Device for detecting installation distance of spiral bevel pinion

Abstract

A spiral bevel pinion installation distance detection device comprises a base capable of moving along the X axis, the base is provided with a guide part used for being inserted into a bearing hole of a spiral bevel bull gear, and the guide part is provided with a first detection part used for detecting the circle center of the bearing hole of a spiral bevel bull gear installation seat; the second detection part is used for detecting the height from a circle center connecting line of the end part of a spiral bevel bull gear mounting seat and a bearing hole to the end part of a spiral bevel pinion, the third detection part is used for detecting the circle center of the end part of the spiral bevel bull gear mounting seat, the second detection part is arranged on the base along the Z axis, and the second detection part is perpendicular to the axis of the guide part; the third detection part is arranged on the base and is close to the inner side of the guide part, the distance between the third detection part and the guide part corresponds to the distance between the end part of the spiral bevel gear wheel mounting seat and the spiral bevel gear wheel bearing hole, and the axis of the third detection part coincides with the axis of the guide part. The device is simple and compact in structure, effectively improves the detection of the installation distance of the spiral bevel pinion, and avoids the complete opening of a gear box for detection.

Description

Technical Field

[0001] The utility model relates to the technical field of gear detection, in particular to a spiral bevel pinion installation distance detection device. Background Art

[0002] Spiral bevel gears, also known as spiral bevel gears, are gears used to transmit cross-axis power. Their gear teeth are in a spiral shape and arranged along a conical surface. They can effectively transmit torque and rotational motion between two axes whose axes intersect. The meshing of spiral bevel gears is usually one large and one small, that is, the gears of the driving gear and the driven gear are different, which helps to achieve the required transmission ratio. For example, in the automotive drive axle, the main reducer gear pair is usually arranged vertically at a 90° angle. Due to the overlap of the end faces of the gear teeth, at least two pairs of gear teeth are meshed at the same time. Therefore, the spiral bevel gear can withstand a large load. In addition, its gear teeth are not meshed at the same time over the entire tooth length, but gradually turn from one end of the tooth to the other end, making it work smoothly, and even at high speeds, the noise and vibration are very small. However, in the field of four-wheel drive assembly manufacturing such as automotive transfer cases and main reducers, whether the installation distance of the spiral pinion is qualified can directly affect the product's NVH (noise, vibration, and harshness) performance and the life of the gear.

[0003] In the prior art, the Chinese utility model with the authorization announcement number "CN210464923U" and the name "Spiral Bevel Gear Installation Distance Detection Device" specifically discloses "a frame, and also includes a first gear shaft and a second gear shaft, the first gear shaft and the second gear shaft are both arranged on the frame, the central axis of the first gear shaft and the central axis of the second gear shaft are arranged to cross each other, and the frame is provided with a displacement mechanism that drives the second gear shaft to approach or move away from the first gear shaft". The technical solution disclosed by the utility model is that by installing two mutually matching spiral bevel gears on the first gear shaft and the second gear shaft respectively, the spiral bevel gear on the first gear shaft cannot be displaced on the frame, and through the rough adjustment of the third displacement mechanism and the second displacement mechanism, and finally through the manual adjustment of the first displacement mechanism, the distance between the second gear shaft and the first gear shaft can be fine-tuned, which is convenient for the staff to operate. The structure of the utility model is relatively complex, and it does not consider the installation distance detection of the spiral bevel pinion after installation. Utility Model Content

[0004] In view of the shortcomings of the prior art mentioned above, the technical problem to be solved by the utility model is to provide a spiral bevel pinion installation distance detection device to improve the measurement efficiency and accuracy of the spiral bevel pinion installation distance and avoid completely opening the gear box to check the gear contact condition.

[0005] The utility model provides a detecting device for the mounting distance of a spiral bevel pinion, which comprises a base capable of moving along the X-axis. A guiding part for inserting into the bearing hole of the spiral bevel gear is arranged on the base, and a first detecting part for detecting the center of the bearing hole of the mounting seat of the spiral bevel gear is arranged on the guiding part. A second detecting part for detecting the height between the connecting line of the end of the mounting seat of the spiral bevel gear and the center of the bearing hole and the end of the spiral bevel pinion, and a third detecting part for detecting the center of the end of the mounting seat of the spiral bevel gear are arranged on the base. The second detecting part is arranged on the base along the Z-axis and is perpendicular to the axis line of the guiding part. The third detecting part is arranged on the base and close to the inner side of the guiding part, and the distance between the third detecting part and the guiding part corresponds to the distance between the end of the mounting seat of the spiral bevel gear and the bearing hole of the spiral bevel gear, and the axis lines of the third detecting part and the guiding part coincide.

[0006] Preferably, the first detecting part comprises a first driving device and three retractable first probes. The first driving device is arranged circumferentially along the guiding part, the first probes are arranged radially along the guiding part on the first driving device, and the first driving device drives the first probes to do telescopic movement radially along the guiding part.

[0007] Preferably, the guiding part comprises a first mounting seat which is matched with the bearing hole of the spiral bevel gear. The first mounting seat is fixed on the base along the X-axis direction through a fixing column, and an installation groove for accommodating the first driving device is radially formed in the first mounting seat.

[0008] Preferably, a guiding cover is arranged at one end of the first mounting seat far away from the fixing column to prevent the first detecting part from interfering with the mounting seat of the spiral bevel gear when an overtravel occurs.

[0009] Preferably, the guiding cover is made of soft rubber or plastic.

[0010] Preferably, the second detecting part comprises at least one retractable second probe, a second driving device and a second mounting seat. The second mounting seat is fixed on the base, the second driving device is arranged on the second mounting seat, the second probe is arranged on the second driving device along the Z-axis direction and is perpendicular to the axis line of the guiding part, so that the second driving device drives the second probe to do telescopic movement along the Z-axis.

[0011] Preferably, the third detection part includes three telescopic third probes, a third driving device and a third mounting seat. The third mounting seat matches with the end of the spiral bevel gear large gear mounting seat and is fixed on the base. The third mounting seat coincides with the axis line of the guiding part. The third driving device is circumferentially arranged on the side wall of the third mounting seat. The third probes are arranged radially along the third mounting seat on the third driving device. The third driving device drives the third probes to perform telescopic movement along the radial direction of the third mounting seat.

[0012] Preferably, the second detection part is arranged on one side of the guiding part and is eccentric in position to ensure that the second detection part can contact with the end of the spiral bevel gear pinion when detecting.

[0013] As described above, a spiral bevel gear pinion mounting distance detection device involved in the present invention has the following beneficial effects:

[0014] In the present invention, a driving device drives the base to move along the X-axis direction. The base drives the guiding part, the first detection part, the second detection part and the third detection part to move towards the axis line of the bearing hole of the spiral bevel gear large gear mounting seat. The guiding part is inserted into the bearing hole. The third detection part abuts against the end of the spiral bevel gear large gear mounting seat. At this time, the second detection part moves below the spiral bevel gear pinion. The center of the bearing hole and the end of the mounting seat of the spiral bevel gear large gear mounting seat are determined by the first detection part and the third detection part, and then the center of the end of the spiral bevel gear large gear mounting seat is determined. The height from the center of the end of the spiral bevel gear large gear mounting seat to the end of the spiral bevel gear pinion is detected by the second detection part, and then the mounting distance of the spiral bevel gear pinion is determined. The structure of the present invention is simple and compact, which can effectively improve the detection efficiency and accuracy of the mounting distance of the spiral bevel gear pinion, and avoid completely opening the gearbox to check the gear contact situation. Description of the Drawings

[0015] Figure 1 Schematic diagram of the spiral bevel gear pinion meshing with the spiral bevel gear large gear.

[0016] Figure 2 3D schematic diagram of the spiral bevel gear pinion mounting distance detection device provided by an embodiment of the present invention.

[0017] Figure 3 Front view of the spiral bevel gear pinion mounting distance detection device provided by an embodiment of the present invention.

[0018] Figure 4 Side view of the spiral bevel gear pinion mounting distance detection device provided by an embodiment of the present invention.

[0019] Figure 5 Top view of the spiral bevel gear pinion mounting distance detection device provided by an embodiment of the present invention.

[0020] Figure 6 Cross-sectional view taken along line 4.

[0021] Description of reference numerals:

[0022] 100, base; 110, spiral bevel pinion; 120, spiral bevel gear; 200, guiding portion; 210, first mounting seat; 211, mounting groove; 212, guiding block; 213, abutting portion; 220, fixing column; 230, guiding cover; 300, first detecting portion; 310, first driving device; 320, first probe; 400, second detecting portion; 410, second probe; 420, second driving device; 430, second mounting seat; 500, third detecting portion; 510, third probe; 520, third driving device; 530, third mounting seat. Detailed implementation manners

[0023] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.

[0024] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the limiting conditions for the implementation of the present utility model. Therefore, they do not have any technical essence. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and the like cited in this specification are only for the convenience of clear narration, and are not used to limit the scope for the implementation of the present utility model. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope in which the present utility model can be implemented.

[0025] It should be noted that as Figure 1 shown, a spiral bevel pinion 110 and a spiral bevel gear 120 are installed in the gearbox housing, and the spiral bevel pinion 110 and the spiral bevel gear 120 are meshed at 90°. The gearbox includes a spiral bevel gear mounting seat and a spiral bevel pinion mounting seat, and the axis lines of the spiral bevel gear mounting seat and the spiral bevel pinion mounting seat are perpendicular to each other. The spiral bevel gear mounting seat is provided with a bearing hole for mounting the spiral bevel gear, and the axis line of this bearing hole coincides with the axis line of the spiral bevel gear mounting seat. When detecting the mounting distance of the spiral bevel pinion 110, it is not necessary to install the spiral bevel gear 120, and the mounting distance of the spiral bevel pinion 110 after being mounted on the spiral bevel pinion mounting seat is detected.

[0026] As Figures 2 - 6As shown in the figure, a detecting device for the mounting distance of a spiral bevel pinion provided by the utility model includes a base 100, which is connected to a driving device and slidably arranged on a guide rail. The driving device is preferably a cylinder, and the guide rail is arranged along the X-axis, so that the driving device can drive the base 100 to move along the guide rail closer to or away from the spiral bevel pinion. A guiding part 200 for inserting into the bearing hole of the spiral bevel gear is arranged on the base 100, and a first detecting part 300 for detecting the center of the bearing hole of the spiral bevel gear is arranged on the guiding part 200. A second detecting part 400 for detecting the height between the connecting line of the end of the mounting seat of the spiral bevel gear and the center of the bearing hole to the end of the spiral bevel pinion, and a third detecting part 500 for detecting the center of the end of the mounting seat of the spiral bevel gear are arranged on the base 100. The second detecting part 400 is arranged on the base 100 along the Z-axis, the second detecting part 400 is perpendicular to the axis line of the guiding part 200, the second detecting part 400 is arranged on one side of the guiding part 200 and is eccentric in position, so as to ensure that the second detecting part 400 can contact the end of the spiral bevel pinion during detection. The third detecting part 500 is arranged on the base 100 and close to the inner side of the guiding part 200. The distance between the third detecting part 500 and the guiding part 200 corresponds to the distance from the end of the mounting seat of the spiral bevel gear to the bearing hole, and the axis lines of the third detecting part 500 and the guiding part 200 coincide.

[0027] During use, the gearbox housing with the spiral bevel pinion 110 whose mounting distance is to be measured after installation is fixed on a fixture, and the axis direction of the spiral bevel pinion 110 is perpendicular to the X-axis direction. The axis directions of the end of the mounting seat of the spiral bevel gear and the bearing hole in the gearbox housing are consistent with the X-axis direction. During detection, the driving device drives the base 100 to move along the X-axis direction, and then drives the guiding part 200, the first detecting part 300, the second detecting part 400 and the third detecting part 500 to approach the gearbox housing until the guiding part 200 completely enters the bearing hole of the spiral bevel gear and the third detecting part 500 fits with the end of the mounting seat of the spiral bevel gear. At this time, the second detecting part 400 is located below the end of the spiral bevel pinion. The center of the bearing hole of the spiral bevel gear is determined by the first detecting part 300, and the center of the end of the mounting seat of the spiral bevel gear is determined by the third detecting part 500. Since the first detecting part 300 and the third detecting part 500 are in a coaxial state, the connecting line between the center of the bearing hole of the spiral bevel gear and the center of the end of the mounting seat of the spiral bevel gear can be determined. Finally, the distance from the connecting line of the centers to the end of the spiral bevel pinion is measured by the second detecting part 400, which is the mounting distance of the spiral bevel pinion. If the error between the obtained mounting distance and the standard mounting distance meets the predetermined standard, the installation of the spiral bevel pinion meets the requirements; otherwise, the installation position of the spiral bevel pinion needs to be finely adjusted or reinstalled.

[0028] In one embodiment, as Figure 3 and Figure 4As shown in the figure, the first detection unit 300 includes a first driving device 310 and three retractable first probes 320. The first driving device 310 is arranged circumferentially along the guiding part 200. The first probes 320 are arranged radially along the guiding part 200 on the first driving device 310. The three probes 320 are in the same plane and non-collinear.

[0029] During use, the base 100 drives the guiding part 200 to be integrally inserted into the bearing hole of the spiral bevel gear. The first driving device 310 drives the first probes 320 to extend radially until they abut against the side wall of the bearing hole of the spiral bevel gear, thereby determining the center of the bearing hole. After the detection is completed, the first driving device 310 drives the first probes 320 to contract radially along the guiding part 200 to avoid interference when the first probes 320 are moved out along the X-axis direction with the guiding part 200. Among them, the first driving device 310 is preferably a cylinder, and the first probe 320 is preferably an eddy current displacement sensor.

[0030] Furthermore, as Figures 2 - 4 shown in the figure, the guiding part 200 includes a first mounting seat 210. The first mounting seat 210 is matched with the bearing hole of the spiral bevel gear. The first mounting seat 210 is fixed to the base 100 along the X-axis direction through fixing columns 220. The first mounting seat 210 is provided with mounting grooves 211 for accommodating the first driving device 310 along the radial direction to ensure that the first probes 320 on the three first driving devices 310 are non-collinear. The first mounting seat 210 is provided with a plurality of guiding blocks 212 along the circumferential direction of the side wall. The guiding blocks 212 are arranged at intervals with the mounting grooves 211. The outer shape of the guiding blocks 212 is matched with the bearing hole of the spiral bevel gear.

[0031] During use, it can ensure that the first mounting seat 210 smoothly enters the bearing hole of the spiral bevel gear. Among them, a butting part 213 is provided on the outer side wall of each guiding block. When the guiding block 212 enters the bearing hole of the spiral bevel gear with the first mounting seat 210 to a predetermined position, the butting part abuts against the end part.

[0032] Furthermore, as Figure 4 shown in the figure, a guiding cover 230 is provided at one end of the first mounting seat 210 away from the fixing column 220. It is made of soft rubber or plastic to avoid interference between the first detection unit 300 and the mounting seat of the spiral bevel gear when overtravel occurs.

[0033] In one embodiment, as Figures 4 - 6As shown in the figure, the second detection unit 400 includes at least one telescopic second probe 410, a second driving device 420, and a second mounting base 430. The second mounting base 430 is fixedly arranged on the base 100. One end face of the second mounting base 430 coincides with the axis of the guiding part 200. The second driving device 420 is arranged on the second mounting base 430. The second probe 410 is arranged on the second driving device 420 along the Z-axis direction and is perpendicular to the axis of the guiding part 200, so that the second driving device 420 drives the second probe 410 to perform telescopic movement along the Z-axis. Among them, the second driving device 420 is preferably a cylinder, and the second probe 410 is preferably an eddy current displacement sensor.

[0034] During use, when the base 100 drives the second probe 410 to move directly below the bevel pinion, at this time, the second driving device 420 drives the second probe 410 to extend until it abuts against the end face of the bevel pinion, so as to measure the distance from the center line connecting the end of the bevel gear mounting seat and the bearing hole to the end face of the bevel pinion, that is, the mounting distance of the bevel pinion.

[0035] In one embodiment, as Figure 3 shown, the third detection unit 500 includes three telescopic third probes 510, a third driving device 520, and a third mounting base 530. The third mounting base 530 matches the end of the bevel gear mounting seat and is fixedly arranged on the base 100. The third mounting base 530 coincides with the axis of the guiding part 200. The third driving device 520 is circumferentially arranged on the side wall of the third mounting base 530. The third probe 510 is arranged on the third driving device 520 along the radial direction of the third mounting base 530. The third driving device 520 drives the third probe 510 to perform telescopic movement along the radial direction of the third mounting base 530. Among them, the third probe 510 is preferably an eddy current displacement sensor, and the third driving device 520 is preferably a cylinder.

[0036] During use, when the base 100 drives the guiding part 200 to be inserted into the bevel gear bearing hole to a predetermined position as a whole, the end face of the third mounting base 530 fits with the end of the bevel gear mounting seat. The third driving device 520 drives the third probe 510 to extend radially along the third mounting base 530 until the third probe 510 abuts against the inner side wall of the end of the bevel gear mounting seat, so as to obtain the center of the end of the bevel gear mounting seat. After the detection is completed, the third driving device 520 drives the third probe 510 to contract and reset radially along the third mounting base 530 to avoid interference with the bevel gear mounting seat when the base 100 drives the third mounting base 530 to move out.

[0037] In summary, in the present utility model, the driving device drives the base to move along the X axis. The base drives the guiding part, the first detecting part, the second detecting part and the third detecting part to move towards the axis line of the bearing hole of the spiral bevel gear mounting seat. The guiding part is inserted into the bearing hole, and the third detecting part abuts against the end of the spiral bevel gear mounting seat. At this time, the second detecting part moves below the spiral bevel pinion. The center of the bearing hole and the end of the mounting seat of the spiral bevel gear mounting seat are determined by the first detecting part and the third detecting part, and then the center of the end of the spiral bevel gear mounting seat is determined. The height from the center line connecting the center of the end of the spiral bevel gear mounting seat to the center of the bearing hole to the end of the spiral bevel pinion is detected by the second detecting part, and then the mounting distance of the spiral bevel pinion is determined. The structure of the present utility model is simple and compact, which can effectively improve the detection efficiency and accuracy of the mounting distance of the spiral bevel pinion, and avoid completely opening the gearbox to check the gear contact situation.

[0038] The above embodiments are only illustrative of the principles and effects of the present utility model, and are not intended to limit the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present utility model should still be covered by the claims of the present utility model.

Claims

1. A spiral bevel pinion mounting distance detection device, characterized in that, It includes a base (100) capable of moving along the X-axis. A guiding portion (200) for inserting into the bearing hole of the spiral bevel gear is provided on the base (100), and a first detecting portion (300) for detecting the center of the bearing hole of the spiral bevel gear is provided on the guiding portion (200); a second detecting portion (400) for detecting the height between the center line connecting the end of the spiral bevel gear mounting seat and the bearing hole and the end of the spiral bevel pinion, and a third detecting portion (500) for detecting the center of the end of the spiral bevel gear mounting seat are provided on the base (100). The second detecting portion (400) is arranged on the base (100) along the Z-axis, and the second detecting portion (400) is perpendicular to the axis line of the guiding portion (200); the third detecting portion (500) is arranged on the base (100) and close to the inner side of the guiding portion (200), and the distance between the third detecting portion (500) and the guiding portion (200) corresponds to the distance from the end of the spiral bevel gear mounting seat to the bearing hole of the spiral bevel gear, and the axis lines of the third detecting portion (500) and the guiding portion (200) coincide.

2. The spiral bevel pinion mounting distance detection device according to claim 1, wherein The first detecting portion (300) includes a first driving device (310) and three retractable first probe heads (320). The first driving device (310) is arranged circumferentially along the guiding portion (200), the first probe heads (320) are arranged radially along the guiding portion (200) on the first driving device (310), and the first driving device (310) drives the first probe heads (320) to perform telescopic movement radially along the guiding portion (200).

3. The spiral bevel pinion mounting distance detection device according to claim 2, characterized in that, The guiding portion (200) includes a first mounting seat (210). The first mounting seat (210) is matched with the bearing hole of the spiral bevel gear. The first mounting seat (210) is fixed to the base (100) along the X-axis direction through a fixing column (220), and an installation groove (211) for accommodating the first driving device (310) is radially formed in the first mounting seat (210).

4. The spiral bevel pinion mounting distance detection device according to claim 3, characterized in that, A guiding cover (230) is provided at one end of the first mounting seat (210) away from the fixing column (220) to prevent the first detecting portion (300) from interfering with the spiral bevel gear mounting seat during over-travel.

5. The spiral bevel pinion mounting distance detection device according to claim 4, characterized in that, The guiding cover (230) is made of soft rubber or plastic.

6. The spiral bevel pinion mounting distance detection device according to claim 1, characterized in that The second detecting portion (400) includes at least one retractable second probe head (410), a second driving device (420) and a second mounting seat (430). The second mounting seat (430) is fixedly arranged on the base (100), the second driving device (420) is arranged on the second mounting seat (430), and the second probe head (410) is arranged on the second driving device (420) along the Z-axis direction and is perpendicular to the axis line of the guiding portion (200), so that the second driving device (420) drives the second probe head (410) to perform telescopic movement along the Z-axis.

7. The spiral bevel pinion mounting distance detection device according to claim 1, characterized in that, The third detection unit (500) includes three retractable third probes (510), a third driving device (520) and a third mounting base (530). The third mounting base (530) is matched with the end of the spiral bevel gear mounting base and is fixed on the base (100). The third mounting base (530) coincides with the axis line of the guiding part (200). The third driving device (520) is circumferentially arranged on the side wall of the third mounting base (530). The third probe (510) is radially arranged on the third mounting base (530) on the third driving device (520). The third driving device (520) drives the third probe (510) to perform a telescopic movement radially along the third mounting base (530).

8. The spiral bevel pinion mounting distance detection device according to any one of claims 1-7, characterized in that The second detection unit (400) is arranged on one side of the guiding part (200) and is eccentric in position to ensure that the second detection unit (400) can contact the end of the spiral bevel pinion during detection.

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