CN111751125A - Tractor reinforced corrosion test road and method - Google Patents
Tractor reinforced corrosion test road and method Download PDFInfo
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- CN111751125A CN111751125A CN202010612563.1A CN202010612563A CN111751125A CN 111751125 A CN111751125 A CN 111751125A CN 202010612563 A CN202010612563 A CN 202010612563A CN 111751125 A CN111751125 A CN 111751125A
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/0278—Arrangement or mounting of spray heads
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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
- G01M17/06—Steering behaviour; Rolling behaviour
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/006—Investigating resistance of materials to the weather, to corrosion, or to light of metals
Abstract
The invention discloses a tractor reinforced corrosion test road and a method, wherein a high-position spraying assembly and a side-position spraying assembly are arranged on two sides and the upper part of a saline washboard road to realize a dynamic salt spray test of a vehicle; the automation is strong, the spraying test of salt mist is carried out when vehicles with different sizes pass through a salt water washboard by automatically adjusting the spray heads on the two sides which are adaptive to the sizes of the vehicles, the adaptability is strong, and the salt mist spraying test device can be used for dynamic salt mist spraying tests of tractors, passenger cars and the like; meanwhile, the salt spray test of the vehicle body part under the deformation condition in the moving process of the vehicle can be effectively simulated, the corrosion problem of the tractor can be accurately reflected, and the urgent need of domestic tractor enterprises for improving the product corrosion resistance is met; in addition, the test and verification of the steering performance of the corroded tractor are effectively realized, and the safety performance verification of the tractor is improved.
Description
Technical Field
The invention relates to the technical field of automobile corrosion tests, in particular to a tractor reinforced corrosion test road and a method.
Background
At present, the corrosion test field is only the automobile industry standard QC/T732-2005 passenger vehicle reinforced corrosion test method, and the tractor production enterprises only have the salt fog box test of parts in the product development process and do not have the whole vehicle test.
QC/T732 was performed on a cycle by cycle basis, with 1 cycle every 24 hours, and 10 cycles (10 days) of the test corresponding to 1 year of customer car usage (abbreviated as corrosion years).
QC/T732 controls the test intensity at a predetermined standard value by monitoring the steel plate through chassis suspension.
The main test conditions and effects are as follows:
1. salt spray laboratory test: the corrosion of saline air in coastal areas to the automobile body is simulated, and the corrosion resistance of the automobile body after being subjected to salt mist is checked.
2. Running on a saline water tank and a saline water washboard road: the corrosion of salt-containing snow water to the chassis after salt spreading and snow melting in winter in northern areas is simulated.
3. Driving on a gravel road: the metal corrosion caused by the impact damage of sundries such as non-paved road stones to the paint of the chassis and the vehicle body panel is simulated.
4. Parking the environmental chamber: and simulating high-temperature and high-humidity weather in the south, and parking the sample car which finishes the corrosion working condition to accelerate corrosion.
5. And (3) strengthening loop driving: the dynamic load input is added to the automobile, salt in the practical use of the tractor is simulated to enter a gap, and the stress corrosion condition of parts and the interference among the parts are simulated.
And after each 10 cycles, thoroughly cleaning the test vehicle, comprehensively checking and evaluating the corrosion grade of all parts of the whole vehicle, taking a picture, measuring the diffusion of the vehicle body scribing, replacing the monitoring test piece, performing rust removal treatment and the like.
The test method of the passenger car cannot be directly applied to the tractor, and the main defects are as follows:
1. the salt spray tests of the vehicle are static salt spray tests, and can not simulate the salt spray tests of the vehicle body under the deformation condition in the moving process of the vehicle;
2. the size of the tractor is far larger than that of a passenger car, and the salt spray test spray head cannot be well matched with the size of the tractor and cannot achieve the expected effect;
3. the actual function of the tractor after corrosion cannot be examined due to the absence of a steering system test item;
4. the dry parking is the parking under the natural environment, and the temperature and humidity change is large in four seasons, so that the control difficulty of the test strength is large.
Disclosure of Invention
The invention aims to provide a tractor reinforced corrosion test road and a method aiming at overcoming the defects in the prior art and solving the problem that the whole tractor cannot be subjected to a salt spray test.
The invention provides a tractor reinforced corrosion test road which comprises a saline water washboard road, wherein two sides of the saline water washboard road are provided with support frames, and one end of the saline water washboard road is provided with an infrared distance meter; a ceiling is arranged at the upper end of the support frame, a high-position spraying assembly is arranged on the ceiling, and a side-position spraying assembly is arranged on the support frame; the side spraying assembly is adjustably arranged on the support frame through an adjusting assembly; the lifting device is uniformly distributed at the upper end of the support frame, the driving device is arranged at one end of the support frame, the driving device is in transmission connection with the lifting device, and the adjusting assembly is hinged to the lifting device; the infrared distance meter is connected to the driving device through the control module.
Furthermore, the high-position spraying assembly comprises an upper spraying pipe and upper spray heads, the upper spraying pipe is fixedly connected to the ceiling, and the upper spray heads are uniformly distributed on the upper spraying pipe; the side spray assembly comprises side spray pipes and side spray heads, the side spray pipes are hinged to the adjusting assembly, and the side spray heads are uniformly distributed on the side spray pipes; the side spray pipes are provided with a plurality of side spray pipes, and connecting rods are hinged among the side spray pipes; the upper spray pipe and the side spray pipe are connected to a water pump through pipelines.
Further, elevating gear includes drive sprocket, supporting seat, screw rod and swivel nut, supporting seat fixed connection in lower extreme on the support frame, the screw rod passes through the bearing rotatable locate on the supporting seat, drive sprocket connect in the one end of screw rod, be located ceiling one side drive sprocket between carry out the transmission through first chain and connect, swivel nut threaded connection in on the screw rod, adjusting part articulate in on the swivel nut.
Further, the adjusting part includes bracing piece, rectangle frame and gyro wheel, the gyro wheel is rotatable to be located on the horizontal pole of support frame, the one end of bracing piece articulate in on the side spray tube, the other end fixed connection of bracing piece in the one end of rectangle frame, the rectangle frame cup joint in on the gyro wheel, so that the other end of rectangle frame with the swivel nut articulates.
Further, the driving device comprises a driving motor, a driving gear, a driven gear, a driving chain wheel and a driven chain wheel, the driving motor is arranged at the upper end of the supporting frame, the driving gear is connected to the output end of the driving motor, the driven gear is connected to the screw rod, and the driving gear and the driven gear are in meshing transmission; the driving chain wheel is arranged at the end part of the screw rod on one side of the ceiling, the driven chain wheel is arranged at the end part of the screw rod on the other side of the ceiling, and the driving chain wheel is in transmission connection with the driven chain wheel through a second chain.
The infrared distance meter further comprises a power-on switch and a power-off switch, wherein the power-on switch is arranged at the front end of the infrared distance meter, and the power-off switch is arranged at the rear end of the support frame; the power-on switch and the power-off switch are electrically connected to the water pump.
Further, the side spraying assembly comprises an auxiliary support rod, an auxiliary rectangular frame and auxiliary rollers, wherein the auxiliary support rod is hinged to the side spraying pipe at the lower end of the side spraying assembly, the auxiliary rollers are rotatably connected to a cross rod at the bottom of the support frame, and the auxiliary rectangular frame is connected to the auxiliary support rod and sleeved on the auxiliary rollers.
The method for testing the reinforced corrosion of the tractor comprises the following steps:
s1: the test sample vehicle carries out 10 circulating road tests on a lane I, a lane II, a lane III and a lane IV; wherein the content of the first and second substances,
the passing sequence of the I lane is as follows: broken stone road-wave road-third kind stone road-second kind washboard road-strip stone road;
the passing sequence of the No. II lane is as follows: broken stone road-saline washboard road-second kind washboard road-barren rock road;
the passing sequence of the No. III lane is as follows: broken stone road-salt water tank-seed B washboard road-stone road;
the passing sequence of the lane IV is as follows: broken stone road-slurry road-second kind washboard-stone road;
s2: salt spray tests of a salt water washboard way, wherein 1 and 6 test cycles of each corrosion year are carried out, a test sample car runs on a No. III lane and a No. 1 IV lane for 1 time, then runs on a No. II lane for 5 times, and a dynamic salt spray injection test car body of an upper spray head and a side spray head is carried out through the salt water washboard way; in the test circulation of 2-5 and 7-10 in each corrosion year, the test sample vehicle runs on a No. II lane 7 times, and the dynamic salt spray injection test vehicle body of the upper spray head and the side spray heads is carried out through a salt water washboard way;
s3: the steering system test comprises the steps of stopping a test sample vehicle in a steering test area and idling, driving a steering wheel of the test sample vehicle to a limit position from a straight advancing position to the left, driving the steering wheel of the test sample vehicle to the limit position to the right, finally driving a front wheel to a straight position through the steering wheel, and continuously performing 6-8 groups of tests; the time for the steering wheel of the test sample car to stay after hitting the extreme positions towards two sides is less than or equal to 3 seconds;
s4: and (3) parking the test sample car in the environmental chamber, cutting off the power supply of the test sample car, closing all doors, windows and ventilation openings of the test sample car, drying and parking the test sample car for 10-14h in the environmental chamber with the temperature of 23 +/-2 ℃ and the relative humidity of 55 +/-3%, and then performing damp-heat parking for 6-10h at the temperature of 50 +/-2 ℃ and the relative humidity of 95 +/-3%.
Further, the salt solution concentration of the salt water washboard is 0.5%, and the salt solution concentration of the salt water tank is 1%.
Further, in the test cycles of 1 and 6 in each corrosion year, the test sample vehicle carries out dynamic salt spray injection test vehicle bodies of an upper spray head and a side spray head through a salt water washboard way at the running speed of 15 km/h; and (3) carrying out 2-5 and 7-10 test cycles in each corrosion year, wherein the test sample is used for carrying out dynamic salt spray spraying test on the upper spray head and the side spray head through a salt water washboard way 5 times before the test sample is carried out for 5 times at the running speed of 15km/h, and then carrying out dynamic salt spray spraying test on the upper spray head and the side spray head through the salt water washboard way 2 times at the running speed of 35 km/h.
Compared with the prior art, the invention has the following beneficial effects:
1. the automation is strong, the spraying test of salt mist is carried out when vehicles with different sizes pass through a salt water washboard by automatically adjusting the spray heads on the two sides which are adaptive to the sizes of the vehicles, the adaptability is strong, and the salt mist spraying test device can be used for dynamic salt mist spraying tests of tractors, passenger cars and the like;
2. the salt spray test under the deformation condition of the vehicle body part in the moving process can be effectively simulated;
3. the corrosion problem of the tractor can be accurately reflected, and the urgent need of improving the product corrosion resistance of domestic tractor enterprises is met;
4. the checking and verification of the steering performance of the corroded tractor can be effectively realized, and the safety performance verification of the tractor is improved;
5. the dynamic salt spray test can effectively simulate the actual running condition of the vehicle, and solves the problem that salt spray of a salt spray box of a passenger vehicle cannot achieve the expected effect of the tractor.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only preferred embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic diagram of a reinforced corrosion test road for a tractor according to the present invention;
FIG. 2 is an axial view of a tractor enhanced corrosion test road of the present invention;
FIG. 3 is a front view of a tractor enhanced corrosion test road of the present invention;
FIG. 4 is an enlarged view of a portion A of a corrosion-enhanced test road for a towing vehicle according to the present invention;
FIG. 5 is an enlarged view of a portion B of a corrosion-enhanced test road for a towing vehicle according to the present invention;
FIG. 6 is a schematic enlarged view of a portion C of a corrosion-enhanced test road for a towing vehicle according to the present invention;
FIG. 7 is a schematic enlarged view of a portion D of a corrosion-enhanced test road for a towing vehicle according to the present invention;
FIG. 8 is a schematic diagram of a method for testing corrosion enhancement of a tractor according to the present invention.
In the figure, 1-saline washboard road; 2-a support frame; 3-an infrared distance meter; 4-ceiling; 5-high spray assembly; a 6-side spray assembly; 7-an adjustment assembly; 8-a drive device; 9-a lifting device; 10-a power-on switch; 11-a power-off switch; 12-a connecting rod; 51-an upper nozzle; 52-upper spray head; 61-side nozzle; 62-side shower head; 71-a support bar; 72-rectangular frame; 73-a roller; 81-driving a motor; 82-a driven gear; 83-a drive gear; 84-a drive sprocket; 85-driven sprocket; 86-a second chain; 87-a tension sprocket; 91-a drive sprocket; 92-a support seat; 93-screw rod; 94-thread sleeve; 95-a first chain; 101-auxiliary support bar; 102-sub-rectangular frame; 103-secondary roller.
Detailed Description
For a better understanding of the present invention, its structure, and the functional features and advantages attained by its structure, reference is made to the following detailed description of the preferred embodiments taken in conjunction with the accompanying drawings, in which:
example 1:
as shown in fig. 1 to 7, the invention provides a reinforced corrosion test road for a tractor, which comprises a saline water washboard way 1, wherein two sides of the saline water washboard way 1 are provided with support frames 2, and the support frames 2 are provided with glass walls or corrosion-resistant partition walls; an infrared distance meter 3 is arranged at one end of the saline washboard 1, and the infrared distance meter 3 is positioned at the front end of the saline washboard 1 so as to facilitate the identification of the width and the height of the vehicle through the infrared distance meter 3; a ceiling 4 is arranged at the upper end of the support frame 2, a high-position spraying assembly 5 is arranged on the ceiling 4, and a side-position spraying assembly 6 is arranged on the support frame 2, so that the top and the side of the vehicle can be sprayed through the high-position spraying assembly 5 and the side-position spraying assembly 6; the side spraying assembly 6 is adjustably arranged on the support frame 2 through an adjusting assembly 7; the lifting device 9 is uniformly distributed at the upper end of the support frame 2, the driving device 8 is arranged at one end of the support frame 2, the driving device 8 is in transmission connection with the lifting device 9, and the adjusting assembly 7 is hinged on the lifting device 9; infrared distancer 3 passes through control module (not shown) and connects on drive arrangement 8, and control module is PLC control system to vehicle width and height after discerning through PLC control system control drive arrangement 8 work, so that drive arrangement 8 carries out angle modulation to adjusting part 7 through elevating gear 9, thereby carry out height and horizontal flexible volume to lateral spray subassembly 6 and adjust, with the dynamic salt fog of the not equidimension vehicle of adaptation experiment.
Specifically, the high-position spraying assembly 5 comprises an upper spraying pipe 51 and upper spray heads 52, wherein the upper spraying pipe 51 is fixedly connected to the ceiling 4, and the upper spray heads 52 are uniformly distributed on the upper spraying pipe 51 to spray the top of the vehicle; the side spray assembly 6 comprises side spray pipes 61 and side spray heads 62, the side spray pipes 61 are hinged on the adjusting assembly 7, and the side spray heads 62 are uniformly distributed on the side spray pipes 61 so as to spray the two sides of the vehicle; a plurality of side spray pipes 61 are arranged to improve the coverage area of side spray; connecting rods 12 are hinged among the side spray pipes 61 so as to realize synchronous lifting and contraction movement of the side spray pipes 61; the upper spray pipes 51 and the side spray pipes 61 are connected to a water pump (not shown) through pipes to pump the brine in the brine tank into the upper spray pipes 51 and the side spray pipes 61 by the water pump, so that the brine is sprayed through the upper spray heads 52 and the side spray heads 62.
Specifically, the lifting device 9 comprises a transmission chain wheel 91, a support seat 92, a screw rod 93 and a threaded sleeve 94, the support seat 92 is fixedly connected to the upper end and the lower end of the support frame 2, the screw rod 93 is rotatably arranged on the support seat 92 through a bearing, the transmission chain wheel 91 is connected to one end of the screw rod 93, and the transmission chain wheels 91 on one side of the ceiling 4 are in transmission connection through a first chain 95 so that the plurality of screw rods 93 on the support frame 2 can rotate; the threaded sleeve 94 is in threaded connection with the screw 93, and the adjusting component 7 is hinged on the threaded sleeve 94, so that the screw 93 is driven to rotate through the transmission chain wheel 91, and the threaded sleeve 94 can move up and down on the screw 93 to drive the adjusting component 7 to move for adjustment.
Specifically, the adjusting assembly 7 includes a supporting rod 71, a rectangular frame 72 and a roller 73, the roller 73 is rotatably disposed on the cross rod of the supporting frame 2, one end of the supporting rod 71 is hinged to the side spray pipe 61, the other end of the supporting rod 71 is fixedly connected to one end of the rectangular frame 72, and the rectangular frame 72 is sleeved on the roller 73, so that the other end of the rectangular frame 72 is hinged to the threaded sleeve 94; the swivel nut 94 drives the rectangular frame 72 hinged on the swivel nut to rotate and simultaneously carry out pushing movement in the lifting movement process, and the length of the rectangular frame 72 is greater than the diameter of the roller 73, so that the rectangular frame 72 can rotate on the roller 73 and simultaneously carry out pushing movement, so that the included angle between the rapid supporting rod 71 and the supporting frame 2 can be formed, the height of the opposite side spray pipe 61 can be adjusted, the horizontal direction can be stretched, and the spraying width requirements of different vehicles can be met.
Specifically, the driving device 8 includes a driving motor 81, a driving gear 83, a driven gear 82, a driving sprocket 84 and a driven sprocket 85, the driving motor 81 is disposed at the upper end of the support frame 2, the driving gear 83 is connected to the output end of the driving motor 81, the driven gear 82 is connected to the screw 93, and the driving gear 83 and the driven gear 82 are in meshing transmission; the driving chain wheel 84 is arranged at the end part of the screw 93 at one side of the ceiling 4, the driven chain wheel 85 is arranged at the end part of the screw 93 at the other side of the ceiling 4, the driving chain wheel 84 is in transmission connection with the driven chain wheel 85 through a second chain 86, so that the lifting devices 9 at two sides of the ceiling 4 synchronously rotate through the second chain 86, and the screw 93 on the support frames 2 at two sides of the ceiling 4 rotates to drive the screw sleeve 94 to synchronously lift, so that the side spray pipes 61 at two sides of the ceiling 4 perform reverse synchronous motion; the chain transmission device further comprises a tensioning chain wheel for supporting and tensioning the second chain 86 so as to avoid the problems of low transmission efficiency and swinging caused by overlong span of the second chain 86; the tension sprocket 87 is rotatably provided at one end of the ceiling 4, and the second chain 86 is looped over the tension sprocket 87.
Example 2:
as shown in fig. 1, in combination with the technical solution of embodiment 1, in this embodiment, the corrosion-enhanced test road further includes an energizing switch 10 and a power-off switch 11, the energizing switch 10 is disposed at the front end of the infrared distance meter 3, and the power-off switch 11 is disposed at the rear end of the support frame 2; the power-on switch 10 and the power-off switch 11 are electrically connected to the water pump; the power-on switch 10 and the power-off switch 11 are arranged at the front end and the rear end of the saline washboard 1 in the form of a spring (not shown) and a pressure plate (not shown) so that a vehicle presses the pressure plate to switch on and off a loop circuit of the water pump when passing through; the power-on switch 10 and the power-off switch 11 are electrically connected to the infrared distance meter 3, and the power-on switch 10 is arranged at the front end of the infrared distance meter 3, so that the infrared distance meter 3 is switched on to measure the vehicle when the vehicle passes through the power-on switch 10; specifically, the connection mode of the power-on switch 10 and the power-off switch 11 to the water pump may be a connection mode of a stair switch, and the pressing slopes of the power-on switch 10 and the power-off switch 11 are arranged in the direction in which the vehicle travels.
Example 3:
as shown in fig. 6, with the technical solutions of embodiment 1 and embodiment 2 combined, in this embodiment, the reinforced corrosion test road further includes a secondary support rod 101, a secondary rectangular frame 102, and a secondary roller 103, the secondary support rod 101 is hinged to the side spray pipe 61 at the lower end of the side spray assembly 6, the secondary roller 103 is rotatably connected to the cross rod at the bottom of the support frame 2, the secondary rectangular frame 102 is connected to the secondary support rod 101 and sleeved on the secondary roller 103, so that the side spray pipe 61 at the lower end of the side spray assembly 6 is supported and synchronously adjusted through the secondary support rod 101, the secondary rectangular frame 102, and the secondary roller 103, and the stability of the side spray assembly 6 is improved.
As shown in fig. 8, the present invention also discloses a method for testing the corrosion enhancement of the tractor, which is used for the road for testing the corrosion enhancement of the tractor, and comprises the following steps:
s1: the test sample vehicle carries out 10 circulating road tests on a lane I, a lane II, a lane III and a lane IV; wherein the content of the first and second substances,
the passing sequence of the I lane is as follows: broken stone road-wave road-third kind stone road-second kind washboard road-strip stone road;
the passing sequence of the No. II lane is as follows: broken stone road-saline washboard road-second kind washboard road-barren rock road;
the passing sequence of the No. III lane is as follows: broken stone road-salt water tank-seed B washboard road-stone road;
the passing sequence of the lane IV is as follows: broken stone road-slurry road-second kind washboard-stone road;
specifically, the passing speed of lane I is sequentially: a broken stone road 60 +/-5 km/h-a wave road 32 +/-5 km/h-a seed C stone road 48 +/-5 km/h-a seed B washboard road 55 +/-5 km/h-a barren stone road 38 +/-5 km/h;
the passing speed of the No. II lane is as follows in sequence: a gravel road is 60 +/-5 km/h, a saline washboard road is 15-35km/h, a seed B washboard road is 55 +/-5 km/h, and a stone road is 38 +/-5 km/h;
the passing speed of the No. III lane is as follows in sequence: a gravel road is 60 +/-5 km/h, a salt water tank is 15 +/-5 km/h, a seed B washboard road is 55 +/-5 km/h, and a stone road is 38 +/-5 km/h;
the passing speed of the lane IV is as follows in sequence: the gravel road is 60 +/-5 km/h, the slurry road is 20 +/-5 km/h, the seed B washboard road is 55 +/-5 km/h, and the barren rock road is 38 +/-5 km/h.
S2: 1, salt spray test of the salt water washboard way, wherein 1 and 6 test cycles of each corrosion year are that a test sample vehicle runs on a No. III lane and a No. 1 IV lane for 1 time, and then runs on a No. II lane for 5 times, so that the salt water washboard way 1 is used for carrying out dynamic salt spray test on the vehicle body by the upper spray head 52 and the side spray head 62; in each test cycle of 2-5 and 7-10 of the corrosion year, the test sample vehicle runs on a No. II lane 7 times, so as to carry out dynamic salt spray injection test on the vehicle body by the upper spray head 52 and the side spray heads 62 through the salt water washboard way 1;
s3: the steering system test comprises the steps of stopping a test sample vehicle in a steering test area and idling, driving a steering wheel of the test sample vehicle to a limit position from a straight advancing position to the left, driving the steering wheel of the test sample vehicle to the limit position to the right, finally driving a front wheel to a straight position through the steering wheel, and continuously performing 6-8 groups of tests; the time for the steering wheel of the test sample car to stay after hitting the extreme positions towards two sides is less than or equal to 3 seconds; through a steering system test, the corrosion resistance of the automobile steering system can be truly reflected, and the steering performance of the corroded tractor can be effectively checked;
s4: parking in an environment cabin, cutting off a power supply of the test sample car, closing all doors, windows and ventilation openings of the test sample car, drying and parking the test sample car for 10-14h in the environment cabin with the temperature of 23 +/-2 ℃ and the relative humidity of 55 +/-3%, and then performing damp-heat parking for 6-10h at the temperature of 50 +/-2 ℃ and the relative humidity of 95 +/-3%; the parking is carried out through the environment cabin, the constancy of temperature and humidity is guaranteed, the fluctuation of the corrosion depth of the monitoring steel plate is greatly reduced, the difficulty of controlling the test strength is reduced, and the test precision and quality are improved.
Specifically, the concentration of the salt solution in the salt water washboard 1 is 0.5%, so that a dynamic salt spray test is carried out through the salt solution on the salt water washboard 1 and spray heads on the two sides and the top; the salt solution concentration of the salt solution tank is 1% so as to facilitate the corrosion verification of the vehicle chassis.
Specifically, the test sample vehicle carries out dynamic salt spray injection test of the upper spray head 52 and the side spray head 62 through the salt water washboard 1 at a running speed of 15km/h in each test cycle of 1 and 6 of corrosion year; in each test cycle of 2-5 and 7-10 of the corrosion year, the test sample performs dynamic salt spray test of the upper spray head 52 and the side spray head 62 through the salt water washboard 1 for 5 times before the vehicle runs at the vehicle speed of 15km/h, and performs dynamic salt spray test of the upper spray head 52 and the side spray head 62 through the salt water washboard 1 for 2 times after the vehicle runs at the vehicle speed of 35 km/h.
Compared with the prior art, the invention has the following beneficial effects:
1. the automation is strong, the spraying tests of salt fog are carried out when vehicles with different sizes pass through the salt water washboard 1 by automatically adjusting the spray heads 62 at the two sides which are adaptive to the sizes of the vehicles, the adaptability is strong, and the salt water washboard can be used for dynamic salt fog spraying tests of tractors, passenger cars and the like;
2. the salt spray test under the deformation condition of the vehicle body part in the moving process can be effectively simulated;
3. the corrosion problem of the tractor can be accurately reflected, and the urgent need of improving the product corrosion resistance of domestic tractor enterprises is met;
4. the checking and verification of the steering performance of the corroded tractor can be effectively realized, and the safety performance verification of the tractor is improved;
5. the dynamic salt spray test can effectively simulate the actual running condition of the vehicle, and solves the problem that salt spray of a salt spray box of a passenger vehicle cannot achieve the expected effect of the tractor.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner. Those skilled in the art can make many possible variations and modifications to the disclosed solution, or modify equivalent embodiments using the teachings set forth above, without departing from the scope of the claimed solution. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technology of the present invention are within the protection scope of the present invention, unless the content of the technical solution of the present invention is departed from.
Claims (10)
1. A tractor reinforced corrosion test road is characterized by comprising a saline water washboard road (1), wherein two sides of the saline water washboard road (1) are provided with supporting frames (2), and one end of the saline water washboard road (1) is provided with an infrared distance meter (3); a ceiling (4) is arranged at the upper end of the support frame (2), a high-position spraying assembly (5) is arranged on the ceiling (4), and a side-position spraying assembly (6) is arranged on the support frame (2); the side spraying assembly (6) is arranged on the support frame (2) in an adjustable manner through an adjusting assembly (7); the lifting device is characterized by further comprising a driving device (8) and a lifting device (9), wherein the lifting device (9) is uniformly distributed at the upper end of the support frame (2), the driving device (8) is arranged at one end of the support frame (2), the driving device (8) is in transmission connection with the lifting device (9), and the adjusting component (7) is hinged to the lifting device (9); the infrared distance meter (3) is connected to the driving device (8) through a control module.
2. The tractor reinforced corrosion test road according to claim 1, characterized in that the high-level spray assembly (5) comprises an upper spray pipe (51) and upper spray heads (52), the upper spray pipe (51) is fixedly connected to the ceiling (4), and the upper spray heads (52) are uniformly distributed on the upper spray pipe (51); the side spray assembly (6) comprises side spray pipes (61) and side spray heads (62), the side spray pipes (61) are hinged to the adjusting assembly (7), and the side spray heads (62) are uniformly distributed on the side spray pipes (61); the number of the side spray pipes (61) is multiple, and connecting rods (12) are hinged between the side spray pipes (61); the upper spray pipe (51) and the side spray pipe (61) are connected to a water pump through pipelines.
3. The tractor reinforced corrosion test road of claim 2, wherein the lifting device (9) comprises a transmission chain wheel (91), a support seat (92), a screw rod (93) and a threaded sleeve (94), the support seat (92) is fixedly connected to the upper end and the lower end of the support frame (2), the screw rod (93) is rotatably arranged on the support seat (92) through a bearing, the transmission chain wheel (91) is connected to one end of the screw rod (93), the transmission chain wheel (91) located on one side of the ceiling (4) is in transmission connection with the transmission chain wheel (91) through a first chain (95), the threaded sleeve (94) is in threaded connection with the screw rod (93), and the adjusting assembly (7) is hinged to the threaded sleeve (94).
4. The tractor reinforced corrosion test road according to claim 3, wherein the adjusting assembly (7) comprises a supporting rod (71), a rectangular frame (72) and a roller (73), the roller (73) is rotatably arranged on a cross rod of the supporting frame (2), one end of the supporting rod (71) is hinged to the side spray pipe (61), the other end of the supporting rod (71) is fixedly connected to one end of the rectangular frame (72), and the rectangular frame (72) is sleeved on the roller (73) so that the other end of the rectangular frame (72) is hinged to the threaded sleeve (94).
5. The tractor reinforced corrosion test road according to claim 3, wherein the driving device (8) comprises a driving motor (81), a driving gear (83), a driven gear (82), a driving sprocket (84) and a driven sprocket (85), the driving motor (81) is arranged at the upper end of the support frame (2), the driving gear (83) is connected to the output end of the driving motor (81), the driven gear (82) is connected to the screw (93), and the driving gear (83) is in meshing transmission with the driven gear (82); the driving chain wheel (84) is arranged at the end part of the screw rod (93) at one side of the ceiling (4), the driven chain wheel (85) is arranged at the end part of the screw rod (93) at the other side of the ceiling (4), and the driving chain wheel (84) is in transmission connection with the driven chain wheel (85) through a second chain (86).
6. The tractor reinforced corrosion test road according to claim 2, further comprising an energizing switch (10) and a power-off switch (11), wherein the energizing switch (10) is arranged at the front end of the infrared distance meter (3), and the power-off switch (11) is arranged at the rear end of the support frame (2); the power-on switch (10) and the power-off switch (11) are electrically connected to the water pump.
7. The tractor reinforced corrosion test road according to claim 1, further comprising a secondary support rod (101), a secondary rectangular frame (102) and a secondary roller (103), wherein the secondary support rod (101) is hinged to the side spray pipe (61) at the lower end of the side spray assembly (6), the secondary roller (103) is rotatably connected to a cross rod at the bottom of the support frame (2), and the secondary rectangular frame (102) is connected to the secondary support rod (101) and sleeved on the secondary roller (103).
8. A method of a tractor reinforced corrosion test using the tractor reinforced corrosion test road according to any one of claims 1 to 7, comprising the steps of:
s1: the test sample vehicle carries out 10 circulating road tests on a lane I, a lane II, a lane III and a lane IV; wherein the content of the first and second substances,
the passing sequence of the I lane is as follows: broken stone road-wave road-third kind stone road-second kind washboard road-strip stone road;
the passing sequence of the No. II lane is as follows: broken stone road-saline washboard road-second kind washboard road-barren rock road;
the passing sequence of the No. III lane is as follows: broken stone road-salt water tank-seed B washboard road-stone road;
the passing sequence of the lane IV is as follows: broken stone road-slurry road-second kind washboard-stone road;
s2: salt spray test is carried out on the salt water washboard way (1), 1 and 6 test cycles of each corrosion year are carried out, a test sample vehicle runs on a No. III lane 1 time and a No. IV lane 1 time, then runs on a No. II lane 5 times, and a dynamic salt spray injection test vehicle body of an upper spray head (52) and a side spray head (62) is carried out through the salt water washboard way (1); in each test cycle of 2-5 and 7-10 of the corrosion year, the test sample vehicle runs on a No. II lane 7 times, so that the dynamic salt spray injection test vehicle body of the upper spray head (52) and the side spray heads (62) is carried out through the salt water washboard road (1);
s3: the steering system test comprises the steps of stopping a test sample vehicle in a steering test area and idling, driving a steering wheel of the test sample vehicle to a limit position from a straight advancing position to the left, driving the steering wheel of the test sample vehicle to the limit position to the right, finally driving a front wheel to a straight position through the steering wheel, and continuously performing 6-8 groups of tests; the time for the steering wheel of the test sample car to stay after hitting the extreme positions towards two sides is less than or equal to 3 seconds;
s4: and (3) parking the test sample car in the environmental chamber, cutting off the power supply of the test sample car, closing all doors, windows and ventilation openings of the test sample car, drying and parking the test sample car for 10-14h in the environmental chamber with the temperature of 23 +/-2 ℃ and the relative humidity of 55 +/-3%, and then performing damp-heat parking for 6-10h at the temperature of 50 +/-2 ℃ and the relative humidity of 95 +/-3%.
9. The tractor enhanced corrosion test method according to claim 8, characterized in that the salt solution concentration of the salt water washboard (1) is 0.5%, and the salt solution concentration of the salt water tank is 1%.
10. The tractor reinforced corrosion test method according to claim 8, characterized in that the test sample vehicle performs dynamic salt spray injection test of the upper spray head (52) and the side spray heads (62) through the salt water washboard (1) at a running speed of 15km/h for each test cycle of 1 and 6 corrosion years; and in 2-5 and 7-10 test cycles of each corrosion year, the test sample performs dynamic salt spray spraying test on the upper spray head (52) and the side spray head (62) through the salt water washboard (1) for 5 times before the test sample at the running speed of 15km/h, and performs dynamic salt spray spraying test on the upper spray head (52) and the side spray head (62) through the salt water washboard (1) for 2 times after the test sample performs at the running speed of 35 km/h.
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