An apparatus for detecting a gear meshing clearance of an arc tooth bevel gear and a method for detecting the gear meshing clearance

Abstract

The application discloses a kind of spiral bevel gear intermeshing clearance detection device and its detection method, belongs to gear detection equipment field.It includes base, shell and activity device;The base includes bottom plate, strut, motor, rotating plate, multiple clamping blocks, multiple springs I and stand;The top of the bottom plate is fixedly connected with motor and strut;The output shaft of the motor is fixedly connected with rotating plate;The upper end of the rotating plate is fixedly connected with stand;The side of the stand is equipped with multiple grooves, clamping block and corresponding groove sliding fit;One end of the spring I is fixedly connected in clamping block, and the other end of the spring I is fixedly connected in groove;The application can not only quickly switch the number of drawing device simply and conveniently through activity device, to adapt to the number of teeth of different gears, and the application can also draw on corresponding gap inner wall and paper, to facilitate subsequent repair.

Description

Technical Field

[0001] This invention relates to a device and method for detecting the clearance between spiral bevel gears, belonging to the field of gear testing equipment. Background Technology

[0002] To ensure that the gear clearance is within the normal range during operation, the inner wall of the gear tooth clearance must be smooth and flat after machining. The gear clearance value can be indirectly obtained by measuring the tooth clearance and its flatness. However, the currently used spiral bevel gear testing devices require different testing equipment due to the different number of teeth on different gears, which wastes resources. Furthermore, the commonly used testing equipment cannot mark the uneven positions on the inner wall, making it difficult to determine the location for subsequent repairs. Summary of the Invention

[0003] The purpose of this invention is to solve the above-mentioned problems existing in the background art by providing a device and method for detecting the clearance between spiral bevel gears.

[0004] The present invention achieves the above objectives by adopting the following technical solution:

[0005] A device for detecting the clearance between spiral bevel gears includes a base, a housing, and a movable device. The base includes a base plate, a support rod, a motor, a rotating plate, multiple locking blocks, multiple springs I, and a column. The top of the base plate is fixedly connected to the motor and the support rod. The rotating plate is fixedly connected to the output shaft of the motor. The upper end of the rotating plate is fixedly connected to the column. The side of the column is provided with multiple grooves, and the locking blocks slide in the corresponding grooves. One end of each spring I is fixedly connected to a locking block, and the other end of each spring I is fixedly connected to a groove.

[0006] The housing includes a fixed shell and paper. The fixed shell includes a shell body with a conical groove inside. The inner wall of the conical groove has annular grooves I and II of different diameters. The fixed shell is fixedly connected to the upper end of the support rod, and the side of the fixed shell is also provided with a through hole communicating with the conical groove. The paper passes through the through hole and is laid flat on the inner wall of the conical groove.

[0007] The movable device includes a tracing device, an arc-shaped slider I, a connecting rod, a connecting column, and an arc-shaped slide II. The arc-shaped slide II and the arc-shaped slider I are slidably engaged with the annular groove I and the annular groove II, respectively. The connecting rod is fixedly connected to the arc-shaped slide II and the arc-shaped slider I through the connecting column. The connecting rod is provided with a vertical slide rail, and the tracing device is slidably engaged with the slide rail. One end of the tracing device is in contact with the gear to be measured, and the other end of the tracing device is in contact with the paper.

[0008] A detection method for a bevel gear clearance detection device, the detection method comprising the following steps:

[0009] Step 1: Adjust the number of movable devices according to the number of teeth of the spiral bevel gear to be tested;

[0010] Step 2: Drag the paper into the conical groove and lay it flat on the inner wall of the groove;

[0011] Step 3: Place the spiral bevel gear to be tested upside down in the conical groove, with the column passing through the fixing hole in the center of the spiral bevel gear, and ensuring that each drawing device is located within the corresponding tooth gap;

[0012] Step 4: Rotate the screw to fix the arc-shaped slider I through the elastic ring;

[0013] Step 5: Start the motor to drive the spiral bevel gear to rotate, thereby causing the tracing device to trace the image on the paper at the corresponding tooth gaps.

[0014] Step Six: After the drawing device disengages from the gap between the teeth, turn off the motor and observe whether the lines on the paper change linearly. If they change linearly, the inner wall of the gap between the teeth is smooth. If they do not change linearly, observe the brightness of the lines in the gap between the teeth and further repair any rough spots on the inner wall of the gap.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the present invention can not only quickly and easily switch the number of tracing devices through the movable device to adapt to the number of teeth of different gears, but also can trace on the inner wall of the corresponding gap and on the paper, which facilitates subsequent repair. Attached Figure Description

[0016] Figure 1 This is a front view of a bevel gear clearance detection device according to the present invention;

[0017] Figure 2 This is a front view of the base of a bevel gear clearance detection device according to the present invention;

[0018] Figure 3 This is a front view of the housing of a bevel gear clearance detection device according to the present invention;

[0019] Figure 4 This is a front view of the fixed housing of the arc bevel gear clearance detection device of the present invention;

[0020] Figure 5 This is a schematic diagram of the structure of the elastic ring of the arc tooth bevel gear clearance detection device of the present invention;

[0021] Figure 6 This is a top view of the control ring of a bevel gear clearance detection device according to the present invention;

[0022] Figure 7This is a front view of the movable device of the spiral bevel gear clearance detection device of the present invention;

[0023] Figure 8 This is a top view of the movable device of the arc bevel gear clearance detection device of the present invention;

[0024] Figure 9 This is a front view of the drawing device of the spiral bevel gear clearance detection device of the present invention;

[0025] Figure 10 yes Figure 9 A cross-sectional view along the AA direction;

[0026] Figure 11 This is a top view of a bevel gear clearance detection device according to the present invention. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the invention, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0028] Specific implementation method one: as follows Figure 1-11 As shown in the figure, this embodiment describes a device for detecting the clearance between spiral bevel gears, including a base 1, a housing 2, and a movable device 3; the base 1 includes a base plate 11, a support rod 12, a motor 13, a rotating plate 14, multiple locking blocks 15, multiple springs I 16, and a column 17; the top of the base plate 11 is fixedly connected to the motor 13 and the support rod 12; the output shaft of the motor 13 is fixedly connected to the rotating plate 14; the upper end of the rotating plate 14 is fixedly connected to the column 17; the side of the column 17 is provided with multiple grooves 18, and the locking blocks 15 slide in cooperation with the corresponding grooves 18; one end of the spring I 16 is fixedly connected to the locking block 15, and the other end of the spring I 16 is fixedly connected to the groove 18;

[0029] The housing 2 includes a fixed shell 21 and paper 22. The fixed shell 21 includes a shell body 211. The shell body 211 has a conical groove 214 inside. The inner wall of the conical groove 214 has annular grooves I 213 and II 215 of different diameters. The fixed shell 21 is fixedly connected to the upper end of the support rod 12. The side of the fixed shell 21 also has a through hole 2111 communicating with the conical groove 214. The paper 22 passes through the through hole 2111 and is laid flat on the inner wall of the conical groove 214.

[0030] The movable device 3 includes a drawing device 35, an arc-shaped slider I 31, a connecting rod 32, a connecting post 33, and an arc-shaped slide II 36. The arc-shaped slide II 36 and the arc-shaped slider I 31 are slidably engaged with the annular groove I 213 and the annular groove II 215, respectively. The connecting rod 32 is fixedly connected to the arc-shaped slide II 36 and the arc-shaped slider I 31 through the connecting post 33. The connecting rod 32 is provided with a vertical slide rail 34, and the drawing device 35 is slidably engaged with the slide rail 34. One end of the drawing device 35 is in contact with the gear to be tested, and the other end of the drawing device 35 is in contact with the paper 22.

[0031] Specific implementation method two: such as Figure 1-11 As shown, this embodiment is a further explanation of the first specific embodiment. The drawing device 35 includes two line width pen refills 351, a connecting shell 352, and a spring II 354. The connecting shell 352 is slidably engaged with the slide rail 34. The two ends of the connecting shell 352 are symmetrically provided with slots 353. The slots 353 are provided with line width pen refills 351 that are slidably engaged with them. The line width pen refills 351 are U-shaped. The two ends of the line width pen refills 351 and the slots 353 are fixedly connected with spring II 354. The line width pen refills 351 are located on the outside of the connecting rod 32.

[0032] Specific implementation method three: such as Figure 1-11 As shown, this embodiment is a further explanation of specific embodiment one. The fixed shell 21 also includes an elastic ring 217, a connecting ring 218, a screw 219, and a transmission ring 2110; a circular hole 212 is provided at the center of the bottom end of the fixed shell 21, and the rotating plate 14 is disposed in the circular hole 212; the fixed shell 21 is also provided with an annular groove III 216, which is located on the side of an annular groove II 215 and communicates with an annular groove II 215; the inner bottom end of the annular groove III 216 prevents elasticity from entering. The inner diameter of the elastic ring 217 is equal to the inner diameter of the annular groove Ⅲ 216, and the outer side of the upper end face of the elastic ring 217 is provided with a conical surface; the top end of the annular groove Ⅲ 216 is provided with a threaded hole; the screw 219 is threadedly engaged with the threaded hole, and the lower end of the screw 219 is connected to a connecting ring 218 through a bearing. The lower end of the connecting ring 218 is fixedly connected to a transmission ring 2110. Both the connecting ring 218 and the transmission ring 2110 are located inside the annular groove Ⅲ 216; the transmission ring 2110 is located above the conical surface of the elastic ring 217.

[0033] Specific implementation method four: such as Figure 1-11 As shown, this embodiment is a further explanation of the first specific embodiment. When the screw 219 moves downward, it pushes the elastic ring 217 to squeeze the arc-shaped slider I 31 through the transmission ring 2110.

[0034] Specific implementation method five: such as Figure 1-11As shown, this embodiment is a further explanation of the specific embodiment one. The movable device 3 also includes a limiting device 37. The limiting device 37 is composed of multiple interlocking arc-shaped hollow tubes connected together. Two adjacent hollow tubes are interference-fitted, and one end of the arc-shaped hollow tube with the smallest inner diameter is fixedly connected to the side of the arc-shaped slider I 31. The outer surface of the arc-shaped hollow tube with the largest inner diameter is provided with multiple grooves for transmission parallel to the central axis of the conical groove 214.

[0035] Specific implementation method six: such as Figure 1-11 As shown, this embodiment is a further explanation of the first specific embodiment. Among the multiple arc-shaped hollow tubes on the limiting device 37, the length connected to the arc-shaped slider I 31 is the shortest, the arc-shaped hollow tube farthest from the arc-shaped slider I 31 is the longest, and the friction between two adjacent arc-shaped hollow tubes that are farther away from the arc-shaped slider I 31 is smaller.

[0036] Specific implementation method seven: such as Figure 1-11 As shown, this embodiment is a further explanation of the first specific embodiment. The housing 2 also includes a control device 23, which includes a control ring 231. The inner circular surface of the control ring 231 is provided with a plurality of teeth, and the control ring 231 is provided with an arc-shaped groove 232 that slides with the screw 219. The teeth on the control ring 231 slide with the groove on the outer side of the arc-shaped hollow tube with the largest inner diameter.

[0037] Specific implementation method eight: such as Figure 1-11 As shown in the figure, this embodiment describes a detection method for a device for detecting the clearance between spiral bevel gears. The detection method includes the following steps:

[0038] Step 1: Adjust the number of movable devices 3 according to the number of teeth of the spiral bevel gear to be tested;

[0039] Step 2: Drag the paper 22 into the conical groove 214 and lay it flat on the inner wall of the conical groove 214;

[0040] Step 3: Place the spiral bevel gear to be tested upside down in the conical groove 214, with the column 17 passing through the fixing hole in the center of the spiral bevel gear, and ensuring that each drawing device 35 is located in the corresponding tooth gap.

[0041] Step 4: Rotate screw 219 to fix arc-shaped slider I 31 through elastic ring 217;

[0042] Step 5: Start motor 13 to drive the spiral bevel gear to rotate, thereby causing the drawing device 35 to draw on the paper 22 in the corresponding tooth gap;

[0043] Step Six: After the drawing device 35 disengages from the tooth gap, turn off the motor 13 and observe whether the lines on the paper 22 change linearly. If they change linearly, the inner wall of the tooth gap is smooth. If they do not change linearly, observe the brightness of the lines in the tooth gap and further repair any rough spots on the inner wall of the tooth gap.

[0044] Specific implementation method nine: as follows Figure 1-11 As shown, this embodiment is a further explanation of specific embodiment eight. The line-width pen refill 351 on the drawing device 35 is available in multiple colors. The different colors of the line-width pen refill 351 facilitate finding the corresponding grooves on the paper 22 during subsequent repairs, avoiding operational errors.

[0045] The working principle of this invention is as follows: When using this device, the number of movable devices 3 is adjusted according to the number of teeth of the spiral bevel gear to be tested. When adjusting the number of movable devices 3, if more movable devices 3 are added, first rotate the screw 219. The screw 219 moves downward, driving the connecting ring 218 and the transmission ring 2110 to move downward. The transmission ring 2110 pushes the conical surface of the elastic ring 217, causing the elastic ring 217 to clamp towards the center and push the arc-shaped slider I 31 against the inner wall of the annular groove II 215 to prevent the arc-shaped slider I 31 from moving. Then, the control ring 231 is placed at the top and fitted onto the screw 219 through the arc-shaped groove 232. The retaining teeth on the inner side of the control ring 231 are pushed into the groove of the outermost arc-shaped hollow tube. Then, rotate... Control ring 231 is used to move the arc-shaped hollow tube with the largest inner diameter to the adjacent arc-shaped hollow tube via the locking teeth, thereby creating a gap between the two movable devices 3. Then, control ring 231 is removed and screw 219 is rotated in the opposite direction to loosen elastic ring 217. Then, the movable devices 3 in annular groove II 215 are brought together, and the newly added movable device 3 is placed in annular groove II 215 to complete the addition. If a reduction is needed, one movable device 3 is removed, and the remaining movable devices 3 are roughly evenly distributed in annular groove II 215. Then, control ring 231 is rotated in the opposite direction as described above to move the arc-shaped hollow tube in another direction, thereby increasing the length of limiting device 37. Finally, fine adjustments are made.

[0046] The arc-shaped hollow tube furthest from the arc-shaped slider I 31 in the limiting device 37 has the largest length and the corresponding central angle is also the largest. Since the friction between two adjacent arc-shaped hollow tubes farther from the arc-shaped slider I 31 is smaller, when the control ring 231 is pushed, the arc-shaped hollow tube with the relatively larger inner diameter always moves first. Furthermore, since the angle by which the central angle corresponding to the tooth groove decreases by α when the number of teeth increases from a base number n by 1, when the number of teeth increases from a base number n by 1 and then by 1 again, the central angle corresponding to the tooth groove of n+2 teeth is relative to the tooth groove of n+1 teeth. The angle at which the central angle corresponding to the groove decreases is β. Since α > β, the arc-shaped hollow tube farthest from the arc-shaped slider Ⅰ31 has the longest length, and its corresponding central angle is α. The central angle of the arc-shaped hollow tube adjacent to it is β. The central angles of the remaining arc-shaped hollow tubes decrease sequentially and are pre-measured angles. When adjusting the movable device 3, the corresponding number of arc-shaped hollow tubes can be moved and the length can be contracted by directly pushing the number of teeth to be increased as needed. In this way, only the central angle corresponding to the arc-shaped hollow tube needs to be measured once, making the adjustment more convenient (the base number n of the number of teeth is determined by actual needs).

[0047] Drag the paper 22 into the conical groove 214 and lay it flat on the inner wall of the conical groove 214;

[0048] The spiral bevel gear to be tested is inverted in the conical groove 214. The column 17 passes through the fixing hole in the center of the spiral bevel gear, and the spring force of the spring I 16 makes the locking block 15 press against the inner wall of the fixing hole to fix the spiral bevel gear, and makes each line width pen refill 351 press against the inner wall of the tooth groove.

[0049] Then rotate screw 219 to fix arc-shaped slider I 31 through elastic ring 217;

[0050] Start the motor 13, which drives the spiral bevel gear to rotate. Since the gear has curved teeth, it pushes the connecting shell 352 to slide in the slide 34 during rotation. The connecting shell 352 drives the line pen refills 351 on both sides to draw on the corresponding tooth grooves and the paper 22 at the bottom.

[0051] After the drawing device 35 disengages from the tooth gap, the motor 13 is turned off. When the inner wall of the tooth groove is flat, the lines on the paper 22 change linearly. If the inner wall of the tooth groove is not flat, you can observe whether there is a depression on the outer edge of the lines on the paper 22. If there is, it indicates that there is a protrusion on the inner wall of the tooth groove. You can also observe whether there is a color difference on the inner wall of the tooth groove. If there is a color difference, it indicates that there is a depression on the inner wall of the tooth groove. By matching the lines on the paper 22 with the color difference on the inner wall, it is easy to determine the location of the unevenness and facilitate subsequent repair.

[0052] If the inner wall of the tooth groove is flat, the size of the tooth groove on paper 22 can be measured with a ruler, which is convenient for comparison with the measurement results of other gears. If the tooth gap is within the allowable error range, the gap between the two gears is also within the normal value range.

[0053] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0054] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for detecting the clearance between spiral bevel gears, characterized in that: The device includes a base (1), a housing (2), and a movable device (3); the base (1) includes a base plate (11), a support rod (12), a motor (13), a rotating plate (14), multiple locking blocks (15), multiple springs I (16), and a column (17); the top of the base plate (11) is fixedly connected to the motor (13) and the support rod (12); the output shaft of the motor (13) is fixedly connected to the rotating plate (14); the upper end of the rotating plate (14) is fixedly connected to the column (17); the side of the column (17) is provided with multiple grooves (18), and the locking blocks (15) slide in cooperation with the corresponding grooves (18); one end of the spring I (16) is fixedly connected in the locking block (15), and the other end of the spring I (16) is fixedly connected in the groove (18); The housing (2) includes a fixed shell (21) and paper (22). The fixed shell (21) includes a shell body (211). The shell body (211) has a conical groove (214) inside. The inner wall of the conical groove (214) has annular groove I (213) and annular groove II (215) of different diameters. The fixed shell (21) is fixedly connected to the upper end of the support rod (12). The side of the fixed shell (21) also has a through hole (2111) communicating with the conical groove (214). The paper (22) passes through the through hole (2111) and is laid flat on the inner wall of the conical groove (214). The active device (3) includes a drawing device (35), an arc-shaped slider I (31), a connecting rod (32), a connecting column (33), and an arc-shaped slider II (36). The arc-shaped slider II (36) and the arc-shaped slider I (31) are slidably engaged with the annular groove I (213) and the annular groove II (215), respectively. The arc-shaped slider II (36) and the arc-shaped slider I (31) are fixedly connected by the connecting column (33) with the connecting rod (32). The connecting rod (32) is provided with a vertical slide (34). The drawing device (35) is slidably engaged with the slide (34). One end of the drawing device (35) is in contact with the gear to be tested, and the other end of the drawing device (35) is in contact with the paper (22).

2. The device for detecting the clearance between spiral bevel gears according to claim 1, characterized in that: The drawing device (35) includes two line width pen refills (351), a connecting shell (352), and a spring II (354); the connecting shell (352) is slidably engaged with the slide (34), and the two ends of the connecting shell (352) are symmetrically provided with slots (353), and the slots (353) are provided with line width pen refills (351) that are slidably engaged with them; the line width pen refills (351) are U-shaped, and the two ends of the line width pen refills (351) and the slots (353) are fixedly connected with spring II (354), and the line width pen refills (351) are located on the outside of the connecting rod (32).

3. The device for detecting the clearance between spiral bevel gears according to claim 2, characterized in that: The fixed shell (21) also includes an elastic ring (217), a connecting ring (218), a screw (219), and a transmission ring (2110); the fixed shell (21) has a circular hole (212) at the center of its bottom end, and the rotating plate (14) is disposed in the circular hole (212); the fixed shell (21) is also provided with an annular groove III (216), which is located on the side of an annular groove II (215) and is connected to an annular groove II (215); an elastic ring (217) is placed at the bottom of the annular groove III (216), and the elastic ring (217) is located at the bottom of the annular groove III (216). The inner diameter of the elastic ring (217) is equal to the inner diameter of the annular groove III (216), and the outer side of the upper end face of the elastic ring (217) is provided with a conical surface; the top end of the annular groove III (216) is provided with a threaded hole; the screw (219) is threadedly engaged with the threaded hole, and the lower end of the screw (219) is connected to a connecting ring (218) through a bearing, and the lower end of the connecting ring (218) is fixedly connected to a transmission ring (2110). The connecting ring (218) and the transmission ring (2110) are both located in the annular groove III (216); the transmission ring (2110) is located above the conical surface of the elastic ring (217).

4. The device for detecting the clearance between spiral bevel gears according to claim 3, characterized in that: When the screw (219) moves downward, it pushes the elastic ring (217) through the transmission ring (2110) to squeeze the arc-shaped slider I (31).

5. The device for detecting the clearance between spiral bevel gears according to claim 3, characterized in that: The active device (3) also includes a limiting device (37); the limiting device (37) is composed of multiple interlocking arc-shaped hollow tubes connected together, with an interference fit between two adjacent hollow tubes, and one end of the arc-shaped hollow tube with the smallest inner diameter is fixedly connected to the side of the arc-shaped slider I (31), and multiple grooves for transmission are provided on the outer side of the arc-shaped hollow tube with the largest inner diameter, which are parallel to the central axis of the conical groove (214).

6. The device for detecting the clearance between spiral bevel gears according to claim 5, characterized in that: Among the multiple arc-shaped hollow tubes on the limiting device (37), the one connected to the arc-shaped slider I (31) has the shortest length, the one furthest from the arc-shaped slider I (31) has the longest length, and the friction between two adjacent arc-shaped hollow tubes that are farther from the arc-shaped slider I (31) is smaller.

7. The device for detecting the clearance between spiral bevel gears according to claim 6, characterized in that: The housing (2) also includes a control device (23), which includes a control ring (231). The inner circular surface of the control ring (231) is provided with multiple teeth, and the control ring (231) is provided with an arc groove (232) that slides with the screw (219). The teeth on the control ring (231) slide with the groove on the outer side of the arc hollow tube with the largest inner diameter.

8. The detection method of the inter-gear clearance detection device for spiral bevel gears according to claim 7, characterized in that: The detection method includes the following steps: Step 1: Adjust the number of movable devices (3) according to the number of teeth of the spiral bevel gear to be tested; Step 2: Drag the paper (22) into the conical groove (214) and lay it flat on the inner wall of the conical groove (214); Step 3: Place the spiral bevel gear to be tested upside down in the conical groove (214), with the column (17) passing through the fixing hole in the center of the spiral bevel gear, and make each drawing device (35) located in the corresponding tooth groove; Step 4: Rotate the screw (219) to fix the arc-shaped slider I (31) through the elastic ring (217); Step 5: Start the motor (13) to drive the spiral bevel gear to rotate, thereby causing the drawing device (35) to draw on the corresponding tooth groove and paper (22); Step 6: After the drawing device (35) is removed from the interdental groove, turn off the motor (13) and observe whether the lines on the paper (22) change linearly. If they change linearly, the inner wall of the interdental groove is smooth. If they do not change linearly, observe the brightness of the lines in the interdental groove and repair any rough areas on the inner wall of the interdental groove.

9. The detection method of the inter-gear clearance detection device for spiral bevel gears according to claim 8, characterized in that: The line-width pen refills (351) on the tracing device (35) are available in a variety of colors.

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