CN115452425A - Comprehensive steering wheel performance test bed and test method - Google Patents
Comprehensive steering wheel performance test bed and test method Download PDFInfo
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- CN115452425A CN115452425A CN202211045626.5A CN202211045626A CN115452425A CN 115452425 A CN115452425 A CN 115452425A CN 202211045626 A CN202211045626 A CN 202211045626A CN 115452425 A CN115452425 A CN 115452425A
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- 238000011056 performance test Methods 0.000 title claims abstract description 11
- 238000010998 test method Methods 0.000 title claims abstract description 11
- 238000012360 testing method Methods 0.000 claims abstract description 103
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 18
- 239000004744 fabric Substances 0.000 claims description 11
- 238000005452 bending Methods 0.000 claims description 7
- 230000010354 integration Effects 0.000 claims description 5
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000011161 development Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009661 fatigue test Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 210000004243 sweat Anatomy 0.000 description 2
- 238000001238 wet grinding Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009837 dry grinding Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000008269 hand cream Substances 0.000 description 1
- 239000002304 perfume Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
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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
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A comprehensive test bed for mechanical properties of a steering wheel and a test method relate to the technical field of performance tests of the steering wheel and solve the problems of high cost and low efficiency of the mechanical property tests of the steering wheel. The test bed comprises a longitudinal beam, a cross beam, a lifting platform, a torsion table, a base, a universal fixture, a steering column main shaft, a lifting motor, a torsion motor and a speed reducer assembly; the longitudinal beams are symmetrically fixed on two sides of the base, the cross beam is arranged between the two longitudinal beams, and the cross beam can move up and down along the longitudinal beams; the longitudinal beam is provided with a limiting mechanism for limiting the cross beam; the universal clamp is fixed on the lower surface of the cross beam and used for mounting a test tool; the torsion table is arranged on the upper surface of the base, the lifting table is fixed on the torsion table and used for driving the steering wheel to move up and down, and the torsion table is used for driving the lifting table to twist along the axial direction; the steering column main shaft is arranged on the lifting platform and used for fixing a steering wheel; the lifting motor respectively controls the beam and the lifting platform to move up and down through two groups of speed reducing mechanisms; the torsion motor controls the torsion table to twist through the speed reducing mechanism.
Description
Technical Field
The invention relates to the technical field of steering wheel performance tests, in particular to a comprehensive steering wheel performance test bed and a test method.
Background
The steering wheel development stage requires a number of test approvals, including mechanical performance tests and rim wear tests.
The existing steering wheel mechanical performance test can be divided into two types, namely a strength test and a durability test. At present, no comprehensive special equipment for steering wheel tests exists in the industry, and most manufacturers can perform low-speed axial large-load strength tests by using a tensile testing machine; the low-speed tangential large-load strength test can be carried out by using a torsion testing machine; the high-speed high-frequency axial low-load endurance test can be carried out by using a tension-compression fatigue testing machine; the high-speed high-frequency tangential low-load endurance test can be carried out by using a torsional fatigue testing machine. Each type of experiment like this adopts different equipment to test respectively, and the laboratory need prepare multiple test bench, and not only purchasing cost is high, and it is big to set up multiunit test bench area, extravagant laboratory space. The mechanical property test conditions of the steering wheel portion are shown in the following table.
In addition, the existing rim wear resistance test is divided into a dry grinding test and a wet grinding test, wherein the wet grinding test comprises a plurality of mediums such as acid sweat, alkaline sweat, alcohol, an interior cleaning agent, hand cream, perfume and the like, and the test equipment of most manufacturers at present can only realize the test of one medium in each turn, thereby prolonging the test approval speed and seriously influencing the product and even the whole vehicle development cycle.
Disclosure of Invention
The invention provides a comprehensive test bed for mechanical properties of a steering wheel and a test method, aiming at solving the problems of high cost and low efficiency of the existing test for the mechanical properties of the steering wheel.
The technical scheme of the invention is as follows:
a comprehensive test bed for mechanical properties of a steering wheel comprises a longitudinal beam, a cross beam, a lifting platform, a torsion platform, a base, a universal fixture, a steering column main shaft, the steering wheel, a lifting motor, a torsion motor and a speed reducer assembly;
the longitudinal beams are symmetrically fixed on two sides of the base, the cross beam is arranged between the two longitudinal beams, and the cross beam can extend along the longitudinal beams to do vertical linear movement;
the longitudinal beam is provided with a limiting mechanism for limiting the cross beam;
the universal clamp is fixed on the lower surface of the cross beam and used for mounting a test tool;
the torsion table is arranged on the upper surface of the base, the lifting table is fixed on the torsion table and used for driving the steering wheel to move up and down, and the torsion table is used for driving the lifting table to twist along the axial direction;
the steering column main shaft is arranged on the lifting platform and used for fixing a steering wheel;
the speed reducing device assembly comprises three groups of speed reducing mechanisms; the lifting motor respectively controls the beam and the lifting platform to move up and down through two groups of speed reducing mechanisms; the torsion motor controls the torsion table to twist through a group of speed reducing mechanisms.
Preferably, a screw rod is arranged on one side surface of the longitudinal beam, which is in contact with the cross beam, and the cross beam is driven by the screw rod to move up and down along the longitudinal beam.
Preferably, a sliding groove is formed in the longitudinal beam, the limiting mechanism is a limiting lock, and the limiting lock slides along the sliding groove.
Preferably, the number of the limiting locks is 2, and the limiting locks are respectively used for limiting the upper moving direction and the lower moving direction of the cross beam.
Preferably, the emergency stop device further comprises a work indicator light and an emergency stop button.
Preferably, the device further comprises a sensor, a counter and an integrated control terminal, wherein the sensor is used for collecting a test load value, a displacement value and a torsion angle value, the counter is used for recording the number of times of a cyclic test, and the integrated control terminal is used for recording test data and calculating a test result.
A method for testing the pressing operation force and the stroke of a horn of a steering wheel applies the comprehensive test bed for the mechanical performance of the steering wheel, and the method comprises the following steps:
the universal fixture is provided with the pressing contact, the steering wheel is arranged on the lifting platform through the steering column main shaft, and the lifting motor controls the beam to move downwards, so that the pressing contact is in contact with the horn of the steering wheel and presses down, and a pressing control force and a pressing stroke test result are obtained.
A method for testing the torsional strength and the torsional durability of a steering wheel by applying the comprehensive test bed for the mechanical properties of the steering wheel comprises the following steps:
adjusting the cross beam to a proper position, installing a steering wheel on a lifting table through a steering column main shaft, fixing the steering wheel by adopting a first rigid clamp, and applying an axial load through controlling the lifting table to obtain a torsional strength performance test result; and outputting axial loads and tangential loads through the lifting table and the torsion table to obtain a torsion durability test result.
A steering wheel bending durability test method using the steering wheel mechanical property integration test bed, the method comprising:
the lifting platform is lowered to the lowest position, a second rigid fixture is fixed on the platform surface, the steering wheel is installed on the second rigid fixture through the steering column main shaft, and the lifting motor controls the cross beam to move up and down, so that the universal fixture repeatedly applies load to the rim of the steering wheel, and a bending durability test result is obtained.
A multi-station type rim wear resistance test method for a steering wheel, which applies the comprehensive test bed for the mechanical properties of the steering wheel, comprises the following steps:
the cross beam is adjusted to a proper position, the steering wheel is installed on the lifting platform through the steering column main shaft, a plurality of rigid fixtures are fixed on the upper surface of the base, one end of the friction cloth with a test medium is fixed on the rigid fixtures, the other end of the friction cloth is overlapped on the rim of the steering wheel and is connected with a weight to enable the friction cloth to freely droop, the lifting platform is controlled to drive the steering wheel to repeatedly move up and down, the friction cloth rubs the rim of the steering wheel, and the multi-station rim wear resistance test is achieved.
Compared with the prior art, the invention solves the problems of high cost and low efficiency of the mechanical performance test of the steering wheel, and has the following specific beneficial effects:
1. the comprehensive test bed for the mechanical properties of the steering wheel can meet various working condition requirements of high speed, low speed, axial direction and tangential direction, can test the mechanical properties of the horn pressing property and durability of the steering wheel, the abrasion resistance of a wheel rim, static strength, fatigue durability and the like, realizes multiple purposes by one machine, and saves the cost of test equipment and the area of a test field;
2. the comprehensive test bed for the mechanical properties of the steering wheel can be used for carrying out a rim wear resistance test, and provides a multi-station test method.
Drawings
FIG. 1 is a schematic structural view of a comprehensive test bed for mechanical properties of a steering wheel provided by the invention;
FIG. 2 is a schematic diagram of a steering wheel horn operating force and stroke test state provided by the present invention;
FIG. 3 is a schematic view of the torsional strength and torsional durability test status provided by the present invention;
FIG. 4 is a schematic view of a bending durability test state provided by the present invention;
fig. 5 is a schematic diagram of a multi-station type wheel rim wear resistance test state provided by the invention.
Detailed Description
In order to make the technical solutions of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the specification of the present invention, and it should be noted that the following embodiments are only used for better understanding of the technical solutions of the present invention, and should not be construed as limiting the present invention.
Example 1.
The embodiment provides a comprehensive test bed for mechanical properties of a steering wheel, which comprises a longitudinal beam 1, a cross beam 2, a lifting table 3, a torsion table 4, a base 5, a universal fixture 8, a steering column spindle 9, a steering wheel 10, a lifting motor 11, a torsion motor 12 and a speed reducer assembly 13, as shown in fig. 1;
the longitudinal beams 1 are symmetrically fixed on two sides of the base 5, the cross beam 2 is arranged between the two longitudinal beams 1, and the cross beam 2 can linearly move up and down along the longitudinal beams 1;
the longitudinal beam 1 is provided with a limiting mechanism for limiting the cross beam 2;
the universal clamp 8 is fixed on the lower surface of the cross beam 2 and used for mounting a test tool;
the twisting table 4 is arranged on the upper surface of the base 5, the lifting table 3 is fixed on the twisting table 4 and used for driving the steering wheel 10 to move up and down, and the twisting table 4 is used for driving the lifting table 3 to twist axially;
the steering column main shaft 9 is arranged on the lifting platform 3 and used for fixing a steering wheel 10;
the reduction gear assembly 13 includes three sets of reduction mechanisms; the lifting motor 11 respectively controls the beam 2 and the lifting platform 3 to move up and down through two groups of speed reducing mechanisms; the torsion motor 12 controls the torsion table 4 to twist through a set of speed reducing mechanisms.
According to the comprehensive test bed for the mechanical properties of the steering wheel, provided by the invention, the requirements of various working conditions such as high speed, low speed, axial direction and tangential direction can be met by arranging the lifting motor 11, the torsion motor 12 and the speed reducer assembly 13, so that the mechanical property tests such as the pressing property and durability of a horn of the steering wheel, the abrasion resistance of a wheel rim, static strength, fatigue durability and the like can be carried out, the purpose of one machine with multiple purposes is realized, and the purposes of saving the cost of test equipment and the area of a test field are realized.
Example 2.
In this embodiment, to further illustrate embodiment 1, a screw 16 is provided on a side surface of the longitudinal beam 1 contacting with the cross beam 2, and the cross beam 2 is driven by the screw 16 to move the longitudinal beam 1 up and down.
Example 3.
In this embodiment, a sliding groove 6 is provided on the longitudinal beam 1, the limiting mechanism is a limiting lock 7, and the limiting lock 7 slides along the sliding groove 6.
Example 4.
In this embodiment, as a further example of embodiment 3, the number of the limiting locks 7 is 2, and the limiting locks are respectively used for limiting the two moving directions of the cross beam 2.
Example 5.
This embodiment is a further example of embodiment 1, and further includes a work indicator lamp 14 and an emergency stop button 15.
Example 6.
The embodiment is a further example of embodiment 1, and further includes a sensor, a counter, and an integrated control terminal, where the sensor is used to collect a test load value, a displacement value, and a torsion angle value, the counter is used to record the number of times of a cyclic test, and the integrated control terminal is used to record test data and calculate a test result.
Example 7.
The embodiment provides a method for testing the pressing operating force and the stroke of a horn of a steering wheel, which applies the comprehensive test bed for the mechanical property of the steering wheel as in any one of embodiments 1 to 6, and the method comprises the following steps:
as shown in fig. 2, a pressing contact 17 is mounted on the universal fixture 8, the steering wheel 10 is mounted on the lifting table 3 through the steering column main shaft 9, the lifting motor 11 controls the beam 2 to move downwards, so that the pressing contact 17 contacts and presses a horn of the steering wheel 10, and a pressing operation force and a pressing stroke test result are obtained.
Example 8.
The embodiment provides a method for testing the torsional strength and the torsional durability of a steering wheel, which is applied to the comprehensive test bed for the mechanical properties of the steering wheel, as described in any one of embodiments 1 to 6, and the method comprises the following steps:
as shown in fig. 3, the cross beam 2 is adjusted to a proper position, the steering wheel 10 is mounted on the lifting table 3 through the steering column main shaft 9, the steering wheel 10 is fixed by adopting a first rigid clamp 18, and a torsional strength performance test result is obtained by controlling the lifting table 3 to apply an axial load; the axial load and the tangential load are output through the lifting table 3 and the torsion table 4, and the torsion durability test result is obtained.
Example 9.
This embodiment provides a method for testing the bending durability of a steering wheel, using the steering wheel mechanical property integration test stand according to any one of embodiments 1 to 6, the method including:
as shown in fig. 4, the lifting platform 3 is lowered to the lowest position, the second rigid fixture 22 is fixed on the platform surface, the steering wheel 10 is mounted on the second rigid fixture 22 through the steering column spindle 9, the lifting motor 11 controls the cross beam 2 to move up and down, so that the universal fixture 8 repeatedly applies load to the rim of the steering wheel 10, and the bending endurance test result is obtained.
Example 10.
The embodiment provides a multi-station steering wheel rim wear resistance test method, which applies the comprehensive test bed for mechanical properties of the steering wheel as in any one of embodiments 1-6, and the method comprises the following steps:
as shown in fig. 5, the beam 2 is adjusted to a proper position, the steering wheel 10 is installed on the lifting table 3 through the steering column spindle 9, a plurality of rigid clamps 19 are fixed on the upper surface of the base 5, one end of a friction cloth 20 with a test medium is fixed on the rigid clamps 19, the other end of the friction cloth is lapped on the rim of the steering wheel 10 and is connected with a weight 21 to enable the friction cloth to freely droop, the lifting table 3 is controlled to drive the steering wheel 10 to repeatedly move up and down, so that the friction cloth 20 rubs the rim of the steering wheel 10, and the multi-station rim wear resistance test is realized.
The rim wear resistance test of the embodiment realizes a multi-station test, and tests of various media can be carried out together through a plurality of friction cloths with different media, so that the test efficiency is effectively increased, and the development cycle of the steering wheel is greatly shortened.
Claims (10)
1. A comprehensive test bed for mechanical properties of a steering wheel is characterized by comprising longitudinal beams (1), a cross beam (2), a lifting table (3), a torsion table (4), a base (5), a universal fixture (8), a steering column spindle (9), the steering wheel (10), a lifting motor (11), a torsion motor (12) and a speed reducer assembly (13);
the longitudinal beams (1) are symmetrically fixed on two sides of the base (5), the cross beam (2) is arranged between the two longitudinal beams (1), and the cross beam (2) can linearly move up and down along the longitudinal beams (1);
the longitudinal beam (1) is provided with a limiting mechanism for limiting the cross beam (2);
the universal clamp (8) is fixed on the lower surface of the cross beam (2) and used for mounting a test tool;
the torsion table (4) is arranged on the upper surface of the base (5), the lifting platform (3) is fixed on the torsion table (4) and used for driving the steering wheel (10) to move up and down, and the torsion table (4) is used for driving the lifting platform (3) to twist axially;
the steering column main shaft (9) is arranged on the lifting platform (3) and is used for fixing a steering wheel (10);
the speed reducing device assembly (13) comprises three groups of speed reducing mechanisms; the lifting motor (11) respectively controls the cross beam (2) and the lifting platform (3) to move up and down through two groups of speed reducing mechanisms; the torsion motor (12) controls the torsion table (4) to twist through a group of speed reducing mechanisms.
2. The comprehensive test bed for the mechanical property of the steering wheel according to claim 1, characterized in that a screw rod (16) is arranged on one side surface of the longitudinal beam (1) which is in contact with the transverse beam (2), and the transverse beam (2) is driven by the screw rod (16) to move up and down along the longitudinal beam (1).
3. The comprehensive test bed for mechanical properties of the steering wheel according to claim 1 is characterized in that a sliding groove (6) is formed in the longitudinal beam (1), the limiting mechanism is a limiting lock (7), and the limiting lock (7) slides along the sliding groove (6).
4. The comprehensive test bed for mechanical properties of the steering wheel according to claim 3, wherein the number of the limit locks (7) is 2, and the limit locks are respectively used for limiting the upper moving direction and the lower moving direction of the cross beam (2).
5. The mechanical property integration test bench of the steering wheel according to claim 1, further comprising a work indicator lamp (14) and an emergency stop button (15).
6. The comprehensive test bed for mechanical performance of the steering wheel according to claim 1, characterized by further comprising sensors, a counter and an integrated control terminal, wherein the sensors are used for collecting a test load value, a displacement value and a torsion angle value, the counter is used for recording the number of cyclic tests, and the integrated control terminal is used for recording test data and calculating test results.
7. A method for testing the pressing operation force and the stroke of a horn of a steering wheel, which is characterized in that the comprehensive test bed for the mechanical property of the steering wheel according to any one of claims 1-6 is applied, and the method comprises the following steps:
a pressing contact (17) is installed on a universal clamp (8), a steering wheel (10) is installed on a lifting platform (3) through a steering column main shaft (9), and a cross beam (2) is controlled to move downwards through a lifting motor (11), so that the pressing contact (17) is in contact with a horn of the steering wheel (10) and is pressed down, and a pressing control force and a pressing stroke test result are obtained.
8. A method for testing the torsional strength and torsional durability of a steering wheel, which is characterized by applying the mechanical property integration test stand for a steering wheel according to any one of claims 1 to 6, the method comprising:
adjusting the cross beam (2) to a proper position, installing a steering wheel (10) on the lifting table (3) through a steering column main shaft (9), fixing the steering wheel (10) by adopting a first rigid clamp (18), and applying an axial load through controlling the lifting table (3) to obtain a torsional strength performance test result; and outputting an axial load and a tangential load through the lifting table (3) and the twisting table (4) to obtain a twisting durability test result.
9. A steering wheel bending durability test method, characterized in that the steering wheel mechanical property integration test stand according to any one of claims 1 to 6 is applied, the method comprising:
the lifting table (3) is lowered to the lowest, a second rigid clamp (22) is fixed on the table top, a steering wheel (10) is installed on the second rigid clamp (22) through a steering column spindle (9), and the lifting motor (11) controls the cross beam (2) to move up and down, so that the universal clamp (8) repeatedly applies load to the rim of the steering wheel (10), and a bending durability test result is obtained.
10. A steering wheel multi-station rim wear resistance test method, characterized in that the steering wheel mechanical property comprehensive test bed of any one of claims 1 to 6 is applied, and the method comprises the following steps:
the method comprises the steps of adjusting a cross beam (2) to a proper position, installing a steering wheel (10) on a lifting platform (3) through a steering column main shaft (9), fixing a plurality of rigid fixtures (19) on the upper surface of a base (5), fixing one end of a friction cloth (20) with a test medium on the rigid fixtures (19), connecting a weight (21) to the rim of the steering wheel (10) to enable the other end of the friction cloth to freely droop, driving the steering wheel (10) to repeatedly move up and down by controlling the lifting platform (3), enabling the friction cloth (20) to rub the rim of the steering wheel (10), and achieving a multi-station type rim wear resistance test.
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CN101625296A (en) * | 2009-08-06 | 2010-01-13 | 孙仙山 | Multifunctional material mechanics testing machine with functions of tension torsion and pressure torsion |
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2022
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CN101625296A (en) * | 2009-08-06 | 2010-01-13 | 孙仙山 | Multifunctional material mechanics testing machine with functions of tension torsion and pressure torsion |
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