CN105136476A - Vacuum booster online idle stroke detection device - Google Patents
Vacuum booster online idle stroke detection device Download PDFInfo
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- CN105136476A CN105136476A CN201510604577.8A CN201510604577A CN105136476A CN 105136476 A CN105136476 A CN 105136476A CN 201510604577 A CN201510604577 A CN 201510604577A CN 105136476 A CN105136476 A CN 105136476A
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- vacuum booster
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- push rod
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Abstract
The invention relates to the technical field of automobile parts, and provides a vacuum booster online idle stroke detection device. The detection device includes an installing rack which serves to install a vacuum booster and brake pump assembly, an air pump, a vacuum pump and an air pressure detection device. The vacuum booster and the brake pump assembly has a main cylinder oil outlet which is communicated with the air pump via a first ventilation pipe. The main cylinder oil inlet opening is communicated with the air pressure device via a second ventilation pipe. The vacuum booster is communicated with the vacuum pump via a third ventilation pipe. The detection device also includes a displacement detection device which detects displacement of a booster push rod of the vacuum booster. According to the invention, the air pump and the air pressure detection device are added, which spares a liquid storage pot and an entire brake system and reduces the amount of parts for detection and assembling. The detection device has an easy installation method, spares the workflow of cleaning brake fluid after assembling, saves working procedure and increases production efficiency.
Description
Technical field
The invention belongs to technical field of automobile components, be specifically related to the online idle motion checkout equipment of a kind of vacuum booster.
Background technology
The total pump assembly of vacuum booster band brake is widely used in hydraulic pressure class brake system, its vital role is the amplification that power driver and crew being put on pedal carries out certain multiple, mechanical force is converted to the pressure of liquid, thus is passed in detent, produce braking moment and vehicle is stopped.The properties of product of vacuum booster directly have influence on the braking effect of brake system, as the requirement of idle motion, (idle motion refers generally to booster in normal vacuum degree situation, from booster push rod setting in motion play master cylinder oil-in close time, the distance of pushrod movement is idle motion), idle motion is too small, and easily cause pipeline residual voltage, idle motion is excessive, the brake system response time can be caused again to strengthen, therefore control very important to product idle motion.
Existing vacuum booster idle motion detects and is usually connected with whole brake fluid system by vacuum booster, connects liquid storage kettle simultaneously, is installed on comprehensive detection stand together, makes brake fluid enter master cylinder and carry out idle motion detection.This checkout equipment, owing to being comprehensive detection stand, its project detected is more, need completely to build whole stand, whole brake fluid system and liquid storage kettle are all installed on together, parts are more, fixed installation mode is complicated, and also need after detecting to clean brake fluid, operation is various, is unfavorable for online quick detection; Can detect because needs brake fluid enters master cylinder, the brake fluid after detection, often cannot clean up completely, impact the performance of the rubber parts such as leather cup, reduces its serviceable life simultaneously.
Summary of the invention
The object of this invention is to provide the online idle motion checkout equipment of a kind of vacuum booster, by increasing inflating pump and pneumatic test set, save liquid storage kettle and a whole set of brake system, reduce the number of parts detecting assembling, fixed installation mode is simple, and after assembling, save the flow process of cleaning brake fluid, save operation, enhance productivity.
To achieve these goals, the invention provides following technical scheme:
The online idle motion checkout equipment of a kind of vacuum booster, comprise mounting bracket, inflating pump, vacuum pump and pneumatic test set that vacuum booster and brake pump assembly are installed, described vacuum booster is communicated with described inflating pump by the first snorkel with the master cylinder outlet mouth of brake pump assembly, master cylinder oil-in is communicated with described pneumatic test set by the second snorkel, and vacuum booster is communicated with described vacuum pump by the 3rd snorkel; Also comprise the displacement detection device of the displacement of the booster push rod detecting described vacuum booster.
Preferably, also comprise container tank, described master cylinder oil-in is communicated with described container tank by described second snorkel, and described pneumatic test set is communicated with described container tank by the 4th snorkel.
Preferably, described container tank is equipped with the liquid of non-canful, and described second snorkel stretches in described liquid.
Preferably, also comprise electric-motor pump, the motor push rod of described electric-motor pump is resisted against the booster push rod of described vacuum booster.
Preferably, described electric-motor pump is electrically connected with described pneumatic test set.
Preferably, described motor push rod and described booster push rod are plane contact.
Preferably, institute's displacement detection device is displacement transducer.
Preferably, described motor push rod is also connected with baffle plate, and described baffle plate is vertical with the moving direction of described motor push rod, and the contact of institute's displacement sensors is resisted against the side of described baffle plate near described vacuum booster.
Beneficial effect of the present invention is:
The present invention is by increasing inflating pump and pneumatic test set, when idle motion detects, inflating pump works, gas is made to enter master cylinder, pneumatic test set detects the air pressure in master cylinder by master cylinder oil-in, when detecting that air pressure no longer rises, closes inflating pump, vacuum pump, read the distance of booster push rod movement by displacement detection device, be idle motion.This kind of mode does not need to install liquid storage kettle and other braking system part, and structure is simple, easy for installation, and after detecting, reduces brake fluid liquidation procedures, saves and detects operation, increase work efficiency, be convenient to the detection of online idle motion; Meanwhile, due to enter in master cylinder for air, after idle motion detects, gas also can not impact the performance of the rubber parts such as leather cup, and protection rubber part, extends its serviceable life.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of embodiment of vacuum booster provided by the present invention online idle motion checkout equipment.
Reference numeral:
In FIG:
1, electric-motor pump, 2, motor push rod, 3, booster push rod, 4, mounting bracket, 5, vacuum booster and brake pump assembly, 6, inflating pump, 7, the first snorkel, the 8, the 3rd snorkel, 9, vacuum pump, 10, the second snorkel, 11, container tank, the 12, the 4th snorkel, 13, pneumatic test set, 14, displacement transducer, 15, baffle plate.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Please refer to Fig. 1, in a kind of embodiment, the online idle motion checkout equipment of vacuum booster provided by the present invention, comprise mounting bracket 4, inflating pump 6, vacuum pump 9 and pneumatic test set 13 that vacuum booster and brake pump assembly 5 are installed, vacuum booster is communicated with inflating pump 6 by the first snorkel 7 with the master cylinder outlet mouth of brake pump assembly 5, master cylinder oil-in is communicated with pneumatic test set 13 by the second snorkel 10, and vacuum booster is communicated with vacuum pump 5 by the 3rd snorkel 8; Also comprise the displacement detection device of the displacement of the booster push rod 3 detecting vacuum booster.
Above-described embodiment is by increasing inflating pump 6 and pneumatic test set 13, when idle motion detects, inflating pump 6 works, gas is made to enter master cylinder, pneumatic test set 13 detects the air pressure in master cylinder by master cylinder oil-in, when detecting that air pressure no longer rises, closes inflating pump 6, vacuum pump 9, read the distance of booster push rod 3 movement by displacement detection device, be idle motion.This kind of mode does not need to install liquid storage kettle and other braking system part, and structure is simple, easy for installation, and after detecting, reduces brake fluid liquidation procedures, saves and detects operation, increase work efficiency, be convenient to the detection of online idle motion; Meanwhile, due to enter in master cylinder for air, after idle motion detects, gas also can not impact the performance of the rubber parts such as leather cup, and protection rubber part, extends its serviceable life.
The online idle motion checkout equipment of vacuum booster also comprises container tank 11, and master cylinder oil-in is communicated with container tank 11 by the second snorkel 10, and pneumatic test set 13 is communicated with container tank 11 by the 4th snorkel 12.When closing to an end owing to detecting in idle motion, the gas in master cylinder cannot be got rid of, and by increasing container tank 11, the excessive gas in master cylinder can be made to enter container tank, avoid the air pressure in master cylinder too large.Master cylinder oil-in also can be directly communicated with pneumatic test set 13 by the second snorkel 10.
Container tank 11 is equipped with the liquid of non-canful, and the second snorkel 10 stretches in liquid.By stretching in liquid by the second snorkel 10, the gas in master cylinder enters liquid by the second snorkel 10, and liquid surface can produce bubble, and whether the center valve can conveniently observed in master cylinder closes, and is convenient to the control that whole idle motion detects.
The online idle motion checkout equipment of vacuum booster also comprises electric-motor pump 1, and the motor push rod 2 of electric-motor pump 1 is resisted against the booster push rod 3 of vacuum booster.By increasing electric-motor pump 1, facilitating the motion of booster push rod 3, being convenient to control.Booster push rod 3 also can move manually.
Electric-motor pump 1 is electrically connected with pneumatic test set 13.By the connection of electric-motor pump 1 with pneumatic test set 13, directly can be controlled the stop motion of electric-motor pump 1, make control sensitiveer by the signal of pneumatic test set 13, the response time is faster, and then improves the precision of idle motion detection.
Motor push rod 2 and booster push rod 3 are plane contact.By plane contact, increase the contact area of motor push rod 2 pairs of booster push rods 3, and then ensure the stationarity of expulsive force, booster push rod 3 is moved more level and smooth.Motor push rod 2 and booster push rod 3 also can be point cantact or linear contact lay.
Displacement detection device is displacement transducer 14.By the move distance of displacement transducer 14 direct-detection booster push rod 3, the interference of human factor can be reduced, improve the convenience of precision and the operation detected.Displacement detection device also can be dip stick, by measuring the distance of the origin-to-destination of booster push rod 3, obtains idle motion numerical value; Also can be pressure transducer, by the anti-advance of force value from, but this kind of mode, program is loaded down with trivial details.
Motor push rod 2 is also connected with baffle plate 15, and baffle plate 15 is vertical with the moving direction of motor push rod 2, and the contact of displacement transducer 14 is resisted against the side of baffle plate 15 near vacuum booster.By increasing baffle plate 15, the layout of displacement transducer 14 can be facilitated, and then improve the precision of idle motion detection.Displacement transducer 14 also directly can be resisted against the end face of one end of the laminating booster push rod 3 of motor push rod 2, or is resisted against the end face of booster push rod 3 perpendicular to its axis of movement.
Inflating pump 6, vacuum pump 9 are all electrically connected with pneumatic test set 13, to facilitate the closedown directly being controlled inflating pump 6, vacuum pump 9 by the signal of pneumatic test set 13, increase the sensitivity controlled, reduce the response time, and then improve the precision controlled.
Certainly, inflating pump 6, vacuum pump 9 and electric-motor pump 1 all can not be connected with pneumatic test set 13, when pneumatic test set 13 detects that gaseous tension no longer rises, and manual-lock inflating pump 6, vacuum pump 9 and electric-motor pump 1.
Usually, mounting bracket 4, inflating pump 6, vacuum pump 9, electric-motor pump 1 and pneumatic test set 13 are all installed on test platform.
Particularly, the detection method of the online idle motion checkout equipment of above-mentioned vacuum booster, comprises
Step S1: the inside of vacuum pump 9 pairs of vacuum boosters vacuumizes, requires that vacuum level requirements is 98 kPas usually, with consistent with actual vehicle running status, makes testing result closer to real work effect;
Original state, the center valve in master cylinder does not cut out, and master cylinder oil-in is communicated with master cylinder outlet mouth;
Displacement transducer 14 is resisted against baffle plate 15, reads the first data;
Step S2: inflating pump 6 works, gas enters master cylinder along the first snorkel 7, enters container tank 11, can observe in container tank 11 and have bubble by the second snorkel 10; Gas enters pneumatic test set 13 by the 4th snorkel 12, and now the gaseous tension of pneumatic test set 13 constantly rises;
Meanwhile, electric-motor pump 1 works, and electric-motor pump push rod 2 promotes vacuum booster motion, and the speed of motion is usually 0.2 metre per second (m/s);
Step S3: before the center valve of master cylinder does not cut out, gas constantly enters container tank 13, can be confirmed by the bubble situation in container tank 11 and pneumatic test set 13.Bubble, for the ease of observing, can improve the intuitive of detection control;
Step S4: when pneumatic test set 13 detects that gaseous tension no longer rises, by signal feedback to electric-motor pump 1, inflating pump 6 and vacuum pump 9, three closes automatically, now motor push rod 2 and booster push rod 3 all stop motions;
Step S5: the second data reading displacement transducer 14;
Step S6: calculate idle motion=the second data-the first data.
Although the present invention is described in conjunction with above embodiment, but the present invention is not limited to above-described embodiment, and only by the restriction of claim, those of ordinary skill in the art can easily modify to it and change, but do not leave essential idea of the present invention and scope.
Claims (8)
1. the online idle motion checkout equipment of vacuum booster, it is characterized in that, comprise mounting bracket, inflating pump, vacuum pump and pneumatic test set that vacuum booster and brake pump assembly are installed, described vacuum booster is communicated with described inflating pump by the first snorkel with the master cylinder outlet mouth of brake pump assembly, master cylinder oil-in is communicated with described pneumatic test set by the second snorkel, and vacuum booster is communicated with described vacuum pump by the 3rd snorkel; Also comprise the displacement detection device of the displacement of the booster push rod detecting described vacuum booster.
2. the online idle motion checkout equipment of vacuum booster according to claim 1, it is characterized in that, also comprise container tank, described master cylinder oil-in is communicated with described container tank by described second snorkel, and described pneumatic test set is communicated with described container tank by the 4th snorkel.
3. the online idle motion checkout equipment of vacuum booster according to claim 2, it is characterized in that, described container tank is equipped with the liquid of non-canful, and described second snorkel stretches in described liquid.
4. the online idle motion checkout equipment of the vacuum booster according to any one of claim 1-3, is characterized in that, also comprise electric-motor pump, and the motor push rod of described electric-motor pump is resisted against the booster push rod of described vacuum booster.
5. the online idle motion checkout equipment of vacuum booster according to claim 4, it is characterized in that, described electric-motor pump is electrically connected with described pneumatic test set.
6. the online idle motion checkout equipment of vacuum booster according to claim 4, is characterized in that, described motor push rod and described booster push rod are plane contact.
7. the online idle motion checkout equipment of vacuum booster according to claim 4, is characterized in that, institute's displacement detection device is displacement transducer.
8. the online idle motion checkout equipment of vacuum booster according to claim 7, it is characterized in that, described motor push rod is also connected with baffle plate, described baffle plate is vertical with the moving direction of described motor push rod, and the contact of institute's displacement sensors is resisted against the side of described baffle plate near described vacuum booster.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510604577.8A CN105136476A (en) | 2015-09-21 | 2015-09-21 | Vacuum booster online idle stroke detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510604577.8A CN105136476A (en) | 2015-09-21 | 2015-09-21 | Vacuum booster online idle stroke detection device |
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| CN105136476A true CN105136476A (en) | 2015-12-09 |
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| CN201510604577.8A Pending CN105136476A (en) | 2015-09-21 | 2015-09-21 | Vacuum booster online idle stroke detection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106949805A (en) * | 2017-03-13 | 2017-07-14 | 浙江亚太机电股份有限公司 | A kind of clutch master cylinder idle stroke test device and method |
| CN107941525A (en) * | 2017-11-22 | 2018-04-20 | 瑞立集团瑞安汽车零部件有限公司 | A kind of vacuum booster with master cylinder device for detecting performance and its detection method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106949805A (en) * | 2017-03-13 | 2017-07-14 | 浙江亚太机电股份有限公司 | A kind of clutch master cylinder idle stroke test device and method |
| CN107941525A (en) * | 2017-11-22 | 2018-04-20 | 瑞立集团瑞安汽车零部件有限公司 | A kind of vacuum booster with master cylinder device for detecting performance and its detection method |
| CN107941525B (en) * | 2017-11-22 | 2023-09-01 | 温州瑞立科密汽车电子有限公司 | Vacuum booster with brake master cylinder performance detection device and detection method thereof |
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Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Applicant after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Applicant before: Anhui Jianghuai Automotive Co., Ltd. |
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Application publication date: 20151209 |
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