Steering profiling torsion-resistant bowing angle measuring device
By using laser rangefinder and triangular cosine theorem in the steering profile anti-twist waist angle measurement device, the problem of high measurement cost and large error in the prior art is solved, and high-precision and real-time steering angle measurement is achieved. It is suitable for Various tractors.
Patent Information
- Application Number
- CN202411360070.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2024-12-13
AI Technical Summary
The prior art when measuring the steering angle of a mountain articulated wheel tractor, it is cost-effective, complex in operation, and large errors, and has low adaptability to different agricultural vehicles, especially when the vehicle twists, it is difficult to measure in real time.
A steering profile anti-torsion waist angle measurement device is designed, and the straight-line distance between the first and second rotating support plates on the intermediate shaft is measured by a laser rangefinder, and the folding steering angle is calculated based on the triangle cosine theorem to realize Accurate measurement.
The device simplifies the measurement process, improves the accuracy and real-time performance of angle measurement, and is suitable for a variety of bent steering tractors, which are highly operable and suitable for practical promotion.
Smart Images
Figure CN119124043A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to an angle measuring device used in the mechanical field, in particular to a steering profiling anti-torsion waist angle measuring device. Background Art
[0002] At present, most of the key parts of the steering parts of the bending steering tractors on the market are hinged. According to the latest standard T / NJ 1169-2018, they are called mountain articulated wheel tractors. Compared with traditional tractors, this type of tractor has a smaller steering radius and higher flexibility, which is more suitable for agricultural production needs in hilly and mountainous areas. The measurement and detection of the steering angle of mountain articulated wheel tractors is one of the key indicators. The current measurement standards are as follows:
[0003] (1) A bench test is conducted. A measuring bench is manufactured. One axle of the tractor is kept stationary, and the other axle is supported by a sliding mechanism or pulley. The steering wheel is turned to one side to the maximum angle, and the measurement is performed using a ground reference line or an instrument. After the test is completed, the steering wheel is turned to the other side to the maximum angle and the measurement is performed. The sum of the maximum steering angles on both sides is divided by 2 as the measured value.
[0004] (2) Two angle sensors with telescopic functions are used and fixed with magnets on the machine body on both sides of the bending turning point, with a distance of not less than 100 mm from the longitudinal plane of the vehicle perpendicular to the ground and passing through the bending turning point. The fixed plane should be parallel to the ground plane. When the machine body rotates, the two angle sensors measure the angle values respectively, and then the bending turning angle is obtained through plane geometry conversion.
[0005] In addition, there is no instrument on the market that can specifically measure steering angles. Method (1) requires a large investment in the production of a bench test bench and the construction of a measuring instrument, which is costly, complicated, and has low practical feasibility. Method (2) uses two retractable angle sensors to measure and convert the angles. This method does not have a special mechanical structure for binding, and has a large error in actual measurement. It is also not very adaptable to different types of agricultural vehicles. When the vehicle twists, the error will be further increased, and real-time data reading and real-time measurement are not possible.
[0006] Therefore, those skilled in the art are committed to developing a steering profiling anti-torsion waist angle measurement device to simplify the angle measurement process and improve the angle measurement accuracy. Summary of the invention
[0007] In view of the above-mentioned defects in the prior art, the technical problem to be solved by the present invention is to provide a steering profiling anti-torsion waist angle measurement device.
[0008] To achieve the above-mentioned purpose, the present invention provides a steering profiling anti-torsion bending angle measuring device, comprising an intermediate shaft, on which a first rotating support plate and a second rotating support plate are rotatably matched, the first rotating support plate and the second rotating support plate are respectively slidably matched with a first rotating baffle plate and a second rotating baffle plate at their bottoms, a telescopic rod sleeve is provided on the first rotating baffle plate, a telescopic rod is provided on the second rotating baffle plate, the telescopic rod is slidably matched in the telescopic rod sleeve, and a laser rangefinder is provided on the second rotating baffle plate. The present invention converts the rotational motion of the first rotating support plate and the second rotating support plate into the linear motion of the first rotating baffle plate and the second rotating baffle plate, and then measures the linear distance between the first rotating baffle plate and the second rotating baffle plate by a laser rangefinder, and calculates the bending steering angle by using the measured data through the triangular cosine theorem, so that the error of the measurement result is less than 0.5%.
[0009] Preferably, a first sliding groove and a second sliding groove are respectively formed at the bottom of the first rotating support plate and the second rotating support plate, a first sliding block is slidably fitted in the first sliding groove, and a second sliding block is slidably fitted in the second sliding groove.
[0010] Preferably, a first groove is formed at the bottom of the first sliding block, a connecting piece is rotatably fitted in the first groove, and the bottom of the connecting piece is fixedly connected to the top of the first rotating baffle;
[0011] Preferably, the second sliding block is rotatably matched with the second sliding groove, and the bottom of the second sliding block is fixedly connected to the top of the second rotating baffle.
[0012] Preferably, the first rotating baffle and the second rotating baffle are arranged in parallel, and the laser rangefinder is arranged perpendicular to the second rotating baffle.
[0013] Preferably, a third slide groove is formed on the top of the first rotating support plate, the bottom of the third slide groove is connected to the first slide groove, a fixed clamp block is slidably matched in the third slide groove, the bottom of the fixed clamp block is fixedly connected to the first slider, an adjusting bolt is provided on one side of the fixed clamp block, and the bottom of the adjusting bolt can abut against the side wall of the first rotating support plate;
[0014] A plurality of limiting grooves are formed on the top of the second rotating support plate, and the limiting grooves are connected to the second sliding grooves, and a limiting plate is fitted in the limiting grooves.
[0015] Preferably, a first vertical plate is provided at one end of the first rotating support plate away from the intermediate shaft, a semicircular bracket is detachably connected to the top of the first vertical plate, a second vertical plate is provided at one end of the second rotating support plate away from the intermediate shaft, a square bracket is detachably connected to the top of the second vertical plate, a contoured bracket is provided at the top of the intermediate shaft, and a ranging plate is detachably connected to the bottom of the intermediate shaft, and the distance between the first rotating baffle and the ranging plate and the distance between the second rotating baffle and the ranging plate can be measured and calculated by setting the ranging plate.
[0016] Preferably, a radially arranged through hole is opened in the middle and lower section of the intermediate shaft, and a plug is arranged in the through hole.
[0017] Preferably, the bottom of the first rotation support plate abuts against the top of the second rotation support plate, and the bottom of the second rotation support plate abuts against the side wall of the plug.
[0018] The beneficial effects of the present invention are as follows: when the lengths of two sides are known, the present invention uses a laser rangefinder to detect the length of the remaining side in real time, and calculates the bending steering angle by the cosine theorem of the triangle. The detection is convenient, fast, and has high precision, and the structure is simple, which is easy to disassemble and replace. It is suitable for a variety of bending steering tractors, has stronger operability, and is suitable for practical promotion. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a structural schematic diagram of a specific implementation mode of the present invention.
[0020] Figure 2 It is a schematic diagram of the assembly of the first rotating support plate and the first rotating baffle in a specific implementation manner of the present invention.
[0021] Figure 3 yes Figure 2 A schematic diagram of the enlarged local structure in the middle.
[0022] Figure 4 It is a schematic diagram of the assembly of the second rotating support plate and the second rotating baffle plate in a specific implementation manner of the present invention.
[0023] 1. Intermediate shaft; 21. First rotating support plate; 22. First rotating baffle; 23. Telescopic rod sleeve; 24. First slide groove; 25. First slider; 26. First groove; 27. Connector; 28. Third slide groove; 29. First vertical plate; 31. Second rotating support plate; 32. Second rotating baffle; 33. Telescopic rod; 34. Second slide groove; 35. Second slider; 36. Second vertical plate; 4. Laser rangefinder; 5. Fixed clamp; 6. Adjusting bolt; 7. Limiting groove; 8. Limiting plate; 9. Semicircular bracket; 10. Square bracket; 11. Contour bracket; 12. Distance measuring plate; 13. Plug. DETAILED DESCRIPTION
[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific manner, and therefore cannot be understood as limiting the present invention. The terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0025] like Figure 1-3 As shown, a steering profiling anti-torsion waist angle measuring device includes an intermediate shaft 1, on which a first rotating support plate 21 and a second rotating support plate 31 are rotatably matched. In this embodiment, the first rotating support plate 21 and the second rotating support plate 31 are clearance-matched with the intermediate shaft 1, and the bottom of the first rotating support plate 21 abuts against the top of the second rotating support plate 31. This design can maximize the space saving of the machine body and improve the measurement accuracy. The bottoms of the first rotating support plate 21 and the second rotating support plate 31 are respectively slidably matched with a first rotating baffle plate 22 and a second rotating baffle plate 32. The first rotating baffle plate 22 and the second rotating baffle plate 32 are arranged in parallel, and an extension is provided on the first rotating baffle plate 22. The telescopic rod sleeve 23, the second rotating baffle 32 is provided with a telescopic rod 33, the telescopic rod sleeve 23 and the telescopic rod 33 are coaxially arranged, and the telescopic rod 33 is slidably matched in the telescopic rod sleeve 23. In this embodiment: the telescopic rod 33 and the telescopic rod sleeve 23 are clearance-matched. When the angle between the first rotating support plate 21 and the second rotating support plate 31 is reduced, the telescopic rod 33 and the telescopic rod sleeve 23 respectively drive the second rotating baffle 32 and the first rotating baffle 22 to move toward each other, and vice versa. The second rotating baffle 32 is provided with a laser rangefinder 4, and a display screen can be connected to the laser rangefinder 4 to facilitate observation of specific values. The laser rangefinder 4 is vertically arranged to the second rotating baffle 32 to ensure the accuracy of the measurement data.
[0026] A contoured bracket 11 is connected to the top of the intermediate shaft 1, and a radially arranged through hole is opened in the middle and lower sections. A plug 13 is arranged in the through hole. The plug 13 supports the first rotating support plate 21 and the second rotating support plate 31. A second groove is also arranged at the bottom of the intermediate shaft 1, and a distance measuring plate 12 is detachably connected to the second groove. When in use, the first rotating support plate 21 and the second rotating support plate 31 are adjusted to a straight state, the laser rangefinder 4 is turned on, and the distance measuring plate 12 is inserted into the second groove to measure the distance L1 between the second rotating baffle 32 and the distance measuring plate 12. Then, the distance measuring plate 12 is taken out to measure the spacing L2 between the first rotating baffle 22 and the second rotating baffle 32. The distance L3 between the distance measuring plate 12 and the first rotating baffle 22 can be obtained by subtracting the spacing L1 from the second rotating baffle 32 to the distance measuring plate 12 from the spacing L2 from the second rotating baffle 32 to the first rotating baffle 22, that is, L2-L1=L3.
[0027] In this embodiment: the first rotating support plate 21 and the second rotating support plate 31 are respectively provided with a first slide groove 24 and a second slide groove 34 at the bottom, and a first slider 25 is slidably matched in the first slide groove 24. The first slider 25 is a rectangular block made of low-friction material. The first slider 25 can slide back and forth along the first slide groove 24. A first groove 26 is provided at the bottom of the first slider 25. A connecting piece 27 is rotatably matched in the first groove 26. In this embodiment, the connecting piece 27 is cylindrical and can rotate in the first groove 26. The first groove 26 adopts an open design at one end to facilitate the removal and replacement of the connecting piece 27. The bottom of the connecting piece 27 is fixedly connected to the top of the first rotating baffle 22, that is, the first slider 25 can drive the first rotating baffle 22 to slide back and forth along the first slide groove 24, and the connecting piece 27 rotates in the first groove 26 during the sliding process, so that the first rotating baffle 22 and the second rotating baffle 32 always remain in a parallel state.
[0028] A second slider 35 is slidably engaged in the second slide groove 34, and the second slider 35 can slide back and forth along the second slide groove 34. Specifically, the second slider 35 is a short cylindrical shape and rotatably engaged with the second slide groove 34. In this embodiment, the second slider 35 and the second slide groove 34 have a clearance fit, and the bottom of the second slider 35 is fixedly connected to the top of the second rotating baffle 32. The second slider 35 can drive the second rotating baffle 32 to rotate or slide synchronously.
[0029] In this embodiment: a third sliding groove 28 is opened on the top of the first rotating support plate 21, and the bottom of the third sliding groove 28 is connected to the first sliding groove 24. A fixed clamp block 5 is slidably matched in the third sliding groove 28, and the bottom of the fixed clamp block 5 is fixedly connected to the first sliding block 25. One end of the fixed clamp block 5 is inserted into the third sliding groove 28 and fixedly connected to the top of the first sliding block 25. The sliding fixed clamp block 5 can drive the first sliding block 25 and the first rotating baffle 22 to move synchronously. An adjusting bolt 6 is provided on the other side of the fixed clamp block 5. The bottom of the adjusting bolt 6 can abut against the side wall of the first rotating support plate 21. When in use, the adjusting bolt 6 is rotated to make the bottom of the adjusting bolt 6 abut against the side wall of the first rotating support plate 21, which can play a role in locking the first sliding block 25.
[0030] A plurality of limiting grooves 7 are formed on the top of the second rotating support plate 31 . The limiting grooves 7 are connected to the second sliding groove 34 . A limiting plate 8 is provided in the limiting groove 7 . The second sliding block 35 can be limited by plugging and unplugging the limiting plate 8 .
[0031] In the present embodiment: a first vertical plate 29 is provided at one end of the first rotating support plate 21 away from the intermediate shaft 1, and a semicircular bracket 9 is detachably connected to the top of the first vertical plate 29; a second vertical plate 36 is provided at one end of the second rotating support plate 31 away from the intermediate shaft 1, and a square bracket 10 is detachably connected to the top of the second vertical plate 36; in the present embodiment, the semicircular bracket 9 is connected to the motor of the bending tractor to support the motor, and the square bracket 10 supports the rear part of the bending steering wheel; the semicircular bracket 9 and the square bracket 10 are both connected by threads; other methods such as clamping, welding, etc. can be used in other embodiments to facilitate the replacement and use of other contoured brackets; another advantage of using threaded connection in the present example is that after the semicircular bracket 9 and the square bracket 10 are connected to the bending tractor, the height of the semicircular bracket 9 and the square bracket 10 can be adjusted by threads, which is convenient for the equipment to keep level, extend the service life of the equipment, and further improve the measurement accuracy.
[0032] When in use: rotate the first rotating support plate 21 and the second rotating support plate 31 to make the first rotating support plate 21 and the second rotating support plate 31 straight, turn on the laser rangefinder 4, respectively measure the distance L1 between the second rotating baffle 32 and the distance measuring plate 12 and the spacing L2 between the first rotating baffle 22 and the second rotating baffle 32, and assume that the spacing between the first rotating baffle 22 and the distance measuring plate 12 is L3, and substitute the formula (L2-L1=L3) to calculate the distance between the first rotating baffle 22 and the distance measuring plate 12 The specific value of L3, when L1 and L3 are known, assume that the angle between the first rotating support plate 21 and the second rotating support plate 31, that is, the bending steering angle, is β, and then after the application is connected to the bending tractor, the real-time spacing L4 between the first rotating baffle 22 and the second rotating baffle 32 is measured by the laser rangefinder 4, and L1, L3, and L4 are substituted into the triangle cosine theorem (L42=L12+L32-2*L1*L3cosβ) to calculate the bending steering angle β of the equipment.
[0033] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.
Claims
1. A steering profiling anti-torsion waist angle measurement device, characterized in that: The invention comprises an intermediate shaft (1), wherein a first rotating support plate (21) and a second rotating support plate (31) are rotatably matched on the intermediate shaft (1), a first rotating baffle plate (22) and a second rotating baffle plate (32) are slidably matched at the bottom of the first rotating support plate (21) and the second rotating support plate (31), a telescopic rod sleeve (23) is provided on the first rotating baffle plate (22), a telescopic rod (33) is provided on the second rotating baffle plate (32), the telescopic rod (33) is slidably matched in the telescopic rod sleeve (23), and a laser rangefinder (4) is provided on the second rotating baffle plate (32).
2. The device for measuring the angle of the steering profiling anti-torsion waist according to claim 1, characterized in that: The first rotating support plate (21) and the second rotating support plate (31) are respectively provided with a first sliding groove (24) and a second sliding groove (34); a first sliding block (25) is slidably fitted in the first sliding groove (24), and a second sliding block (35) is slidably fitted in the second sliding groove (34).
3. The device for measuring the angle of the steering profiling anti-torsion waist according to claim 2, characterized in that: A first groove (26) is formed at the bottom of the first sliding block (25), a connecting piece (27) is rotatably fitted in the first groove (26), and the bottom of the connecting piece (27) is fixedly connected to the top of the first rotating baffle (22); The second sliding block (35) is rotationally matched with the second sliding groove (34), and the bottom of the second sliding block (35) is fixedly connected to the top of the second rotating baffle (32).
4. The device for measuring the angle of the steering profiling anti-torsion waist according to claim 1, characterized in that: The first rotating baffle (22) and the second rotating baffle (32) are arranged in parallel, and the laser rangefinder (4) is arranged perpendicular to the second rotating baffle (32).
5. The device for measuring the angle of the steering profiling anti-torsion waist according to claim 4, characterized in that: A third slide groove (28) is formed on the top of the first rotating support plate (21), the bottom of the third slide groove (28) is connected to the first slide groove (24), a fixed clamping block (5) is slidably matched in the third slide groove (28), the bottom of the fixed clamping block (5) is fixedly connected to the first sliding block (25), an adjusting bolt (6) is provided on one side of the fixed clamping block (5), and the bottom of the adjusting bolt (6) can abut against the side wall of the first rotating support plate (21); A plurality of limiting grooves (7) are formed on the top of the second rotating support plate (31), and the plurality of limiting grooves (7) are connected to the second sliding groove (34), and a limiting plate (8) is fitted in the limiting groove (7).
6. The device for measuring the angle of the steering profiling anti-torsion waist according to claim 4 or 5, characterized in that: A first vertical plate (29) is provided at one end of the first rotating support plate (21) away from the intermediate shaft (1), and a semicircular bracket (9) is detachably connected to the top of the first vertical plate (29).
7. The device for measuring the angle of the steering profiling anti-torsion waist according to claim 6, characterized in that: A second vertical plate (36) is provided at one end of the second rotating support plate (31) away from the intermediate shaft (1), and a square bracket (10) is detachably connected to the top of the second vertical plate (36).
8. The device for measuring the angle of the steering profiling anti-torsion waist according to claim 1, characterized in that: A contoured bracket (11) is arranged on the top of the intermediate shaft (1), and a distance measuring plate (12) is detachably connected to the bottom of the intermediate shaft (1).
9. The device for measuring the angle of the steering profiling anti-torsion waist according to claim 8, characterized in that: A radially arranged through hole is opened in the middle and lower section of the intermediate shaft (1), and a plug (13) is arranged in the through hole.
10. The device for measuring the angle of the steering profiling anti-torsion waist according to claim 1, characterized in that: The bottom of the first rotating support plate (21) abuts against the top of the second rotating support plate (31), and the bottom of the second rotating support plate (31) abuts against the side wall of the plug (13).