CN210571344U - Lip oil seal muddy water test bed for input end of recirculating ball power steering gear - Google Patents
Lip oil seal muddy water test bed for input end of recirculating ball power steering gear Download PDFInfo
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- CN210571344U CN210571344U CN201921827747.9U CN201921827747U CN210571344U CN 210571344 U CN210571344 U CN 210571344U CN 201921827747 U CN201921827747 U CN 201921827747U CN 210571344 U CN210571344 U CN 210571344U
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Abstract
A test bed for muddy water of a lip oil seal at the input end of a recirculating ball power steering gear relates to detection equipment of an automobile steering gear, and comprises an input end driving device, a steering gear fixing support, an electro-hydraulic servo control valve, a servo hydraulic power source, a steering gear hydraulic power source and an industrial personal computer, wherein the input end driving device is composed of a servo motor, an eccentric wheel and the like; the steering gear is fixed on a fixed support, an input shaft of the steering gear is connected with an input end driving device, a sensor is arranged on an eccentric wheel, a hydraulic power source of the steering gear is connected with the steering gear through a steering gear oil inlet and outlet pipe, a servo hydraulic power source is connected with an electro-hydraulic servo control valve through a servo valve oil inlet and outlet pipe, the electro-hydraulic servo control valve is connected with a steering gear oil inlet pipe, and an industrial personal computer is respectively connected with a servo motor and the electro-hydraulic servo control valve. The utility model discloses when can simulate whole car low-lying road surface, the sand and dust road surface of traveling, the reliability of steering gear input oil blanket is verified in the simulation test of its steering gear input oil blanket in adverse circumstances.
Description
Technical Field
The utility model belongs to a steering gear detection device.
Background
The input end dustproof structure of the recirculating ball power steering gear works in the environments with severe dust and in the regions with much rainwater, such as construction sites, deserts and the like. The influence of adverse circumstances such as external dust, sewage, muddy water will see through input dustproof construction, enters into steering gear oil blanket department, causes the early wearing and tearing of input lip oil blanket to cause the input oil blanket to become invalid, the oil leak failure mode appears. The actual working environment of the whole vehicle is analyzed and found: when an automobile passes through a low-lying road surface, a driver can hold the steering wheel tightly to prevent deviation, and when the automobile runs through the low-lying road surface, tires are subjected to continuous fall and twisting impact, high-frequency left-right oscillation amplitude and muddy water splashing conditions exist, the oscillation amplitude of the tires is transmitted to the steering gear, reaction force is generated, and the steering nut moves up and down on the cylinder body. At this time, the slight change of the steering nut in the steering assembly can instantly generate the positive and negative pressure difference of-0.07-1.47 MPa. The lip seal at the input end of the steering gear now resists two pressure differences: a. negative pressure is generated when the steering nut moves downwards, and the lip-shaped oil seal at the input end of the steering gear deforms inwards in an adsorption manner when the steering nut is subjected to the negative pressure; b. positive pressure is generated when the steering nut moves upwards, and the lip-shaped oil seal at the input end of the steering gear deforms outwards when the positive pressure is applied; the muddy water of outside splashes to the steering gear, and the change in the shape of the lip oil seal of the input end of the steering gear causes the muddy water to permeate into the lip of the oil seal, so that the lip oil seal is polluted by silt, the service life of the lip oil seal of the input end is shortened, and the assembly fails in advance or the muddy water permeates into the assembly, thereby causing assembly failure or failure and oil leakage.
Disclosure of Invention
An object of the utility model is to provide a recirculating ball power steering ware input lip oil blanket muddy water test bench, it is to recirculating ball power steering ware input oil blanket simulation test equipment under adverse circumstances, verifies the muddy water durability of steering ware input oil blanket to thereby foresee product defect in advance and design the improvement, reduce the product quality risk.
In order to achieve the above purpose, the technical scheme of the utility model is that:
the utility model comprises an input end driving device consisting of a servo motor, a driving connecting rod assembly, an eccentric wheel, a driving device mounting plate, a transmission shaft and a spline locking sleeve, a sensor, a steering gear fixing bracket, a frame, a servo valve oil supply power source, a steering gear, an electro-hydraulic servo control valve, a servo valve oil inlet pipe, a servo valve oil outlet pipe, a steering gear oil supply power source, a steering gear oil inlet pipe, a steering gear oil outlet pipe, a throttle valve, an overflow valve II, an overflow valve I and an industrial personal computer; the method is characterized in that: a servo motor, a driving connecting rod assembly, an eccentric wheel, a driving device mounting plate, a transmission shaft and a spline sleeve on the input end driving device are connected in series, and a sensor is arranged on the eccentric wheel; the steering gear is fixed on the steering gear fixing support, the steering gear fixing support is arranged on the rack, and the steering gear input shaft is connected with the transmission shaft through a spline locking sleeve; an oil inlet and an oil outlet of the steering gear are respectively connected with an oil supply power source of the steering gear through an oil inlet pipe of the steering gear and an oil outlet pipe of the steering gear, and an oil outlet pipe of the steering gear is connected with a throttle valve; an oil inlet and an oil outlet of the electro-hydraulic servo control valve are respectively connected with an oil supply power source of the servo valve through a servo valve oil inlet pipe and a servo valve oil outlet pipe, the servo valve oil inlet pipe is connected with the overflow valves 2-15, a steering gear oil inlet pipe is connected with the electro-hydraulic servo control valve, and the industrial personal computer is respectively connected with the servo motor and the electro-hydraulic servo control valve.
The utility model discloses an actively the effect does: the utility model discloses a realize equipment of durable experiment of steering gear input lip oil blanket muddy water, furthest's simulation has finished the adverse circumstances that the car passes through building site low-lying road surface, sand and dust road surface and the operating condition of steering gear, verifies the reliability of steering gear input lip oil blanket.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a side view of fig. 1.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Referring to the attached drawings 1-2, a servo motor 1 of an input end driving device, a driving connecting rod assembly 2, an eccentric wheel 3, a driving device mounting plate 4 and a transmission shaft 5 are connected in series, a sensor is arranged on the eccentric wheel 3, a spline locking sleeve 6 connects a steering gear input shaft with the transmission shaft 5, a steering gear is fixed on a steering gear fixing support 7, the steering gear fixing support 7 is arranged on a rack 8, an oil inlet of the steering gear is connected with a steering gear oil supply power source 11 through a steering gear oil inlet pipe 17 and an overflow valve 12, and an oil outlet of the steering gear is connected with the steering gear oil supply power source 11 through a steering gear oil outlet pipe 9 and a throttle; the steering gear oil outlet pipe 09 is connected with the throttle valve 10; an oil inlet of an electro-hydraulic servo control valve 18 is connected with a servo hydraulic power source 13 through a servo valve oil inlet pipe 16 and an overflow valve II 15, an oil outlet of the electro-hydraulic servo control valve 18 is connected with the servo oil supply power source 13 through a servo valve oil return pipe 14, a steering gear oil inlet pipe 17 is connected with the electro-hydraulic servo control valve 18 in series, and an industrial personal computer 20 is connected with a servo motor 1 and the electro-hydraulic servo control valve 18 respectively.
When the test device works, the electro-hydraulic servo control valve 18 with the input end driving device connected with the oil inlet pipe 17 of the steering gear in series synchronously works under the control of the industrial personal computer 20, and different oil supply stages in the description of the test method are realized. The steering gear fixing support 7 is provided with a steering gear, the steering gear fixing support 7 is arranged on a rack 8, a steering gear input shaft of the steering gear fixing support is connected with a transmission shaft 5 through a spline locking sleeve 6, an eccentric wheel 3 on an input end driving device controls the rotation angle range of the steering gear input shaft, a sensor on the eccentric wheel 3 transmits angle information to an industrial personal computer 20, the industrial personal computer 20 sends an instruction to an electro-hydraulic servo control valve 18 according to the angle position to enable an oil inlet pipe 17 of the steering gear to be connected and disconnected with oil supply at a high speed, an oil outlet pipe 9 of the steering gear is connected with a throttle valve 10, and the oil outlet pressure of the steering gear is.
The steps for carrying out the muddy water durability test of the input end lip oil seal are as follows:
1. the test sample piece diverter is arranged on a diverter fixing bracket 7,
2. a transmission shaft 5 of an input shaft end driving device is connected with the input end of the steering gear by a spline locking sleeve 6,
3. the oil outlet pipe 9 of the steering gear is connected with a throttle valve 10 and finally connected with an oil supply power source 11 of the steering gear,
4. the overflow valve 12 is adjusted to control the oil inlet pressure of an oil supply system of the steering gear,
5. an oil inlet pipe 17 of the steering gear is connected with an electro-hydraulic servo valve control valve 18 and an oil inlet of the steering gear,
6. starting a test device, wherein an input end driving device drives an input shaft of the steering gear to move at a swing angle of 6hz frequency +/-15 degrees, and a pressure fluctuation stage of-0.07-1.47 MPa generated in the steering gear is simulated through time-sharing on-off of an oil inlet pipe of the steering gear and throttling of an oil outlet of the steering gear. The experiment was stopped after the input shaft was filled with 20cc of muddy water per day and the cycling procedure was repeated 100 ten thousand times.
Claims (1)
1. A recirculating ball power steering gear input end lip oil seal muddy water test bed comprises an input end driving device, a sensor, a steering gear fixing support, a machine frame, a servo valve oil supply power source, a steering gear, an electro-hydraulic servo control valve, a servo valve oil inlet pipe, a servo valve oil outlet pipe, a steering gear oil supply power source, a steering gear oil inlet pipe, a steering gear oil outlet pipe, a throttling valve, an overflow valve II, an overflow valve I and an industrial personal computer, wherein the input end driving device is composed of a servo motor, a driving connecting rod assembly, an eccentric wheel, a driving device mounting plate, a transmission shaft and a spline locking sleeve; the method is characterized in that: a servo motor, a driving connecting rod assembly, an eccentric wheel, a driving device mounting plate, a transmission shaft and a spline sleeve on the input end driving device are connected in series, and a sensor is arranged on the eccentric wheel; the steering gear is fixed on the steering gear fixing support, the steering gear fixing support is arranged on the rack, and the input end of the steering gear is connected with the transmission shaft through a spline locking sleeve; an oil inlet and an oil outlet of the steering gear are respectively connected with an oil supply power source of the steering gear through an oil inlet pipe of the steering gear and an oil outlet pipe of the steering gear, and an oil outlet pipe of the steering gear is connected with a throttle valve; an oil inlet and an oil outlet of the electro-hydraulic servo control valve are respectively connected with an oil supply power source of the servo valve through a servo valve oil inlet pipe and a servo valve oil outlet pipe, the servo valve oil inlet pipe is connected with the overflow valve II, a steering gear oil inlet pipe is connected with the electro-hydraulic servo control valve, and the industrial personal computer is respectively connected with the servo motor and the electro-hydraulic servo control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921827747.9U CN210571344U (en) | 2019-10-29 | 2019-10-29 | Lip oil seal muddy water test bed for input end of recirculating ball power steering gear |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921827747.9U CN210571344U (en) | 2019-10-29 | 2019-10-29 | Lip oil seal muddy water test bed for input end of recirculating ball power steering gear |
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| Publication Number | Publication Date |
|---|---|
| CN210571344U true CN210571344U (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921827747.9U Active CN210571344U (en) | 2019-10-29 | 2019-10-29 | Lip oil seal muddy water test bed for input end of recirculating ball power steering gear |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432892A (en) * | 2021-05-31 | 2021-09-24 | 东科克诺尔商用车制动技术有限公司 | High-low temperature test device and test method for power steering gear |
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2019
- 2019-10-29 CN CN201921827747.9U patent/CN210571344U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432892A (en) * | 2021-05-31 | 2021-09-24 | 东科克诺尔商用车制动技术有限公司 | High-low temperature test device and test method for power steering gear |
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