Cone bearing and gear combination clearance detection device and detection method

Abstract

The invention discloses a cone bearing and gear combination clearance detection device and method, the detection device comprises a rack, an upper sliding table mechanism, a positioning mechanism and a lower detection mechanism, the positioning mechanism is placed on a working platform of the rack, and the upper sliding table mechanism and the lower detection mechanism are respectively located above and below the working platform of the rack. The cone bearing and gear combination is positioned by a positioning mechanism. Axial force is loaded through an upper driving piece and a lower driving piece of the upper sliding table mechanism, a load is automatically applied to the cone bearing and gear combination assembly, the clearance is measured through a displacement sensor of the lower detection mechanism, data are collected, and automatic measurement of the bearing clearance value is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of tapered bearing clearance detection, and particularly relates to a tapered bearing and gear combination clearance detection device and a detection method. Background Art

[0002] When assembling the intermediate and tail reduction gear of a helicopter, it is necessary to measure the clearance of the tapered bearing and gear combination. The traditional clearance detection method is to install the tapered bearing and gear combination of the intermediate and tail reduction gear into the clearance detection tooling for fixation, place the measuring dial indicator at the center position of the shaft, manually press to eliminate the clearance of the upper small-end bearing, adjust the dial indicator to zero, tighten the tooling nut at the lower end of the component manually, tighten it to a certain jacking force according to the process torque, and record the reading of the dial indicator as the measured clearance value. In order to achieve the specified axial clearance, it is necessary to use measuring tools for multiple measurements and adjustments. If a negative clearance is specified, it is also necessary to reduce the thickness of the bearing adjustment pad on the basis of the positive clearance to achieve the negative clearance. The manual clearance measurement method has the following three main disadvantages: 1) During manual measurement, due to differences in the operating habits, strength, and methods of different operators, problems such as the measuring dial indicator not being vertically placed at the center of the shaft and inaccurate readings are likely to occur, and there are certain errors in the measurement results; 2) Since the axial load is applied manually, the axial load is inaccurate; 3) Since it is a manual measurement, the bearing clearance value cannot be read in real time, nor can the maximum and minimum values be read; 4) The degree of automation of the entire clearance adjustment process is low, the production preparation time is long, and the efficiency is low.

[0003] Chinese patent document CN 105223020 B discloses a tapered bearing detection device, which detection mechanism includes: a pressing device for pressing the tapered bearing; a positioning and lifting device for lifting the tapered bearing, the positioning and lifting device having a pre-tightening torque detection device for driving the tapered bearing to be detected to rotate, and the pre-tightening torque detection device having a torque sensor for detecting the pre-tightening torque when the tapered bearing rotates; a displacement detection device for detecting the axial displacement change between the inner ring and the outer ring of the tapered bearing. In the above technical solution, the pressing device is used to provide an axial force to the tapered bearing to be detected, and the displacement detection device is used to detect the axial displacement change between the inner ring and the outer ring of the tapered bearing, and the torque sensor is used to detect the pre-tightening torque when the tapered bearing rotates, so as to accurately detect whether the axial displacement change and the pre-tightening torque value of the tapered bearing meet the set requirements, and improve the dynamic quality detection effect of the tapered bearing. The technical solution of this document only measures the axial displacement change between the inner ring and the outer ring of the tapered bearing under a certain torque, and is used to predict and select the pre-tightening torque of the upper locking nut of the tapered bearing when assembling with the gear, so as to predict and reach the required axial clearance value of the bearing. The clearance value measured by this measurement method is a negative clearance, and the positive clearance cannot be measured. Moreover, this measurement method cannot measure the actual axial clearance in the state of the bevel gear and bearing combination assembly, and is only suitable for the measurement of a single pair of tapered bearings as a single part. Only the clearance value is indirectly ensured through the pre-tightening torque, and it is not applicable to the detection of the actual clearance value in the combined state of the tapered bearing, gear shaft, locking nut and external casing. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a tapered bearing and gear combination clearance detection device and detection method with good measurement accuracy.

[0005] To solve the above technical problem, the present invention adopts the following technical solutions: A clearance detection device for a tapered bearing and gear combination, comprising a frame, an upper sliding table mechanism, a positioning mechanism, and a lower detection mechanism. The positioning mechanism is placed on the working platform of the frame. The upper sliding table mechanism and the lower detection mechanism are respectively located above and below the working platform of the frame. The tapered bearing and gear combination assembly is positioned by the positioning mechanism. The upper sliding table mechanism includes an upper driving member, an upper sliding shaft, an upper rotating member, and an upper fixing frame. The upper fixing frame is connected to the frame. The first output end of the upper driving member is located above the upper sliding shaft and is used to drive the upper sliding shaft to move up and down. The upper sliding shaft is connected to the upper fixing frame through a cylindrical roller bearing. The upper rotating member is connected to the lower end of the upper sliding shaft and is rotatable relative to the upper sliding shaft. The upper rotating member presses on the upper part of the tapered bearing and gear combination assembly. The lower detection mechanism includes a lower driving member, a lifter, a displacement sensor, a lifting frame, a lower mounting member, a lower sliding shaft, and a lower rotating member. The second output end of the lower driving member is used to drive the lifter. The lower rotating member is mounted on the lower mounting member. The upper and lower parts of the lifting frame are respectively connected to the lower sliding shaft and the lifter. The displacement sensor is located inside the lifting frame and is connected to the lower mounting member. The lower rotating member is connected to the upper part of the lower sliding shaft and is rotatable relative to the lower sliding shaft. The lower part of the tapered bearing and gear combination assembly presses on the lower rotating member.

[0006] As a further improvement to the above technical solution: The upper fixing frame includes three horizontally arranged horizontal platforms and vertical support plates located between adjacent horizontal platforms. The upper driving member is connected to the topmost horizontal platform and the first output end of the upper driving member passes through the topmost horizontal platform. The upper and lower parts of the upper sliding shaft are respectively connected to the other two horizontal platforms through bearings.

[0007] The device further includes an upper mounting member. The upper mounting member is connected to the bottom of the upper sliding shaft. The upper rotating member includes an upper rotating sleeve, an upper flange, and an upper tapered sleeve arranged in sequence from top to bottom. The upper rotating sleeve is rotatably connected to the upper mounting member. The upper tapered sleeve presses on the upper part of the tapered bearing and gear combination assembly.

[0008] The upper sliding shaft includes a sliding shaft main body and an axial retaining cover located at the upper part of the sliding shaft main body. The upper mounting member is connected to the lower part of the sliding shaft main body.

[0009] The lower mounting member includes a lower support column, a fixed flat plate, and a lower fixing sleeve. The lower support column and the lower fixing sleeve are respectively installed on the upper and lower sides of the fixed flat plate. The fixed flat plate is provided with a through hole at the inner circle of the lower fixing sleeve. The lower sliding shaft is connected to the lower fixing sleeve through a cylindrical roller bearing. An anti-rotation column for preventing the lifting frame from rotating is provided between the lifting frame and the lower fixing sleeve.

[0010] The lower detection mechanism further includes a sensor mounting bracket, on which the displacement sensor is mounted, and the sensor mounting bracket is connected to the lower part of the lower fixing sleeve.

[0011] The lower rotating part includes a lower cone, a countersunk head cylinder, a lower sleeve, a spring, and a pressing ring. The lower cone is located inside the countersunk head cylinder. The pressing ring is sleeved on the outer circumference of the lower cone and connected to the top of the countersunk head cylinder. The spring is located in the blind hole at the lower part of the lower cone. The countersunk head cylinder is connected to the lower sleeve through a cylindrical roller bearing, and the lower sleeve is connected to the upper part of the lower sliding shaft.

[0012] The lower detection mechanism further includes a coupling, and the lower driving part drives the lifter through the coupling.

[0013] The device further includes an upper tooling mechanism and a lower tooling mechanism. The upper tooling mechanism and the lower tooling mechanism are respectively provided with an upper center point and a lower center point, and the upper center point and the lower center point are respectively installed on the upper rotating part and the lower rotating part.

[0014] A detection method for a combined clearance detection device of a tapered bearing and a gear includes the following steps: S1) Place the combined component of the tapered bearing and the gear in the positioning mechanism for positioning and clamping; S2) The upper sliding table mechanism descends to the in-place position; S3) The upper driving part applies a first preset loading force to eliminate the clearance of the upper tapered bearing; S4) The lower driving part applies a second preset loading force to make the displacement sensor fit the measurement end face and reads the number L1 of the displacement sensor; S5) The lower driving part applies a third preset loading force to make the inner rings of the two tapered bearings and the gear shaft move along the vertical upward axial force together; S6) Reads the number L2 of the displacement sensor; S7) After the measurement is completed, the lower driving part resets, and the upper driving part resets; S8) Rotate the flange by 120°, and repeat the measurement steps S2) to S7); S9) After the measurement is completed, the upper sliding table mechanism resets.

[0015] Compared with the prior art, the advantages of the present invention are as follows: For the combined clearance detection device and detection method of the tapered bearing and the gear of the present invention, axial forces are respectively loaded through the upper driving part and the lower driving part to automatically apply loads to the combined component of the tapered bearing and the gear. The clearance is directly measured by the displacement sensor, and data is collected to realize the automatic measurement of the bearing clearance value. This measurement method has high measurement accuracy (up to 0.002 mm), high repeatability accuracy, and high efficiency. The present invention can measure the clearance of the combined component of the tapered bearing and the gear by applying a certain axial force up and down, and can meet the measurement of the positive axial clearance in the combined state of the tapered bearing, the gear shaft, the locking nut, and the external casing. Brief Description of the Drawings

[0016] Figure 1 is a perspective structural view of the combined clearance detection device for tapered bearings and gears of the present invention.

[0017] Figure 2 is a front view of the combined clearance detection device for tapered bearings and gears of the present invention.

[0018] Figure 3 is a side view of the combined clearance detection device for tapered bearings and gears of the present invention.

[0019] Figure 4 is a sectional view of the combined clearance detection device for tapered bearings and gears of the present invention.

[0020] Figure 5 is a perspective structural view of the upper sliding table mechanism of the present invention.

[0021] Figure 6 is a perspective structural view of the upper sliding table mechanism from another angle of the present invention.

[0022] Figure 7 is a front view of the upper sliding table mechanism of the present invention.

[0023] Figure 8 is a side view of the upper sliding table mechanism of the present invention.

[0024] Figure 9 is a perspective structural view of the lower detection mechanism of the present invention.

[0025] Figure 10 is a perspective structural view of the lower detection mechanism from another angle of the present invention.

[0026] Figure 11 is a front view of the lower detection mechanism of the present invention.

[0027] Figure 12 is a side view of the lower sliding table mechanism of the present invention.

[0028] Figure 13 is Figure 11 a partial enlarged view of part A in

[0029] Figure 14 is a schematic view of the positioning mechanism of the present invention.

[0030] Figure 15 is a structural view of the combined component of tapered bearings and gears of the present invention.

[0031] Figure 16 is a structural view of the upper tapered bearing of the present invention.

[0032] Each reference numeral in the figure represents: 1. Frame; 11. Working platform; 2. Upper sliding table mechanism; 21. Upper driving part; 211. First output end; 22. Upper sliding shaft; 221. Shaft retaining cover; 222. Sliding shaft body; 23. Upper mounting part; 24. Upper rotating part; 241. Upper rotating sleeve; 242. Upper flange; 243. Upper tapered sleeve; 27. Upper fixing frame; 271. Horizontal platform; 272. Vertical support plate; 3. Tapered bearing and gear combination assembly; 31. Gear shaft; 32. Casing; 33. Lower tapered bearing; 34. Upper tapered bearing; 35. Flange plate; 36. Locking nut; 4. Positioning mechanism; 6. Lower detection mechanism; 61. Lower rotating part; 611. Lower cone; 612. Countersunk cylinder; 613. Lower sleeve; 614. Spring; 615. Pressure ring; 62. Lower sliding shaft; 63. Lower mounting part; 631. Lower support column; 632. Fixed flat plate; 633. Lower fixing sleeve; 64. Lifting frame; 65. Displacement sensor; 66. Anti-rotation column; 67. Sensor mounting frame; 68. Lifter; 69. Lower driving part; 691. Second output end; 5. Upper tooling mechanism; 51. Upper side plate; 52. Upper center point; 7. Lower tooling mechanism; 71. Lower side plate; 72. Lower center point; 9. Cylinder. Detailed implementation mode

[0033] The present invention will be further described in detail below. Unless otherwise specified, the instruments or materials used in the present invention are commercially available.

[0034] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0035] In the present application, unless otherwise clearly specified and limited, the terms "assembly", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0036] As Figures 1 to 16As shown in the figure, the clearance detection device for the combination of tapered bearing and gear in this embodiment includes a frame 1, an upper sliding table mechanism 2, a positioning mechanism 4, and a lower detection mechanism 6. The positioning mechanism 4 is placed on the working platform 11 of the frame 1. The upper sliding table mechanism 2 and the lower detection mechanism 6 are respectively located above and below the working platform 11 of the frame 1. The upper sliding table mechanism 2 includes an upper driving member 21, an upper sliding shaft 22, an upper rotating member 24, and an upper fixing frame 27. The upper fixing frame 27 is connected to the frame 1. The first output end 211 of the upper driving member 21 is located above the upper sliding shaft 22 and is used to drive the upper sliding shaft 22 to move up and down. The upper sliding shaft 22 is connected to the upper fixing frame 27 through a cylindrical roller bearing. The upper rotating member 24 is connected to the lower end of the upper sliding shaft 22 and is rotatable relative to the upper sliding shaft 22. The tapered bearing and gear combination assembly 3 includes a gear shaft 31, a housing 32, a lower tapered bearing 33, an upper tapered bearing 34, a flange 35, and a locking nut 36. The gear shaft 31 is located inside the housing 32. The upper outer wall of the upper part of the gear shaft 31 is connected to the inner wall of the housing 32 through the upper tapered bearing 34. The lower outer wall of the lower part of the gear shaft 31 is connected to the inner wall of the housing 32 through the lower tapered bearing 33. The gear of the gear shaft 31 is located at the lower end. A flange 35 is sleeved on the outer peripheral wall of the upper end of the gear shaft. The flange 35 has a tapered shape with an upward opening, and the flange 35 is fixed on the gear shaft by a locking nut 36 sleeved on the outer peripheral wall of the upper end of the gear shaft (such as Figure 15 and Figure 16As shown in the figure). The upper rotating part 24 is pressed on the upper part of the gear shaft 31 in the tapered bearing and gear combination assembly 3; when the upper slide mechanism 2 moves downward, the tapered bearing and gear combination assembly 3 is already fixed on the lower detection mechanism 6, the casing 32 in the tapered bearing and gear combination assembly 3 is in a static state, the casing 32 is positioned by the positioning mechanism 4, and the lower detection mechanism 6 plays a fixing role. The lower detection mechanism 6 includes a lower driving part 69, a lifter 68, a displacement sensor 65, a lifting frame 64, a lower mounting part 63, a lower sliding shaft 62, and a lower rotating part 61. The second output end 691 of the lower driving part 69 is used to drive the lifter 68. The lower rotating part 61 is mounted on the lower mounting part 63. The upper and lower parts of the lifting frame 64 are respectively connected to the lower sliding shaft 62 and the lifter 68. The displacement sensor 65 is located inside the lifting frame 64 and connected to the lower mounting part 63. The lower rotating part 61 is connected to the upper part of the lower sliding shaft 62 and is rotatable relative to the lower sliding shaft 62. The lower part of the gear shaft 31 in the tapered bearing and gear combination assembly 3 is pressed on the lower rotating part 61. The lifter 68 is fixed on the frame 1, and the output shaft of the lifter 68 drives the lifting frame 64 to move up and down. After the upper slide mechanism 2 applies an axial force, the lower detection mechanism 6 applies an upward axial force. The axial force acts on the gear of the gear shaft 31 in the tapered bearing and gear combination assembly 3. The casing 32 is stationary, and the tapered bearing and gear combination assembly 3 moves upward, and the moving value is the measured positive backlash. In the present invention, axial forces are respectively loaded by the upper driving part 21 and the lower driving part 69, and a load is automatically applied to the tapered bearing and gear combination assembly 3. The backlash is directly measured by the displacement sensor 65, and data is collected to realize the automatic measurement of the bearing backlash value. This measurement method has high measurement accuracy (up to 0.002 mm), high repeatability accuracy, and high efficiency. The present invention measures the backlash of the tapered bearing and gear combination assembly by applying a certain axial force up and down, and meets the measurement of the positive axial backlash in the combined state of the tapered bearing, gear shaft, locking nut, and external casing.

[0037] The positioning mechanism 4 is used to position and clamp the casing 32 in the tapered bearing and gear combination assembly 3 of the intermediate and rear reducer, facilitating the automatic docking and measurement of each detection device with the reducer. The upper driving part 21 and the lower driving part 69 are responsible for axially loading the shafting to meet the product process requirements.

[0038] The upper slide mechanism 2 is liftable relative to the frame 1, reserving a stroke for installing the parts to be measured, and can meet the detection of the backlash of the tapered bearing and gear combination with different axial heights of the input gear assembly or output gear assembly of different models of products, enabling the equipment to have the function of flexible model change.

[0039] In this embodiment, the frame 1 is provided with a slide rail in the vertical direction. A slider is provided on the upper fixed frame 27, and the slider is slidably connected to the slide rail. The upper fixed frame 27 is driven by a driving member (not shown in the figure) to move up and down along the slide rail. In this way, the overall lifting of the upper slide table mechanism 2 is realized. To make the movement of the upper slide table mechanism 2 more stable during lifting, a guide rod is provided below the top of the frame 1, and a guide hole for the guide rod to pass through is opened on the upper fixed frame 27, so as to realize the guiding function.

[0040] As Figure 5 shown, the upper fixed frame 27 includes three horizontally arranged horizontal platforms 271 and vertical support plates 272 adjacent to each other between the horizontal platforms 271. The upper driving member 21 is connected to the topmost horizontal platform 271, and the first output end 211 of the upper driving member 21 passes through the topmost horizontal platform 271. The upper and lower parts of the upper sliding shaft 22 are respectively connected to the other two horizontal platforms 271 through oil-free bearings.

[0041] As Figure 5 shown, in this embodiment, the first output end 211 of the upper driving member 21 is connected with a servo cylinder joint, and the servo cylinder joint and the upper sliding shaft 22 are arranged at intervals.

[0042] As Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 shown, in this embodiment, the device further includes an upper mounting member 23. The upper mounting member 23 is connected to the bottom of the upper sliding shaft 22. The upper rotating member 24 includes an upper rotating sleeve 241, an upper flange 242 and an upper tapered sleeve 243 arranged in sequence from top to bottom. The upper rotating sleeve 241 is rotatably connected to the upper mounting member 23, and the upper tapered sleeve 243 is pressed on the upper part of the gear shaft 31 in the tapered bearing and gear combination assembly 3 for accurate centering. The upper flange 242 is responsible for pressing the flange 35 in the tapered bearing and gear combination assembly 3 from the upper side ( Figure 4 the flange 35 is shown in the figure), transmitting the applied axial load, and making the tapered bearing balls tightly fit against the inner tapered surface of the bearing outer ring, so as to eliminate the clearance of the bearing itself.

[0043] As Figure 7 shown, the outer circumferential direction of the upper mounting member 23 is provided with a cylindrical pin. The upper and lower ends of the cylindrical pin are respectively located in the bottommost horizontal platform 271 and the upper mounting member 23. When the upper rotating member 24 rotates, the cylindrical pin prevents the upper mounting member 23 from rotating.

[0044] As Figure 7 shown, in this embodiment, the upper sliding shaft 22 includes a sliding shaft main body 222 and a shaft retaining cover 221 located at the upper part of the sliding shaft main body 222. The upper mounting member 23 is connected to the lower part of the sliding shaft main body 222. The shaft retaining cover 221 can slide on the upper fixed frame 27, transmit the axial force, and drive the sliding shaft main body 222 to move.

[0045] The upper mounting member 23 is connected to the sliding shaft body 222.

[0046] As Figure 9 shown, the lower mounting member 63 includes a lower support column 631, a fixed flat plate 632, and a lower fixing sleeve 633. The lower support column 631 and the lower fixing sleeve 633 are respectively installed on the upper and lower sides of the fixed flat plate 632. The fixed flat plate 632 is provided with a through hole at the inner circle of the lower fixing sleeve 633. The lower sliding shaft 62 is connected to the lower fixing sleeve 633 through a cylindrical roller bearing. An anti-rotation column 66 for preventing the lifting frame 64 from rotating is provided between the lifting frame 64 and the lower fixing sleeve 633. The way the tapered bearing and gear combination assembly 3 enters the detection device is by tray-type pushing, and it sinks after reaching the position. After the measurement is completed, the air cylinders 9 on both sides of the positioning mechanism 4 push up, moving the tray to a horizontal state, which is convenient for manual removal of the tray and parts. The pushing and removal of the tray can be realized by conventional technical means and will not be elaborated here.

[0047] The middle part of the lower mounting member 63 is a moving part, and the lower fixing sleeve 633 is a supporting part. During operation, the lower fixing sleeve 633 and the end face of the casing 323 are stationary, and central components such as the lifting frame 64 and the pressure ring 615 move upward with the motor. The lower side plate 71 is responsible for pressing the tapered bearing and gear combination assembly 3 from the lower side, making the balls of the inner ring of the bearing fit tightly with the inner tapered surface of the outer ring of the bearing. The lower side plate 71 directly supports the lower end of the gear.

[0048] As Figures 9 to 12 shown, the lower detection mechanism 6 further includes a sensor mounting bracket 67, and the displacement sensor 65 is mounted on the sensor mounting bracket 67. The sensor mounting bracket 67 is connected to the lower part of the lower fixing sleeve 633.

[0049] As Figure 13 shown, the lower rotating member 61 includes a lower cone 611, a countersunk cylinder 612, a lower sleeve 613, a spring 614, and a pressure ring 615. The lower cone 611 is located inside the countersunk cylinder 612. The pressure ring 615 is sleeved on the outer circumference of the lower cone 611 and is connected to the top of the countersunk cylinder 612. The spring 614 is located in the blind hole at the lower part of the lower cone 611. The countersunk cylinder 612 is connected to the lower sleeve 613 through a cylindrical roller bearing. The lower sleeve 613 is connected to the upper part of the lower sliding shaft 62. The lower rotating member 61 is used to rotate the flange 35.

[0050] The lower detection mechanism 6 further includes a coupling (not shown in the figure), and the lower driving member 69 drives the lifter 68 through the coupling.

[0051] The device further includes a motor mounting bracket (not shown in the figure). The motor mounting bracket is mounted on the housing of the lifter 68, and the lower driving member 69 is connected to the lifter 68 through the motor mounting bracket.

[0052] As Figure 4As shown in the figure, the device further includes an upper tooling mechanism 5 and a lower tooling mechanism 7. The upper tooling mechanism 5 and the lower tooling mechanism 7 are respectively provided with an upper center point 52 and a lower center point 72, and the upper center point 52 and the lower center point 72 are respectively installed on the upper rotating part 24 and the lower rotating part 61. The upper tooling mechanism 5 and the lower tooling mechanism 7 are also respectively provided with an upper side plate 51 and a lower side plate 71. When the upper flange 242 or the fixed flat plate 632 cannot press the tapered bearing and gear combination assembly 3, the upper side plate 51 is placed between the tapered bearing and gear combination assembly 3 and the upper flange 242, and the lower side plate 71 is placed between the fixed flat plate 632 and the tapered bearing and gear combination assembly 3, which is convenient for pressing the tapered bearing and gear combination assembly 3.

[0053] The usage method of the device of the present invention includes the following steps: 1) Manually push the product into the reducer positioning mechanism 4 for positioning and clamping; 2) The upper sliding table mechanism 2 descends to the in-place position; 3) The upper driving part 21 applies a first preset loading force to eliminate the clearance of the upper tapered bearing 34; 4) The lower driving part 69 applies a second preset loading force to make the displacement sensor 65 fit the measurement end face and read the data L1 taken by the displacement sensor 65; 5) The lower driving part 69 applies a third preset loading force to make the inner rings of the two tapered bearings (the lower tapered bearing 33 and the upper tapered bearing 34) and the gear shaft 31 move vertically upward along the axial force as required by the design; 6) Read the data L2 taken by the displacement sensor 65; 7) After the measurement is completed, the lower driving part 69 resets, and the upper driving part 21 resets; 8) Rotate the flange 35 by 120°, and repeat the measurement steps 2)-7). In this embodiment, the measurement is carried out three times in total; 9) After the measurement is completed, the upper sliding table mechanism 2 resets.

[0054] In this embodiment, the first preset loading force and the third preset loading force are 200 kg, and the second preset loading force is 100 kg. In other embodiments, it is adjusted according to actual needs.

[0055] Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention by using the above-disclosed technical content, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the technical solution of the present invention shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. A tapered bearing and gear combination clearance detection device, comprising a frame (1), an upper slide mechanism (2), a positioning mechanism (4), and a lower detection mechanism (6), wherein the positioning mechanism (4) is placed on a working platform (11) of the frame (1), the upper slide mechanism (2) and the lower detection mechanism (6) are respectively located above and below the working platform (11) of the frame (1), and the tapered bearing and gear combination assembly (3) is positioned by the positioning mechanism (4), characterized in that: The upper slide mechanism (2) comprises an upper driving member (21), an upper sliding shaft (22), an upper rotating member (24), and an upper fixed frame (27); the upper fixed frame (27) is connected to the frame (1); a first output end (211) of the upper driving member (21) is located above the upper sliding shaft (22) and is used to drive the upper sliding shaft (22) to move up and down; the upper sliding shaft (22) is connected to the upper fixed frame (27) via a cylindrical roller bearing; the upper rotating member (24) is connected to the lower end of the upper sliding shaft (22) and is rotatable relative to the upper sliding shaft (22); and the upper rotating member (24) is pressed onto the upper portion of the tapered bearing and gear assembly (3); The lower detection mechanism (6) comprises a lower driving member (69), a lifter (68), a displacement sensor (65), a lifting frame (64), a lower mounting member (63), a lower sliding shaft (62), and a lower rotating member (61); the second output end (691) of the lower driving member (69) is used to drive the lifter (68); the lower rotating member (61) is mounted on the lower mounting member (63); the upper and lower parts of the lifting frame (64) are respectively connected to the lower sliding shaft (62) and the lifter (68); the displacement sensor (65) is located in the lifting frame (64) and is connected to the lower mounting member (63); the lower rotating member (61) is connected to the upper part of the lower sliding shaft (62) and is rotatable relative to the lower sliding shaft (62); and the lower part of the conical bearing and gear combination component (3) is pressed onto the lower rotating member (61).

2. The tapered bearing and gear combination clearance detection device according to claim 1, characterized in that: The upper fixed frame (27) comprises three parallel horizontal platforms (271) and a vertical support plate (272) located between adjacent horizontal platforms (271); the upper driving member (21) is connected to the uppermost horizontal platform (271) and the first output end (211) of the upper driving member (21) passes through the uppermost horizontal platform (271); the upper and lower parts of the upper sliding shaft (22) are respectively connected to the bearings of the other two horizontal platforms (271).

3. The combined clearance detection device of tapered bearing and gear according to claim 2 is characterized in that: The device further comprises an upper mounting member (23), wherein the upper mounting member (23) is connected to the bottom of the upper sliding shaft (22); the upper rotating member (24) comprises an upper rotating sleeve (241), an upper flange (242) and an upper conical sleeve (243) which are arranged in sequence from top to bottom; the upper rotating sleeve (241) is rotatably connected to the upper mounting member (23); and the upper conical sleeve (243) is pressed onto the upper portion of the conical bearing and gear combination assembly (3).

4. The tapered bearing and gear combination clearance detection device according to claim 3, characterized in that: The upper sliding shaft (22) comprises a sliding shaft body (222) and a shaft stop cover (221) located at the upper portion of the sliding shaft body (222), and the upper mounting member (23) is connected to the lower portion of the sliding shaft body (222).

5. The tapered bearing and gear combination clearance detection device according to claim 1, characterized in that: The lower mounting member (63) comprises a lower supporting column (631), a fixed plate (632) and a lower fixed sleeve (633); the lower supporting column (631) and the lower fixed sleeve (633) are respectively mounted on the upper and lower sides of the fixed plate (632); the fixed plate (632) is provided with a through hole at the inner circle of the lower fixed sleeve (633); the lower sliding shaft (62) is connected to the lower fixed sleeve (633) via a cylindrical roller bearing; and an anti-rotation column (66) for preventing the lifting frame (64) from rotating is provided between the lifting frame (64) and the lower fixed sleeve (633).

6. The tapered bearing and gear combination clearance detection device according to claim 5, characterized in that: The lower detection mechanism (6) further comprises a sensor mounting frame (67), the displacement sensor (65) being mounted on the sensor mounting frame (67), and the sensor mounting frame (67) being connected to the lower portion of the lower fixing sleeve (633).

7. The combined clearance detection device of tapered bearing and gear according to claim 6, characterized in that: The lower rotating member (61) comprises a lower cone (611), a countersunk cylinder (612), a lower sleeve (613), a spring (614), and a pressure ring (615); the lower cone (611) is located inside the countersunk cylinder (612); the pressure ring (615) is sleeved on the outer circumference of the lower cone (611) and connected to the top of the countersunk cylinder (612); the spring (614) is located in a blind hole at the bottom of the lower cone (611); the countersunk cylinder (612) is connected to the lower sleeve (613) via a cylindrical roller bearing; and the lower sleeve (613) is connected to the upper part of the lower sliding shaft (62).

8. The tapered bearing and gear combination clearance detection device according to claim 1, characterized in that: The lower detection mechanism (6) further comprises a coupling, and the lower driving member (69) drives the lifter (68) via the coupling.

9. The tapered bearing and gear combination clearance detection device according to claim 1, characterized in that: The device further comprises an upper tooling mechanism (5) and a lower tooling mechanism (7), wherein the upper tooling mechanism (5) and the lower tooling mechanism (7) are respectively provided with an upper center point (52) and a lower center point (72), and the upper center point (52) and the lower center point (72) are respectively mounted on an upper rotating member (24) and a lower rotating member (61).

10. A detection method for a tapered bearing and gear combination clearance detection device, characterized in that: The following steps are involved: S1) placing the tapered bearing and gear assembly (3) in a positioning mechanism (4) for positioning and clamping; S2) the upper slide mechanism (2) descends into position; S3) the upper driving member (21) applies a first preset loading force to eliminate the play of the upper cone bearing (34); S4) the lower driving member (69) applies a second preset loading force to make the displacement sensor (65) fit the measuring end surface, and read the number L1 of the displacement sensor (65); S5) the lower driving member (69) applies a third preset loading force, so that the inner rings of the lower cone bearing (33) and the upper cone bearing (34) move together with the gear shaft (31) in a vertically upward axial force; S6) reading the displacement sensor (65) number L2; S7) After the measurement is completed, the lower driving member (69) is reset, and the upper driving member (21) is reset; S8) rotating the lower rotating member (61) by 120°, and repeating the measuring steps S2) to S7); S9) After the measurement is completed, the upper slide mechanism (2) is reset.

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