Differential lock assembly run-out detection device

Abstract

The utility model provides a jumping detection device for a differential lock assembly. Comprising a rack slidably arranged on a workbench, a first detection mechanism used for detecting bearing runout of a differential lock assembly, a second detection mechanism used for detecting radial runout of the differential lock assembly, a supporting mechanism used for supporting different types of differential lock assemblies, and a driving mechanism used for driving the differential lock assembly to rotate. The first detection mechanism and the second detection mechanism are both arranged on the rack, and the first detection mechanism and the second detection mechanism are oppositely arranged; a space capable of containing the supporting mechanism is formed in the middle of the rack, and the supporting mechanism is fixedly arranged on the workbench and located between the first detection mechanism and the second detection mechanism; the driving mechanism is arranged on the rack in a sliding mode in the Z-axis direction, and the driving mechanism is located above the supporting mechanism. The differential lock assembly runout detection device is suitable for runout detection of differential lock assemblies of different models, and the detection efficiency and accuracy are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile transmission component detection, in particular to a differential lock assembly jump detection device. Background Art

[0002] During vehicle operation, the differential assembly maintains the speed difference between the left and right drive wheels. If the vehicle's wheels slip under certain conditions, such as when stuck in mud or snow, the differential lock tightens the differential to free the wheels. A split differential lock assembly primarily consists of axle gears, axle gears, planetary gears, a sliding sleeve, an electromagnetic coil, and the differential housing and cover. During differential lock assembly, post-assembly runout of the housing and cover directly affects the assembly of the large plate gears. Therefore, differential lock runout detection is a core step in the assembly process.

[0003] In the prior art, the patent number is "ZL202122486245.8", and the name is "A differential assembly circular runout detection tool", which specifically discloses "including a base, the base is provided with a support mechanism for supporting the differential assembly, an axial locking mechanism for relatively fixing the differential assembly and the support mechanism in the axial direction, a circumferential locking mechanism for relatively fixing the housing of the differential assembly and the support mechanism in the circumferential direction, and a detection mechanism for detecting the circular runout value of the differential assembly when rotating the gear structure of the differential assembly, the support mechanism, the axial locking mechanism, the circumferential locking mechanism and the detection mechanism are all detachably connected to the base". This utility model is not compatible with the runout detection of multiple models of differential lock assemblies. When detecting different models of differential lock assemblies, different roller brackets need to be replaced to correspond to them, which reduces the detection efficiency. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a differential lock assembly runout detection device capable of detecting axial runout and radial runout of differential locks of different models.

[0005] The utility model proposes a differential lock vibration detection device, comprising a frame slidably arranged on a workbench, a first detection mechanism for detecting the vibration of the bearing of the differential lock assembly, a second detection mechanism for detecting the radial vibration of the differential lock assembly, a support mechanism for supporting different types of differential lock assemblies and a driving mechanism for driving the differential lock assembly to rotate, the first detection mechanism and the second detection mechanism are both arranged on the frame, and the first detection mechanism and the second detection mechanism are arranged opposite to each other; a space for accommodating the supporting mechanism is provided in the middle of the frame, the supporting mechanism is fixed on the workbench, and the supporting mechanism is located between the first detection mechanism and the second detection mechanism; the driving mechanism is slidably arranged on the frame along the Z-axis direction, and the driving mechanism is located above the supporting mechanism, and when the driving mechanism moves downward until it cooperates with the housing of the differential lock assembly, the driving mechanism drives the differential lock assembly to rotate.

[0006] Preferably, the support mechanism includes a base, a first roller bracket and a second roller bracket for placing the differential lock assembly, the first roller bracket is fixed to one end of the base, the second roller bracket is slidably arranged on the base and is arranged opposite to the first roller bracket, and the axis center lines of the first roller bracket and the second roller bracket coincide.

[0007] Preferably, the support mechanism further includes a first driving part, which is fixed on the base and located at an end away from the first roller bracket. The first driving part drives the second roller bracket to move axially to a predetermined position by pushing the differential lock assembly.

[0008] Preferably, a detection device for detecting the angular position of the differential lock assembly is provided on the base, and the detection device is arranged between the first roller bracket and the second roller bracket.

[0009] Preferably, the first detection mechanism includes a second driving part and a first detection part, the second driving part is arranged on the frame along the X-axis direction, the first detection part is arranged on the second driving part, and the second driving part drives the first detection part to perform telescopic movement along the X-axis direction; the first detection part abuts against the housing of the differential lock assembly along the X-axis direction to detect radial runout of the differential lock assembly.

[0010] Preferably, the second detection mechanism includes a third driving part, a fourth driving part and a second detection part, the third driving part is arranged on the frame along the X-axis direction, the fourth driving part is slidably arranged on the third driving part along the Y-axis direction, and the third driving part drives the fourth driving part to move along the X-axis direction; the second detection part is arranged on the fourth driving part, and the fourth driving part drives the second detection part to move along the Y-axis direction until the second detection part abuts against the end face of the housing of the differential lock assembly to detect the axial runout of the differential lock assembly.

[0011] Preferably, the driving mechanism includes a moving part, a fifth driving part and a synchronous belt driving device, the fifth driving part is fixed on the frame, the moving part is slidably arranged on the frame along the Z-axis direction, and the moving part is connected to the fifth driving part, and the synchronous belt driving device is arranged on the moving part; the fifth driving part drives the moving part to move downward to drive the synchronous belt driving device to cooperate with the housing of the differential lock assembly, and the synchronous belt driving device drives the differential lock assembly to rotate.

[0012] Preferably, the second roller bracket is provided with a locking member for fixing the second roller bracket at a predetermined position.

[0013] Preferably, the first roller bracket and the second roller bracket are both provided with arc grooves for preventing the differential lock assembly from falling.

[0014] Preferably, the frame is arranged in a gantry style.

[0015] As described above, the differential lock assembly vibration detection device of the present invention has the following beneficial effects:

[0016] The present invention places different types of differential lock assemblies on a support mechanism, and the differential lock assembly can rotate around the axis of the support mechanism. Under the action of the driving device, the frame drives the first detection mechanism, the second detection mechanism, and the driving mechanism to move toward the differential lock assembly until a predetermined position. The first detection mechanism contacts the housing of the differential lock assembly, the second detection mechanism contacts the end face of the housing of the differential lock assembly, and the driving mechanism moves downward until it mates with the housing of the differential lock assembly. The driving mechanism drives the differential lock assembly to rotate at a constant speed for a predetermined number of circles and angles, and then the axial runout of the differential lock assembly is measured by the first detection mechanism, while the radial runout of the differential lock assembly is measured by the second detection mechanism. The present invention is applicable to the detection of axial runout and radial runout of differential locks of different types, effectively improving the efficiency and accuracy of differential lock assembly runout measurement, and reducing the risk of unqualified products flowing out. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a three-dimensional schematic diagram of the differential lock assembly vibration detection device provided by the utility model.

[0018] Figure 2 This is a three-dimensional schematic diagram of the support mechanism provided by the utility model.

[0019] Description of reference numerals:

[0020] 100, frame; 200, first detection mechanism; 210, second drive unit; 220, first detection unit; 300, second detection mechanism; 310, third drive unit; 320, fourth drive unit; 330, second detection unit; 400, support mechanism; 410, base; 450, detection device; 420, first roller bracket; 421, circular arc groove; 430, second roller bracket; 440, first drive unit; 500, drive mechanism; 510, moving unit; 520, fifth drive unit; 530, synchronous belt drive device. DETAILED DESCRIPTION

[0021] The following describes the implementation of the present invention through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0022] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for understanding and reading by those familiar with this technology, and are not used to limit the conditions for implementation of the present invention. Therefore, they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose of the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", etc. quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments in their relative relationships should also be considered as the scope of implementation of the present invention without substantially changing the technical content.

[0023] like Figure 1-Figure 2As shown, the present invention provides a differential lock assembly runout detection device, comprising a frame 100 slidably mounted on a workbench, a first detection mechanism 200 for detecting axial runout of the differential lock assembly, a second detection mechanism 30 for detecting radial runout of the differential lock assembly, a support mechanism 400 for supporting differential lock assemblies of different models, and a drive mechanism 500 for driving the differential lock assembly to move. A space is provided in the middle of the frame 100 to accommodate the support mechanism 400. The first detection mechanism 200 and the second detection mechanism 300 are mounted on the frame, and the first detection mechanism 200 and the second detection mechanism 300 are arranged opposite each other. The support mechanism 400 is accommodated in the middle of the frame 100. The support mechanism 400 is fixed to the workbench and is located between the first detection mechanism 200 and the second detection mechanism 300. The drive mechanism 500 slides along the Z-axis on the frame 100 and is located above the support structure 400. When the drive mechanism 500 moves downward until it engages with the housing of the differential lock assembly, it drives the differential lock assembly to rotate. The frame 100 is fixed to the slide rails of the workbench and is driven back and forth along the rails by a drive device on the workbench. The frame 100 is arranged in a gantry-style configuration to prevent interference between the frame 100 and the support structure 400 during movement.

[0024] During use, the differential lock assembly to be tested is placed on the support mechanism 400. The driving device drives the frame 100 to move along the Y-axis direction toward the differential lock assembly to be tested until the driving mechanism 500 on the frame 100 is directly above the differential lock assembly to be tested. The driving mechanism 500 is then moved downward until it contacts and engages with the maximum outer diameter of the differential lock assembly housing to be tested. The first detection mechanism 200 and the second detection mechanism 300 are driven to move the first detection mechanism 200 and the second detection mechanism 300 toward the differential lock assembly to be tested until the probe of the first detection mechanism 200 contacts a predetermined position on the differential lock to be tested along the X-axis direction (i.e., the radial direction of the differential lock housing to be tested). The probe of the second detection mechanism 300 can move back and forth along the Y-axis until it contacts the end face to be tested of the differential lock housing to be tested. The driving mechanism 500 drives the differential lock to be tested to rotate uniformly for a predetermined number of revolutions and angles, and then the radial runout of the differential lock assembly is obtained by the first detection mechanism 200, and the axial runout of the differential lock assembly is obtained by the second detection mechanism 300.

[0025] In one embodiment, if Figure 2As shown, the support mechanism 400 includes a base 410, a first drive unit 440, a first roller bracket 420 and a second roller bracket 430 for placing the differential lock assembly. When the differential lock assembly is placed on the first and second roller brackets 420, it can rotate about the axis of the differential lock assembly. The first roller bracket 420 is fixed to one end of the base 410, and the second roller bracket 430 is slidably mounted on the base 410 and arranged opposite to the first roller bracket 420, with the axis of the first and second roller brackets 420 coinciding. The first drive unit 440 is fixed to the base 410 and is located at the end away from the first roller bracket 420. The first drive unit 440 drives the differential lock assembly to move the second roller bracket 430 axially to a predetermined position. The first driving part 440 includes but is not limited to an electric cylinder, and may also be a pneumatic cylinder. The push rod or piston rod of the first driving part 440 abuts against the rear end face of the differential lock assembly housing to be tested.

[0026] During use, the front end of the differential lock assembly to be tested is placed on the first roller bracket 420, and its rear end is placed on the second roller bracket 421. The first drive unit 440 pushes the rear end surface of the differential lock to be tested, causing the second roller bracket 421 to drive the differential lock assembly to move axially toward the first roller bracket 420 until the front end of the differential lock assembly housing moves to a predetermined position. The first drive unit 440 then stops operating to ensure the axial positioning of the differential lock assembly housing. It should be noted that when testing different models of differential lock assembly housings, only the differential lock assemblies on the first roller bracket 420 and the second roller bracket 430 need to be replaced, without replacing the first roller bracket 420 and the second roller bracket 430.

[0027] Furthermore, a locking member 431 is provided on the second roller bracket 430. When the second roller bracket 430 drives the differential lock assembly to move to a predetermined position, the second roller bracket 430 is fixed by the locking member 431 to prevent the second roller bracket 430 from driving the locking member 431 to move during the detection process.

[0028] Furthermore, arc grooves 421 are provided on the first roller bracket 420 and the second roller bracket 430 to prevent the differential lock assembly from falling due to unexpected circumstances.

[0029] Furthermore, a detection device 450 for detecting the angular position of the differential lock assembly is provided on the base 410 and is disposed between the first roller bracket 420 and the second roller bracket 430. This detection device 450 includes, but is not limited to, an angular displacement sensor, and may also be an angle sensor. Using the hole in the outer wall of the differential lock assembly housing as a reference, this detection device 450 detects the number of rotations and angles of the differential lock assembly, ensuring that the drive mechanism 500 can return to its initial position in the event of an unexpected situation.

[0030] In one embodiment, if Figure 1 As shown, the first detection mechanism 200 includes a second drive unit 210 and a first detection unit 220. The second drive unit 210 is disposed on the frame 100 along the X-axis direction, and the first detection unit 220 is disposed on the second drive unit 210. The second drive unit 210 drives the first detection unit 220 to perform telescopic movement along the X-axis direction. The first detection unit 220 abuts the differential lock assembly housing along the radial direction of the differential lock housing to detect radial runout of the differential lock assembly. The first detection unit 220 is preferably a displacement sensor, and the second drive unit 210 includes, but is not limited to, a cylinder.

[0031] During use, the second driving part 210 drives the first detecting part 220 to move along the X-axis direction until the probe of the first detecting part 220 abuts against the outer side wall to be detected of the differential lock assembly housing, and the driving mechanism 500 drives the differential assembly to rotate, thereby measuring the radial runout of the differential.

[0032] In one embodiment, if Figure 1 As shown, the second detection mechanism 300 includes a third drive unit 310, a fourth drive unit 320, and a second detection unit 330. The third drive unit 310 is mounted on the frame 100 along the X-axis, and the fourth drive unit 320 is slidably mounted on the third drive unit 310 along the Y-axis. The third drive unit 310 drives the fourth drive unit 320 to move along the X-axis. The second detection unit 330 is mounted on the fourth drive unit 320, and the fourth drive unit 320 drives the second detection unit 330 to move along the Y-axis until the second detection unit 330 abuts against the end surface of the differential lock assembly housing to detect axial runout of the differential lock assembly. The third drive unit 310 and the fourth drive unit include, but are not limited to, cylinders, and the second detection unit 330 is preferably a displacement sensor.

[0033] During operation, the fourth drive unit 320 drives the second detection unit 330 to move in the reverse direction along the Y-axis until the probe of the second detection unit 330 passes the rear end of the differential lock assembly housing to be tested. The third drive unit 310 then drives the fourth drive unit 320 and the second detection unit 330 to move closer to the differential lock assembly along the X-axis. Finally, the fourth drive unit 320 drives the second detection unit 330 to move in the forward direction along the Y-axis until the probe of the second detection unit 330 contacts the rear end of the differential lock assembly housing to be tested. The drive mechanism 500 then drives the differential lock to rotate, thereby measuring the axial runout of the differential lock assembly.

[0034] In one embodiment, if Figure 1As shown, the drive mechanism 500 includes a moving portion 510, a fifth drive portion 520, and a synchronous belt drive device 530. The fifth drive portion 520 is fixed to the frame 100, and the moving portion 510 is slidably mounted on the frame 100 along the Z-axis. The moving portion 510 is connected to the fifth drive portion 520, and the synchronous belt drive device 530 is mounted on the moving portion 510. The fifth drive portion 520 drives the moving portion 510 downward, driving the synchronous belt drive device 530 to engage with the housing of the differential lock assembly, thereby driving the differential lock assembly to rotate. The fifth drive portion 520 includes, but is not limited to, a cylinder.

[0035] During use, the frame 100 drives the driving mechanism 500 to move to the top of the maximum outer circle of the differential lock assembly housing to be tested, and the fifth driving part 520 drives the moving part 510 to drive the synchronous belt driving device 530 to move downward until the synchronous belt on the synchronous belt driving device 530 is pressed down to the maximum outer circle of the differential lock assembly housing to be tested. At this time, the covering angle of the synchronous belt needs to be greater than the deweighting angle of the dynamic balance to ensure that the differential lock assembly is driven to rotate by the synchronous belt driving device 530.

[0036] In summary, the present invention is applicable to the detection of axial runout and radial runout of different models of differential locks, effectively improving the efficiency and accuracy of differential lock assembly runout measurement and reducing the risk of unqualified products flowing out.

[0037] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. A differential lock assembly vibration detection device, characterized in that: The invention comprises a frame (100) slidably arranged on a workbench, a first detection mechanism (200) for detecting radial runout of a differential lock assembly, a second detection mechanism (300) for detecting axial runout of the differential lock assembly, a support mechanism (400) for supporting differential lock assemblies of different models, and a drive mechanism (500) for driving the differential lock assembly to move, wherein the first detection mechanism (200) and the second detection mechanism (300) are both arranged on the frame, and the first detection mechanism (200) and the second detection mechanism (300) are arranged relative to each other; the frame (10 0) is provided with a space in the middle thereof for accommodating the support mechanism (400), the support mechanism (400) is fixed on the workbench, and the support mechanism (400) is located between the first detection mechanism (200) and the second detection mechanism (300); the drive mechanism (500) is slidably arranged on the frame (100) along the Z-axis direction, and the drive mechanism (500) is located above the support mechanism (400), and when the drive mechanism (500) moves downward until it is engaged with the housing of the differential lock assembly, the drive mechanism (500) drives the differential lock assembly to rotate.

2. The differential lock assembly vibration detection device according to claim 1, characterized in that: The support mechanism (400) comprises a base (410), a first roller bracket (420) for placing a differential lock assembly, and a second roller bracket (430), wherein the first roller bracket (420) is fixed to one end of the base (410), and the second roller bracket (430) is slidably arranged on the base (410) and is arranged opposite to the first roller bracket (420), and the axis center lines of the first roller bracket (420) and the second roller bracket (430) coincide with each other.

3. The differential lock assembly vibration detection device according to claim 2, characterized in that: The support mechanism (400) further comprises a first driving portion (440), the first driving portion (440) being fixedly mounted on the base (410) and located at an end away from the first roller bracket (420), and the first driving portion (440) driving the second roller bracket (430) to move axially to a predetermined position by pushing the differential lock assembly.

4. The differential lock assembly vibration detection device according to claim 2, characterized in that: A detection device (450) for detecting the angular position of the differential lock assembly is provided on the base (410), and the detection device (450) is arranged between the first roller bracket (420) and the second roller bracket (430).

5. The differential lock assembly vibration detection device according to claim 1, characterized in that: The first detection mechanism (200) comprises a second driving part (210) and a first detection part (220), wherein the second driving part (210) is arranged on the frame (100) along the X-axis direction, and the first detection part (220) is arranged on the second driving part (210), and the second driving part (210) drives the first detection part (220) to perform telescopic movement along the X-axis direction; and the first detection part (220) abuts against the housing of the differential lock assembly along the X-axis direction to detect radial runout of the differential lock assembly.

6. The differential lock assembly vibration detection device according to claim 1, characterized in that: The second detection mechanism (300) comprises a third driving part (310), a fourth driving part (320) and a second detection part (330), wherein the third driving part (310) is arranged on the frame (100) along the X-axis direction, the fourth driving part (320) is slidably arranged on the third driving part (310) along the Y-axis direction, and the third driving part (310) drives the fourth driving part (320) to move along the X-axis direction; the second detection part (330) is arranged on the fourth driving part (320), and the fourth driving part (320) drives the second detection part (330) to move along the Y-axis direction until the second detection part (330) abuts against the end face of the housing of the differential lock assembly, so as to detect the axial runout of the differential lock assembly.

7. The differential lock assembly vibration detection device according to claim 1, characterized in that: The driving mechanism (500) comprises a moving part (510), a fifth driving part (520) and a synchronous belt driving device (530), wherein the fifth driving part (520) is fixed on the frame (100), the moving part (510) is slidably arranged on the frame (100) along the Z-axis direction, and the moving part (510) is connected to the fifth driving part (520), and the synchronous belt driving device (530) is arranged on the moving part (510); the fifth driving part (520) drives the moving part (510) to move downward, thereby driving the synchronous belt driving device (530) to cooperate with the housing of the differential lock assembly, and the synchronous belt driving device drives the differential lock assembly to rotate.

8. The differential lock assembly vibration detection device according to claim 2, characterized in that: The second roller bracket (430) is provided with a locking member (431) for fixing the second roller bracket (430) at a predetermined position.

9. The differential lock assembly vibration detection device according to claim 2, characterized in that: The first roller bracket (420) and the second roller bracket (430) are both provided with arc grooves (421) for preventing the differential lock assembly from falling.

10. The differential lock assembly vibration detection device according to claim 1, characterized in that: The frame (100) is arranged in a gantry style.

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