CN113092137A - Vehicle single-wheel circular soil tank test device - Google Patents
Vehicle single-wheel circular soil tank test device Download PDFInfo
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- CN113092137A CN113092137A CN202110388310.5A CN202110388310A CN113092137A CN 113092137 A CN113092137 A CN 113092137A CN 202110388310 A CN202110388310 A CN 202110388310A CN 113092137 A CN113092137 A CN 113092137A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/013—Wheels
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- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
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Abstract
A vehicle single-wheel circular soil box test device comprises a soil box outer wall system, a soil box inner wall system, a central lifting system, a central rotating rack system, a loading platform system and a wheel test system. The wheel test system is arranged at one end of the central rotating rack system, the central rotating rack system is arranged on the central lifting system, the central lifting system is arranged on the inner wall system of the soil tank, the wheel test system can perform circular motion in the soil tank, the central rotating rack system can drive the wheel test system to continuously rotate, and the loading platform system can perform loading. The soil tank is convenient for soil replacement. The invention can test parameters such as wheel subsidence, hook traction, driving torque, load and the like of wheels with different structures and sizes under the conditions of different speeds, different radiuses, loads, soil, wheel slip rates and the like in real time. The device has the advantages of wide application range, small occupied area, controllable environment, continuous high-speed test, convenience in mounting and dismounting and high test precision.
Description
Technical Field
The invention relates to an electric drive technology, relates to the field of planet exploration and agricultural machinery, and particularly relates to a circular soil box test bed for testing the passing performance of a wheel.
Background
Most of traditional soil box test bench is straight line shape, and equipment area is big, and the test is loaded down with trivial details, and test speed and time are limited, and the wheel commonality of test is relatively poor. As ground mechanics for vehicles develop, wheels of various structures are increasingly being focused on. In order to facilitate the passing condition of wheels with different structures under the condition of sustainable high-speed motion on the ground with a complex structure, including the passing condition of the wheels under the low gravity environment, the circular soil tank experimental device for sustainable high-speed test with high test universality is particularly important.
At present, soil box test devices aiming at single wheel mainly comprise a soil box test bench which realizes test by dragging a driving bracket through a guide rail as mentioned in Chinese patent document CN105043788A and a soil box test bench which relates to agricultural mechanical performance test as mentioned in Chinese patent document CN 104316300A. The testing device can test parameters such as traction force of the hook, subsidence amount and vehicle slip rate during driving, but cannot realize long-time continuity test and cannot carry out high-speed test. Aiming at the driving mechanism of the rotary annular soil tank test bed mentioned in the Chinese patent document CN107084234B, the testing mechanism of the testing device can only realize the circular motion with fixed radius, and has a complex structure, which is not beneficial to the later maintenance.
Disclosure of Invention
Aiming at the problems, the invention provides a circular soil box test bed device suitable for testing the performance of a wheel, which can simulate the gravity environment through a loading system to balance the wheel, simulate the continuous circumferential operation in the circular soil box under different environmental conditions of different wheels, and accurately measure performance parameters such as hook traction force, driving torque and the like in the process of advancing the wheel at different slip rates. The wheel tracking device provides an experimental platform for improving the continuous driving passing performance of the wheel on the rough ground, and especially has important significance for simulating the continuous running of the wheel on the surface of a simulated planet for a planet vehicle.
The innovative design scheme of the invention is as follows:
a circular soil box test bed testing device comprises a soil box outer wall system, a soil box inner wall system, a central lifting system, a central rotating rack system, a loading platform system and a wheel testing system. The wheel testing system is arranged at one end of the central rotating rack system, the central rotating rack system is arranged on the central lifting system, and the rotary power is provided by a driving device arranged on the central lifting system. The central lifting system is arranged on the inner wall system of the soil tank, the wheel testing system can perform circular motion in the soil tank, and power is provided by a driving device on the wheel testing system. The central rotating rack system can drive the wheel testing system to rotate continuously at a high speed, and the loading platform system can load the wheel testing system.
The soil box outer wall system comprises eight soil box outer wall plates, wherein four soil box outer wall plates carry out the sand doors, one soil box outer wall plate is provided with an access door, each soil box outer wall plate is supported by fixing rod rods at two ends of the outer wall, and the cement foundation has inclination.
The soil tank inner wall system comprises eight soil tank inner wall plates, four soil tank central stand columns and an upper support frame, and is used for supporting other systems.
The four-linkage elevator system comprises a first motor, a first commutator, elevators, lead screws and an elevating table board, wherein the four lead screws are driven by the four elevators to elevate the elevating table board through the first commutator by the first motor.
The central rotating platform system comprises a second motor, a first speed reducer, an electromagnetic clutch, a transmission shaft, a rotating platform, a platform tapered roller bearing, a platform and a four-bar mechanism. The four-bar linkage mechanism can realize the motion of the wheels under different circular motion diameters by different swing angles. Two deep groove ball bearings are sleeved outside the transmission shaft, and a sleeve is externally connected to the two bearings. The rack includes four welding shaft support, eight rectangular pipes and four short rectangular pipes of connecting the rectangular pipe, and the short rectangular pipe links together through axle and welding shaft support, and two rectangular pipes of bolted connection are passed through at short rectangular pipe both ends, and the convenience is dismantled. The straight rectangular tubes at two ends of the four-bar linkage mechanism are connected with the counterweight connecting frame through the shaft so as to suspend the loading system, and the wheel testing system is connected below the loading system at one end.
The loading system realizes loading and balance weight by increasing or decreasing barbell plates through a barbell shaft between the first balance weight connecting frame and the second balance weight connecting frame at two ends of the four-bar mechanism, and the barbell plates are fastened by the expansion sleeve.
The wheel test system comprises a third motor, a second speed reducer, a torque sensor, a second reverser, a retainer, a shaft support 2, a shaft support 1, a wheel transmission shaft, a wheel mounting flange, a wheel, a connecting aluminum plate and a wheel connecting frame, wherein an expansion sleeve is arranged between the wheel mounting flange and the wheel transmission shaft, a plurality of groups of bolt holes and replaceable center positioning rings are arranged on the wheel mounting flange, and two ends of the wheel transmission shaft are respectively connected with the wheel and the second reverser through two deep groove ball bearing bearings, the shaft support 2 and the shaft support 1. The rolling of the wheel is transmitted to the wheel transmission shaft by the third motor through the second speed reducer and the second commutator. The wheel speed can be read by the third motor, the central turntable speed can be read by the second motor, and the wheel speed and the central turntable speed can be calculated to obtain the slip ratio.
According to the innovative design scheme, compared with the prior art, the invention has the following advantages:
the third motor is matched with the second motor to realize continuous controllability of the wheel slip rate; different gravity environments can be simulated through the loading platform system to load and balance the wheels; the device is suitable for long-time high-speed testing of wheels with various structures and sizes; the occupied area is small, and the test is convenient; soil in the soil tank is convenient to replace and easy to disassemble, install and maintain, and the height of the lifting screw rod is changed, so that different swing angles of the four-bar mechanism can be realized, and the wheels can finish motion tests under different running diameters.
Drawings
FIG. 1 is a schematic perspective view of a circular single-leg comprehensive performance testing platform device according to the present invention.
Fig. 2 is a schematic view of the soil bin outer wall system of the present invention.
FIG. 3 is a schematic diagram of the outer wall panel with the salmonella groove of the present invention.
Fig. 4 is a partial schematic view of the soil bin inner wall system of the present invention.
Fig. 5 is a schematic view of the central lift system of the present invention.
Fig. 6 is a partial schematic view of the central rotating gantry system of the present invention 1.
FIG. 7 is a schematic view of the turntable of the central turntable system of the present invention.
Fig. 8 is a partial schematic view of the central rotating gantry system of the present invention, fig. 2.
FIG. 9 is a system diagram of a loading platform according to the present invention.
Fig. 10 is a schematic view of a wheel testing system of the present invention.
In the figure: 1-cement foundation, 2-soil groove outer wall plate, 3-soil groove outer wall plate with a salmonella, 4-access door, 5-outer wall fixing rod, 6-salmonella shaft support, 7-salmonella rotating shaft, 8-handle lock support, 9-salmonella, 10-handle lock, 11-salmonella handle, 12-soil groove upper support plate, 13-soil groove inner wall plate, 14-soil groove central column, 15-lifting table, 16-lead screw, 17-lifter, 18-first commutator, 19-first motor, 20-elastic coupler, 21-rack conical roller bearing, 22-electric slip ring, 23-sleeve, 24-transmission shaft, 25-second motor, 27-first reducer, 27-electromagnetic clutch, 28-motor fixing frame, 29-lead, 30-rotating table, 31-rotating table wheel, 32-angle sensor, 33-rectangular tube, 34-first balance weight connecting frame, 35-short rectangular tube, 36-welding shaft support, 37-barbell plate, 38-expansion sleeve, 39-barbell shaft, 40-third motor, 41-three-dimensional force sensor, 42-second reducer, 43-torque sensor, 44-second commutator, 45-holding frame, 46-shaft support 2, 47-shaft support 1, 48-wheel, 49-wheel mounting flange, 50-wheel transmission shaft, 51-connecting aluminum plate, 52-wheel connecting frame and 53-second balance weight connecting frame.
Detailed Description
For a more clear description of the invention, reference is made to the accompanying drawings which form a further part hereof
The circular soil box test bed device for the single-wheel ground mechanics of the vehicle comprises a soil box outer wall system, a soil box inner wall system, a central lifting system, a central rotating rack system, a loading platform system and a wheel test system. The wheel testing system is arranged at one end of the central rotating rack system, the central rotating rack system is arranged on the central lifting system, and the rotary power is provided by a driving device arranged on the central lifting system. The central lifting system is arranged on the inner wall system of the soil tank, the wheel testing system can perform circular motion in the soil tank, and power is provided by a driving device on the wheel testing system. The central rotating rack system can drive the wheel testing system to rotate continuously at a high speed, and the loading platform system can load the wheel testing system.
The soil box outer wall system includes eight soil box outer wall boards, the outer wall board of soil box is supported with 40X 20X 2's steel pipe, wherein have four soil box outer wall boards to take out salmonella 3 between the soil box outer wall board 2 and between the outer wall dead lever 5 with the handle locking, a soil box outer wall board 2 has out-in door 4, every outer wall board is supported by both ends outer wall dead lever 5, go out salmonella 3 and when guaranteeing to change soil, partial soil can evenly spill out, the efficiency is improved, also can guarantee outer wall board 2 atress balance simultaneously, avoid the artifical number of times of going out into-in door 4. The cement foundation 1 has a slope.
The inner wall system of the soil tank comprises eight inner wall plates 13 of the soil tank, four central upright columns 14 of the soil tank and an upper support frame 12, and is used for supporting other systems, the inner wall plates of the soil tank are supported by 40 multiplied by 20 multiplied by 3 steel pipes, the inner wall plates of the soil tank are made of steel plates, and the inner wall plates of the soil tank are fixed by bolts.
The central lifting system comprises a first motor 19, a first commutator 18, a lifter 17, a screw 16 and a lifting table top 15, wherein the first motor 19 drives the four screws 16 to lift the lifting table top 15 through the first commutator 18 and the four lifters 17. The screw 16 is connected with the lifting table top 15 through a bolt, the rotating table 30 is arranged on the lifting table top, and the rotating table 30 can rotate on the lifting table top 15.
The central rotating platform system comprises a second motor 25, a first speed reducer 26, an electromagnetic clutch 27, a transmission shaft 24, a rotating platform 30, a platform tapered roller bearing, a platform and a four-bar linkage mechanism. The four-bar linkage mechanism can realize the motion of the wheels under different circular motion diameters by different swing angles. The second motor 25 and the first speed reducer 26 are connected with the transmission shaft 24 through the electromagnetic clutch 27, the transmission shaft 24 is connected with the rotating table 30, and the conducting wire 29 is placed in the electric slip ring 22, so that the conducting wire cannot be wound when the table frame rotates. The rotary table 30 and the welding shaft support 36 are welded together, the welding shaft support 36 is provided with long rods formed by a straight rectangular tube 33 and a short rectangular tube 35, a four-bar linkage mechanism is formed by connecting counterweight connecting frames between every two long rods, and the short rectangular tube 35 is provided with an angle sensor 32 for measuring the sinking amount of the wheel in the advancing process. The rack comprises four welding shaft supports 36, eight rectangular pipes 33 and four short rectangular pipes 35 connected with the rectangular pipes, the short rectangular pipes 35 are connected with the welding shaft supports 36 through shafts, and two ends of each short rectangular pipe 35 are connected with the two rectangular pipes 33 through bolts, so that the rack is convenient to disassemble. The rectangular pipes 33 at two ends of the four-bar linkage mechanism are connected together through a shaft and a balance weight connecting frame 34 and used for suspending a loading system, and the loading system at one end is connected with a wheel testing system.
The loading system realizes loading and balance weight by increasing or decreasing barbell plates 37 through barbell shafts between the first balance weight connecting frame 34 and the second balance weight connecting frame 53 at two ends of the four-bar linkage, and the barbell plates are fastened by the expansion sleeves 39.
The wheel testing system comprises a third motor 40, a second speed reducer 42, a torque sensor 43, a second commutator 44, a retainer 45, a shaft support 246, a shaft support 147, a wheel transmission shaft 50, a wheel mounting flange 49, a wheel 48, a connecting aluminum plate 51 and a wheel connecting frame 52, wherein the second speed reducer 42 is connected to the lower portion of the third motor 40, the second speed reducer 42 is placed on the retainer 45, the retainer 45 is fixedly connected to the wheel connecting frame 52 through the connecting aluminum plate 51 through bolts, the wheel connecting frame 52 is connected to a three-dimensional force sensor 41, the three-dimensional force sensor 41 is used for measuring load on a wheel and traction of a hook, and the three-dimensional force sensor 41 is connected to a second counterweight connecting frame 53 to enable the wheel testing system and a rack to be connected together. The second speed reducer 42 is connected with a torque sensor 43, the torque sensor 43 is connected with a second reverser 44, the second reverser 44 is fixed in a retainer 45 through bolt connection, and the second reverser 44 is externally connected with a wheel transmission shaft 50 and wheels 48 to be connected together. The wheel mounting flange 49 is connected with the wheel transmission shaft 50 through an expansion sleeve, a plurality of groups of bolt holes and replaceable center positioning rings are arranged on the wheel mounting flange 49, and two ends of the wheel driving shaft are respectively connected with the wheel 48 and the second reverser 44 through two deep groove ball bearings, the shaft support 46 and the shaft support 47. The rolling of the wheel is transmitted from the third motor 40 to the wheel drive shaft 50 via the second reducer 42 and the second commutator 44. The wheel speed can be read directly by the third motor 40 and the central turntable speed can be read directly by the second motor 25, both of which are calculated to obtain the slip ratio.
Claims (7)
1. The utility model provides a circular soil box test device of vehicle single round includes soil box outer wall system, soil box inner wall system, central authorities 'operating system, central authorities rotate rack system, loading platform system, wheel test system sets up at central authorities and rotates rack system one end, central authorities rotate rack system and set up on central authorities' operating system, rotary power is provided by the drive arrangement who installs on central authorities 'operating system, central authorities' operating system installs on soil box inner wall system, wheel test system can carry out the circular motion in the soil box, power is provided by the drive arrangement above that, central authorities rotate rack system and can drive wheel test system and last high-speed rotatory, loading platform system can load wheel test system.
2. The soil box test stand device for vehicle single-wheel ground mechanics according to claim 1, characterized in that: the soil box outer wall system comprises eight soil box outer wall plates 2, wherein four soil box outer wall plates carry out the salmonella 3, one soil box outer wall plate is provided with an access door 4, each outer wall plate is supported by the outer wall fixing rods 5 at two ends, and when the salmonella 3 can be guaranteed to be replaced by soil, partial soil can be uniformly scattered out, so that the efficiency is improved, the stress balance of the outer wall plates 2 can be guaranteed, frequent access is avoided, and the cement foundation 1 has inclination.
3. The soil box test stand device for vehicle single-wheel ground mechanics according to claim 1, characterized in that: the inner wall system of the soil tank comprises eight inner wall plates 13 of the soil tank, four central upright posts 14 of the soil tank and an upper support frame 12 which is used for supporting other systems.
4. The soil box test stand device for vehicle single-wheel ground mechanics according to claim 1, characterized in that: the central lifting system comprises a first motor 19, a first commutator 18, a lifter 17, a screw 16 and a lifting table top 15, wherein the four lifters 17 drive the four screw 16 to lift the lifting table top 15 through the first motor 19 and the first commutator 18.
5. The soil box test stand device for vehicle single-wheel ground mechanics according to claim 1, characterized in that: the central rotating platform system comprises a second motor 25, a first speed reducer 26, an electromagnetic clutch 27, a transmission shaft 24, a rotating platform 30, a platform tapered roller bearing, a platform and a four-bar mechanism, the four-bar mechanism can realize the movement of wheels under different circular motion diameters due to different swing angles, the platform comprises four welding shaft supports 36, eight rectangular tubes 33 and four short rectangular tubes 35 connected with the rectangular tubes, the short rectangular tubes 35 are connected together through shafts and the welding shaft supports 36, two ends of each short rectangular tube 35 are connected with the two rectangular tubes 33 through bolts, the disassembly is convenient, the rectangular tubes at two ends of the four-bar mechanism are connected through the shafts and a balance weight connecting frame, and therefore a loading system is suspended, and the wheel testing system is connected under the loading system at one end.
6. The soil box test stand device for vehicle single-wheel ground mechanics according to claim 1, characterized in that: the loading system realizes loading and balance weight by increasing or decreasing the barbell plates 37 through the barbell shaft between the first balance weight connecting frame 34 and the second balance weight connecting frame 53 at the two ends of the four-bar linkage, and the barbell plates are fastened by the expansion sleeve 39.
7. The soil box test stand device for vehicle single-wheel ground mechanics according to claim 1, characterized in that: the wheel testing system comprises a third motor 40, a second speed reducer 42, a torque sensor 43, a second commutator 44, a retainer 45, a shaft support 246, a shaft support 147, a wheel transmission shaft 50, a wheel mounting flange 49, a wheel 48, a connecting aluminum plate 51 and a wheel connecting frame 52, the wheel mounting flange 49 is connected with a wheel transmission shaft 50 through an expansion sleeve 39, a plurality of groups of bolt holes and replaceable center positioning rings are arranged on the wheel mounting flange, two ends of the wheel driving shaft are respectively connected with a wheel 48 and a second reverser 44 through two deep groove ball bearing bearings, a shaft support 246 and a shaft support 147, the rolling of the wheel is transmitted to the wheel transmission shaft 50 through a second speed reducer 42 and the second reverser 44 by a third motor 40, the rotating speed of the wheel can be directly read by the third motor 40, the rotating speed of a center turntable can be directly read by a second motor 25, and the slip ratio can be obtained by calculation of the two.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110388310.5A CN113092137A (en) | 2021-04-12 | 2021-04-12 | Vehicle single-wheel circular soil tank test device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110388310.5A CN113092137A (en) | 2021-04-12 | 2021-04-12 | Vehicle single-wheel circular soil tank test device |
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| CN113092137A true CN113092137A (en) | 2021-07-09 |
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| CN202110388310.5A Pending CN113092137A (en) | 2021-04-12 | 2021-04-12 | Vehicle single-wheel circular soil tank test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115538404A (en) * | 2022-12-01 | 2022-12-30 | 中国科学院、水利部成都山地灾害与环境研究所 | Dynamic circulation load lower pile net structure load sharing test device and test method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115538404A (en) * | 2022-12-01 | 2022-12-30 | 中国科学院、水利部成都山地灾害与环境研究所 | Dynamic circulation load lower pile net structure load sharing test device and test method thereof |
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Application publication date: 20210709 |