CN102673547B - Running-in method of full trailer drum brake - Google Patents
Running-in method of full trailer drum brake Download PDFInfo
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- CN102673547B CN102673547B CN201210160376.XA CN201210160376A CN102673547B CN 102673547 B CN102673547 B CN 102673547B CN 201210160376 A CN201210160376 A CN 201210160376A CN 102673547 B CN102673547 B CN 102673547B
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Abstract
The invention discloses a running-in method of a full trailer drum brake. The method comprises the following steps of: detaching a water discharging device from a gas storage bottle; positioning and connecting a pressure adjusting device on the gas storage bottle or directly connecting the pressure adjusting device on a pipeline according to actual requirements; connecting a gas supply connector of a tractor and the gas supply connector of a trailer, and carrying out gas supply for 0.2-0.3 Mpa and cutting off; mounting a probe of a digital thermometer on the outer surface of a wheel hub; controlling a drawing speed by the tractor and adjusting an air pressure to a suitable braking pressure through the pressure adjusting device; and after drawing and running in, reducing the temperature of the outer surface of the wheel hub to a room temperature, detecting the size of a wheel braking moment and a moment difference of left and right wheels. The running-in method is simple and high in efficiency, effectively reduces the production cost and reduces the damages to parts when the drum brake is used for carrying out running-in. According to the running-in method, the wheel hub and a brake shoe are conveniently replaced and the full trailer drum brake is subjected to the running-in.
Description
Technical field
The present invention relates to the job operation of automobile component, be specifically related to a kind of break-in method of independent trailer drum brake mechanism.
Background technology
Civilian special-purpose independent trailer and military independent trailer not only will have the ability of running at high speed, its speed >=80km/h, and want safety traffic in the situation of road conditions condition very severe in the wild, so it must possess very high deceleration and stopping performance, as the size of wheel braking moment, left and right wheels torque difference, subtract acceleration/accel, stopping distance, off-track amount and have extremely strict requirement.Independent trailer generally adopts drum brake mechanism, so drum brake mechanism has extremely important effect to tractor truck and independent trailer brake safe performance.Generally drum brake mechanism need to reach wheel hub and brake facing has larger area of contact by wheel hub break-in, and guarantee vehicle testing line carries out by traction, carrying out road conditions examination on deceleration and stopping performance inspection and road.
The conventional break-in method of wheel hub of drum brake mechanism is as follows:
A) by specialized equipment, carry out break-in, improved break-in efficiency, shortened the break-in cycle, but this equipment investment is large, maintaining cost is high, is applicable to producing in enormous quantities.If when applying unit needs repairing replacing brake shoes and wheel hub, just can not carry out break-in to the wheel hub after changing without this equipment.
B) military independent trailer is generally the production of many kinds, small lot or even single-piece, and its structural change is large, without the wheel hub running-in device of special-purpose drum brake mechanism.Conventionally adopt the normal brake break-in of travelling of drawing, this break-in is large to the wheel hub of tractor truck, brake shoes and wear on tyres, the torque difference of wayward break-in intensity and left and right wheels, and waste a large amount of energy.
Summary of the invention
Goal of the invention of the present invention is to provide a kind of break-in method of independent trailer drum brake mechanism, and the method is simple to operate, efficiency is high, power consumption is few, and break-in cost is low.
The break-in method of a kind of independent trailer drum brake mechanism of the present invention, break-in utilizes the single, double pipeline pneumatic control system of existing independent trailer to carry out, and its step is as follows:
The first step, installs regulator; The jettison gear being located on gaholder is pulled down, then regulator is located by connecting on gaholder; Or do not pull down the jettison gear being located on gaholder, directly regulator is connected on pipeline;
Second step, to independent trailer air feed; With the air connector of tractor truck, be connected and carry out air feed with the first air connector on independent trailer, gaholder air pressure disconnects after reaching 0.2～0.3Mpa;
The 3rd step, installs digital thermometer; The probe of digital thermometer is arranged on Lun Grains outside face, by digital thermometer read-out reading temperature data;
The 4th step, adjusts brake pressure; By tractor truck, control haulage speed, by regulator, the air pressure of brake cylinder or gaholder is adjusted to brake pressure (now both pressure are identical);
The 5th step, traction break-in; By tractor truck, draw full extension drum brake mechanism is carried out to break-in, after break-in, until hub outside surface temperature, fall while causing normal temperature, detect wheel lock torque size, left and right wheels torque difference.
The break-in method of described a kind of independent trailer drum brake mechanism, is characterized in that: select following different parameters to draw break-in;
A. brake pressure is adjusted to 0.06～0.08Mpa, tractor truck speed is controlled at 3～6 km/h, then by the probe monitoring wheel hub appearance temperature on digital thermometer, and be controlled at 80 ℃～90 ℃, keep left and right wheel hub temperature as far as possible consistent, error is no more than 10 ℃;
B. brake pressure is adjusted to 0.08～0.1Mpa, tractor truck speed is controlled at 5～8 km/h, probe by digital thermometer monitoring wheel hub appearance temperature again, and be controlled at 100 ℃～110 ℃, keeps the wheel hub temperature uniform error of trying one's best in left and right to be no more than 10 ℃;
C. brake pressure is adjusted to 0.1～0.12Mpa, tractor truck speed is controlled at 7～10 km/h, then by the probe monitoring wheel hub appearance temperature on digital thermometer, and be controlled at 110 ℃～130 ℃, keep left and right wheel hub temperature as far as possible consistent, error is no more than 10 ℃.
The break-in method of the drum brake mechanism of described a kind of independent trailer, is characterized in that: described regulator is comprised of switch, tire pressure gauge and the one group of jointing of adjusting earth pressure release.
The pneumatic control system of independent trailer comprises single-pipeline control system and dual circuit control system; when normally travelling; because causing, accident causation breaks off relations with tractor truck or when tractor truck braking control system occurs normally carrying out air feed to independent trailer supply air line; independent trailer brake activation valve has the die function of emergency brake (full application of brake) of automatic protection, just can guarantee to draw driving safety.
The present invention makes full use of drum brake mechanism in braking state, be that independent trailer pneumatic control system is in the emergency brake of dying (full application of brake) situation, adjust the switch of regulator to brake pressure, in low speed situation, normal traction is carried out break-in to drum brake mechanism, avoided by the wearing and tearing of normal braking break-in mode to wheel hub, brake shoes and tire, and controlled break-in intensity and time by controlling wheel hub break-in temperature.
After traction break-in, treat that wheel hub appearance temperature is fallen to cause normal temperature, carry out wheel braking moment size, left and right wheels torque difference detects.Because processing, assembling and setting have error, after break-in, detect by this method inferior-quality product, then inferior-quality product is done over again until qualified according to this method.
Beneficial effect of the present invention: the method is simple, efficiency is high, do not need specialized equipment effectively to reduce production costs, for the production of small lot, single-piece, many kinds, can reduce the infringement of parts when drum brake mechanism is carried out to break-in, be convenient for changing wheel hub and brake shoes.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the single, double pipeline pneumatic control system of independent trailer;
Fig. 2 is that regulator is located at the schematic diagram on gaholder;
Fig. 3 is that regulator is located at the schematic diagram on pipeline.
In figure: 1-the first air feed connector, 2-the second control linkage head, 3-gaholder, 4-jettison gear, 5-independent trailer brake activation valve, 6-brake cylinder, 7-pipeline, 8-regulator.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Referring to Fig. 1, the single, double pipeline pneumatic control system of shown independent trailer, air feed connector 1 is connected with the right side of independent trailer brake activation valve 5 by pipeline, and the pipeline that passes on left of independent trailer brake activation valve 5 is connected with gaholder 3, and jettison gear 4 is installed on gaholder 3; The bottom of independent trailer brake activation valve 5 is connected with two groups of wheel braking cylinders by pipeline.
The present invention utilizes the single, double pipeline pneumatic control system of existing independent trailer to carry out break-in.The single, double pipeline pneumatic control system of described independent trailer comprises: independent trailer brake activation valve 5, the first air feed connector 1 being connected with independent trailer brake activation valve respectively, the second control linkage 2 and gaholder 3 and be located at the jettison gear 4 on gaholder, also comprise each brake cylinder 6 being connected with independent trailer brake activation valve 5 by pipeline 7.
A kind of break-in method of a kind of independent trailer drum brake mechanism of the present invention (being break-in method that is located at the jettison gear independent trailer drum brake mechanism on gaholder), break-in utilizes the single, double pipeline pneumatic control system of existing independent trailer to carry out, and its step is as follows:
The first step, installs regulator 8; The jettison gear 4 being located on gaholder 3 is pulled down, then regulator 8 is located by connecting on gaholder; Or do not pull down the jettison gear 4 being located on gaholder 3, directly regulator 8 is connected on pipeline 7;
Second step, to independent trailer air feed; With the air connector of tractor truck, be connected and carry out air feed with the first air connector 1 on independent trailer, after gaholder 3 air pressure reach 0.2～0.3Mpa, disconnect;
The 3rd step, installs digital thermometer; The probe of digital thermometer is arranged on Lun Grains outside face, by digital thermometer read-out reading temperature data;
The 4th step, adjusts brake pressure; By tractor truck, control haulage speed, by regulator 8, the air pressure of brake cylinder 6 or gaholder 3 is adjusted to brake pressure, now both pressure are identical;
The 5th step, traction break-in; By tractor truck, draw full extension drum brake mechanism is carried out to break-in, after break-in, until hub outside surface temperature, fall while causing normal temperature, detect wheel lock torque size, left and right wheels torque difference.
Described regulator 8 is comprised of switch, tire pressure gauge and the one group of jointing of adjusting earth pressure release.
embodiment mono-:break-in method referring to the drum brake mechanism of independent trailer shown in Fig. 1 and Fig. 2 comprises the steps:
The first step: the jettison gear on gaholder 34 is pulled down, then regulator 8 is arranged on gaholder 3.Described regulator 8 forms by adjusting earth pressure release switch, tire pressure gauge and one group of jointing, by the switch of jointing and adjustment earth pressure release, controls air pressure, by tire pressure gauge, watches atmospheric pressure value.
Second step: with the air connector of tractor truck, be connected with air connector 1 on trailer carry out air feed to 0.2～disconnect after 0.3Mpa.
The 3rd step: Lun Grains outside face is installed the probe of digital thermometer, by the read-out of digital thermometer, observes temperature traverse.
The 4th step: control haulage speed by tractor truck, by regulator, air pressure is adjusted to suitable brake pressure.(drum brake mechanism that is applicable to any structure, so just each drum brake mechanism lock torque size, left and right wheels torque difference and specified value gap have size to select three kinds of parameters to carry out, can be raised the efficiency break-in)
A. the break-in of low pressure low-intensity, adjusts to 0.06～0.08MPa by brake pressure, and haulage speed is controlled at 3～6 km/h, again by the probe monitoring wheel hub appearance temperature on digital thermometer, and be controlled at 80 ℃～90 ℃, keep the wheel hub temperature uniform error of trying one's best in left and right to be no more than 10 ℃
B. intensity break-in in pressing in, brake pressure is adjusted to 0.08～0.1MPa, and haulage speed is controlled at 5～8 km/h, then by the probe monitoring wheel hub appearance temperature on digital thermometer, and be controlled at 100 ℃～110 ℃, keep the wheel hub temperature uniform error of trying one's best in left and right to be no more than 10 ℃.
C. high pressure high strength break-in, brake pressure is adjusted to 0.1～0.12MPa, and haulage speed is controlled at 7～10 km/h, then by the probe monitoring wheel hub appearance temperature on digital thermometer, and be controlled at 110 ℃～130 ℃, keep the wheel hub temperature uniform error of trying one's best in left and right to be no more than 10 ℃.
The 5th step: after traction break-in, treat that hub outside surface temperature is fallen to cause normal temperature, detect wheel lock torque size, left and right wheels torque difference.
embodiment bis-:break-in method referring to the drum brake mechanism of independent trailer shown in Fig. 1 and Fig. 3 comprises the steps:
The first step: regulator 8 is connected on pipeline 7.
Described regulator 8 forms by adjusting the switch of earth pressure release or tire pressure gauge and one group of jointing, by jointing and the switch of adjusting earth pressure release, controls air pressure, by tire pressure gauge, watches atmospheric pressure value.
Second step: with the air connector of tractor truck, be connected with air connector 1 on trailer carry out air feed to 0.2～disconnect after 0.3Mpa.
The 3rd step: Lun Grains outside face is installed the probe of digital thermometer, by the read-out of digital thermometer, observes temperature traverse.
The 4th step: control haulage speed by tractor truck, by regulator, air pressure is adjusted to brake pressure.(drum brake mechanism that is applicable to any structure, so just each drum brake mechanism lock torque size, left and right wheels torque difference and specified value gap have size to select three kinds of parameters to carry out, can be raised the efficiency break-in)
A. the break-in of low pressure low-intensity, adjusts to 0.06～0.08MPa by brake pressure, and haulage speed is controlled at 3～6 km/h, again by the probe monitoring wheel hub appearance temperature on digital thermometer, and be controlled at 80 ℃～90 ℃, keep the wheel hub temperature uniform error of trying one's best in left and right to be no more than 10 ℃
B. intensity break-in in pressing in, brake pressure is adjusted to 0.08～0.1MPa, and haulage speed is controlled at 5～8 km/h, then by the probe monitoring wheel hub appearance temperature on digital thermometer, and be controlled at 100 ℃～110 ℃, keep the wheel hub temperature uniform error of trying one's best in left and right to be no more than 10 ℃.
C. high pressure high strength break-in, brake pressure is adjusted to 0.1～0.12MPa, and haulage speed is controlled at 7～10 km/h, then by the probe monitoring wheel hub appearance temperature on digital thermometer, and be controlled at 110 ℃～130 ℃, keep the wheel hub temperature uniform error of trying one's best in left and right to be no more than 10 ℃.
The 5th step: after traction break-in, treat that hub outside surface temperature is fallen to cause normal temperature, detect wheel lock torque size, left and right wheels torque difference.
Claims (2)
1. a break-in method for independent trailer drum brake mechanism, break-in utilizes the single, double pipeline pneumatic control system of existing independent trailer to carry out, and its step is as follows:
The first step, installs regulator, the jettison gear (4) being located on gaholder (3) is pulled down, then regulator (8) is located by connecting on gaholder; Or do not pull down the jettison gear (4) being located on gaholder (3), directly regulator (8) is connected on pipeline (7);
Second step, to independent trailer air feed, is connected and carries out air feed with the first air connector (1) on independent trailer with the air connector of tractor truck, after gaholder (3) air pressure reaches 0.2～0.3Mpa, disconnects;
The 3rd step, installs digital thermometer, the probe of digital thermometer is arranged in hub outside surface, by digital thermometer read-out reading temperature data;
The 4th step, adjusts brake pressure, by tractor truck, controls haulage speed, by regulator (8), the air pressure of brake cylinder (6) or gaholder (3) is adjusted to brake pressure;
The 5th step, traction break-in, carries out break-in by tractor truck to drum brake mechanism, after break-in, when hub outside surface temperature is down to normal temperature, detects wheel lock torque size, left and right wheels torque difference;
Select following different parameters to draw break-in;
A. brake pressure is adjusted to 0.06～0.08Mpa, tractor truck speed is controlled at 3～6 km/h, then by the probe monitoring wheel hub appearance temperature on digital thermometer, and be controlled at 80 ℃～90 ℃, keep left and right wheel hub temperature as far as possible consistent, error is no more than 10 ℃;
B. brake pressure is adjusted to 0.08～0.1Mpa, tractor truck speed is controlled at 5～8 km/h, probe by digital thermometer monitoring wheel hub appearance temperature again, and be controlled at 100 ℃～110 ℃, keeps the wheel hub temperature uniform error of trying one's best in left and right to be no more than 10 ℃;
C. brake pressure is adjusted to 0.1～0.12Mpa, tractor truck speed is controlled at 7～10 km/h, then by the probe monitoring wheel hub appearance temperature on digital thermometer, and be controlled at 110 ℃～130 ℃, keep left and right wheel hub temperature as far as possible consistent, error is no more than 10 ℃.
2. the break-in method of the drum brake mechanism of a kind of independent trailer according to claim 1, is characterized in that: described regulator (8) is comprised of switch, tire pressure gauge and the one group of jointing of adjusting earth pressure release.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210160376.XA CN102673547B (en) | 2012-05-23 | 2012-05-23 | Running-in method of full trailer drum brake |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210160376.XA CN102673547B (en) | 2012-05-23 | 2012-05-23 | Running-in method of full trailer drum brake |
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| Publication Number | Publication Date |
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| CN102673547A CN102673547A (en) | 2012-09-19 |
| CN102673547B true CN102673547B (en) | 2014-04-02 |
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| CN109131280B (en) * | 2017-06-19 | 2022-09-27 | 罗伯特·博世有限公司 | Brake pad running-in method and electronic control unit thereof |
| CN109648430B (en) * | 2018-12-05 | 2020-11-10 | 兰州飞行控制有限责任公司 | Aviation friction clutch adjusting process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962061A (en) * | 2010-10-18 | 2011-02-02 | 重庆隆鑫机车有限公司 | Drum brake for front wheel of motorcycle |
| CN102323065A (en) * | 2011-06-10 | 2012-01-18 | 郑州日产汽车有限公司 | Method for testing sensation evaluation of brake pedal |
| CN102458936A (en) * | 2009-06-23 | 2012-05-16 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Electronic braking system having friction brake comprising friction linings for at least one wheel brake, and having at least one electronic control device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10322451A1 (en) * | 2003-05-19 | 2004-12-09 | Continental Teves Ag & Co. Ohg | Process for optimizing the friction coefficient of brake linings of a friction brake |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102458936A (en) * | 2009-06-23 | 2012-05-16 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Electronic braking system having friction brake comprising friction linings for at least one wheel brake, and having at least one electronic control device |
| CN101962061A (en) * | 2010-10-18 | 2011-02-02 | 重庆隆鑫机车有限公司 | Drum brake for front wheel of motorcycle |
| CN102323065A (en) * | 2011-06-10 | 2012-01-18 | 郑州日产汽车有限公司 | Method for testing sensation evaluation of brake pedal |
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