CN112683534A - Noise detection device for automobile hub bearing and detection method thereof - Google Patents
Noise detection device for automobile hub bearing and detection method thereof Download PDFInfo
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- CN112683534A CN112683534A CN202011510275.1A CN202011510275A CN112683534A CN 112683534 A CN112683534 A CN 112683534A CN 202011510275 A CN202011510275 A CN 202011510275A CN 112683534 A CN112683534 A CN 112683534A
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Abstract
The invention relates to a noise detection device for an automobile hub bearing and a detection method thereof, and the noise detection device comprises a hanger plate, a hydraulic rod and a fixed block, wherein the hydraulic rod is fixedly arranged below the hanger plate, the fixed blocks are fixedly arranged on the front surface and the rear surface of the hydraulic rod, the connecting discs are welded on the surface of the fixed block, a push plate is fixedly connected below the hydraulic rod, the central axes of the hydraulic rod and the push plate are on the same straight line, the noise condition of a bearing body when an automobile runs on a bumpy road section can be simulated by using a steel wire rope on the device, so that the detection is carried out by matching with a noise detector, the pressures borne by the rotating rod below extrusion blocks at each part are different, the pressure can be tested by placing the rotating rod and the bearing body at different positions, and the device can carry out multi-directional pressure adjustment and noise test under the condition of saving cost, the rotating rod can be automatically compressed or loosened when the hydraulic rod stretches, and the practicability of the device is improved.
Description
Technical Field
The invention relates to the technical field of bearing detection, in particular to noise detection equipment for an automobile hub bearing and a detection method thereof.
Background
The bearing is the inside indispensable spare part of vehicle, and the security when the quality problem of bearing seriously influences the car and marchs, therefore automobile wheel hub bearing is after production is accomplished, need inspect the product quality of bearing, detects automobile wheel hub's noise usually, need use automobile wheel hub bearing's noise check out test set.
However, the existing automobile bearing detection device has the following problems:
a high precision bearing noise detection device as in patent No. CN202010040213.2, comprising a base 1, a bearing fixing component 2, a silencing support seat component 3, a noise detection component 4, an upper cover component 5, a hinge 6, a rotation driving component 7 and a silencing cover shell component 8; the noise reduction device comprises a base 1, a noise reduction housing assembly 8, an upper cover assembly 5, a rotary driving assembly 7, a bearing fixing assembly 2, a bearing 9 and a noise reduction supporting seat assembly, wherein the base 1 is horizontally arranged, the noise reduction housing assembly 8 is arranged above the base 1 and is connected with the upper end of the base 1 through a noise reduction supporting seat assembly 3, the upper cover assembly 5 is arranged at the upper part of the noise reduction housing assembly 8, one end of the upper cover assembly 5 is connected with the noise reduction housing assembly 8 through a hinge 6, the bearing fixing assembly 2 is arranged inside the noise reduction housing assembly 8, the noise detection assembly 4 penetrates through one side of the noise reduction housing assembly 8, the rotary driving assembly 7 is arranged at one side of the noise reduction housing assembly 8 and at the upper end of the base 1, the bearing fixing assembly 2 is used for fixing the outer ring of the bearing 9 and drives the inner ring of the bearing 9; however, in the actual use process, the device can only reduce noise in detection, can only detect noise in a straight road section, and cannot detect noise of the automobile hub bearing according to the detection requirement, for example, when an automobile runs on a bumpy road section, the noise cannot be well detected in time, the application range is low, and the material cost consumed in detection is high.
In order to solve the problems, the invention provides a noise detection device for an automobile hub bearing and a detection method thereof.
Disclosure of Invention
(1) Technical problem to be solved
The invention aims to overcome the defects of the prior art, adapt to practical needs, and provide noise detection equipment for an automobile hub bearing and a detection method thereof so as to solve the technical problems.
(2) Technical scheme
In order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows:
the utility model provides a noise check out test set for automobile wheel hub bearing, includes hanger plate, hydraulic stem and fixed block, the below fixed mounting of hanger plate has the hydraulic stem, and the equal fixed mounting in surface has the fixed block around the hydraulic stem, the skin weld of fixed block has the connection pad, the below fixedly connected with push pedal of hydraulic stem, and the axis of hydraulic stem and push pedal is on same straight line.
Further, a groove is formed in the periphery of the surface of the connecting disc, the fixing rod is connected to the middle of the connecting disc in a rotating mode, a square clamping groove is formed in the fixing rod, the first spring is fixedly connected to the inside of the square clamping groove, and the clamping rod is slidably mounted inside the square clamping groove.
Further, the fixed surface of dead lever is provided with first vortex spring, the recess is at the equal angular distribution in the surface of connection pad, and the internal diameter of recess is greater than the terminal diameter in kelly right side to laminate mutually between the terminal outer wall in kelly left side and the inner wall of square draw-in groove, the kelly passes through and constitutes elastic construction between first spring and the dead lever.
Further, the tail end of the first vortex spring is fixedly connected with a first traction steel rope, the right side of the fixing rod is fixedly connected with a second traction steel rope, the front end of the second traction steel rope is mutually overlapped with the tail end of the first traction steel rope through the fixing rod and the first vortex spring, and the fixing rod is in a clamping structure with the connecting disc through a clamping rod and a groove.
Further, the inside of push pedal is run through and is provided with spacing post, and the below fixedly connected with installation piece of spacing post to the below fixed mounting of installation piece has the connecting rod, the below fixed mounting at the positive position of push pedal has the overlap joint board, and the equal bearing in both ends installs the gear around the overlap joint board to fixedly connected with second vortex spring between gear and the overlap joint board, spacing post, installation piece and connecting rod formula structure as an organic whole, and intermeshing between installation piece and the gear, both sides and the left and right sides around the push pedal are located to spacing post symmetric distribution.
Furthermore, a first pressing block, a second pressing block, a third pressing block and a fourth pressing block are arranged below the mounting block, the first pressing block, the second pressing block, the third pressing block and the fourth pressing block correspond to each other through connecting rods, the first pressing block and the second pressing block are positioned at the front side of the third pressing block and the fourth pressing block, movable grooves are formed in the first pressing block, the second pressing block, the third pressing block and the fourth pressing block, rubber extrusion pads are fixedly connected below the first pressing block, the second pressing block, the third pressing block and the fourth pressing block, rotating rods are arranged below the rubber extrusion pads, bearing bodies are fixedly connected to the left side and the right side of each rotating rod, rubber bases are arranged below the rotating rods, a first opening is formed in the second pressing block, and a first connecting shaft is rotatably arranged on the inner wall of the first opening, and the outside of first connecting axle is twined and is provided with the third and pull the steel cable, the second opening has been seted up to the inside of first pressure according to the briquetting, and rotates on the open-ended inner wall of second and install the second connecting axle to the outside of second connecting axle is twined and is provided with the fourth and pull the steel cable, first pressure is pressed and all be provided with splint between briquetting and the second and third and fourth pressure briquetting.
Furthermore, a second spring is fixedly arranged inside the movable groove, the top end of the second spring is fixedly connected with the tail end of the connecting rod, the outer wall of the tail end of the connecting rod is matched with the inner wall of the movable groove, and the connecting rod and the first pressing block form an elastic structure through the second spring.
Further, the equal bolt fastening in the left and right sides of rubber base bottom has the double-shaft motor, and the equal fixed mounting in both ends has the runner about the double-shaft motor to the below of runner and bearing body is laminated mutually, the top of bearing body is provided with the noise detector.
Further, the threaded rod is installed to the screw thread between splint and the adjacent splint, and splint include outer fishplate bar, spout, inner connecting plate and gag lever post to inner connecting plate passes through to constitute extending structure between spout and the outer fishplate bar, both ends screw thread revolves to opposite around the threaded rod, splint pass through to constitute extending structure between threaded rod and the adjacent splint, outer fishplate bar passes through the overlap joint of each other between gag lever post and the adjacent outer fishplate bar, fourth traction steel cable and third traction steel cable all with the threaded rod between interconnect, and fourth traction steel cable and third traction steel cable are opposite in the winding direction on the threaded rod.
A detection method for noise detection equipment of an automobile hub bearing comprises the steps that before use, an inner connecting plate is lifted to the inside of an outer connecting plate through a sliding groove, then a rotating rod and a bearing body are placed on the surface of a rubber base, and at the moment, detection can be started, because two groups of mounting blocks, connecting rods and lapping plates are arranged on the front side and the rear side of a push plate, the rotating rod and the bearing body can be placed in one group of mounting blocks, connecting rods and lapping plates at the front end of the push plate for detection, and can also be placed in one group at the rear end for detection, because a rubber extrusion pad and the rubber base are made of rubber materials, when the rotating rod is pressed by a subsequent rubber extrusion pad, the rotating rod is stressed on the rubber base at the left end and the right end, the pressure borne by the bearing body when an automobile runs on a bumpy road section can be simulated by adjusting the stress conditions at the left end and the right end, so, the device adopts a method of fixing a rotating rod and detecting noise by rotating a bearing body, and is provided with two double-shaft motors and rotating wheels, wherein one double-shaft motor and one rotating wheel are respectively arranged under each group of installation blocks, connecting rods and lapping plates so as to detect the noise, the rotating wheels are driven by the double-shaft motors to rotate, the rotating wheels drive the bearing body to rotate on the rotating rod, so that the bearing body rotates when a simulated automobile travels, different pressures are applied to the left side and the right side of the rotating rod so as to further simulate different compression degrees of the left side and the right side of the automobile during the traveling process, a hydraulic rod below the hanging plate is extended, the hanging plate of the device is fixed on the top of a wall, the front end of the hydraulic rod pushes a push plate to move downwards, and as the shaft body on the side surface of a gear is connected with the lapping plates through a second scroll spring, the stiffness coefficient of the second vortex spring is large, so that a large pulling force needs to be provided when the gear rotates, when the front end of the hydraulic rod moves downwards, the mounting block can be driven to move downwards, and meanwhile, the second traction steel rope can be pulled, because the front end of the second traction steel rope is connected with the tail end of the first traction steel rope through the fixing rod and the first vortex spring, the first traction steel rope and the second traction steel rope are equivalent to have elasticity, the elasticity can be adjusted through the clamping structure, the adjusting step is as follows, firstly, the clamping rod is pulled to move forwards, the square block of the clamping rod in the middle of the connecting disc can stretch the first spring until the tail end on the right side of the clamping rod is completely separated from the groove in the connecting disc, at the moment, the whole clamping rod can be rotated through the fixing rod, the square clamping rod cannot rotate in the fixing rod, and the clamping rod is moved to the corresponding groove, at this time, the elasticity of the first scroll spring is changed, so that the elasticity of the elastic steel rope consisting of the first scroll spring, the first traction steel rope and the second traction steel rope is changed, the number of turns of the first traction steel rope pulling gear to rotate is also changed in the process of pressing down the front end of the hydraulic rod, and after the unit length of the hydraulic rod is changed, the number of turns of the gear to rotate is changed, the rotation direction of the gear at the front end of the push plate is clockwise rotation, and the rotation direction of the gear at the rear end of the push plate is counterclockwise rotation, so that under the action of the side wall rack of the mounting block, the connecting rod inside the first pressing block moves upwards, the connecting rod inside the second pressing block moves downwards, the connecting rod inside the third pressing block moves downwards, the connecting rod inside the fourth pressing block moves upwards, and the bearing body on the left side of the rotating rod is subjected to a larger pressure by the second pressing block and the third pressing block, the bearing body on the right side is less in pressure, so that bearing noise test work under different pressure degrees is carried out on the left end and the right end of the rotary rod through the structure, noise test work under different pressures can be carried out on the left end and the right end of the rotary rod through the front pressing block and the rear pressing block, the noise test work under different pressures can be carried out through the front pressing block and the rear pressing block, the hydraulic rod plays a role of four hydraulic rods equivalently, the purpose of carrying out efficient detection at low cost is achieved, and due to the fact that the mounting blocks and the gears are in meshing transmission, although moving directions of connecting rods in the first pressing block, the second pressing block, the third pressing block and the fourth pressing block are different, moving distances are the same, in the up-and-down moving process of the connecting rods, the first connecting shaft in the first opening and the second connecting shaft in the second opening can rotate the same number of turns, and therefore, the winding directions of the fourth traction steel rope and the third traction steel rope on the threaded rod are opposite, the threaded rod can rotate clockwise or anticlockwise along with the extension or the shortening of the hydraulic rod, the threaded rod is in threaded connection with the clamping plates, the outer connecting plate is in bearing connection with the limiting rod, so that the rotation of the threaded rod can drive the two adjacent clamping plates to move in opposite directions or move in opposite directions, the rotating rod can stably clamp, the rotating rod between the two adjacent inner connecting plates can automatically loosen in the process of shortening the hydraulic rod, after the loosening, the inner connecting plates are lifted up, the rotating rod is integrally moved to the position between the two adjacent inner connecting plates on the rear side of the rubber base, at the moment, the test work on the rotating rod is changed from the large left side to the small right side of the pressure to the large left side of the pressure, and then the test work on the large left side and the small right side of the pressure is carried out, the device can be used for carrying out adjustable tests of a plurality of positions through a single hydraulic rod, and then the noise of the hub bearing of the automobile when the automobile travels on a rugged road surface is simulated.
(3) Has the advantages that:
A. the invention is improved on the basis of the existing noise test, so that the whole device can realize the noise test work under different left and right degrees of pressure under the action of a single hydraulic rod, the mounting block can be driven to integrally move downwards in the extension process of the hydraulic rod, meanwhile, the front end of the hydraulic rod can drive the elastic steel ropes of the first vortex spring, the first traction steel rope and the second traction steel rope to pull the gear to rotate, the rotation speed of the gear is gradually reduced under the action of the first vortex spring and the second vortex spring, so that the device can slowly pressurize the left and right sides of the rotating rod, and under the action of the gear, the pressure of the first pressing block and the second pressing block on the left and right sides of the rotating rod has a certain difference value, the difference value changes along with the extension amount of the hydraulic rod, so that the device can adjust the pressure difference of the left and right sides of the rotating rod, the noise condition of the bearing body of the automobile running on a bumpy road section is simulated, and therefore the noise detector is matched for detection.
B. The front side and the rear side and the left side and the right side of the push plate are symmetrically provided with the limiting columns, each limiting column corresponds to each second pressing block, and the structures of the front side and the rear side of the device are the same, so that in the process of pressing the push plate, the left side and the right side of the pressure of the pressing structure formed by the first pressing block and the second pressing block are large, the left side and the right side of the pressure of the pressing structure formed by the third pressing block and the fourth pressing block are small, the pressure can be tested by placing the rotating rod and the bearing body at different positions, and the device can perform multidirectional pressure adjustment and noise test work under the condition of saving cost.
C. The side of the overlap joint pole of the device is provided with transmission structure, can pull the steel cable through the third and pull the steel cable pulling threaded rod through the fourth and rotate to the inner connecting plate to adjacent two is close to each other, makes the device can compress tightly the bull stick or relax through the hydraulic stem is automatic, has promoted the convenience that the device used.
D. The device's hydraulic stem surface still is provided with the block structure, can adjust the initial elasticity size of the elasticity steel cable of first vortex spring, first traction steel cable, second traction steel cable through the block structure on the device for behind the hydraulic stem extension unit length, gear revolve's number of turns can change, so that follow-up carries out more accurate regulation to the pressure of bull stick left and right sides, has promoted the precision that the device detected.
Drawings
FIG. 1 is a schematic view of the overall structure of a noise detection device for an automobile hub bearing according to the present invention;
FIG. 2 is an enlarged schematic view of a structure at A in FIG. 1 of the noise detection apparatus for an automobile hub bearing according to the present invention;
FIG. 3 is a schematic view of a connection structure of a fixing block and a connection disc of the noise detection device for the automobile hub bearing according to the present invention;
FIG. 4 is a schematic front view of a noise detection device for an automobile hub bearing according to the present invention;
FIG. 5 is an enlarged schematic view of a structure at B in FIG. 4 of the noise detection apparatus for an automobile hub bearing according to the present invention;
FIG. 6 is an enlarged schematic view of a structure at C in FIG. 4 of the noise detection apparatus for an automobile hub bearing according to the present invention;
FIG. 7 is a schematic view of a connecting structure of a connecting disc and a fixing rod of the noise detection device for the automobile hub bearing according to the present invention;
FIG. 8 is a schematic cross-sectional view of a connecting rod of the noise detection apparatus for an automobile hub bearing according to the present invention;
FIG. 9 is a schematic view of a cross-sectional view of a limiting post of the noise detection device for an automobile hub bearing according to the present invention;
fig. 10 is a schematic cross-sectional view of the lap plate side of the noise detection apparatus for an automobile hub bearing according to the present invention.
The reference numbers are as follows:
the device comprises a hanging plate 1, a hydraulic rod 2, a fixed block 3, a connecting disc 4, a groove 5, a fixed rod 6, a first spring 7, a square clamping groove 8, a clamping rod 9, a first vortex spring 10, a first traction steel rope 11, a second traction steel rope 12, a push plate 13, a limiting column 14, an installation block 15, a connecting rod 16, a lapping plate 17, a gear 18, a second vortex spring 19, a first pressing block 20, a second pressing block 21, a third pressing block 22, a fourth pressing block 23, a rubber extrusion pad 24, a rotating rod 25, a bearing body 26, a movable groove 27, a second spring 28, a rubber base 29, a double-shaft motor 30, a rotating wheel 31, a noise detector 32, a first opening 33, a first connecting shaft 34, a third traction steel rope 35, a second opening 36, a second connecting shaft 37, a fourth traction steel rope 38, a threaded rod 39, a clamping plate 40, an external connecting plate 401, a sliding groove 402, an internal connecting plate 403 and a limiting rod 404.
Detailed Description
The invention will be further illustrated with reference to the following figures 1 to 5 and examples:
a noise detection device for an automobile hub bearing comprises a hanger plate 1, a hydraulic rod 2 and a fixed block 3, wherein the hydraulic rod 2 is fixedly installed below the hanger plate 1, the fixed block 3 is fixedly installed on the front surface and the rear surface of the hydraulic rod 2, a connecting disc 4 is welded on the surface of the fixed block 3, a push plate 13 is fixedly connected below the hydraulic rod 2, the central axes of the hydraulic rod 2 and the push plate 13 are on the same straight line, a groove 5 is formed in the periphery of the surface of the connecting disc 4, a fixed rod 6 is rotatably connected in the middle of the connecting disc 4, a square clamping groove 8 is formed in the fixed rod 6, a first spring 7 is fixedly connected in the square clamping groove 8, a clamping rod 9 is slidably installed in the square clamping groove 8, and the fixed rod 6 can be driven to rotate on the connecting disc 4 through the clamping rod 9 which can slide;
in this embodiment, the fixed surface of dead lever 6 is provided with first vortex spring 10, recess 5 is in the equal angular distribution in surface of connection pad 4, and the internal diameter of recess 5 is greater than the terminal diameter in kelly 9 right side, and laminate mutually between the outer wall of kelly 9 left side end and the inner wall of square draw-in groove 8, kelly 9 constitutes elastic construction through between first spring 7 and the dead lever 6, can hold kelly 9 through the elastic construction on the device, make kelly 9 not keep the block state all the time by the circumstances of pulling.
In this embodiment, the end of the first scroll spring 10 is fixedly connected with a first traction steel rope 11, the right side of the fixing rod 6 is fixedly connected with a second traction steel rope 12, the front end of the second traction steel rope 12 is mutually overlapped with the end of the first scroll spring 10 and the first traction steel rope 11 through the fixing rod 6, the fixing rod 6 is in a clamping structure with the groove 5 and the connecting disc 4 through the clamping rod 9, the first scroll spring 10 can be tensioned through the clamping structure on the device, the initial elastic force of the first scroll spring 10 is adjusted, and the practicability of the device is improved.
In this embodiment, the inside of push pedal 13 runs through and is provided with spacing post 14, and the below fixedly connected with installation piece 15 of spacing post 14, and the below fixed mounting of installation piece 15 has connecting rod 16, the below fixed mounting at the middle position of push pedal 13 has lap strap 17, and gear 18 is installed to the equal bearing in both ends around lap strap 17, and fixedly connected with second vortex spring 19 between gear 18 and the lap strap 17, spacing post 14, installation piece 15 and connecting rod 16 formula structure as an organic whole, and intermeshing between installation piece 15 and the gear 18, spacing post 14 symmetric distribution is in both sides and the left and right sides around push pedal 13, can make the installation piece 15 of the device left and right sides carry out the vertical movement in the opposite direction through gear 18, convenient follow-up pressure is adjusted.
In this embodiment, a first pressing block 20, a second pressing block 21, a third pressing block 22 and a fourth pressing block 23 are disposed below the mounting block 15, the first pressing block 20, the second pressing block 21, the third pressing block 22 and the fourth pressing block 23 correspond to each other via the connecting rods 16, the first pressing block 20 and the second pressing block 21 are disposed at the front sides of the third pressing block 22 and the fourth pressing block 23, the first pressing block 20, the second pressing block 21, the third pressing block 22 and the fourth pressing block 23 are each provided with a movable groove 27 therein, a rubber pressing pad 24 is fixedly connected below the first pressing block 20, the second pressing block 21, the third pressing block 22 and the fourth pressing block 23, a rotating rod 25 is disposed below the rubber pressing pad 24, a bearing body 26 is fixedly connected to each of the left side and the right side of the rotating rod 25, and a rubber base 29 is disposed below the rotating rod 25, first opening 33 has been seted up to the inside of second press piece 21, and rotate on the inner wall of first opening 33 and install first connecting axle 34, and the outside winding of first connecting axle 34 is provided with third traction steel cable 35, second opening 36 has been seted up to the inside of first press piece 20, and rotate on the inner wall of second opening 36 and install second connecting axle 37, and the outside winding of second connecting axle 37 is provided with fourth traction steel cable 38, all be provided with splint 40 between first press piece 20 and the second press piece 21 and between third press piece 22 and the fourth press piece 23, can utilize splint 40 to stabilize centre gripping and fixed to bull stick 25, cooperation fourth traction steel cable 38 and third traction steel cable 35 reach the effect with the synchronous linkage of hydraulic stem 2.
In this embodiment, the second spring 28 is fixedly disposed inside the movable groove 27, the top end of the second spring 28 is fixedly connected with the end of the connecting rod 16, the outer wall of the end of the connecting rod 16 is matched with the inner wall of the movable groove 27, the connecting rod 16 forms an elastic structure with the first pressing block 20 through the second spring 28, the left end and the right end of the rotating rod 25 are pressed to different degrees by matching the expansion of the connecting rod 16 with the elastic structure of the device, and the practicability of the device is improved.
In this embodiment, the equal bolt fastening in the left and right sides of rubber base 29 bottom has double-shaft motor 30, and double-shaft motor 30 the equal fixed mounting in both ends has runner 31 about, and runner 31 and bearing body 26's below laminating mutually, and bearing body 26's top is provided with noise detector 32, thereby can drive runner 31 through double-shaft motor 30 and rotate and drive bearing body 26, and the simulation car is at the in-process bearing body 26 rotation of marcing, thereby carries out noise test work.
In this embodiment, a threaded rod 39 is threadedly mounted between the clamp plate 40 and the adjacent clamp plate 40, the clamp plate 40 includes an outer plate 401, a sliding groove 402, an inner plate 403 and a stopper rod 404, the inner plate 403 forms a telescopic structure with the outer plate 401 through the sliding groove 402, the threaded rod 39 has opposite front and rear ends in threaded directions, the clamp plate 40 forms a telescopic structure with the adjacent clamp plate 40 through the threaded rod 39, the outer plate 401 is overlapped with the adjacent outer plate 401 through the stopper rod 404, the fourth traction steel rope 38 and the third traction steel rope 35 are connected with the threaded rod 39, the fourth traction steel rope 38 and the third traction steel rope 35 have opposite winding directions on the threaded rod 39, the threaded rod 39 can be pulled to rotate through the fourth traction steel rope 38 and the third traction steel rope 35 having opposite winding directions on the left and right ends of the threaded rod 39, so as to automatically press or loosen the rotating rod 25, the convenience of the device use is promoted.
Before the detection method of the noise detection equipment for the automobile hub bearing is used, the inner connecting plate 403 is lifted to the inner part of the outer connecting plate 401 through the sliding groove 402, the rotating rod 25 and the bearing body 26 are placed on the surface of the rubber base 29, and then the detection work can be started, because the front side and the rear side of the push plate 13 are provided with the two groups of mounting blocks 15, the connecting rods 16 and the lapping plates 17, the rotating rod 25 and the bearing body 26 can be placed in the group of mounting blocks 15, the connecting rods 16 and the lapping plates 17 at the front end of the push plate 13 for detection, and can also be placed in the group at the rear end for detection, because the rubber extrusion pads 24 and the rubber base 29 are made of rubber materials, when the rotating rod 25 is pressed by the subsequent rubber extrusion pads 24, the rotating rod 25 is stressed at the left end and the right end of the rubber base 29, and the pressure borne by the bearing body 26 when an automobile runs on a bumpy road section can be simulated by adjusting, therefore, the noise detector 32 is used for detecting noise, the device adopts a method of fixing the rotating rod 25 and detecting noise by rotating the bearing body 26, firstly, the device is provided with two double-shaft motors 30 and a rotating wheel 31, one double-shaft motor 30 and a rotating wheel 31 are arranged under each group of mounting blocks 15, connecting rods 16 and lapping plates 17, so as to detect noise, the rotating wheel 31 is driven by the double-shaft motor 30 to rotate, the rotating wheel 31 drives the bearing body 26 to rotate on the rotating rod 25, so as to simulate the rotation of the bearing body 26 when an automobile travels, different pressures are applied to the left side and the right side of the rotating rod 25, so as to further simulate different compression degrees of the left side and the right side of the automobile in the traveling process, the hanging plate 1 of the device is fixed on the top of a wall by extending the hydraulic rod 2 below the hanging plate 1, so that the front end of the hydraulic rod 2 pushes the push plate 13 to move downwards, because the shaft body on the side of the gear 18 is connected with the lapping plate 17 through the second scroll spring 19, it should be noted that the stiffness coefficient of the second scroll spring 19 is large, so that a large pulling force needs to be provided when the gear 18 rotates, when the front end of the hydraulic rod 2 moves downwards, the mounting block 15 is driven to move downwards, and the second traction steel rope 12 is also pulled, because the front end of the second traction steel rope 12 is connected with the tail end of the first traction steel rope 11 through the fixing rod 6 and the first scroll spring 10, the first traction steel rope 11 and the second traction steel rope 12 have elasticity, and the elasticity can be adjusted through the clamping structure, the adjusting step is as follows, firstly, the clamping rod 9 is pulled to move forwards, so that the block of the clamping rod 9 located at the middle part of the connecting plate 4 can stretch the first spring 7, until the tail end of the right side of the clamping rod 9 completely disengages from the groove 5 in the connecting plate 4, at this time, the whole clamping rod 9 can be rotated through the fixing rod 6, the clamping rod 9 cannot rotate in the fixing rod 6 due to the square clamping groove 8, the clamping rod 9 is moved into the corresponding groove 5, at this time, the elasticity of the first scroll spring 10 can be changed, so that the elasticity of the elastic steel rope consisting of the first scroll spring 10, the first traction steel rope 11 and the second traction steel rope 12 is changed, therefore, in the process of pressing down the front end of the hydraulic rod 2, the number of turns of the first traction steel rope 11 pulling the gear 18 to rotate can also be changed, so as to change the number of turns of the gear 18 to rotate after the hydraulic rod 2 extends for a unit length, the rotation direction of the gear 18 at the front end of the push plate 13 is clockwise rotation, the rotation direction of the gear 18 at the rear end of the push plate 13 is counterclockwise rotation, therefore, under the action of the rack on the side wall of the mounting block 15, the connecting rod 16 in the first pressing block, the connecting rod 16 in the second pressing block 21 moves downwards, the connecting rod 16 in the third pressing block 22 moves downwards, the connecting rod 16 in the fourth pressing block 23 moves upwards, at this time, the bearing body 26 on the left side of the rotating rod 25 is subjected to a larger pressure and the bearing body 26 on the right side is subjected to a smaller pressure by the second pressing block 21 and the third pressing block 22, so that the bearing noise test work under different pressure degrees is performed on the left end and the right end of the rotating rod 25 by the structure, and the noise test work under different positions and different pressures can be performed by the front pressing block and the rear pressing block, which is equivalent to the effect of four hydraulic rods 2 by one hydraulic rod 2, thereby achieving the purpose of cost-saving and efficient detection, because the mounting block 15 and the gear 18 are in meshing transmission, the connecting rods 16 in the first pressing block 20, the second pressing block 21, the third pressing block 22 and the fourth pressing block 23 move in different directions, but the moving distances are the same, so that during the up-and-down movement of the connecting rod 16, the first connecting shaft 34 inside the first opening 33 and the second connecting shaft 37 inside the second opening 36 rotate the same number of turns, so that the third traction steel cable 35 and the fourth traction steel cable 38 pull the threaded rod 39 to rotate, the winding directions of the fourth traction steel cable 38 and the third traction steel cable 35 on the threaded rod 39 are opposite, the threaded rod 39 rotates clockwise or counterclockwise along with the extension or shortening of the hydraulic rod 2, because the threaded rod 39 and the clamping plate 40 are in threaded connection, and the external connecting plate 401 and the limiting rod 404 are in bearing connection, the rotation of the threaded rod 39 drives the adjacent two clamping plates 40 to move towards each other or move away from each other, so as to perform stable clamping operation on the rotating rod 25, and automatically loosen the rotating rod 25 between the adjacent two internal connecting plates 403 during the shortening of the hydraulic rod 2, after lax, go up interior fishplate bar 403 on hand, with bull stick 25 bodily movement to between the adjacent two inscribe fishplate bars 403 of rubber base 29 rear side, the test work to bull stick 25 from little to about pressure this moment, change the test of big to about pressure into, thereby the test work of the left and right sides under different pressure degree to bull stick 25, make the device can carry out the adjustable test of a plurality of positions and then the wheel hub bearing noise of car when the simulation car is marchd the road surface through single hydraulic stem 2.
The invention has the beneficial effects that:
the invention is improved on the basis of the existing noise test, so that the whole device can realize noise test work under different degrees of left and right under the action of a single hydraulic rod 2, the mounting block 15 can be driven to integrally move downwards in the extension process of the hydraulic rod 2, meanwhile, the front end of the hydraulic rod 2 can drive the elastic steel ropes of the first vortex spring 10, the first traction steel rope 11 and the second traction steel rope 12 to pull the gear 18 to rotate, the rotation speed of the gear 18 can be gradually reduced under the action of the first vortex spring 10 and the second vortex spring 19, so that the device can slowly pressurize the left and right sides of the rotating rod 25, and under the action of the gear 18, the pressures of the first pressing block 20 and the second pressing block 21 on the left and right sides of the rotating rod 25 have a certain difference, and the difference changes along with the extension amount of the hydraulic rod 2, therefore, the device can simulate the noise condition of the bearing body 26 when the automobile runs on a bumpy road section by adjusting the pressure difference between the left side and the right side of the rotating rod 25, and the noise condition is matched with the noise detector 32 for detection.
The front side, the rear side, the left side and the right side of the push plate 13 are symmetrically provided with the limiting columns 14, each limiting column 14 corresponds to each second pressing block 21, and the structures of the front side and the rear side of the device are the same, so that in the process of pressing the push plate 13, the pressure of the pressing structure formed by the first pressing block 20 and the second pressing block 21 is large on the left and large on the right, and the pressure of the pressing structure formed by the third pressing block 22 and the fourth pressing block 23 is large on the left and small on the right, and the pressure can be tested by placing the rotating rod 25 and the bearing body 26 at different positions, so that the device can carry out multidirectional pressure adjustment and noise test operation under the condition of saving cost.
The side of the bridging rod of the device is provided with a transmission structure, and can pull the threaded rod 39 to rotate through the third traction steel rope 35 and the fourth traction steel rope 38, thereby the inner connecting plates 403 at two adjacent positions are close to each other, the device can automatically compress or loosen the rotating rod 25 through the hydraulic rod 2, and the use convenience of the device is improved.
The device's 2 surfaces of hydraulic stem still are provided with the block structure, can adjust the initial elasticity size of the elasticity steel cable of first vortex spring 10, first traction steel cable 11, second traction steel cable 12 through the block structure on the device for behind the 2 extension unit length of hydraulic stem, 18 pivoted circles of gear can change, so that follow-up carries out more accurate regulation to the pressure of bull stick 25 left and right sides, has promoted the precision that the device detected.
The embodiments of the present invention are disclosed as the preferred embodiments, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention and make various extensions and changes without departing from the spirit of the present invention.
Claims (10)
1. The utility model provides a noise detection equipment for automobile wheel hub bearing, includes hanger plate (1), hydraulic stem (2) and fixed block (3), the below fixed mounting of hanger plate (1) has hydraulic stem (2), and the equal fixed mounting in surface has fixed block (3) around hydraulic stem (2), its characterized in that, the surface welding of fixed block (3) has connection pad (4), the below fixedly connected with push pedal (13) of hydraulic stem (2), and the axis of hydraulic stem (2) and push pedal (13) is on same straight line.
2. The noise detection device for the automobile hub bearing according to claim 1, characterized in that: the connecting disc is characterized in that a groove (5) is formed in the periphery of the surface of the connecting disc (4), a fixing rod (6) is connected to the middle of the connecting disc (4) in a rotating mode, a square clamping groove (8) is formed in the fixing rod (6), a first spring (7) is fixedly connected to the inside of the square clamping groove (8), and a clamping rod (9) is arranged inside the square clamping groove (8) in a sliding mode.
3. The noise detection device for the automobile hub bearing according to claim 2, characterized in that: the surface mounting of dead lever (6) is provided with first vortex spring (10), recess (5) are at the equal angular distribution in surface of connection pad (4), and the internal diameter of recess (5) is greater than the terminal diameter in kelly (9) right side to laminate each other between the outer wall of kelly (9) left side end and the inner wall of square draw-in groove (8), kelly (9) constitute elastic construction between through first spring (7) and dead lever (6).
4. The noise detection device for the automobile hub bearing according to claim 3, characterized in that: the end of the first vortex spring (10) is fixedly connected with a first traction steel rope (11), the right side of the fixing rod (6) is fixedly connected with a second traction steel rope (12), the front end of the second traction steel rope (12) is mutually overlapped with the end of the first traction steel rope (11) through the fixing rod (6) and the first vortex spring (10), and the fixing rod (6) is clamped with the connecting disc (4) through a clamping rod (9) and a groove (5).
5. The noise detection device for the automobile hub bearing according to claim 1, characterized in that: the utility model discloses a spacing post (14) of being provided with is run through to the inside of push pedal (13), and the below fixedly connected with installation piece (15) of spacing post (14) to the below fixed mounting of installation piece (15) has connecting rod (16), the below fixed mounting at push pedal (13) centre position has overlap joint board (17), and the equal bearing in both ends installs gear (18) around overlap joint board (17) to fixedly connected with second vortex spring (19) between gear (18) and overlap joint board (17), spacing post (14), installation piece (15) and connecting rod (16) formula structure as an organic whole, and intermeshing between installation piece (15) and gear (18), both sides and the left and right sides around push pedal (13) are in spacing post (14) symmetric distribution.
6. The noise detection device for the automobile hub bearing according to claim 5, characterized in that: a first pressing block (20), a second pressing block (21), a third pressing block (22) and a fourth pressing block (23) are arranged below the mounting block (15), the first pressing block (20), the second pressing block (21), the third pressing block (22) and the fourth pressing block (23) and connecting rods (16) of all the parts correspond to each other, the first pressing block (20) and the second pressing block (21) are positioned on the front sides of the third pressing block (22) and the fourth pressing block (23), movable grooves (27) are formed in the first pressing block (20), the second pressing block (21), the third pressing block (22) and the fourth pressing block (23), rubber extrusion pads (24) are fixedly connected below the first pressing block (20), the second pressing block (21), the third pressing block (22) and the fourth pressing block (23), and rotating rods (25) are arranged below the rubber extrusion pads (24), the improved steel wire rope press is characterized in that bearing bodies (26) are fixedly connected to the left side and the right side of the rotating rod (25), a rubber base (29) is arranged below the rotating rod (25), a first opening (33) is formed in the second press block (21), a first connecting shaft (34) is rotatably mounted on the inner wall of the first opening (33), a third traction steel wire rope (35) is wound on the outer side of the first connecting shaft (34), a second opening (36) is formed in the first press block (20), a second connecting shaft (37) is rotatably mounted on the inner wall of the second opening (36), a fourth traction steel wire rope (38) is wound on the outer side of the second connecting shaft (37), and clamping plates (40) are arranged between the first press block (20) and the second press block (21) and between the third press block (22) and the fourth press block (23).
7. The noise detection device for the automobile hub bearing according to claim 6, characterized in that: a second spring (28) is fixedly arranged in the movable groove (27), the top end of the second spring (28) is fixedly connected with the tail end of the connecting rod (16), the outer wall of the tail end of the connecting rod (16) is matched with the inner wall of the movable groove (27), and the connecting rod (16) and the first pressing block (20) form an elastic structure through the second spring (28).
8. The noise detection device for the automobile hub bearing according to claim 6, characterized in that: the left and right sides of rubber base (29) bottom all is bolted connection has double-shaft motor (30), and the equal fixed mounting in both ends has runner (31) about double-shaft motor (30) to the below of runner (31) and bearing body (26) is laminated mutually, the top of bearing body (26) is provided with noise detector (32).
9. The noise detection device for the automobile hub bearing according to claim 6, characterized in that: threaded rod (39) are installed to the screw thread between splint (40) and adjacent splint (40), and splint (40) are including outer fishplate bar (401), spout (402), internal connection board (403) and gag lever post (404), and constitute extending structure between spout (402) and outer fishplate bar (401) in internal connection board (403), both ends screw thread revolves to opposite around threaded rod (39), splint (40) pass through between threaded rod (39) and adjacent splint (40) and constitute extending structure, overlap joint each other between gag lever post (404) and adjacent outer fishplate bar (401) is passed through in outer fishplate bar (401), fourth traction steel cable (38) and third traction steel cable (35) all interconnect with threaded rod (39), and fourth traction steel cable (38) and third traction steel cable (35) are opposite in the winding direction on threaded rod (39).
10. The inspection method of noise inspection equipment for automobile hub bearings according to any one of claims 1 to 9, wherein before use, the inner joint plate (403) is lifted up to the inside of the outer joint plate (401) through the slide groove (402), and then the rotating rod (25) and the bearing body (26) are placed on the surface of the rubber base (29), at this time, inspection work can be started, since two sets of the mounting blocks (15), the connecting rod (16) and the bridging plate (17) are provided on the front and rear sides of the push plate (13), the rotating rod (25) and the bearing body (26) can be placed in one set of the mounting blocks (15), the connecting rod (16) and the bridging plate (17) at the front end of the push plate (13) for inspection, and can be placed in the other set at the rear end for inspection, since the rubber squeeze pad (24) and the rubber base (29) are both made of rubber, therefore, when the subsequent rubber extrusion pad (24) compresses the rotating rod (25), the left end and the right end of the rotating rod (25) are stressed on the rubber base (29), the stress condition of the left end and the right end can be adjusted to simulate the pressure on the bearing body (26) when the automobile runs on a bumpy road section, so that the noise detector (32) is used for detecting the noise, the rotating rod (25) is fixed, the bearing body (26) is rotated to detect the noise, firstly, the device is provided with two double-shaft motors (30) and rotating wheels (31), one double-shaft motor (30) and one rotating wheel (31) are arranged under each group of mounting blocks (15), connecting rods (16) and lapping plates (17) to detect the noise, the rotating wheels (31) are driven by the double-shaft motors (30) to rotate, and the rotating wheels (31) drive the bearing body (26) to rotate on the rotating rod (25), therefore, the rotation of a bearing body (26) is simulated when a vehicle travels, different pressures are applied to the left side and the right side of a rotating rod (25), the automobile is further simulated in the traveling process, the left side and the right side of the automobile are different in compression degree, the hydraulic rod (2) below the hanging plate (1) is extended, the hanging plate (1) of the device is fixed on the wall top, so that the front end of the hydraulic rod (2) pushes the push plate (13) to move downwards, the shaft body on the side surface of the gear (18) is connected with the lapping plate (17) through the second scroll spring (19), it needs to be explained that the stiffness coefficient of the second scroll spring (19) is large, so that a large tensile force needs to be provided when the gear (18) rotates, when the front end of the hydraulic rod (2) moves downwards, the mounting block (15) can be driven to move downwards, the second traction steel rope (12) can be pulled at the same time, and the front end of the second traction steel rope (12) is connected with the first traction steel rope (10) through the fixing rod ( The tail ends of the steel ropes (11) are connected, so that the first traction steel rope (11) and the second traction steel rope (12) are equivalent to elastic, the elastic force can be adjusted through a clamping structure, the adjusting step is as follows, firstly, the clamping rod (9) is pulled to move forwards, a square block of the clamping rod (9) located in the middle of the connecting disc (4) can stretch the first spring (7) until the tail end on the right side of the clamping rod (9) is completely separated from the groove (5) in the connecting disc (4), at the moment, the clamping rod (9) can be rotated integrally through the fixing rod (6), the clamping rod (9) cannot rotate in the fixing rod (6) through the square clamping groove (8), the clamping rod (9) is moved into the corresponding groove (5), at the moment, the elasticity of the first vortex spring (10) can be changed, and the elasticity of the elastic force formed by the first vortex spring (10), the first traction steel rope (11) and the second traction steel rope (12) is changed, therefore, in the process of pressing down the front end of the hydraulic rod (2), the number of turns of the gear (18) pulled by the first traction steel rope (11) is changed, so that after the unit length of the hydraulic rod (2) is changed, the number of turns of the gear (18) is changed, the direction of rotation of the gear (18) at the front end of the push plate (13) is clockwise, the direction of rotation of the gear (18) at the rear end of the push plate (13) is anticlockwise, therefore, under the action of the side wall rack of the mounting block (15), the connecting rod (16) inside the first pressing block (20) moves upwards, the connecting rod (16) inside the second pressing block (21) moves downwards, the connecting rod (16) inside the third pressing block (22) moves downwards, the connecting rod (16) inside the fourth pressing block (23) moves upwards, and the left bearing body (26) on the left side of the rotating rod (25) is subjected to larger pressure by the second pressing block (21) and the third pressing block (22), the right bearing body (26) is less stressed, so that the bearing noise test work under different pressure degrees is carried out on the left end and the right end of the rotating rod (25) through the structure, the noise test work under different positions and different pressures can be carried out through the front pressing block and the rear pressing block, the effect of four hydraulic rods (2) is achieved as the hydraulic rod (2), the aim of saving cost and carrying out efficient detection is achieved, the mounting block (15) and the gear (18) are in meshing transmission, therefore, although the moving directions of the connecting rods (16) in the first pressing block (20), the second pressing block (21), the third pressing block (22) and the fourth pressing block (23) are different, the moving distances are the same, and therefore in the process that the connecting rods (16) move up and down, the first connecting shaft (34) in the first opening (33) and the second connecting shaft (37) in the second opening (36) can rotate the same number of turns, thereby leading the third traction steel rope (35) and the fourth traction steel rope (38) to pull the threaded rod (39) to rotate, leading the winding directions of the fourth traction steel rope (38) and the third traction steel rope (35) on the threaded rod (39) to be opposite, leading the threaded rod (39) to rotate clockwise or anticlockwise along with the extension or the shortening of the hydraulic rod (2), leading the rotating rod (39) to drive the clamping plates (40) to move oppositely or move back to back due to the threaded connection between the threaded rod (39) and the clamping plates (40) and the connection between the outer connecting plate (401) and the limiting rod (404) which are connected by the bearings, leading the rotating rod (39) to rotate, further leading the rotating rod (25) between the inner connecting plates (403) at two adjacent positions to be loosened automatically in the process of shortening the hydraulic rod (2), and lifting the inner connecting plate (403) after the loosening, with bull stick (25) whole removal to between two adjacent fishplate bar (403) of rubber base (29) rear side, the little right in a left side of pressure is big to the test work of bull stick (25) this moment, change the big right in a left side test of pressure into, thereby to the test work of both sides under different pressure degree about bull stick (25), make the device can carry out the adjustable test of a plurality of positions and then the wheel hub bearing noise of simulation car when the road surface of the frustration is marchd through single hydraulic stem (2).
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| CN118500765A (en) * | 2024-07-18 | 2024-08-16 | 南昌工学院 | Automobile transmission system fault test system and method |
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Effective date of registration: 20221013 Address after: 130000 Room 101, building 2, No. 539, Zhuoyue East Street, high tech Development Zone, Changchun City, Jilin Province Applicant after: CHANGCHUN ZHONGSHENG TECHNOLOGY CO.,LTD. Address before: 266000 No.68, Su Village, dianzi Town, Pingdu City, Qingdao City, Shandong Province Applicant before: Wu Xiaoqing |
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Denomination of invention: A noise detection device and detection method for automotive wheel hub bearings Granted publication date: 20221101 Pledgee: Bank of China Limited Changchun Jinyu sub branch Pledgor: CHANGCHUN ZHONGSHENG TECHNOLOGY CO.,LTD. Registration number: Y2024220000089 |