the test section is used to adjust the distance between the transport vehicle body 4 and the detection reference 6 in real time to ensure that the lateral offset value changes within a preset error range; S44. The transport vehicle body 4 arrives at the designated position of the test section and unloads the test section.

[0009] The differential speed deviation correction test section transport vehicle system of the present invention has a simple structure and reliable operation.

[0010] The correction method of the differential correction test section transport vehicle system of the present invention performs differential control of the wheel groups on both sides by setting a detection reference and detecting the lateral offset value. The differential correction realizes precise control of the lateral position of the test section transport vehicle, protects the wheels, solves the rail gnawing problem, and increases the service life of the wheels.

[0011] The transportation method of the differential speed correction test section transport vehicle system of the present invention realizes the safe and reliable transportation of the test section, improves the transportation efficiency, and has engineering practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the differential speed correction test section transport vehicle system of the present invention; Figure 2 It is a schematic diagram of the structure of the test section transport vehicle in the differential speed correction test section transport vehicle system of the present invention; Figure 3 Schematic diagram of the structure of the detection system in the differential speed correction test section transport vehicle system of the present invention ( Figure 1 Ⅰ partial enlarged view); Figure 4 It is a schematic diagram of the side bearing platform foundation structure in the differential speed correction test section transport vehicle system of the present invention; Figure 5 It is a schematic diagram of the deviation correction method in the differential deviation correction test section transport vehicle system of the present invention.

[0013] In the figure, 1. transport vehicle system; 2. detection system; 3. side pedestal foundation; 4. transport vehicle body; 5. flangeless wheel rail; 6. detection reference; 7. infrared distance detector; 8. transverse track; 9. civil engineering pedestal foundation; 10. track beam. DETAILED DESCRIPTION

[0014] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0015] like Figure 1~Figure 4 As shown, the differential speed correction test section transport vehicle system of the present invention comprises a 0m track system, a side bearing foundation 3, a transport vehicle system 1, a detection system 2 and a drive control system; The 0m track system includes a longitudinal track beam located below the ground level and two parallel longitudinal rails arranged on the longitudinal track beam. The height of the longitudinal rails is 0m, and together with the wheels above, they form a flangeless wheel track 5; The side cap foundation 3 includes a plurality of civil cap foundations 9 arranged along the flangeless wheel rail 5, and the upper surface of each civil cap foundation 9 is sequentially installed with a track beam 10 and a transverse track 8 from bottom to top, the transverse track 8 is perpendicular to the flangeless wheel rail 5, the spacing of the transverse track 8 is D, and the height of the transverse track 8 is H; the test section is stored on the transverse track 8; The left and right sides of the bottom surface of the transport vehicle body 4 of the transport vehicle system 1 are respectively fixed with running wheel groups, and the running wheel groups run on the flangeless wheel rails 5; a plurality of parallel cross rails are installed on the upper surface of the transport vehicle body 4, the spacing between the cross rails is D, the height of the cross rails is H, and the cross rails are parallel to the transverse rails 8; The driving control system includes a power system and a control system; the power system includes a reducer, a variable frequency motor, a power supply system and a frequency converter, and the power system drives the transport vehicle body 4 to move along the 0m track system; the control system is connected to the frequency converter and the power supply system of the power system, and the control system controls the transport vehicle body 4 to move along the 0m track system and adjusts the speed; The detection system 2 includes a detection reference 6 and two infrared distance detectors 7, one of which is arranged at the front of the vehicle and the other is arranged at the rear of the vehicle; the detection reference 6 is a square cylinder fixed along the side walls of several civil foundations 9 and parallel to the flangeless wheel rail 5, and the height of the detection reference 6 is H1, H>H1; the infrared distance detector 7 is fixed on the transport vehicle body 4 to measure the distance between the transport vehicle body 4 and the detection reference 6.

[0016] Furthermore, the distance measurement accuracy of the detection system 2 is 0.1 mm.

[0017] The deviation correction method of the differential deviation correction test section transport vehicle system of the present invention comprises the following steps: S10 operation control system, the power system drives the transport vehicle body 4 along the 0m track system; S20. The detection system 2 measures the distance between the transport vehicle body 4 and the detection reference 6 in real time to obtain the lateral offset value of the front and rear of the transport vehicle; S30. After obtaining the offset value of the transport vehicle, the control system controls the wheel groups on the left and right sides of the bottom surface of the transport vehicle body 4 through differential control, and adjusts the speed of the wheel groups on the two flangeless wheel rails 5 in real time until the wheel groups on the two flangeless wheel rails 5 are at the same speed, so that the lateral offset value changes within a preset error range.

[0018] The transportation method of the differential speed correction test section transport vehicle system of the present invention comprises the following steps: S41. The power system of the drive control system drives the transport vehicle body 4 along the 0m track system to walk to the test section preparation station; S42. The test section travels to the top surface of the transport vehicle body 4; S43. The transport vehicle body 4 is carried in the test section, and the correction method of the transport vehicle system in the test section is used to adjust the distance between the transport vehicle body 4 and the detection reference 6 in real time to ensure that the lateral offset value changes within a preset error range; S44. The transport vehicle body 4 arrives at the designated position of the test section and unloads the test section.

[0019] Embodiment: The length of the 0m track system in this embodiment is 154m, and the spacing between the two tracks 8 of the 0m track system is 8m; the length of the cross rail is 11000mm; the wheel diameter of the walking wheel group is 1m, and one walking wheel group is provided with 5 driving wheels, each equipped with a 11kW motor, each motor is equipped with a frequency converter, and the maximum differential speed setting of the frequency converter is 3%, usually 1%.

[0020] Automatic correction strategy: like Figure 5 As shown, the front position and body deviation degree are used as two detection indicators: when the front and rear of the vehicle are on the same side of the longitudinal track centerline (hereinafter referred to as the same side), the differential speed of 1% causes the front of the vehicle to move to the opposite side of the longitudinal track centerline (hereinafter referred to as the opposite side). After the front of the vehicle reaches the opposite side by more than 0.5mm, the differential speed of 1% is reversed to correct the deviation until the front and rear of the vehicle are on the opposite side of the longitudinal track centerline (hereinafter referred to as the opposite side) and the distance between the front and rear of the vehicle and the longitudinal track centerline (hereinafter referred to as the centerline) is less than 0.5mm; when the front and rear of the vehicle are on the opposite side, if the front of the vehicle exceeds If the vehicle exceeds the center line by 0.5mm, the differential speed will be 1% to correct the deviation, and the front position will be adjusted to less than 0.5mm, until the front and rear of the vehicle are on the opposite side and the distance from the front and rear to the center line is less than 0.5mm; when the front and rear of the vehicle are on the opposite side, if the rear of the vehicle exceeds the center line by 0.5mm, the differential speed will be 1% to correct the deviation, and the rear position will be adjusted to less than 0.5mm, until the front and rear of the vehicle are on the opposite side and the distance from the front and rear to the center line is less than 0.5mm; if one of the distances between the front and rear is greater than 5mm, the vehicle will stop and personnel will need to intervene to correct the deviation manually; That is, V 左 =V 右 +4×1%; and ; V 右 =V 左 +4×1%; and >0 or -0.5; V 右 = V 左 +4×1%; and >0.5 or -0.5; V 左 =V 右 ; and ≤0.5, ≤0.5; V 右 =V 左 +4×1%; and >-5 or 0.5; V右 =V 左 +4×1%; and >-5 or 0.5; V 右 =V 左 +4×1%; and ; Among them, V 左 is the speed of the left driving wheel of the transport vehicle, V 右 is the speed of the right driving wheel of the transport vehicle, ya is the lateral displacement of the front end of the transport vehicle, yb It is the lateral displacement value of the rear end of the transport vehicle, and the speed unit is m / min.

[0021] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and implementation modes. For those familiar with the art, all features disclosed in the present invention, or steps in all methods or processes disclosed, except for mutually exclusive features and / or steps, can be combined in any way without departing from the principles of the present invention. The present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A differential speed correction test section transport vehicle system, characterized in that: The differential speed correction test section transport vehicle system comprises a 0m track system, a side bearing foundation (3), a transport vehicle system (1), a detection system (2) and a drive control system; The 0m track system includes a longitudinal track beam located below the ground level and two parallel longitudinal rails arranged on the longitudinal track beam. The height of the longitudinal rails is 0m, and together with the wheels above, they form a flangeless wheel track (5); The side cap foundation (3) includes a plurality of civil cap foundations (9) arranged along the flangeless wheel track (5), and a track beam (10) and a transverse track (8) are sequentially installed on the upper surface of each civil cap foundation (9) from bottom to top, the transverse track (8) is perpendicular to the flangeless wheel track (5), the spacing of the transverse tracks (8) is D, and the height of the transverse tracks (8) is H; the test section is stored on the transverse track (8); The transport vehicle system (1) has a transport vehicle body (4) with wheel assemblies fixed on the left and right sides of the bottom surface, respectively, and the wheel assemblies travel on flangeless wheel rails (5); a plurality of parallel cross rails are installed on the upper surface of the transport vehicle body (4), the spacing between the cross rails is D, the height of the cross rails is H, and the cross rails are parallel to the transverse rails (8); The drive control system includes a power system and a control system; the power system includes a reducer, a variable frequency motor, a power supply system and a frequency converter, and the power system drives the transport vehicle body (4) to move along the 0m track system; the control system is connected to the frequency converter and the power supply system of the power system, and the control system controls the transport vehicle body (4) to move along the 0m track system and adjusts the speed; The detection system (2) comprises a detection reference (6) and two infrared distance detectors (7), wherein one infrared distance detector (7) is arranged at the front of the vehicle and the other infrared distance detector (7) is arranged at the rear of the vehicle; the detection reference (6) is a square cylinder fixed along the side walls of a plurality of civil construction foundations (9) and parallel to the flangeless wheel rail (5); the height of the detection reference (6) is H1, H>H1; the infrared distance detector (7) is fixed on the transport vehicle body (4) to measure the distance between the transport vehicle body (4) and the detection reference (6).

2. The differential speed correction test section transport vehicle system according to claim 1 is characterized in that: The distance measurement accuracy of the detection system (2) is 0.1 mm.

3. A deviation correction method for a differential deviation correction test section transport vehicle system, which is used for the differential deviation correction test section transport vehicle system described in any one of claims 1 to 2, characterized in that: The following steps are involved: S10 operation control system, the power system drives the transport vehicle body (4) along the 0m track system; S20. The detection system (2) measures the distance between the transport vehicle body (4) and the detection reference (6) in real time to obtain the lateral offset values ​​of the front and rear of the transport vehicle; S30. After obtaining the offset value of the transport vehicle, the control system controls the wheel assemblies on the left and right sides of the bottom surface of the transport vehicle body (4) through differential control, and adjusts the speed of the wheel assemblies on the two flangeless wheel rails (5) in real time until the wheel assemblies on the two flangeless wheel rails (5) are at the same speed, so that the lateral offset value changes within a preset error range.

4. A transportation method for a differential speed correction test section transport vehicle system, which is based on the correction method for a differential speed correction test section transport vehicle system according to claim 3, characterized in that: The following steps are involved: S41. The power system of the drive control system drives the transport vehicle body (4) to walk along the 0m track system to the test section preparation station; S42. The test section travels to the top surface of the transport vehicle body (4); S43. The transport vehicle body (4) moves forward on the test section, and the distance between the transport vehicle body (4) and the detection reference (6) is adjusted in real time by the deviation correction method of the differential deviation correction test section transport vehicle system to ensure that the lateral deviation value changes within a preset error range; S44. The transport vehicle body (4) arrives at the designated position of the test section and unloads the test section.

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