CN114235404A - Steering hub bearing endurance test tool and method - Google Patents
Steering hub bearing endurance test tool and method Download PDFInfo
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- CN114235404A CN114235404A CN202111571954.4A CN202111571954A CN114235404A CN 114235404 A CN114235404 A CN 114235404A CN 202111571954 A CN202111571954 A CN 202111571954A CN 114235404 A CN114235404 A CN 114235404A
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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
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/013—Wheels
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- Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
Abstract
The invention discloses a steering wheel hub bearing endurance test tool and a steering wheel hub bearing endurance test method, which relate to the field of steering wheel hub bearings and comprise tires and the like; the tire is arranged on the tooling base through the tire grounding platform, the steering wheel hub assembly is fixed on the brake assembly through the steering wheel hub, the claw assembly is connected with a steering wheel hub bearing arranged on the steering wheel hub, and the shock absorber is connected with the vertical hydraulic cylinder; the steering wheel hub is connected with a horizontal hydraulic cylinder through a horizontal loading tool; one side of the lower swing arm assembly is fixedly connected with the claw assembly, and the other side of the lower swing arm assembly is fixed on the tool base through the lower swing arm fixing tool. The invention can completely simulate the bearing stress condition of the steering wheel hub when the automobile steers; simulating the angle change of the automobile during left and right steering, namely providing test working conditions of alternate rotation in different directions; because the bearing is inclined relative to the ground, the installation angle of the bearing is inclined, the bearing is taken as a reference system, the self stress of the bearing is continuously changed along with the angular rotation, and the technical scheme of the invention can simulate the stress change.
Description
Technical Field
The invention relates to the field of steering wheel hub bearings, in particular to a steering wheel hub bearing endurance test tool and a steering wheel hub bearing endurance test method.
Background
The conventional steering hub assembly (composed of a steering hub and a steering hub bearing as shown in fig. 2 and 3) is used for providing a rotating shaft for steering the tire (as shown in fig. 1). The steering hub bearing is a generation bearing, and the traditional endurance test method is that a product is installed on a test bed through a tool, constant axial and radial force values are loaded, and meanwhile, the bearing continuously rotates in the same direction at a certain rotating speed.
However, the existing test method has the following defects:
1. in a bearing durability test, the existing rack and tool can only continuously rotate the bearing in the same direction by 360 degrees, and can not provide test working conditions of alternate rotation in different directions (and the rotation angle does not exceed 170 degrees);
2. in the bearing endurance test, the existing rack and tool can only provide a constant loading force value, and cannot provide a test working condition that the loading force value continuously changes along with the rotation of the bearing.
Disclosure of Invention
Compared with the traditional bearing endurance test tool, the test method adopted by the tool is closer to a real vehicle state, and the test accuracy is higher. Through practical verification, the bearing grease leakage phenomenon after the durability of the actual vehicle can be reproduced by the test method, but the phenomenon can not be reproduced by the traditional bearing durability test method.
The purpose of the invention is achieved by the following technical scheme: the steering wheel hub bearing endurance test tool comprises a tire, a steering wheel hub assembly, a claw assembly, a shock absorber, a lower swing arm assembly, a brake assembly, a tire grounding table, a tool base, a lower swing arm fixing tool, a vertical loading tool and a horizontal loading tool; the tire is arranged on the tooling base through the tire grounding table, the steering hub assembly is fixed on the brake assembly through the steering hub, the goat's horn assembly is connected with the steering hub bearing arranged on the steering hub, the shock absorber is fixedly arranged on the goat's horn assembly, the shock absorber is connected with the vertical hydraulic cylinder through the vertical loading tooling, and the vertical hydraulic cylinder is used for applying vertical force to the steering hub assembly; the steering wheel hub is provided with a steering pull rod mounting hole, the steering pull rod mounting hole is connected with a horizontal hydraulic cylinder through a horizontal loading tool, and the horizontal hydraulic cylinder is used for applying horizontal force to the steering wheel hub assembly; one side of the lower swing arm assembly is fixedly connected with the claw assembly, and the other side of the lower swing arm assembly is fixed on the tool base through the lower swing arm fixing tool.
As a further technical scheme, a first ball head of the lower swing arm assembly is fixedly connected with the bottom of the claw assembly, and a second ball head and a third ball head of the lower swing arm assembly are respectively fixed with the tool base through a lower swing arm fixing tool.
As a further technical scheme, the vertical loading tool is connected with a vertical hydraulic cylinder through a vertical connector.
As a further technical scheme, the horizontal loading tool is connected with the horizontal hydraulic cylinder through a horizontal connector.
The test method adopting the steering hub bearing endurance test tool comprises the following steps:
1) connecting and fixing a first ball head of the lower swing arm assembly and the bottom of the claw assembly, and fixing a second ball head and a third ball head of the lower swing arm assembly and a tool base through a lower swing arm fixing tool respectively;
2) applying grease between the tire and the tire ground table to reduce friction;
3) connecting a vertical connector of a vertical loading tool with a vertical hydraulic cylinder, and connecting a horizontal connector of a horizontal loading tool with a horizontal hydraulic cylinder;
4) setting the working load and the working time of the vertical hydraulic cylinder and the horizontal hydraulic cylinder, starting the vertical hydraulic cylinder and loading a vertical force for simulating a longitudinal force value borne by a shock absorber in real vehicle, and simultaneously starting the horizontal hydraulic cylinder and loading a horizontal force, wherein the horizontal hydraulic cylinder reciprocates along the horizontal direction and is used for simulating the reciprocating motion of a steering pull rod in real vehicle;
5) stopping the test when the test time reaches the working time set in the step 4);
6) and taking down the steering hub assembly, cleaning the steering hub assembly, measuring the weight of the steering hub assembly after the test to be M1, determining the difference between the weight M0 of the steering hub assembly before the test and the weight M1 after the test to be the grease leakage amount of the steering hub assembly in the test process, comparing the obtained grease leakage amount with the total grease injection amount of the steering hub assembly, and judging whether the steering hub assembly is qualified.
As a further technical solution, in the step 2), the air blowing device is used to face a position between the tire and the tire ground-contacting table, so as to accelerate heat dissipation.
As a further technical scheme, in the step 4), the working time of the vertical hydraulic cylinder and the horizontal hydraulic cylinder is one cycle of 96h, and six cycles are continued; in each cycle, the vertical hydraulic cylinder keeps 72 hours under 1.0 time of full load wheel load, 21.6 hours under 1.5 times of full load wheel load and 2.4 hours under 0.7 time of full load wheel load, meanwhile, the reciprocating frequency of the horizontal hydraulic cylinder is 0.5Hz, and the working time of the horizontal hydraulic cylinder is consistent with that of the vertical hydraulic cylinder.
As a further technical scheme, the reciprocating distance of the horizontal hydraulic cylinder is based on the fact that the tire reaches the maximum steering angle.
As a further technical scheme, in the step 6), if the grease leakage amount of the steering wheel hub assembly is less than or equal to 5% of the total grease injection amount, the steering wheel hub assembly is judged to be qualified; and if the grease leakage amount of the steering wheel hub assembly is more than 5% of the total grease injection amount, judging that the steering wheel hub assembly is unqualified.
The invention has the beneficial effects that: the bearing stress condition of the steering wheel hub during the steering of the automobile can be completely simulated; simulating the angle change of the automobile during left-right steering, namely providing the test working condition of alternate rotation in different directions (the rotation angle does not exceed 170 degrees); because the bearing is inclined relative to the ground, the installation angle of the bearing is inclined, the bearing is taken as a reference system, the self stress of the bearing is continuously changed along with the angular rotation, and the technical scheme of the invention can simulate the stress change.
Drawings
FIG. 1 is a schematic view of the position of a steering wheel hub assembly on a vehicle chassis.
FIG. 2 is a schematic view of a steering hub assembly.
FIG. 3 is a cross-sectional view of a steering hub assembly construction.
Fig. 4 is a schematic view of an installation structure of the steering hub assembly and the test tool.
Description of reference numerals: the device comprises a tire 1, a steering wheel hub assembly 2, a steering wheel hub 21, a steering pull rod mounting hole 211, a steering wheel hub bearing 22, a goat's horn assembly 3, a shock absorber 4, a lower swing arm assembly 5, a first ball head 51, a second ball head 52, a third ball head 53, a brake assembly 6, a tire grounding platform 7, a tooling base 8, a lower swing arm fixing tooling 9, a vertical loading tooling 10, a vertical connector 11, a horizontal loading tooling 12 and a horizontal connector 13.
Detailed Description
The invention will be described in detail below with reference to the following drawings:
example (b): as shown in fig. 4, the endurance test tool for the steering hub bearing comprises a tire 1, a steering hub assembly 2, a claw assembly 3, a shock absorber 4, a lower swing arm assembly 5, a brake assembly 6, a tire grounding table 7, a tool base 8, a lower swing arm fixing tool 9, a vertical loading tool 10 and a horizontal loading tool 12; the tire 1 is arranged on a tooling base 8 through a tire grounding platform 7, a steering wheel hub assembly 2 is fixed on a brake assembly 6 through a steering wheel hub 21, a goat's horn assembly 3 is connected with a steering wheel hub bearing 22 arranged on the steering wheel hub 21, a shock absorber 4 is fixedly arranged on the goat's horn assembly 3, a vertical loading tooling 10 and a vertical connector 11 are welded on the shock absorber 4 and used for connecting a vertical hydraulic cylinder, and the vertical hydraulic cylinder is used for applying vertical force to the steering wheel hub assembly 2; a steering rod mounting hole 211 is formed in the steering wheel hub 21, the steering rod mounting hole 211 is connected with a horizontal hydraulic cylinder through a horizontal loading tool 12 and a horizontal connector 13, and the horizontal hydraulic cylinder is used for applying horizontal force to the steering wheel hub assembly 2; one side of the lower swing arm assembly 5 is fixedly connected with the claw assembly 3, and the other side of the lower swing arm assembly 5 is fixed on the tool base 8 through the lower swing arm fixing tool 9. The first ball head 51 of the lower swing arm assembly 5 is fixedly connected with the bottom of the claw assembly 3, and the second ball head 52 and the third ball head 53 of the lower swing arm assembly 5 are respectively fixed with the tool base 8 through a lower swing arm fixing tool 9.
The test method adopting the steering hub bearing endurance test tool comprises the following steps:
1) connecting and fixing a first ball head 51 of the lower swing arm assembly 5 with the bottom of the claw assembly 3, and fixing a second ball head 52 and a third ball head 53 of the lower swing arm assembly 5 with a tool base 8 through a lower swing arm fixing tool 9 respectively;
2) lubricating grease is smeared between the tire 1 and the tire grounding table 7 to reduce friction, and the tire 1 does not directly contact the tooling base 8 but contacts the tire grounding table 7 because the lowest height of a horizontal hydraulic cylinder of the test equipment is prevented from failing to meet the test position; preferably, the air blowing device is used toward a position between the tire 1 and the tire ground stage 7, thereby accelerating heat dissipation;
3) connecting a vertical connector 11 of a vertical loading tool 10 with a vertical hydraulic cylinder, and connecting a horizontal connector 13 of a horizontal loading tool 12 with a horizontal hydraulic cylinder;
4) setting the working load and the working time of the vertical hydraulic cylinder and the horizontal hydraulic cylinder, wherein in the embodiment, the working time of the vertical hydraulic cylinder and the working time of the horizontal hydraulic cylinder are respectively 96h as one cycle, and six cycles are continued; in each cycle, the vertical hydraulic cylinder keeps 72 hours under the full load wheel load of 1.0 time, 21.6 hours under the full load wheel load of 1.5 times and 2.4 hours under the full load wheel load of 0.7 time, meanwhile, the frequency of the reciprocating motion of the horizontal hydraulic cylinder is 0.5Hz, the reciprocating motion distance is accurate to enable the tire 1 to reach the maximum steering angle (the rotating angle does not exceed 170 degrees), and the working time of the horizontal hydraulic cylinder is consistent with that of the vertical hydraulic cylinder. Starting a vertical hydraulic cylinder and loading a vertical force for simulating a longitudinal force value borne by a shock absorber 4 in a real vehicle, and simultaneously starting a horizontal hydraulic cylinder and loading a horizontal force, wherein the horizontal hydraulic cylinder reciprocates along the horizontal direction and is used for simulating the reciprocating motion of a steering pull rod in the real vehicle, so that the tire 1 is driven to reciprocate on a tire grounding platform 7;
5) when the test time reaches the working time set in the step 4), stopping the test, and visually checking whether grease leaks from two exposed end surfaces of a steering hub bearing 22 in the steering hub 21 or not, wherein no grease leaks from the inner ring of the bearing to the sealing ring;
6) taking down the steering hub assembly 2, cleaning the steering hub assembly 2, measuring the weight of the steering hub assembly 2 after the test to be M1, wherein the difference between the weight M0 of the steering hub assembly 2 before the test and the weight M1 after the test is the grease leakage amount of the steering hub assembly 2 in the test process, comparing the obtained grease leakage amount with the total grease filling amount of the steering hub assembly 2, and if the grease leakage amount of the steering hub assembly 2 is less than or equal to 5% of the total grease filling amount, judging that the steering hub assembly 2 is qualified; and if the grease leakage amount of the steering hub assembly 2 is greater than 5% of the total grease injection amount, judging that the steering hub assembly 2 is unqualified.
Compared with the traditional bearing durability test method, the bearing durability test method is closer to the real vehicle state, and the test accuracy is higher. Through practical verification, the bearing grease leakage phenomenon can be reproduced after the vehicle is durable in the test, and the phenomenon can not be reproduced by the traditional durable method.
It should be understood that equivalent substitutions and changes to the technical solution and the inventive concept of the present invention should be made by those skilled in the art to the protection scope of the appended claims.
Claims (9)
1. The utility model provides a turn to wheel hub bearing endurance test frock which characterized in that: the device comprises a tire (1), a steering hub assembly (2), a claw assembly (3), a shock absorber (4), a lower swing arm assembly (5), a brake assembly (6), a tire grounding table (7), a tooling base (8), a lower swing arm fixing tooling (9), a vertical loading tooling (10) and a horizontal loading tooling (12); the tire (1) is arranged on a tooling base (8) through a tire grounding table (7), a steering wheel hub assembly (2) is fixed on a brake assembly (6) through a steering wheel hub (21), a goat's horn assembly (3) is connected with a steering wheel hub bearing (22) arranged on the steering wheel hub (21), a shock absorber (4) is fixedly installed on the goat's horn assembly (3), the shock absorber (4) is connected with a vertical hydraulic cylinder through a vertical loading tooling (10), and the vertical hydraulic cylinder is used for applying vertical direction force to the steering wheel hub assembly (2); a steering pull rod mounting hole (211) is formed in the steering wheel hub (21), the steering pull rod mounting hole (211) is connected with a horizontal hydraulic cylinder through a horizontal loading tool (12), and the horizontal hydraulic cylinder is used for applying horizontal force to the steering wheel hub assembly (2); one side of the lower swing arm assembly (5) is fixedly connected with the claw assembly (3), and the other side of the lower swing arm assembly (5) is fixed on a tool base (8) through a lower swing arm fixing tool (9).
2. The steering hub bearing endurance test tooling of claim 1, wherein: a first ball head (51) of the lower swing arm assembly (5) is fixedly connected with the bottom of the claw assembly (3), and a second ball head (52) and a third ball head (53) of the lower swing arm assembly (5) are respectively fixed with the tool base (8) through a lower swing arm fixing tool (9).
3. The steering hub bearing endurance test tooling of claim 1, wherein: the vertical loading tool (10) is connected with a vertical hydraulic cylinder through a vertical connector (11).
4. The steering hub bearing endurance test tooling of claim 1, wherein: and the horizontal loading tool (12) is connected with a horizontal hydraulic cylinder through a horizontal connector (13).
5. A test method of the steering hub bearing durability test tool according to any one of claims 1 to 4 is characterized in that: the method comprises the following steps:
1) a first ball head (51) of a lower swing arm assembly (5) is fixedly connected with the bottom of a claw assembly (3), and a second ball head (52) and a third ball head (53) of the lower swing arm assembly (5) are respectively fixed with a tool base (8) through a lower swing arm fixing tool (9);
2) applying grease between the tyre (1) and the tyre grounding table (7) to reduce friction;
3) connecting a vertical connector (11) of a vertical loading tool (10) with a vertical hydraulic cylinder, and connecting a horizontal connector (13) of a horizontal loading tool (12) with a horizontal hydraulic cylinder;
4) setting the working load and the working time of the vertical hydraulic cylinder and the horizontal hydraulic cylinder, starting the vertical hydraulic cylinder and loading a vertical force for simulating a longitudinal force value borne by the shock absorber (4) in real vehicle, and simultaneously starting the horizontal hydraulic cylinder and loading a horizontal force, wherein the horizontal hydraulic cylinder reciprocates along the horizontal direction and is used for simulating the reciprocating motion of a steering pull rod in real vehicle;
5) stopping the test when the test time reaches the working time set in the step 4);
6) and taking down the steering hub assembly (2), cleaning the steering hub assembly, measuring the weight of the steering hub assembly (2) after the test to be M1, determining the difference between the weight M0 of the steering hub assembly (2) before the test and the weight M1 after the test to be the grease leakage amount of the steering hub assembly (2) in the test process, and comparing the obtained grease leakage amount with the total grease injection amount of the steering hub assembly (2) to judge whether the steering hub assembly (2) is qualified.
6. The test method according to claim 5, characterized in that: in the step 2), the air blowing device is used for facing the position between the tire (1) and the tire grounding table (7), so that the heat dissipation is accelerated.
7. The test method according to claim 5, characterized in that: in the step 4), the working time of the vertical hydraulic cylinder and the horizontal hydraulic cylinder is one cycle of 96h, and six cycles are continued; in each cycle, the vertical hydraulic cylinder keeps 72 hours under 1.0 time of full load wheel load, 21.6 hours under 1.5 times of full load wheel load and 2.4 hours under 0.7 time of full load wheel load, meanwhile, the reciprocating frequency of the horizontal hydraulic cylinder is 0.5Hz, and the working time of the horizontal hydraulic cylinder is consistent with that of the vertical hydraulic cylinder.
8. The assay method of claim 7, wherein: the reciprocating distance of the horizontal hydraulic cylinder is based on the maximum steering angle of the tire (1).
9. The test method according to claim 5, characterized in that: in the step 6), if the grease leakage amount of the steering hub assembly (2) is less than or equal to 5% of the total grease injection amount, judging that the steering hub assembly (2) is qualified; and if the grease leakage amount of the steering wheel hub assembly (2) is more than 5% of the total grease injection amount, judging that the steering wheel hub assembly (2) is unqualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111571954.4A CN114235404A (en) | 2021-12-21 | 2021-12-21 | Steering hub bearing endurance test tool and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111571954.4A CN114235404A (en) | 2021-12-21 | 2021-12-21 | Steering hub bearing endurance test tool and method |
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| Publication Number | Publication Date |
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| CN114235404A true CN114235404A (en) | 2022-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111571954.4A Pending CN114235404A (en) | 2021-12-21 | 2021-12-21 | Steering hub bearing endurance test tool and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116558809A (en) * | 2023-07-10 | 2023-08-08 | 豫北凯斯特隆（新乡）汽车科技有限公司 | Steering intermediate shaft endurance test platform |
-
2021
- 2021-12-21 CN CN202111571954.4A patent/CN114235404A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116558809A (en) * | 2023-07-10 | 2023-08-08 | 豫北凯斯特隆（新乡）汽车科技有限公司 | Steering intermediate shaft endurance test platform |
| CN116558809B (en) * | 2023-07-10 | 2023-09-26 | 豫北凯斯特隆（新乡）汽车科技有限公司 | Steering intermediate shaft endurance test platform |
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