CN103926072A - Endurance test device for drum brake under fluctuation pressure and test method thereof - Google Patents
Endurance test device for drum brake under fluctuation pressure and test method thereof Download PDFInfo
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- CN103926072A CN103926072A CN201410199367.0A CN201410199367A CN103926072A CN 103926072 A CN103926072 A CN 103926072A CN 201410199367 A CN201410199367 A CN 201410199367A CN 103926072 A CN103926072 A CN 103926072A
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- drum brake
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- fluctuation pressure
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Abstract
The invention discloses an endurance test device for a drum brake under fluctuation pressure. The endurance test device is specially used for testing a brake cylinder in a vehicle drum brake. An oil system comprises a brake main cylinder, an oil storage tank, a pressure meter and a Bundy tube. An electric control system comprises a pneumatic FRL unit, an electromagnetic change-over valve, a counter, a timer, a voltage regulating power supply and an air switch. The endurance test device for the drum brake under the fluctuation pressure is simple in structure and convenient to install and detach, and lightens work difficulty of testers. By means of the test method, real vehicle environment can be simulated to test endurance of the brake cylinder in the vehicle drum brake. By means of the device, the endurance test method of the vehicle drum brake can be verified, and reliable bases are provided for design of the brake cylinder in the vehicle drum brake.
Description
Technical field
The invention belongs to auto parts and components technical field of measurement and test, relate in particular to durable device and test method thereof under automobile drum brake fluctuation pressure.
Background technology
The quality of the overall performance of the performance quality of automotive brake to auto brake system has material impact, and it directly has influence on the security performance of car load.
Drum brake is the key position of brake system of car, and drum brake is mainly made up of parts such as base plate, brake drum, brake-shoe, wheel cylinder, retracing spring, register pins.In the time of braking, wheel cylinder piston promotes brake-shoe compressing brake drum, and brake drum is subject to friction eceleration, forces wheel to stop operating.The quality of wheel cylinder directly affects brake efficiency, and under drum brake fluctuation pressure, long duration test is mainly the performance of examination wheel cylinder.
Number of patent application is 2011104187788.4, and name is called a kind of drum brake clearance self-regulating mechanism endurance test bed, and its disclosed technical scheme is by the permanance of the clearance self-regulating mechanism between durability experiment platform test brake drum and brake-shoe.Different from the technical scheme of patent of the present invention.
At present, domestic not this special purpose test equipment is tested, and along with the development of auto industry and auto manufacturing technology, vehicle is constantly updated, the continuous scheme of designed vehicle is improved, and long duration test and the comparative analysis of carrying out wheel cylinder also show its importance especially.
Summary of the invention
In order to address the above problem, the invention provides durability test apparatus under automobile drum brake fluctuation pressure.
Durability test apparatus under drum brake fluctuation pressure of the present invention, technical scheme is as follows:
Durable device under automobile drum brake fluctuation pressure, is made up of oil system and electric control system two parts.
Described oil hydraulic system part comprises master cylinder, storage tank, tensimeter and Bandaid pipe.Cylinder take-off lever is connected with the piston rod of master cylinder, and the motion of cylinder take-off lever makes master cylinder work; Master cylinder is communicated with storage tank, and storage tank provides brake fluid for master cylinder; Described master cylinder is connected by Bandaid pipe with drum brake to be measured.The data that show by tensimeter, the movement travel of adjusting cylinders and frequency.
Described electric control system comprises pneumatic triple piece, electromagnetic change-over valve, voltage controller power source and air switch, the connection compressed air inlet, one end of described pneumatic triple piece, the other end is connected with the air intake opening of electromagnetic change-over valve, and electromagnetic change-over valve connects cylinder, and cylinder is provided with speed control valve; Described counter, timer and air switch are connected with the control mouth of voltage controller power source and solenoid valve.
Drum brake to be measured is arranged in environmental cabinet, and cylinder matches with oil hydraulic system, and electrical control connects cylinder and speed control valve.
Under drum brake fluctuation pressure of the present invention, durability test apparatus test exemplar installment and debugging technical scheme is as follows:
Described test exemplar drum brake to be measured is arranged in environmental cabinet, be connected with tensimeter by Bandaid pipe, the tensimeter other end is connected with master cylinder oil-out, storage tank is connected with master cylinder and brake fluid is provided, and the center line of master cylinder is corresponding with cylinder output terminal, meets the requirement that exemplar is applied to test pressure, cylinder can carry out the adjustment of left and right according to the length of test demand on testing table, finally be bolted, it is simple in structure, reliable operation.
The test method of durable device under automobile drum brake fluctuation pressure, its technical scheme is as follows:
Installation test exemplar drum brake to be measured on described test unit, adjusts test exemplar in the position of environmental cabinet inside, reaches fastening after testing requirements, checks the sealing situation of each joint, open source of the gas, require to regulate pressure according to correlation technique, with pneumatic triple piece by air pressure adjustment to the required air pressure of test, as do not reach requirement, can also move horizontally cylinder fixing, by testing crew hand control switch, pressurized air enters cylinder, make the motion of cylinder take-off lever, cylinder take-off lever contacts with master cylinder, brake fluid in storage tank is full of in test sample chamber, observe tensimeter, reach after testing requirements, make its action and durability times is set, complete after the durability times of setting, get back to original state, close source of the gas and power supply, dismounting test exemplar, off-test.
Under automobile drum brake fluctuation pressure of the present invention, durability test apparatus is the performance test stand of gas-electricity one system, the oil hydraulic system and the electrical control that adopt, test unit is compact to design, simple in structure, installation, convenient disassembly, safe and reliable, can realize automatic detection, alleviate artificial labour intensity.
In addition, adopted adjustable oil pressure to make this test unit applicable to durable test under the automobile drum brake fluctuation pressure of different model.Utilize apparatus of the present invention to verify analytic method durable under automobile drum brake fluctuation pressure, for the innovative design of automobile drum brake provides reliable foundation.
Brief description of the drawings
Fig. 1 is durability test apparatus principle schematic under automobile drum brake fluctuation pressure of the present invention;
Fig. 2 is durability test apparatus structural representation under automobile drum brake fluctuation pressure of the present invention;
In figure: 1 cylinder, 2 timer sum counters, 3 master cylinders, 4 storage tank, 5 tensimeters, 6 Bandaid pipes, 7 environmental cabinets, 8 drum brakes, 9 start buttons, 10 always stop button, 11 voltage controller power sources, 12 electromagnetic change-over valves, 13 pneumatic triple pieces.
Embodiment
Below in conjunction with accompanying drawing, by the description to embodiment, principle of work and the method for operating etc. of position and interconnected relationship, various piece between structure to the involved all parts of technique scheme of the present invention, various piece, further detailed explanation, can help those skilled in the art that inventive concept of the present invention, technical scheme are had more complete, deep and understood accurately.
As shown in Figure 1, durable device under automobile drum brake fluctuation pressure of the present invention, is made up of oil system and electric control system two parts.Power supply is connected with source of the gas by electromagnetic steering valve, and electromagnetic steering valve connects cylinder simultaneously, and cylinder action is in oil system, and oil system acts on drum brake to be measured, reaches test objective.Meanwhile, counter is connected with electromagnetic steering valve with timer.
As shown in Figure 2, described oil hydraulic system comprises master cylinder 3, storage tank 4, tensimeter 5, Bandaid pipe 6, drum brake 8.
Storage tank 4 is connected with master cylinder 3, and master cylinder 3 oil circuits are connected with Bandaid pipe 6 and tensimeter 5, and tensimeter 5 use Bandaid pipes 6 are connected with drum brake 8, and tensimeter 5 shows the pressure of fluid, and drum brake 8 is fixed in environmental cabinet 7.
Described electric control system comprises pneumatic triple piece 13, electromagnetic change-over valve 12, counter and timer 2, voltage controller power source 11, start button 9 and always stops button 10, described pneumatic triple piece 13 connection compressed air inlets, one end, the other end is connected with the air intake opening of electromagnetic change-over valve 12, electromagnetic change-over valve 12 control linkage cylinders 1, on cylinder 1, speed control valve is housed, described counter and timer 2 and start button 9 with always stop button 10 and be connected with the control mouth of voltage controller power source 11 and solenoid directional control valve 12.
Under drum brake fluctuation pressure of the present invention, the step of the test method of durability test apparatus is as follows:
Step 1: drum brake 8 to be measured is fixed on to environmental cabinet 7 inside;
Step 2: open source of the gas, according to correlation technique requirement, utilize pneumatic triple piece 13 that air pressure adjustment is arrived to the required air pressure of cylinder 1;
Step 3: by testing crew hand control switch, pressurized air enters cylinder 1, moves cylinder take-off lever repeatedly;
Step 4: the moving main cylinder piston-rod of cylinder output masthead compacting, the brake fluid in storage tank is full of in drum brake to be measured 8 chambeies, observe tensimeter, reach testing requirements pressure;
Step 5: the sealing situation that checks each joint;
Step 6: open environmental cabinet 7, test desired high temperature, low temperature and the time is set;
Step 7: timer sum counter 2 arranges respectively frequency and durability times;
Step 8: after off-test, revert to virgin state, close source of the gas and line related.
Claims (5)
1. durability test apparatus under drum brake fluctuation pressure, it is made up of oil hydraulic system and electric control system, it is characterized in that, and described electric control system comprises pneumatic triple piece, electromagnetic change-over valve, voltage controller power source and air switch; The connection compressed air inlet, one end of described pneumatic triple piece, the other end is connected with the air intake opening of electromagnetic change-over valve, and electromagnetic change-over valve connects cylinder, and cylinder is provided with speed control valve;
Described oil hydraulic system comprises master cylinder, storage tank, tensimeter and Bandaid pipe; Cylinder take-off lever is connected with the piston rod of master cylinder; Master cylinder is communicated with storage tank, and storage tank provides brake fluid for master cylinder; Described master cylinder is connected by Bandaid pipe with drum brake to be measured.
2. durability test apparatus under drum brake fluctuation pressure according to claim 1, is characterized in that: described drum brake to be measured is fixed in environmental cabinet.
3. durability test apparatus under drum brake fluctuation pressure according to claim 1, is characterized in that: described tensimeter connects between master cylinder and drum brake by Bandaid pipe.
4. durability test apparatus under drum brake fluctuation pressure according to claim 1, is characterized in that: described counter, timer, air switch are connected with the control mouth of voltage controller power source and solenoid valve.
5. long duration test method under drum brake fluctuation pressure, is characterized in that, described step is as follows:
Step 1: drum brake to be measured is fixed on to environmental cabinet inside;
Step 2: open source of the gas, according to correlation technique requirement, utilize pneumatic triple piece that air pressure adjustment is arrived to the required air pressure of cylinder;
Step 3: by testing crew hand control switch, pressurized air enters cylinder, moves cylinder take-off lever repeatedly;
Step 4: the moving main cylinder piston-rod of cylinder output masthead compacting, the brake fluid in storage tank is full of in drum brake to be measured chamber, observe tensimeter, reach testing requirements pressure;
Step 5: the sealing situation that checks each joint;
Step 6: open environmental cabinet, test desired high temperature, low temperature and the time is set;
Step 7: timer sum counter arranges respectively frequency and durability times;
Step 8: after off-test, revert to virgin state, close source of the gas and line related.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410199367.0A CN103926072A (en) | 2014-05-12 | 2014-05-12 | Endurance test device for drum brake under fluctuation pressure and test method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410199367.0A CN103926072A (en) | 2014-05-12 | 2014-05-12 | Endurance test device for drum brake under fluctuation pressure and test method thereof |
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| CN103926072A true CN103926072A (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410199367.0A Pending CN103926072A (en) | 2014-05-12 | 2014-05-12 | Endurance test device for drum brake under fluctuation pressure and test method thereof |
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| CN (1) | CN103926072A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107966292A (en) * | 2017-12-29 | 2018-04-27 | 珠海格莱利摩擦材料有限公司 | It is a kind of can simulated environment brake-shoe pressure control detecting system and technique |
| CN108318342A (en) * | 2017-01-17 | 2018-07-24 | 上海胜僖汽车配件有限公司 | A kind of device for automobile oil damp control valve voltage-withstand test |
| CN111795813A (en) * | 2020-05-22 | 2020-10-20 | 上海汽车制动系统有限公司 | Fatigue endurance test method for disc brake |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108318342A (en) * | 2017-01-17 | 2018-07-24 | 上海胜僖汽车配件有限公司 | A kind of device for automobile oil damp control valve voltage-withstand test |
| CN107966292A (en) * | 2017-12-29 | 2018-04-27 | 珠海格莱利摩擦材料有限公司 | It is a kind of can simulated environment brake-shoe pressure control detecting system and technique |
| CN111795813A (en) * | 2020-05-22 | 2020-10-20 | 上海汽车制动系统有限公司 | Fatigue endurance test method for disc brake |
| CN111795813B (en) * | 2020-05-22 | 2022-04-05 | 上海汽车制动系统有限公司 | Fatigue endurance test method for disc brake |
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Application publication date: 20140716 |