CN206311347U - Brake cacophonia detection caution device - Google Patents

Abstract

One kind brake cacophonia detection caution device, brake cacophonia detection caution device includes bearing assembly, simulated assembly and detection components, and bearing assembly includes loading plate, the first motor, two support bars, the second motor and support frame；Simulated assembly includes two position-limited wheels and test device；Test device includes telescopic block, deceleration device and transmission device, and telescopic block is connected by transmission device with deceleration device, deceleration device and the second motor connection；Detection components include induction module and Main Processor Unit.Above-mentioned brake cacophonia detects caution device, after by bearing assembly and simulated assembly, Awaiting Overhaul vehicle is maked somebody a mere figurehead, the wheel of Awaiting Overhaul vehicle is located between two position-limited wheels and is contacted with telescopic block, after Awaiting Overhaul vehicle launch, two position-limited wheels and telescopic block treat maintenance vehicle and are simulated real surface conditions.Detection mode convenient quickly, safety, the accuracy of judgement, improve the efficiency for repairing.

Description

Brake cacophonia detection caution device

Technical field

The utility model is related to the technical field of sound detection, and more particularly to a kind of brake cacophonia detection warning sets It is standby.

Background technology

With the development of science and technology and social economy, the progressive active influence of science and technology the economy of society and changes people Life style.At present, vehicle deceleration abnormal sound i.e. skidding noise abnormal failure, when repairing, can only be by repairing Personnel drive to be run on road surface, are judged.

It is difficult judgement, dangerous while detection mode is bothered however, because road conditions are different, be difficult accurately to pinpoint the problems, outward The environmental change on boundary, easily brings the influence of the sense of hearing to repairman, due to being the artificial subjective judgement of repairman, easily goes out Existing error in judgement, and traditional detection instrument is unable to the truth of simulated roadway, causes the result of detection more unilateral, from And influence the efficiency that repairs.

Utility model content

Based on this, it is necessary to for detection mode trouble, it is difficult judge, it is dangerous, easily there is error in judgement, can not simulate The truth on road surface causes the technical problem that the result of detection is more unilateral, influence repairs efficiency, there is provided one kind brake sound Abnormality detection caution device.

One kind brake cacophonia detection caution device, brake cacophonia detection caution device includes：Bearing assembly, Simulated assembly and detection components, the bearing assembly include loading plate, the first motor, two support bars, the second motor and support frame, The loading plate is connected with support frame as described above, and the loading plate offers gathering hole；The simulated assembly include two position-limited wheels and Test device, first motor, the support bar, test device described in two and second motor are arranged at the support On frame；First motor is connected with support bar described in two respectively, and support bar described in two passes through the gathering hole, each branch The end of strut is provided with position-limited wheel described in, and the test device is located between position-limited wheel described in two；The test device bag Telescopic block, deceleration device and transmission device are included, the telescopic block is connected by the transmission device with the deceleration device, described Deceleration device and second motor connection；The detection components include induction module and Main Processor Unit, the induction module Including the inductor and pretreatment circuit that are electrically connected with, the inductor is arranged in the telescopic block, the Main Processor Unit Including the signal processing circuit being electrically connected with and siren, the pretreatment circuit is connected with signal processing circuit communication, The pretreatment circuit, the signal processing circuit and the siren are arranged on support frame as described above.

Wherein in one embodiment, the loading plate is the platy structure of cuboid.

Wherein in one embodiment, the loading plate includes opposite mounting surface and contact surface, and support frame as described above is installed In on the mounting surface side.

Wherein in one embodiment, the deceleration device is removably disposed on support frame as described above.

Wherein in one embodiment, the test device also includes housing, and the housing is arranged on support frame as described above, The deceleration device is arranged in the housing, and second motor is used to operationally drive the telescopic block to do reciprocal fortune It is dynamic.

Wherein in one embodiment, the housing is provided with cavity and connects the telescopic mouth of the cavity, described to stretch Contracting block is arranged in the telescopic mouth and is partially housed in the cavity.

Above-mentioned brake cacophonia detects caution device, is maked somebody a mere figurehead Awaiting Overhaul vehicle by bearing assembly and simulated assembly Afterwards, the wheel of Awaiting Overhaul vehicle be located at two position-limited wheels between and and telescopic block contact, after Awaiting Overhaul vehicle launch, two position-limited wheels with Telescopic block treats maintenance vehicle and is simulated real surface conditions, and now the inductor of detection components collects Awaiting Overhaul vehicle system The abnormal sound noise that is produced during dynamic brake deceleration simultaneously reaches Main Processor Unit, and the signal processing circuit of Main Processor Unit is made an uproar to the abnormal sound Message number is analyzed comparison, and when noise is abnormal, siren sounds the alarm and reminds the corresponding Awaiting Overhaul vehicle of test device Braking device it is abnormal pointing out to be repaired.The detection mode can real surface conditions so that the result of detection It is scientific and reasonable, while detection mode convenient quickly, safety, the accuracy of judgement, improve the efficiency for repairing.

Brief description of the drawings

Fig. 1 is the structural representation of brake cacophonia detection caution device in one embodiment；

Fig. 2 is the structural representation at another visual angle of brake cacophonia detection caution device in one embodiment；

Fig. 3 is the module diagram of detection components in one embodiment；

Fig. 4 is the module diagram of pretreatment circuit in one embodiment；

Fig. 5 is the module diagram of signal processing circuit in one embodiment；

Fig. 6 is the structural representation of brake cacophonia detection caution device in another embodiment；

Fig. 7 is the partial structurtes view one of brake cacophonia detection caution device in one embodiment；

Fig. 8 is the partial structurtes view two of brake cacophonia detection caution device in one embodiment；

Fig. 9 is the structural representation of brake cacophonia detection caution device in another embodiment；

Figure 10 is the partial structural diagram of embodiment illustrated in fig. 9.

Specific embodiment

To enable above-mentioned purpose of the present utility model, feature and advantage more obvious understandable, below in conjunction with the accompanying drawings to this The specific embodiment of utility model is described in detail.Elaborate many details in order to abundant in the following description Understand the utility model.But the utility model can be implemented with being much different from other manner described here, this area Technical staff can do similar improvement in the case of without prejudice to the utility model intension, therefore the utility model does not receive following public affairs The limitation of the specific embodiment opened.

In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width Degree ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outward ", The orientation or position relationship of the instruction such as " clockwise ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " are based on shown in the drawings Orientation or position relationship, are for only for ease of description the utility model and simplify description, rather than the dress for indicating or implying meaning Put or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to the utility model Limitation.

Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or Implicitly include at least one this feature.In description of the present utility model, " multiple " is meant that at least two, such as two It is individual, three etc., unless otherwise expressly limited specifically.

In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integrally；Can be Mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two The connection of element internal or two interaction relationships of element, unless otherwise clearly restriction.For the common skill of this area For art personnel, concrete meaning of the above-mentioned term in the utility model can be as the case may be understood.

In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score Can be the first and second feature directly contacts, or the first and second features are by intermediary mediate contact.And, first is special Levy second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be with Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height less than second feature.

It should be noted that when element is referred to as " being fixed on " or " being arranged at " another element, it can be directly another On one element or can also there is element placed in the middle.When an element is considered as " connection " another element, it can be with It is directly to another element or may be simultaneously present centering elements.Term as used herein " vertical ", " level ", " on ", D score, "left", "right" and similar statement for illustrative purposes only, it is unique implementation to be not offered as Mode.

Fig. 1 is referred to, for example, a kind of brake cacophonia detection caution device 10 includes bearing assembly 110, simulated assembly 120 and detection components 130, in the present embodiment, brake cacophonia detection caution device 10 is arranged on the special trench for repairing In, wherein, bearing assembly 110 is used to support the automobile of Awaiting Overhaul, and simulated assembly 120 is used to aid in detection components 130 to be checked The automobile repaiied is detected.The automobile of such as Awaiting Overhaul sails bearing assembly 110 into towards special trench, and simulated assembly 120 starts, and leads to The position of the automobile of the whole simulated assembly 120 of toning and Awaiting Overhaul so that detection components 130 can preferably to the automobile of Awaiting Overhaul Detected.

Fig. 2 is referred to, bearing assembly 110 includes loading plate 111, the first motor 112, two support bars 113, the second motor 114 and support frame 115, loading plate 111 is connected with support frame 115, and with reference to Fig. 1 and Fig. 2, loading plate 111 offers gathering hole 1111, gathering hole 1111 is used to wear support bar 113.First motor 112, two support bars 113 and the second motor 114 are arranged at On support frame 115；And for example, the first motor 112, two support bars 113 and the second motor 114 are separately positioned on support frame 115.Example Such as, the support bar is used to support the wheel of vehicle to be checked, and and for example, the support bar is loop bar, for the band in the first motor Dynamic lower lifting.

Simulated assembly 120 includes two position-limited wheels 121 and test device 122, and position-limited wheel 121 is arranged on support bar 113.Example Such as, position-limited wheel 121 is arranged on the top of support bar 113, and two position-limited wheels support a wheel and limit its displacement jointly.For example, surveying Trial assembly is put 122 and is arranged on support frame 115.In the present embodiment, the first motor 112 is connected with two support bars 113 respectively.For example, First motor 112 is connected with two support bars 113 respectively by reductor, to reduce the output speed of the first motor.Two support bars 113 pass through gathering hole 1111, and the end of each support bar 113 is provided with a position-limited wheel 121.For example, the second motor 114 and test Device 122 is connected, and and for example, the second motor 114 is connected by reductor with test device 122, to reduce the output of the second motor Rotating speed, and test device 122 is between two position-limited wheels 121.For example, the height of two position-limited wheel highest points, higher than test device The height of highest point, avoids damage to test device during to test；For example, the height of position-limited wheel highest point and test device highest The difference of the height at place is 2~10 centimetres, such as 5 centimetres etc..

Fig. 3 is referred to, detection components 130 include induction module 131 and Main Processor Unit 132, and induction module 131 includes sense Device 1311 and pretreatment circuit 1312 are answered, for example, inductor 1311 and pretreatment circuit 1312 are electrically connected with；And for example, inductor 1311 connect with the pretreatment communication of circuit 1312.In the present embodiment, inductor 1311 is arranged in the test device 122, is used The abnormal sound noise produced when Awaiting Overhaul vehicle braking brake slows down is collected in sensing, abnormal sound noise is changed into electric signal, and by Pretreatment 1312 pairs of electric signals of circuit are processed, and generate abnormal sound noise signal.

Main Processor Unit 132 includes signal processing circuit 1321 and siren 1322.For example, the He of signal processing circuit 1321 Siren 1322 is electrically connected with；And for example, signal processing circuit 1321 and the communication connection of siren 1322.In the present embodiment, pre- place Reason circuit 1312 and signal processing circuit 1321 are communicated and are connected, and for receiving and process abnormal sound noise signal.In the present embodiment, in advance Process circuit 1312, signal processing circuit 1321 and siren 1322 are arranged on support frame 115.

Above-mentioned brake cacophonia detects caution device 10, is repaired to be checked by bearing assembly 110 and simulated assembly 120 After built on stilts, after Awaiting Overhaul vehicle launch, two position-limited wheels 121 and test device 122 treat maintenance vehicle be simulated it is real Surface conditions, the abnormal sound noise produced when now the collection Awaiting Overhaul vehicle braking brake of inductor 1311 of detection components slows down is simultaneously Reach Main Processor Unit 132, the signal processing circuit 1321 pairs of the Main Processor Unit 132 abnormal sound noise signal is analyzed ratio Right, when noise is abnormal, siren 1322 sounds the alarm and reminds the brake system of the corresponding Awaiting Overhaul vehicle of test device 122 Move device abnormal to point out to be repaired.Detection mode convenient quickly, safety, the accuracy of judgement, improve the efficiency for repairing.

In the present embodiment, the overall structure that framework is presented of bearing assembly 110.For example, tabular of the loading plate 111 for cuboid Structure.Preferably, loading plate 111 is made of steel plate.In order to improve weight capacity, loading plate 111 has default thickness, holds Support plate 111 is provided with reinforcement towards the side of support frame 115.Preferably, reinforcement is connected with support frame 115.For example, carrying Plate 111 is the platy structure of cuboid.For example, loading plate 111 includes opposite mounting surface and contact surface, support frame 115 is installed In on mounting surface side.

In order to preferably set support, for example, support frame is frame structure.For example, the bottom of support frame is provided with fixation Pin.For example, fixed pin is provided with reinforcement.For example, the bottom of support frame has been wholely set fixed pin.Preferably, pin is fixed Bottom is provided with cushion.The pin for example, cushion is coated and fixed.In the present embodiment, the plate that cushion is made for silica gel material Shape structure.So, when support frame is placed on Special station by maintenance personal, cushion can play damping, to reduce The Data Collection precision of the vibrations stray pick-up of automobile, so can preferably carry out the collection of data.

The abnormal sound noise produced when Awaiting Overhaul vehicle braking brake slows down is collected in order to preferably process inductor 1311, please Refering to Fig. 4, for example, pretreatment circuit 1312 include signal amplification circuit 401, the first A/D converter 402, controller 403, The power module 405 of wireless launcher 404 and first.With reference to Fig. 3 and Fig. 4, in the present embodiment, signal amplification circuit 401 is distinguished It is electrically connected with the A/D converter 402 of inductor 1311 and first, controller 403 is electric with wireless launcher 404, first respectively The A/D converter 402 of source module 405 and first is electrically connected with；The wireless launcher 404 is logical with the signal processing circuit News connection.First power module 405 is used to unify to power to controller 403.

Fig. 5 is referred to, for example, signal processing circuit 1321 includes processor 501, wireless receiver 502, the second analog Converter 503, power amplification circuit 504, input touch-screen 505 and second source module 506.Processor 501 respectively with nothing Line receiver 502, the second A/D converter 503, input touch-screen 505 and second source module 506 are electrically connected with, power Amplifying circuit 504 is electrically connected with the second A/D converter 503 and siren 1322 respectively；The wireless launcher 404 with The communication connection of the wireless receiver 502.

So, in the presence of the modules of above-mentioned pretreatment circuit 1312 and signal processing circuit 1321, can be with Preferably treatment inductor 1311 collects the abnormal sound noise produced when Awaiting Overhaul vehicle braking brake slows down, and is warned when noise is abnormal Report device 1322 sounds the alarm and reminds the braking device of the corresponding Awaiting Overhaul vehicle of test device 122 abnormal to point out to answer Repaired.Detection mode convenient quickly, safety, the accuracy of judgement, improve the efficiency for repairing.

Referring to Fig. 2, for the ease of control bearing assembly, simulated assembly and detection components, for example, brake sound is different Often detection caution device also includes switch cubicle 280 and display device 290, and switch cubicle 280 and display device 290 are separately mounted to branch On support, and switch cubicle 280 and display device 290 are connected with processor respectively.So, in that context it may be convenient to unified by processor Control bearing assembly, simulated assembly and detection components, are detected with the automobile preferably to Awaiting Overhaul.

For the ease of power taking, for example, the first power module includes the first power circuit and the first attaching plug that are connected, First power circuit is also electrically connected with controller.For example, second source module includes the second source circuit that is connected and the Two attaching plugs, second source circuit is also electrically connected with processor.For example, the first power circuit and second source circuit are equal Rectifier, transformer etc. are provided with, to meet the power demands of the parts such as bearing assembly, simulated assembly and detection components.

It should be noted that inductor is sensor, for example it can be vibrating sensor, can also according to detection needs It is sound transducer, signal amplification circuit uses LM324 integrated operational amplifiers.First A/D converter using AD574 moulds/ Number converter.Controller is single-chip microcomputer, and for example controller uses the flash type single-chip microcomputers STC89C55RD of STC Corporation.Wireless hair Emitter uses the WC-01 type bluetooth modules of Wei Chen scientific ＆ technical corporation.First power module includes supply unit and electric power management circuit, Supply unit uses dry cell, can also use rechargeable battery, and electric power management circuit is LM1117-3.3 electric power management circuits.Sensing The output end of device is connected with the input of LM324 integrated operational amplifiers, the output end of LM324 integrated operational amplifiers with The input of AD574 A/D converters is connected, output end and the flash type single-chip microcomputers of AD574 A/D converters The input of STC89C55RD is connected, and the output end of flash type single-chip microcomputers STC89C55RD is connected with WC-01 type bluetooth modules, LM1117-3.3 electric power management circuits are connected with dry cell and flash type single-chip microcomputers STC89C55RD respectively.

In one embodiment, siren is loudspeaker.Wireless data receiver uses the WC-01 type bluetooths of Wei Chen scientific ＆ technical corporation Module, processor uses the S3C44B0 signal processors of Samsung, the second A/D converter to use the AD558 of AD companies D/A converter, power amplification circuit uses the HA13159 power amplifiers of Hitachi, Ltd, supply unit 13 to use dry cell, Also 12 volts of vehicle powers can be used, second source module is LM1117-3.3 electric power management circuits.

For example, processor output end, the input of AD558 D/A converters, LCD respectively with WC-01 type bluetooth modules The input of display, LM1117-3.3 electric power management circuits, keyboard group are connected, the input of HA13159 power amplifiers with The output end of AD558 D/A converters is connected, and its output end is connected with the input of loudspeaker, LM1117-3.3 power managements Circuit is connected with dry cell.

Also referring to Fig. 2 and Fig. 6, in an embodiment, loading plate 111 has four operative positions 610 of rectangular distribution, Each operative position 610 offers a gathering hole 1111.Simulated assembly 120 includes eight support bars, 113, eight position-limited wheels 121, four The test device 122 of support bar 113, four of individual test device 122, eight is arranged on support frame 115.Each two support bar 113 is one group of support bar 113, and each two position-limited wheel 121 is one group of position-limited wheel 121, one group of one operative position of correspondence of support bar 113 610。

First motor 112 is connected with eight support bars 113 respectively by reductor, and the end of each support bar 113 passes through One gathering hole 1111 is simultaneously provided with a position-limited wheel 121, and the second motor 114 is connected with four test devices 122 respectively by reductor Connect, and each test device 122 is located between one group of two position-limited wheel 121 of position-limited wheel 121.Induction module 131 includes four Inductor 1311 and the pretreatment circuit 1312 being electrically connected with each inductor 1311 respectively, the correspondence of each inductor 1311 are pacified In a test device 122.Main Processor Unit 132 include signal processing circuit 1321 and respectively with signal processing circuit 1321 Four sirens 1322 being electrically connected with.

So, after Awaiting Overhaul vehicle launch, two position-limited wheels and test device treat maintenance vehicle and are simulated real road Face situation, each inductor correspondence is arranged in a test device, so that disposably four wheels to vehicle are detected, Each inductor collects the abnormal sound noise that is produced when Awaiting Overhaul vehicle braking brake slows down and reaches Main Processor Unit, main process task The signal processing circuit of unit is analyzed comparison to the abnormal sound noise signal, and when noise is abnormal, siren sounds the alarm and carries Wake up the test device corresponding Awaiting Overhaul vehicle braking device it is abnormal to point out to be repaired.The detection mode has pin To property, convenient quickly, safety, accuracy of judgement, the efficiency for repairing is improve.

For example, gathering hole has predetermined width.Preferably, the volume that the predetermined width of gathering hole is more than between two support bars is wide Degree.Support bar so can be preferably set.

For example, support frame is provided with four guide rails and four motors, one group of support bar is correspondingly arranged in a guide rail On, each guide rail correspondence is connected with a motor.So can be according to the detection case of design adjustment support bar and branch The position relationship of support, preferably to detect vehicle to be repaired.

Also referring to Fig. 2, Fig. 7 and Fig. 8, in an embodiment, test device 122 includes telescopic block 710, deceleration device 720 and transmission device 730, telescopic block 710 is connected by transmission device 730 with deceleration device 720, deceleration device 720 and second Motor 114 is connected.For example, inductor 1311 is arranged in telescopic block 710.For example, deceleration device is removably disposed in support On frame.So, the wheel of Awaiting Overhaul vehicle is located between two position-limited wheels and is contacted with telescopic block, after Awaiting Overhaul vehicle launch, Two position-limited wheels and telescopic block treat maintenance vehicle and are simulated real surface conditions, and now the inductor of detection components is collected and treated Abnormal sound noise that maintenance vehicle braking brake is produced when slowing down simultaneously reaches Main Processor Unit, the signal processing circuit of Main Processor Unit Comparison is analyzed to the abnormal sound noise signal, siren sounds the alarm when noise is abnormal, and prompting test device is corresponding to be somebody's turn to do The braking device of Awaiting Overhaul vehicle is abnormal pointing out to be repaired.The detection mode can real surface conditions so that The result of detection is scientific and reasonable, while detection mode convenient quickly, safety, the accuracy of judgement, improve the efficiency for repairing.

Preferably to set test device, for example, test device also includes housing, housing is arranged on support frame, is slowed down Device is arranged in housing, and the second motor is used to operationally drive telescopic block to move reciprocatingly.For example, housing is provided with cavity And the telescopic mouth of connection cavity, telescopic block is arranged in telescopic mouth and is partially housed in cavity.So can be by housing Realize that telescopic block is preferably moved, preferably to set test device.

Also referring to Fig. 9 and Figure 10, in an embodiment, brake cacophonia detection caution device includes guide 900, guide 900 is connected with the bearing assembly 110, and guide 900 is arranged on the side of loading plate 111, for drawing Lead driver exactly to sail on loading plate 111 automobile of Awaiting Overhaul into, and cause the vehicle frame and support bar of the automobile of Awaiting Overhaul 113 is corresponding, so as to rapidly the automobile of Awaiting Overhaul can be sailed on loading plate 111 and under the support of support bar 113 and will treated The automobile of maintenance is supported from loading plate 111, consequently facilitating further the automobile to Awaiting Overhaul is overhauled.

In the present embodiment, guide 900 includes two expansion links 910, the convex lens 930 of reflecting plate 920 and two.Two stretch Bar 910 be arranged in parallel installed in the side of loading plate 111.Preferably, expansion link 910 is detachably connected with loading plate 111.It is flexible The end of bar 910 is connected with reflecting plate 920, and for example two expansion links 910 are arranged on the base region of reflecting plate 920.Reflecting plate 920 The side of loading plate 111 is provided with plane mirror.Two convex lens 930 are separately positioned on the both sides of reflecting plate 920, i.e., instead Penetrate each side of plate 920 and be correspondingly arranged on a convex lens 930.Preferably, convex lens 930 are rotated with reflecting plate 920 and are connected.

So, when driver drives to sail loading plate 111 into from the side away from guide 900 of loading plate 111, car Can be observed by 920 and two convex lens of reflecting plate 930 with the position relationship of loading plate 111 and learnt, wherein, reflecting plate The 920 overall positions relations that can on the whole reflect vehicle and loading plate 111, two convex lens 930 can observe vehicle with The position relationship of the object in the outside of loading plate 111, preferably can so sail on loading plate 111 automobile of Awaiting Overhaul into, together When it also avoid the automobile of Awaiting Overhaul and the grazing of external object, be effectively improved Measuring error efficiency.

Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, the scope of this specification record is all considered to be.

Embodiment described above only expresses several embodiments of the present utility model, and its description is more specific and detailed, But therefore can not be interpreted as the limitation to utility model patent scope.It should be pointed out that for the common skill of this area For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to Protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.

Claims (6)

1. a kind of brake cacophonia detects caution device, it is characterised in that including：

Bearing assembly, the bearing assembly includes loading plate, the first motor, two support bars, the second motor and support frame, described to hold Support plate is connected with support frame as described above, and the loading plate offers gathering hole；

Simulated assembly, the simulated assembly includes two position-limited wheels and test device, first motor, the support bar, two institutes State test device and second motor is arranged on support frame as described above；

First motor is connected with support bar described in two respectively, and support bar described in two passes through the gathering hole, each branch The end of strut is provided with position-limited wheel described in, and the test device is located between position-limited wheel described in two；

The test device includes telescopic block, deceleration device and transmission device, and the telescopic block passes through the transmission device and institute State deceleration device connection, the deceleration device and second motor connection；

Detection components, the detection components include induction module and Main Processor Unit, and the induction module includes what is be electrically connected with Inductor and pretreatment circuit, the inductor are arranged in the telescopic block,

The Main Processor Unit includes the signal processing circuit and siren, the pretreatment circuit and the signal that are electrically connected with Process circuit communication connection, the pretreatment circuit, the signal processing circuit and the siren are arranged on support frame as described above On.

2. brake cacophonia according to claim 1 detects caution device, it is characterised in that the loading plate is rectangular The platy structure of body.

3. brake cacophonia according to claim 2 detects caution device, it is characterised in that the loading plate includes phase The mounting surface and contact surface of the back of the body, support frame as described above are installed on the mounting surface side.

4. brake cacophonia according to claim 3 detects caution device, it is characterised in that the deceleration device is removable It is arranged on support frame as described above with unloading.

5. brake cacophonia according to claim 4 detects caution device, it is characterised in that the test device is also wrapped Housing is included, the housing is arranged on support frame as described above, and the deceleration device is arranged in the housing, second motor is used Moved reciprocatingly in the telescopic block is operationally driven.

6. brake cacophonia according to claim 5 detects caution device, it is characterised in that the housing is provided with chamber The telescopic mouth of body and the connection cavity, the telescopic block is arranged in the telescopic mouth and is partially housed in the cavity In.