CN106895983B - Automobile brake clearance adjusting arm detection device - Google Patents
Automobile brake clearance adjusting arm detection device Download PDFInfo
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- CN106895983B CN106895983B CN201710256256.2A CN201710256256A CN106895983B CN 106895983 B CN106895983 B CN 106895983B CN 201710256256 A CN201710256256 A CN 201710256256A CN 106895983 B CN106895983 B CN 106895983B
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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
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- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
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Abstract
The invention discloses a detection device for an automobile brake clearance adjusting arm, which comprises an electric cabinet and a detection mechanism, wherein the detection mechanism comprises a bottom plate arranged on the upper surface of the electric cabinet, and a detection assembly, a power assembly and an adjusting assembly are arranged on the bottom plate. The invention aims to provide a device for detecting the self-adjusting function of an automatic adjusting arm of an automobile, which simulates the working process of the automatic adjusting arm of the automobile in the actual braking process, can detect the functionality and the maximum self-adjusting angle of the adjusting arm, simulates the actual automobile environment under different automobile types or experimental conditions by changing the air charging and discharging time and the air charging and discharging interval of an air cylinder, and can also detect the maximum working life of the adjusting arm under different automobile types or experimental conditions.
Description
Technical Field
The invention relates to a function detection device for detecting automobile parts, in particular to a detection device for an automobile brake clearance adjusting arm.
Background
In the using process of the automobile, frequent braking can lead to continuous abrasion of a braking element, and the braking clearance between a brake drum and a brake shoe is increased, so that potential safety hazards such as lengthening of the stroke of a brake pedal, braking lag, reduction of braking force and the like are caused. In order to ensure the driving safety, maintain the relative stability of the pedal stroke and the working balance among the brakes, an adjusting arm is required to be used for adjusting the braking clearance. The adjusting arm is used as a key part of an automobile braking system and is an important factor for ensuring long-term good automobile braking performance, so that the adjusting arm is required to be detected when leaving a factory. The key technology for detecting the adjusting arm is a device for simulating the increase of the braking clearance.
Disclosure of Invention
The invention aims to provide a device for detecting the self-adjusting function of an automatic adjusting arm of an automobile, which can simulate the working process of the automatic adjusting arm of the automobile in the actual braking process of the automobile and is used for detecting the functionality, the maximum self-adjusting angle and the maximum service life of the adjusting arm.
In order to achieve the above purpose, the technical scheme of the invention is as follows: the automobile braking gap adjusting arm detection device comprises an electric cabinet, wherein lockable rollers are arranged at the bottom of the electric cabinet, a detection mechanism is arranged on the electric cabinet and comprises a bottom plate arranged on the upper surface of the electric cabinet, a detection assembly, a power assembly and an adjusting assembly are arranged on the bottom plate,
the detection assembly comprises a fixed base arranged on the upper surface of a bottom plate, a limit shaft which is rotationally connected with the fixed base is penetrated through the fixed base, one end of the limit shaft is provided with a spline shaft which is coaxially and drivingly connected with the limit shaft, a spline which is axially arranged is arranged outside the spline shaft, the tail end of the spline shaft is provided with a movable support which is rotationally connected with the spline shaft, the other end of the limit shaft is provided with a worm wheel which is coaxially arranged with the limit shaft, the worm wheel is rotationally connected with the fixed base, a fan-shaped groove which is coaxially arranged with the limit shaft is arranged in the worm wheel, a detection block which can radially swing along the axis of the worm wheel is arranged in the fan-shaped groove, and the detection block is axially and fixedly connected with the limit shaft;
the power assembly comprises a slideway arranged on the upper surface of the bottom plate, the slideway is axially arranged along the limiting shaft, the slideway is connected with a cylinder fixing plate in a sliding manner, a cylinder and a cylinder fixing hole for fixing the cylinder are arranged on the cylinder fixing plate, and a cylinder push rod is arranged at the tail end of the cylinder;
the adjusting component comprises a worm base arranged on the bottom plate, a worm meshed with the worm wheel is rotationally connected to the worm base, the worm is connected with a speed reducer through a coupler, and the input end of the speed reducer is connected with a motor;
and a PLC control center is arranged in the electric cabinet and is electrically connected with the air cylinder and the motor respectively.
Preferably, the movable support is slidably connected with the bottom plate, and the sliding direction is the same as the sliding direction of the slideway.
As one preference of this scheme, still be equipped with diaphragm formula limit switch in the fan-shaped groove, diaphragm formula limit switch sets up on the arbitrary tangent plane of detection piece anticlockwise direction and fan-shaped groove lateral wall contact surface, and when detection piece anticlockwise direction contacted with the fan-shaped groove lateral wall, diaphragm formula limit switch was normally open state, and when detection piece anticlockwise direction did not contact with the fan-shaped groove lateral wall, diaphragm formula limit switch was the off-state.
As one preference of the scheme, the limiting shaft is externally provided with a supporting tube fixedly connected with a limiting shaft base, the supporting tube is externally provided with a fixing ring and a hoop, and the hoop is externally provided with a fixing rod fixedly connected with a cylinder fixing tube.
As one preferable mode of the scheme, the tail end of the worm wheel is provided with a worm wheel end cover coaxially connected with the worm wheel, and a torsion spring connected with the detection block is fixed in the worm wheel end cover.
The method for detecting the maximum self-angle modulation of the adjusting arm of the automobile brake clearance adjusting arm detection device is characterized in that the cylinder is repeatedly operated on the basis that the minimum rotatable angle is always arranged between the anticlockwise direction of the detecting block and the side wall of the fan-shaped groove, so that the detecting block rotates until the rotated detecting block is not contacted with the side wall of the fan-shaped groove in the anticlockwise direction, and the cumulative rotation angle of the worm wheel is the maximum self-angle modulation of the adjusting arm in the process.
The method for detecting the maximum service life of the adjusting arm of the automobile brake clearance adjusting arm detection device is characterized in that under the conditions of set brake time and brake interval, on the basis that the rotatable angle of a detection block is larger than zero and smaller than the maximum self-adjusting angle of the adjusting arm, an air cylinder is repeatedly operated, so that the detection block rotates until the rotated detection block is not contacted with the side wall of a fan-shaped groove in the anticlockwise direction, and the accumulated action times of the air cylinder in the process are the maximum self-adjusting angle of the adjusting arm.
The beneficial effects of the invention are as follows: the invention aims to provide an automatic adjusting arm self-adjusting function detection device of an automobile, which can simulate the working process of an adjusting arm under the condition of existence of excessive clearance in the braking process of the automobile, simulate the braking excessive clearance of the automobile by using a motor loading mode, be used for detecting the functionality and the maximum self-adjusting angle of the adjusting arm, simulate the actual automobile environment under different automobile types or experimental conditions by changing the air charging and discharging time and the air charging and discharging interval of an air cylinder, and be used for detecting the maximum working life of the adjusting arm under different automobile types or experimental conditions.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of a detection mechanism according to an embodiment of the present invention;
FIG. 3 is a side view of a detection mechanism according to an embodiment of the present invention;
FIG. 4 is a front view of a detection mechanism according to an embodiment of the present invention;
FIG. 5 is a schematic view of a worm gear in an embodiment of the invention;
FIG. 6 is a side view of a worm gear in an embodiment of the invention;
fig. 7 is an assembled view of a worm gear end cap in an embodiment of the invention.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
As shown in fig. 1-7, the automobile brake clearance adjusting arm detection device comprises an electric cabinet 1, wherein lockable rollers 12 are arranged at the bottom of the electric cabinet, a detection mechanism 2 is arranged on the electric cabinet 1, the detection mechanism 2 comprises a bottom plate 3 arranged on the upper surface of the electric cabinet 1, a detection component 4, a power component 5 and an adjusting component 6 are arranged on the bottom plate 3,
the detection assembly 4 comprises a fixed base 41 arranged on the upper surface of the bottom plate 3, a limit shaft 48 which is rotationally connected with the fixed base 41 is penetrated through the fixed base 41, a spline shaft 43 which is coaxially and drivingly connected with the limit shaft 48 is arranged at one end of the limit shaft 48, an axially arranged spline is arranged outside the spline shaft 43, an adjusting arm is sleeved outside the spline shaft 43, an inner worm wheel of the adjusting arm is meshed with the spline, a movable support 42 is arranged at the tail end of the spline shaft 43, the movable support 42 is rotationally connected with the spline shaft 43, a worm wheel 45 which is coaxially arranged with the limit shaft 48 is arranged at the other end of the limit shaft 48, the worm wheel 45 is rotationally connected with the fixed base 41, a fan-shaped groove 46 which is coaxially arranged with the limit shaft 48 is arranged in the worm wheel 45, a detection block 47 which can radially swing along the axis of the worm wheel 45 is arranged in the fan-shaped groove 46, and the detection block 47 is axially and fixedly connected with the limit shaft 48;
the power assembly 5 comprises a slide way 51 arranged on the upper surface of the bottom plate 3, the slide way 51 is axially arranged along the limiting shaft 48, a cylinder fixing plate 52 is slidably connected to the slide way 51, a cylinder 53 and a cylinder fixing hole 55 for fixing the cylinder 53 are arranged on the cylinder fixing plate 52, a cylinder push rod 54 capable of being arranged at the tail end of the cylinder 53, the cylinder push rod 54 penetrates through the cylinder fixing hole 55 and is hinged with a pin shaft of the adjusting arm 44, the adjusting arm 44 drives the limiting shaft 48 to do small-angle circular arc motion along the axis of the limiting shaft under the power action of the cylinder 53 and the cylinder push rod 54 and the limiting shaft 48 to return to the initial positions under the action of the self-adjusting function after the action of the cylinder 53 is finished; the action times, the air charging and discharging time and the air charging and discharging intervals of the air cylinder 53 can be set for simulating the braking condition of the automobile under different braking environments;
the adjusting assembly 6 comprises a worm base 61 arranged on the bottom plate 3, a worm 62 meshed with the worm wheel 45 is rotatably connected to the worm base 61, the worm 62 is connected with a speed reducer 64 through a coupler 63, and the input end of the speed reducer 64 is connected with a motor 65; as shown in fig. 6, the worm 62 is driven by the motor 65 to drive the worm wheel 45 to rotate, and the angle between the anticlockwise direction of the detection block 47 and the side wall of the fan-shaped groove 46 (namely, the rotatable angle of the inner worm wheel of the adjusting arm) is adjusted, wherein the angle simulates the excessive gap generated by abrasion of the automobile brake pad in reality, the anticlockwise direction of the detection block 47 contacts with the side wall of the fan-shaped groove to form no excessive gap, and the anticlockwise direction of the detection block 47 and the side wall of the fan-shaped groove form gaps to form excessive gaps;
a PLC control center 11 (not marked in the figure) is arranged in the electric cabinet 1, and the PLC control center 11 is electrically connected with the air cylinder 53 and the motor 65 respectively;
in order to facilitate the installation and removal of the adjusting arm 44, the movable support 42 is in sliding connection with the bottom plate 3, and the sliding direction is the same as the sliding direction;
the inside of the fan-shaped groove 46 is also provided with a diaphragm type limit switch 49, the diaphragm type limit switch 49 is arranged on any section of the contact surface between the anticlockwise direction of the detection block 47 and the side wall of the fan-shaped groove 46, when the anticlockwise direction of the detection block 47 contacts the side wall of the fan-shaped groove 46, the diaphragm type limit switch 49 is in a normally-on state, and when the anticlockwise direction of the detection block 47 does not contact the side wall of the fan-shaped groove 46, the diaphragm type limit switch 49 is in an off state;
in order to ensure that each component can be accurately reset after detection is finished, a worm wheel end cover 401 which is coaxially and fixedly connected with the worm wheel 45 is arranged at the tail end of the worm wheel 45, a torsion spring 402 is arranged in the worm wheel end cover 401, one end of the torsion spring 402 is fixedly connected with the worm wheel end cover 401, and the other end is fixedly connected with a detection block 47;
in order to ensure the stability of the structure, a support tube 403 fixedly connected with the fixed base 41 is arranged outside the limiting shaft 48, a fixing ring 404 and a hoop 405 are arranged outside the support tube 403, the hoop 405 is fixedly connected with the support tube 403 and is externally connected with a fixing rod 406 fixedly connected with the cylinder fixing plate 52, and the fixing ring 404 is fixedly connected with the adjusting arm 44 for transversely fixing the adjusting arm 44.
According to the working principle of the adjusting arm 44, after the cylinder push rod 54 returns, the adjusting arm 44 returns to the initial position, but during the returning process, the position of the limiting shaft 48 should be consistent with the position before returning, and the detecting block 47 should rotate anticlockwise and contact the side wall of the fan-shaped groove 46.
A detection method of the maximum self-angle modulation of an automobile adjusting arm specifically comprises the following steps:
firstly, installing an adjusting arm 44, sleeving an inner worm wheel of the adjusting arm 44 to be detected on a spline shaft 43, rotating the spline shaft 43 to ensure that the inner worm of the adjusting arm 44 is parallel to the ground, connecting the adjusting arm 44 through a fixed ring 404, transversely fixing the adjusting arm 44, and hinging a connecting hole of the adjusting arm 44 and a cylinder push rod 54 through a pin shaft; translating the movable support 42, connecting the movable support 42 with the front end of the spline shaft 43, and fixing the movable support 42 on the bottom plate 3 by using screws;
step two, setting the action times of the air cylinder 53 through the PLC control center 11, driving the motor 65 through the PLC control center 11, rotating the worm wheel 45 through the speed reducer 64, the coupler 63 and the worm 62 by the motor 65, and adjusting the rotatable angle of the inner worm wheel of the adjusting arm 44, wherein the rotatable angle of the inner worm wheel does not exceed the maximum self-adjusting angle of the adjusting arm 44;
step three, the air cylinder 53 acts according to the set number of times of acts, after the air cylinder 53 acts, after the air cylinder push rod 54 returns, as shown in fig. 6, the on-off state of the diaphragm type limit switch 49 is observed, if the state is the normal on state, the steps two to three are repeated until the diaphragm type limit switch 49 becomes the off state, then the self-adjusting function of the adjusting arm 44 is judged to be invalid, the test is finished, and the accumulated rotation angle of the turbine 45 recorded by the PLC control center 11 is the maximum self-adjusting angle of the adjusting arm 44.
A detection method for the maximum service life of an automobile adjusting arm specifically comprises the following steps:
firstly, installing an adjusting arm 44, sleeving an inner worm wheel of the adjusting arm 44 to be detected on a spline shaft 43, rotating the spline shaft 43 to ensure that the inner worm of the adjusting arm 44 is parallel to the ground, connecting the adjusting arm 44 through a fixed ring 404, transversely fixing the adjusting arm 44, and hinging a connecting hole of the adjusting arm 44 and a cylinder push rod 54 through a pin shaft; translating the movable support 42, connecting the movable support 42 with the front end of the spline shaft 43, and fixing the movable support 42 on the bottom plate 3 by using screws;
step two, setting the action times, the air charging and discharging time and the air charging and discharging intervals of the air cylinder 53 through the PLC control center 11, driving the motor 65 through the PLC control center 11, rotating the worm wheel 45 through the speed reducer 64, the coupler 63 and the worm 62 by the motor 65, and adjusting the rotatable angle of the inner worm wheel of the adjusting arm 44, wherein the rotatable angle of the inner worm wheel does not exceed the maximum self-adjusting angle of the adjusting arm 44;
step three, the air cylinder 53 acts according to the set times of action, the time of inflation and deflation and the interval of inflation and deflation, after the air cylinder 53 acts, after the air cylinder push rod 54 returns to the original position, as shown in fig. 6, the on-off state of the diaphragm type limit switch 49 is observed, if the state is normal, the self-adjusting function of the adjusting arm 44 is judged to be invalid, the test is finished, and the times of the air cylinder 53 acts recorded by the PLC control center 11 are the set brake time and the maximum service life under the condition of the brake interval; if the self-adjusting function of the adjusting arm 44 is still effective in the off state, the motor 65 is continuously driven to adjust the worm wheel 45 to rotate anticlockwise, the rotatable angle of the inner worm wheel of the adjusting arm 44 is set, the accumulated value of the rotatable angle of the inner worm wheel is smaller than the maximum self-adjusting angle of the adjusting arm 44, the above operation is repeated until the maximum rotatable angle of the adjusting arm 44 reaches the maximum rotatable angle of the detecting block 47 allowed to rotate by the fan-shaped groove 46, namely, the side wall of the fan-shaped groove 46 contacts the detecting block 47 anticlockwise, the adjusting arm 44 is removed, the worm wheel 45 is reset, the steps one to three are repeated until the diaphragm-type limit switch 49 is in the off state, and the accumulated operation times of the air cylinder 53 recorded by the PLC control center 11 is the set maximum service life under the conditions of the set braking time and the set braking interval.
The described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
Claims (7)
1. The automobile braking gap adjusting arm detection device is characterized by comprising an electric cabinet, wherein lockable rollers are arranged at the bottom of the electric cabinet, a detection mechanism is arranged on the electric cabinet and comprises a bottom plate arranged on the upper surface of the electric cabinet, a detection assembly, a power assembly and an adjusting assembly are arranged on the bottom plate,
the detection assembly comprises a fixed base arranged on the upper surface of a bottom plate, a limit shaft which is rotationally connected with the fixed base is penetrated through the fixed base, one end of the limit shaft is provided with a spline shaft which is coaxially connected with the limit shaft in a transmission way, a spline which is axially arranged is arranged outside the spline shaft, an adjusting arm is sleeved outside the spline shaft, an inner worm wheel of the adjusting arm is meshed with the spline, a movable support is arranged at the tail end of the spline shaft and is rotationally connected with the spline shaft, a worm wheel which is coaxially arranged with the limit shaft is arranged at the other end of the limit shaft and is rotationally connected with the fixed base, a fan-shaped groove which is coaxially arranged with the limit shaft is arranged in the worm wheel, a detection block which can radially swing along the axis of the worm wheel is arranged in the fan-shaped groove, and the detection block is axially and fixedly connected with the limit shaft;
the power assembly comprises a slideway arranged on the upper surface of the bottom plate, the slideway is axially arranged along the limiting shaft, the slideway is connected with a cylinder fixing plate in a sliding manner, a cylinder and a cylinder fixing hole for fixing the cylinder are arranged on the cylinder fixing plate, and a cylinder push rod is arranged at the tail end of the cylinder; the cylinder push rod passes through the cylinder fixing hole and is hinged with the adjusting arm pin shaft, the adjusting arm drives the limiting shaft to do small-angle circular arc movement along the axis of the limiting shaft under the power action of the cylinder and the cylinder push rod, and after the cylinder action is finished, the adjusting arm drives the cylinder push rod and the limiting shaft to return to the initial position under the action of the self-adjusting function;
the adjusting component comprises a worm base arranged on the bottom plate, a worm meshed with the worm wheel is rotationally connected to the worm base, the worm is connected with a speed reducer through a coupler, and the input end of the speed reducer is connected with a motor; the worm is driven by the motor to drive the worm wheel to rotate, the angle between the anticlockwise direction of the detection block and the side wall of the sector groove is adjusted, the angle simulates the excessive gap size of the automobile brake pad due to abrasion in reality,
and a PLC control center is arranged in the electric cabinet and is electrically connected with the air cylinder and the motor respectively.
2. The device for detecting the brake clearance adjustment arm of an automobile according to claim 1, wherein the movable support is slidably connected to the bottom plate, and the sliding direction is the same as the sliding direction of the slide way.
3. The device for detecting the brake clearance adjusting arm of the automobile according to claim 1, wherein a diaphragm type limit switch is further arranged in the fan-shaped groove, the diaphragm type limit switch is arranged on any tangential surface of a contact surface between the anticlockwise direction of the detecting block and the side wall of the fan-shaped groove, the diaphragm type limit switch is in a normally-on state when the anticlockwise direction of the detecting block contacts the side wall of the fan-shaped groove, and the diaphragm type limit switch is in an off state when the anticlockwise direction of the detecting block does not contact the side wall of the fan-shaped groove.
4. The device for detecting the brake clearance adjusting arm of the automobile according to claim 1, wherein a supporting tube fixedly connected with a base of the limiting shaft is arranged outside the limiting shaft, a fixing ring and a hoop are arranged outside the supporting tube, and a fixing rod fixedly connected with a cylinder fixing tube is arranged outside the hoop.
5. The device for detecting the brake clearance adjusting arm of the automobile according to claim 1, wherein a worm wheel end cover coaxially connected with the worm wheel is arranged at the tail end of the worm wheel, and a torsion spring connected with the detecting block is fixed in the worm wheel end cover.
6. The method for detecting the maximum self-angle of the adjusting arm based on the automobile brake clearance adjusting arm detection device according to claim 1 is characterized in that on the basis of ensuring that the minimum rotatable angle is always arranged between the anticlockwise direction of the detection block and the side wall of the fan-shaped groove, the cylinder is repeatedly operated to enable the detection block to rotate until the rotated detection block is not contacted with the side wall of the fan-shaped groove in the anticlockwise direction any more, and the cumulative rotation angle of the worm wheel is the maximum self-angle of the adjusting arm in the process; the method specifically comprises the following steps:
step one, installing an adjusting arm, sleeving an inner worm wheel of the adjusting arm to be detected on a spline shaft, rotating the spline shaft to ensure that the inner worm of the adjusting arm is parallel to the ground, connecting the adjusting arm through a fixed ring, transversely fixing the adjusting arm, and hinging a connecting hole of the adjusting arm and a cylinder push rod through a pin shaft; translating the movable support, connecting the movable support with the front end of the spline shaft, and fixing the movable support on the bottom plate by using a screw;
setting the action times of the air cylinder through the PLC control center, driving the motor through the PLC control center, enabling the motor to rotate the worm wheel through the speed reducer, the coupler and the worm, and adjusting the rotatable angle of the inner worm wheel of the adjusting arm, wherein the rotatable angle of the inner worm wheel does not exceed the maximum self-adjusting angle of the adjusting arm;
and thirdly, the air cylinder acts according to the set action times, after the air cylinder acts, the air cylinder push rod returns, the on-off state of the diaphragm type limit switch is observed, if the air cylinder is in a normally-on state, the steps two to three are repeated until the diaphragm type limit switch becomes in an off state, the self-adjusting function of the adjusting arm is judged to be invalid, the test is finished, and the accumulated rotation angle of the turbine recorded by the PLC control center is the maximum self-adjusting angle of the adjusting arm.
7. The method for detecting the maximum service life of the adjusting arm based on the automobile brake clearance adjusting arm detection device according to claim 1, wherein under the condition of set brake time and brake interval, on the basis of ensuring that the rotatable angle of the detecting block is larger than zero and smaller than the maximum self-angle of the adjusting arm, the cylinder is repeatedly operated, so that the detecting block rotates until the rotated detecting block is not contacted with the side wall of the fan-shaped groove in the anticlockwise direction any more, and the accumulated action times of the cylinder in the process is the maximum service life of the adjusting arm, and the method is characterized in that:
step one, installing an adjusting arm, sleeving an inner worm wheel of the adjusting arm to be detected on a spline shaft, rotating the spline shaft to ensure that the inner worm of the adjusting arm is parallel to the ground, connecting the adjusting arm through a fixed ring, transversely fixing the adjusting arm, and hinging a connecting hole of the adjusting arm and a cylinder push rod through a pin shaft; translating the movable support, connecting the movable support with the front end of the spline shaft, and fixing the movable support on the bottom plate by using a screw;
setting the action times, the air charging and discharging time and the air charging and discharging intervals of the air cylinder through a PLC control center, driving a motor through the PLC control center, enabling the motor to rotate a worm wheel through a speed reducer, a coupling and a worm, and adjusting the rotatable angle of an inner worm wheel of an adjusting arm, wherein the rotatable angle of the inner worm wheel does not exceed the maximum self-adjusting angle of the adjusting arm;
thirdly, the air cylinder acts according to the set action times, the air charging and discharging time and the air charging and discharging intervals, after the action of the air cylinder is finished, after the push rod of the air cylinder returns, the on-off state of the diaphragm type limit switch is observed, if the air cylinder is in a normally-on state, the self-adjusting function of the adjusting arm is judged to be invalid, the test is finished, and the action times of the air cylinder recorded by the PLC control center are the set braking time and the maximum service life under the condition of the braking interval; if the adjusting arm is in a disconnection state, the self-adjusting function of the adjusting arm can still be judged to be effective, the motor is continuously driven to adjust the worm wheel to rotate anticlockwise, the rotatable angle of the inner worm wheel of the adjusting arm is set, the accumulated value of the rotatable angle of the inner worm wheel is smaller than the maximum self-adjusting angle of the adjusting arm, the operation is repeated until the maximum rotatable angle of the adjusting arm reaches the maximum rotatable angle of the sector groove allowing the detecting block to rotate, namely the side wall of the sector groove contacts the detecting block anticlockwise, the adjusting arm is dismantled, the worm wheel is reset, the first to third steps are repeated until the diaphragm type limit switch is in a disconnection state, and the accumulated action times of the air cylinder recorded by the PLC control center is the set maximum service life under the conditions of braking time and braking interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710256256.2A CN106895983B (en) | 2017-04-19 | 2017-04-19 | Automobile brake clearance adjusting arm detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710256256.2A CN106895983B (en) | 2017-04-19 | 2017-04-19 | Automobile brake clearance adjusting arm detection device |
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| CN106895983A CN106895983A (en) | 2017-06-27 |
| CN106895983B true CN106895983B (en) | 2023-09-12 |
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| CN201710256256.2A Active CN106895983B (en) | 2017-04-19 | 2017-04-19 | Automobile brake clearance adjusting arm detection device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111413104B (en) * | 2020-03-20 | 2021-09-17 | 重庆凯装自动化设备有限公司 | Adjusting device and method for simulating replacement of brake lining by four-degree-of-freedom automobile self-adjusting arm |
| CN111562112B (en) * | 2020-04-22 | 2021-04-27 | 东风汽车集团有限公司 | Automatic adjustment arm self-modulation function durability test's clearance adjustment analogue means |
| CN111579231B (en) * | 2020-05-20 | 2022-03-29 | 中国重汽集团济南动力有限公司 | Brake clearance automatic adjusting arm performance detection device and performance detection method |
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