Device for improving installation clearance adjusting efficiency of double-row tapered roller bearing

Abstract

The utility model relates to the technical field of double-row tapered roller bearings, in particular to a device for improving the installation clearance adjustment efficiency of a double-row tapered roller bearing, which comprises a bearing body and a detection assembly, the bearing body comprises an inner ring, a tapered roller, an outer ring and a bearing seat which are sequentially arranged from inside to outside; the inner ring is sleeved and detachably connected to the shaft rod, the outer ring is divided into an upper section and a lower section, a space ring is arranged between the upper section and the lower section, the outer ring is sleeved with the bearing seat, the top end of the inner side face of the bearing seat is fixedly connected with an upper limiting ring, and the upper limiting ring is located over the outer ring and used for limiting the top end of the outer ring; the bottom end of the bearing seat is detachably connected with a lower limiting ring; the lower limiting ring is used for limiting the bottom end of the outer ring; the detection assembly comprises a hanging ring and a dial indicator, the hanging ring is detachably arranged at the top end of the bearing seat, and the dial indicator is detachably arranged at the top end of the bearing body and used for detecting installation clearance. The device has the effects that the mounting clearance is convenient to adjust, and the efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of double-row tapered roller bearings, and in particular to a device for improving the installation clearance adjustment efficiency of double-row tapered roller bearings. Background Art

[0002] Double-row tapered roller bearings are widely used in wind power gearboxes because they can carry combined radial and axial loads, mainly radial. The requirements for their load-bearing capacity and service life are relatively high, and installation clearance is an important indicator that affects their load-bearing capacity and service life.

[0003] In wind turbine gearboxes, when tapered roller bearings are selected, double-row tapered roller bearings with spacers are usually used, and the required axial clearance, i.e., installation clearance, is achieved by selecting or grinding the thickness of the spacers. An intermediate-stage assembly is installed in the wind turbine gearbox, and the bearing is installed on the intermediate-stage assembly and limited by the limiter on the gearbox, so that the bearing is limited as a whole and will not fall apart. In the existing wind turbine gearbox assembly, when the installation clearance is adjusted to make the bearing clearance meet the requirements, the intermediate-stage assembly and the entire bearing are usually assembled into the box body, and the "pulling method" is used to measure the bearing installation clearance. The measured value is compared with the installation clearance value required by the technical requirements, and then the bearing spacer is ground.

[0004] However, the entire process of adjusting the installation clearance usually involves opening and closing the gearbox and opening and closing the grinding spacer multiple times. When the bearing needs to be replaced on the wind tower, the bearing installation clearance cannot be adjusted without a matching box, and the gearbox assembly is cumbersome; and when opening and closing the grinding spacer, the bearing needs to be disassembled and assembled multiple times, and the bearings in the related technology are not easy to disassemble and assemble; it is time-consuming and labor-intensive, greatly affecting efficiency, and causing delayed losses in wind farm services. Utility Model Content

[0005] In order to facilitate the adjustment of installation clearance and improve efficiency, the present application provides a device for improving the efficiency of adjusting the installation clearance of a double-row tapered roller bearing.

[0006] The present application provides a device for improving the installation clearance adjustment efficiency of a double-row tapered roller bearing, which adopts the following technical solution:

[0007] A device for improving the installation clearance adjustment efficiency of a double-row tapered roller bearing comprises a device body, the device body comprises a bearing body and a detection component, the bearing body is mounted on an intermediate level component used in conjunction with the device body;

[0008] The top end of the intermediate stage component is a shaft rod, and the bottom end of the intermediate stage component is docked and installed with the gear box;

[0009] The bearing body comprises an inner ring, a tapered roller, an outer ring and a bearing seat which are arranged in sequence from the inside to the outside; the inner ring is sleeved and detachably connected to the shaft, the tapered roller is limited and rotatably installed between the inner ring and the outer ring, the outer ring is divided into an upper section and a lower section, a spacer ring is arranged between the upper section and the lower section, the bearing seat is sleeved on the outer ring, an upper limit ring is fixedly connected to the top of the inner side surface of the bearing seat, the upper limit ring is located directly above the outer ring and is used to limit the top of the outer ring; the bottom end of the bearing seat is detachably connected to a lower limit ring, the lower limit ring is used to limit the bottom end of the outer ring;

[0010] The detection assembly comprises a lifting ring and a dial indicator. The lifting ring is detachably arranged on the top of the bearing seat, and the dial indicator is detachably arranged on the top of the bearing body for detecting the installation clearance.

[0011] By adopting the above technical solution, before assembling the device of the present application, use an outside micrometer to measure and record the thickness of the spacer, and use clean wiping paper to wipe the parts of the bearing body, the intermediate stage assembly and the detection assembly clean. Place the shaft of the intermediate stage assembly horizontally on the ground platform with the shaft facing upward, install the inner ring on the shaft, and then install the tapered roller, and then install the spacer and the tapered bearing outer ring. Use a lifting ring to lift the bearing seat and put it on the outer ring. Install the two pressure plates under the bearing seat and fix them with connecting bolts. Connect the external crane sling to the lifting ring and lift it slowly. When the intermediate stage assembly is slightly off the ground, compare the data after the dial indicator test with the installation clearance value required by the technology, and grind or replace the spacer until the installation clearance of the bearing body meets the requirements, and fill in the data of the entire process.

[0012] The bearing body structure of the present application is simple and compact. When the spacer ring needs to be ground or replaced, the lower limit ring and the bearing seat are removed in sequence to expose the spacer ring, and the spacer ring is ground or replaced according to the specified requirements, so that the bearing body can be opened and closed to adjust the installation clearance. When the bearing body is installed, the inner ring, tapered roller, outer ring, spacer ring and bearing seat are installed from the inside to the outside. The whole disassembly and assembly process is simple and convenient to operate, which helps to improve the adjustment efficiency of the installation clearance. In addition, the device of the present application does not need the limit part on the gear box to limit the bearing body. When the bearing body is installed on the intermediate stage component, it can form a whole and will not fall apart. Before the intermediate stage component is installed in the gear box, the installation clearance of the bearing body can be adjusted to the appropriate range, and then installed in the gear box, which saves the manpower and material cost of opening and closing the gear box during the installation clearance debugging stage, speeds up the entire gear box assembly test cycle, and improves the replacement efficiency of the bearing body on the tower.

[0013] Optionally, the lower limit ring is divided into two symmetrically arranged pressure plates, and the pressure plates are fixed to the bottom end of the bearing seat by connecting bolts.

[0014] By adopting the above technical solution, the lower limit ring is divided into two independent pressure plates, which is convenient for the pressure plate to be inserted from the radial direction of the bearing seat for disassembly and assembly, and is easy to operate.

[0015] Optionally, the upper limit ring and the top bracket of the outer ring are provided with a spacing gap, a gasket is provided in the spacing gap, and the gasket passes through the upper limit ring through a tightening bolt and abuts against the top of the outer ring.

[0016] By adopting the above technical solution, it is easy to adjust the tightness of the limit between the bearing seat and the outer ring.

[0017] Optionally, the two rows of tapered rollers are tilted and arranged in opposite directions, a limiting groove is provided on the surface of the inner ring close to the outer ring, and the side of the tapered roller close to the inner ring is clamped in the limiting groove; the side of the outer ring close to the inner ring is provided with a limiting inclined surface adapted to the tapered roller.

[0018] By adopting the above technical solution, when the bearing seat is disassembled, the outer ring can be directly removed from the tapered roller, thereby achieving mutual limitation of the inner ring, outer ring and tapered roller, and further improving the convenience of disassembly and assembly.

[0019] Optionally, a bearing pressure ring is fixedly connected to the top end of the inner side of the inner ring, and the bearing pressure ring is detachably connected to the top end of the shaft rod by fixing bolts.

[0020] By adopting the above technical solution, it is easy to achieve the connection between the bearing body and the shaft rod.

[0021] Optionally, there are two dial indicators, each of which includes a base portion and a contact end, the two base portions are mounted on the bearing pressure ring and distributed along the radial direction of the bearing pressure ring, and the contact end contacts the horizontal end surface on the top end of the bearing seat.

[0022] By adopting the above technical solution, the installation and measurement of the dial indicator can be realized.

[0023] Optionally, a gap is provided between the inner wall of the bearing seat and the outer wall of the outer ring, and the size of the gap is 0.05mm-0.095mm.

[0024] By adopting the above technical solution and designing the gap size, the installation between the bearing seat and the outer ring is facilitated.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The present invention has a simple structure, and utilizes a bearing seat with an upper limit ring, a two-half pressure plate and a gasket to press the outer ring and the spacer ring, and has a compact structure;

[0027] 2. The present application adopts a two-half pressure plate, which can be assembled after the intermediate assembly has assembled the rest of the bearing body. The pressure plate is easy to disassemble and assemble, and the entire bearing body is also easy to disassemble and assemble;

[0028] 3. In this application, a gap is provided between the bearing seat and the outer ring of the bearing, and the fit is a clearance fit, and the clearance value is 0.05mm-0.095mm, which is convenient for the installation between the bearing seat and the outer ring;

[0029] 4. This application uses an external crane to lift the outer ring, and then uses two dial indicators to measure the data, so as to quickly obtain the grinding data of the spacer ring;

[0030] 5. The present application can advance the grinding of the spacer ring, that is, the installation clearance can be adjusted to an appropriate range before the intermediate-stage assembly is installed in the gearbox, thereby saving the manpower and material costs of opening and closing the gearbox during the installation clearance stage, speeding up the entire gearbox assembly test cycle, and improving the efficiency of replacing the sleeve on the tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of a device for improving the installation clearance adjustment efficiency of a double-row tapered roller bearing according to an embodiment of the present application.

[0032] Figure 2 It is a structural schematic diagram used to display the bearing body in the embodiment of the present application.

[0033] Figure 3 It is a structural schematic diagram used to display the limiting inclined surface in the embodiment of the present application.

[0034] Explanation of the reference numerals in the accompanying drawings: 1. Intermediate-stage assembly; 11. Shaft; 2. Bearing body; 21. Inner ring; 211. Limit groove; 22. Tapered roller; 23. Outer ring; 231. Limit slope; 24. Bearing seat; 25. Spacer; 3. Upper limit ring; 4. Lower limit ring; 41. Pressure plate; 42. Connecting bolt; 5. Lifting ring; 6. Dial indicator; 7. Washer; 71. Holding bolt; 8. Bearing pressure ring; 81. Fixing bolt. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-3 This application is described in further detail.

[0036] The embodiment of the present application discloses a device for improving the installation clearance adjustment efficiency of a double-row tapered roller bearing. Figure 1-2The device for improving the installation clearance adjustment efficiency of a double-row tapered roller bearing comprises a device body, and the device body comprises a bearing body 2 and a detection component. The bearing body 2 is mounted on an intermediate-stage component (1) used in conjunction with the device body, the top end of the intermediate-stage component 1 is a shaft 11, and the bottom end of the intermediate-stage component 1 is docked with a gearbox. The role of the intermediate-stage component 1 in this application is to achieve detachable docking between the bearing body 2 and the gearbox, and the specific structure is not described in detail in this application.

[0037] The bearing body 2 includes an inner ring 21, a tapered roller 22, an outer ring 23 and a bearing seat 24 which are arranged in sequence from the inside to the outside; the inner ring 21 is sleeved and detachably connected to the shaft 11, the tapered roller 22 is limited and rotatably installed between the inner ring 21 and the outer ring 23, the outer ring 23 is divided into an upper section and a lower section, and a spacer 25 is arranged between the upper section and the lower section, the bearing seat 24 is sleeved on the outer ring 23, the top of the inner side surface of the bearing seat 24 is fixedly connected with an upper limit ring 3, the upper limit ring 3 is located directly above the outer ring 23 and is used to limit the top of the outer ring 23; the bottom end of the bearing seat 24 is detachably connected with a lower limit ring 4, and the lower limit ring 4 is used to limit the bottom end of the outer ring 23. The detection assembly includes two lifting rings 5 ​​and two dial indicators 6, the lifting ring 5 is detachably arranged on the top of the bearing seat 24 by bolts, and the dial indicator 6 is detachably arranged on the top of the bearing body 2 for detecting the installation clearance.

[0038] Before assembling the device of the present application, use an outside micrometer to measure the thickness of the spacer 25 and record it, and use clean wiping paper to clean the parts of the bearing body 2, the intermediate stage assembly 1 and the detection assembly. Place the shaft 11 of the intermediate stage assembly 1 upward and horizontally on the ground platform, install the inner ring on the shaft 11, and then install the tapered roller 22, and then install the spacer 25 and the tapered bearing outer ring 23. Use the lifting ring 5 to lift the bearing seat 24 and put it on the outer ring 23. Install the two pressure plates 41 under the bearing seat 24 and fix them with connecting bolts 42. Connect the external crane lifting belt to the lifting ring 5 and lift it slowly. When the intermediate stage assembly 1 is slightly off the ground, compare the data after detection by the dial indicator 6 with the installation clearance value required by the technology, and grind or replace the spacer 25 until the installation clearance of the bearing body 2 meets the requirements, and fill in the data of the entire process.

[0039] The bearing body 2 of the present application has a simple and compact structure. When the spacer 25 needs to be ground or replaced, the lower limit ring 4 and the bearing seat 24 are removed in sequence, so that the spacer 25 can be exposed, and ground or replaced according to the specified requirements, so that the bearing body 2 can be opened and closed to adjust the installation clearance. When the bearing body 2 is installed, the inner ring 21, the tapered roller 22, the outer ring 23, the spacer 25 and the bearing seat 24 are installed from the inside to the outside. The whole disassembly and assembly process is simple and convenient. In addition, the device of the present application does not need the limit part on the gear box to limit the bearing body 2. When the bearing body 2 is installed on the intermediate stage component 1, it can form a whole and will not fall apart. Before the intermediate stage component 1 is installed in the gear box, the installation clearance of the bearing body 2 can be adjusted to a suitable range, and then installed in the gear box, saving the manpower and material cost of opening and closing the gear box during the installation clearance debugging stage, accelerating the entire gear box assembly test cycle, and improving the replacement efficiency of the bearing body 2 on the tower.

[0040] Reference Figure 2-3 There is a gap between the inner wall of the bearing seat 24 and the outer wall of the outer ring 23, and the gap size is 0.05mm-0.095mm. According to the design of the gap size, the installation between the bearing seat 24 and the outer ring 23 is convenient. The lower limit ring 4 is divided into two symmetrically arranged pressure plates 41, and the pressure plate 41 is fixed to the bottom end of the bearing seat 24 by connecting bolts 42. The lower limit ring 4 is divided into two independent pressure plates 41, which is convenient for the pressure plate 41 to be inserted from the radial direction of the bearing seat 24 for disassembly and assembly, which is convenient for operation. The upper limit ring 3 and the top bracket of the outer ring 23 are provided with a spacing gap, and a gasket 7 is provided in the spacing gap. The gasket 7 passes through the upper limit ring 3 through the clamping bolt 71 and abuts against the top of the outer ring 23. The clamping bolt 71 is arranged in a ring array with six, which is convenient for adjusting the tightness of the limit between the bearing seat 24 and the outer ring 23.

[0041] Reference Figure 2-3 The two rows of tapered rollers 22 are arranged in an inclined manner and in opposite directions. A limiting groove 211 is provided on the surface of the inner ring 21 close to the outer ring 23, and the side of the tapered roller 22 close to the inner ring 21 is clamped in the limiting groove 211; the side of the outer ring 23 close to the inner ring 21 is provided with a limiting inclined surface 231 adapted to the tapered roller 22. When the bearing seat 24 is disassembled, the outer ring 23 can be directly removed from the tapered roller 22, so that the inner ring 21, the outer ring 23 and the tapered roller 22 are mutually limited, and the convenience of disassembly and assembly is further improved. The top of the inner side of the inner ring 21 is fixedly connected with a bearing pressure ring 8, and the bearing pressure ring 8 is detachably connected to the top of the shaft 11 through a fixing bolt 81, so as to facilitate the connection between the bearing body 2 and the shaft 11.

[0042] Reference Figure 2-3The dial indicator 6 includes a base portion and a contact end. The base portion is installed on the bearing pressure ring 8 and has two contact ends distributed along the radial direction of the bearing pressure ring 8. The contact end contacts the horizontal end surface at the top of the bearing seat 24 to realize the installation and measurement of the dial indicator 6.

[0043] The implementation principle of a device for improving the installation clearance adjustment efficiency of a double-row tapered roller bearing in an embodiment of the present application is as follows:

[0044] 1) Before assembling the device of the present application, use an outside micrometer to measure and record the thickness of the spacer 25, and use clean wiping paper to wipe clean the parts of the bearing body 2, the intermediate stage assembly 1 and the detection assembly.

[0045] 2) Place the shaft 11 of the intermediate stage assembly 1 horizontally on the ground platform with the shaft facing upward, install the inner ring on the shaft 11, and then install the tapered roller 22, and then install the spacer 25 and the tapered bearing outer ring 23. Place the washer 7 on the outer ring 23 to press the end face of the top of the outer ring 23. Use the lifting ring 5 to lift the bearing seat 24 and put it on the outer ring 23. Install the two pressure plates 41 under the bearing seat 24 and fix them with connecting bolts 42.

[0046] 3) Use the lifting ring 5 to rotate the bearing seat 24 for more than five turns. After the bearing body 2 is rotated without abnormality, use the clamping bolt 71 to clamp the gasket 7. Tighten the clamping bolt 71 diagonally and in three steps.

[0047] 4) Fix the bases of the two dial gauges 6 on the bearing pressure ring 8 diagonally, and make the contact ends of the two dial gauges 6 contact the horizontal end surface of the top of the bearing seat 24, connect the external crane sling to the lifting ring 5, and slowly lift. When the intermediate stage assembly 1 is slightly off the ground, wait until the runout of the two dial gauges 6 is consistent, that is, the error of the two gauges does not exceed 5, and the runout is stable, record the runout of the two dial gauges 6, otherwise it should be re-tested;

[0048] 5) Rotate the bearing seat 24 for more than five turns, wait until the runout of the two dial indicators 6 is consistent, that is, the error of the two indicators does not exceed 5, and record the runout of the two dial indicators 6 when the runout is stable; tighten the clamping bolt 71 again, rotate the bearing seat 24 for more than five turns, wait until the runout of the two dial indicators 6 is consistent, that is, the error of the two indicators does not exceed 5, and record the runout of the two dial indicators 6 when the runout is stable and take the average.

[0049] 6) Compare the data after detection by dial indicator 6 with the installation clearance value required by the technical requirements, repeat the above steps twice, grind or replace the spacer 25 until the installation clearance of the bearing body 2 meets the requirements, and fill in the data of the entire process.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A device for improving the installation clearance adjustment efficiency of a double-row tapered roller bearing, characterized in that: The device comprises a device body, the device body comprising a bearing body (2) and a detection component, the bearing body (2) being mounted on an intermediate-level component (1) used in conjunction with the device body; The top end of the intermediate stage component (1) is a shaft (11), and the bottom end of the intermediate stage component (1) is butt-jointed with a gear box; The bearing body (2) comprises an inner ring (21), a tapered roller (22), an outer ring (23) and a bearing seat (24) which are arranged in sequence from the inside to the outside; the inner ring (21) is sleeved and detachably connected to the shaft (11); the tapered roller (22) is limited and rotatably installed between the inner ring (21) and the outer ring (23); the outer ring (23) is divided into an upper section and a lower section, and a spacer (25) is arranged between the upper section and the lower section; the bearing seat (24) is sleeved on the outer ring (23); the top end of the inner side surface of the bearing seat (24) is fixedly connected with an upper limit ring (3); the upper limit ring (3) is located directly above the outer ring (23) and is used to limit the top end of the outer ring (23); the bottom end of the bearing seat (24) is detachably connected with a lower limit ring (4); the lower limit ring (4) is used to limit the bottom end of the outer ring (23); The detection assembly comprises a lifting ring (5) and a dial indicator (6); the lifting ring (5) is detachably arranged on the top of the bearing seat (24); and the dial indicator (6) is detachably arranged on the top of the bearing body (2) for detecting installation clearance.

2. The device for improving the installation clearance adjustment efficiency of a double-row tapered roller bearing according to claim 1, characterized in that: The lower limit ring (4) is divided into two symmetrically arranged pressure plates (41), and the pressure plates (41) are fixed to the bottom end of the bearing seat (24) by connecting bolts (42).

3. A device for improving the installation clearance adjustment efficiency of a double-row tapered roller bearing according to claim 1 or 2, characterized in that: The upper limit ring (3) and the top bracket of the outer ring (23) are provided with a spacing gap, and a gasket (7) is provided in the spacing gap. The gasket (7) passes through the upper limit ring (3) through a clamping bolt (71) and abuts against the top of the outer ring (23).

4. A device for improving the installation clearance adjustment efficiency of a double-row tapered roller bearing according to claim 1 or 2, characterized in that: The two rows of tapered rollers (22) are arranged tilted and in opposite directions; a limiting groove (211) is provided on a surface of the inner ring (21) close to the outer ring (23); a side of the tapered roller (22) close to the inner ring (21) is clamped in the limiting groove (211); and a side of the outer ring (23) close to the inner ring (21) is provided with a limiting inclined surface (231) matched with the tapered roller (22).

5. The device for improving the installation clearance adjustment efficiency of a double-row tapered roller bearing according to claim 4, characterized in that: A bearing pressure ring (8) is fixedly connected to the top end of the inner side of the inner ring (21), and the bearing pressure ring (8) is detachably connected to the top end of the shaft rod (11) via a fixing bolt (81).

6. The device for improving the installation clearance adjustment efficiency of a double-row tapered roller bearing according to claim 5, characterized in that: There are two dial indicators (6), each of which comprises a base portion and a contact end. The two base portions are mounted on the bearing pressure ring (8) and are distributed along the radial direction of the bearing pressure ring (8), and the contact end contacts the horizontal end surface of the top end of the bearing seat (24).

7. A device for improving the installation clearance adjustment efficiency of a double-row tapered roller bearing according to claim 1 or 2, characterized in that: A gap is provided between the inner wall of the bearing seat (24) and the outer wall of the outer ring (23), and the size of the gap is 0.05 mm-0.095 mm.

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