CN108535027B - Static side-turning stability test bed for tractor - Google Patents
Static side-turning stability test bed for tractor Download PDFInfo
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- CN108535027B CN108535027B CN201810421506.8A CN201810421506A CN108535027B CN 108535027 B CN108535027 B CN 108535027B CN 201810421506 A CN201810421506 A CN 201810421506A CN 108535027 B CN108535027 B CN 108535027B
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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
Abstract
The invention discloses a static side-turning stability test bed for a tractor, which comprises a base, a test bedplate, a power device, a transmission device, a safety protection device, an anti-sideslip device and a measurement and control system, wherein the base is provided with a rack, the transmission device is installed on the rack, the transmission device is respectively connected with the power device and the test bedplate, the safety protection device and the anti-sideslip device are both installed on two sides of the test bedplate along the driving direction of the tractor, the bottom of the test bedplate is provided with a wheel positioning device, and the signal output end of the measurement and control system is respectively connected with the signal input end of the wheel positioning device and the signal input end of the test bedplate. The test bed for the static side-turning stability of the tractor is simple in test process and high in measurement and control precision, meets the requirements of stability and lifting speed of the static side-turning stability test of the tractor, and is high in bearing capacity and safe and reliable in operation.
Description
Technical Field
The invention relates to the technical field of tractor testing, in particular to a static side-turning stability test bed for a tractor.
Background
The test bed has the advantages that the static side rollover stability test bed suitable for non-road vehicles does not exist in the traditional technology, but only is used for detecting the static side rollover performance of road vehicles such as automobiles and the like, most of test beds can only carry out single-side rollover, the test preparation period is long, the operation is complex, the workload is large, the test efficiency is low, the longitudinal and transverse maximum side rollover stability angles of the vehicles cannot be detected simultaneously, the lifting power of a rollover mechanism of the test bed adopts a hydraulic system, the test requirements of stability and lifting speed in the standard NY/T1929-2010 are not easily met, the test bed structure and the measurement and control technology are complex, the cost is high, the measurement accuracy is not easily guaranteed, and the static side rollover stability test of a tractor suitable for the non.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the static side-turning stability test bed for the tractor, which has the advantages of simple test process, high measurement and control precision, high bearing capacity and safe and reliable operation, and meets the requirements of stability and lifting speed of the static side-turning stability test of the tractor.
In order to achieve the purpose, the invention adopts the technical scheme that: a static side-turning stability test bed for a tractor comprises a base, a test platen, a power device and a transmission device, wherein a rack is arranged on the base, the transmission device is installed on the rack, and the transmission device is respectively connected with the power device and the test platen; the transmission device comprises a side-turning transmission mechanism and a horizontal rotating mechanism, the side-turning transmission mechanism is installed on the rack, and the horizontal rotating mechanism is installed on the side-turning transmission mechanism; the side-turning transmission mechanism comprises a first speed changer, a driving gear shaft, a driving gear bearing seat, a driving gear, a driven gear, a rotary table and a rotary table bearing seat, wherein the first speed changer is respectively connected with the power device and the driving gear shaft, the driving gear bearing seat is connected with the rack, the driving gear shaft is arranged in the driving gear bearing seat, the driving gear is arranged on the driving gear shaft, the driven gear is arranged on two sides of the rotary table, the driving gear and the driven gear are mutually meshed, rotating shafts on two sides of the rotary table are arranged in the rotary table bearing seat, and the rotary table bearing seat is fixedly arranged on the rack; the horizontal rotating mechanism comprises a second speed changer, an anti-dislocation wheel, a supporting circular plate and a bearing, wherein the second speed changer is respectively connected with the power device and the supporting circular plate, the anti-dislocation wheel is uniformly arranged on a circular hole rim at the top end of the rotary table, the other end of the anti-dislocation wheel is connected with the supporting circular plate, the upper surface of the supporting circular plate is connected with the test bedplate, the rotary table is uniformly provided with the bearing, and the other end of the bearing is in contact with the supporting circular plate; and the bottom of the test bedplate is provided with a wheel positioning device.
When the test bed is used, the static side-turning stability test bed of the tractor is adjusted to an initial state, the test bed plate is in a horizontal position, the tested tractor is placed on the test bed plate by a crane, and wheels of the tractor are just correspondingly arranged on the wheel positioning devices at the bottom of the test bed plate; the rollover transmission mechanism is used for realizing rollover and horizontal rotation of the test bedplate, simulating the state of a tractor inclining, ascending and descending on a sloping field and testing the maximum static rollover stable angle and the maximum upward rollover angle of the tractor, and the rollover transmission mechanism drives a driving gear shaft to rotate by a power device through a first transmission and then realizes rollover transmission by mutual meshing of a driving gear and a driven gear; the horizontal rotating mechanism drives the supporting circular plate to move through a second speed changer by a power device so as to drive the test platen to horizontally rotate, the overtaking prevention wheel is arranged to better connect the supporting circular plate with the side-turning transmission mechanism, meanwhile, a bearing is arranged below the supporting circular plate in order to increase the bearing capacity, and the first speed changer and the second speed changer both adopt worm and worm gear speed changers and have a self-locking function; this static stability test bench that turns on one's side of tractor need not to turn round the tractor and carry out static stability test that turns on one's side, and the testing process is simple, and bearing capacity is strong simultaneously.
Preferably, the test bed for the static side-turning stability of the tractor further comprises a safety protection device, an anti-sideslip device and a measurement and control system, wherein the safety protection device and the anti-sideslip device are both arranged on two sides of the test bedplate along the running direction of the tractor, a side air fan is arranged on one side of the safety protection device, and a forward air resistance fan is further arranged in front of the test bedplate along the running direction of the tractor; and the signal output end of the measurement and control system is respectively connected with the signal input end of the wheel positioning device and the signal input end of the test bedplate.
The safety protection device and the anti-sideslip device are set in consideration of safety, the tractor is prevented from falling in the test process, the operation is ensured to be safe and reliable, meanwhile, the static side-turning stability test bed of the tractor can also be used for testing the wind resistance, sideslip, light and the like of other vehicles, in order to detect the wind resistance and the sideslip performance of the vehicles in the front of the driving direction of the vehicles during testing of the wind resistance in the front of the vehicles, the side-wind fan is arranged on one side of the safety protection device, and the front wind resistance fan and the side-wind fan are controlled by the measurement and control system.
Preferably, the safety protection device comprises a guardrail, a protection frame and a side-turning prevention baffle, the guardrail is installed on the test bedplate, the protection frame is movably installed on the guardrail, and the side-turning prevention baffle is movably installed on the protection frame.
The safety protection device is a safety facility for ensuring that the tractor prevents the tractor from rolling over when the tractor is at the maximum static side-turning stable angle, and the protection frame is movably arranged on the guardrail in order to adapt to the side-turning protection of the tractors with different specifications in the test process, and the side-turning prevention baffle is movably connected with the protection frame.
Preferably, the anti-sideslip device comprises an anti-sideslip baffle and a pressing plate, the pressing plate is arranged on the anti-sideslip baffle, and the anti-sideslip baffle is arranged on the test bedplate.
The anti-sideslip device is arranged to prevent the tractor from sliding off the test board due to sideslip in the rollover test process.
Preferably, the wheel positioning device is a wheel positioning weighing device or a wheel side-slipping flat belt carrier roller device.
And selecting one of the wheel alignment weighing device and the wheel side-slipping flat belt idler device for use according to the specific measurement requirement of the vehicle.
Preferably, the wheel positioning and weighing device is arranged at the bottom of the test bedplate and corresponds to a wheel parking position of a tractor; the wheel positioning and weighing device comprises a wheel positioning and weighing adjustable platform plate and a weighing box, and the wheel positioning and weighing adjustable platform plate is connected with the weighing box.
When the device is used, wheels of a test vehicle need to be parked at a designated position, a wheel positioning and weighing adjustable platform plate is arranged for conveniently positioning the vehicle, and meanwhile, a weighing box is arranged for conveniently measuring the normal pressure of the wheels on the wheel positioning and weighing adjustable platform plate, namely the normal counter force of the wheel positioning and weighing adjustable platform plate; four wheel alignment weighing devices corresponding to four tires of the vehicle coordinate to act under the action of the measurement and control system, the driving condition of the vehicle on the hilly and mountain road surface is simulated, and the off-road performance of the vehicle is tested.
Preferably, the wheel side-slipping flat belt carrier roller device is arranged at the bottom of the test bedplate and corresponds to a wheel parking position of a tractor; the wheel side-slipping flat belt carrier roller device comprises a wheel positioning weighing roller and a flat belt, and the flat belt is installed around the periphery of the wheel positioning weighing roller.
The wheel positioning weighing roller is wrapped into a whole through a flat belt, the forward wind resistance fan, the side wind fan and the measurement and control system are matched to detect the forward wind resistance and the side slip performance of the vehicle, and meanwhile, the wheel positioning weighing roller is used for weighing the test vehicle.
Preferably, the measurement and control system comprises a pressure sensor, an angle sensor and a control cabinet, the pressure sensor is installed on the wheel positioning device, the angle sensor is installed on the test bedplate, and the pressure sensor and the angle sensor are in signal connection with the control cabinet.
The pressure sensor is arranged on the wheel positioning device so as to conveniently test the pressure of the tractor on the wheel positioning device in the static side turning process; the angle sensor is arranged on the test bedplate so as to conveniently test a side-turning angle of the tractor in the static side-turning process; the control cabinet is for the convenience test record of analysis processing pressure sensor and angle sensor, and convenient control pressure sensor and angle sensor carry out the measurement simultaneously.
Preferably, the power device comprises a first motor and a second motor, and the first motor is connected with a first transmission of the side-turning transmission mechanism; the second motor is connected with a second speed changer of the horizontal rotating mechanism.
The power device comprises a first motor and a second motor, so that the side turning transmission mechanism and the horizontal rotating mechanism are driven respectively to carry out static side turning stability test on the tractor, the motor control cost is low, the measurement and control precision is high, and the requirements on the stability and the lifting speed of the static side turning test of the tractor are met easily.
The invention has the beneficial effects that:
(1) when the test bed is used, the static side-turning stability test bed of the tractor is adjusted to an initial state, the test bed plate is in a horizontal position, the tested tractor is placed on the test bed plate by a crane, and wheels of the tractor are just correspondingly arranged on the wheel positioning devices at the bottom of the test bed plate; the rollover transmission mechanism is used for realizing rollover and horizontal rotation of the test bedplate, simulating the state of a tractor inclining, ascending and descending on a sloping field and testing the maximum static rollover stable angle and the maximum upward rollover angle of the tractor, and the rollover transmission mechanism drives a driving gear shaft to rotate by a power device through a first transmission and then realizes rollover transmission by mutual meshing of a driving gear and a driven gear; the horizontal rotating mechanism drives the supporting circular plate to move through a second speed changer by a power device so as to drive the test platen to horizontally rotate, the overtaking prevention wheel is arranged to better connect the supporting circular plate with the side-turning transmission mechanism, meanwhile, a bearing is arranged below the supporting circular plate in order to increase the bearing capacity, and the first speed changer and the second speed changer both adopt worm and worm gear speed changers and have a self-locking function; the static side turning stability test bed of the tractor does not need to turn around the tractor to carry out a static side turning stability test, has simple test process and strong bearing capacity;
(2) the safety protection device and the anti-sideslip device are arranged in consideration of safety, the tractor is prevented from falling in the testing process, the safety and reliability in operation are ensured, meanwhile, the static side-turning stability test bed of the tractor can also be used for testing the wind resistance, sideslip, light and the like of other vehicles, in order to detect the forward wind resistance and sideslip performance of the vehicles, a forward wind resistance fan is arranged in front of the driving direction of the vehicles during testing the forward wind resistance, a side wind fan is arranged on one side of the safety protection device for testing the sideslip performance, and the forward wind resistance fan and the side wind fan are controlled by a measurement and control system;
(3) the safety protection device comprises a guardrail, a protection frame and a side-turning prevention baffle, wherein the guardrail is arranged on the test bedplate, the protection frame is movably arranged on the guardrail, and the side-turning prevention baffle is movably arranged on the protection frame; the safety protection device is a safety facility for ensuring that the tractor can prevent the tractor from rolling over when the tractor is at the maximum static rolling over stable angle, the protection frame is movably arranged on the guardrail in order to adapt to rolling over protection of tractors with different specifications in the test process, and the anti-rolling over baffle is movably connected with the protection frame;
(4) the anti-sideslip device comprises an anti-sideslip baffle and a pressing plate, the pressing plate is arranged on the anti-sideslip baffle, and the anti-sideslip baffle is arranged on the test bedplate; the anti-sideslip device is arranged to prevent the tractor from sliding off the test board due to sideslip in the rollover test process of the tractor;
(5) the wheel positioning device is a wheel positioning weighing device or a wheel side-sliding flat belt carrier roller device; selecting one of a wheel positioning weighing device and a wheel side-slipping flat belt carrier roller device for use according to the specific measurement requirement of the vehicle;
(6) the wheel positioning and weighing device is arranged at the bottom of the test bedplate and corresponds to the wheel parking position of the tractor; the wheel positioning and weighing device comprises a wheel positioning and weighing adjustable platform plate and a weighing box, and the wheel positioning and weighing adjustable platform plate is connected with the weighing box; when the device is used, the wheels of a test vehicle need to be parked at a designated position, a wheel positioning and weighing adjustable platform plate is arranged for conveniently positioning the vehicle, and meanwhile, a weighing box is arranged for conveniently measuring the normal pressure of the wheels on the wheel positioning and weighing adjustable platform plate, namely the normal counter force of the wheel positioning and weighing adjustable platform plate; the four wheel positioning and weighing devices corresponding to the four tires of the vehicle coordinate to act under the action of a measurement and control system, so that the driving condition of the vehicle on the hilly and mountain road surface is simulated, and the off-road performance of the vehicle is tested;
(7) the wheel side-slipping flat belt carrier roller device is arranged at the bottom of the test bedplate and corresponds to a wheel parking position of a tractor; the wheel side-slipping flat belt carrier roller device comprises a wheel positioning weighing roller and a flat belt, and the flat belt is arranged around the periphery of the wheel positioning weighing roller; the wheel positioning weighing roller is wrapped into a whole through a flat belt, the forward wind resistance fan, the side wind fan and the measurement and control system are matched to detect the forward wind resistance and the side slip performance of the vehicle, and meanwhile, the weighing roller is used for weighing the test vehicle;
(8) the measurement and control system comprises a pressure sensor, an angle sensor and a control cabinet, wherein the pressure sensor is installed on the wheel positioning device, the angle sensor is installed on the test bedplate, and the pressure sensor and the angle sensor are in signal connection with the control cabinet; the pressure sensor is arranged on the wheel positioning device so as to conveniently test the pressure of the tractor on the wheel positioning device in the static side turning process; the angle sensor is arranged on the test bedplate so as to conveniently test a side-turning angle of the tractor in the static side-turning process; the control cabinet is used for conveniently analyzing and processing the test records of the pressure sensor and the angle sensor and simultaneously conveniently controlling the pressure sensor and the angle sensor to measure;
(9) the power device comprises a first motor and a second motor, and the first motor is connected with a first transmission of the side-turning transmission mechanism; the second motor is connected with a second speed changer of the horizontal rotating mechanism; the power device comprises a first motor and a second motor, so that the side turning transmission mechanism and the horizontal rotating mechanism are driven respectively to carry out static side turning stability test on the tractor, the motor control cost is low, the measurement and control precision is high, and the requirements on the stability and the lifting speed of the static side turning test of the tractor are met easily.
Drawings
FIG. 1 is a schematic overall structure diagram of a static side-turning stability test bed of the tractor according to the invention;
FIG. 2 is a schematic front view of the overall structure of the static side-turning stability test bed of the tractor according to the present invention;
FIG. 3 is a schematic top view of the static side-turning stability test bed of the tractor according to the present invention;
FIG. 4 is a schematic overall structure diagram of a transmission device of the static side-turning stability test bed of the tractor according to the invention;
FIG. 5 is a schematic view of the overall structure of a wheel alignment weighing apparatus of the static side-turning stability test bed of the tractor according to the present invention;
FIG. 6 is a schematic view of the overall structure of a side-slipping flat belt carrier roller measuring device of the test stand for the static side-turning stability of the tractor according to the present invention;
FIG. 7 is a control system structure diagram of the static side-turning stability test bed of the tractor according to the present invention;
description of reference numerals:
1. a base; 2. a frame; 3. a first motor; 4. a transmission device; 41. a side-turning transmission mechanism; 411. a first transmission; 412. a driving gear shaft; 413. a driving gear bearing seat; 414. a driving gear; 415. a driven gear; 416. a turntable; 417. a turntable bearing seat; 42. a horizontal rotation mechanism; 421. a second transmission; 422. an anti-overtaking wheel; 423. a supporting circular plate; 424. a bearing; 5. a second motor; 6 testing the bedplate; 7. a safety device; 71. a guardrail; 72. a protective frame; 73. an anti-rollover baffle; 8. an anti-sideslip device; 81. a sideslip prevention baffle; 82. a compression plate; 9. a wheel alignment weighing device; 91. wheel positioning and weighing adjustable bedplate; 92. a weighing box; 10. a vehicle sideslip flat belt carrier roller device; 101. positioning and weighing a roller by a wheel; 102. flattening the belt; 11. a forward windage fan; 12. a side wind fan; 131. a pressure sensor; 132. an angle sensor; 133. a control cabinet.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Example 1:
as shown in fig. 1-6, a static side-turning stability test bed for a tractor comprises a base 1, a test bedplate 6, a power device and a transmission device 4, wherein a frame 2 is arranged on the base 1, the transmission device 4 is installed on the frame 2, and the transmission device 4 is respectively connected with the power device and the test bedplate 6; the transmission device 4 comprises a side-turning transmission mechanism 41 and a horizontal rotating mechanism 42, the side-turning transmission mechanism 41 is installed on the rack 2, and the horizontal rotating mechanism 42 is installed on the side-turning transmission mechanism 41; the rollover transmission mechanism 41 comprises a first transmission 411, a driving gear shaft 412, a driving gear bearing seat 413, a driving gear 414, a driven gear 415, a turntable 416 and a turntable bearing seat 417, wherein the first transmission 411 is respectively connected with the power device and the driving gear shaft 412, the driving gear bearing seat 413 is connected with the frame 2, the driving gear shaft 412 is installed in the driving gear bearing seat 413, the driving gear 414 is installed on the driving gear shaft 412, the driven gear 415 is installed on two sides of the turntable 416, the driving gear 414 and the driven gear 415 are meshed with each other, rotating shafts on two sides of the turntable 416 are installed in the turntable bearing seat 417, and the turntable bearing seat 417 is fixedly installed on the frame 2; the horizontal rotating mechanism 42 comprises a second speed changer 421, an anti-over-position wheel 422, a supporting circular plate 423 and a bearing 424, the second speed changer 421 is respectively connected with the power device and the supporting circular plate 423, the anti-over-position wheel 422 is uniformly arranged on a circular hole rim at the top end of the rotary table 416, the other end of the anti-over-position wheel 422 is connected with the supporting circular plate 423, the upper surface of the supporting circular plate 423 is connected with the test platen 6, the rotary table 416 is uniformly provided with the bearing 424, and the other end of the bearing 424 is in contact with the supporting circular plate 423; and a wheel positioning device is arranged at the bottom of the test bedplate 6.
When the test bed is used, the static side-turning stability test bed of the tractor is adjusted to an initial state, the test bed plate 6 is in a horizontal position, the tested tractor is placed on the test bed plate 6 by a crane, and wheels of the tractor are just correspondingly arranged on the wheel positioning devices at the bottom of the test bed plate 6; the rollover transmission mechanism 41 and the horizontal rotation mechanism 42 are arranged for realizing the rollover and horizontal rotation of the test bedplate, simulating the side-tipping, up-and-down-slope states of the tractor on the slope, and testing the maximum static side-tipping stable angle and the maximum upward-tipping angle of the hillside tractor, wherein the rollover transmission mechanism 41 drives the driving gear shaft 412 to rotate through the first transmission 411 by a power device, and then realizes the rollover transmission by the mutual meshing of the driving gear 414 and the driven gear 415; the horizontal rotating mechanism 42 drives the supporting circular plate 423 to move through the second transmission 421 by a power device, so as to drive the testing platen 6 to realize horizontal rotation, the over-position prevention wheel 422 is arranged to better connect the supporting circular plate 423 with the side-turning transmission mechanism 41, meanwhile, the bearing 424 is arranged below the supporting circular plate 423 in order to increase the bearing capacity, and the first transmission 411 and the second transmission 421 both adopt worm and worm gear transmissions and have a self-locking function; this static stability test bench that turns on one's side of tractor need not to turn round the tractor and carry out static stability test that turns on one's side, and the testing process is simple, and bearing capacity is strong simultaneously.
Example 2:
as shown in fig. 1-7, in this embodiment, on the basis of embodiment 1, the test bed for static rollover stability of the tractor further includes a safety protection device 7, an anti-sideslip device 8, and a measurement and control system, where the safety protection device 7 and the anti-sideslip device 8 are both installed on two sides of the test bedplate 6 along the running direction of the tractor, a side wind blower 12 is arranged on one side of the safety protection device 7, and a forward wind resistance blower 11 is further arranged in front of the test bedplate 6 along the running direction of the tractor; and the signal output end of the measurement and control system is respectively connected with the signal input end of the wheel positioning device and the signal input end of the test bedplate 6.
Consider that the security has set up safety device 7 and anti-skidding device 8, prevent that the tractor from dropping in the test procedure, ensure operation safe and reliable, this tractor quiet stability test platform of turning on one's side simultaneously still can be used to the windage of other vehicles, test such as sideslip and light, for the windage that moves ahead and the performance of sideslipping of detection vehicle, set up windage fan 11 that moves ahead in the place ahead of vehicle travel direction during the windage that moves ahead of test, the performance of testing sideslipping is in one side of safety device 7 has set up side wind fan 12, and this windage fan 11 and side wind fan 12 that move ahead are by observing and controling system control.
Example 3:
as shown in fig. 1 to 7, in this embodiment, on the basis of embodiment 1, the safety device 7 includes a guardrail 71, a protective frame 72, and a rollover prevention barrier 73, where the guardrail 71 is installed on the test platform 6, the protective frame 72 is movably installed on the guardrail 71, and the rollover prevention barrier 73 is movably installed on the protective frame 72.
The safety protection device 7 is arranged to ensure that the tractor can prevent the tractor from rolling over when the tractor is at the maximum static rolling over stabilizing angle, the protection frame 72 is movably arranged on the guardrail 71 in order to adapt to the rolling over protection of the tractors with different specifications in the testing process, and the anti-rolling over baffle 73 is movably connected with the protection frame 72.
Example 4:
as shown in fig. 1 to 7, in this embodiment, based on embodiment 1, the anti-sideslip device 8 includes an anti-sideslip baffle 81 and a pressing plate 82, the pressing plate 82 is disposed on the anti-sideslip baffle 81, and the anti-sideslip baffle 81 is disposed on the test platen 6.
The anti-sideslip device 8 is arranged to prevent the tractor from sliding off the test bedplate 6 due to sideslip in the rollover test process.
Example 5:
as shown in fig. 1 to 7, in this embodiment, on the basis of embodiment 1, the wheel alignment device is a wheel alignment weighing device 9 or a wheel side-slipping flat belt idler device 10. One of the wheel alignment weighing device 9 and the wheel side-slipping flat belt idler device 10 is selected for use according to the specific measurement requirements of the vehicle.
Example 6:
as shown in fig. 1-7, in this embodiment, on the basis of embodiment 1, the wheel alignment weighing device 9 is installed at the bottom of the test platform 6 and corresponds to a wheel parking position of a tractor; the wheel positioning and weighing device 9 comprises a wheel positioning and weighing adjustable platform plate 91 and a weighing box 92, wherein the wheel positioning and weighing adjustable platform plate 91 is connected with the weighing box 92.
When the device is used, wheels of a test vehicle need to be parked at a designated position, a wheel positioning and weighing adjustable platform plate 91 is arranged for conveniently positioning the vehicle, and meanwhile, a weighing box 92 is arranged for conveniently measuring the normal pressure of the wheels on the wheel positioning and weighing adjustable platform plate 91, namely the normal counter force of the wheel positioning and weighing adjustable platform plate. The four wheel positioning and weighing devices 9 corresponding to the four tires of the vehicle coordinate to act under the action of the measurement and control system, so that the driving condition of the vehicle on the hilly and mountain road surface is simulated, and the off-road performance of the vehicle is tested.
Example 7:
as shown in fig. 1-7, in this embodiment, on the basis of embodiment 1, the wheel side-slipping flat belt idler device 10 is installed at the bottom of the test bedplate 6 and corresponds to a wheel parking position of a tractor; the wheel side-slipping flat belt carrier roller device 10 comprises a wheel positioning weighing roller 101 and a flat belt 102, wherein the flat belt 102 is installed around the periphery of the wheel positioning weighing roller 101.
The wheel positioning weighing roller 101 is wrapped into a whole through the flat belt 102, the forward wind resistance fan 11, the side wind fan 12 and the measurement and control system are matched to detect the forward wind resistance and the side slip performance of the vehicle, and meanwhile, the test vehicle is weighed through the wheel positioning weighing roller 101.
Example 8:
as shown in fig. 1 to 7, in this embodiment, on the basis of embodiment 1, the measurement and control system includes a pressure sensor 131, an angle sensor 132, and a control cabinet 133, where the pressure sensor 131 is installed on the wheel alignment device, the angle sensor 132 is installed on the test platform 6, and both the pressure sensor 131 and the angle sensor 132 are in signal connection with the control cabinet 133.
The pressure sensor 131 is arranged on the wheel positioning device to facilitate the test of the pressure of the tractor on the wheel positioning device during the static side turning process; the angle sensor 132 is arranged on the test bedplate 6 for conveniently testing a side-turning angle of the tractor in the static side-turning process; the control cabinet 133 is used for analyzing and processing the test records of the pressure sensor 131 and the angle sensor 132, and controlling the pressure sensor 131 and the angle sensor 132 to perform measurement.
Example 9:
as shown in fig. 1 to 7, in the present embodiment, based on embodiment 1, the power plant includes a first electric machine 3 and a second electric machine 5, and the first electric machine 3 is connected to the first transmission 411 of the rollover transmission mechanism 41; the second electric motor 5 is connected to the second transmission 421 of the horizontal rotation mechanism 42.
The power device comprises the first motor 3 and the second motor 5, so that the side turning transmission mechanism 41 and the horizontal rotating mechanism 42 are respectively driven to carry out the static side turning stability test of the tractor, the motor control cost is low, the measurement and control precision is high, and the requirements of the stability and the lifting speed of the static side turning test of the tractor are easily met.
The specific working process is as follows:
starting a power switch and an operation control switch of the control cabinet 133, adjusting the static side-tipping stability test bed of the tractor to an initial state, namely that the test bedplate 6 is in a horizontal position, stably placing the tractor on the test bedplate 6 by using a crane, enabling four wheels of the tractor to be positioned on the wheel positioning weighing adjustable bedplate 91, adjusting the positions of the safety protection device 7 and the anti-side-tipping device 8, locking and fixing, starting the first motor 3, transmitting power to the side-tipping transmission mechanism 41, transmitting the power to the rotary table 416 through the first transmission 411, the driving gear shaft 412, the driving gear 414 and the driven gear 415, enabling the rotary table 416 to drive the test bedplate 6 to turn on side, recording the normal reaction force of the tire to the wheel positioning weighing adjustable bedplate 91 by the measurement and control system in real time in the tilting process of the tractor on the test bedplate 6, and when the normal reaction force of the wheel positioning weighing adjustable bedplate 91 on one side is zero, the measurement and control system actively stops the test bed from laterally turning and records the lateral turning angle of the test bed plate 6; when the side-turning stable angle on the other side of the tractor needs to be tested, the test bedplate 6 only needs to return to the initial horizontal position, and then the side-turning rotating direction of the test bedplate 6 is controlled and changed by the measurement and control system; when the longitudinal upward turning angle of the tractor is tested, when the test bedplate 6 is in the initial horizontal position, the second motor 5 is started, power is transmitted to the supporting circular plate 423 through the second transmission 421, the test bedplate 6 rotates by 90 degrees, and the upward turning angle of the tractor is tested by using the method for testing the left and right side turning stable angles of the tractor.
The working process for measuring the comprehensive performances of the cross-country, traction, light and the like of the vehicle is as follows:
starting a power switch and an operation control switch of a control cabinet 133, adjusting a static side overturning stability test bed of the tractor to an initial state, namely that a test bedplate 6 is in a horizontal position, stably placing a vehicle on the test bedplate 6 by using a crane, wherein four wheels of the vehicle are all positioned on a wheel positioning and weighing adjustable bedplate 91, and respectively controlling wheel positioning and weighing devices 9 under the four wheels to coordinate by using a measurement and control system, so that the real condition of uneven road surface is simulated, and the off-road performance of the vehicle is detected; when four wheels of the vehicle are all positioned on the wheel positioning and weighing adjustable platform plate 91, a tension sensor is arranged on the test platform plate 6 and is connected with the tail of the vehicle, and the vehicle is started to move forwards at a slow speed to test the forward traction of the vehicle; when four wheels of the vehicle are all positioned on the wheel positioning and weighing adjustable platform plate 91, a vehicle headlamp detector is arranged in front of the test platform plate 6 to detect vehicle light.
The working process for measuring the forward wind resistance and the side slip performance of the vehicle is as follows:
the power switch and the operation control switch of the control cabinet 133 are started, the static side-overturning stability test bed of the tractor is adjusted to an initial state, namely the test bedplate 6 is in a horizontal position, the vehicle is stably placed on the test bedplate 6 by a crane, four wheels of the vehicle are all positioned on the wheel side-slipping flat belt carrier roller device 10, the forward wind resistance fan 11 and the side wind fan 12 are respectively started, and the forward wind resistance and the side-slipping characteristic of the vehicle are tested by a measurement and control system.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (9)
1. A static side-turning stability test bed of a tractor is characterized by comprising a base, a test bed plate, a power device and a transmission device, wherein the base is provided with a rack; the transmission device comprises a side-turning transmission mechanism and a horizontal rotating mechanism, the side-turning transmission mechanism is installed on the rack, and the horizontal rotating mechanism is installed on the side-turning transmission mechanism; the side-turning transmission mechanism comprises a first speed changer, a driving gear shaft, a driving gear bearing seat, a driving gear, a driven gear, a rotary table and a rotary table bearing seat, wherein the first speed changer is respectively connected with the power device and the driving gear shaft, the driving gear bearing seat is connected with the rack, the driving gear shaft is arranged in the driving gear bearing seat, the driving gear is arranged on the driving gear shaft, the driven gear is arranged on two sides of the rotary table, the driving gear and the driven gear are mutually meshed, rotating shafts on two sides of the rotary table are arranged in the rotary table bearing seat, and the rotary table bearing seat is fixedly arranged on the rack; the horizontal rotating mechanism comprises a second speed changer, an anti-dislocation wheel, a supporting circular plate and a bearing, wherein the second speed changer is respectively connected with the power device and the supporting circular plate, the anti-dislocation wheel is uniformly arranged on a circular hole rim at the top end of the rotary table, the other end of the anti-dislocation wheel is connected with the supporting circular plate, the upper surface of the supporting circular plate is connected with the test bedplate, the rotary table is uniformly provided with the bearing, and the other end of the bearing is in contact with the supporting circular plate; and the bottom of the test bedplate is provided with a wheel positioning device.
2. The test bed for the stability of the tractor to turn on one's side statically according to the claim 1 is characterized by further comprising a safety protection device, an anti-sideslip device and a measurement and control system, wherein the safety protection device and the anti-sideslip device are both arranged on two sides of the test bedplate along the running direction of the tractor, a side wind fan is arranged on one side of the safety protection device, and a front wind resistance fan is further arranged in front of the test bedplate along the running direction of the tractor; and the signal output end of the measurement and control system is respectively connected with the signal input end of the wheel positioning device and the signal input end of the test bedplate.
3. The tractor static rollover stability test stand according to claim 2, wherein the safety guard includes a guardrail, a guard frame, and an anti-rollover barrier, the guardrail is mounted on the test deck, the guard frame is movably mounted on the guardrail, and the anti-rollover barrier is movably mounted on the guard frame.
4. The tractor static side-turning stability test bed according to claim 2, wherein the side-slipping prevention device comprises a side-slipping prevention baffle and a pressure strip, the pressure strip is arranged on the side-slipping prevention baffle, and the side-slipping prevention baffle is arranged on the test bedplate.
5. The tractor static side-turning stability test bed according to claim 1, wherein the wheel positioning device is a wheel positioning weighing device or a wheel side-slipping flat belt idler device.
6. The test bed for the static side-turning stability of the tractor according to claim 5, wherein the wheel positioning and weighing device is mounted at the bottom of the test bedplate and corresponds to a wheel parking position of the tractor; the wheel positioning and weighing device comprises a wheel positioning and weighing adjustable platform plate and a weighing box, and the wheel positioning and weighing adjustable platform plate is connected with the weighing box.
7. The tractor static side-turning stability test bed according to claim 5, wherein the wheel side-slipping flat belt idler device is mounted at the bottom of the test bed plate and corresponds to a wheel parking position of a tractor; the wheel side-slipping flat belt carrier roller device comprises a wheel positioning weighing roller and a flat belt, and the flat belt is installed around the periphery of the wheel positioning weighing roller.
8. The test bed for testing the static side-turning stability of the tractor according to claim 2, wherein the measurement and control system comprises a pressure sensor, an angle sensor and a control cabinet, the pressure sensor is installed on the wheel positioning device, the angle sensor is installed on the test bedplate, and the pressure sensor and the angle sensor are in signal connection with the control cabinet.
9. The tractor static rollover stability test stand according to claim 1, wherein the power plant includes a first motor and a second motor, the first motor being connected to a first transmission of the rollover transmission mechanism; the second motor is connected with a second speed changer of the horizontal rotating mechanism.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810421506.8A CN108535027B (en) | 2018-05-04 | 2018-05-04 | Static side-turning stability test bed for tractor |
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| CN201810421506.8A CN108535027B (en) | 2018-05-04 | 2018-05-04 | Static side-turning stability test bed for tractor |
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| CN108535027B true CN108535027B (en) | 2020-07-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109580097B (en) * | 2018-12-25 | 2021-01-05 | 南京工业大学 | Tractor rollover centroid detection experiment platform and detection method thereof |
| CN109724824A (en) * | 2019-03-07 | 2019-05-07 | 重庆德新机器人检测中心有限公司 | Mobile robot ramp and integrated test platform of turning on one's side |
| CN110231179B (en) * | 2019-06-19 | 2021-04-23 | 中汽研（天津）汽车工程研究院有限公司 | Vehicle crosswind stability test method |
| CN110646225A (en) * | 2019-09-24 | 2020-01-03 | 上汽通用汽车有限公司 | Test road for tire testing and tire testing method |
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| CN2720419Y (en) * | 2004-05-31 | 2005-08-24 | 财团法人车辆研究测试中心 | Inclination testing machine for locomotive foot stool |
| JP2006138736A (en) * | 2004-11-12 | 2006-06-01 | Mitsubishi Heavy Ind Ltd | Nondestructive rollover testing machine |
| JP2007114084A (en) * | 2005-10-21 | 2007-05-10 | Mitsubishi Heavy Ind Ltd | Method and device for vehicle collision test |
| CN105424382B (en) * | 2015-12-11 | 2018-07-13 | 中华人民共和国金华出入境检验检疫局 | Slide-out stabilizing tester |
| CN206648822U (en) * | 2017-04-14 | 2017-11-17 | 重庆理工大学 | A kind of electronic automobile rolling simulating bench suitable for multi-vehicle-type |
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